Abstract: A high chamber pressure piston having the barrel relatively close vertically to the grip to reduce muzzle flip. The hammer and related components are in the bolt above the barrel, the bolt cover with sights do not move during firing, an ambidextrious bolt hold open and release assembly selectively holds the bolt in rearward position and the trigger mechanism has safety features to prevent misfiring and multiple firing.

Abstract: A folding knife with positive lock for maintaining the knife blade selectively within the handle case and in open position. A spring urged foot engages appropriate locking notches on the blade for open and closed positions to render the blade immobile in either position. A thumb actuated rocker (several embodiments are disclosed) releases the foot from contact with the notch and out of the path of blade rotation. In an alternate form a pull ring may be used as the lock release. A positive stop on the knife blade abuts the handle case when the blade is in closed position to facilitate movement to its open position when the foot has been removed from the closed locking notch.

Abstract: A lock and gas operating system for a weapon wherein propellant gas is trapped in an expansion chamber and then released by an actuator valve. The primary-secondary mass relationship in prior art devices is eliminated in this system which has no secondary mass. A reduction in weight and an increased cyclic rate are principle advantages.

Abstract: A plurality of interlocked elements with loop portions on the ends of one element engaging intermediate portions of another element. A game piece with a part too large to pass through the loops has a tongue with spaced sides that may be passed through, up and over certain loops and straddle element portions in manuevering the game piece into and out of engagement with selected elements in a predetermined sequence.

Abstract: A water sample retriever for sampling water at a predetermined depth below the water surface comprising a covered container, a rigid longitudinal member for placing the container at said predetermined depth, and a vertical movable lift for removing the cover to admit water into the container for conveyance to the surface for testing.

Abstract: A shipping, storing and displaying table that is collapsible for return and which is inexpensive for discard if desired. The table consists of a plurality of vertically spaced shelves supported by their edges held between lips of supports or posts at their midsections. The posts have feet extending below the lower shelf or pallet base to provide forklift access from all four sides. The posts and shelves are held together by connecting bands of suitable fasteners such as nails or screws, all of which are readily removable for collapsing the table.

Abstract: A drawbar for pulling a cultipacker for compacting loose earth. The drawbar has a main pulling beam for attachment at a forward end to a plow being drawn by a tractor and at a rearward end to the cultipacker. The drawbar includes an extendible arm connected at one end to the plow and pivotally connected at it's opposite end to the main pulling beam and an extendible leg pivotally connected between the extendible arm and the main pulling beam adjacent it's rearward end thereof.

Abstract: A circular flourescent tube light fixture for a ceiling fan, particularly one suspended from a low ceiling. The light holder is adjustable upward when a deep concave light reflector is used and is adjustable downward when a flat light shield is used. The holder fits around a tubular housing that mounts on the lower center end of the ceiling fan mechanism. Within this housing is the transformer, starter, and wiring that extends between the ceiling fan motor and the flourescent tube light. A friction spring fits between the light holder and tubular housing to retain the holder in upward position when a deep concave light reflector is used. It also prevents rotation of the holder relative to the housing as an electrical safety measure since electrical wiring extends between them. In one embodiment the light reflector is fastened to the base of the tubular housing and in another it is attached to the holder and moves vertically with the tube light.

Abstract: A lifting device for lifting automobiles and similar loads wherein substantially equal loads are applied to both sides of the load and wherein an additional force is applied to the heavier side when the load is unevenly distributed. All power and compensating lines are connected over the load, leaving the area under the load free and available for auxiliary equipment.

Abstract: A spare tire locking device comprising a lug nut cover and locking base plate for concealing lug nuts which retain a spare tire and wheel on its mounting, thus preventing unauthorized removal of the spare tire and wheel.

Abstract: This invention relates to a portable motorcycle stand and lift which permits a single operator to lift a motorcycle unassisted. After actuating a hoisting means to lift the motorcycle to its desired height, pins are used as locking means to immobilize the relatively movable frame members.

Abstract: A shoring beam storage rack comprising an upper extrusion shoring bracket for encasing one end of a shoring beam and a lower extruded locking tongue receiving the extensible portion of the other end of the shoring beam, for storing and locking the shoring beam in a vertical position at the rear end of a transportation vehicle.

Abstract: A cylinder driven reciprocator uses a block and tackle output to broaden the mechanical range of the cylinder. The output force, speed, and travel distance depends upon the number of moveable pulleys between a fixed reference point and the output attachment on the cable.