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 [Search a list of Patent Appplications for class 177]   CLASS 177,WEIGHING SCALES
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SECTION I - CLASS DEFINITION

This class provides for (1) scales that determine the weight of articles or material, (2) the control of the supply of material to, with or without the discharge from, a weigh chamber responsive to accumulation of a predetermined weight of the material in the weigh chamber.

SECTION II - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

40Card, Picture, or Sign Exhibiting,   subclass 458 for a changeable exhibitor operated or controlled by a weigher.
73Measuring and Testing,   subclass 296 for a weighing type liquid level gauge, and 433+, for specific gravity or density determination with a weighing feature. See the notes to Class 73 for the distribution of measuring and testing art.
131Tobacco,   subclasses 280+ for automatic weighers controlling the feed of tobacco to cigar or cigarette machines.
137Fluid Handling,   subclasses 161 and 162 for a gravitating vessel controlling a fluid pressure system and subclasses 403+ for a fluid handling system controlled by the weight accumulated fluid.
141Fluent Material Handling, With Receiver or Receiver Coacting Means,   appropriate subclasses for a weigher-receiver organization with handling in addition to supplying or removing receivers, or treatment subsequent to completion of a weighing phase, particularly subclass 83 for mere determination of weight of contents of a receiver.
164Metal Founding,   subclass 155.7 for a metal casting apparatus including control means influenced by a weight sensor.
194Check-Actuated Control Mechanisms,   for check controlled weighing scale subclass 339 for the rejection of coins of improper weight.
198Conveyors: Power-Driven,   subclass 959 for a conveyor having a weighing feature wherein there is some moving of the material besides that necessary to the weighing operation.
209Classifying, Separating, and Assorting Solids,   subclasses 510+ , 592+, and 645+ for means for automatically sorting articles by weight, and subclass 239 for sifting with weighing.
212Traversing Hoists,   subclass 283 for a traversing hoist with a weighing means which accomplishes more than the mere lifting and weighing of the load.
222Dispensing,   subclass 55 for constant feed from a dispenser responsive to the weight of unrestrained material already discharged, subclass 58 for means responsive to the weight of material in a container for controlling its discharge, and subclass 77 for weighing-dispensing combinations involving means to weigh material already dispensed.
346Recorders,   subclass 94 for a recorder operated by a weigher wherein there is included only so much of the weigher as is necessary to operate the recorder.
366Agitating,   subclass 18 for mortar mixing devices including means for proportioning ingredients by weight, and subclass 141 for agitation with weighing.
374Thermal Measuring and Testing,   subclass 14 for thermal gravimetric analysis.
406Conveyors: Fluid Current,   subclasses 23+ and 32+ for a fluid current conveyor including a weighing feature wherein there is some movement of the material besides that necessary to the weighing operation.
414Material or Article Handling,   subclass 21 for weighing with handling of that class more than that necessary to the weighing operation.
700Data Processing: Generic Control Systems or Specific Applications,   subclass 305 for weight responsive computer control system.
702Data Processing: Measuring, Calibrating, or Testing,   subclasses 101+ for weight calibration or correction system, and subclasses 173+ for weight measurement system.
705Data Processing: Financial, Business Practice, Management, or Cost/Price Determination,   subclass 407 , for a postage meter system including (a) a weighing device to determine the weight of an article and (b) an electrical computing arrangement to calculate a postage fee based on the determined weight; and subclasses 414+, for determining the cost per unit weight of a material by an electrical computing arrangement.
D10Measuring, Testing, or Signalling Instruments,   subclasses 87+ for design of weighing machines.

SUBCLASSES

[List of Patents for class 177 subclass 1]    1PROCESSES:
 This subclass is indented under the class definition.  Processes.
  
[List of Patents for class 177 subclass 2]    2WITH RECORDER:
 This subclass is indented under the class definition.  Subject matter including means for making a permanent record of the weighing operation.

SEE OR SEARCH CLASS:

346Recorders,   subclasses 9+ and 40 for a recorder for a weigher.
  
[List of Patents for class 177 subclass 3]    3With computing or totalizing means:
 This subclass is indented under subclass 2.  Apparatus including means for totalizing the amount measured or for producing a record in units other than of mass or force.
  
[List of Patents for class 177 subclass 4]    4With recording of a factor additional to weight:
 This subclass is indented under subclass 2.  Apparatus wherein a record other than of the weight value is produced.
  
[List of Patents for class 177 subclass 5]    5Weight identification:
 This subclass is indented under subclass 4.  Apparatus wherein the additional record is of other information associated with the material weighed.
  
[List of Patents for class 177 subclass 6]    6Of both gross and tare on one record receiver:
 This subclass is indented under subclass 2.  Apparatus whereby records of tare and gross weight are associated.
  
[List of Patents for class 177 subclass 7]    7Responsive to means sensing removal of material:
 This subclass is indented under subclass 2.  Apparatus wherein the recorder is actuated by means sensing removal of the weighed mass or its weigh chamber.
  
[List of Patents for class 177 subclass 8]    8With record receiver advance:
 This subclass is indented under subclass 2.  Apparatus including means whereby the record receiver is advanced through the recorder.
  
[List of Patents for class 177 subclass 9]    9By weigher:
 This subclass is indented under subclass 8.  Apparatus wherein the means is the weigher.
  
[List of Patents for class 177 subclass 10]    10External marker operator:
 This subclass is indented under subclass 2.  Apparatus wherein the weight record is made by an independently operating operator.
  
[List of Patents for class 177 subclass 11]    11Recorder element mounted on poise:
 This subclass is indented under subclass 10.  Device wherein an element of the recorder is mounted on a slidable poise.
  
[List of Patents for class 177 subclass 12]    12Responsive to timer, or completion of weighing operation:
 This subclass is indented under subclass 2.  Apparatus wherein the recorder is actuated by timing means or means sensing the completion of the weighing operation.
  
[List of Patents for class 177 subclass 13]    13Weigher sets type:
 This subclass is indented under subclass 2.  Apparatus including weigher operated means setting record printing type.
  
[List of Patents for class 177 subclass 14]    14SELECTIVELY PRESET CYCLE FLOW TERMINATOR:
 This subclass is indented under the class definition.  Apparatus provided with means to limit the number of filling and discharging cycles of the weigher.
  
[List of Patents for class 177 subclass 15]    15WITH TOTAL REGISTER:
 This subclass is indented under the class definition.  Apparatus including a counting or totalizing device.

SEE OR SEARCH THIS CLASS, SUBCLASS:

3,for totalizing and recording.
  
[List of Patents for class 177 subclass 16]    16Integrator of steadily flowing fluent material:
 This subclass is indented under subclass 15.  Apparatus wherein the quantity of material flowed over a weigher is totalized by a means relating the continuous weigher reading to the material stream length.
  
[List of Patents for class 177 subclass 17]    17Of distinct successive loads:
 This subclass is indented under subclass 15.  Apparatus including means for adding together successive distinct weight value indications.
  
[List of Patents for class 177 subclass 18]    18Cycle totalizer:
 This subclass is indented under subclass 15.  Apparatus which is responsive to the number of times the weigher is operated.
  
[List of Patents for class 177 subclass 19]    19Single totalizer operated by plural weighers:
 This subclass is indented under subclass 18.  Apparatus wherein the totalizer is responsive to each of a plurality of weigh chambers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

17,for totalizing the weight value of successive loads.
  
[List of Patents for class 177 subclass 20]    20By preliminary translation of rotary weighers:
 This subclass is indented under subclass 19.  Apparatus wherein operation of the totalizer is preceded by preliminary translation of the weighing chambers in a rotary type weigher.
  
[List of Patents for class 177 subclass 21]    21By intermittently used one of plural weighers:
 This subclass is indented under subclass 19.  Apparatus wherein the totalizer is responsive to one of a plurality of weigh chambers said one being intermittently involved in a plurality of weighing operations.
  
[List of Patents for class 177 subclass 22]    22Weigh beam operated:
 This subclass is indented under subclass 18.  Apparatus operated by the oscillations of a weigh beam.
  
[List of Patents for class 177 subclass 23]    23Discharge valve operated:
 This subclass is indented under subclass 18.  Apparatus operated by movement of a weigh chamber discharge valve.
  
[List of Patents for class 177 subclass 24]    24Weigh chamber operated:
 This subclass is indented under subclass 18.  Apparatus operated by movement of a weigh chamber.
  
[List of Patents for class 177 subclass 25.11]    25.11Computer:
 This subclass is indented under the class definition.  Apparatus comprising means which gives the result of a mathematical operation involving the weight evaluator.

SEE OR SEARCH CLASS:

700Data Processing: Generic Control Systems or Specific Applications,   subclass 305 for weight control.
702Data Processing: Measuring, Calibrating, or Testing,   subclasses 101+ for calibration of weight measurement data or apparatus, subclass 129 for article count or size distribution by weight and subclasses 173+ for a generic weight measurement system.
705Data Processing: Financial, Business Practice, Management, or Cost/Price Determination,   subclass 407 , for a postage meter system including (a) a weighing device to determine the weight of an article and (b) an electrical computing arrangement to calculate a postage fee based on the determined weight;and subclasses 414+, for determining the cost per unit weight of a material by an electrical computing arrangement.
  
[List of Patents for class 177 subclass 25.12]    25.12Electrical:
 This subclass is indented under subclass 25.11.  Apparatus where the mathematical operation is performed by an electrical or electronic devices.
  
[List of Patents for class 177 subclass 25.13]    25.13Digital:
 This subclass is indented under subclass 25.12.  Apparatus where the electrical or electronic devices performs the mathematical operation using discrete data, (e.g., by means of a microprocessor or other electronic calculating means, acquired through an analog to digital conversion means).
  
[List of Patents for class 177 subclass 25.14]    25.14Multiplying or dividing scales:
 Apparatus under 25.13 where the mathematical operation includes multiplying or dividing the results of a weighing operation by user determined input(s).
  
[List of Patents for class 177 subclass 25.15]    25.15Price:
 This subclass is indented under subclass 25.14.  Apparatus where the user input is unit price information, used to determined the total cost of the material being weighed (e.g., grocery store or postage scales).
  
[List of Patents for class 177 subclass 25.16]    25.16Calorie counting:
 This subclass is indented under subclass 25.14.  Apparatus where the user input is information relating to the caloric content of food stuffs being weighed.
  
[List of Patents for class 177 subclass 25.17]    25.17Counting:
 This subclass is indented under subclass 25.14.  Apparatus where the user input is unit weight information to enable the number of articles being weighed to be determined from the total weight of the articles.
  
[List of Patents for class 177 subclass 25.18]    25.18Combinatorial scales:
 This subclass is indented under subclass 25.13.  Apparatus where increments of weight are determined by one or more weighers, deposited in hoppers and combined in various ways to obtain a combination which most closely approaches a target value.
  
[List of Patents for class 177 subclass 25.19]    25.19Weight history:
 This subclass is indented under subclass 25.12.  Apparatus where the device maintains a memory of previous weight value for an individual, object, class of objects or a sum of serial increments of fluent material.
  
[List of Patents for class 177 subclass 26]    26Computer and weigher independently operated by common load holder:
 This subclass is indented under subclass 25.11.  Apparatus wherein a load holder is connected to evaluating structure optionally operable to separately weigh or to separately give a computed value of the load.
  
[List of Patents for class 177 subclass 27]    27Weighing beam dial and computing beam dial with separate poises:
 This subclass is indented under subclass 26.  Apparatus including separate slidable poises on diversely calibrated balance beams.
  
[List of Patents for class 177 subclass 28]    28Separately pivoted beams:
 This subclass is indented under subclass 27.  Apparatus wherein the weighing dial and the computing dial are on separate beams having separate pivots.
  
[List of Patents for class 177 subclass 29]    29Tabular-type computer:
 This subclass is indented under subclass 27.  Apparatus wherein the calibrations on one of the diversely calibrated beams comprises a chart.
  
[List of Patents for class 177 subclass 30]    30Ancillary weigher:
 This subclass is indented under subclass 25.11.  Apparatus in which a weight responsive structure, additional to the weigher, positions a datum scale relative to the path of the weight evaluating member of the weigher or modifies the response of the indicator elements to the weight evaluator.
  
[List of Patents for class 177 subclass 31]    31Independent computer scale and index:
 This subclass is indented under subclass 25.11.  Apparatus comprising a datum scale and index independent of the weigher scale and index.
  
[List of Patents for class 177 subclass 32]    32With adjustable linkage to weight offsetting means:
 This subclass is indented under subclass 31.  Apparatus having an adjustable structure driving the computer reading structure from the load force offsetting means.
  
[List of Patents for class 177 subclass 33]    33Coaxial pointers:
 This subclass is indented under subclass 32.  Apparatus in which the driven computer reading structure includes a pointer that is mounted coaxially with a weigher pointer.
  
[List of Patents for class 177 subclass 34]    34Tabular-type computer:
 This subclass is indented under subclass 25.11.  Apparatus comprising a plurality of diverse datum scales showing results calculated from certain data including a weight evaluation.
  
[List of Patents for class 177 subclass 35]    35Slidable poise moves table:
 This subclass is indented under subclass 34.  Apparatus wherein a slidable poise portions the chart.
  
[List of Patents for class 177 subclass 36]    36Weigher moves table:
 This subclass is indented under subclass 34.  Apparatus wherein the chart is moved by the weight sensor.
  
[List of Patents for class 177 subclass 37]    37Rotatable drum:
 This subclass is indented under subclass 36.  Apparatus in which the chart is in the form of a rotatable drum.
  
[List of Patents for class 177 subclass 38]    38With manually operated reading assistance:
 This subclass is indented under subclass 37.  Apparatus including a member moved manually over the face of the chart to pick out or expose a section thereof.
  
[List of Patents for class 177 subclass 39]    39With additional reading window in drum housing:
 This subclass is indented under subclass 37.  Apparatus including oppositely disposed reading windows in the drum casing.
  
[List of Patents for class 177 subclass 40]    40Encased disc:
 This subclass is indented under subclass 36.  Apparatus wherein the chart is a flat circular plate enclosed in a housing.
  
[List of Patents for class 177 subclass 41]    41Externally movable table:
 This subclass is indented under subclass 34.  Apparatus wherein the chart is externally movable relating to the path of the pointer of the weigher.
  
[List of Patents for class 177 subclass 42]    42Axially rotatable:
 This subclass is indented under subclass 41.  Apparatus wherein the chart is rotatable about a longitudinal axis.
  
[List of Patents for class 177 subclass 43]    43Calibrated index arm:
 This subclass is indented under subclass 34.  Apparatus wherein the chart is traversed by a weigher driven arm having calibrations correlated with datum scales on the chart.
  
[List of Patents for class 177 subclass 44]    44Table integral with balance beam:
 This subclass is indented under subclass 34.  Apparatus in which the chart extends along a balance arm carrying a slidable poise.
  
[List of Patents for class 177 subclass 45]    45WITH ALARM OR SIGNAL:
 This subclass is indented under the class definition.  Apparatus with means to audibly or visually convey information in addition to that of the regular weigher indicator.

SEE OR SEARCH CLASS:

40Card, Picture, or Sign Exhibiting,   subclass 458 for a changeable exhibitor operated or controlled by a weigher.
340Communications: Electrical,   subclass 666 for a weight operated electrical alarm.
  
[List of Patents for class 177 subclass 46]    46In unbalance:
 This subclass is indented under subclass 45.  Apparatus wherein a signal or indicator is given when the load differs from the desired datum or preset i.e., just before the balance of a beam overload.
  
[List of Patents for class 177 subclass 47]    47In balance:
 This subclass is indented under subclass 45.  Apparatus which indicates the attainment of the desired datum or preset.
  
[List of Patents for class 177 subclass 48]    48Electric:
 This subclass is indented under subclass 47.  Apparatus wherein the signal or indication is given electrically.
  
[List of Patents for class 177 subclass 49]    49Of additional counterpoise:
 This subclass is indented under subclass 45.  Apparatus relating to the operative presence of additional counterpoise.
  
[List of Patents for class 177 subclass 50]    50WITH TESTING:
 This subclass is indented under the class definition.  Apparatus wherein a test is performed.
  
[List of Patents for class 177 subclass 51]    51Coin size:
 This subclass is indented under subclass 50.  Apparatus having a size gauging structure.

SEE OR SEARCH CLASS:

73Measuring and Testing,   subclass 163 for miscellaneous coin testing and see the search notes in the definition of that subclass.
  
[List of Patents for class 177 subclass 52]    52WITH CONVEYING MEANS HANDLING SUCCESSIVE RECEIVERS:
 This subclass is indented under the class definition.  Apparatus having means by which the movement of a series of removable containers relative to a filling and weighing station is correlated with the weighing operation.

SEE OR SEARCH CLASS:

141Fluent Material Handling, With Receiver or Receiver Coacting Means,   subclasses 129+ for handling successive receivers in a relation other than correlated with a weighing operation.
209Classifying, Separating, and Assorting Solids,   subclasses 510+ , 592+, and 645+ for means for automatically sorting articles by weight.
414Material or Article Handling,   subclass 21 for material handling devices wherein there is some moving of the material besides that incidental to the weighing operation.
  
[List of Patents for class 177 subclass 53]    53Receiver presence responsive:
 This subclass is indented under subclass 52.  Apparatus wherein a receiver in filling position on the conveying means controls operation of the weigher.
  
[List of Patents for class 177 subclass 54]    54Rotary:
 This subclass is indented under subclass 52.  Apparatus wherein a rotary conveyor transports the receivers to the filling means.
  
[List of Patents for class 177 subclass 55]    55Separate weigh chamber:
 This subclass is indented under subclass 54.  Apparatus wherein the receiver on the conveyor is subsequently filled from a distinct priorly operated weigh chamber.
  
[List of Patents for class 177 subclass 56]    56Separate weigh chamber:
 This subclass is indented under subclass 52.  Apparatus wherein the receiver on the conveyor is subsequently filled from a distinct priorly operated weigh chamber.
  
[List of Patents for class 177 subclass 57]    57Simultaneously operated weigh chambers:
 This subclass is indented under subclass 56.  Apparatus wherein a plurality of weighing means operate simultaneously.
  
[List of Patents for class 177 subclass 58]    58PLURAL WEIGHERS ON ROTARY SUPPORT:
 This subclass is indented under the class definition.  Apparatus having a plurality of weighers carried in a circular path by rotating supporting means.
  
[List of Patents for class 177 subclass 59]    59DISCHARGE FROM WEIGHER TO RECEIVER:
 This subclass is indented under the class definition.  Apparatus including means for delivering a load from a weigh chamber to a removable container.
  
[List of Patents for class 177 subclass 60]    60WEIGHER RESPONSIVE MATERIAL CONTROL:
 This subclass is indented under the class definition.  Apparatus wherein a weigh chamber actuates material supply control means.

SEE OR SEARCH CLASS:

137Fluid Handling,   subclasses 403+ for liquid level control by weight of accumulated liquid.
209Classifying, Separating, and Assorting Solids,   subclasses 510+ , 592+, and 645+ for means for automatically sorting articles by weight.
222Dispensing,   subclass 58 for a dispenser having means responsive to the weight of material in the supply container for controlling its discharge.
  
[List of Patents for class 177 subclass 61]    61Translatable among plural sources:
 This subclass is indented under subclass 60.  Apparatus wherein a weigh chamber is translated among a plurality of feeding sources.
  
[List of Patents for class 177 subclass 62]    62Remote discharge station:
 This subclass is indented under subclass 60.  Apparatus wherein a discharge station is remote from the filling station.
  
[List of Patents for class 177 subclass 63]    63With additional material-presence responsive means:
 This subclass is indented under subclass 60.  Apparatus including additional means responsive to the presence of material, e.g., regulators.
  
[List of Patents for class 177 subclass 64]    64Controlling feed:
 This subclass is indented under subclass 63.  Apparatus wherein the additional means controls feed means.
  
[List of Patents for class 177 subclass 65]    65To alternating weigh chambers:
 This subclass is indented under subclass 64.  Apparatus wherein the feed is directed to each of alternating weigher chambers.
  
[List of Patents for class 177 subclass 66]    66And discharge:
 This subclass is indented under subclass 64.  Apparatus also controlling discharge means.
  
[List of Patents for class 177 subclass 67]    67Overload removal:
 This subclass is indented under subclass 66.  Apparatus also controlling overload removal means.
  
[List of Patents for class 177 subclass 68]    68Flow terminator requiring external reset:
 This subclass is indented under subclass 60.  Apparatus which terminates flow of material in response to movement of the weigh chamber the necessary reestablishment of flow being initiated by an external operator.
  
[List of Patents for class 177 subclass 69]    69Plural feed, simultaneous cutoff:
 This subclass is indented under subclass 68.  Apparatus wherein a plurality of feeding sources are cut off simultaneously.
  
[List of Patents for class 177 subclass 70]    70Sequential feeding, plural ingredients:
 This subclass is indented under subclass 68.  Apparatus wherein a plurality of feeding sources with different ingredients are used sequentially.
  
[List of Patents for class 177 subclass 71]    71Feed and discharge:
 This subclass is indented under subclass 68.  Apparatus controlling both the feed to and discharge from the weigher.
  
[List of Patents for class 177 subclass 72]    72Manually initiated discharge:
 This subclass is indented under subclass 71.  Apparatus provided with manually actuated means controlling discharge from the weigh chamber.
  
[List of Patents for class 177 subclass 73]    73Receiver operated reset:
 This subclass is indented under subclass 68.  Apparatus wherein the external reset is incidental to placement of a receiver in feeding position on the weigher.
  
[List of Patents for class 177 subclass 74]    74Latch release:
 This subclass is indented under subclass 68.  Apparatus wherein the movement of the weigh chamber causes the release of a latch.
  
[List of Patents for class 177 subclass 75]    75Sequential latch release:
 This subclass is indented under subclass 74.  Apparatus having a plurality of latches released in sequence.
  
[List of Patents for class 177 subclass 76]    76With magnetic operator:
 This subclass is indented under subclass 74.  Apparatus wherein the latch is released by a magnetic operator.
  
[List of Patents for class 177 subclass 77]    77With serially connected switch:
 This subclass is indented under subclass 76.  Apparatus wherein the release of the latch causes actuation of a switch in series circuit with the magnetic operator.
  
[List of Patents for class 177 subclass 78]    78Reciprocating closure:
 This subclass is indented under subclass 74.  Apparatus wherein the latch controls a reciprocating closure member.
  
[List of Patents for class 177 subclass 79]    79Holding magnet:
 This subclass is indented under subclass 68.  Apparatus wherein movement of the weigh chamber controls an electric circuit to a magnetic holding coil.
  
[List of Patents for class 177 subclass 80]    80With external intercontrol:
 This subclass is indented under subclass 60.  Apparatus correlated with an additional distinct control means.
  
[List of Patents for class 177 subclass 81]    81Initial partial charge:
 This subclass is indented under subclass 80.  Apparatus wherein an initial partial change is fed to the weigh chamber prior to a finishing feed and one of the feeds is controlled by external means.
  
[List of Patents for class 177 subclass 82]    82Overload removal:
 This subclass is indented under subclass 60.  Apparatus controlling discharge from the weigh chamber of material in excess of the desired predetermined weight.

SEE OR SEARCH THIS CLASS, SUBCLASS:

67,for additional material-presence-responsive means controlling the overload.
  
[List of Patents for class 177 subclass 83]    83Rotary:
 This subclass is indented under subclass 60.  Apparatus wherein the weigh chamber is mounted for unidirectional rotation.

SEE OR SEARCH CLASS:

73Measuring and Testing,   subclasses 217+ for a rotary tank type of volume or rate of flow meter.
  
[List of Patents for class 177 subclass 84]    84Power-driven:
 This subclass is indented under subclass 83.  Apparatus wherein an external energy source moves the weigh chamber.
  
[List of Patents for class 177 subclass 85]    85Electromagnetic latch release:
 This subclass is indented under subclass 83.  Apparatus wherein the movement of the rotary weigh chamber is controlled by an electromagnetically actuated latch release.
  
[List of Patents for class 177 subclass 86]    86With preliminary translation:
 This subclass is indented under subclass 83.  Apparatus wherein the translation of the axis under the load received in the weigh chamber controls its turning.
  
[List of Patents for class 177 subclass 87]    87Initiates feed control operation:
 This subclass is indented under subclass 86.  Apparatus in which the translation also controls feed.
  
[List of Patents for class 177 subclass 88]    88By cam on weigh chamber:
 This subclass is indented under subclass 87.  Apparatus wherein the feed control is achieved by cam structure mounted on the rotary weigh chamber.
  
[List of Patents for class 177 subclass 89]    89Stationary weigh chamber:
 This subclass is indented under subclass 60.  Apparatus wherein the load is carried and controlled by movement of the floor or discharge gate of the weigh chamber, the body of the weigh chamber having no movement.
  
[List of Patents for class 177 subclass 90]    90Alternating weigh chambers:
 This subclass is indented under subclass 60.  Weighers wherein the weighing operation occurs alternately in two weigh chambers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

65,for additional material-presence-responsive means related to alternating weigh chambers.
  
[List of Patents for class 177 subclass 91]    91Divided unit:
 This subclass is indented under subclass 90.  Weighers in which the weigh chambers are compartments of a chamber divided by a partition.
  
[List of Patents for class 177 subclass 92]    92With relatively oscillating partition:
 This subclass is indented under subclass 91.  Weighers wherein the partition oscillates relative to the weigh chamber.
  
[List of Patents for class 177 subclass 93]    93Pivoted feed diverter:
 This subclass is indented under subclass 92.  Weighers wherein the alternation of feed to the weigh chamber is controlled by a diverter pivotally mounted on the partition.
  
[List of Patents for class 177 subclass 94]    94Oscillating:
 This subclass is indented under subclass 91.  Weighers wherein the alternation is by oscillation.
  
[List of Patents for class 177 subclass 95]    95Valve means correlated with weigh chamber:
 This subclass is indented under subclass 94.  Weighers including valve means.
  
[List of Patents for class 177 subclass 96]    96Opened by gravity:
 This subclass is indented under subclass 95.  Weighers opened by gravity.
  
[List of Patents for class 177 subclass 97]    97Mounted externally of weigh chamber:
 This subclass is indented under subclass 95.  Weighers wherein the valve means is relatively fixedly mounted externally of the weigh chamber.
  
[List of Patents for class 177 subclass 98]    98Feed diverter:
 This subclass is indented under subclass 90.  Weigh chambers wherein the lowering of one weigh chamber actuates a diverter located within or at the discharge end of a feed hopper to direct material to another weigh chamber.
  
[List of Patents for class 177 subclass 99]    99With discharge valve:
 This subclass is indented under subclass 98.  Weigh chambers wherein the diverter is correlated with discharge valves of the weigh chambers.
  
[List of Patents for class 177 subclass 100]    100Valved discharge:
 This subclass is indented under subclass 90.  Weigh chambers wherein the discharge of the weighed material is through valve means.

SEE OR SEARCH THIS CLASS, SUBCLASS:

99,for a discharge valve correlated with a feed diverter.
  
[List of Patents for class 177 subclass 101]    101Siphon discharge:
 This subclass is indented under subclass 90.  Weigh chambers wherein the discharge is accomplished by siphon means.
  
[List of Patents for class 177 subclass 102]    102Oscillating:
 This subclass is indented under subclass 90.  Weigh chambers wherein the weigh chambers are oscillated.
  
[List of Patents for class 177 subclass 103]    103Plural chambers:
 This subclass is indented under subclass 60.  Apparatus including a plurality of weigh chambers.

SEE OR SEARCH THIS CLASS, SUBCLASS:

90+,for alternating weigh chambers.
  
[List of Patents for class 177 subclass 104]    104With simultaneous discharge:
 This subclass is indented under subclass 103.  Devices so related that they discharge simultaneously.
  
[List of Patents for class 177 subclass 105]    105Discharge valve or gate:
 This subclass is indented under subclass 60.  Apparatus which discharges by the opening of a discharge valve or gate.

SEE OR SEARCH THIS CLASS, SUBCLASS:

23,for a weigher having a cycle totalizer, discharge valve operated.
  
[List of Patents for class 177 subclass 106]    106Opening initiated by feed terminator:
 This subclass is indented under subclass 105.  Weighers wherein a feed valve at closed position starts mechanism which opens the discharge valve.
  
[List of Patents for class 177 subclass 107]    107Closing initiates feed:
 This subclass is indented under subclass 105.  Device, on closing, starts mechanism to open feed valve means.
  
[List of Patents for class 177 subclass 108]    108Power actuated:
 This subclass is indented under subclass 105.  Weigher operated by the power of a source outside the weigher.
  
[List of Patents for class 177 subclass 109]    109Clutched:
 This subclass is indented under subclass 108.  Weigher with structure connectable between the outside power source and the valve.
  
[List of Patents for class 177 subclass 110]    110Magnetically operated:
 This subclass is indented under subclass 109.  Apparatus of the magnetic type.
  
[List of Patents for class 177 subclass 111]    111Mechanically interconnected with feed valve:
 This subclass is indented under subclass 105.  Device mechanically interconnected to a feed valve so that as one valve opens the other closes.
  
[List of Patents for class 177 subclass 112]    112With linkage operator:
 This subclass is indented under subclass 105.  Device operated by a linkage mechanism associated with the weigh chamber.
  
[List of Patents for class 177 subclass 113]    113Latch release:
 This subclass is indented under subclass 105.  Device held in closed position by a latch which is released by the weigh chamber.

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74,for an externally reset feed terminator latch released by the weigh chamber.
  
[List of Patents for class 177 subclass 114]    114Correlated feed and discharge:
 This subclass is indented under subclass 60.  Apparatus wherein discharging from the weigh chamber is correlated with feeding.

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87+,for a weigher in which a translation of a rotary weigh chamber controls feed.
99,for a feed controller diverting feed between alternating weigh chambers correlated with a discharge valve.
106,for a weigher in which the actuation of the feed flow terminator opens a discharge valve or gate.
107,for a weigher in which the closing of the weigh chamber discharge valve or gate initiates feed.
111,for mechanically interconnected feed and discharge valves.
  
[List of Patents for class 177 subclass 115]    115Oscillating weigh chamber:
 This subclass is indented under subclass 114.  Weigher wherein the weigh chamber oscillates between a filling position and a position where the weighed material spills over the edge of the weigh chamber.

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102,for alternating chambers that discharge by tilting.
  
[List of Patents for class 177 subclass 116]    116Feed:
 This subclass is indented under subclass 60.  Apparatus relating to the supply of material to the weigh chamber.

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64+,for control of feed responsive to additional material presence.
68+,for manually initiated feed with weigh chamber responsive cutoff.
98+,for a feed diverter controlling flow to alternating weigh chambers.
107,for initiation of a feed valve by closing of a discharge valve.
111,for a feed valve mechanically interconnected with a weigh chamber discharge valve or gate.
114,for correlated feed and discharge of a weigh chamber.

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222Dispensing,   subclass 55 for a controller that effects the discharge of a dispenser responsive to weight of unrestrained material to secure uniformity of discharge from the dispenser.
  
[List of Patents for class 177 subclass 117]    117Weigh chamber placement initiates flow:
 This subclass is indented under subclass 116.  Apparatus wherein the filling operation is initiated responsive to application of the weigh chamber to the weigher.
  
[List of Patents for class 177 subclass 118]    118With receiver retainer:
 This subclass is indented under subclass 116.  Apparatus including means to clamp a bag or other receiver in feed position.
  
[List of Patents for class 177 subclass 119]    119Conveyer:
 This subclass is indented under subclass 116.  Apparatus including a device advancing material by a continuous application of force additional to gravity.
  
[List of Patents for class 177 subclass 120]    120With feed cutoff:
 This subclass is indented under subclass 119.  Apparatus with feed cutoff means.
  
[List of Patents for class 177 subclass 121]    121Variable speed:
 This subclass is indented under subclass 119.  Apparatus operable at different speeds.
  
[List of Patents for class 177 subclass 122]    122Sequentially actuated flow control means:
 This subclass is indented under subclass 116.  Apparatus in which the feed control means responds first to a partial load in the weigh chamber to reduce the feed rate and then to a full load to cut off the feed.

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75,for a flow terminator requiring external reset including latch means sequentially operated.
121,for a feed conveyor operating at reduced speed near the end of the feed operation.
  
[List of Patents for class 177 subclass 123]    123Distinct controllers:
 This subclass is indented under subclass 122.  Apparatus comprising a plurality of distinct controllers.
  
[List of Patents for class 177 subclass 124]    124WITH LOCK OR SEAL:
 This subclass is indented under the class definition.  Apparatus including lock or seal means which prevents unauthorized use or adjustment.
  
[List of Patents for class 177 subclass 125]    125CHECK CONTROLLED:
 This subclass is indented under the class definition.  An immobilized weigher rendered operative by the use of a coin or substitute therefor.

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194Check-Actuated Control Mechanisms,   for check-controlled weighing devices. See section IV of the Class 194 definition.
  
[List of Patents for class 177 subclass 126]    126COLLAPSIBLE, FOLDABLE, KNOCKDOWN:
 This subclass is indented under the class definition.  Apparatus constructed to be moved relatively from operative position to form a compact inoperative unit.
  
[List of Patents for class 177 subclass 127]    127With carrying case:
 This subclass is indented under subclass 126.  Apparatus with a container or having structure forming the collapsed weigher elements into a unit enclosed by an outer covering.
  
[List of Patents for class 177 subclass 128]    128WITH REPAIR OR ASSEMBLY MEANS:
 This subclass is indented under the class definition.  Apparatus including means for repairing, removing, replacing or aiding in assembling or removing an element of a weigher assembly.
  
[List of Patents for class 177 subclass 129]    129CONVERTIBLE:
 This subclass is indented under the class definition.  Device in which by reorientation or by rearrangement or omission or addition of a part, there is obtained a second character or different kind of device having a different mode of operation.
  
[List of Patents for class 177 subclass 130]    130Hand truck:
 This subclass is indented under subclass 129.  Apparatus in which a weigher is converted to a hand truck by means disabling the weigher.
  
[List of Patents for class 177 subclass 131]    131Hand manipulatable load pickup device:
 This subclass is indented under subclass 129.  Apparatus in which a weigher is converted to a handling load holder such as a scoop or fork by means disabling the weigher.
  
[List of Patents for class 177 subclass 132]    132STRUCTURAL INSTALLATION:
 This subclass is indented under the class definition.  Apparatus with (1) means performing an operation external to the subject matter of this class (2) combined with a static construction installation, or (3) specifically related to a particular geos:graphic feature, wherein there is included only enough structure foreign to this class to associate it with the apparatus.
  
[List of Patents for class 177 subclass 133]    133Geographic:
 This subclass is indented under subclass 132.  Apparatus in which a weigher part is arranged relative to the earth.
  
[List of Patents for class 177 subclass 134]    134Pit:
 This subclass is indented under subclass 133.  Apparatus wherein the weigher part is installed in a cavity in the earth.
  
[List of Patents for class 177 subclass 135]    135With guard or shield:
 This subclass is indented under subclass 134.  Apparatus with means between movable weigher elements and the pit enclosure for preventing the entrance of undesirable material into the pit.
  
[List of Patents for class 177 subclass 136]    136Vehicle:
 This subclass is indented under subclass 132.  Apparatus in which the weigher is structurally related to vehicular load carrier.
  
[List of Patents for class 177 subclass 137]    137Running gear springs:
 This subclass is indented under subclass 136.  Apparatus wherein a vehicle load is indicated by means responsive to the yielding of the vehicle running gear springs.
  
[List of Patents for class 177 subclass 138]    138With indicator disconnect means:
 This subclass is indented under subclass 137.  Apparatus wherein the yield indicating means may be disconnected from the running gear.
  
[List of Patents for class 177 subclass 139]    139Unitary load transferrer and weigher:
 This subclass is indented under subclass 136.  Apparatus in which the load carrying section of the vehicle is supported from frame structure by weight responsive weigher elements in such a manner that release or disconnection of such elements will transfer such section onto the frame.
  
[List of Patents for class 177 subclass 140]    140Hand truck:
 This subclass is indented under subclass 136.  Apparatus provided with handle means for propulsion by an attendant.

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130,for a weigher convertible to a hand truck by the locking of the weight responsive elements.
  
[List of Patents for class 177 subclass 141]    141Hydraulic weigher:
 This subclass is indented under subclass 136.  Apparatus in which the weigher is of the hydraulic type.
  
[List of Patents for class 177 subclass 142]    142Building:
 This subclass is indented under subclass 132.  Apparatus in which the weigher is installed in or on a part of a building.
  
[List of Patents for class 177 subclass 143]    143Refrigerator:
 This subclass is indented under subclass 132.  Apparatus in which the weighing means is a part of a refrigerator.
  
[List of Patents for class 177 subclass 144]    144Furniture or room fixture:
 This subclass is indented under subclass 132.  Apparatus in which the weigher is installed in an article of furniture or in a room fixture or fitting.
  
[List of Patents for class 177 subclass 145]    145WITH WEIGHER LOADING OR UNLOADING MEANS:
 This subclass is indented under the class definition.  Apparatus including structure which transports a load relative to a load holder.

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52+,for the coordinated filling and conveying of successive receivers.
62,for a weigh chamber movable to a remote discharge station.
119+,for a weigh chamber responsive conveyor feeding the weigh chamber.

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198Conveyors: Power-Driven,   subclass 959 for a conveyor having a weighing feature wherein there is some moving of the material besides that necessary or incidental to the weighing operation.
406Conveyors: Fluid Current,   subclasses 23+ and 32+ for a fluid current conveyor including a weighing feature wherein there is some movement of the material besides that necessary or incidental to the weighing operation.
414Material or Article Handling,   subclass 21 for a material handling device including a weighing feature wherein there is some moving of the material besides that necessary or incidental to the weighing operation.
  
[List of Patents for class 177 subclass 146]    146Jack:
 This subclass is indented under subclass 145.  Apparatus comprising a unitary, portable, base supported weigher having structure by which the load holder may be moved upwardly to engage and lift the load.
  
[List of Patents for class 177 subclass 147]    147Hoist:
 This subclass is indented under subclass 145.  Apparatus including means by which a suspended weighing device lifts the load.

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212Traversing Hoists,   subclass 283 for a traversing hoist in combination with a weighing means which accomplishes more than the mere lifting and weighing of the load.
  
[List of Patents for class 177 subclass 148]    148Hand manipulatable weigher:
 This subclass is indented under subclass 145.  Apparatus including a unitary, portable material handling weigher having means by which it is manually moved as a whole in loading or unloading the load holder.

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131,for a hand manipulatable device convertible to a weigher by the release of means immobilizing the weigher.
  
[List of Patents for class 177 subclass 149]    149Container type:
 This subclass is indented under subclass 148.  Apparatus wherein the device is a container such as a bucket or scoop.
  
[List of Patents for class 177 subclass 150]    150EQUAL-ARM BEAM TRANSFER MECHANISM:
 This subclass is indented under the class definition.  Apparatus having mechanism by which the support of the beam of an equal arm weigher is transferred from the pivot to a nonweighing holder.
  
[List of Patents for class 177 subclass 151]    151LOAD-HOLDER TRANSFER MECHANISM:
 This subclass is indented under the class definition.  Apparatus having mechanism by which the support of the load holder is transferred from the transmission mechanism to a nonweighing support.
  
[List of Patents for class 177 subclass 152]    152Unitary with weigher:
 This subclass is indented under subclass 151.  Apparatus wherein the transfer mechanism includes elements of the load holder transmission.
  
[List of Patents for class 177 subclass 153]    153Transmission disconnect means:
 This subclass is indented under subclass 152.  Apparatus wherein the transfer is accomplished by means effecting the disconnection of transmission elements of the load holder.
  
[List of Patents for class 177 subclass 154]    154MEANS HOLDING LOAD-DRIVEN ELEMENT AGAINST MOTION:
 This subclass is indented under the class definition.  Apparatus securing a load responsive weighing element against motion.

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124,for a weigher having a lock or seal.
125,for a check released immobilized weigher.
130,for a weigher convertible to a hand truck by the locking of the weight responsive elements.
131,for a hand manipulated load pickup device with means immobilizing the weight responsive elements.
  
[List of Patents for class 177 subclass 155]    155Separates bearing parts:
 This subclass is indented under subclass 154.  Apparatus including means to hold bearing elements from engagement.

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150,for the separation of the bearing parts of an equal arm type weigher.
151+,for structure transferring the weight of a load holder from the weigher bearings.
  
[List of Patents for class 177 subclass 156]    156At transmission mechanism:
 This subclass is indented under subclass 154.  Apparatus wherein the holding device engages the load responsive element acting between the load holder and the weight indicating means.
  
[List of Patents for class 177 subclass 157]    157Balance beam:
 This subclass is indented under subclass 154.  Apparatus including structure for engaging and preventing movement of the beam of a beam type weigher.
  
[List of Patents for class 177 subclass 158]    158Plural beams:
 This subclass is indented under subclass 157.  Apparatus including a plurality of counterweight beams each provided with its own holding means.
  
[List of Patents for class 177 subclass 159]    159At indicator:
 This subclass is indented under subclass 154.  Apparatus wherein the holding device is located at the reading structure.
  
[List of Patents for class 177 subclass 160]    160SACK SUPPORT:
 This subclass is indented under the class definition.  Apparatus engaging and holding open the mouth of a sack.

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118,for a sack retainer with weight responsive material feed control.
  
[List of Patents for class 177 subclass 161]    161LOAD GUIDE:
 This subclass is indented under the class definition.  Apparatus including structure upon which the load may be moved to or from its supported position upon the weigher.

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59,for a weigher that discharges to a receiver.
  
[List of Patents for class 177 subclass 162]    162Chute:
 This subclass is indented under subclass 161.  Apparatus including an inclined trough.
  
[List of Patents for class 177 subclass 163]    163Rail:
 This subclass is indented under subclass 161.  Apparatus including a rail.

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134,for a weigher installed in a pit.
  
[List of Patents for class 177 subclass 164]    164PRESET:
 This subclass is indented under the class definition.  Apparatus in which the change in position of a first weigher element between balanced unloaded and balanced loaded position is a measure of the load and having (1) an additional element for adjusting the balance or zeroizing the weigher in its initial position or (2) means for setting weigher structure to coordinate the change of position of the first element with the load value.

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25.11+,for a computing type of preset.
  
[List of Patents for class 177 subclass 165]    165Responsive to load receiver:
 This subclass is indented under subclass 164.  Apparatus responsive to the weight or presence of a load receiver.
  
[List of Patents for class 177 subclass 166]    166Ancillary pointer:
 This subclass is indented under subclass 164.  Apparatus with a dial and pointer and including a second pointer adjustably connected to the first pointer.
  
[List of Patents for class 177 subclass 167]    167Fixed index or dial:
 This subclass is indented under subclass 164.  Apparatus in which the preset is of the fixed indicator element along which the weight indicative element is moved during the weighing operation.

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41+,for similar structure in which the fixed indicator element is a tabular type computer chart.
  
[List of Patents for class 177 subclass 168]    168Spring support:
 This subclass is indented under subclass 164.  Apparatus wherein the fixed end of a load offsetting spring is adjustable.
  
[List of Patents for class 177 subclass 169]    169Effective length of spring:
 This subclass is indented under subclass 168.  Apparatus including means for adjusting the length of the elastic section of the spring.
  
[List of Patents for class 177 subclass 170]    170Lever:
 This subclass is indented under subclass 168.  Apparatus in which the fixed end of the spring is mounted on an adjustable lever.
  
[List of Patents for class 177 subclass 171]    171Lever balance-type beam:
 This subclass is indented under subclass 164.  Apparatus immediately associated with a beam which is substantially level in both the balanced loaded and balanced unloaded conditions.
  
[List of Patents for class 177 subclass 172]    172Load-arm length:
 This subclass is indented under subclass 171.  Apparatus wherein the preset is of the load arm length of the beam.
  
[List of Patents for class 177 subclass 173]    173Indicator structure:
 This subclass is indented under subclass 164.  Apparatus wherein the preset is of the indicator or its immediate drive.

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32+,for a computing type indicator having an adjustable drive.
  
[List of Patents for class 177 subclass 174]    174Rack connection:
 This subclass is indented under subclass 173.  Apparatus wherein the presetting is accomplished through means connecting an indicator rack to its drive.
  
[List of Patents for class 177 subclass 175]    175In transmission:
 This subclass is indented under subclass 164.  Apparatus in which the presetting means is an element of or is carried by the structure transmitting force from the load holder.
  
[List of Patents for class 177 subclass 176]    176Counterweight:
 This subclass is indented under subclass 175.  Apparatus wherein the presetting element is a weight.
  
[List of Patents for class 177 subclass 177]    177ILLUMINATED:
 This subclass is indented under the class definition.  Apparatus including a light source.
  
[List of Patents for class 177 subclass 178]    178Projected:
 This subclass is indented under subclass 177.  Apparatus wherein light is directed through or by a movable part of the weigher to give a reading.

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353Optics: Image Projectors,   subclasses 40+ for an image projector in combination with a nominally claimed weighing scale.
  
[List of Patents for class 177 subclass 179]    179WITH BEARING SHIELD:
 This subclass is indented under the class definition.  Apparatus including a protective covering member immediately associated with a bearing.
  
[List of Patents for class 177 subclass 180]    180WITH CASING CLOSURE OR SHIELD:
 This subclass is indented under the class definition.  Apparatus comprising an external casing having an opening protected by a seal, shield or removable section.

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127,for a carrying case for a collapsible weigher.
135,for a guard or shield for platform openings of a pit type weigher.
  
[List of Patents for class 177 subclass 181]    181Transparent:
 This subclass is indented under subclass 180.  Apparatus in which the closure is transparent.
  
[List of Patents for class 177 subclass 182]    182Lens:
 This subclass is indented under subclass 181.  Apparatus in which the transparent section includes a magnification lens.
  
[List of Patents for class 177 subclass 183]    183LUBRICATOR:
 This subclass is indented under the class definition.  Apparatus having means for lubricating the weigher.
  
[List of Patents for class 177 subclass 184]    184SHOCK ABSORBER, DAMPER:
 This subclass is indented under the class definition.  Apparatus having means to damp mechanism or protect it from shock.

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139,for a vehicle mounted weigher protected from shock by immobilizing or relieving means.
150,for an equal arm type weigher protected from shock by beam transfer mechanism.
195+,for an equal arm weigher inherently damped by spring means.

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188Brakes,   subclasses 297+ for a fluid-resistance shock absorber or damper of general utility.
  
[List of Patents for class 177 subclass 185]    185Electrical or magnetic:
 This subclass is indented under subclass 184.  Apparatus wherein damping is accomplished by an electrical or magnetic field.
  
[List of Patents for class 177 subclass 186]    186Indicator mechanism:
 This subclass is indented under subclass 184.  Apparatus directly associated with the indicator or its immediate drive.

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159,for means holding an indicator against motion.

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73Measuring and Testing,   subclass 430 for instrument mechanism damping means of general application.
  
[List of Patents for class 177 subclass 187]    187Load-holder transmission mechanism:
 This subclass is indented under subclass 184.  Apparatus which acts on an element of the load force transmitting linkage connected to the load holder.

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156,for a means at the load holder transmission for holding it against motion.
  
[List of Patents for class 177 subclass 188]    188Fulcrumed lever:
 This subclass is indented under subclass 187.  Apparatus wherein the element is a rocking lever.
  
[List of Patents for class 177 subclass 189]    189Load holder:
 This subclass is indented under subclass 184.  Apparatus mounted for cooperation with the load holder.

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151+,for means transferring a load holder to a nonweighing support.
  
[List of Patents for class 177 subclass 190]    190EQUAL ARM TYPE:
 This subclass is indented under the class definition.  Apparatus comprising a beam balance with the fulcrum thereof located at the midpoint between connections supporting a load and a counterweight holder.
  
[List of Patents for class 177 subclass 191]    191With counterweight manipulating means:
 This subclass is indented under subclass 190.  Apparatus with means for handling a counterweight.
  
[List of Patents for class 177 subclass 192]    192Elongated flexible counterweight:
 This subclass is indented under subclass 191.  Apparatus wherein the counterweight is a flexible chain.
  
[List of Patents for class 177 subclass 193]    193With indicator tower:
 This subclass is indented under subclass 190.  Apparatus with a structure rising above the beam to house a weight indicator.
  
[List of Patents for class 177 subclass 194]    194With bias toward balance:
 This subclass is indented under subclass 190.  Apparatus having means imposing a position restoring force to the beam proportional to the deflection of the beam from its position of balance.
  
[List of Patents for class 177 subclass 195]    195By spring:
 This subclass is indented under subclass 194.  Apparatus wherein the position restoring force is supplied by a spring.
  
[List of Patents for class 177 subclass 196]    196Torsion bearing type:
 This subclass is indented under subclass 195.  Apparatus wherein the spring serves as a bearing.
  
[List of Patents for class 177 subclass 197]    197With longitudinally movable poise:
 This subclass is indented under subclass 190.  Apparatus having structure supporting a slidable poise.
  
[List of Patents for class 177 subclass 198]    198With check link:
 This subclass is indented under subclass 190.  Apparatus having linkage maintaining the attitude of the load or counterweight holder.
  
[List of Patents for class 177 subclass 199]    199PLURAL DISTINCT LOAD HOLDERS WITH COMMON EVALUATOR:
 This subclass is indented under the class definition.  Apparatus having a plurality of load holders operative with a common load evaluator.
  
[List of Patents for class 177 subclass 200]    200Load comparing type:
 This subclass is indented under subclass 199.  Apparatus operating to compare the load on one holder to that on another.

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30,for a computing type weigher having an ancillary load holder effecting the response of the weigher to the load on the main load holder.
190+,for an equal arm type weigher.
  
[List of Patents for class 177 subclass 201]    201SELF-POSITIONING:
 This subclass is indented under the class definition.  Apparatus in which weigher elements assume a balanced position or condition indicative of load value in response to the application of the load.
  
[List of Patents for class 177 subclass 202]    202Offsets over or under load:
 This subclass is indented under subclass 201.  Apparatus wherein the indication is of both the valve and direction of unbalance of an even balance type weigher.

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194+,for an equal arm type of weigher biased toward balance.
  
[List of Patents for class 177 subclass 203]    203Supplemental weight offsetting means:
 This subclass is indented under subclass 201.  Apparatus having an additional load force counterbalancing means combined with the self positioning indicating elements.

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194+,for an equal arm type weigher with a bias toward balance.
200,for a load comparing weigher with plural distinct load holders.
  
[List of Patents for class 177 subclass 204]    204Transferred responsive to self-positioning means:
 This subclass is indented under subclass 203.  Apparatus responsive to a movement of the self positioning offsetting means.
  
[List of Patents for class 177 subclass 205]    205Remote indicator:
 This subclass is indented under subclass 203.  Apparatus with remote reading structure interconnected with supplemental means.

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49,for a weigher with a signal indicating the use of a supplemental counterweight.
  
[List of Patents for class 177 subclass 206]    206Slidable weight:
 This subclass is indented under subclass 203.  Apparatus wherein the means is a slidably mounted weight.

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176,for similar structure zeroizing the weigher.
  
[List of Patents for class 177 subclass 207]    207Buoyancy type:
 This subclass is indented under subclass 201.  Apparatus which employs the lifting effect of a fluid on a float.
  
[List of Patents for class 177 subclass 208]    208Fluid transmission to pressure gauge:
 This subclass is indented under subclass 201.  Apparatus wherein fluid pressure proportional to weight is communicated to a device responsive to pressure.

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141,for a hydraulic weigher installed on a vehicle.
  
[List of Patents for class 177 subclass 209]    209Interconnected load-supporting expansible chamber:
 This subclass is indented under subclass 208.  Apparatus wherein the pressure is developed by the action of the load holder on a plurality of interconnected expansible chambers.
  
[List of Patents for class 177 subclass 210]    210Electrical current generating or modifying:
 This subclass is indented under subclass 201.  Apparatus wherein an electric current is generated or modified and the value of such current is taken as the weight value.

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73Measuring and Testing,   subclasses 763+ for a stress or strain testing device of the current generating or modifying type.
200Electricity: Circuit Makers and Breakers,   subclass 85 for a weight controlled switch.
324Electricity: Measuring and Testing,   subclass 71.1 for the determination of nonelectrical properties in general by measuring electrical properties.
338Electrical Resistors,   subclasses 2+ for a strain gauge type electrical resistor and subclass 47 for a resistor responsive to force.
  
[List of Patents for class 177 subclass 211]    211Strain gauge:
 This subclass is indented under subclass 210.  Apparatus wherein the strain of a deformable member is measured.
  
[List of Patents for class 177 subclass 212]    212Repositioning in response to deflection under load:
 This subclass is indented under subclass 201.  Apparatus including means responsive to a movement of a weigher element under load actuating a device tending to restore the element to its original position.
  
[List of Patents for class 177 subclass 213]    213Electrically actuated poise:
 This subclass is indented under subclass 212.  Apparatus wherein the balance of a beam is brought about by a poise slidable thereon and actuated by electrical means responsive to the deflection of the beam.
  
[List of Patents for class 177 subclass 214]    214With indicator of poise position:
 This subclass is indented under subclass 213.  Apparatus wherein an indicator is correlated with the poise.
  
[List of Patents for class 177 subclass 215]    215Speed control of poise:
 This subclass is indented under subclass 213.  Apparatus wherein the speed of the poise in its movement along the beam is varied.
  
[List of Patents for class 177 subclass 216]    216Pendulum:
 This subclass is indented under subclass 201.  Apparatus wherein a suspended poise is arranged to swing in proportion to the load applied.

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73Measuring and Testing,   subclasses 836 and 862.381+ for a push or pull force measuring device of the pendulum type.
  
[List of Patents for class 177 subclass 217]    217Plural opposed:
 This subclass is indented under subclass 216.  Apparatus including two pendulums mounted on coaxial or parallel pivots and which swing in opposite directions in counter-balancing the load.
  
[List of Patents for class 177 subclass 218]    218Translatable:
 This subclass is indented under subclass 217.  Apparatus in which the pivots translate as the poises swing.
  
[List of Patents for class 177 subclass 219]    219Tape-driven:
 This subclass is indented under subclass 217.  Apparatus wherein the swing of the poises is produced by pull through a flexible member.
  
[List of Patents for class 177 subclass 220]    220Drives indicator through transmission mechanism:
 This subclass is indented under subclass 216.  Apparatus including an independently mounted indicating element driven by the pendulum.

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13,for a recording type indicator set by a weigher.
36,for a tabular type indicator chart driven by a weigher.
  
[List of Patents for class 177 subclass 221]    221Flexible member:
 This subclass is indented under subclass 220.  Apparatus including a flexible pull member.
  
[List of Patents for class 177 subclass 222]    222Gearing:
 This subclass is indented under subclass 220.  Apparatus including a gear.
  
[List of Patents for class 177 subclass 223]    223Rectilinear rack:
 This subclass is indented under subclass 222.  Apparatus including a straight rack and a pinion.
  
[List of Patents for class 177 subclass 224]    224Pointer fixed to pendulum:
 This subclass is indented under subclass 216.  Apparatus having a pointer fixed to the swingable poise.
  
[List of Patents for class 177 subclass 225]    225Spring:
 This subclass is indented under subclass 201.  Apparatus having an elastic body arranged to yield in proportion to the load applied.

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137+,for vehicle running gear springs used for weighing.
168+,for a preset means for a spring support.
195+,for an equal arm weigher biased toward balance by a spring.
  
[List of Patents for class 177 subclass 226]    226Temperature compensator:
 This subclass is indented under subclass 225.  Apparatus including means to compensate for temperature changes.
  
[List of Patents for class 177 subclass 227]    227Modifies leverage:
 This subclass is indented under subclass 226.  Apparatus effective to change the distance between the pivot points of a lever located in the force train between a load holder and a spring.
  
[List of Patents for class 177 subclass 228]    228Acts on spring:
 This subclass is indented under subclass 226.  Apparatus acting on or built into the spring.
  
[List of Patents for class 177 subclass 229]    229Cantilever:
 This subclass is indented under subclass 225.  Apparatus comprising a projecting elastic member supported at one end and loaded at the other.
  
[List of Patents for class 177 subclass 230]    230Force modifier connects spring and load-holder:
 This subclass is indented under subclass 225.  Apparatus including means for delivering a force from the load holder to the spring proportional to, but changed in direction or intensity from, the direct gravity force of the load.
  
[List of Patents for class 177 subclass 231]    231Load-holder steadying structure and spring carried by casing:
 This subclass is indented under subclass 225.  Apparatus wherein an external casing supports one end of the spring and carries structure limiting tilting movement of a load holder acting on the other end of the spring.
  
[List of Patents for class 177 subclass 232]    232Coil spring in sleeve casing:
 This subclass is indented under subclass 225.  Apparatus comprising a helical coil spring within a casing having a constant cross sectional area in its spring enclosing section corresponding to that of the spring.
  
[List of Patents for class 177 subclass 233]    233With vertical pointer slit:
 This subclass is indented under subclass 232.  Apparatus wherein the casing has a longitudinal slit within which a weight indicator moves in response to load.
  
[List of Patents for class 177 subclass 234]    234Magnified indication of spring deformation:
 This subclass is indented under subclass 225.  Apparatus including a reading device moved by the deformation of the spring an amount greater than, but proportional to, such deformation.

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211,for a weigher in which the deformation is measured electrically.
  
[List of Patents for class 177 subclass 235]    235Counterweight type:
 This subclass is indented under subclass 201.  Apparatus relating to counterweight type.
  
[List of Patents for class 177 subclass 236]    236Variable fulcrum:
 This subclass is indented under subclass 235.  Apparatus wherein the imposition of the load shifts the fulcrum point of a balancing load and counterweight to a position at which the load and counterweight moments are equal.
  
[List of Patents for class 177 subclass 237]    237Progressive counterweight pickup:
 This subclass is indented under subclass 235.  Apparatus wherein weight units are progressively lifted from a support.

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204,for the pickup of capacity changing weights of a self balancing weigher.
  
[List of Patents for class 177 subclass 238]    238WITH CASING:
 This subclass is indented under the class definition.  Apparatus with an enclosing member, fixture, or attachment to protect the device or part thereof from soil, contamination, injury, theft or loss; or to protect persons or things from injury through contact with the weigher or part thereof.

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127,for a collapsible foldable knockdown weigher with carrying case.
179,for a bearing shield.
180+,for a casing closure or shield.
231,for a load holder steadying structure and spring carried by casing.
232+,for a coil spring in a sleeve casing.
  
[List of Patents for class 177 subclass 239]    239Base:
 This subclass is indented under subclass 238.  Apparatus wherein the casing forms a bottom structure enclosing and supporting weigher elements.
  
[List of Patents for class 177 subclass 240]    240With standard:
 This subclass is indented under subclass 239.  Apparatus with an upright support carried by the bottom structure.
  
[List of Patents for class 177 subclass 241]    241Carrying additional housing:
 This subclass is indented under subclass 240.  Apparatus with an additional housing supported on the standard.
  
[List of Patents for class 177 subclass 242]    242Access opening in cylindrical wall:
 This subclass is indented under subclass 241.  Apparatus wherein the housing is cylindrical and has an external opening in the cylindrical wall.

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181+,for a closure or shield for a casing opening comprising a transparent section or lens.
  
[List of Patents for class 177 subclass 243]    243Penetrated by load-holder support:
 This subclass is indented under subclass 239.  Apparatus wherein a load holder is supported by a member projecting through a wall of the housing.
  
[List of Patents for class 177 subclass 244]    244ASSEMBLY SUPPORT:
 This subclass is indented under the class definition.  Apparatus provided with a support for an entire weighing assembly.

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131,for a hand manipulatable load pickup device convertible to a weigher.
148+,for a hand manipulated weigher.
  
[List of Patents for class 177 subclass 245]    245COMBINED:
 This subclass is indented under the class definition.  Apparatus combined with a device or structure having (1) a function other than weighing or (2) serving to perfect such apparatus for its intended primary purpose.

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40Card, Picture, or Sign Exhibiting,   subclass 458 for a changeable exhibitor operated or controlled by a weigher.
209Classifying, Separating, and Assorting Solids,   subclass 239 for a sifting means associated with a weigher.
356Optics: Measuring and Testing,   subclass 54 for egg candlers combined with weighing scales having no novel structure.
  
[List of Patents for class 177 subclass 246]    246BEAM:
 This subclass is indented under the class definition.  Apparatus comprising a lever and fulcrum upon which load force and a counterweight means may be directly balanced against each other.

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44,for a beam computing table.
171,for a beam with presetting means.
190+,for a beam weigher of the equal arm type.
202,for a balancing beam type weigher with an over or under load offsetting means.
235+,for a self balancing weigher of the counterweight type.
  
[List of Patents for class 177 subclass 247]    247Coarse and fine sliders:
 This subclass is indented under subclass 246.  Apparatus wherein one counterweight is adjustable along a beam slide and another lighter counterweight is adjustable along another slide.
  
[List of Patents for class 177 subclass 248]    248Plural counterweight pickup:
 This subclass is indented under subclass 246.  Apparatus having plural counterweights with related structure to place one or more of them on the beam from a stored position.

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191+,for counterweight manipulating means installed on an equal arm type weigher.
204,for the supply or removal of a capacity changing weight on a self positioning weigher.
216+,for self positioning counterweights of the pendulum type.
235+,for other self positioning counterweights.
  
[List of Patents for class 177 subclass 249]    249Transmission interconnected with slidable counterweight:
 This subclass is indented under subclass 246.  Apparatus including transmission between a slidable poise and other structure interconnecting them for actuation of one by the other.

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35,for a computing table driven by poise movement.
213+,for a poise actuated in response to beam unbalance.
  
[List of Patents for class 177 subclass 250]    250Counterweight retention:
 This subclass is indented under subclass 246.  Apparatus with means to retain a counterweight in set position with respect to the beam.

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154+,for means holding a load driven element against motion.
  
[List of Patents for class 177 subclass 251]    251Adjustable load-arm connection:
 This subclass is indented under subclass 246.  Apparatus wherein the distance along the beam between the fulcrum and the load connection may be changed.

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172,for a beam having adjusting preset means for the load arm length.
236,for a counterweight type device that balances itself by shifting the fulcrum in response to load.
  
[List of Patents for class 177 subclass 252]    252Plural counterweights:
 This subclass is indented under subclass 246.  Apparatus in which more than one counterweight may be used to balance the load.

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27+,for a computing type weigher or using plural counterweights.
158,for plural counterweights on separately pivoted beams having individual beam latches.
171,for a preset beam type weigher.
247,for coarse and fine sliders.
  
[List of Patents for class 177 subclass 253]    253LOAD HOLDER:
 This subclass is indented under the class definition.  Device that sustains the load.

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60+,for a load holder with material flow control means.
151+,for a load holder having both a weighing and nonweighing support.
154+,for means for holding a load holder against motion.
160,for a load holder comprising a sack support.
161+,for a guide positioning a load on a load holder.
189,for a load holder with shock absorbing means.
  
[List of Patents for class 177 subclass 254]    254Fluid transmission:
 This subclass is indented under subclass 253.  Apparatus wherein the load sustaining means includes fluid transmission structure.

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208+,for a fluid transmission connected with a pressure gauge.

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60Power Plants,   subclasses 325+ for a fluid transmission, per se.
  
[List of Patents for class 177 subclass 255]    255Sway or tilt prevention:
 This subclass is indented under subclass 253.  Apparatus limiting horizontal or tilting motion of the load holder.

SEE OR SEARCH THIS CLASS, SUBCLASS:

198,for a check link structure in an equal arm type weigher.
231,for a load holder steadying structure combined with a casing mounted spring.
  
[List of Patents for class 177 subclass 256]    256Pivotally interconnected transmission levers:
 This subclass is indented under subclass 253.  Apparatus including separate levers pivotally interconnected to transmit force to each other or to a separate transmission element.
  
[List of Patents for class 177 subclass 257]    257Integrated force delivered by lever extension from interconnection:
 This subclass is indented under subclass 256.  Apparatus wherein an extension for a plurality of load holder carrying levers beyond their interconnection serves to deliver a single combined force from the load.
  
[List of Patents for class 177 subclass 258]    258Separate lever loaded by load-holder levers:
 This subclass is indented under subclass 256.  Apparatus wherein two load holder carrying levers load a separate force delivering lever.
  
[List of Patents for class 177 subclass 259]    259With additional serially connected lever:
 This subclass is indented under subclass 258.  Apparatus wherein the separate force delivering lever applies the force to an additional lever.
  
[List of Patents for class 177 subclass 260]    260Adjusting means:
 This subclass is indented under subclass 253.  Apparatus including means for adjusting a connection within transmission or between the load holder and the transmission.

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175+,for a presetting adjustment of a transmission that prepares the weigher for a load evaluation operation.
251,for a load evaluating adjustment of the load arm connection.
  
[List of Patents for class 177 subclass 261]    261Movably mounted pivot:
 This subclass is indented under subclass 253.  Apparatus wherein a lever bearing is so mounted that it provides for movement of the bearing additional to its rotation.

SEE OR SEARCH CLASS:

384Bearings,   subclass 2 for a beam or lever bearing, per se.
  
[List of Patents for class 177 subclass 262]    262Scale pan:
 This subclass is indented under subclass 253.  Subject matter comprising a load holder for a portable or small counter type scale.
  
[List of Patents for class 177 subclass 263]    263Suspended:
 This subclass is indented under subclass 262.  Subject matter relating to means to suspend the load holder.
  
[List of Patents for class 177 subclass 264]    264MISCELLANEOUS:
 This subclass is indented under the class definition.  Subject matter not otherwise classifiable.
  

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