Abstract: A knockout structure is provided for selectively forming openings for either one of two different sizes of conduit. The center of the inner knockout is offset from the center of the outer knockout, creating an eccentric relationship which permits a positive ground to be established between the smaller conduit and the box wall by a standard lock washer when the smaller conduit is mounted therein. A secure mechanical connection is similarly established.

Abstract: An ignition system for providing individual cylinder spark control includes a shaft encoder driven by the engine crankshaft which provides a primary timing pulse at the top dead center point of cylinder No. 1 as well as a large number of encoder pulses per engine revolution. With the primary timing pulse as a reference, the encoder pulses are supplied to a modulo N counter which provides output pulses at the theoretical top dead center point of each cylinder, to a cylinder address counter and to a fixed delay counter, which provides an output a fixed number of encoder pulses from the previous output pulse from the modulo N counter to set a maximum ignition advance point. A memory device has a channel programmed with information as to the variation, in terms of encoder pulses (crank angle) of each cylinder actual top dead center from the theoretical angle as defined by the modulo N counter output.

Abstract: Transfer sheets are provided which include a polyethylene imine as a blocking agent and which are useful in the heat transfer dye printing of various materials such as textiles. The polyethylene imine is capable of completely or partially blocking the transfer of sublimable dyes which have been imprinted on the transfer sheet while having no effect on other dyes which also have been imprinted on the transfer sheet. By using such transfer sheets, designs can be printed which are not otherwise obtainable by conventional techniques. The invention further concerns the method of making such sheets, their use in the printing of various materials, and the materials which have been so printed.

Abstract: A molded, thermoplastic outlet box is provided with openings near the back wall and clamp arrangements inside the openings. Each clamp arrangement includes a swingable clamp arm having teeth at the end thereof which cooperate with teeth formed on an inner wall of the box to engage a cable which has been inserted. An abutment prevents the clamp arm from swinging inwardly until a predetermined force has been exceeded. Flexibility of the arm is enhanced by parallel slots extending away from the opening on opposite sides of the clamp arm.

Abstract: The method and product, for forming ordnance shells such as mortar shells and other explosive projectiles wherein the fragmenation count or shattering of the shell upon explosion is greatly increased over standard shells produced in a conventional manner.The method includes special heat treatment of the shell or projectile during initial stages of its formation whereby the molecular structure of steel used is changed principally from lamellar to spheroidal.

Abstract: This invention concerns transfer sheets which include a blocking agent and which are useful in the heat transfer dye printing of various materials such as textiles. The blocking agent is capable of chemically reacting with and thereby completely or partially blocking the transfer of heat transfer dyes which have been previously imprinted or coated on the transfer sheets. By using such transfer sheets, designs can be printed which are not otherwise obtainable by conventional techniques. The invention further concerns the method of making such sheets, their use in the printing of various materials, and the materials which have been so printed.