Abstract: A crank mechanism such as in a two stroke internal combustion engine has a lubricating system comprised of an oil passage formed in the crankarm and the crankpin with one end opening to the bearing between the connecting rod and the crankpin and the other end to the side surface of the crank arm facing to the main bearing. Lubricant oil is supplied through the main bearing and an oil receiver which is located between the crankarm and the main bearing. The oil receiver is held in position by being axially compressed and resiliently deformed between the crankarm and the main bearing. For the purpose, the oil receiver is formed with a resiliently deformable portion.

Abstract: A porous rod for inclusion in a lubricant metering valve is provided with radially projecting means forming an annular shoulder intermediate the length of the rod. The rod is tightly enveloped in an impervious sleeve which extends over at least a portion of the length of the rod. An annular sealing member is disposed on the rod in engagement with the shoulder, the sleeve and the opposed wall of the bore of the valve. The sealing member is compressed into proper sealing mode with assembly of the male and female valve members to preclude passage of lubricant through the valve except by passage through the porous rod.

Abstract: A non-contact type seal between two adjacent crankchambers of a multiple cylinder two stroke engines includes a sealing member fitted to the crankcase to encircle the crankshaft or the sleeve fitted to the crankshaft with a slight clearance between the sealing member and the crankshaft or the sleeve. A lubricant oil passage is formed in the sealing member to open to the clearance between the sealing member and the crankshaft or the sleeve so that the clearance is filled with lubricant oil which is to be supplied to the bearings at the opposite sides of the sealing member. The seal between the two crankchambers is provided by the lubricant oil in the clearance.

Abstract: An internal combustion engine has an oil pan divided into two chambers that communicate with each other. The first chamber is at a distance above the bottom of the oil pan, which is also the bottom of the second chamber. Because the bottom of the oil pan is cooled by the slip stream the oil in the two chambers are at different temperatures. Suction lines lead from each chamber to a thermostat valve that connects them to a discharge line. The thermostat valve operates such that when the engine is cold the oil supplied to the discharge line is relatively hot oil from the first chamber and when the engine is hot the relatively cool oil from the second chamber is supplied via the valve.

Abstract: An engine having piston-controlled cylinder air intake ports into which lubricating oil may be carried during engine operation is fitted with porous liners in the cylinder intake ports which receive the lubricating oil to prevent its being carried by the inlet air into the engine combustion chamber and exhaust system. Collection and return passages are provided to receive oil drained from the porous liners and return it to the engine crankcase and oil sump. A slight flow of pressurized air from the engine air chamber aids the draining and return passage of oil from the porous liners to the crankcase.

Abstract: An oil pan for internal combustion engines having a piston--piston rod--crankshaft assembly effecting "splash" lubrication and having a pressurized engine lubrication system. The oil pan substantially reduces unnecessary "splash" and thus increases engine efficiency. The oil pan has a main sump disposed below the bottom wall of the pan for containing oil. There is a side sump disposed in one side wall of the oil pan and in fluid flow communication with the main sump. An elongated windage tray, semi-circular in cross-section, is provided and is positioned longitudinally in the oil pan adjacent the side sump with the convex side down and is spaced above the pan bottom wall. A coacting elongated skimmer bar is positioned above and spaced from an upper edge of the tray adjacent and slightly above the side sump for channeling oil skimmed off the tray into the side sump and then into the main sump in controlled flow.

Abstract: An improved oiling apparatus for the camshaft lobes of an engine. The bearing portion of the camshaft is supported within a bore between an upper bearing cap member and a lower cylinder head member. Oil passage means extend from a source of pressurized oil through the upper and lower members and intersect or open to the bore at circumferentially spaced locations. The passage openings are interconnected during a portion of the camshaft rotation by a closed-ended groove in the camshaft bearing portion. A small opening or orifice in the cap member communicates with the oil passage and its axis is orientated slightly from normal to the surface of the cap member so as to direct a fine stream of oil onto an active surface of the nearby camshaft lobe. The small hole or orifice opening is drilled through the cap member from a recessed surface established substantially flat and normal to the intended axis of the orifice opening.

Abstract: The radial bearing is constructed such that the lubricant passing from between the rotating shaft and the stationary bearing is drawn back into the rearmost terminal region of the groove between the bearing and shaft in order to eliminate cavitation. The connecting rod and bearing cap may be formed with an annular groove from which the lubricant is drawn back into the groove between the bearing and shaft or the outer periphery of the bearing can be provided with a groove from which the lubricant can be drawn. Also, the inner surface on the bearing can be provided with one more groove extensions to permit return of the lubricant to the rearmost region.

Abstract: A bearing structure for a cam shaft has a first journal-receiving cavity of a semi-circular cross section provided in an upper face of a cylinder head, and a second journal-receiving cavity of a semi-circular section provided in a lower face of a bearing cap. The bearing cap is mounted on the cylinder head with the two faces joining together. A groove is provided in at least one of the two joining faces to extend across that face and to communicate at one end thereof with the internal space of the cylinder head so as to collect or intercept oil leaking out through a clearance left between the two adjacent faces.

Abstract: Lubricating assembly for gas line ball valves in which a pressure vessel adapted to be filled with a lubricating fluid mounted above the ball valve, the pressure vessel having a descending discharge conduit ported into the valve body between spaced annular seals between which a ball valve element seats so that gas escaping from the ball valve flows into the pressurized vessel and lubricating oil flows by gravity through the conduit into the valve body.

Abstract: An oil pan assembly for an automotive vehicle is formed with an oil pan which is divided by a partition wall into a first and a second chamber. Oil is pumped by an oil pump from the first chamber into the engine of the vehicle through a pipe including an oil strainer. The partition wall is provided with a temperature responsive valve which closes when temperature of the oil is below a predetermined level to cut off flow communication between the second chamber and the first chamber. Thus, with the valve closed, all the oil going to the vehicle engine is drawn from the first chamber. When the temperature of the oil rises above a predetermined level, the temperature responsive valve opens thereby permitting oil circulation from the second chamber into the first chamber.

Abstract: An oil circulating and cooling system for an internal combustion engine having an oil pump to pump the oil under pressure throughout the oil distribution system of the internal combustion engine and an oil pressure regulation circuit in parallel with the oil distribution system of the internal combustion engine. The oil pressure regulation circuit comprises a relief valve for diverting a portion of the oil from the oil pump to the oil pressure regulation circuit thereby setting the maximum value of the oil pressure throughout the oil distribution system of the internal combustion engine and an oil cooler for cooling the oil which has been diverted to the oil pressure regulation circuit. Since the oil temperature and oil pressure at the output of the oil pump increase with increased engine rpm, the oil is only cooled when the engine rpm is high.

Abstract: An internal combustion, reciprocating-piston engine which includes a sealed crankcase for inducting and compressing air or an air-fuel mixture into the engine. The compressed gas is then forced into a holding tank for subsequent induction into the cylinder combustion chamber. This pre-compresses or "supercharges" the fuel mixture before compression by the piston. An enclosed lift tube within the connecting rod is provided for conveying lubricating oil through the crankcase to the cylinder walls.

Abstract: An oil pan designed for installation underneath a crank case of an internal combustion engine, the oil pan of the present invention consisting of two separate sections each of which is secured independently to the engine as well as to each other so that either one can be selectively removed while the other is left on so to eliminate the labor of removing the entire oil pan.

Abstract: An oiler assembly is disclosed for feeding a relatively precise and consistent lubrication. The assembly includes a supply of the lubricant and a flow line placing the supply in communication with the lubrication point. A metering valve is interposed in the flow line and generally comprises a body having an inlet and an outlet. The body further includes a bore having one end thereof in communication with the inlet and the other end thereof in communication with the outlet. A porous rod is disposed in the bore of the body. A sealing member is disposed in the bore to preclude the passage of lubricant from the inlet end to the outlet end of the bore except by passage through said porous rod. An impervious coat on the rod extending over at least a portion of the length of the rod determines the length of the flow path for the lubricant passing through the rod. The impervious coat may be a plastic sleeve, peelable to alter the length of oil travel and so provide adjustment of the feed rate.

Abstract: An oil pressure detecting apparatus for an internal combustion engine comprises an LC oscillator having an inductance variable in dependence upon variation in the oil pressure of the engine. The frequency or voltage of an output signal of the oscillator is compared with that of a reference signal having a predetermined relation to the number of revolutions of the engine, thereby to determine if the oil pressure is within an acceptable range.

Abstract: A crankcase for multi-cylinder reciprocable piston internal combustion engines of the single row type, in which a lubricant feeding bore extending in the longitudinal direction of the crankcase is arranged in the vicinity of the camshaft bearings and communicates through connecting bores with the crankshaft bearings. These connecting bores extend outside the connecting screws for the bearing covers through abutment surfaces by means of which the crankshaft bearing covers engage the crankcase, and lead into transverse bores in the crankshaft bearing covers. The above mentioned connecting bores intersect bores through which the connecting screws for connecting the bearing covers pass and eventually lead into the crankshaft bearings.

Abstract: A strip of sheet metal moves horizontally between upper and lower felt rollers, turning them in opposite directions so that the lower roller continuously picks up oil from an oil bath. Oil is dripped down onto the upper roller from a device which is continuously provided with oil from a reservoir. The distribution device provides for an excess of oil to be bypassed and deposited into the oil bath below, and the level of the oil in the bath is used to control the flow of oil to the distribution device. The device comprises a tension spring so supported above the upper roll that oil from the reservoir flows into one end, and depending upon the spacing between the spring convolutions, a portion flows out through these convolutions, and the remainder is bypassed through the other end into the oil bath. A uniform distribution of oil along the axial extent of the upper roller is made possible by the spring type distribution device.

Abstract: A reciprocating-piston-type internal combustion engine, particularly for the operation of passenger automobiles. The engine includes a cylinder head and a crankcase. The upper portion of the crankcase is integrally casted with the cylinder head. A cavity in the crankshaft is connected with ducts supplying lubricating oil to the bearing surfaces for the connecting rods and to the bearing surfaces of the main bearings.

Abstract: An internal combustion, reciprocating-piston engine which includes a sealed crankcase for inducting and compressing air or an air-fuel mixture into the engine. The compressed gas is then forced into a holding tank for subsequent induction into the cylinder combustion chamber. This pre-compresses or "supercharges" the fuel mixture before compression by the piston. An enclosed lift tube within the connecting rod is provided for conveying lubricating oil through the crankcase to the cylinder walls.

Abstract: In an automotive internal combustion engine, a rear main bearing is channeled with one or more channels to direct the high pressure output oil flow away from the rear main seal. The channeled oil flow prevents a high pressure buildup adjacent the rear main seal and attendant deterioration thereof and oil leakage therethrough.

Abstract: A cloth cutting machine having an improved lubrication system therein including a motor mounted on the machine housing for driving a crosshead supported in a crosshead guide through link means, and a lubricant reservoir positioned above the crosshead and having a plurality of wicks emanating therefrom for conducting lubricant to areas of contact between the crosshead and the crosshead guide and between the crosshead and the linkage which drives it.

Abstract: A device for lubricating the cams of camshafts of reciprocable piston engines according to which oil under pressure is supplied to circumferential and axial grooves provided in the bearing or bearings for the camshaft. From the axial groove or grooves oil is intermittently sprayed upon a selected surface of the cam or cams of the camshaft. To this end, the axial groove is radially spaced from the central axis of the camshaft, and intermittently at a certain circumferential angle relative to a selected surface portion of the cam, for instance the active elevated cam portion, oil under pressure is sprayed from the axial bore onto the selected cam surface to be lubricated.

Abstract: A system for separate oil lubrication for internal combustion engines, especially for 2-cycle engines, comprises a tank of oil under pressure and a pump composed of a shaft engaged inside a bore with slight play, at least one of these two elements being threaded and the other being smooth or threaded, these two elements being in relative rotation.