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 [Search a list of Patent Appplications for class  68]   CLASS 68,TEXTILES: FLUID TREATING APPARATUS
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SECTION I - CLASS DEFINITION

This class is the class of machines, implements and accessories for fluid treatment of textile fabrics, textile fibers, and pulp as for the purpose of carbonizing, bleaching, dyeing, moistening, mercerizing or mordanting the same or for the removal of dirt, grease, soil, and other like substances from them by the use of solvents, saponifiers or emulsifiers, unless specifically provided for elsewhere.

The machines of this class have been divided into the following types:

Gas, steam, or mist treating. These are machines for subjecting a textile to a fluid in the form of a gas, steam, or mist.

Scrubbing. These are machines for effecting treatment of textiles, while saturated with a liquid, by reason of a sliding action taking place between the textiles and a contacting element, during which action the textiles may be kneaded or brushed. Scrubbing may be effected by the use of a pair of cooperating rolls if they rotate at different peripheral velocities or rotate in the same direction. Generally, scrubbers have a squeezing effect which is incidental to the scrubbing action.

Squeezing. These are machines for effecting treatment of textiles, while saturated with a liquid, by reason of application and release of pressure on the textiles.

Impulsing. These are machines for effecting treatment of textiles, while immersed in a liquid, by causing an intermittently movable element to impart repeated impulses to portions of the textiles as distinguished from the entire mass, such that the textile portions will travel a distance independently of the moving element.

Dragging. These are machines for effecting treatment of discrete portions of the entire mass of textiles by causing them to be engaged by and dragged around the tub with a moving element, without the textile portions being clamped to the element, while the textiles are submerged in a liquid. Generally, the moving element is a pin or comprises fingers or narrow blades. Where the entire mass of textiles is moved within a tub or moved into and out of the tub in one continuous cycle, as by rakes or conveyors moving the entire mass, the patents are classified in the liquid flow subclasses.

Tumbling. These are machines for effecting treatment of textiles by causing them to be tumbled about in a drum or cage which is mounted on a horizontal or inclined axis, said textiles being submerged in a liquid during at least a portion of the revolution of the drum or cage and being free to move in the cage. The drum or cage must make at least a 360° revolution, and may or may not have vanes, buckets, or the like to cause a circulation of liquid within the tumbler and may or may not have vanes to cause a rubbing action within the tumbler.

Liquid flowing. These are machines for effecting treatment of textiles by reason of the relative motion of a liquid and the textiles as by the forcing of a liquid by pumps, by centrifuging or the like through the textiles, or by the shifting bodily of the entire mass of textiles through the liquid with free access of the liquid thereto in contradistinction to moving discrete portions of the textiles, or by the agitation of the entire mass of both the liquid and the textiles submerged in the liquid.

Liquid applying. These are machines for treating textiles with liquid in which the textiles are subjected to an application of liquid other than by being submerged in the liquid or by being subjected to a vapor, spray, or mist.

NOTES

(1) PROCESSES:

Where both process and apparatus (for Class 68) for its practice are claimed, the patent is classified in the class appropriate to the process claimed and is cross-referenced to this class for the apparatus. (Note: Where the Search notes below are to processes, this is noted by a parenthentical insert at the end of the note. Otherwise, the Search note is to Apparatus.)

SECTION II - REFERENCES TO OTHER CLASSES

SEE OR SEARCH CLASS:

8Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers,   see note (1).
8Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers,   which is the generic class for processes of bleaching and dyeing materials of any kind, fluid treatment and chemical modification of textiles, fibers, hides, skins, and other animal tissues, and see the notes thereto for related art. (Processes)
15Brushing, Scrubbing, and General Cleaning,   for apparatus for operating on materials other then textiles and fibers by means of a draft or current of air, steam, or equivalent gaseous fluid, brushing, scraping, shaking, wiping, shotting, or the use of a squeegee, both with and without use of a liquid; also for cleaning spots by means of an implement provided with an applicator; also apparatus especially designed for cleaning floor coverings and upholstery while in normal serviceable position by such means whether with or without the use of a liquid.
19Textiles: Fiber Preparation,   subclass 66 for apparatus for liquid treatment of textile fibers combined with working of the fibers.
26Textiles: Cloth Finishing,   subclasses 19+ for fluid treatment of cloth for the purpose of fulling the same, and subclasses 81, 92, and 106 for stretching combined with gaseous (e.g., steam) treatment for heating or drying.
28Textiles: Manufacturing,   appropriate subclasses for textile product fabrication combined with fluid treatment or for mechanical operations of thread finishing combined with fluid treatment.
34Drying and Gas or Vapor Contact With Solids,   for both processes and apparatus for drying, including the drying of textiles.
69Leather Manufactures,   subclass 28 for apparatus for cleaning fur.
74Machine Element or Mechanism,   appropriate subclasses for gearing for driving a part of a washing machine without claiming the element which in itself does the washing. When the element which does the washing is claimed, no matter how broadly, the patents are classified in this class (68).
101Printing,   for application of coloring material to a textile by a printing operation, and see particularly subclass 172 for multicolor printing of yarn strands. (Processes)
118Coating Apparatus,   appropriate subclasses for apparatus for coating or impregnating textile materials other than the treatments set forth in section I of the class definition of Class 68.
134Cleaning and Liquid Contact With Solids,   see note (1); this class also being the generic class cleaning apparatus and for apparatus for contacting solids with liquids for cleaning or other purposes.
134Cleaning and Liquid Contact With Solids,   which is the generic class for cleaning processes, and for processes for contacting solids with liquids and see the notes thereto for related art. (Processes)
162Paper Making and Fiber Liberation,   subclasses 233+ for apparatus for digesting fibrous material in order to liberate the individual fibers (e.g., in the production of paper pulp).
205Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,   subclasses 689+ for electrolytic treatment of organic fibrous material.
206Special Receptacle or Package,   subclass 0.5 for bluing infusion packages.
210Liquid Purification or Separation,   subclasses 348+ for filtration, especially subclasses 360.1+ for centrifugal extractors, and subclasses 513+ for gravitational separators.
211Supports: Racks,   subclasses 119.01+ for clotheslines of the type wherein isolated supports are joined by flexible strands on which clothes are hung. Other clotheslines, such as single supports with arms supporting flexible strands, and rack structures with rigid or flexible clothes supporting elements are in other appropriate subclasses of Class 211.
217Wooden Receptacles,   for containers of general utility.
220Receptacles,   for containers of general utility, this class being the generic class for receptacle structure (of whatever material made) not otherwise provided for.
223Apparel Apparatus,   subclass 23 for patents for cleaning hats.
242Winding, Tensioning, or Guiding,   subclasses 388+ for a reeling device for winding similar material.
248Supports,   subclass 27.5 for washboard supports, and appropriate subclasses for tub stands and supports.
252Compositions,   appropriate subclasses for processes of cleaning which are the mere uses of detergents, even though the material so treated is specified, and also for detergent compositions.
264Plastic and Nonmetallic Article Shaping or Treating: Processes,   for cleaning artificial silk threads combined with significant processes relating to the manufacture of said threads, see particularly subclass 165 and indented subclasses. (Processes)
294Handling: Hand and Hoist-Line Implements,   subclasses 8.5 and 23.5 for clothes tongs and clothes sticks.
366Agitating,   for patents for effecting commingling of solids and liquids, with irregular motion of the material.
383Flexible Bags,   subclasses 6+ for clothespin bags.
425Plastic Article or Earthenware Shaping or Treating: Apparatus,   subclasses 67+ for filament or film forming apparatus combined with liquid treating apparatus.
427Coating Processes,   see note (1).
427Coating Processes,   which is the generic class for processes of coating or impregnating in general. (Processes)
430Radiation Imagery Chemistry: Process, Composition, or Product Thereof,   for process and composition for fluid treatment of sheet and web products therein provided. (Processes)

SUBCLASSES

[List of Patents for class 68 subclass 1]    1WASTE RECLAIMING APPARATUS:
 This subclass is indented under the class definition.  Apparatus for cleaning and conditioning used journal box lubricating waste or the like including mechanisms for extracting or separating the used oil from the waste, purifying the used oil, cleaning the waste, reconditioning the waste and reimpregnating the waste with pure lubricating oil, and combinations thereof, not otherwise provided for.
  
[List of Patents for class 68 subclass 2]    2CARBONIZING APPARATUS:
 This subclass is indented under the class definition.  Machines for the purpose of destroying a part of the textile material to clear the same from the remainder of the textiles by utilizing a fluid, the fluid being usually an acid either in the liquid or gaseous form.
  
[List of Patents for class 68 subclass 3]    3MACHINES:
 This subclass is indented under the class definition.  Textile fluid treating machines not otherwise classifiable below.
  
[List of Patents for class 68 subclass 4]    4Convertible:
 This subclass is indented under subclass 3.  Textile fluid treating machines with some additive, removable, or displaceable part, other than the drive mechanism, and which part may or may not be replaced by another part, to alter the function of the machine.
(1) Note. The new function may be another mode of fluid textile treatment.

SEE OR SEARCH THIS CLASS, SUBCLASS:

10,and 11, for machines in which the textile treating mechanism is transferable from one vat to another.

SEE OR SEARCH CLASS:

100Presses,   subclass 103 for presses convertible to a nonpressing function, not elsewhere provided for.
  
[List of Patents for class 68 subclass 5]    5With gas, steam or mist treating:
 This subclass is indented under the class definition.  Machines of the kind utilizing fluids other than liquids, such as a gas, steam, vapor or mist, for acting directly upon the textiles.

SEE OR SEARCH THIS CLASS, SUBCLASS:

2,for carbonizing apparatus using an acid in gaseous form.
43,and 183, for the use of air to cause a turbulence of the liquid.

SEE OR SEARCH CLASS:

34Drying and Gas or Vapor Contact With Solids,   for such apparatus not limited to the purposes of Class 68.
26Textiles: Cloth Finishing,   for machines for steaming and working a fabric to shrink the same, subclass 18.5 and subclasses 81, 92, and 106, for apparatus combining steaming and stretching a running web of textile.
223Apparel Apparatus,   subclass 51 for machines for steaming formed articles of apparel, see Class.
239Fluid Sprinkling, Spraying, and Diffusing,   for hand manipulable fluid mixing and spraying devices especially subclasses 303+, 337+, 398+, and 525+.
  
[List of Patents for class 68 subclass 6]    6Static devices:
 This subclass is indented under subclass 5.  Machines or devices wherein there are no moving parts save a fluid controlling valve or pump.
  
[List of Patents for class 68 subclass 7]    7With fabric carrying cylinder:
 This subclass is indented under subclass 5.  Machines or devices wherein there are no moving parts save a fluid controlling valve or pump and wherein the device includes a cylinder about which the textile is wrapped.
  
[List of Patents for class 68 subclass 8]    8Textile on cylinder:
 This subclass is indented under subclass 5.  Machines for treating textile material with fluids other than liquids while it is wrapped on a cylinder.
(1) Note. For other wound packages, see this class, subclasses 189 and 198.
  
[List of Patents for class 68 subclass 9]    9With successive fluids and plural tubs:
 This subclass is indented under subclass 3.  Machines wherein the textile is subjected to successive actions of different fluids in different tanks.
(1) Note. For machines wherein the textile is subjected to successive immersions in the same tank see this class, subclasses 175+.
  
[List of Patents for class 68 subclass 10]    10Relatively transferable textile holder:
 This subclass is indented under subclass 9.  Machines in which a textile holder or holders may be moved relatively to a series of vats containing different liquids for progressive or selective immersion in the liquids.
  
[List of Patents for class 68 subclass 11]    11Plural tubs and relatively transferable textile worker:
 This subclass is indented under subclass 3.  Machines in which there are a plurality of vats, each adapted to contain liquid and textiles and in which there is a textile-working device such as a squeezer, impeller or drag, which is transferable from one vat to another.
  
[List of Patents for class 68 subclass 12.01]    12.01Single tub and automatic sequential operation mechanism:
 This subclass is indented under subclass 3.  Subject matter wherein the textile fluid treating machine is a single tub controlled by a device which enables sequential treatment steps to be performed without intervention by a human being.

SEE OR SEARCH THIS CLASS, SUBCLASS:

190,for means to automatically reverse a flow of liquid to effect a surging action of the liquid.

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134Cleaning and Liquid Contact With Solids,   particularly subclasses 56+ , 58, and 95.1 for a process or a means for sequential or automatic operation of several steps of fluid treatment or liquid contact with nontextile articles.
137Fluid Handling,   particularly subclasses 387 and 625 for means for operating valves in sequence to feed quantities of fluid to a container, or to operate supply or drain valves in a sequence.
192Clutches and Power-Stop Control,   subclasses 138+ for means to stop the drive of a machine with the working element in a predetermined position.
210Liquid Purification or Separation,   subclasses 101 and 222 for means for separating a liquid from a solid.
  
[List of Patents for class 68 subclass 12.02]    12.02Sequence control means responsive to a sensed condition:
 This subclass is indented under subclass 12.01.  Subject matter wherein the control device utilizes means to sense a condition or a change in condition to initiate or terminate a treatment step.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.21+,for a textile treating apparatus of the single tub and automatic sequential operation mechanism-type with a liquid level or a temperature responsive control device which regulates liquid flow.
  
[List of Patents for class 68 subclass 12.03]    12.03Temperature of the load:
 This subclass is indented under subclass 12.02.  Subject matter wherein the condition which is sensed is the degree of hotness of the material being treated.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.19+,for a temperature responsive control device which regulates liquid flow in a textile fluid treating apparatus of the single tub and automatic sequential operation mechanism-type.

SEE OR SEARCH CLASS:

374Thermal Measuring and Testing,   appropriate subclass for temperature measuring, per se.
  
[List of Patents for class 68 subclass 12.04]    12.04Weight of the load:
 This subclass is indented under subclass 12.02.  Subject matter wherein the condition which is sensed is the heaviness of the material being treated.

SEE OR SEARCH CLASS:

177Weighing Scales,   appropriate subclasses for a scale to determine the weight of an article or material.
  
[List of Patents for class 68 subclass 12.05]    12.05Liquid level:
 This subclass is indented under subclass 12.02.  Subject matter wherein the condition which is sensed is the height of the treating liquid in the tub.

SEE OR SEARCH THIS CLASS, SUBCLASS:

12.21+,for a liquid level responsive control device which regulates liquid flow.

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73Measuring and Testing,   subclasses 290+ for liquid level measuring, per se.
137Fluid Handling,   subclass 387 for liquid level control of the cycle of a nontextile cleaning machine.
  
[List of Patents for class 68 subclass 12.06]    12.06Unbalanced load:
 This subclass is indented under subclass 12.02.  Subject matter wherein the condition which is sensed is the center of gravity of the treated textile material in the tub.

SEE OR SEARCH CLASS:

73Measuring and Testing,   subclasses 66+ for an apparatus or a process for determining the amount or location of masses or forces causing unbalance in a rotatable body.
310Electrical Generator or Motor Structure,   subclass 261 for miscellaneous rotor structures including those having balancing means.
  
[List of Patents for class 68 subclass 12.07]    12.07Dyer:
 This subclass is indented under subclass 12.01.  Subject matter wherein the textile treating machine includes features peculiar to coloring the textile material.

SEE OR SEARCH CLASS:

8Bleaching and Dyeing; Fluid Treatment and Chemical Modification of Textiles and Fibers,   subclasses 400 through 696for a process of or a composition for dyeing material of any kind including specific treatment peculiarly related to dyeing, such as mordanting, color protecting, etc.
  
[List of Patents for class 68 subclass 12.08]    12.08Dry cleaner:
 This subclass is indented under subclass 12.01.  Subject matter wherein the textile treating machine includes means peculiar to cleansing textile material with a substantially nonaqueous or organic solvent (e.g., petroleum naphtha).
  
[List of Patents for class 68 subclass 12.09]    12.09With cooling means:
 This subclass is indented under subclass 12.08.  Subject matter combined with means for lowering the temperature of the textile material or the solvent being used.

SEE OR SEARCH CLASS:

62Refrigeration,   appropriate subclass for cooling means, per se.
165Heat Exchange,   appropriate subclass for a heat exchange system, per se.
  
[List of Patents for class 68 subclass 12.11]    12.11Pneumatically actuated:
 This subclass is indented under subclass 12.01.  Subject matter including means which utilizes positive or negative air pressure to activate some part of the machine.

SEE OR SEARCH CLASS:

91Motors: Expansible Chamber Type,   appropriate subclass for devices for converting energy of a pressurized fluid into work.
  
[List of Patents for class 68 subclass 12.12]    12.12Special cycle specified (e.g., prewash cycle, permanent press cycle, etc.):
 This subclass is indented under subclass 12.01.  Subject matter wherein an interval of time is specified during which a particular treatment of the material takes place.
  
[List of Patents for class 68 subclass 12.13]    12.13With treating liquid filtering or reclaiming means:
 This subclass is indented under subclass 12.01.  Subject matter combined with means for removing or neutralizing undesirable matter or contaminants in the treating fluid.

SEE OR SEARCH CLASS:

134Cleaning and Liquid Contact With Solids,   subclass 109 for an apparatus having means for separating contaminants from the treating fluids in a nontextile fluid treatment or a liquid contact apparatus.
210Liquid Purification or Separation,   subclasses 348+ for filtration, per se.
  
[List of Patents for class 68 subclass 12.14]    12.14Dewatering detail:
 This subclass is indented under subclass 12.01.  Subject matter wherein significance is attributed to a means for extracting liquid or moisture from a textile material.

SEE OR SEARCH CLASS:

34Drying and Gas or Vapor Contact With Solids,   appropriate subclasses, particularly subclasses 266+ , 312+, and 397+ for a process for drying material.
210Liquid Purification or Separation,   subclasses 348+ for filtration, per se, especially subclasses 360.1+ for gravitational separators.
  
[List of Patents for class 68 subclass 12.15]    12.15With heating means:
 This subclass is indented under subclass 12.14.  Subject matter combined with means for elevating the temperature of the textile material.

SEE OR SEARCH CLASS:

34Drying and Gas or Vapor Contact With Solids,   appropriate subclasses, particularly subclasses 266+ , 312+, and 397+ for a process for drying material.
110Furnaces,   appropriate subclass for a solid fuel burner having a feature specialized to the burning of such fuel.
126Stoves and Furnaces,   appropriate subclass for an apparatus for applying heat which does not use electrical characteristics or structure.
219Electric Heating,   appropriate subclass for a miscellaneous process or apparatus for application of electrical energy for heating.
431Combustion,   appropriate subclass for a gaseous or liquid fuel combustion apparatus.
  
[List of Patents for class 68 subclass 12.16]    12.16Motor control circuitry detail:
 This subclass is indented under subclass 12.01.  Subject matter wherein significance is attributed to a circuit arrangement or an element thereof for regulating the operation of an electric motor.

SEE OR SEARCH CLASS:

318Electricity: Motive Power Systems,   appropriate subclass for an electric motor control circuit, per se.
  
[List of Patents for class 68 subclass 12.17]    12.17Relay:
 This subclass is indented under subclass 12.16.  Subject matter wherein the circuit includes an electromagnetic relay.

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335Electricity: Magnetically Operated Switches, Magnets, and Electromagnets,   subclasses 2+ for an electromagnetic relay, per se.
361Electricity: Electrical Systems and Devices,   subclass 160 for a control circuit for a relay.
  
[List of Patents for class 68 subclass 12.18]    12.18With additive dispensing:
 This subclass is indented under subclass 12.01.  Subject matter combined with means to introduce an additive to the tub.
(1) Note. An example of an additive is a detergent, fabric conditioner or bleach which is generally added to the washing liquid.

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12.07,for a fluid treating apparatus of the single tub automatic seqential operation mechanism-type having a dyer combined with a dispenser.
13,and 17+, for another fluid treating apparatus for textiles combined with dispensing means.

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134Cleaning and Liquid Contact With Solids,   subclass 93 for a liquid contact with solid apparatus combined with solid treating agent supplying means.
137Fluid Handling,   subclass 240 for fluid handling systems combined with means to add material to the fluid and subclass 268 for a fluid handling system combined with means for holding solid material to be dissolved or entrained in the fluid.
222Dispensing,   appropriate subclasses for dispensing, per se.
  
[List of Patents for class 68 subclass 12.19]    12.19Liquid handling:
 This subclass is indented under subclass 12.01.  Subject matter including means to confine, direct or control the flow of the treating fluid.

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12.05,for the control of the sequential liquid treatment steps in a single tub in response to the height of the treating liquid in the tub.

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137Fluid Handling,   appropriate subclasses for a mere valved pipe; subclasses 59+ , 107, 302+, 312+, 427, 562, 565.36, 577+, and 596 for an overflow and drain of general utility; subclass 268 for a fluid handling system including means for holding solid material which is to be dissolved or entrained in fluid; appropriate subclass for means to valve soap to the machine; and subclass 387 for a liquid level responsive or maintaining system for controlling the operation of a washing machine.
  
[List of Patents for class 68 subclass 12.21]    12.21Level or temperature responsive:
 This subclass is indented under subclass 12.19.  Subject matter including means responsive to the height of or the hotness of the treating liquid for controlling the flow of the treating liquid.

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12.02+,for a liquid level or temperature responsive control device which initiates or terminates a textile liquid treatment step.

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137Fluid Handling,   subclass 240 for addition of separate material in an additional cleaning system, subclass 268 for the addition of nonfluid material to a flow system, subclasses 331+ for cyclic or program type actuation of valves and subclass 387 for fluid level control of a machine for treating nontextile-type material.
  
[List of Patents for class 68 subclass 12.22]    12.22With temperature modification:
 This subclass is indented under subclass 12.21.  Subject matter combined with means for elevating or lowering the temperature of the treating liquid.

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34Drying and Gas or Vapor Contact With Solids,   subclasses 245+ for an apparatus for applying electrical or radiant energy to work and subclasses 266+ for a process involving applying electrical or radiant energy to work.
110Furnaces,   appropriate subclass for a solid fuel burner having a feature specialized to the burning of such fuel.
126Stoves and Furnaces,   appropriate subclasses for a nonelectrical apparatus for applying heat.
219Electric Heating,   appropriate subclass for a miscellaneous process or apparatus for application of electrical energy for heating.
431Combustion,   appropriate subclass for a gaseous or liquid fuel combustion apparatus.
  
[List of Patents for class 68 subclass 12.23]    12.23Sequence controller detail:
 This subclass is indented under subclass 12.01.  Subject matter wherein significance is attributed to the means controlling the sequential treatment steps of the textile treating machine.

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91Motors: Expansible Chamber Type,   particularly subclasses 341+ for independently operated timer, delay, pattern or cyclic control.
  
[List of Patents for class 68 subclass 12.24]    12.24Clutch detail or transmission detail:
 This subclass is indented under subclass 12.01.  Subject matter including means to selectively connect the driving and the driven parts of the machine (i.e., clutch) or an assembly of mechanical power transmitting elements, (i.e., tranmission) and significance is attributed to the clutch or transmission.

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74Machine Element or Mechanism,   appropriate subclasses for power transmitting elements, per se.
192Clutches and Power-Stop Control,   subclasses 30+ for a clutch, per se.
  
[List of Patents for class 68 subclass 12.25]    12.25With delay detail:
 This subclass is indented under subclass 12.24.  Subject matter wherein particular significance is attributed to a means for temporarily stopping, detaining or hindering some part of the clutch or transmission.
  
[List of Patents for class 68 subclass 12.26]    12.26Door safety latch detail:
 This subclass is indented under subclass 12.01.  Subject matter wherein significance is attributed to a means for securing the door of the machine in a closed position during liquid treatment.

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70Locks,   appropriate subclasses for a lock, per se.
220Receptacles,   subclasses 315+ for a closure of general utility combined with a fastening device.
292Closure Fasteners,   appropriate subclasses for a fastener, per se.
  
[List of Patents for class 68 subclass 12.27]    12.27Indicator or sensor detail:
 This subclass is indented under subclass 12.01.  Subject matter wherein significance is attributed to either (a) a means for mechanically or electrically giving a humanly preceptible signal or (b) a means which responds to a physical stimulus and transmits a resulting impulse.

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73Measuring and Testing,   subclass 866.5 fora sensor, per se.
116Signals and Indicators,   appropriate subclasses for nonelectrical means for giving a humanly preceptible signal, per se.
340Communications: Electrical,   appropriate subclasses for electric means for giving a humanly perceptible indication or signal.
  
[List of Patents for class 68 subclass 13]    13Combined:
 This subclass is indented under subclass 3.  Machines of this class combined with other means in which or by which similar or other functions may be performed.

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4,for convertible washing machines.
27,for multiple washing machines.
  
[List of Patents for class 68 subclass 14]    14With scrub-board:
 This subclass is indented under subclass 13.  Machines with scrub boards wherein the scrub board may be utilized independently of the remainder of the machine.

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28+,for machines wherein textiles are subjected to a scrubbing action simultaneously with some other cleansing or like treatment.
  
[List of Patents for class 68 subclass 15]    15With tank heater:
 This subclass is indented under subclass 13.  Machines combined with means for applying heat to the tub to heat the liquid therein or for applying heat to liquid within the tub.

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147+,for machines provided with heating means in a fluid circulatory system, particularly subclasses 191+ where the flow of liquid or pumping action is induced by heat.
207,for devices for preheating the fluid while feeding the same to a washing machine.

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122Liquid Heaters and Vaporizers,   for a closed or pressurized liquid heater or vaporizer having other than significant structure for fluid treatment of a textile.
126Stoves and Furnaces,   for a water heater or steam generator of an open or unpressurized type, or may be a closed or pressurized type if it is part of the stove or furnace structure having other than significant structure for fluid treatment of a textile; and subclasses 344 through 363.1for a liquid heater that may include a kettle, a steam generator, stove pipe for use with a stove, and a domestic water heater or boiler (e.g., kitchen boiler, range boiler, etc.) for use with a stove or furnace.
  
[List of Patents for class 68 subclass 16]    16Tumbler drum:
 This subclass is indented under subclass 15.  Machines of the tumbler type combined with means for applying heat to the tub to heat the liquid therein or for applying heat to liquid within the tub.
  
[List of Patents for class 68 subclass 17]    17With soap supply:
 This subclass is indented under subclass 13.  Machines combined with means to supply soap or a concentrated soap solution to the tub.

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100Presses,   subclasses 71+ for presses not elsewhere provided for, having means to add materials to each other.
134Cleaning and Liquid Contact With Solids,   subclass 93 for apparatus there provided for combined with solid treating agent supplying means.
137Fluid Handling,