Abstract: A push-pull coupling (18) for wheel supported power scrapers (10 and 14) has a coupling means (26) supported for cushioned fore-and-aft movement in a mounting frame (21) at the rear of a first power scraper (10) and a power operated bail (39) at the front of a second power scraper (14). The coupling means (26) has a rearwardly facing hook (37) against which a bight (39a) of the bail (39) may push, and a forwardly facing hook (38) against which the bight (39a) of the bail (39) may pull.

Abstract: A push frame assembly for a scraper bowl is provided with a tubular structural member extending between, and being rigidly fastened directly to, the side walls of the push frame. A push block and a spreader tube are, likewise, connected between the side walls to produce a relatively rigid frame assembly. In one form of the invention, the tubular structural member has a transverse sleeve therethrough through which an ejector cylinder passes, while in another form of the invention, the tubular structural member has provision for receiving a differential and has reinforced mounts on the one side thereof for connection of ejector cylinders thereto. A method of making a push frame assembly is provided wherein a pair of side walls are fastened directly to a tubular member with a spreader tube and a push block framework connected to the side walls to produce a stronger push frame assembly.

Abstract: A push frame assembly for a scraper bowl is provided with a tubular structural member extending between, and being rigidly fastened directly to, the side walls of the push frame. A push block and a spreader tube are, likewise, connected between the side walls to produce a relatively rigid frame assembly. In one form of the invention, the tubular structural member has a transverse sleeve therethrough through which an ejector cylinder passes, while in another form of the invention, the tubular structural member has provision for receiving a differential and has reinforced mounts on the one side thereof for connection of ejector cylinders thereto. A method of making a push frame assembly is provided wherein a pair of side walls are fastened directly to a tubular member with a spreader tube and a push block framework connected to the side walls to produce a stronger push frame assembly.

Abstract: A three-point implement hitch employed to secure an implement forwardly of a propelling tractor. The implement hitch includes a frame on which a pair of forwardly extending lower links are mounted for lateral adjustment. An intermediate portion of each of the lower links may contact a rub block on the hitch frame. The forward ends of each of the lower links rotatably carries an apertured ball which is disposed about a hitch pin on an implement and is secured in place by a lynchpin. When the rearward ends of the lower links are adjusted towards each other and mid-portion of each of the lower links is moved adjacent its associated rub block thus stabilizing the implement and controlling side to side sway. The implement hitch frame can be readily attached to and detached from a tractor.

Abstract: A front mounted ground supported tractor attachment, steerable with and pushed by the tractor, includes a portable frame supported on caster wheels and a drive linkage connected between the frame and tractor. The drive linkage is connected to the tractor for pivotal movement about a transverse axis and the frame is connected to the drive linkage by a swivel connection for pivotal movement about a longitudinal axis relative to the tractor. In one embodiment, the drive linkage engages the frame for transmitting the pushing force of the tractor to the frame substantially independently of the swivel connection and the caster wheels allow the frame to turn with the tractor as it is steered in the usual manner. Wear plates are carried on the engaged surfaces of the frame and drive linkage.

Abstract: A hitch assembly for a vehicle having a rearwardly extended frame adapted to be contacted by a trailing vehicle and including brackets mounted on the frame operative when the vehicle is being pushed to provide a stop against overriding of the trailing vehicle relative to the frame. A connector member is removably associated with the frame and has releasable connection to the brackets thereon for converting the frame to a towing mode.

Abstract: A push bumper is disclosed which is removably attachable to the front of a conventional snow plow and usable in pushing stalled vehicles and the like. The push bumper includes a rigid push plate, the front face of which is covered by a resilient material. The push plate is attached to the front of the snow plow through a hinge so that the plate pivots about a vertical axis and will follow the vehicle being pushed.

Abstract: A bulldozer blade mounting assembly is provided for mounting a bulldozer blade on the front of a tractor. The mounting assembly includes a push frame connected between the tractor and the lower portions of the blade. A combined cushioning and stabilizing linkage assembly is provided with a link extending diagonally between each push arm of the push frame and the upper rear corner portions of the blade. The stabilizers on each link are interconnected with a closed loop hydraulic system so as to ensure that any deflection in one link must also occur in the opposite link.

Abstract: This invention relates to a tool suspension for mounting tools upon either the front or rear of a vehicle in the form of a three-point suspension for hydraulic lifting and lowering. A hydraulic mechanism comprising two mutually independently operable cylinder assemblies each connected to respective lower suspension arms of the three-point suspension. All hinged joints of the suspension being movable in all directions.

Abstract: A front mounted ground supported tractor attachment, steerable with and pushed by the tractor, includes a portable frame supported on caster wheels and a drive linkage connected between the frame and tractor for pivotal movement of the frame about both a transverse axis and a longitudinal axis relative to the tractor. The drive linkage transmits the forward motion of the tractor to the frame and the caster wheels allow the frame to turn with the tractor as it is steered in the usual manner. A pair of elongated push members on the drive linkage help push the frame while permitting it to pivot or swivel about the longitudinal axis. Abutment means limits the downward and forward pivotal movement of the frame relative to the tractor for safety.

Abstract: A selectively actuable push-pull vehicle coupling to be utilized in assisting loading of a vehicle by pushing or pulling the vehicle being loaded. A push plate and tow bar are operatively connected through a common shock absorber which is utilized to cushion vehicle impact during both pushing and pulling operations.

Abstract: A selectively actuable push-pull vehicle coupling to be utilized in assisting loading of a vehicle by pushing or pulling the vehicle being loaded. A push plate and tow bar are operatively connected through a common shock absorber which is utilized to cushion vehicle impact during both pushing and pulling operations.

Abstract: An improved bail for a push-pull scraper includes a straight tubular members having a plurality of longitudinal slots provided in the ends thereof, and curved members having end portions of reduced diameter and having longitudinal ridges provided thereon whereby the ends of the curved members will fit telescopically within the ends of the straight members with the longitudinal ridges disposed within the slots in the straight members for extended welding thereof.

Abstract: A bulldozer blade has operatively connected therewith compression struts which include resilient means for cushioning the shock of impact applied to the blade. Each strut includes cylinder means, rod means reciprocal relative thereto, and a piston mounted on the rod within the cylinder means. First cushioning means cushion initial movement of the rod inward of the cylinder, and subsequent movement of the rod inward of the cylinder is cushioned by the first cushioning means and also second cushioning means. Rebound movement of the rod relative to the cylinder means is cushioned by third cushioning means.

Abstract: A vehicle pushing bumper having a resilient roller rotatably mounted on a bracket secured to the front bumper of a motor vehicle. The spin of the roller, together with its resilient construction, prevent a drag on and damage to a vehicle being pushed by the vehicle provided with the pushing bumper. Usually, a pair of pushing bumpers will be disposed in symmetrical relation on the front bumper of a vehicle for assuring continuous contact between at least one of the pushing bumpers and the vehicle being pushed.

Abstract: A construction vehicle has a push-pull arrangement mounted on a forward end of the frame thereof. Such arrangement comprises a detachable bail pivotally mounted on the frame and adapted for engagement with a hook of another vehicle and a detachable push block assembly detachably mounted on the frame. A common bore is formed in the frame and push block assembly to mount a like-shaped annular member for transmitting shear loads imposed on the push block assembly to the frame directly.

Abstract: A push-pull coupling for tandem earthmoving scrapers is disclosed wherein the coupling may be rapidly connected or disconnected, thereby permitting the scrapers to operate either in unison or separately. A push block having a pulling hook projecting therefrom is mounted on the rear of a forward scraper, while a push block and a bail for engaging the hook are mounted on the front of a rearward scraper. Furthermore, at least two sets of two-way shock absorber assemblies which can absorb the shock loads caused in the course of the pushing or pulling operations are respectively connected between the push block of the rearward scraper and a reinforcing member fixedly secured to the front thereof.

Abstract: Apparatus for effecting a driving connection between a pushing vehicle and a pushed vehicle. The apparatus has pushers attachable to and providing a bumper formation on the leading end of the pushing vehicle for pushing engagement with the wheels of the other vehicle. Each pusher includes a frame pivotally attachable to the leading end of the pushing vehicle for left and right swinging thereon about a vertical axis independently of the frame of the other pusher, and a coupler slidably carried by the frame for reciprocable sliding movement in a substantially horizontal direction transversely of the pushing vehicle.

Abstract: A coupling capable of selectively connecting and disconnecting tractor-scraper units so that they may operate either in push-pull tandem relation or individually. A first push block and pulling hook are arranged at the rear of the front tractor-scraper unit, whereas on the front of the rear unit there are arranged a second push block for contact with the first push block and a ball for engagement of the pulling hook. The second push block is pivotally supported at its top end, and the bail is pivotally connected to the bottom end of the second push block. Arranged between the bottom end of the second push block and the tractor framework of the rear unit are a pair of what are herein termed two-way shock-absorber assemblies which are dually effective to minimize the shocks caused upon contact between the first and second push blocks and upon engagement of the pulling hook by the bail.