Abstract: A crystalline array wherein selected segments thereof can be selectively energized from a primary state to a secondary state; selectively de-energized from the secondary state back to the primary state; and selectively probed to determine whether the sector selected is in the primary or secondary state. The device is capable of being utilized as a switching device.

Abstract: Structure for maintaining and controlling qualitative and quantitative parameters of brewing, particularly related to coffee.

Abstract: A process of identifying and cleaning carbide entities. In the preferred embodiment of this invention, a visual indicating reacting composition is placed in a tank. An example of such a compound is a weak solution on the order to magnitude of one tenth molar or less of copper sulfate. After preparation of this bath, a large plurality of used tungsten carbide tools are dumped into the bath. Tools are allowed to sit in the bath for periods extending from five seconds to several hours depending on the strength of the bath and the thickness of the coating. When a characteristic orange color appears on a significant plurality of the tools sitting in the bath, the tank is drained of the copper sulfate solution and the tools are dumped upon a flat surface for visual inspection and segregation of the copper colored tools from the clear ones. After segregation, the copper colored tools are placed in a second bath.

Abstract: A safety jacket avoid to protect the batter, particularly a child, from injury to back portions of the body, particularly rib, spinal and kidney injuries.

Abstract: Apparatus for marking eggs comprising parallel upstanding brace members fixed to a horizontal base; a rotatable element rotating in one of said brace members and operable to engage one end of an egg; another member yieldably urged against another end of the egg and operable to allow rotation of the egg with respect to the end of that member; a disc member fixed to said rotatable member; apertures near the peripheral edge of the disc member operable to pass over a corresponding aperture in said first brace member; a pin operable to pass through one of the apertures in said disc member therethrough into said corresponding aperture in said first brace member; a metal straight edge guide above and substantially parallel to the axis of the egg and substantially rigid; a sliding member operable to slide on said straight edge member along a line parallel to the central axis of the egg; an aperture vertically deposed in said slide member operable to hold a pencil; and a weight member having a central axis and an aper