Abstract: Disclosed is a method for detecting propagating normal zones in a superconducting coil or magnet by monitoring the energy consumed by the magnet/coil per unit time and comparing that value with a previously recorded or stored value of energy consumed per unit time. The monitoring is done outside the cryostat and external quench detection circuitry configurations are disclosed for carrying out the method.

Abstract: A superconducting magnet arrangement having a sealed cryogenic environment utilizing liquid helium, a superconducting coil immersed in the liquid helium, a constant current power supply exterior of the cryogenic environment and connected to the coil by leads cooled by varying helium boil off and an electrical shunt connect across the magnet. Variations in the helium boil off are compensated by exposing the shunt to and cooling it by the same helium boil off or by exposing negative temperature coefficient device to such flow or by a combination of such methods.

Abstract: This invention is an electronic device for detecting, remote indicating, and accumulation of multiple penetrations of a target by conductive shafts such as hand-thrown darts, metal-tipped arrows, or similar missiles. The device utilizes a target comprised of layers of conducting foam pads separated by thin insulating layers. When these foam pads are penetrated by a conducting shaft, they activate an electronic logic system which displays to the player the score that his dart has made on the target.

Abstract: A process and apparatus to lift, transfer and position penetrable stock such as resin, fabric, and filled or laminated material by impalement. One or more spearhead elements are driven through the penetrable material. The spears are turned axially and lifted to lift the penetrable material with the spears and present it to a work surface whereupon the spear is again turned or rotated, aligning the barbs or flukes so that a stripper plate easily strips the stock from the spearheads and onto a suitable work surface such as a die. The apparatus comprises one or more quills and each supports a harpoon-like spearhead in an adjustable support. A stripper plate in clearance relation with respect to the flukes of the spearhead is movable independently of the spearhead so that when the spearhead mimicks its entry postion, the stripper plate moves in the direction of the spearhead and forces the penetrable stock off of the harpoon points or spearheads and onto a work surface.