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 [Search a list of Patent Appplications for class 278]   CLASS 278,LAND VEHICLES: ANIMAL DRAFT APPLIANCES
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SECTION I - CLASS DEFINITION

This class includes that portion of land vehicles by means of which the pull of draft animals is utilized to move the vehicle over the ground.

SECTION II - LINES WITH OTHER CLASSES AND WITHIN THIS CLASS

This class is subordinate to Class 280, Land Vehicles, and is distinguished therefrom, as indicated in the class definition above.

SUBCLASSES

[List of Patents for class 278 subclass 1]    1MISCELLANEOUS:
 This subclass is indented under the class definition.  Devices and not classified in any of the other subclasses of this class.
  
[List of Patents for class 278 subclass 2]    2LOAD STARTERS:
 This subclass is indented under the class definition.  Subject matter including devices auxiliary to the conventional means for drawing a vehicle which can be used to start a load by giving increased mechanical advantage to the draft animals.

SEE OR SEARCH CLASS:

280Land Vehicles,   subclass 151 for load starters operated by an auxiliary force
  
[List of Patents for class 278 subclass 2.1]    2.1STREETCAR:
 This subclass is indented under the class definition.  Subject matter including means for attaching draft animals to streetcars.
  
     DRAFT EQUALIZERS:
 This subclass is indented under the class definition.  Subject matter wherein the group of subclasses indented hereunder comprise means for effecting and utilizing the pull of two or more draft animals, so that the load will be proportioned to each animal in accordance with unit strength or varying conditions of pull; also means, where the line of draft relative to the load is offset, to overcome and prevent so-called "side draft".
(1) Note. Conventional doubletrees involving only structural features and attaching means in the line of draft will be found in this class, subclasses 90+.
  
[List of Patents for class 278 subclass 3]    3Horse longitudinally aligned:
 This subclass is indented under the unnumbered subclass, Draft Equalizers.  Subject matter wherein the draft animals are arranged in a longitudinal aligned relation, there being any number of animals abreast.
  
[List of Patents for class 278 subclass 4]    4Two abreast:
 This subclass is indented under subclass 3.  Subject matter wherein the draft animals are arranged in files of two abreast.
  
[List of Patents for class 278 subclass 5]    5Horse abreast:
 This subclass is indented under the unnumbered subclass, Draft Equalizers.  Subject matter wherein all the draft animals are arranged in abreast relation.
  
[List of Patents for class 278 subclass 6]    6Five-horse type:
 This subclass is indented under subclass 5.  Subject matter wherein the number of animals is limited to five.
  
[List of Patents for class 278 subclass 7]    7With pole or poles:
 This subclass is indented under subclass 6.  Subject matter wherein, in the type indicated, a pole or poles is employed.
  
[List of Patents for class 278 subclass 8]    8Four-horse type:
 This subclass is indented under subclass 5.  Subject matter wherein the number of animals is limited to four.
  
[List of Patents for class 278 subclass 9]    9With pole or poles:
 This subclass is indented under subclass 8.  Subject matter wherein, in the type indicated, a pole or poles is employed.
  
[List of Patents for class 278 subclass 10]    10Offset pole:
 This subclass is indented under subclass 9.  Subject matter wherein the pole is offset relative to the team, i.e., three on one side and one on the other side of the pole.
  
[List of Patents for class 278 subclass 11]    11Three-against-one pull:
 This subclass is indented under subclass 10.  Subject matter wherein three of the draft animals are arranged to pull against one.
  
[List of Patents for class 278 subclass 12]    12Two-against-two pull:
 This subclass is indented under subclass 10.  Subject matter wherein the draft animals are arranged in pairs, each pair to pull against the other.
  
[List of Patents for class 278 subclass 13]    13Lateral evener connection:
 This subclass is indented under subclass 12.  Subject matter wherein the draft connection between the draft equalizer and load is lateral of the pole.
  
[List of Patents for class 278 subclass 14]    14Three-horse type:
 This subclass is indented under subclass 5.  Subject matter wherein the number of draft animals is limited to three.
  
[List of Patents for class 278 subclass 15]    15With pole or poles:
 This subclass is indented under subclass 14.  Subject matter wherein, in the type indicated, a pole or poles is employed.
  
[List of Patents for class 278 subclass 16]    16With intermediate evener:
 This subclass is indented under subclass 15.  Subject matter wherein an intermediate evener is used to connect at least two of the draft animals to a main evener or its equivalent.
  
[List of Patents for class 278 subclass 17]    17Offset:
 This subclass is indented under subclass 16.  Subject matter wherein the intermediate evener has an offset position relative to the pole.
  
[List of Patents for class 278 subclass 18]    18Two-horse type:
 This subclass is indented under the unnumbered subclass, Draft Equalizers.  Subject matter wherein the number of draft animals is limited to two.
  
[List of Patents for class 278 subclass 19]    19Leverage adjustment:
 This subclass is indented under subclass 18.  Subject matter wherein there is a possible adjustment of position of the singletrees relative to the evener or of the evener relative to the load to proportion the load according to the strength or position of each of the draft animals.
  
[List of Patents for class 278 subclass 20]    20Automatic:
 This subclass is indented under subclass 19.  Subject matter wherein the adjustment of position is effected automatically.
  
[List of Patents for class 278 subclass 21]    21HORSE DETACHERS:
 This subclass is indented under the class definition.  Subject matter comprising devices involving no special harness modification for quickly detaching draft animals from the vehicle; usually the driver can operate this disconnection from a position on the vehicle, as in case of the animal or animals running away.

SEE OR SEARCH CLASS:

54Harness for Working Animal,   subclass 69 , for devices of like purpose involving harness modification or special arrangement of harness, with special vehicle attachments to cooperate therewith.
  
[List of Patents for class 278 subclass 22]    22Automatic:
 This subclass is indented under subclass 21.  Subject matter wherein the detachment is effected automatically.
  
[List of Patents for class 278 subclass 23]    23Combined brake:
 This subclass is indented under subclass 21.  Subject matter wherein upon operation of the detaching device, brakes are operated to stop the movement of the vehicle.
  
[List of Patents for class 278 subclass 24]    24Traces from singletree:
 This subclass is indented under subclass 21.  Subject matter including means for simultaneously detaching the traces from the singletree.
(1) Note. The singletree may be an element of a doubletree.
  
[List of Patents for class 278 subclass 25]    25Traces positively moved:
 This subclass is indented under subclass 24.  Subject matter wherein the trace is positively moved out of its engaging position with the singletree.
  
[List of Patents for class 278 subclass 26]    26Movable trace-eye-engaging element:
 This subclass is indented under subclass 24.  Subject matter wherein a trace-eye-engaging element is moved to a position to release the trace.
  
[List of Patents for class 278 subclass 27]    27Pivoted:
 This subclass is indented under subclass 26.  Subject matter wherein the trace-eye-engaging element is pivoted.
  
[List of Patents for class 278 subclass 28]    28Sliding pin or rod:
 This subclass is indented under subclass 26.  Subject matter wherein the trace-eye-engaging element is a sliding pin or rod.
  
[List of Patents for class 278 subclass 29]    29Thills or pole from vehicle:
 This subclass is indented under subclass 21.  Subject matter wherein the thills or pole are released from their attached relation to the vehicle.
  
[List of Patents for class 278 subclass 30]    30Retracting axle-clip bolt:
 This subclass is indented under subclass 29.  Subject matter wherein the usual axle-clip bolt is retracted to release the thills or pole.
  
[List of Patents for class 278 subclass 31]    31Doubletree from pole:
 This subclass is indented under subclass 21.  Subject matter wherein the doubletree is released from the pole.
  
[List of Patents for class 278 subclass 32]    32Singletree from thill or evener:
 This subclass is indented under subclass 21.  Subject matter wherein the singletree is released from the thills or evener.
  
[List of Patents for class 278 subclass 33]    33POLE AND THILLS:
 This subclass is indented under the class definition.  Subject matter including patents for improvements relating to the pole or thills of a vehicle.
  
[List of Patents for class 278 subclass 34]    34Plural:
 This subclass is indented under subclass 33.  Subject matter wherein the poles or thills are duplicated in the same vehicle.
  
[List of Patents for class 278 subclass 35]    35Special purpose attachment:
 This subclass is indented under subclass 33.  Subject matter including devices adapted for attachment to poles or thills for various special purposes.
  
[List of Patents for class 278 subclass 36]    36Poles:
 This subclass is indented under subclass 33.  Subject matter relating to poles only.
  
[List of Patents for class 278 subclass 37]    37Agricultural implement type:
 This subclass is indented under subclass 36.  Subject matter including the type used with agricultural implements.
(1) Note. Where the function of the devices is to equalize draft, they will be found in appropriate subclasses under "Draft Equalizers" in this class.
  
[List of Patents for class 278 subclass 38]    38The pole body:
 This subclass is indented under subclass 36.  Subject matter including patents relating to the body or pole proper.
  
[List of Patents for class 278 subclass 39]    39Selective positioned:
 This subclass is indented under subclass 36.  Subject matter wherein the pole body is capable of attachment to the rest of the pole in a plurality of positions.
  
[List of Patents for class 278 subclass 40]    40Slip tongue:
 This subclass is indented under subclass 36.  Subject matter wherein the pole is socketed to a part of the vehicle and can be slipped into or out of such position.
  
[List of Patents for class 278 subclass 41]    41Axle attached:
 This subclass is indented under subclass 36.  Subject matter wherein the pole is attached to the axle of the vehicle.
  
[List of Patents for class 278 subclass 42]    42Width adjustment:
 This subclass is indented under subclass 41.  Subject matter wherein the pole has an adjustable rear-end portion to vary its width to accommodate it to varyingly spaced axle clips or equivalent axle fastenings.
  
[List of Patents for class 278 subclass 43]    43Axle hounds attached:
 This subclass is indented under subclass 36.  Subject matter wherein the pole is attached to the vehicle through axle hounds.
  
[List of Patents for class 278 subclass 44]    44Thills:
 This subclass is indented under subclass 33.  Subject matter relating to thills only.
  
[List of Patents for class 278 subclass 45]    45Two-wheeled vehicles:
 This subclass is indented under subclass 44.  Subject matter adapted for use with two-wheeled vehicles.
  
[List of Patents for class 278 subclass 46]    46Offset draft:
 This subclass is indented under subclass 44.  Subject matter wherein thills are so constructed or positioned relative to a vehicle that the draft animal travels to one side of the center line of draft.
  
[List of Patents for class 278 subclass 47]    47Selective direct:
 This subclass is indented under subclass 46.  Subject matter wherein the thills may be selectively positioned to the vehicle, so that the draft animal travels either in the line of draft or to one side thereof.
  
[List of Patents for class 278 subclass 48]    48Sectional:
 This subclass is indented under subclass 44.  Subject matter wherein the thills are composed of easily disconnected sections.
  
[List of Patents for class 278 subclass 49]    49Joints and braces:
 This subclass is indented under subclass 44.  Subject matter relating to the joints or braces of thills.
  
[List of Patents for class 278 subclass 50]    50Tips:
 This subclass is indented under subclass 33.  Subject matter including devices for tipping the ends of poles or thills.
  
[List of Patents for class 278 subclass 51]    51Safety neck-yoke retainers:
 This subclass is indented under subclass 50.  Subject matter wherein pole tips are provided with means for preventing accidental removal of conventional neck-yoke centers from the ends of poles.
(1) Note. Devices for a similar purpose where the neck-yoke center is modified will be found in this class, subclasses 51 and 53.
  
[List of Patents for class 278 subclass 52]    52THILL COUPLINGS:
 This subclass is indented under the class definition.  Subject matter including devices for attaching thills to a vehicle; usually such connection is made to the axle; one of the elements of the coupling is formed on the thills.
  
[List of Patents for class 278 subclass 53]    53Resilient:
 This subclass is indented under subclass 52.  Subject matter wherein the coupling resiliently connects the thills to the vehicle.
  
[List of Patents for class 278 subclass 54]    54Safety attachment:
 This subclass is indented under subclass 52.  Subject matter including devices adapted to prevent separation of the thills and vehicle in case of disconnection of the coupling.
  
[List of Patents for class 278 subclass 55]    55Plural:
 This subclass is indented under subclass 52.  Subject matter wherein the thills as a whole can be disconnected from the vehicle by any one of two or more couplings.
  
[List of Patents for class 278 subclass 56]    56Special position release:
 This subclass is indented under subclass 52.  Subject matter wherein the coupling can be disconnected by movement of the thills to a special position other than the one in which the thills are normally placed.
  
[List of Patents for class 278 subclass 57]    57L-head type:
 This subclass is indented under subclass 56.  Subject matter wherein one of the elements of the coupling is L-shaped.
  
[List of Patents for class 278 subclass 58]    58T-head type:
 This subclass is indented under subclass 56.  Subject matter wherein one of the elements of the coupling is T-shaped.
  
[List of Patents for class 278 subclass 59]    59D-head type:
 This subclass is indented under subclass 56.  Subject matter wherein one of the elements of the coupling is D-shaped.
  
[List of Patents for class 278 subclass 60]    60Removable transverse pin or bolt:
 This subclass is indented under subclass 52.  Subject matter wherein a transverse pin or bolt passes through eye elements on the thills and vehicle.
  
[List of Patents for class 278 subclass 61]    61Antirattling:
 This subclass is indented under subclass 60.  Subject matter including devices for attachment to conventional couplings of the type indicated to prevent rattling of the couplings.
  
[List of Patents for class 278 subclass 62]    62With special pin retainers:
 This subclass is indented under subclass 61.  Subject matter wherein the antirattling device is formed as a part of means for securing the pin or bolt in place.
  
[List of Patents for class 278 subclass 63]    63Resilient:
 This subclass is indented under subclass 61.  Subject matter wherein the antirattling device is resilient.
  
[List of Patents for class 278 subclass 64]    64Adjustable:
 This subclass is indented under subclass 63.  Subject matter wherein the antirattling device is provided with means to adjust the resilient element.
  
[List of Patents for class 278 subclass 65]    65Special pin retainers:
 This subclass is indented under subclass 60.  Subject matter including special means for holding the pin or bolt in place other than by conventional nuts, cotter pins, etc.
  
[List of Patents for class 278 subclass 66]    66Opposed lug engaging or carrying jaws:
 This subclass is indented under subclass 52.  Subject matter wherein one of the elements of the coupling is a member having opposed lug-engaging or -carrying jaws.
  
[List of Patents for class 278 subclass 67]    67L-head type:
 This subclass is indented under subclass 52.  Subject matter wherein one of the elements of the coupling is L-shaped.
  
[List of Patents for class 278 subclass 68]    68T-head type:
 This subclass is indented under subclass 52.  Subject matter wherein one of the elements of the coupling is T-shaped.
  
[List of Patents for class 278 subclass 69]    69Cooperating hooks:
 This subclass is indented under subclass 68.  Subject matter wherein the branches of the "T" are engaged by hooks.
  
[List of Patents for class 278 subclass 70]    70Retainers:
 This subclass is indented under subclass 69.  Subject matter wherein retaining means is provided to maintain the "T" element in the hooks.
  
[List of Patents for class 278 subclass 71]    71Spring:
 This subclass is indented under subclass 70.  Subject matter wherein such retaining means is in the form of a spring.
  
[List of Patents for class 278 subclass 72]    72D-head type:
 This subclass is indented under subclass 52.  Subject matter wherein one of the elements of the coupling is D-shaped.
  
[List of Patents for class 278 subclass 73]    73Cooperating hook:
 This subclass is indented under subclass 72.  Subject matter wherein the transverse member of the "D" is engaged by a hook.
  
[List of Patents for class 278 subclass 74]    74Retainers:
 This subclass is indented under subclass 73.  Subject matter wherein retaining means is provided to maintain the "D" element in the hook.
  
[List of Patents for class 278 subclass 75]    75Pivoted:
 This subclass is indented under subclass 74.  Subject matter wherein the retaining means is a pivoted element.
  
[List of Patents for class 278 subclass 76]    76Spring:
 This subclass is indented under subclass 74.  Subject matter wherein the retaining member is a spring.
  
[List of Patents for class 278 subclass 77]    77Plural part eye:
 This subclass is indented under subclass 72.  Subject matter wherein one of the elements of the coupling is a separable eye adapted to clamp the transverse member of the "D".
  
[List of Patents for class 278 subclass 78]    78Pivoted jaws:
 This subclass is indented under subclass 77.  Subject matter wherein the eye is formed by jaws pivoted together.
  
[List of Patents for class 278 subclass 79]    79Grapple type:
 This subclass is indented under subclass 78.  Subject matter wherein the pivoted jaws resemble a grapple.
  
[List of Patents for class 278 subclass 80]    80Ball and socket:
 This subclass is indented under subclass 52.  Subject matter wherein one of the coupling elements is a ball and the other is a socket to receive the ball.
  
[List of Patents for class 278 subclass 81]    81THILL SUPPORTS:
 This subclass is indented under the class definition.  Subject matter including devices for supporting the thills of the vehicle in any position so that the ends are held above the ground.
  
[List of Patents for class 278 subclass 82]    82Plural position:
 This subclass is indented under subclass 81.  Subject matter including means capable of supporting the thills in a plurality of positions.
  
[List of Patents for class 278 subclass 83]    83Spring latches:
 This subclass is indented under subclass 81.  Subject matter wherein the support is a latch moved to engaging position by a spring.
  
[List of Patents for class 278 subclass 84]    84Spring:
 This subclass is indented under subclass 81.  Subject matter wherein the support is a spring which resiliently supports the thills.
  
[List of Patents for class 278 subclass 85]    85Separate props:
 This subclass is indented under subclass 81.  Subject matter including devices separate from the vehicle or thills adapted to engage the thills and some other part of the vehicle to prop the thills in raised position.
  
[List of Patents for class 278 subclass 86]    86POLE SUPPORTS:
 This subclass is indented under the class definition.  Subject matter including devices for supporting the pole of the vehicle in any position so that the end of the pole does not contact with the ground or the animals are relieved of its weight.
  
[List of Patents for class 278 subclass 87]    87Ground-engaging props:
 This subclass is indented under subclass 86.  Subject matter including means for engaging the pole and the ground to prop the pole.
  
[List of Patents for class 278 subclass 88]    88Spring:
 This subclass is indented under subclass 86.  Subject matter wherein the support is a spring which resiliently supports the pole.
  
[List of Patents for class 278 subclass 89]    89Coil:
 This subclass is indented under subclass 88.  Subject matter wherein the support is a coil spring.
  
[List of Patents for class 278 subclass 90]    90WHIFFLETREES:
 This subclass is indented under the class definition.  Subject matter including patents relating to whiffletrees and to their connections to the pole, thills, or forward part of a vehicle, unless the invention is such as falls under the definition of draft equalizers.
  
[List of Patents for class 278 subclass 91]    91Resilient:
 This subclass is indented under subclass 90.  Subject matter wherein the whiffletree is resilient.
  
[List of Patents for class 278 subclass 92]    92Metallic:
 This subclass is indented under subclass 90.  Subject matter wherein the whiffletree is made of metal.
  
[List of Patents for class 278 subclass 93]    93Trussed:
 This subclass is indented under subclass 92.  Subject matter wherein the whiffletree is of metal and is provided with a truss brace.
  
[List of Patents for class 278 subclass 94]    94Trussed:
 This subclass is indented under subclass 90.  Subject matter wherein the whiffle tree is provided with a truss brace.
  
[List of Patents for class 278 subclass 95]    95Connections:
 This subclass is indented under subclass 90.  Subject matter including the connecting means between the elements of a whiffletree or between the whiffletree and pole, thill, or forward part of a vehicle.
  
[List of Patents for class 278 subclass 96]    96Link or clevis:
 This subclass is indented under subclass 95.  Subject matter wherein the connecting means is in the form of a link or clevis.
  
[List of Patents for class 278 subclass 96.1]    96.1Resilient:
 This subclass is indented under subclass 96.  Subject matter wherein the link or clevis is supported resiliently or consists of resiliently connected parts.
  
[List of Patents for class 278 subclass 96.2]    96.2Adjustable draft line:
 This subclass is indented under subclass 96.  Subject matter wherein the link or clevis is so mounted or constructed as to permit change in the line of draft relative to the drawn vehicle.
  
[List of Patents for class 278 subclass 96.3]    96.3Horizontally:
 This subclass is indented under subclass 96.2.  Subject matter wherein the adjustment is permitted in a horizontal plane.
  
[List of Patents for class 278 subclass 97]    97Resilient:
 This subclass is indented under subclass 95.  Subject matter wherein the connecting means is resilient.
  
[List of Patents for class 278 subclass 98]    98To pole or thills:
 This subclass is indented under subclass 97.  Subject matter wherein the connection of the whiffletree to the pole or thills is resilient.
  
[List of Patents for class 278 subclass 99]    99To pole or thills:
 This subclass is indented under subclass 95.  Subject matter including connections of the whiffletree to the pole or thills.
  
[List of Patents for class 278 subclass 100]    100Pivot bolt:
 This subclass is indented under subclass 99.  Subject matter wherein the connection is a pivot bolt.
  
[List of Patents for class 278 subclass 101]    101Offset pivot:
 This subclass is indented under subclass 100.  Subject matter wherein the pivot-bolt is offset relative to an element of the whiffletree.
  
[List of Patents for class 278 subclass 102]    102Trace and whiffletree connections:
 This subclass is indented under subclass 90.  Subject matter including devices for connecting whiffletrees to harness traces.

SEE OR SEARCH THIS CLASS, SUBCLASS:

24+,for trace detachers.
  
[List of Patents for class 278 subclass 103]    103Resilient:
 This subclass is indented under subclass 102.  Subject matter wherein the connection is resilient.
  
[List of Patents for class 278 subclass 104]    104Clamp:
 This subclass is indented under subclass 102.  Subject matter including means provided to clamp the end of the trace.
  
[List of Patents for class 278 subclass 105]    105Trace-eye-engaging head or end:
 This subclass is indented under subclass 102.  Subject matter wherein the whiffletree is provided with a head or end engaging in an eye formed at the end of the trace.
  
[List of Patents for class 278 subclass 106]    106Loop retainers:
 This subclass is indented under subclass 105.  Subject matter wherein the whiffletree is also provided with retaining means in the form of a loop.
  
[List of Patents for class 278 subclass 107]    107Hook retainers:
 This subclass is indented under subclass 105.  Subject matter wherein the whiffletree is provided with retaining means in the form of a hook.
  
[List of Patents for class 278 subclass 108]    108Spring detent retainers:
 This subclass is indented under subclass 105.  Subject matter wherein the whiffletree is provided with a spring-detent retaining means.
  
[List of Patents for class 278 subclass 109]    109Pivoted button or lug retainers:
 This subclass is indented under subclass 105.  Subject matter wherein the whiffletree is provided with a pivoted button or lug as retaining means.
  
[List of Patents for class 278 subclass 110]    110Rotatable button retainers:
 This subclass is indented under subclass 105.  Subject matter wherein the whiffle tree is provided with a rotatable button as retaining means.
  
[List of Patents for class 278 subclass 111]    111Hooks:
 This subclass is indented under subclass 102.  Subject matter wherein the connecting means is in the form of a hook.
  
[List of Patents for class 278 subclass 112]    112Trace retaining:
 This subclass is indented under subclass 111.  Subject matter wherein the hook is provided with trace-retaining means.
  
[List of Patents for class 278 subclass 113]    113Movable keeper:
 This subclass is indented under subclass 112.  Subject matter wherein the retaining means is a movable keeper.
  
[List of Patents for class 278 subclass 114]    114Snap hook type:
 This subclass is indented under subclass 113.  Subject matter wherein the hook is of the snap hook type.
  
[List of Patents for class 278 subclass 115]    115Special position release:
 This subclass is indented under subclass 112.  Subject matter wherein the hook is movable to a special position to permit release of the trace.
  
[List of Patents for class 278 subclass 116]    116Opposed lapping hooks:
 This subclass is indented under subclass 115.  Subject matter consisting of two overlapping opposed hooks.
  
[List of Patents for class 278 subclass 117]    117Whiffletree fastenings:
 This subclass is indented under subclass 111.  Subject matter means for fastening the trace-connecting means to the whiffletrees.
  
[List of Patents for class 278 subclass 118]    118TRACE AND THILL OR POLE CONNECTION:
 This subclass is indented under the class definition.  Subject matter including means for connecting the trace directly to the pole or thills.
  
[List of Patents for class 278 subclass 119]    119NECK POLES:
 This subclass is indented under the class definition.  Subject matter including patents relating to neck yokes.
  
[List of Patents for class 278 subclass 120]    120End construction:
 This subclass is indented under subclass 119.  Subject matter including patents relating to the end construction of neck yokes.
  
[List of Patents for class 278 subclass 121]    121Pole couplings:
 This subclass is indented under subclass 119.  Subject matter including that part of the neck yoke which is connected to the pole.
  
[List of Patents for class 278 subclass 122]    122Modified pole and yoke (center):
 This subclass is indented under subclass 121.  Subject matter including patents showing cooperative modification of both the pole and neck yoke.
  
[List of Patents for class 278 subclass 123]    123Permanently attached:
 This subclass is indented under subclass 122.  Subject matter wherein the neck yoke is permanently attached to the pole.
  
[List of Patents for class 278 subclass 124]    124With safety devices:
 This subclass is indented under subclass 121.  Subject matter wherein the neck yoke is provided with means to prevent accidental detachment of the neck yoke from the pole.

SEE OR SEARCH THIS CLASS, SUBCLASS:

51,for patents for a similar purpose where the neck yoke is conventional and the structure is a part of the pole.
  
[List of Patents for class 278 subclass 125]    125Leather eye or ring:
 This subclass is indented under subclass 121.  Subject matter wherein the pole coupling is leather eye or ring secured to the neck yoke.
  
[List of Patents for class 278 subclass 126]    126HOLDBACKS:
 This subclass is indented under the class definition.  Subject matter including means formed as a part of the thills or as an attachment to thills for harness connections to prevent the vehicle overrunning the draft animal.
(1) Note. Neck yokes are equivalent in function where poles are used.
  
[List of Patents for class 278 subclass 127]    127Harness attached:
 This subclass is indented under subclass 126.  Subject matter wherein a part of the harness is secured to the attachment.
  
[List of Patents for class 278 subclass 128]    128Breech strap:
 This subclass is indented under subclass 127.  Subject matter wherein the breech strap is the part of the harness.
  
[List of Patents for class 278 subclass 129]    129Adjustable:
 This subclass is indented under subclass 128.  Subject matter wherein the position of the attachment is adjustable on the thills.
  
[List of Patents for class 278 subclass 130]    130Automatic release:
 This subclass is indented under subclass 128.  Subject matter including devices permitting, under proper conditions, an automatic release of the harness from the attachment.
  

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