Abstract: A woodworking apparatus comprises a support table having a flat, circular table surface, a first power driven cutting tool mounted below the table surface having a spindle adapted to project upwardly through an orifice in the center of the table surface, a second power driven cutting tool mounted off-center from the first cutting tool below the table surface and having a spindle adapted to project upwardly through an orifice in the table surface, a guide fence mounted above said table surface on a chord thereof, means for adjusting said guide fence relative to said cutting tools radially of the circular table surface between a position substantially central of the table surface diametral thereof to a retracted chordal position; and means for adjusting said guide fence angularly about the table surface, whereby the effective distance between the two cutting tools can be selectively adjusted by radial and angular adjustment of the said guide fence.

Abstract: A combined bending and cutting machine suitable for bending and cutting metal plate has a frame and a female bending die holder extending transversely across a lower part of the frame and supported thereby. The female die holder has a transversely extending upwardly-open recess for receiving a female bending die. A male bending die holder is mounted on the frame above the female die holder for vertical movement relative to the frame and female die holder, and a male bending die is mounted on a lower end of the male die holder. The male die holder is movable towards and away from the female die holder to bend a metal plate positioned between the male and female bending dies. A transversely extending clamping member above the female die holder is movable towards and away from the female die holder to clampingly engage a metal plate mounted on the female die holder.

Abstract: Apparatus for applying plastic film material to a glass sheet has a first roller mounted for rotation about its longitudinal axis and having a rubber-like surface and a diameter of at least about 30 inches (75 cm). A second roller is mounted for rotation about its longitudinal axis adjacent to the first roller to form a nip between the first and second rollers. A length of plastic film material having adhesive on one surface is supplied under controlled tension to the first roller at a position remote from the second roller, with the opposite surface of the film material in contact with the first roller, to cause the film material to pass around a substantial portion of the circumference of the first roller to a position adjacent the second roller. The glass sheet is fed through the nip to cause the second roller to press the glass sheet towards the first roller and cause the film material to be adhered to the glass sheet.

Abstract: A method of making a bun or like edible product produced from dough includes placing dough in a mold having an outer peripheral wall defining the outer periphery of a bun to be baked, a flat bottom wall extending inwardly from the outer peripheral wall, and an upstanding recess-forming member surrounded by the bottom wall. The recess-forming member has an inner peripheral wall extending upwardly from the bottom wall and a top extending across the top of the inner peripheral wall. The dough is baked in the mold to form a bun having a flat bottom surface with a recess, and the bun is then cut across a horizontal plane above the recess to provide an upper part and a lower part, the lower part is turned upside-down to position the recessed surface uppermost, edible filling material is placed in the recess, and the upper part is placed on the upside-down lower part to form a filled bun.

Abstract: A rotatable device is suspended in a melt of zinc and the device is rotated to draw a vortex in the melt. The device comprises a hollow cylinder having an open top and a closed bottom. An array of openings in the cylinder side wall is adapted to allow zinc melt to pass through. Nickel is added in particulate form into the vortex in the device. The openings in the cylindrical wall are adapted to retain the nickel particulates in the device to be washed with molten zinc until the particulates are substantially dissolved. The temperature is kept at a minimal value, i.e., no superheat is required to dissolve the nickel homogeneously throughout the zinc melt. After the nickel is dissolved, the nickel-zinc melt is solidified in zinc slabs. The zinc slabs containing nickel have narrow standard deviations from their specification.

Abstract: Monovalent ions, especially chloride and fluoride, but also thallium, sodium and potassium are efficiently removed from ZnSO.sub.4 electrolyte by electrodialysis. Monovalent anions are removed using alternating monovalent anion permselective membranes and cation exchange membranes. Monovalent anions and cations are removed using alternating monovalent anion and monovalent cation permselective membranes. Electrodialysis is carried out under turbulent conditions, at up to 60.degree. C., a differential membrane pressure of less than 150 kPa, a current density of 10 to 500 A/m.sup.2, and a pH of less than 5.5. Where both chloride and fluoride are removed a pH of 3.5 to 5.5 is maintained.

Abstract: A quadrupole mass spectrometer has a housing containing pole rods which define a passage through which ions can pass when the housing is evacuated. RF voltage is supplied to the pole rods to cause ions only of a predetermined mass/charge ratio to pass through the passage. Such ions are detected and their rate of receipt is inducted. The temperature of the RF supply is controlled to enable more consistent analytical results to be attained.

Abstract: A dart has a cavity extending rearwardly from a front end of the main body for a predetermined distance to an end wall, and a point assembly comprises a collar detachably securable to the front end of the main body, the collar having an axially-extending aperture extending therethrough, and a point comprising an elongated shaft with a pointed front end, the shaft extending through the collar and having a forwardly tapering portion at least in the region of the collar. The forwardly tapering shaft portion engages a rear end of the collar in a forward position of the point relative to the body to limit forward movement of the point relative to the body and permitting the body and collar to move forwardly relative to the point, when the point hits the target, to cause the cavity end wall to engage a rear end of the point shaft and drive the pointed front end into the target and to permit rotation of the body relative to the point about its longitudinal axis.

Abstract: A method and apparatus for anchoring rock bolts and cables in drill holes is disclosed. The method of the invention comprises mixing a dry aggregate-cement mixture with a limited, predetermined amount of water in a water fitting and blowing the wetted cementitious mixture through a delivery tube into a drill hole, in which an anchor cable or rock bolt has been inserted, resulting in the cable or bolt becoming permanently anchored in the drill hole. The use of a wetted dry cementitious mixture eliminates leakage of mixture from the drill hole and obviates the use of a plug, cover or collar plate.The equipement includes a pressurized, dry mix delivery vessel, a source of pressurized air, a water fitting for wetting dry mix with water and a delivery tube for delivery of the wetted dry mix into the drill hole.

Abstract: An illuminated awning assembly has a frame with an upright rear frame portion having upper and lower frame members and a pair of upright side members extending between respective opposite ends of the upper and lower frame members. A horizontal frame portion has a pair of horizontal side members extending forwardly from the respective junctions of the rear lower frame member and the upright side members, and a lower front frame member extending between front ends of the horizontal side members. A pair of further side frame members are on opposite sides of the frame, each extending from the junction of the lower front frame member and respective horizontal side frame member to the junction of the upper frame member and the respective upright side member.

Abstract: Cd and Te are purified by multiple-pass zone refining in the presence of a small amount of an added gettering substance chosen from Cd, Te and CdTe. In the purification of Cd, Te, or CdTe is added, the amount of Te or of Te in CdTe being less than the amount of Te in the Cd-rich eutectic composition between Cd and Te. In the purification of Te, Cd or CdTe is added, the amount of Cd or of Cd in CdTe being less than the amount of Cd in the Te-rich eutectic composition between Cd and Te. The Cd and Te so purified have an improved purity as witnessed by SSMS analyses, the increased ductility of the Cd and a much higher yield of the number of slices of CdHgTe produced with the refined Cd and Te meeting the specifications for carrier concentration and mobility.

Abstract: A sea rescue kit deployable from a helicopter includes a first self-inflating life raft, a second self-inflating life raft, a line connecting the first and second life rafts, and a device associated with the line to retard the line in the water relative to the life rafts to cause the life rafts and line to assume a substantially horseshoe-shaped configuration around a predetermined position in the sea after deployment from a helicopter upwind of the predetermined position.

Abstract: A process for the production of plastic foam material includes forming a liquid mixture by mixing an unsaturated resin, a catalyst operable to cause curing of the unsaturated resin, a promoter operable to activate the catalyst, a gas-releasing salt, and an acid operable to cause the release of gas from the salt so that the liquid mixture foams and cures by gelling and subsequent hardening. Included in the mixture is a volatile liquid gas-release control agent which volatilizes during curing to maintain gas release passages open in the foam and thereby permit release of gases from the foam during hardening after gellation at least until the foam is structurally stable.

Abstract: A locking wedge interposed between insulating material and masonry spaced from a wall structure for biasing the insulating material against the wall structure, said locking wedge having a generally U-shaped body with a pair of spaced-apart arms joined at one end by a web, said arms defining therebetween a tapered slot increasing in width towards the distal ends of the arms, said body being uniformly tapered in thickness at the said distal ends of the arms, and a plurality of equispaced transverse notches forming a serriform pattern on one face of the body substantially along the length of the arms for receiving a longitudinal rod in said notches.

Abstract: An air suspension system for tandem axles vehicles includes a pair of inboard, laterally-spaced air springs disposed within or below the vehicle frame each in communication with a separate reservoir compartment. The air springs are connected to a transverse tubular cross member at their upper ends, which may function as to the air reservoir compartments and are seated on the interior ends of transverse levers, each lever articulating on a floating walking beam. Each floating transverse lever may be pivotally connected at its outer end to the lower end of an outrigger bracket which is mounted at its upper end on the frame of the vehicle. A rubber spring preferably is interposed between the outer end of the transverse lever and the outrigger bracket.Upper torque rods interconnect the tandem axles and the vehicle frame, while lower torque rods interconnect the frame support bracket and the tandem axles.

Abstract: Instructional printing equipment for teaching the correct manner of printing letters and/or numerals includes a set of letters and/or numerals each formed as a block with at least one groove forming the configuration of a letter or numeral concerned. Each groove has a surface shaped to facilitate movement of a writing instrument along the groove in a preferred direction to be used when writing the letter or numeral concerned and to resist the movement of the writing instrument therealong in an opposite direction.

Abstract: A sign has a rigid peripheral frame extending around an opening lying in a plane, and a sheet of flexible sign material extends across the opening. The frame has an edge surrounding the opening, and the flexible sign material has a peripheral edge portion extending over the edge and rearwardly from the plane of the opening. A series of separate sheet tensioning devices is spaced around the frame rearwardly of the plane of the opening, each tensioning device comprising means for retaining the peripheral edge portion of the flexible sign material and means for adjusting the position of the retaining means relatively to the frame to cause the peripheral edge portion of the flexible sign material to be pulled rearwardly across the frame edge to tension the flexible sign material across the opening.

Abstract: A wallpaper trimming tool for cutting wall coverings on outer wall corners. The tool comprises a pair of rectangular blocks secured together with a pair of cutting blades spaced from an extension of one block by an intermediate sheet of shim material, cutting edges of said blades extending co-planar with the ends of the blocks.