Abstract: A high temperature furnace particularly adapted for fusing crystalline silica includes a housing defining a heating chamber that receives electrically conductive elements with insulators positioned therebetween to establish an electrical flow path for heating the chamber. Resilient gas cylinders located externally of the housing bias graphite connecting rods that extend into the heating chamber to compress and position the conductive elements and the insulators therebetween while allowing expansion thereof during heating of the chamber. Graphite wall panels preferably define the housing heating chamber and have interlocking edges that position the panels relative to each other. Cooperable pairs of resilient gas cylinders at longitudinal ends of the furnace housing compress the wall panels to maintain the edges thereof in their interlocking relationship while permitting expansion during heating of the chamber.

Abstract: The device relates to a thermometer in which the thermometer body and mounting brackets are transparent and in which the thermometer body is adapted to be mounted in spaced relationship on a planar surface such that viewing may occur through the thermometer with minimal visual interference.

Abstract: A valve deactuator for an internal combustion engine is disclosed that utilizes a body of trapped liquid to permit a rocker arm to actuate its associated valve. When the liquid is released the rocker arm no longer makes its normal valve-opening excursion in response to movement of its associated pushrod.

Abstract: A wire storage and moving system comprising a vertically elongated wire containing spool adapted to be lifted and transportably supported upon a manually movable wheeled device.

Abstract: A stepped cone draw block disclosed has intermediate sheaves which each include a pair of plate-like annular sheave members with peripheral flanges between which a ceramic ring for drawing a wire is clamped. Side surfaces of the sheave members of each intermediate sheave face away from each other along an axis of a shaft on which the draw block is mounted and axially facing surfaces of these sheave members are bolted in engagement with each other midway between the side surfaces. One sheave member of each intermediate sheave has a central opening sized to receive and mount the sheave on the shaft with a shaft key received within a keyway of the opening to provide coupling to the shaft, while the other sheave member has an opening slightly larger than the shaft and a groove aligned with but slightly larger than the keyway so as to facilitate mounting of the sheave.

Abstract: In accordance with the invention there is provided a mouth filter for use with pipettes to insure that none of the liquid or any of the bacteria in the liquid being drawn into the pipette reach the mouth of the technician applying the suction. The filter comprises an organic resin housing having a filter membrane therein which divides the housing into an inlet chamber and an exit chamber, the filter membrane being hydrophobic and constituting a bacteria barrier. The housing has tubular extensions extending from the oppositely disposed axial end walls thereof. A tube is secured to one extension of the housing and is adapted to be secured in communicating relationship with a pipette into which the liquid is to be drawn. Connected to the other housing extension is a mouthpiece for mouth-applied suction by the technician, which suction is communicated through the filter membrane and tube to the pipette.

Abstract: Air operated hydraulic pump apparatus disclosed is particularly adaptable for use with tilting cab control systems. Reciprocation of a pump plunger to pump control liquid from a reservoir is achieved by a spring biased piston slidable within a cylinder bore and alternately moved in opposite directions by the spring bias and compressed air. A valve of the apparatus has a first position where it supplies compressed air to a first chamber of the cylinder bore so as to act against the spring bias and move the piston in one direction. The spring providing the bias is received within a second chamber of the cylinder bore and moves the piston in the opposite direction when the valve is moved to a second position that terminates the supply of compressed air to the first chamber and exhausts the first chamber to the environment.

Abstract: A transparent and flexible protective shroud for a welding wire containing spool adapted to be detachably mounted on a wire pay out assembly.

Abstract: A glass top table has pivotally supported end leaves mounted between spaced side frames for movement between an inwardly projecting storage position and an outwardly projecting use position. Each side frame has an upper frame member and a pair of legs projecting downwardly from opposite ends of its upper frame member. A glass table top extends laterally between the upper frame members and is located above the end leaves in their storage position and in alignment therewith in the use position. Each end leaf includes a peripheral rectangular frame which is elongated in a lateral direction and a glass leaf secured to the rectangular frame. A pair of support frame members extend laterally between the upper members of the side frames and are located adjacent the end leaf frames in the storage position thereof so as to provide an aesthetically appealing appearance.

Abstract: A transfer case for four wheel drive vehicles having a housing made up of two identical, complementary castings. The castings are secured together in opposed, complementary relationship to define a compartment for the mechanism for transmitting power to the front and rear axles of the vehicle. The castings are of identical construction to provide a compact housing and reduced manufacturing costs because of the interchangeability of the two castings making up the housing. The castings are formed to support a variety of transmission mechanisms. In one such arrangement disclosed, a dual range transmission is provided including parallel chain and gear train transmissions from the power shaft to the output shafts to the front and rear axles of the vehicle. The opposed end walls of the housing defined by the two complementary castings are formed with supporting structure for the power shaft from the engine, a counter shaft for the gear train transmission, and the output shafts for driving the front and rear axles.

Abstract: A seat recliner having seat back and cushion arms connected to each other about a pivotal axis for adjustable movement. Plate-like ends of the arms are located adjacent each other with a locking ring therebetween pivotally fixed to the seat back arm end encircling the pivotal axis. Locking teeth of the ring extend inwardly and are arranged in an arcuate shape about the pivotal axis. A locking dog is received within the locking ring between the ends of the arms and has a plate-like construction slidably supported between the arm ends. Spaced guides on the seat cushion arm end guide the dog during movement between locking and nonlocking positions. A toothed end of the dog engages the locking ring teeth in the locking position to prevent relative pivoting between the arms and disengages the ring teeth in the nonlocking position to permit such pivoting for adjustment of the arms.

Abstract: A leg construction for a folding bed frame is disclosed in which a sheet metal leg is received generally within the confines of an angle iron end rail and is secured to the inside surface of the end rail. An upper portion of the leg is supported in underlying relation to the horizontal member of the end rail for additional support. An integral tab on the leg extends upwardly through a slot in the end rail and provides a positive stop for engagement with the adjacent pivotally attached side rail to define a right angled position between the end and side rails.

Abstract: A shelf clip of a unitary metallic construction for securely positioning a shelf on a shelving unit and usable in a back-to-back relationship with a like clip in an interfitted relationship. Upper and lower ends on an attachment flange of a body of the clip include a support hook and a downwardly extending positioning tang located on one side of a lateral center between the attachment flange sides so as to permit the interfitted relationship of the clips in their back-to-back relationship. A support flange extends horizontally from the lower end of the attachment flange with the positioning tang struck therefrom and includes an end that projects upwardly in a slightly inclined orientation. Cooperation between a dimple formed in the attachment flange and the inclined support flange end securely positions the shelf with respect to the clip while cooperation of the support hook and the positioning tang positions the clip with respect to the shelving unit.

Abstract: A magnetic tape sensing head cleaner disclosed has a hollow housing including a pair of housing members that are selectively latchable to each other in a closed position and releasable therefrom to permit replacement of a cleaning loop received by a track within the housing. Latching portions formed integrally with the housing members during plastic molding thereof cooperate in pairs to provide wedging latches that secure the housing members to each other in the closed position and permit repeated separation thereof for replacement of the cleaning loop. The track that receives the cleaning loop is preferably located within a cleaning loop compartment at one end of the housing and includes a drive roller, a pressure pad, and a guide loop around which the cleaning loop is driven. Adjacent another end of the housing, a storage compartment is defined for a cleaning brush, a cleaning probe, cleaning probe tips, and a cleaning fluid bottle.

Abstract: Apparatus and a method disclosed for forming an axle spindle from a hollow axle blank incorporate a hollow punch having a metallic body with an inner work surface defining a work opening and a mandrel fixed within the work opening projecting toward an open end thereof from a closed end of the opening. During forming, the punch is moved relative to the axle blank in the direction of the mandrel projects so that the mandrel is received within the hollow axle blank as the work surface of the punch body forms the blank about the mandrel to provide a spindle. Preferably, several punches of this type are utilized to complete the spindle forming process on the axle blank. Each punch preferably has an elongated annular shape with a round inner work surface and a round outer surface on the mandrel so that the formed spindle is of a round shape. One of the punches which causes outward material movement has an undercut on its mandrel to facilitate punch withdrawal.

Abstract: Seat positioning mechanism of the type including an elongated thin-walled housing telescopically receiving a rod with friction lock washers operable to restrain the rod against movement with respect to the housing in any selected position. The invention includes a construction for increasing the locking efficiency of the lock washers and reducing the cross-section of the housing. A slot is formed in the wall of the housing, and one end of the slot is located on the housing wall at the outer boundary of the housing to define a fulcrum. The other end of the slot forms a stop on an inwardly depressed portion of the housing wall. The lock washers have lever arms that project into the slot. The fulcrum is curved to minimize the likelihood of sideways cocking of the lock washers. Also disclosed is a novel release mechanism including a shaft rotatably supported in a mounting bracket secured to the housing.

Abstract: A hollow elastomeric seal member having a bottom wall particularly formed to facilitate installation of the seal within an expansible joint.

Abstract: A recirculating processing oven heater including a direct fired burner for heating processing gas and a catalytic converter downstream from the burner for removing unburned combustible gas and providing additional heating prior to delivery of the processing gas to an associated processing oven. A housing of the heater defines first and second parallel paths along which the gas flows between an inlet and an outlet thereof and the burner and catalytic converter are located along the first path to heat gas flowing therealong while mixing of the gas downstream therefrom at a junction of the two paths provides heating of the gas that flows along the second path. The relative mass flow rates of gas flowing along the first and second paths is adjustable by a control valve mechanism including first and second adjustable valves at the inlet of the heater housing.

Abstract: An arm record cleaner of the disclosure incorporates threaded connections for adjusting the vertical position of a cleaner arm and the tracking pressure applied by a pivotally mounted cleaning head member on a front end of the arm to a record being cleaned. A base of the cleaner supports the lower end of a vertical post by one threaded connection and the upper end of the post mounts an intermediate portion of the arm. On the opposite side of the post from the cleaning head, the arm includes a rear end on which a counterbalance is supported by another threaded connection to provide the control of the tracking pressure. The cleaning member has a soft pile covered cleaning edge and a brush and is pivotally mounted on the cleaning head so that the cleaning edge and brush balance the pressure applied to a record being cleaned. One preferred embodiment includes a rotatable nut of the base that moves the post up and down.

Abstract: A vehicle window regulator of the disclosure includes a band trained over upper and lower idler rollers whose axes of rotation are parallel to the window and each other and also trained over a manually driven drive roller located intermediate the idler rollers and rotatable about an axis perpendicular to a plane through the idler roller axes. An inboard reach of the band extends between the idler rollers and is trained over the drive roller while including a half twist so that the natural configuration thereof accommodates for the different orientations of the drive roller axis and the idler roller axes without stressing the band. An outboard reach of the band is secured to the window by a connector to move the window as the drive roller moves the band. Preferably, a vertically extending housing of the band includes upper and lower ends that mount the idler rollers and an intermediate portion that mounts the drive roller.