An otto-cycle internal combustion engine having at least one cylinder, a piston reciprocable in the cylinder, an inlet valve for admitting air into the cylinder for compression by the piston, a combustion chamber externally of the cylinder, fuel injector means for injecting fuel into the combustion chamber, transfer passage means communicating the combustion chamber with the cylinder and ignition means for igniting a fuel/air mixture in the combustion chamber, the arrangement being such that com...

An internal grinding machine having a tool mounted only for transverse feeding movement with a workholder mounted for movement toward and away from the tool to feed the work into and out of grinding position. The workpieces are automatically loaded into the workholder in a retracted position from feed structure mounted on the base of the machine.

An internal combustion turbine comprising a stator with at least one peripheral combustion chamber and a rotor with peripherally mounted and internally extending driving blades or vanes and air compression blades arranged respectively in two transversely offset arrays of one or more groups in line, the two offset arrays being interiorly separated by a center web. The rotor is mounted for rotation in the stator and as it turns the air compression blades and the driving blades sequentially pass un...

Modification of a twin opposed cylinder two-stroke internal combustion engine according to U.S. Pat. No. 3,329,134 issued in 1967 to the present inventor, which engine has a power piston reciprocating in opposed aligned power cylinders, and an effectively integral charge piston reciprocating within aligned charge cylinders, axes of the reciprocations intersecting and being perpendicular. There are no connecting rods, the power piston is journaled on a central crankpin of a crankshaft, and the ef...

A muffler for a single cylinder engine comprises a shallow, elongated shell having a rear wall with an inlet port near one end of the shell and a front wall with an outlet port. A baffle plate clamped between the shell members divides the shell interior into front and rear compartments, communicated through spaced apart openings in the baffle plate. A front baffle member subdivides the front compartment into two communicated chambers, from one of which the outlet port opens and the other of whic...

A rotary internal combustion engine having a plurality of swinging arms spaced uniformly in a rotor housing and a rotor on a power output shaft adapted to engage the arms in said housing and thereby control the cycle of outward compression and exhaust strokes, and inward power strokes of each of said arms. Each arm includes an outwardly tapered, wedge-shaped horn member engageable within a recess provided in the adjacent engine housing to define an expandable compression chamber between said hou...

An internal combustion engine, either two-stroke or four-stroke, having sealed lubricant chambers at the locations of at least the crankshaft and the crankpin and/or the gudgeon pin. Where practical, certain bearing surfaces of the engine may comprise dry lubricating material.

An internal combustion engine including a cylinder head having a passage positioned therein adapted to communicate with a combustion chamber and adapted to carry either a fuel-air mixture or products of combustion. The passage has first and second portions positioned at an angle to one another that are formed by a pair of retractable dies during a casting process thereby leaving a sharp discontinuity. A valve seat insert is positioned in one portion of the passage and it includes a lip having an...

An impact tool for peening the interior wall of a bore, wherein a sleeve has rows of axially staggered holes through which peening arms project, the arms being carried by a central rod reciprocable in the sleeve and spring biased in a direction to retract the arms, impact being applied to the rod and acting to project the arms through the holes into engagement with a bore wall. The sleeve has a collar for limiting the extent of insertion of the tool into a bore, and a handle is provided to enabl...

The disclosure consists of an improvement in an internal combustion engine wherein the piston comprises a disc or circular plate having an annular skirt integral therewith extending upwardly and being spaced from the peripheral edges of the disc and reciprocating in an enclosed cylinder wherein the upper head of the cylinder comprises a downwardly extending circular projection, and means in said cylinder, exteriorly of said annular skirt adapted to cause combustion of blowby gases.