Abstract: An internal combustion engine includes a crank shaft having a crank web, a crank pin on one end of the crank web, and a weight on an opposite end of the crank web, a crank case supporting the crank shaft therein, a cylinder, a piston reciprocally fitted in the cylinder, a rod coupled to the piston by a piston pin and connecting the piston to the crank pin for reciprocally moving the piston in the cylinder, the crank case having an opening and extending obliquely to axes of the crank shaft and the cylinder. The cylinder has an end corresponding to a bottom dead center of the piston and having a first recess opening toward the opening, the first recess being of a size allowing the piston pin to pass therethrough when the piston is in the bottom dead center. The weight on the crank web has on one side a second recess of a shape defining with the end of the cylinder a space allowing the piston as disconnected from the rod to pass therethrough.

Abstract: Disclosed is a fuel injection quantity controlling device for diesel engines having a vertically extending crankshaft. The device has a control rod disposed in parallel with the crankshaft. In the event of a failure in the mechanism for vertically and reciprocatingly driving the control rod, e.g. a lever, link or the like, the control rod moves downward by the force of gravity to automatically stop the fuel supply to the unit injectors.

Abstract: Two embodiments of lubricating systems for the four cycle engine of an outboard motor, each of which embodies a lubricant sump that is disposed beneath the engine and to which lubricant is returned by gravity. In each embodiment, a buffer volume is provided that receives lubricant when the engine is oriented in other than a desired position so that the oil will flow into this buffer volume rather than being discharged from the sump. The lubricant is returned to the engine from the buffer volume when the engine is again placed in its normal orientation. In one embodiment of the invention, the buffer volume is provided by the camshaft chamber of the engine.

Abstract: An internal combustion engine adapted to be mounted on a vertical axis. The engine is preferably a two-cycle engine having a positive displacement supercharger operating on the same crankshaft as the engine and includes a flywheel mounted on double-throw arm between the bank of engine cylinders on one side and the supercharger cylinders on the other side. Provision is also made for the use of an auxiliary turbine device to use exhaust gases to augment the power developed by the engine.

Abstract: An internal combustion engine is provided which comprises an outside member including a cylinder block section and a crankcase half section which are both casted into a single body, the crankcase having an opening formed therein which has an opening edge arranged in an inclined relationship to the center axis of a cylinder and also to the center axis of a crankshaft, and a crankcase half having a corresponding opening edge thereon for covering the opening of the crankcase half section.The inclined opening of the crankcase half section facilitates working of the inside of the crankcase half section and the cylinder block section and assembling of internal parts within the outside member.

Abstract: A gear drive for driving accessories such as an oil pump for a two-cycle engine (10) includes a worm member (25) mounted on the crankshaft (14) of the engine. The worm member (25), formed of a low friction plastic material such as nylon impregnated with molybdenum disulfide, engages a worm gear (24) mounted on the engine (10) to drive the oil pump (21).

Abstract: A control unit for the lubricating oil circulation pump and for the fuel injection system regulator of diesel engines, comprising a shaft extending through the cylinder block from the oil sump to said regulator, which is mounted externally, said shaft being operationally connected at an intermediate point thereof to the engine cam shaft, and at its opposing ends to the power take-offs of said circulating pump and regulator respectively.

Abstract: An improved lubricating system for a two-cycle outboard motor having a vertically extending crankshaft. The lubricating system employs a crankshaft driven pump and circulating system that permits pressure lubricating without necessitating elongation of the crankshaft or engine. The engine is enclosed within a cowling and an oil sump is conveniently located within the cowling and is accessible through a cover door of the cowling for replenishment of the oil supply without removal of the cowling.

Abstract: A lubricating system for two-cycle crankcase compression internal combustion engines that provides adequate lubrication under all running conditions. The speed of the engine is sensed and provides a control signal to a mapping device which supplies the amount of lubricant between the maximum and minimum anticipated loads at that speed.

Abstract: A water cooled, four-cycle internal combustion engine particularly adapted for use in an outboard motor. A supporting plate arrangement is used with the supporting plate extending across the driveshaft housing at its upper end. The engine is supported on the upper side of the supporting plate and an oil pan is supported on the underside of the supporting plate and depends into the driveshaft housing. The construction is such that the engine may be removed from the supporting plate without necessitating removal of the oil pan from the supporting plate so as to facilitate servicing. In addition, an oil drain is provided through the supporting plate at such a location so as to insure against leakage of the lubricant from the oil sump back into the engine regardless of whether the engine is in its normal running condition or its tilted up condition.

Abstract: An improved lubricating system for a two-cycle internal combustion engine having a vertically disposed crankshaft. In accordance with an embodiment of the invention, the crankshaft has a connecting rod journal that rotates in a crank chamber above which is positioned a lubricant chamber. A lubricant delivery passage extends through the crankshaft from the lubricant chamber and terminates in a connecting rod journal portion formed in the crank chamber.

Abstract: An improved lubricating system for a two-cycle outboard motor having a vertically extending crankshaft. The lubricating system employs a crankshaft driven pump and circulating system that permits pressure lubricating without necessitating elongation of the crankshaft or engine. The engine is enclosed within a cowling and an oil sump is conveniently located within the cowling and is accessible through a cover door of the cowling for replenishment of the oil supply without removal of the cowling.

Abstract: In an apparatus having a rotatable shaft supported by bearing members in a housing wherein said bearing members are suspended above an oil bath from which oil is splashed on said housing, an improvement for lubricating the bearing members comprising a method and means for admitting oil splashed from said bath on said housing through a wall of said housing to said shaft in the vicinity of said bearing members.

Abstract: A marine propulsion drive mounted to a boat transom includes a vertical drive shaft and a horizontal propeller shaft coupled by a pair of bevel gears in an oil filled lower housing unit. The vertical shaft is supported in vertically spaced bearings, one of which is immediately adjacent the upper wall of the bevel gear and the other of which is spaced upwardly therefrom. A shift member is selectably positioned through a shift linkage including a vertically extending shift rod which projects upwardly through an appropriate opening in the housing. A lateral passageway is provided immediately adjacent the upper bearing which extends laterally and downwardly to the shift passageway. An oil circulating passageway is formed having an inlet end in the upper wall of the lower housing adjacent to the upper face of the drive bevel gear and an outlet end terminating between the bearings.