Abstract: A steering control system for a tracked vehicle includes an engine driven variable displacement steering pump which drives a hydraulic motor. A control system senses steering wheel position, vehicle speed, engine speed and forward/reverse vehicle direction. As a function of these sensed inputs, a control signal is generated and is used to control the swashplate angle of an engine-driven variable displacement pump which drives a steering motor which drives a differential track drive mechanism. The control system also determines a ratio of motor speed to vehicle speed and generates a powerboost signal when the ratio exceeds a threshold value. The powerboost signal is communicated to the engine controller which causes the engine to increase its power output. This modifies the engine fuel delivery curve based on the steering system power requirement and increases the power available for turning the vehicle.

Abstract: A video line processor for varying the size of a video image portion along a video line in an image processor in which image size variation occurs first along horizontal lines and then along vertical lines and in which intermediate and final frames are stored in memories in which row and column addressing is interchanged on alternate frames. The line processor has a line memory for storing pixel values along each video line, has a pair of arithmetic circuits, one of which receives pixel values delayed in relation to pixel values received by the other, and has a coefficient memory with memory locations corresponding to pixel values along a video line, each of these locations being loaded between video frames with an address for the line memory and with coefficients for the arithmetic circuits to control, respectively, the position of each pixel value along a line and the transformation of the value.

Abstract: A method and processor for varying the size of a digitized video image in bstantially two video frame times by transforming successive lines of the image along one axis and then transforming successive lines of the image along the other axis.

Abstract: A four-wheel drive tractor with front and rear frame structures joined for articulation about a generally upright pivot has a split change speed-transmission. The first section of the transmission is supported on the front frame structure of the tractor and provides direct drive and overdrive speed ratios. A second section of the transmission is supported on the rear frame structure of the tractor and has a plurality of forward and reverse transfer ratios. A power take-off on the rear frame structure of the tractor is driven by the drive between the first and second sections of the transmission and includes selectively engageable and disengageable clutch means. An interlock between the clutch means and the first section of the transmission shifts the first section of the transmission to and/or holds the first section of the transmission in its direct drive condition whenever the PTO clutch is engaged. In this manner damage to any PTO driven implement coupled to the tractor as a result of overspeed is avoided.

Abstract: The disclosed device eliminates the undesired rotational movement of an installed in-line power switch of the type having a ribbed insulator through which an insulator rod is extended into metallic end fittings. The end fittings carry the electrodes or contacts of a blade switch assembly and at least one of the end fittings is adapted for pivotal mounting to the clevis member end of a strain link. The end fitting at the pivotal mounting is provided with integral projecting tongues which project away from the pivot axis and engage a surface of the clevis thereby to reduce the relative rotation between the end fitting and the clevis member about the pivotal mounting. In one embodiment the tongue includes an inclined surface adapted to wedgingly engage a corresponding inclined surface of the clevis member in a complementary relationship therewith.