Abstract: Anchor apparatus for use in various seabed conditions includes a fluke to which is secured a pair of shanks, a main shank and a retrieval shank, and a wedge having a cutting edge is secured between the fluke and the main shank. A burying plate with cutting edges is removably secured to the fluke. At the outer edge of the burying plate, remote from the fluke, there is a float to help insure that the anchor apparatus remains in an upward or predetermined orientation as it moves downwardly through the water and sets in the seabed. A handle may be secured to the burying plate to help in the manual operation of the anchor apparatus or in the movement of the burying plate as it is removed from the fluke. The anchor apparatus includes two shanks, a main shank and a retrieval shank. Anchor line or chain is secured to the retrieval shank.

Abstract: Disclosed herein is an engine having opposed cylinders with a guided rotary and reciprocating piston which telescopes over an output shaft and transmits rotary motion directly to the output shaft without the need for a crankshaft. Guided rotary movement of the piston is afforded by rollers rotatably supported on a radial pin on the cylindrical wall of the piston. The rollers travel in an elliptical type groove on the inside surface of the cylinder to impart rotary motion to the piston as a result of rectilinear motion of the piston caused by combustion of fuel in the working chambers on opposite sides of the piston. The engine can also be operated by an external source of pressurized gas or operated as a pump. The rotary motion is transmitted to the output shaft by a rider block which has a square cross section and which is fixed to the output shaft and is complementary in shape to a square opening in the piston. The rider block is movable between end walls in the piston.