Abstract: A workpiece such as a paper or a card is held in proper position in a typewriter having a paper scale for typing to the bottom of the workpiece without side slippage by the inventive workpiece holders. Each of the pair of holders mounts fixably, detachably, and slidably flush with the outer surface of the paper scale and has an inner member positioned when mounted such as to be parallel to the outer surface of the paper scale and at a suitable distance out and on each side of the workpiece for free movement of the workpiece between the member and the outer surface of the paper scale.

Abstract: A high coefficient of performance heat pump which extracts heat from or inputs heat into a liquid comprises a refrigerant compressor, a refrigerant, a plurality of refrigerant-fluid heat exchangers, two refrigerant expanders, two refrigerant check valves, a three way valve, refrigerant conduits, and liquid conduits connected in fluid tight communication. The apparatus can be employed to extract heat from or input heat into the earth, while heating or cooling air and/or water. An improved evaporator, refrigerant-liquid heat exchanger, component hook-up, and valve design are preferred embodiments.

Abstract: A quick detachable improvement upon scope mount systems having a front mount allowing swiveling in the horizontal plane is disclosed. The rear mount and base of such scope mount systems are modified. The concavoid inner surfaces of the latching means mate with the convexoid surface machined into the same side of the bottom portion of the rear mount around a bore traversing horizontally through the upper portion of the base when the rear mount is positioned into the zeroed position, the bore being positioned below where the upper flat surface of the base abuts the flat surface of the rear scope mount. The second latching member of the improvement is truncated on a plane parallel to the bore through the base, and preferably has a lever means integral therewith such as to permit quick release of the rear mount and detachment of the scope by swinging out so as to detach the front mount. The improvement is applicable to a number of popular scope mount systems on the market.

Abstract: The internal hydraulics of a three-point mount system of a tractor are utilized to drive stakes or posts. A base is rigidly mounted on the tractor chassis and rigidly braced to the stationary point of the three point. A frame having an upright member is rigidly mounted on the base and has a holding assembly with a latch or anvil for holding and urging a post or stake downwardly. The lever arms of the movable two points of the three point connect via pivot points, push levers, pivot points, pivot arms, and pivot points to the movable assembly such that upward movement of the two points effect levering of the assembly downward. The pivot arms are connected via centerized pivot points, and holding arms to the base.

Abstract: Uncontrolled fluid flow from an open cased well is closed off by (a) inserting a probe tool having an elongated lower cylindrical member slidably fitable inside the casing (the member having a seal circumscribing its diameter and a valve about its upper end) into the end of the casing such that the flow is shut off, (b) fastening the valve to the end of the casing, (c) withdrawing the probe, and (d) shutting off the valve.

Abstract: High molecular weight primary aliphatic alkanols are employed to enhance the energy content of animal basal diets. Alkanols having an even number of carbon atoms and having about 20 to about 32 carbon atoms per molecule are particularly advantageous to enhance the metabolic energy available in a ruminant diet.