Abstract: A weaving loom comprises a plurality of interchangeable sections forming the loom frame. The sections are separably connected together in end-to-end abutment. The connection between abutting sections is an unique tab and slot construction preventing them from being pulled apart axially but causing the sections to disconnect when one section is twisted downwardly relative to the other section about their abutting ends. Pegs project upwardly from the frame sections, and when the loom is in use, yarn woven around the pegs back and forth between opposite sides of the loom frame prevents the loom sections from becoming disconnected.

Abstract: A resonant spectrophone system has a laser arranged to direct a laser beam into a chamber containing gas to be analyzed wherein absorption data relative to the gas constituents is obtained by detecting pressure variations within the chamber. The laser is operated such that the laser beam passing through the chamber generates a resonant wave therein. Pressure variations within the chamber are monitored at locations corresponding to nodal and/or peak points of the resonant wave. The nodal point signals represent background noise and are subtracted from the peak point signals to remove noise components from the peak point signals or out-of-phase nodal signals are subtracted to perform this function and thereby yield signals which more accurately represent the absorption data relative to the gas constituents.

Abstract: A joint for securing a tubular member to a support member comprises a pair of extruded holes in the sidewall of the tubular member opposite each other, a hole in the support member, the tubular member being disposed against the support member with the extruded holes in alignment with the hole in the support member, and a self-tapping fastener engaging the support member and passing through the hole therein to threadedly engage both extruded holes, the threaded fastener having cut complementary threads in both extruded holes during fastening.

Abstract: A solenoid operated directional valve comprises a plug-in type solenoid which makes electrical connection with a terminal block on the valve body via plug-in type terminals. The plug-in type terminals are on a connector element which is selectively positionable on the solenoid to select either a portion of the solenoid winding which is for 60 hertz energizing current or a portion which is for 50 hertz current.

Abstract: A card operable magnetic lock apparatus comprising an elongated non-magnetic plate member and a plurality of tumbler members which are normally biased into engagement in longitudinally spaced recesses of the plate member to prevent longitudinal movement thereof. The tumbler members pivot about a common axis and have north and south magnetic poles which are substantially opposite relative to the axis. A properly encoded magnetic card can be positioned adjacent the tumbler members to urge the tumbler members out of engagement in the recesses to free the plate member for longitudinal movement.

Abstract: A seat back recliner comprises an infinitely variable mechanism which positions the seat back angularly relative to the seat cushion about a hinge axis in one-to-one correspondence with operation of an operating lever. Once the seat back has been positioned to a desired setting by operation of the lever, the seat back remains in the selected position. External torques applied to the seat back about the hinge axis tending to displace the seat back from the selected position are resisted by a locking action between wedging members in the infinitely variable mechanism. When it is desired to position the seat back, operation of the lever is effective to rotate the seat back to the desired position while concurrently interacting with the wedging members so as to prevent the wedging members from disallowing the desired rotation.

Abstract: A work transfer device executes a generally rectilinear path of movement for progressively transferring articles between successive stations. Transverse vertical motion is imparted via a guide rod which is bodily transversely displaced while maintained parallel with the longitudinal travel of the carriage members. Slides are shiftable longitudinally on the guide rod. Vertical rods project from the slides through the carriage members to support a walking beam type transfer bar. The guide rod is displaced by a double bellcrank mechanism thereby imparting vertical transverse motion to the walking beam.

Abstract: A work transfer device executes a generally rectilinear path of movement for progressively transferring articles between successive stations. Transverse vertical motion is imparted via a track which is bodily transversely displaced while maintained parallel with the longitudinal travel of the carriage. A roller rides in the track with longitudinal motion of the carriage. The track is displaced by a double bellcrank mechanism to shift the roller vertically and in turn impart vertical transverse motion to the device.

Abstract: A solenoid operated directional valve 10 that has cushioning chambers 48 and 50 into which the attenuation elements 52 and 54 on the ends of the spool 38 are received for cushioning the movement of the spool, and a transfer loop 56 through which fluid can travel during the cushioning operation, characterized in that the attenuation elements are constructed and arranged so that they will function to purge air or other gaseous fluids from the cushioning chambers and the transfer loop as an incident to reciprocal movement of the spool.

Abstract: A three-wheeled vehicle (10) designed to provide practical transportation for one or two people at minimum energy cost, wherein the driver and passenger sit in tandem in a narrow enclosed fuselage (12). Steering is provided by a single front wheel (14), and a propulsion system drives the two rear wheels (16). Vertical airfoils or fins (20) enclose and streamline the upper portions of the rear wheels, while providing the vehicle with aerodynamic stability and forward thrust in a crosswind. Horizontal struts (18) connect the fuselage with the vertical fin-wheel assemblies. The juncture between struts and fuselage are faired with concave fillets (22) which enlarge toward the rear, and terminate in a surface (26) perpendicular to the longitudinal axis. The fillets reduce vehicle drag by preventing flow separation. Aerodynamic drag of the vehicle is about one-sixth that of typical subcompact cars, and its aerodynamic stability keeps it on course in crosswinds, despite being less than half as heavy.

Abstract: A sound barrier system particularly suited for out-of-doors, ground-mounted installations, such as for a highway noise barrier, comprises a vertical wall composed of successive individual wall sections arranged with immediately adjacent wall sections disposed at an intersecting angle to each other. Immediately adjacent wall sections are rigidly joined together in abutment along a common vertical joint. An earth anchor is anchored into the ground at each vertical joint. Each joint is secured to the corresponding earth anchor so that downwardly directed hold-down forces are applied by the earth anchors to the wall at the bottom portions of the joints.

Abstract: A shuttle type accumulating conveyor adapted to advance articles located behind an empty station to their next successive stations. The conveyor comprises an elongated support along which the stations are longitudinally spaced apart, a transfer bar movable forwardly and rearwardly longitudinally of the elongated support, pusher type feed units and feed unit setting assemblies mounted on the transfer bar and actuator assemblies for moving the feed units to feed positions so that upon an initial rearward movement of the transfer bar from a start position all feed units behind an empty station are moved to their feed positions. The transfer bar is then moved forward a distance substantially greater than the distance between stations to advance articles from station to station. Binding of the drive mechanism due to the prolonged travel of the transfer bar, during which feed unit setting assemblies contact actuator assemblies, is prevented by cooperating recess and pivot means on the actuator assemblies.

Abstract: A rotary milling cutter has a body with one or more insert seats on the body. A cutting insert is disposed in each seat and is locked in place by means of a pair of fasteners which are threaded into corresponding tapped holes in the cutter body adjacent the seat. Each insert contains a pair of spaced grooves on a surface of the insert adjacent the fastener. The axis of each fastener is disposed in the same plane as and at an acute angle to the axis of a corresponding groove. As each fastener is advanced into its threaded hole, a circular edge of the head of the fastener lodges in the corresponding groove exerting a locking force to lock the insert in place in its seat. The grooves have elliptically contoured cross sections conforming to the elliptical projections of the circular edges of the fastener heads when viewed axially of the grooves. There is also a counterbore at the near end of each threaded hole for receiving the head of the corresponding fastener.

Abstract: An overdeck assembly for use in a sofa bed mechanism consisting of a plurality of sections foldable between collapsed sofa positions in which sections are stacked vertically and extended bed positions in which the sections extend in substantially horizontal alignment. The overdeck assembly includes a flexible over deck member formed of a polypropylene sheet and secured to the sofa bed mechanism by a tensioning mechanism which allows the deck member to hang loosely below the sofa bed sections in the extended bed position of the mechanism and is stretched across the top of the stacked sections in the sofa position so as to provide a taut uninterrupted support surface for the sofa cushion or cushions.

Abstract: A box spring assembly which includes a generally rectangular frame, a welded wire grid disposed above and aligned with the frame, a plurality of upwardly extending limited deflection wire springs which are mounted at their lower ends on the frame and at their upper ends are interlocked with the welded wire grid, and corner springs which are yieldable and are supported on the corners of the frame so as to support the corners of the grid. Each of the limited deflection springs is formed at its upper end with an attaching portion that is connected to the grid merely by moving it from an initial assembly position to an interlocked position, without the requirement of any notches in the grid. This structure enables assembly of the grid and the springs without the requirement for the usual attaching clips.

Abstract: A chin strap safety attachment including a high impact resistant rigid anchor insert mounted upon a chin strap of the protective headgear. The anchor insert has a tongue which is shaped so as to be insertable into an opening in a coacting anchor plate when the anchor insert is rotated from its normal locking position in engagement with the anchor plate. A Lift-the-Dot fastener, adjustably mounted on the free end of the chin strap adjacent the anchor insert, engages the anchor plate to provide additional securance of the chin strap.

Abstract: A machine for reducing, crushing, and joining used metal cans to form an ingot comprising a stack of laminated crushed cans. The reducing chamber contains a vertically adjustable platen on which the ingot is formed. The cans are reduced, crushed, and joined by a ram which is operated within the chamber. Punches on the ram are effective to pierce extruded holes in the crushed cans after the cans have been flattened. The ram is powered hydraulically, or by any other pressure producing device, via a toggle so that an increasing compression force is developed as the cans are crushed.

Abstract: A folding tent assembly adapted to be mounted on a vehicle top or other suitable elevated surface. The assembly includes a pair of rigid base sections hingedly secured together and foldable to define a container in which the remainder of the tent can be stored, and unfoldable to define a planar platform a portion of which extends outwardly from the vehicle top or other elevated surface and on which a flexible cover and frame members can be supported to provide accommodations. A support member having a pair of upright legs, a plurality of cross bars and a pair of rigid extenders rotatably mounted on the upper ends of the legs is provided for bracing the outwardly extending portion of the platform. The extenders are rotatable between a folded position, in which the extenders are substantially parallel to the cross bars and in which the support member can be stored on top of the folded tent and within the confines of the separate travel cover; and a bracing position in which the extenders engage the platform.

Abstract: A bed or mattress structure having at least one pneumatic bladder confined within an outer perimeter of resilient but relatively firm edging material, with top and bottom covers, wherein air flow tubes are coupled into the penumatic bladder and are connected to an electrically driven blower assembly which intakes and pressurizes ambient air at a moderately elevated pressure to the air bladder; the blower and air flow paths being controllable by at least one hand held control unit.

Abstract: Apparatus selectively providing either two or four wheel drive for a motor vehicle wherein the ratio of torque transmitted to the front wheels when the four wheel drive is selected is preset and wherein limited slippage between the front and rear wheel drive is permitted, and remote control actuator means are provided for selectively shifting the apparatus between its two and four wheel drive positions.