Abstract: An apparatus can include: a piston head configured to be disposed inside of a cylinder of an engine; a connecting rod device coupled to the piston head and extending therefrom, the connecting rod device including: a variable-length connecting rod including a female component with a hollow body and a male component disposed at least partially inside of the female component, the female component configured to be coupled to a crankshaft of the engine, one or more rollers rotatably disposed in or on the male component, and a connecting rod magnet movably coupled to the male component proximate to a position of the one or more rollers; and a piston coupling mechanism disposed at least partially inside of the piston head to couple the connecting rod device to the piston head. The connecting rod device can be configured to transition between a locked state and an unlocked state.

Abstract: A connector for use in as a third point connector for a tractor has a hydraulic and pneumatic chamber for providing an easy method to adjust the length of the third point connector to thereby change the angle between the tractor and an attached implement. When a release valve is opened, the two sides of the connector can be moved towards or away from each other as air enters from the environment or exits as needed to balance the pressure inside the connector. An induced air pocket in the hydraulic chamber allows for a slight cushion against the forces as the incompressible hydraulic fluid prevents larger swings in the length of the connector. One or more of the opposing ends may have threaded connectors to allow for general size changes to the connector.

Abstract: An internal combustion engine has a connecting rod which interconnects the engine crankshaft with a piston. The connecting rod is a flexible member which has one section connected with the piston and another section connected with the crankshaft and a spring or lost motion member interconnecting the two sections. When the forces imposed on the flexible connecting rod are sufficiently high, the spring member will permit the two sections to approach each other, thereby shortening the length of the flexible connecting rod and increasing the volume in a combustion chamber formed between the piston and an engine cylinder in which it is reciprocably disposed.

Abstract: In a connecting rod of a piston machine which comprises two separate parts which are longitudinally movable relative to one another but operatively interconnected and of which one part is connected to the piston and the other is rotatably mounted on the crank of a crankshaft, the two connecting rod parts are interconnected by a fluid spring structure in which a fluid is utilized as a spring element for operatively interconnecting the connecting rod parts.

Abstract: A shutheight adjustment mechanism of a press including a male threaded member threadedly engaged to a female threaded member with a clearance space therebetween is flooded with a liquid to reduce undamped free movement between the threaded members. Liquid injected in the clearance space causes a squeeze-film to be created, capable of supporting high impulse working loads. Seals define the clearance space to assure that the entire clearance space is filled with liquid. In one embodiment, the shutheight adjustment mechanism is included in the press slide.

Abstract: A tie rod device includes a vibration-absorbing damper. The tie rod comprises a tie rod assembly comprising first and second rods for interconnecting a rack shaft and a knuckle. The vibration-absorbing damper is interposed between the first and second rods for absorbing vibration transmitted from the knuckle.

Abstract: In a two-cycle internal combustion engine (2), the sidefaces (60, 62) of the connecting rod (48) have a polymeric material coating thereon, such as polytetrafluoroethylene, PTFE, providing a bearing between the sidefaces (60, 62) and the crankfaces (38, 40) of the crankarm discs (34, 36) of the crankshaft (24), to prevent galling and eliminate the need to silver plate the sidefaces (60, 62).

Abstract: A steering gear box mount includes a resilient member interposed between a motor vehicle body and a steering gear box for allowing movement of the steering gear box. The mount also has a structure for limiting allowed movement of the steering gear box. The structure includes a mechanism for selectively rigidly fixing the steering gear box to a motor vehicle body, or a mechanism for continuously adjusting the allowed movement of the steering gear box.

Abstract: A steering gear box mount includes a resilient member interposed between a motor vehicle body and a steering gear box for allowing movement of the steering gear box. The mount also has a structure for limiting allowed movement of the steering gear box. The structure includes a mechanism for selectively fixing the steering gear box to a motor vehicle body, or a mechanism for continuously adjusting the allowed movement of the steering gear box.

Abstract: In a die-height adjusting device of a mechanical press, a slide of the mechanical press is interlockingly connected to a prime mover through a slide actuating mechanism, and an extendible and contractible device for the adjustment of the die-height is provided at the part between the output end portion of the slide and the slide actuating mechanism supported by a frame. The extendible and contractible device is adapted to be adjusted and stopped in the extending and contracting direction thereof by an operating device for the extension and contraction adjustment. Said extendible and contractible device for the adjustment of the die-height comprises an extending and contracting mechanism and a clamp. Said operating device for the extension and contraction adjustment comprises an actuating means for the extending and contracting mechanism and a clamp actuating means.

Abstract: In a two cycle internal combustion engine (2), the sidefaces (60, 62) of the connecting rod (40) have grooves (64) formed therein dragging lubricant from the fuel-air-lubricant mixture in the crankcase (8) along the crankfaces (38, 40) of the crankarm discs (34, 36) of the crankshaft (24), providing a hydrodynamic bearing with a layer of lubricant separating the sidefaces of the connecting rod from the crankfaces of the crankarm discs such that the sidefaces of the connecting rod ride on a layer of lubricant, and eliminating the need to silver plate the sidefaces of the connecting rod.

Abstract: In a vehicle the steering system includes a steering gear housing transversely mounted relative to the vehicle body by means of a plurality of gear housing mount insulators. Each of the gear housing mount insulators elastically supports the gear housing in such a manner as to allow transverse displacement of the gear housing with respect to the vehicle body. A damper is provided to restrain the transverse displacement allowed by the gear housing mount insulators.

Abstract: An electric hydraulic control device for controlling hydraulic cylinders of work tools in a construction vehicle, in which control valves of the hydraulic cylinders are controlled in two ways. For some work tools which need not be controlled smoothly and finely, the corresponding control valves are controlled directly by an electric signal outputted according to the position of the operation levers, and for other work tools which must be controlled smoothly and finely, the corresponding control valves are controlled through an electric servo mechanism which is operated by an electric signal representative of the amount by which the operation lever is manipulated. In addition, there is provided a detector for detecting as to whether the transmission lever is in the locked condition, and electric systems of all of the control valves are rendered inoperative when the transmission lever is in the locked condition.

Abstract: A well sucker rod shock absorber apparatus employs cushion means located transversely of the rod string. Cushion means may also be located in association with the drive for the pumping unit that reciprocates the rod string.

Abstract: Apparatus for pumping oil from a well includes a hydraulic pump for reciprocating a sucker rod string. A counterweight is connected to the sucker rod string by a chain strung over sprockets within a compact framework. The hydraulic pump applies a shock absorbing back pressure to the sucker rod.

Abstract: The rotary output of the power source of an impact device is converted to reciprocation of a body, preferably having a resilient coupler, which drives a ram into impacting in an improved rotary-to-reciprocative motion converter including a crankshaft operatively interconnected to reciprocate the body. The converter includes a crankpin bearing, a flat bearing surface secured normal to the reciprocation on a connecting rod or directly on the body, and a constraint spring to hold the flat bearing surface in contact with the bearing during operation. The improved converter provides reciprocation free of angular motion of connecting rods and irregular motion within clearances between moving elements to significantly reduce extraneous harmonic vibrations and energy losses therefrom.

Abstract: A polish rod jack system for an oil well pumping units that utilizes a sucker rod; incorporating a hollow hydraulic ram to raise and lower the sucker rod string; hoses and tubing to connect the hydraulic ram to a remote manifold and in turn to a hydraulic pumping source; a hydraulic and electric switchgage to stop a prime mover in the event of pumping unit and system malfunctions and or failures; quick-disconnect fittings to facilitate connection and disconnection of the hydraulic ram from the system when the well is being serviced and to allow rapid connection and disconnection of a hydraulic pump at the remote hydraulic manifold to allow the bottom hole pump to be respaced and fine tuned while the pumping unit is in operation to maximize production.

Abstract: The reciprocating slide of a mechanically driven press has a ball and socket type interconnection with the connecting rod of the press drive mechanism. The socket component of the interconnection provides a rotatable adjusting screw threadedly interengaged with an annular piston received in a cylinder component on the slide. A locking nut threadedly engages the adjusting screw and is rotatable relative thereto and to the piston to lock the adjusting screw against displacement relative to the piston. During normal press operation the locking nut is biased against a shoulder on the cylinder by hydraulic fluid under pressure in a variable volume chamber between the piston and cylinder components. In response to an overload on the slide, a pressure responsive relief valve releases hydraulic fluid from the chamber and enables relative movement between the piston and cylinder components and thus between the slide and connecting rod.

Abstract: A power driven crankshaft is mounted on a frame and is connected by a pair of connecting rods to a coupler body, having guide means thereon to limit movement of the body to straight line reciprocation. Selected positioning and arrangement of crankshaft, bearings, connecting rods, journals, wrist pins, power drive means, reciprocating body guide means and selected crankarm result in high impact force being delivered to an impact tool with significantly reduced energy loss caused by oscillatory structural deflections spurious vibrations, and rotations. An improved coupler incorporates an air spring with selected central vent means resulting in nearly constant spring stiffness.