Abstract: Wrist pins for use in pistons are described. The wrist pin comprises an elongate, substantially hollow member having two spaced-apart convex surface portions of substantially cylindrical or oval curvature, the two convex portions being connected by two walls of different curvature. Because the connecting walls are more nearly in compression and bending loads are minimised a lighter wrist pin for a given application may be produced.

Abstract: A crankshaft used in piston engines has vibration and noise level normally associated therewith substantially reduced. The natural frequencies of torsional vibration of individual cranks are made unequal by making main journals of different outside diameters.

Abstract: An engine crankshaft has a crankpin that is radially slidably mounted relative to the crankshaft axis so that its axis can follow other than a circular path centered on the cranking axis. The mechanism includes at least one main bearing section with a stationary eccentric bearing surface, and at least one web fixed to the crankshaft and extending radially from the main bearing section. A housing is slidably mounted on guide surfaces on the webs for a sliding movement along the web, and has a crankpin secured thereto. The non-rotating eccentric bearing surfaces engaged by the housing force the housing to slide radially in and out along the web in synchronism with rotation of the crankshaft such that the distance of the center of the crankpin axis from the center of the main bearing section axis varies as a function of the angle of rotation of the crankshaft.

Abstract: A sliding bearing and a crankshaft used for a crankshaft-connecting rod assembly are disclosed. Particularly, the invention concerns a sliding bearing for a crankshaft-connecting rod assembly, in which journal sections are each provided at each end of at least one crankshaft, one of said journal sections is rotatably supported so that said crankshaft is rotated about said one journal section, a connecting rod has one end rotatably coupled to said other journal section, and a lubricant is supplied form an oil port of each said journal section.

Abstract: A sealed rotary transmission device comprises a control shaft and a receiver shaft parallel to and spaced from the control shaft. A bellows surrounds the receiver shaft, and has one end fixed in a sealed way to a casing of the device. The device also includes a transfer member constrained to move parallel to a plane perpendicular to the receiver shaft. The other end of the bellows is fixed to this transfer member in a sealed way. On each of the control and receiver shafts is a respective crank, eccentric to its axis by the same distance. These cranks are coupled to the transfer member and spaced by the same distance as the shafts. This enables circular translation of the transfer member.

Abstract: A crankshaft is provided which comprises a crankshaft body which is formed by forging. The crankshaft body includes a plurality of adjacent web core portions, crank pins interconnecting adjacent web core portions and journals which extend from the outermost of the adjacent web core portions. A plurality of balancer weights are formed by casting. Each of the balancer weights are integrally fored with, and surround, a corresponding one of the web core portions. Further, a method for manufacturing the crankshaft is disclosed.

Abstract: A device of the crank connecting rod type is proposed, including a crank arm (10) capable of being mounted to swivel about an axis (X--X) and provided with a pivot (14) which can be engaged by a connecting rod (16), which includes an extension (18) parallel to the axis of the pivot (14) and extended, beyond a crank connecting rod bearing face (20), by a radial tooth (22) arranged to remain in engagement with a rim (24) of the crank arm in any crank connecting rod operating position.

Abstract: A crankshaft with bearing pins and crank pins whereby the crank pins are delimited by counter weights constructed as webs or arms that extend transversely to the longitudinal axis of the crankshaft. These counter weights are circumcirculated during the rotation of the crankshaft at least by an air-oil-mixture in a crankcase and in an oil pan of the internal combustion engine. For reducing the power losses of the internal combustion engine by oil and or air-oil-mixture displacements by the webs or arms, the latter are constructed in their area disposed remote from the crank pins in the manner of aerodynamic bodies.

Abstract: A crankshaft mechanism for use with a press having a slide member which comprises an eccentric crankshaft having first and second cylindrical portions. The first portion is rotatable within a housing about a longitudinal axis and the second portion, of greater diameter than the first portion, has a center which is displaced radially from the longitudinal axis. An eccentric sheave is rotatably mounted on the outer circumference of the second portion of the crankshaft, and a connecting member is rotatably mounted on the outer circumference of the sheave. The second portion of the crankshaft, sheave and connecting member are provided with first, second and third radial bores respectively which are in alignment when the crankshaft is at its bottom dead center position. A locking pin slides within the radial bores and is displaceable by an actuator to a first position in which the crankshaft is connected to the sheave and a second position in which the sheave is connected to the connecting member.

Abstract: In a crank, a tri-iron tetroxide thin film is formed over at least one of the inner surface of a hole formed in a crank arm and one end of a crank pin, and the end of the crank pin is press fitted into the hole formed in the crank arm.

Abstract: A crankshaft for a 90.degree. V-type eight-cylinder internal combustion engine having eight balance weights of No. 1 through No. 8 balance weights and supported by five supports. An angle defined between the No. 1 and No. 2 balance weights is set at the range of 15.degree.-45.degree. and an angle defined between the No. 1 and No. 3 balance weights is set at the range of 45.degree.-75.degree.. The mass of each of No. 1 and No. 8 balance weights is greater than the weight of any one of No. 2 through No. 7 balance weights. These relationships can reduce the weight of a crankshaft and bearing loads.

Abstract: An eccentric drive mechanism includes two shafts that are coupled to a wheel-like drive member such as a pulley, with one of the shafts being in offset relation to the other shaft and the central axis of the drive member. Each shaft represents inclined, flat wall portions in mutual inter-engagement, and the wall sections are releasably brought into a position of wedging contact with each other and to the drive member in order that the rotative position of one of the shafts is retained in a certain, predefined orientation relative to the rotative position of the other shaft and to the drive member. The drive member is supported on both sides to avoid imposition of cantilever-type loadings, and the mechanism can be readily disassembled and re-assembled when desired to realign and reposition the rotative orientation of the two shafts relative to the drive member. The eccentric shaft is coupled to a sway bar of the header for oscillation of the sickle.

Abstract: A crankshaft for a V-6 type of internal combustion engine having longitudinally spaced journals and crank pins connected by a series of nine arms numbered from the front end to the rear end of the crankshaft is provided with counterweights on the first, second fifth, eighth, and ninth arms only. A line between a longitudinal axis of the crankshaft and an axis of a forwardmost crank pin defines, with the longitudinal axis, a reference plane. The centers of gravity of the first and ninth counterweights lie in the reference plane on opposite sides of the longitudinal axis and balance each other. The centers of gravity of the second and eighth counterweights are disposed counterclockwise and clockwise in the same quadrants, respectively, from positions that are 150 degrees and 30 degrees clockwise from the reference plane, when the crankshaft is viewed from the front.

Abstract: A V-shaped crankarm so arranged, constructed, and mounted that when the piston and piston pin are at top dead center and the greatest resistance to the downstroke is made by the crankarm, the V-crankarm will transfer the force of combustion via a crankpin arm portion, which is fixed at an angle to a crankshaft arm portion lying in a plane substantially perpendicular to the axis of the cylinder, in order to affect rotary motion.

Abstract: An integral gas compressor-prime mover utilizes the prime mover power shaft (18) to drive a crank plate (20). The plate (20) includes a plurality of securing sites (40) among which a crank pin (24) is selectably securable for changing the stroke length of the reciprocating compressor piston (56). A crosshead connector asembly (32) is provided to linearize the motion of the crank pin (24).

Abstract: A crankshaft assembly including a pair of crankshafts and an intermediate crank arm, wherein a through opening is formed in a crank web of each of the crankshafts to extend axially of the respective crankshaft. In assembling the part, one crankpin of the intermediate crank arm is force fitted in an opening formed in a crank arm of the one crankshaft and a jig having a columnar portion is inserted in the through opening formed in the one crankshaft to support the one crankpin, thereby providing a crankshaft sub-assembly. When another crankpin of the intermediate crank arm is force fitted in an opening formed in a crank arm of the other crankshaft, the pressure applied to the crankpin is borne by the jig, so that the other crankshaft can be accurately secured to the intermediate crank arm.

Abstract: The invention relates to a small, efficient hermetic compressor for refrigeration wherein reduction in size and minimization of parts is emphasized. The motor compressor unit is mounted within a sealed outer housing and comprises a cast crankcase, which is connected to the stator of the electrical motor by means of only three connecting screws that extend through the stator and are threadedly received in sockets in the downwardly depending legs of the crankcase. The crankshaft is pressed into the motor rotor and is journaled within the crankcase for rotation about a vertical axis. The crankcase includes a slot extending into the cylinder so that the connecting rod can be inserted laterally into the cylinder at the same time that it is slipped over the end of the crankshaft, and the wrist pin is then inserted through the same slot, through the piston and connecting rod, and is held in place by a spring clip.

Abstract: A connecting-rod system for mowers in particular, wherein, for actuating elements driven by alternate motion, there are used rods mounted on a crank which can be linked to the drive shaft by fitting a crank pin into a seat in the shaft itself. On the crank pin there is at least one flat wall intended for properly positioning the crank pin itself by interacting with a corresponding flat wall provided in said seat.

Abstract: Automobile windshield wiper apparatus wherein transmission linkage ball stud coupling combinations employ flat surfaces on facing linkage members in the area of each coupling cooperating with a polymeric one-piece socket bushing having a sealing skirt portion providing a lubricant seal.

Abstract: The invention relates to new and useful improvements in the design of partially constrained five-bar mechanism for use in reciprocating piston engines and compressors. The design comprises a piston and connecting rod assembly which is driven by a crank having an intervening linkage which varies the effective crank radius. The advantages of the design are in the larger swept cylinder volume which increases the air consumption rate and in the increased mechanical advantage during the power stroke. The mechanism accelerates the piston during the terminal phase of the compression stroke which improves ignition and combustion at lean limit operating conditions.

Abstract: A wrist pin for securing a crank arm with a pittman arm to translate rotary motion into longitudinal motion and comprising a shank adapted for insertion transversely through a bore provided in the crank arm, a retaining plate secured to one end of the shank and engagable with one face of the crank arm for positively securing the shank in engagement with the crank arm, an enlarged head member at the opposite end of the shank for engaging the opposite face of the crank arm in order to limit the movement of the wrist pin in one direction, and a connecting member extending axially outwardly from the head member for engagement with the pittman arm.

Abstract: A lightweight composite wrist pin is provided to decrease fuel consumption, attenuate noise, and permit increased speed of operation.

Abstract: A cast crankshaft with recesses or apertures provided in crank webs of the crankshaft and are formed in adjoining inner area of the casting material forming the main and crank pins by cores inserted therein prior to casting for the reduction of the weight and of the rotating out-of-round masses as well as of the counterweights thereof. A ratio of the smallest distance of the fillet of the crank pin from the outer surface line of the recess to the diameter of the crank pin lies between the values of 0.45 and 0.66, preferably at a ratio of about 1:2 with such distance being approximately as large as the distance between adjacent fillets at the crank and main pins from one another.

Abstract: A balancing mechanism in a conventional, multicylinder engine consisting of a mass linked to the static portion of the engine and dynamically linked to the engine crankshaft in such a manner as to establish an arcuate oscillation of the mass on rotation of the crankshaft for producing a primary harmonic shaking force and a secondary harmonic shaking force in the direction of greatest travel of the mass, and a secondary harmonic shaking force in a direction at right angles to said first-mentioned direction with these harmonic shaking forces adapted to balance other shaking forces developed within the engine. A crank-and-rocker mechanism is utilized in the balancing mechanism and the angular disposition thereof may be related to the position of maximum value of the engine harmonic shaking forces as distinguished from the dead center position of the engine.

Abstract: The invention is a reciprocating mechanism for use in piston driven compressors and in internal and external combustion engines. The design comprises a piston and connecting rod which is driven by a crank with an intervening transfer linkage for extending and contracting the crank radius during each revolution of the crankshaft.

Abstract: A crankshaft and its method of manufacture involves a straight, one piece shaft, with eccentric journals and circular gear base pressed onto the shaft and secured thereto in proper angular orientation.

Abstract: A windshield wiper drive mechanism includes an electric motor having a worm shaft which meshes with a gear assembly which is drivingly connected to a crank arm. A windshield wiper transmission link is also connected to the crank arm. The crank arm has an inner diametral bearing surface which is rotatably supported on a pin secured at one end in cantilever fashion to a housing, and an outer diametral bearing surface which is adapted for rotatable support in a cylindrical opening in another housing. The outer bearing surface has axially extending recesses in which a lubricant is retained. When high transmission loads are applied to the crank arm, the pin deflects slightly so that the increased bearing loads are supported on the outer bearing surface to prevent further deflection of the pin.

Abstract: A synchronizing and indexing clutch for connecting adjacent portions of a split engine crankshaft at will, such that one or more engine pistons may be selectively rendered inoperative for low engine power operation, the clutch including input and output members formed on the adjacent ends of the split crankshaft, an annular piston including inner and outer ring members interconnected by a detent mechanism and slidably mounted on the input member, a source of fluid under pressure for actuating the piston, cooperating cone clutch surfaces formed on the output member and the inner piston member, respectively, two sets of ramped indexing teeth formed on the output member and outer piston member, respectively, the two sets of teeth having a predetermined pattern of unequally spaced, variable width teeth and spaces such that engagement of the two sets of teeth will occur only at one particular aligned circumferential position in order to interconnect the split crankshaft portions and thereby bring idle engine pisto

Abstract: A balanced multiple-throw crank-shaft wherein the free forces of the first and second orders forming resultants for the whole crank-shaft of the forces produced by each coupling are substantially zero and at least some of the crank-throws are shifted or offset angularly, respectively, by such a small angle in one direction of rotation and by such an amount relative to the corresponding circumferentially uniformly distributed angular positions they would assume in a configuration with angularly equally spaced crank-throws in orthogonal projection on a plane perpendicular to the geometrical spin axis of rotation of said crank-shaft that an improved balancing ratio will result therefrom.