Abstract: An apparatus providing means for locking the controls of construction machinery in a safe position. Implements are maintained in a preset position safe from inadvertant control activation by an operator controlled locking gate which engages the control activating linkages when they are in a neutral position. A single locking gate may be used to lock several controls and unlocking, controlled by the operator, unlocks all of the previously locked controls.

Abstract: A weightlifter's protective gear adapted to releasably support a barbell assembly behind the neck and adjacently above the shoulders during exercises. Specifically, the gear comprises a pair of cushion-lined shield straddling the neck and fitting snugly against the shoulders and the upper front and back body areas of the subject, in combination with an upwardly extending notched projection or projections on the shoulder portions of the shield for supporting the barbell shaft, whereby the entire weight of the assembly is uniformly distributed over the shoulders.

Abstract: An operator's compartment mount which isolates the operator's compartment from the vehicle frame. The operator's seat mount and roll-over protective structure rear mount are secured directly to the vehicle frame. The front portion of the roll-over protective structure is mounted directly to the operator's compartment and the rear portion is isolation mounted to the vehicle frame.

Abstract: A tractor scraper suspension system having a tractor drive wheel axle frame pivotally connected to a tractor main frame to permit vertical movement of the tractor drive wheels relative to the tractor. A first pair of hydraulic cylinders is coupled between the tractor drive wheel axle frame and the tractor main frame to control and dampen such vertical bounce movement. A pair of arms extends transversely of an axis extending longitudinally of the tractor scraper and are included in a hitch assembly and operatively connected to the tractor drive wheel axle frame through a second pair of hydraulic cylinders for supplementing the first pair of hydraulic cylinders in controlling the vertical movement between the tractor drive wheels and to dampen tilting or rolling motion between the tractor portion and the trailer portion about their common longitudinally extending axis.

Abstract: A combination match retainer and igniter provided with an elongated striking chamber which is laterally expanded to receive an unlighted match in response to relative sliding movement in one direction between the retainer and its cover, and which is laterally contracted in response to said relative sliding movement in the opposite direction to grip the match preparatory to withdrawal and ignition thereof.

Abstract: Apparatus for protecting cantilevered mailboxes from damage caused by collision with passing vehicles, maintenance equipment and other objects thrown by the plows against the boxes while clearing the roadways. More specifically, the apparatus includes a vertically disposed column anchored in the ground and a laterally projecting arm hingedly secured to the upper portion of the column for swingably supporting the mailbox. A shear pin normally locks the hinge and associated arm and box against rotation. The pin is designed to shear in response to a predetermined torsional stress upon the hinge which stress is produced by the impact of a vehicle or other object striking the box or arm thereby permitting the box and arm to swing to non-obstructing position as the object passes.

Abstract: A two-element seal assembly for sealing relatively rotatable members wherein each seal element has annular radial lip type sealing contact with the other. The seal elements are shaped in a complementary fashion, one with relation to the other, whereby an annular labyrinth is formed therebetween and entrance of damaging materials into sealed area of an installation is effectively excluded by the lip seals and the labyrinth.

Abstract: An engine cooling system for the internal combustion engine of a motor vehicle, such as a construction machine or the like which operates on uneven or sloped terrain, comprises a radiator having a lower core section and an elongated upper section or top tank separated from the core section by a sealed baffle and extending transversely to the longitudinal axis of the vehicle. The cooling system further comprises fluid conducting passages connected between the radiator and the engine, including a radiator supply line and a radiator return line connected between the core section and the engine. The cooling system also comprises a pair of fluid outlet ports located near the bottom of the top tank and spaced apart from each other in a direction transverse to the longitudinal axis of the vehicle.

Abstract: A conveyor drive roller mounting system for controlling misalignment of the drive roller by mounting an end of the conveyor drive roller on a resiliently mounted torque arm which permits the drive roller to align with the conveyor path of movement.

Abstract: A hanger designed for supporting pork bellies during handling and processing into slabs of bacon which is characterized by a series of spaced prongs projecting in a common plane in generally right angled relation to an elongate cross frame formed by a pair of spaced cross bar members depending from a supporting hook formation and having a grip forming member adapted to be grasped while the prongs are inserted into the pork bellie and a further grip forming member extending in the direction opposite the direction of the prongs which is adapted to be grasped in removing the prongs from the bacon slab.

Abstract: A signalling device operatively coupled between the side arm or lifting boom of a pipe layer and the frame thereof in a predetermined fixed position such that movement of the signalling device relative to the fixed position, which occurs in response to the operational load, is directly related to the critical or rolling load for any lateral position of the side arm or lifting boom.

Abstract: A system for monitoring the operability of warning lamps which provide a visual signal in the event of the malfunction or unacceptable variation of a monitored function or control comprising a plurality of optical indicators or warning lamps electrically coupled to a single-control switch common to all warning lamps such that all lamps may be simultaneously illuminated upon the closing of the switch to determine their operability.

Abstract: A coupling hook for use in pulling vehicles. The coupling hook is formed with a single shank portion connected to the vehicle through tensile and compression supports for transmitting the pulling force coupled through the hook portion to the vehicle.

Abstract: A pair of self-propelled vehicles joined by an intermediate bridge having a rigid lifting arm hinged at one end to the intermediate bridge and having a device for gripping and lifting the pipes carried by the free end of the rigid arm such that the rigid lifting arm may be controlled to engage a pipe and lift it over the trench and lower the pipe into the desired position.

Abstract: An air pressurizing system including a double acting pneumatic cylinder operatively connected to hydraulic actuated equipment for operation thereby in response to movement thereof to pressurize a hydraulic fluid tank or reservoir and control the air pressure coupled into the hydraulic fluid tank.

Abstract: A shackle system for connection of control lines such as high-pressure hydraulic hoses, electrical cables or conduits, and air hoses having a flexible wire rope passing therethrough to which the control lines are attached.

Abstract: A mechanism for remotely manipulating a rotary adjustable choke device on the muzzle of a shotgun barrel. Specifically, the mechanism consists of a reciprocatory operating arm positioned intermediate the choke device and the breech end of the barrel, in combination with a connection between the arm and device for converting the reciprocatory motion of the former into oscillatory motion of the latter, thereby varying the muzzle constriction and shot pattern. The arm is positioned so that it may be manually reciprocated by the shooter to selected releasable positions corresponding to the desired choke settings and while the gun is held in firing position.

Abstract: A vehicle suspension system for controlling bouncing and pitching movement of a tractor and trailer unit. The suspension system comprises a four-bar linkage which cushions the vehicle ride by connecting the vehicle axle through the four-bar linkage to permit axle movement which cushions the tractor ride. The four-bar linkage comprises a scraper link, a final drive link, a power module link and a stabilizer link.

Abstract: An excavating machine having a work implement or material excavating tool articulated on the free end of a working arm of the excavator to absorb and dissipate high stress impact loading on the working tool incurred during machine operation.

Abstract: A crawler tractor has an engine-driven fluid power shifted transmission for supplying motive power to left and right crawler tracks through spring-applied fluid-released left and right steering clutches and also has spring-applied fluid-released brake actuators for the track brakes. A hydraulic control system for steering and braking the tractor includes a combined steering and braking valve having a pair of lever operated valve spools, a shuttle valve, and a supplemental brake control valve operated by a single brake pedal. The combined steering and braking valve, which includes a flow divider, directs fluid from a pump to the brake actuators to maintain the brakes released when the valve spools are in neutral. When a lever operated valve spool is moved from neutral to some other position, the combined steering and braking valve directs fluid to disengage a clutch and causes the brake for the associated track to be applied.