Abstract: This invention discloses an automatic pivot pin installation apparatus. It mainly consists of two up and down air-cylinders on different sides of a table base. The upper cylinder puts the steel wire into the position of the mold and a cutter driven by the back side cylinder cuts the wire. Pieces of wires then are pressed down to prearranged installation position of the pivot pin. Then the pins are pushed simultaneously into the pin holes of the object fixed at the central mold of the structure base by means of the lower cylinders of each side.

Abstract: A window frame assembly for curved windows comprises a rigid frame member having a curved profile, a flexible frame member, and a plurality of individual window frame core blocks. The blocks are secured serially to the flexible frame member. The blocks and flexible frame member form a subassembly which is secured to the rigid frame member such that the subassembly assumes the curved profile of the rigid frame member. The blocks are preferably wood, the rigid frame member preferably an aluminum clad frame cover, and the assembly preferably provides an aluminum clad, wood core window frame assembly.

Abstract: A plural-chambered, gravity-activated dispensing device that incrementally dispenses two or more flowable products at a substantially constant, predetermined ratio. In one preferred embodiment of the present invention, an inner container is positioned within an outer container, each container defining a chamber adapted to contain a flowable product, and having a discharge opening therein. An empty third container is sized and positioned within the inner container to impose on the inner chamber's pouring characteristics an effect similar to that imposed on the outer chamber's pouring characteristics by the inner container to thereby achieve a substantially constant dispensing ratio between the pourable products dispensed therefrom. In another particularly preferred embodiment, the effect of the third empty container mentioned above is superimposed on the inner container's shape and position within the outer container, thereby eliminating the third empty container.

Abstract: An integrated factory system affords precision machining and inspection of aircraft turbine blades, as well as other metal parts having two generally opposite principal surfaces. It uses only two stages of chucking by the meltable matrix method. After embedding one of the surfaces in the first chuck, which positions the blank relative to a plane of reference, the other surface is machined and inspected according to programs relative to that plane. Without release from the first chuck, the part is transferred to a second chuck for embedding the machined principal surface relative to a second parallel plane of reference a precise distance from that of the first chuck. Machining and inspection is now completed relative to this second plane of reference.Improved matrix chucks are provided, as well as new chucking apparatus which establishes the planes of reference.

Abstract: This invention relates to a process for producing a solid state battery successively comprising, superposed between two metallic contact elements, a layer or thin film of an alkali metal such as lithium, constituting a source of ions, a layer or thin film of a superionic solid electrolyte and a layer or thin film of a layered intercalation compound capable of inserting ions issued from the alkali metal film. The lamellae of the film of layered compound are oriented so that their c-axis is substantially parallel to the surface of the solid electrolyte. The process consists essentially in making the layer or thin film of layered compound by direct grafting on the film which is to serve as substrate therefor, on which is initially impressed a grating which conditions the nucleation starting the crystal growth by means of the techniques of molecular beam deposition. The invention also relates to a battery made in accordance with this process.

Abstract: Machine for providing by crimping the ends of cable conductors with end sleeves or other connection elements comprising a contact sleeve opened or closed in the envelope thereof, particularly a crimp sleeve. The machine comprises a device for feeding the end sleeves, a device for supplying the cable conductors and a crimping device cooperating with the sleeve feeding device. The crimping device is provided with a grip having jaws for the crimping of the metal tube of the end-sleeve or the contact sleeve of the connection element on the metal web of the conductor from the end of which the insulation has been removed; jaws are used to take out the synthetic collar from the end sleeve or from a portion of the connection element.

Abstract: The invention is a tool to aid in the attaching of coaxial electrical cable ends to a half of a coaxial cable connector assembly. In detail, the tool comprises a wrench to prevent rotation between the connector halves when the connector halves are joined. A shaft is included having a threaded end for coupling to the recess of the other connector half. Finally, a drive preferably in the form of a portable electrical drill, is used to rotate the drive. Thus, with the joined connector halves installed in the wrench, so that rotation therebetween is prevented, the shaft can be threaded into the other connector half and thereafter coupled to the drill. The connector half to which the coaxial cable is to be joined is aligned with the prepared cable end and fed into the threaded recess as the wrench and joined connector halves are rotated.

Abstract: A holder for pads on which dummy connector mates are fixed includes a U-shaped bracket arrangement grooved to receive the pads. Once the selected pad is in position threaded fasteners are extended into the edge cutouts in the pad to fix the pad in the holder.

Abstract: An apparatus making it possible to fit retaining pins on a mandrel. The retaining pin arrives in the form of a continuous wire which is cut to the desired length by a wheel before being fitted in the mandrel. The end of the uncut retaining pin adjacent to the wheel is maintained in a gripper formed by two jaws. Simultaneously with the fitting of the cut retaining pin, a hole is made in the mandrel to permit the subsequent fitting of a retaining pin.

Abstract: A pick-and-put tool, new-nut hopper and pin-insertion/torque tool for completing the installation of the new split-pin assembly in a lower guide tube under water after the old split-pin assembly has been severed into fragments. One fragment, located in the upper counterbore of the LGT, includes a portion of the old nut and the portion of the pin on which it is threaded. The pick-and-put tool includes a clamp and hydraulic cylinders for moving the clamp between a home position and an advanced position and for pivoting the clamp in each position. There is also a cylinder for raising or lowering the clamp in each position. The pick-and-put tool has stops which stop the movement of the clamp precisely in the home position or the advanced position and in their pivoted positions. The pick-and-put tool is mounted in the pool such that it can properly align with both the LGT and hopper. The clamp is first moved from the home position to the advanced position.

Abstract: An enclosure for electronics, particularly adapted for implantation in the human body. The enclosure is provided with at least one transparent wall allowing it to be used in applications requiring light emission or light detection such as reflectance oximeters. The mechanical elements of the enclosure are particularly adapted to facilitate the use of welding to provide a hermetic seal for the enclosure.

Abstract: A flat conductor foil is used on which the circuit is etched upon. After equipping this conductor foil with electronic structural elements the conductor foil is folded at predetermined folding edges for adaptation to the device shape. For forming the housing element this circuit unit is sheathed with a plastically mountable hardening synthetic material. The housing element is thereby separated into housing partial parts in such a manner that the housing partial parts may be joined together into a closed housing element when folding the conductor foil. Thereby, the housing partial parts are mounted onto the folding segments of the plane, still unfolded, but equipped conductor foil, whereby (before the folding) folding pieces are obtained for the individual folding pieces which protect the structural elements and the soldering and stabilize the foil for the joining.

Abstract: A wire stripper having a two-part hollow body and a group of circular cutters mounted within that body. The two body parts are interconnected for relative movement between an open position and a closed position at which the cutters are engageable with and penetrate into a cable end portion positioned within the body. Locating structure functions to properly position that cable end portion within the body. The cutters are spring biased so as to be movable into and out of a position at which they have maximum penetration in the cable end portion. A cable end stop fixes the axial position of the cable end portion and is movable into an inoperative position in response to the body parts being moved into the closed position. A handle is rotatably connected to the body and includes a releasable retainer which is engageable with the cable to hold the cable against movement relative to the handle.

Abstract: A punch tool is disclosed for puncturing the walls of heat exchanger tubes when they become worn in order that the tubes may be repaired. Said tool comprises a hardened, longitudinally drilled, steel rod that is able to fit within the heat exchanger tube. A piston with a cutting bit is fit within a milled slot that communicates with the longitudinally drilled hole of the hardened rod. Once the tool is inserted into a tube to be repaired hydraulic pressure is applied and the piston is forced outward thereby puncturing the tube.

Abstract: A folding knife having a blade, a first scale and a second scale on either side of the blade with a tumbler or back spring positioned to hold the blade in its operative position having the features of pivotal mounting of the second scale and hand-force latching means of the second scale whereby the second scale can be readily pivotally moved away from the first scale for cleaning.

Abstract: A folding camp knife (10) comprises an elongated handle case (12) having sideplates (24a and b) separated by a blade gap (26) in which a blade (14) is mounted for rotation by means of an axle pin (16) passing through holes (30 and 54) in the sideplates and the blade. A locking piece (18) engages the axle pin on the outside of the handle case and can both rotate about and slide longitudinally along the axle pin. The locking piece includes a locking flag (68) which can be moved into handle and blade peripheral locking slots (38a and b and 52) when they are in registration. Once the locking flag is slid into these peripheral locking slots the axle pin can be tightened against the locking piece to prevent further movement of the locking piece, thereby preventing rotational movement between the blade and the handle case. The axle end of the blade has a plurality of locking slots (52a-e) extending thereabout which allow the blade to be placed at various angles.

Abstract: A dry wall and masonary cutting tool comprised of an interior cutting box, the interior cutting box having a plurality of forward facing teeth for cutting a dry wall panel, a pair of locating nails for precisely locating the interior cutting box with respect to an exterior cutting box and, a pair retaining clips for retaining the interior cutting tool in the receptacle and a center threaded passage for accepting a threaded connecting screw; an exterior cutting box, the threaded connecting shaft and hole cooperating to pull the interior and exterior box together to cut the hole in the dry wall material; and a compression spring to push the threaded connecting shaft to an outward position when not engaged in drilling. In operation, the interior cutting box is placed in a wall receptacle, the panel pressed into place, the exterior cutting box positioned on the locating nails, and a hole drilled through the panel.

Abstract: An aligning mechanism for power hand saws in the preferred structure of this disclosure is connected to a saw. The saw comprises a motor, a handle, a blade, a base, and a switch to activate the motor and the blade. The mechanism includes an aligning device for aligning the saw. The aligning device and the saw move forwardly together and in unison during cutting movements of the saw. Such aligning device has an operable position and an non-operable position, such operable position being for positioning at least a portion of the aligning device below a saw base for engaging a work piece and the non-operable position being for positioning the aligning device up and away from a work piece. In one embodiment of the invention, an electrical solenoid is employed to move the aligning device, such solenoid being connected to the saw switch. Another embodiment of the invention employs a manually activated aligning device.

Abstract: A hand-held, fan-cooled motor drive jig saw with a two-piece, tiltable shoe assembly having a reversible, phenolic resin base portion with a wide recess for scrolling and a narrow recess for straight cuts. The base is connected to the shoe cover independent of the attachment of the cover to the saw housing to maintain a pre-selected tilt angle. Coolant air exhausted from the saw housing is channeled through flow passages in the shoe assembly to outlet ports in the shoe assembly to provide debris-clearing air streams oriented parallel to the workpiece surface and perpendicular to the cutting direction. The housing exhaust port is flow-connected to the shoe assembly through complementary sliding surfaces at the point of attachment.

Abstract: A preplanned system entitled "preliminary recording activity by guide and point" is a topmost sheet and also a perforating point for perforating the said topmost sheet and going onto an underlying sheet to process, symbolize, chart, map, layout, draw, write, and record on the said underlying sheet; this system invention has replaced scale and ruler with detachable, disposable said topmost sheet, said perforating point and straight edge; this invention has also brought the rough, repliminary recording phase closer to and has substituted part of the activity for finishing the processed said underlying sheet and thereby also replaced all previously used marks and their removal for all correct activity on the said underlying sheet transferring all these temporarily used marks onto the detachable, disposable said topmost sheet for a cleaner processed and quickly finished said underlying sheet; the novelty is the positioning, perforation point hole indicators made by the said perforating point through the said topm

Abstract: An automobile wheel bolt circle gauge which includes a pair of movable projections which can be inserted into adjacent bolt holes to measure the distance therebetween and register the distance on indicia inscribed on the gauge which can be interpreted to determine the maker of the wheel or the automobile on which it might fit.

Abstract: Drum reactor (10) for aerobic fermentation has a frame (12) with which a height adjusting device (14). The drum reactor is provided with a rotary drum (11) having air pipes (20) extending longitudinally along its outer shell. The air pipes (20) are subject to compressed air and humidity by the action of a distributor slide valve (25) so that the air pipe (37) which is free of fermenting material (26) is inactive. Associated with the air pipes (20) are a plurality of jets (21) which lead into the drum interior (27) where they are at least partially covered by baffles (22). By their plough-like disposition, the baffles ensure circulation and onwards conveyance of the material to be fermented. Provided on the drum bottom (38) is a discharge orifice (33) which can be closed by a plough flap (36). For delivery of fermented material, the plough flap can be spread open into the drum interior.

Abstract: The process according to the invention controls a drying device for a vehicle wash for a vehicle, a travelling portion of the drying device being movable relative to the vehicle with the aid of a travel motor and a lift motor. The travelling portion carries a drying means and a light barrier whose light beam passes with clearance under the drying means and a device controller operating the travel and lift motors guided on a path which keeps a guaranteed clearance from the contour of the vehicle. At the beginning of the drying process the portion of the drying device in a lowered initial position in front of or behind the vehicle is moved. As a result at least the raising and lowering of that portion is controlled by a gating signal. Before beginning each drying process the sensitivity or response threshold of a gating device for the gating signal and/or a conditioning device adjusting the gating signal is adjusted automatically to a value sufficient to define the release of the light beam.

Abstract: The invention is in a sole unit for footwear including a midsole/wedge component (16, 30, 40, 60) of plastic material. The midsole/wedge component includes a core (26, 36, 46, 62) which may be characterized as a V-channel within a central longitudinal portion extending away from the back of the heel along substantially the longitudinal axis of the component. A pair of posts (22 and 24, 32 and 34, 42 and 44, 64 and 66) describing a lateral and medial post extend along the component at least to the region of the heel seat of the wedge. The density of the medial post (Shore A) may be equal to or greater than the density of the lateral post, and both posts have a density (Shore A) greater than that of the core to minimize excessive rear foot motion and instability.The invention also envisions several process for forming the midsole/wedge component.

Abstract: A sports shoe (1) is provided with air chambers underneath a comparatively rigid outer shell (2) such that pressure in these air chambers, i.e., the compression on the foot, can be adjusted by a pump system (5, 6). The design of the pump system is simple, easy to manufacture, compact and operationally reliable due to the valves (14, 15) of the pump system being enclosed in a common housing part (13) separated by a partition (20) from the membrane pump chamber (11). The valves (14, 15) are mounted coaxially in tandem sequence. The evacuating valve (15) can also serve as the pump suction valve and is provided at an end (37) with a manually displaceable stem which, during evacuation of the air chamber, wil make contact with the valve stem (b 32) of the pump pressure valve (14).

Abstract: The reinforcing construction member of synthetic resin for motor vehicle license plates comprises a marginal bead surrounding the stamped rim of the license plate and a surface in contact with the reverse side of the license plate. It is fashioned as a frame (1) with an angular profile (5, 6) covering the stamped rim of the license plate all-around from the front and from the side. The surface of the reinforcing construction member in contact with the rear side of the license plate consists of several partial surfaces formed, on the one hand, by connecting webs (9) shaped integrally with the angular profile (5, 6) of the frame and bridging respectively two mutually parallel-extending lateral parts thereof and, on the other hand, by holding lugs (10, 11) shaped at the two other lateral parts (4) of the frame, one of these holding lugs (10) being shorter than the other.

Abstract: A display stand for belt buckles or other articles includes an upright stand having one or more vertical display surfaces. A vertical slot is provided in the display which is adapted to receive the buckle clip of a belt buckle or a projection on any other type of article to be displayed. The display also includes a plurality of holes which extend from the display surface at an angle so that they pass through the slot. A plurality of elongate pins are provided to be inserted through the holes and the slot. An article is displayed by inserting its clip or projection into the slot and inserting a pin in the hole to secure the buckle or other article to the stand.

Abstract: This invention is an integrated three-position or three-stage safety mechanism for firearms that allows the release of a locked breech bolt mechanism while a Safety Lever is in the "Safe" (Position No. 1) or no fire position, when the trigger and/or the sear mechanism is locked. While in Position No. 1, the safety mechanism allows the firearms' handler or user the ability to depress the Safety Level (Position No. 2) to release, lift, rotate, open, and/or remove the bolt assembly as desired. The design of the Safety mechanism prohibits the operator from inadvertently moving the Safety Lever to the OFF or "Fire" position (Position No. 3), while depressing the Safety Lever (Position No. 2) to release the bolt assembly. This allows removal of the "live" or empty cartridges while the Safety Lever is locked and blocked in the "Safe" or OFF position, thus significantly enhancing the safety of this operation.

Abstract: A system for converting firearms to electrical ignition for firing of electrically primed ammunition. The system includes a drop in module to replace the conventional trigger, hammer pin, and other firing mechanism parts, and which has either included or separate structure to replace conventional firing pins. The module contains a safety interlock system, indicator lights, an on-off switch, an actuator switch, ammunition contacts and appropriate connecting circuitry to a power supply means.

Abstract: A device which holds a fishing rod and automatically sets a fishhook in a fish. A stake driven into the ground supports a pivot arm on which the rod is held. A trip lever holds the arm in position for fishing and is released by a trigger wire when the fishing line is subjected to a pulling force caused by a strike on the bait. A spring then pivots the arm upwardly in an abrupt and forceful manner to set the fishhook.

Abstract: A multipurpose fishing line aid apparatus comprising a tubular means having a longitudinal opening along one side that reversibly snaps on and off of a fishing pole and a pair of substantially flat coplanar superimposed surfaces with a notch and razor blade cutting edge sandwiched therebetween attached to the opposite side relative to the longitudinal opening of the tubular means. The pair of surfaces can be further equipped with at least one extension located in the region of attachment to the tubular means and colinear to the longitudinal opening and extending beyond the tubular means as well as at least one circular recess for positioning an eyelet to assist threading a fishing line through the eyelet.

Abstract: The present invention relates to an artificial spinning lure which has a non-streamlined contour along its leading face. The contour provides the lure with an induced and controlled drag which is sufficient to substantially completely overcome the torque created by a spoon, or spinner blade, as the lure is drawn through the water. The present lure is comprised of a spindle which has a spinner blade rotatably attached thereto and a resistance body mounted on the spindle and spacedly positioned from the spinner blade. The resistance body has a non-streamline, drag producing front face which produces a drag when the lure is being pulled through the water that is sufficient to substantially entirely overcome the torque produced by the rotation of the spinner blade.

Abstract: A collapsible trap is disclosed characterized by a net member and a folding frame member, the frame being disposed within the net member and adapted to be erected to form an enclosure therewith. The net member has an entrance including an opening to permit water creatures to enter the trap and to hinder leaving the trap. The folding frame member disposed within the net member comprises first and second annular members attached to the net member in spaced parallel relationship. A plurality of folding longitudinal members join the first and second annular members together. Each of the longitudinal members comprises a pair of arms having disatal and proximal ends. The distal ends of the arms are pivotally attached to annular members.

Abstract: This invention relates to the containment of poisoned baits in a manner that will isolate them from non target species while allowing a user friendly method of reloading the station. Specifically, the device is designed for use in areas accessible to children, pets, and wildlife and, the method of reloading the baiter allows the use of common types of packaging of retail rodenticides, in a manner that affords them with a reasonably protective containment in the aformentioned areas The baiter is designed to allow the introduction of a prepacked rodenticide product on one level of the device and, to allow a rodent access through a totally seperate level. This lateral division of the containment system and the set back of the rodent entry level makes it virtually impossible to reach the stored bait by attempting to compromise the structure of the device with fingers of common objects that might be found around a household.

Abstract: A removable automobile side window includes a transparent window panel with a central cut out opening and a smaller delivery window on the outside of the opening.

Abstract: Herein disclosed is a window regulator of a sashless door, which comprises a link motion device which can assume both a contracted condition and an expanded condition. When the window pane is moved up near its full-closed uppermost position, the link motion device changes its condition from the contracted condition to the expanded condition thereby shifting the lower portion of the window pane outwardly, that is, toward the outer panel of the door.

Abstract: A non-metallic decorative and protective edge guard comprises a non-metallic body having a curved base and legs extending from the base for fitting against sides of an object onto which the edge guard is installed. The body contains notch structure formed in its surface and a layer of non-metallic material having a size corresponding to that of the notch is fitted to the notch. The notch structure comprises an undercut, or one or more slots, or a combination thereof, and various embodiments of edge guards are herein disclosed.

Abstract: A seal for sealing the gap between a door opening (1) and a door of a motor vehicle, the seal having a fixing portion (5) incorporating a carrier (9) which is preferably formed of wire bent into a zig-zag and held in that configuration by stitching or knitting (13), the carrier being incorporated in the fixing portion during extrusion of the seal which is also provided with a sealing portion (7) which may be formed of a different hardness from the fixing portion (5). A central region of the carrier (9) is not embedded in the material of the fixing portion so that wefts of limbs (11) of the zig-zag carrier are exposed so that the seal can be attached to either the door frame of the vehicle or the door itself by means of a plurality of large headed studs (3) welded to the frame or door, with the heads of the studs being engaged behind two adjacent limbs of the carrier and with the stem of the stud extending between said limbs.

Abstract: A finishing method and apparatus wherein a tub containing loose abrasive material is rotated at high speeds about a vertical axis to cause finishing media to form a layer of media along the side wall of the tube. One or more workpieces to be finished are supported in the media and are rotated about a vertical axis coincident or parallel to the axis of the tub such that a rapid cutting and finishing action is provided by the relative movement of the tub and the workpieces. The method and apparatus further comprises removing compound continuously from the lower part of the tub and cooling the material and returning it to the tub.

Abstract: An abrasing apparatus including an annular barrel having an upper opening. The barrel is rotated around an exciting coil and is filled with magnetic abrasive powder which is arranged by magnetic flux generated by the exciting coil to form magnetic brush. A work is embedded into the magnetic brush. The work is rotated together with a spindle and the barrel is rotated so that the surface of the work is abrased by the magnetic brush. A bottom magnetic pole, a lateral magnetic pole and an upper magnetic pole are disposed in an inner periphery in the barrel in the proximity to the exciting coil and the strong magnetic brush is locally formed therein. The side portion of the work is located in the local magnetic brush, and the bottom, side and upper surfaces of the work are abrased like a mirror surface.

Abstract: A grinder wheel table feed apparatus converts rotation of a table driving motor into reciprocation movement of a grinder wheel table through a ball-screw mechanism to thereby impart a traverse movement to the grinder wheel table between a non-working position and a working position. The rotation of a reciprocation axle drive motor is converted through an eccentric cam into an oscillation movement of the grinder wheel table when the table is in its working position. A drive control system includes an encoder operable to read the rotational position of the reciprocal axle drive motor, and a control device effective to stop the eccentric cam at a predetermined eccentric angular position.

Abstract: A drilling machine for drilling holes in glass panes includes an annular support and an annular pressing member aligned opposite each other along a path of movement of the drill bit. The support and the pressing member are swingably mounted relative to the axis of the drill bit and are made preferably as inner rings of a ball and socket joint.

Abstract: A pitch box for sealing the junction between an upright elongated projection and the opening where it penetrates into the surface of a roof. The pitch box has a central tubular part which has a base adapted to be mounted against the roof surface surrounding the projection and adapted to extend upwardly generally coaxial with the longitudinal axis of the projection to provide a space surrounding the extension for receiving anchoring material. A collar surrounds the upper end of the tubular part and a bottom wall is provided between the bottom of the collar and a median point on the tubular part so that a trough is formed surrounding the upper end of the tubular part. The bottom of the trough has weep holes in it for discharging moisture. The top of the collar extends above the top of the tubular part.

Abstract: A synthetic plastic concrete wall tie comprising a pair of triangular truss sections disposed in end-to-end relation, an intermediate web section joining the truss sections of the apexes of triangles of the triangular truss sections, and T-shaped end sections at opposite ends of the tie with each end section being formed integral with its stem joined with the associated triangular truss section, the cross piece of each T-shaped end section comprising means for anchoring the tie to a slotted wall section when assembled therewith.The tie is usable with modular foamed plastic concrete form structure having a pair of modular concrete forming panels. The panels are comprised of a series of modular concrete forming sections stacked on top on one another in secured assembly and also disposed in end-to-end relation.

Abstract: A sun protection assembly (10) for shielding an air conditioner/heat pump from the direct rays of the sun. The assembly comprises a frame (12) to which a screen (14) is attached. Front and rear legs (16) are attached to the frame to support the assembly a predetermined distance above the ground.

Abstract: A walkway on a rooftop comprises expanded metal planks supported by U-shaped support stands disposed transversely with respect to the length of the planks. The planks have alternating rows of ridges and valleys, both of which have transverse slits. The planks are connected to the support stands by T-shaped bolts whose crossbars are rounded. The shanks of the T-bolts pass through the slits in the valleys and the crossbars nestle within the valleys in rotatably slidable engagement with the metal.

Abstract: A returned tread for use on an open portion of a stairway having a stair tread constructed of wood and a return nosing joined on at least one side edge of the stair tread so as to form an exposed shaped or mitered joint on a forward side edge portion of the assembly. The surface of the nosing which opposes the stair tread and the side edge of the stair tread are joined along at least a part of their adjoining surfaces by tongue and groove construction. A single finishing nail, wood screw or other suitable fastener secures the nosing to the stair tread at a position just rearward of the exposed joint. As a result, the stair tread and nosing will not slide relative to one another at the position of the fastener or in a region next to the fastener that includes the exposed joint as the rest of the stair tread expands and contracts in width over a range due to ambient temperature and humidity changes.

Abstract: A skylight system for providing an all plastic skylight in a barrel tile roof without the use of a curb. A sheet of plastic has a pair of longitudinal edges bent upward at a right angle to form a standing seam edge. A dome is formed in the center portion of the plastic sheet. The upper edge of the sheet is provided with a riser and is fastened to the roof sheathing adjacent an opening in the roof. A horizontal row of tiles rests on the riser. The lower edge is formed to match the contour of a horizontal row of tiles and is attached thereto. Anchor clips are attached adjacent the longitudinal edges of the opening and abut the standing seam edges. A plurality of step flanges also abut the standing seam edges to form a standing seam engaged by the anchor clips. The step flanges are formed to the contours of a vertical row of tiles and attached thereto. A batten strip is placed over the standing seam.

Abstract: The invention relates to the construction of tunnels.Its subject is a shuttering and shoring wall formed by joining end to end sections (1) which each consists of at least two section parts (2, 3, 4, 5) joined together end to end, the ends facing one another being connected by means of a key (6). Each section part consists of a certain number of elements articulated relative to one another. The key has two lateral insertion surfaces, and the end elements adjacent to the latter are equipped with assembly means compatible with these insertion surfaces.The advantage of the shuttering wall according to the invention is that it consists of elements which can be adapted to any tunnel shape and which can be recovered after use, is easy to handle, makes it possible to transmit longitudinal and transverse forces generated as a result of the advance of the shield of the tunnel-driving machine and the casting of the concrete and does not require the use of a shuttering skin.

Abstract: A load bearing floor or roof member is in the form of a flat plank member. It has flat major upper and lower walls and flat minor side walls. It is a rigid, hollow, integral structure of fibre reinforced plastics material, with a rigid plastics foam filling. In each minor side wall is an integral undercut channel which is shaped to receive slidably a connector portion of a connector member, which connector portion is of head and neck shaped cross section.