Abstract: A strip of sheet metal stock, having a plurality of serially-arranged holes formed therein is provided for fastening of the strip to a top plate of a building structure. The strip, further, has pairs of tabs formed therein which can be pried up from the plane of the strip, and put into vertical dispositions, to receive a rafter or truss between the paired, and vertically-disposed tabs. Holes in the tabs provide for the fastening of the emplaced rafters or trusses to the tabs. The pairs of tabs are uniformly spaced apart from other pairs thereof a distance which obtains between rafters or trusses according to conventional construction codes. An indeterminate supply of the strip can be stored on, and payed out from, a reel.

Abstract: The tool is formed of a pair of planar webs which are spaced apart, in a parallel disposition, and are joined, along common sides thereof, in a spine. One of the webs has a diagonal cutting edge formed therealong, and the other thereof is integral with an apertured tab which extends therefrom in an obtuse angle. The web with the cutting edge further has an upturned lip which closes into proximate interface with the other web. Ends of strapping are slid into the tool, after having been enwrapped about a crate, box, stack of lumber, or the like. The tool can be crimped, to secure the strap ends therein, or the strapping can be crimped elsewhere, for or aft of the tool. When the strapped crate, box, or whatever, needs to be opened, one has only to insert a tire iron, rifle barrel, or the like, into the aperture of the tab and, bearing against the tool with the end thereof, pull the cutting edge across the strapping to sever the same.

Abstract: The invention is of a sleeve or cylinder, receivable on the muzzle end of a rifle or the like, which has at least one vibratory reed or finger projecting therefrom. As rounds exit the muzzle, gasses from the firing intrude between the bullets and the reed(s) or finger(s) causing vibration, uneven gas compression within the muzzle end of the weapon and against a given side of emerging bullets. As a consequence, the aimed accuracy of the bullets is slightly disturbed so that the bullets impact in a wider target zone than the otherwise precisioned accuracy of the weapon would indicate.

Abstract: A self protecting toggle latch assembly in which the latch handle nests in a narrow slot cut a part way through the extruded side member of the container. The slot interrupts a hole of circular cross section which is extruded throughout the length of the side member to form a hole on each side of the slot. The handle is pivotally retained in the side member by projections thereon which engage the holes formed in the side walls of the slot.

Abstract: A novel electrochemical cell including a solid electrolyte heated to an elevated temperature for operation and an integral cell electrode/heater for heating the electrolyte. Solid electrolyte embodiments are described. The integral electrode/heater is applied to a surface of the solid electrolyte and is resistively heated by an alternating electric current. A portion of the solid electrolyte may also be resistively heated. The described or comparable cells may be incorporated into an oxygen detector or similar apparatus where the apparatus is operated by alternately heating the cell and measuring the emf developed by the cell across its electrode.The invention is also, in part, a unique, solid electrolyte-integral cell electrode/heater configuration which provides a zone of uniform maximum heating at a predetermined location within the electrolyte and which, when used with a suitable resistive heating electric current, confines the current to the integral electrode/heater prolonging cell life.

Abstract: Apparatus for holding and facilitating the cutting of translucent sheet material into predetermined shapes. A transparent plate is placed over a plenum formed by a support frame. A plurality of suction holes are formed through the plate having an enlarged diameter at the upper surface of the plate. Grooves are formed part way through the plate for guiding a cutting instrument. Alignment marks are provided on the surface of the plate for registering printed information on the material with the plate.

Abstract: Plastically formable material, which may be formed under pressure into desired shapes, is fed while in a fluid or plastically formable condition to a pair of cooperating surfaces which are relatively movable into compressive relationship with material disposed therebetween. The face of at least one of such surfaces is patterned with a plurality of juxtapositioned geometrical impressions of desired size and shape so as to form a ribbon or sheet of uniformly sized and shaped particles from the plastically formable material supplied to the cooperating surfaces. The uniform particles are initially joined together by thin web or edge portions which maintain the continuity of the newly formed particles within a sheet form.

Abstract: In the embodiment shown, for exemplary purposes, the invention comprises a storing and dispensing container for hose, rope, wire and such filamentary material, formed of compliant, resilient platic. The container has an apertured base and an annular shell joined thereto, the end of the shell opposite the base having a plurality of limbs and webs. Each web has a tab-receiving slot formed therein latchingly to receive therein a tab formed in the end of a limb. Each of the limbs have the end tabs, and each thereof is received in slots provided therefor, to form a basket-weave-type of closure for the container.

Abstract: An explosive flechette launching system which includes a central core expive driver having stacked coaxially thereabout a plurality of disc plates which have layered and sandwiched therebetween for radial launching a multiplicity of flechettes. In one embodiment, the flechettes are oriented and pointed in a radial direction and each are provided with divergent tail piece which is releasably fitted into a mating recess in a driver piston abutting said explosive driver. The fin assembly is provided with a central bore and is slidably carried by the flechette body so that when disposed in said launching system, the fin assembly is positioned at the pointed end thereof and supported by wedge supports along the fins and intermediate the disc plates. The entire assembly is protectively encapsulated or covered with a thin membrane or skin. The explosive driver is designed to provide or generate a radial plane, high pressure wave for launching the flechettes.

Abstract: An explosive flechette launching system which includes a central core expive driver having stacked coaxially thereabout a plurality of disc plates which have layered and sandwiched therebetween for radial launching a multiplicity of flechettes. In one embodiment, the flechettes are oriented and pointed in a radial direction and each are provided with divergent tail piece which is releasably fitted into a mating recess in a driver piston abutting said explosive driver. The fin assembly is provided with a central bore and is slidably carried by the flechette body so that when disposed in said launching system, the fin assembly is positioned at the pointed end thereof and supported by wedge supports along the fins and intermediate the disc plates. The entire assembly is protectively encapsulated or covered with a thin membrane or skin. The explosive driver is designed to provide or generate a radial plane, high pressure wave for launching the flechettes.

Abstract: Dense fused cast product and fused grain product of material whose microstructure consists essentially of at least 70 volume % chrome-containing corundum solid solution crystal phase, at least about 5 volume % oxidic secondary crystal phases mainly comprising chrome-containing alkaline earth hexaluminate solid solution, and less than 10 volume % metal phase. Analytical composition of material, by weight, consists essentially of at least 90% Al.sub.2 O.sub.3 +Cr.sub.2 O.sub.3, 20-60% Cr.sub.2 O.sub.3, 1-4% MO where M is Ca, Ba, Sr, Mg, Fe and mixtures thereof, 0.4-3.5% CaO, BaO, SrO and mixtures thereof, not greater than 3% MgO, not greater than 3.5% FeO, <5% SiO.sub.2, up to 0.5% fluorine, <1.5% R.sub.2 O wherein R is Li, Na, K, Rb, Cs and mixtures thereof, up to 2% TiO.sub.2 and up to 3% ZrO.sub.2. Resistant to corrosion by soda-lime and borosilicate glasses. Notable electrical resistivity with SiO.sub.2 <1% by weight.

Abstract: Fused abrasive grain consists essentially of: (1) crystalline phases of corundum and zirconia, with an average crystallite size smaller than 300 microns and at least in part being an eutectic matrix and (2) analytically by weight, about 44 to 91% (preferably 44 to 80%) Al.sub.2 O.sub.3, about 5 to 50% (preferably 17.6 to 50%) ZrO.sub.2 to 0.1 to 12% (preferably 0.2 to 5%) R.sub.2 O.sub.3 wherein R is at least one metal selected from vanadium, chromium, manganese and cobalt, the percentage of R.sub.2 O.sub.3 is based on all R metal content calculated as R.sub.2 O.sub.3, and the balance, if any, being incidental impurities not exceeding 2%. The R metal content is present as oxide in solid solution within the corundum, as random particles of aluminate phase and/or as small particles of the R metal scattered throughout the grain, depending upon the relative oxidizing-reducing ambient conditions during melting.