Abstract: The archery arrowhead puller is particularly adapted for pulling broadheads as well as field points from buried positions in trees, tree stumps and the like without injury to the points. The device includes an elongated horizontal lever bar with a pair of hinged arms spaced along the length thereof and depending therefrom. The arms preferably are moveable between the hanging vertical position and a horizontal position and rotate in a plane along the longitudinal axis of the bar. One of the arms is a brace arm and is positioned at about the front of the bar while the other arm is a puller arm spaced rearwardly thereof. The brace arm has a pointed lower end preferably detachable from its remainder. Both the arms preferably have spaced transverse hinge holes in order to regulate their effective lengths. The bar preferably also has spaced transverse hinge holes and a slideable sleeve over the rear end thereof for extending the length of the bar for increased leverage.

Abstract: The multiple firing gun assembly includes a semi-automatic gun having a firing trigger and a frame including a trigger guard to which is connected a multiple firing trigger biasing device. The device includes a biasing spring contacting and biasing the trigger forward into the ready-to-fire resting position. A connector clamps or otherwise secures the spring in place within the trigger guard. Preferably, the biasing force exerted by the spring is changeable. The spring is either directly in front of or directly behind the trigger and bears against it to either pull it forward or push it forward. In one embodiment, the spring is in the form of a long wire, the upper end of which is positioned against the rear end of the trigger and the lower end of which is secured to a rotatable paddle carried by a trigger guard clamp. The paddle allows the biasing force to be varied. In another embodiment, a spring-biased plunger contacts the rear end of the trigger.

Abstract: The rest includes an arrow-holding support or blade, a transverse bar, one end of which is connected to the rear of the blade for holding the blade in the window, and a forwardly-rearwardly extending mounting block. The mounting block rear end slideably receives the opposite free end of the cross-bar which passes through it. An externally threaded sleeve is fixedly connected to the free end of the cross-bar and an internally threaded sleeve with turn knob is secured over the externally threaded sleeve for rotation therearound. A coiled spring is over the cross-bar between the mounting block and blade-receiving end of the cross-bar to bias the cross-bar away from the mounting block. When the knob is incrementally rotated, the cross-bar and blade travel incrementally laterally away from or toward the mounting block.

Abstract: The optical window is useful in laser-initiated explosive devices. It includes a solid transparent block of high temperature-resistant material such as glass, quartz, corundum, cubic zirconia or the like having two opposed light input and light output surfaces, one or both of which bear ablative mirror coatings of metal or the like, preferably aluminum, silver or gold, which can be vaporized by a laser beam. Preferably, the coatings are covered by a protective ablative film which resists scratching or the like. Such may be, for example, silicon monoxide. The coatings reflect incident light so as to prevent inadvertent initiation of explosive situated behind or downstream of the window in an explosive device. Preferably, the block is cylindrical with a curved light-focusing input surface which reduces the intensity which the laser beam trained through the window has to have in order to vaporize the mirror coatings and set off the explosive.

Abstract: The farrier's instrument includes a vertical rod, preferably with an elongated marking slot therein, a spaced pair of horizontal plates slideably connected to the vertical rod through the slot and lockable in place, and a rear rod, the upper end of which is pivotably connected to the upper end of the vertical rod, and which extends downwardly and rearwardly therefrom at an acute angle. The upper end of the rear rod is expanded and defines a slot in which a pointer connected to the upper end of the vertical rod extends for marking the exact angle between the two rods, by reference to indicia lining the slot. Preferably the pointer acts as a limit bar, and a spring is connected to the rear rod for biasing it toward the vertical rod. The plates may include indicia to measure the medial/lateral assymmetry of a horse's hoof.

Abstract: The explosive initiator features an angled fiber optic adapter connected thereto. The initiator includes an elongated tubular cartridge with a longitudinal passageway having input and output ends and an explosive disposed therein downstream of a transparent sealing window and upstream of an output closure. The adapter has an elongated passageway therethrough with input and output ends and divided into a first portion at an angle of preferably 90 degrees from the longitudinal axis of the cartridge and a second portion in line with the cartridge. A mirror lens is positioned in the adapter passageway at the intersection of the two portions for reflecting a light beam from an optical fiber in the inlet end of the adapter to the cartridge passageway and focusing the light beam on the window. Preferably the second portion of the adapter is rotatably mounted to the cartridge.

Abstract: A getter electrode is provided to prevent dendrite formation and growth in electrochemical cells having alkali metal anodes such as lithium. The getter electrode includes a relatively thin, for example, about 2 mil thick layer of active material selected from the group consisting of carbon, graphite and mixtures thereof disposed on an inert substrate such as glass fiber separator paper. The getter electrode is positioned between the anode and the cathode in the cell and is separated from the anode and cathode by separators of fiberglass paper or the like. The getter electrode functions as a cathode with low rate capabilities. When dendrites arrive at the getter electrode from the anode or cathode, they are immediately discharged and not allowed to grow beyond the getter electrode. The result is a dramatic improvement in the cell cycle life and capacity retention.

Abstract: The improved focusing mirror lens reduces the ellipticity of the output beam of a laser diode or the like light source and corrects astigmatism of the beam so that beam light can be focused to a fine point. The lens has a monolithic, transparent, preferably cylindrical lens body of glass or the like, upon the opposite entrance and exit ends of which are coated focusing mirrors. At least one of the mirrors, and preferably both, has the configuration of a segment of a circular cylinder. The other mirror may have the configuration of a segment of a circular cylinder or of a sphere. The axes of the mirrors, when both are segments of a cylinder, are perpendicular to each other. Each of the mirrors has a light-transmitting unmirrored pupil aligned along the longitudinal axis of the lens body.

Abstract: The license plate cover prevents viewing of the license plate identifying numbers and symbols from the sides of the plate, but does not prevent viewing thereof from directly in line with the plate. The cover includes a frame adapted to overlie the plate and defining a central opening through which the plate numbers can be seen. To the frame are connected a number of spaced vanes which project outwardly thereof and obscure side viewing of the plate numbers. For this purpose, it is preferred to have the vanes parallel with each other and running from the top to the bottom of the frame across the opening, and perpendicular to the main plane of the frame. The vanes can be opaque or transparent. In the latter case, the collective effect of side viewing through the array of vanes is to obscure such viewing.

Abstract: The archery bow assembly includes an archery bow having a pair of limbs connected to a central riser handle defining an arrow window and interconnected by a bowstring. It also includes a pendulum-type disappearing arrow rest with a side pressure point. The rest includes a pair of generally flat, forwardly extending, flexible, resilient inner and outer blades. The inner blade lies next to the sidewall of the arrow window and includes a front support adapted to project through a notch in the outer blade to support an arrow when the inner blade is biased outwardly. The outer blade serves as a side pressure plate and may have a single pressure point. The rear ends of the blades are connected to a transverse bar slideably or threadably received in the rear end of a mounting block connected to the sidewall of the riser opposite the window and extending rearwardly thereof. A pin is slideably disposed in a hollow tube passing transversely through the riser into communication with the window.

Abstract: The improved rasping device can be either a rasp or file and includes an elongated blade with a plurality of rasping protrusions on the middle portion thereof and with an integral narrow tang extending rearwardly thereof along the longitudinal midline thereof. The tang extends into the closed front end of a hollow shell defining a central cavity and is sealed thereto. The shell has an open rear end. A generally cylindrical externally threaded pinch tube grips the rear end of the tang, which is wedgingly received in a transverse slot in the front end of the pinch tube. The slot may be lined with teeth or the like to increase the grip on the tang, and the tang can be partially pinned thereto. The shell and pinch tube define with a rear cap the handle of the device and can be of metal, plastic or the like.

Abstract: Method of making a flexible metal halide, specifically CuCl.sub.2, positive electrode for a lithium/sulfur dioxide rechargeable electrochemical cell. CuCl.sub.2 is mixed with graphite and a binder such as TFE. Methylene chloride or 1,1,2 trichlorotrifluoroethane is added to form a slurry. The slurry is pasted onto an inert, electrically-conductive, screen-like substrate. The slurry is dried and then heated to cure the TFE. The resulting electrode structure is pressed between rollers to reduce its thickness.

Abstract: The novel optical explosive initiator employs a window of a new type. The window hermetically seals the initiator explosive and is a transparent preferably monolithic block or cylinder of glass or the like solid material having a mirrored convex entrance end in the configuration of a segment of a spheroid, paraboloid, ellipsoid or hyperboloid and having an unmirrored opening therethrough along the longitudinal axis of the cylinder. The opposite exit end of the cylinder is mirrored and is perpendicular to the cylinder longitudinal axis and is at least nearly flat, preferably entirely flat. It includes an unmirrored opening along the longitudinal axis of the cylinder. An optical fiber transmitting light, such a laser light, can be positioned adjacent to the entrance opening.

Abstract: The method seals optical windows in explosive initiators so that the resulting seal remains undamaged by exposure to about - 320.degree.-840.degree. F. and pressures up to 26000 psi. The method includes disposing a solid body optical window of quartz or silica glass or the like in a passageway in a wall of an explosive initiator body of metal, ceramic or the like. The optical window is dimensioned relative to the passageway so that an annular space is provided between the outer periphery of the optical window and the passageway wall. This annular space is filled with solder glass, in powdered or solid body or slurry form. Preferably, the solder glass is a ring which closely fits around the optical window. The resulting sub-assembly preferably abuts a shelf in the passageway formed between two contiguous portions of the passageway with different diameters, the sub-assembly being in the larger portion.

Abstract: The archery device permits an archery arrow to be correctly centered along is length with respect to the bowstring so that upon release of the bowstring the arrow will fire straight ahead with improved accuracy. The device includes an elongated arm which is either L-shaped or U-shaped, a connector for releasably securing the arm to the sidewall of an archery bow and an aligning component. The aligning component enables one to mark the transverse position of the bowstring and then position the front of an arrow, when the rear of the arrow is attached to the bowstring, at the same transverse position as the bowstring so that the arrow is aligned with the bowstring and parallel to the sidewall of the archery bow. The connector allows the arm to be rotated therearound in a plane parallel to the sidewall of the bow and can include a threaded post.

Abstract: The animal call holder and at least one flat animal call device form the assembly. The holder includes a container having a bottom portion formed of a flat closed bottom, and integral upraised sides, rear and front sloped upwardly rearwardly and defining a lower storage space therewith. The bottom portion may have a pocket clip attached thereto and/or loops and a neck lanyard. The container also has an openable lid hinged to the bottom portion. The lid may be flat or may include a closed flat top and integral closed depending sides, front and rear sloped downwardly forwardly and adapted to rest on the upper edges of the bottom portion and which define an upper storage space. The top may be vapor permeable but water resistant in order to dry out wet animal call devices in the holder. The top inside may bear strips upon which indicia identifying the call devices can be marked.

Abstract: The strain relief device is used in combination with a metal electronic cable-connector assembly for high temperature applications and high mechanical shock application. The strain relief shrouds and protects the weld or braze between the cable and connector and also extends over a length of the cable to brace it from bending stress ad strain. The strain relief is generally hollow and tubular, an expanded end thereof being slip fitted over and/or welded to or threaded into an end of the connector and caused to extend over the cable-connector weld or braze, with a narrow end of the strain relief forming a lip surrounding the cable distal of the weld or braze to brace it. Thus, the cable and described connector end fit into the central longitudinal passageway in the strain relief and are enclosed by it. The strain relief can be in a form such that its central portion extends through a bulkhead and can be locked thereto.

Abstract: The disappearing archery arrow guide is used with archery bows containing overdraw shelves although it is also applicable to conventional non-overdraw shelves, as well, with arrow rests in the normal position. The guide includes a pair of upraised tines, preferably joined by a lower horizontal bar to form a U-shaped configuration. The bar is in turn connected to the upstanding collars of a bracket having a flat horizontal plate which is connectable to the upper surface of an archery bow shelf. The bracket is provided with a spring, such as a coiled spring, for biasing the tines into the flat position. The tines are spaced laterally from each other a distance sufficient to allow free passage of the shaft of an archery arrow therebetween but insufficient to permit the free passage of the broadhead of a hunting arrow.