Abstract: A short circuit protection system is disclosed in which a trip-free circuit breaker is combined with at least one current limiting fuse whereby to provide full range short circuit clearing capacity in voltage ranges in which full range fuses are not available or economical.

Abstract: A selective imprinting machine of the type used for addressing mailed material, utilizing embossed card-sized media of the "credit-card" type having a matrix of perforations sensed for comparison against the master. The master is another perforated card with the perforations on both cards photoelectrically sensed. In one embodiment the cards move along a linear path, and in another they are carried on a rotating drum which also bears the master card. The media are placed on the drum by a rocker arm actuated by a cam driven by the drum, scanned simultaneously with the master for comparison and ejected tangentially from the drum to a receiver. A print signal is produced until inhibited by mismatch between the master and the individual embossed media. The elected media are imprinted against a receiving medium such as an envelope by a print roller, at the periphery of the drum, urged toward the periphery by a cam driven by the drum.

Abstract: A repository for holding and storing fissile or other hazardous materials either under or above the ground is provided by enclosing one or more inner containers, such as standard steel drums, in a larger, corrosion-resistant outer shell, with a layer of foamed polyurethane occupying the space therebetween. The polyurethane foam is free of voids at its interfaces with the inner container and outer shell, and adheres to and reinforces same to provide a stress skin structure. Protection is afforded by the chemical and physical characteristics of the polyurethane foam against destructive influences such as water vapor intrusion, package leakage and damaging effects of the environment, such as freezing, electrolysis, chemical and bacterial action. The outer shell is shaped to conform generally to the shape of the inner container and is made of a tube of bituminized fibre material with endcaps of exterior grade plywood treated with wood preservative.

Abstract: A spherical system for the concentration and extraction of solar energy includes a boiler fitted with a heat transfer fluid such as liquid sodium and connectable to means for converting heat energy to electrical energy such as a magneto-hydrodynamic generator. The boiler is surrounded by a concentrically spaced spherical shell having a plurality of aplanatic lenses set into the shell in such manner as to receive and collect the sun's rays onto the boiler. Apparatus is provided for cleaning the exterior of the shell and lenses to facilitate the passage of radiant energy therethrough, this means being shown as comprising a pair of circular conduits supported in concentrically spaced relation to the shell upon carriages movable along a circular trackway so the conduits can rotate around the vertical axis of the shell.

Abstract: A marine vessel with a spherical rolling hull having a rotatably mounted shaft disposed through the horizontal poles of the sphere. A frame assembly is rigidly fixed to the shaft on the interior of the sphere for carrying a propulsion apparatus and cargo. The propulsion apparatus operates to turn wheels supporting the frame assembly and running upon a pair of annular tracks on the sphere's interior surface so as to cause the sphere to rotate. This rotational effect propells the vessel by means of fins or paddles on the outer surface of the sphere. Air propellers, elevators, and rudders to assist in navigation are mounted on the exterior of a pair of elongated cabins which are detachably connected to the shaft's terminals at the sides of the hull. Cargo and passengers are carried by these cabins which also can serve as independently powered, seaworthy marine vessels when detached from the mother ship. To expedite the handling of cargo, elevators are provided in the undercarriage of each cabin.