Abstract: A pressure control valve having improved damping means which permits the valve to have a high degree of response combined with improved stability. The valve includes a valve spool mounted within a valve body and shiftable against spring pressure from a normal position to a nominal design operating position wherein discharge ports in the valve body are placed in communication with the inlet port. First damping means are provided which become operational only as the control member attains the nominal design operating position, the first damping means including an orifice in the valve body and a ring carried by the valve spool, the ring overlying the orifice when the valve spool attains its nominal design operating position.

Abstract: A control mechanism for shifting the differential lock mechanism of a vehicle between unlocked and locked positions. The differential lock is hydraulically operated and is controlled by a two position hydraulic valve. A control link extends from the hydraulic valve to the control mechanism. When the control link is disposed in a retracted position the differential lock will be disposed in an unlocking position, and when the control link is disposed in an extended position the differential lock will be in its locking position. The control mechanism includes a pivoted cam-like member and a pivoted catch member provided with cooperating surfaces, biasing means operable to bias the cam-like member to a retracted position and actuator means operable to shift the cam-like member away from its retracted position through engaged and stop positions to a release position.

Abstract: Apparatus for a transfer case that has a multiple path drive system including a neutral position, a first drive path of one speed range and a second drive path of a different speed range, the apparatus including (1) a hydraulic cylinder assembly having piston means movable to three positions and a rod connected to the piston means and to a shift mechanism of the transfer case for moving the shift mechanism of the transfer case selectively to one of the three positions of the drive system, and (2) a hydraulic control valve means for selectively controlling from a remote location operation of the hydraulic cylinder assembly.

Abstract: An improved draft and position control system for a tractor. Independent manually operable draft and position controls are provided for establishing a desired draft and/or position of an implement drawn by a tractor. The position control establishes the maximum lowered position to which the implement may descend and will override any draft signals which would tend to lower the implement beyond this point. The draft control includes the draft responsive member interconnected with a feedback mechanism which will tend to maintain the desired draft on the implement. An additional position feedback is provided which can moderate the draft feedback to prevent undue response of the implement during changes of the draft load. In accordance with the principles of this invention the position feedback which moderates the draft feedback can be infinitely varied between a first setting wherein it fails to moderate to a second setting where it substantially moderates.

Abstract: Apparatus for shifting a transmission including a shift collar axially movable on splines on one rotary member for engagement with the splines of an adjacent rotary member to provide corotation of the rotary members, the shift collar and the adjacent rotary member having engagement means responsive to thrust applied axially to the shift collar for initially synchronizing rotation of the shift collar and the adjacent rotary member and then for guiding the splines of the shift collar onto the splines of the adjacent rotary member, the engagement means being constructed and arranged so that the parts to be synchronized can be guided together from positions of wide angular misalignment to positions of proper axial alignment for completing the shifting operation.

Abstract: A hydraulic connection for establishing a fluid connection between a hydraulic unit mounted within a housing and a fluid line which terminates outside of the housing. The housing is provided with a threaded aperture in line with a cylindrical recess on the hydraulic unit which is in communication with a port. One end of a standpipe, having O-rings at either end, is inserted in the cylindrical recess of the hydraulic unit. A counterbored threaded fitting is screwed into the aperture, the counterbore receiving the other end of the standpipe. A fluid line is connected to the fitting.

Abstract: An improved hitch link assembly for connecting an implement to a tractor. Each of the draft links of a tractor having a three point hitch includes forward and rear link constructions which are interconnected together in such a manner that the rear link construction can reciprocate with respect to the forward link construction between a rearward position and a forward position and can also swing from a generally horizontal position to an angled position with respect to the forward link construction. The rear link construction is in its normal working position when it is in its rearward position and in its generally horizontal position. In addition, novel engaging means are provided to firmly hold the rear link construction in its normal working position.

Abstract: An improvement in a Jacquard-harness of a weaving machine in which the spacing of the heddles for adjusting the width of the material are adjustable. The harness is composed of a plurality of series arranged comber boards each having guide bores therein adapted to receive a harness cord therein. A connection is provided between a pair of such comber boards and consists of rigid, non-bending connecting rods each connected through a pivotal joint. A comber board is secured to a shaft which forms the pivotal joint. A portion of the bores in the comber boards lies on the axis of the shaft which also constitutes the central axis of the comber board. The remaining bores in the comber board are arranged in a mirror image manner symmetrical to the plane connecting the center lines of the comber boards.

Abstract: A control system for a tractor vehicle having an operators station resiliently mounted relative to the chassis in which the control system passes through a wall of the operators station and incorporates mounting means acting to support the control system to accommodate relative movement between the operators station and chassis and also to act as a seal to prevent passage of dust and dirt to the operators station and in addition, to act as a suspension supporting the control system in a manner for dampening vibration and noise which otherwise would be transmitted through the control system to the operators station.