Abstract: A high voltage electrical switching apparatus including a base formed from a pair of flat dielectric plates supported in a spaced relation, a number of elongate elliptically shaped contacts positioned between the plates at equally spaced intervals, a dielectric bar mounted for linear motion between the plates, a pair of electrically conductive plates mounted on opposite sides of the bar, each conductive plate including a pair of louvered contacts spaced a distance apart sufficient to electrically interconnect two of the elongate contacts, and a Geneva drive assembly for moving the bar in steps of equal distance.

Abstract: A tuck assembly for automatically inverting the gussets of a pocket file folder as the file folder is moved through a cutting and folding line, the assembly includes a tuck section having a plurality of a V-type tuck rolls of decreasing depth for opening the folded gusset, a guide section for supporting the edges of the file folder pocket and a compression section for folding the open gusset into the edge of the pocket.

Abstract: A photographic documentation apparatus for obtaining high resolution and continuous tone photographs of a TV monitor or CRT (Cathode Ray Tube) image, the apparatus including a main housing adapted to be mounted on the monitor to prevent movement and assure sharp photographs, a cover for opening the housing to view the monitor, and multiple camera carriages adapted to be mounted on the main housing, each carriage being designed to hold a different camera, and including a guide or indicia indicating the exact setting of each carriage in the main housing.

Abstract: An adaptor for supporting a key box on the valve actuator for an underground water main butterfly valve, the adaptor includes a mounting plate having guides arranged to align the base of the key box on the valve actuator and a stabilizing plate connected to the mounting plate in a spaced relation thereto and being adapted to be positioned below the butterfly to prevent tipping of the mounting plate.

Abstract: A temperature-responsive trip assembly for a primary circuit breaker, the assembly including a permanent magnet member biased to a circuit opening position and pertinent to engage a thermally-responsive metallic element having a predetermined Curie temperature, the element being formed of a nickel-iron alloy having approximately 32% nickel and being arranged in edge-abutting relation to the magnet.

Abstract: An adaptor for supporting a key box on an underground gate valve, the adaptor including a rectangular metal ring adapted to be seated on the gate valve bonnet flange, a number of radially extending arms positioned to engage the lower edge of the key box bonnet, and a resilient ring positioned between the adaptor ring and the key box flange.

Abstract: A low voltage tap changer including a dielectric base fabricated from flat insulating sheet, a number of control decks mounted on the base, each deck including a corresponding number of cylindrical contacts, a continuous insulating shaft extending through each of the decks and being mounted for rotary motion with respect thereto, a number of pairs of curved contacts formed from flat copper sheet, mounted on the shaft and being positioned to engage the contacts, each of the pairs being self-aligning and biased to operatively engage the contacts and a Geneva drive assembly for rotating the shaft in a step-by-step manner and for locking the shaft in each position.

Abstract: A primary power circuit breaker adapted to be immersed in the dielectric fluid for a transformer, the breaker including an arc interrupting assembly for extinguishing the arc produced on load break; a trip free mechanism responsive to primary, secondary or primary-secondary differential current signals and thermally responsive to fluid temperature, and an externally operable reset assembly for closing the circuit breaker.

Abstract: A jewelry clasp having a main body formed by a pair of symmetrical members mounted in a parallel spaced relation to form a laminated structure, each member including a closed loop at one end and a partial loop at the other end, the closed loop being connected to one end of a decorative chain and the partial loop being detachably connected to the other end of the chain and a detent type latch assembly mounted on the main body for locking the other end of the chain on the partial loop.

Abstract: A bullet feed assembly for a shell casing reloader, the assembly including a housing having a passage, a gravity feed bullet reservoir connected to the upper end of the passage, a first pair of catch members pivotally mounted in the housing for movement into the passage, to catch the bullets, the catch members including cam surfaces engageable by movement of a shell casing into the passage to release the bullet, and a pair of latch members mounted for pivotal movement into and out of the passage to prevent upward movement of the bullet in the passage.

Abstract: A gyratory cone crusher of the type having a crusher head assembly mounted on an intermediate member supported for rotary motion on a shaft to produce gyratory motion of the crusher head assembly within a bowl assembly. The intermediate member including a skirt surrounding the shaft and a stub shaft of reduced diameter extending upward above the shaft. The intermediate member being supported on the shaft and the crusher head assembly being supported on the intermediate member by roller bearing assemblies, the bearing assemblies being lubricated by a closed lube oil recirculating system, and an anti-spin assembly connected between the spindle and the crusher head assembly, the anti-spin assembly being self-aligning with respect to the crusher head assembly, and including a one-way clutch either of the linkage or cam type mounted in the spindle.

Abstract: An adjustable dockboard for bridging the gap between a loading dock and a carrier, the dockboard including a ramp member hingedly connected to the loading dock and biased to an elevated position, and a tread plate assembly positioned in the ramp member and movable to an extended position to engage the bed of a carrier when the ramp member is lowered, the tread plate assembly being locked into a set position on engagement with the bed of the carrier, the tread plate assembly being removeable from the carrier for repair and maintenance and the ramp member being seated in the dockboard by its own weight.

Abstract: An elastomeric insulated fully shielded arrester including one or more surge arrester blocks mounted within an elastomeric housing having a layer of conductive material on the outer surface thereof, an electrically conductive contact at each end of the arrester block, the elastomeric housing providing a compressive force for maintaining electrical communication between the electrical contacts and the block or blocks and closely engaging the outer surface of the block or blocks to minimize corona discharge.

Abstract: A chance game including a game board having a plurality of spaces arranged to provide diverse paths of travel. The game also includes a number of auxilliary boards pivotally mounted on the game board, each auxilliary board including a plurality of spaces arranged to provide extended paths of travel on said game board. The game further includes a number of game pieces adapted to be moved along the paths of travel, a first chance device for determining the number of spaces of advance for the game pieces and a second chance device for determining the position of the auxilliary boards.

Abstract: An external manhole sealing assembly comprising a flexible sleeve spanning the joint between a manhole frame and a manhole casing, a frame adapter for forming a sealing surface for said sleeve, the sleeve being secured to the sealing surface on the adapter and to the manhole casing by mounting bands, the sleeve including sufficient flexibility to allow for heaving of the frame with respect to the casing.

Abstract: A manhole cover gasket seal to seal a manhole cover in the opening of a manhole frame, the seal including a flat circular ring, an annular flange secured to the inner diameter of the ring and having a diameter substantially equal to the diameter in the opening of the manhole frame and a bead formed around the top of the ring and projecting slightly above the ring, the ring, flange and bead being formed as an integral unit of a resilient elastomeric material.

Abstract: An apparatus for stripping pressure-sensitive labels from a backing sheet including a label stripping assembly for initially stripping a portion of the labels from the backing sheet, a conveyor for transporting parcels in sequence past the stripping assembly, an elastic belt conveyor for stripping the labels from the backing sheet and transporting the labels to the parcels in timed sequence to the movement of the parcels on the conveyor, and a pair of pivotal roller assemblies for moving a portion of the elastic belt conveyor past the labels on the backing sheet to strip labels from the backing sheet.

Abstract: An automatic shell reloader of the type having a fixed platen and a die platen, the die platen having a plurality of dies for performing the reload function and being moveable toward and away from the fixed platen to reload a shell case, the improvements comprising a guard carried by a primer cap slide assembly mounted on the fixed platen to block the force of a detonated primer cap from reaching the die platen, and a primer cap storage assembly mounted on the die platen, the storage assembly including a storage tube having a number of spring biased fingers at the lower end for retaining primer caps in the tube and a cam mounted on the fixed platen in a position to engage the fingers to release one primer cap at a time from the tube.

Abstract: A sliding door support assembly having a preassembled track assembly including a split cylindrical elongate track having a flat surface on the top and a number of mounting brackets secured to the flat surface at spaced intervals and a number of support members for supporting an elongate track cover, the support members being mounted on said track assembly after the door has been mounted in the track assembly and being selected to correspond to a particular type of track cover.

Abstract: A hanger rod transfer assembly for transferring hanger rods from a magazine to the edge of a file folder blank, the transfer assembly including a pair of transfer wheels for each edge of the blank, each transfer wheel having a plurality of corresponding grooves for supporting hanger rods, and guide plates covering a portion of the peripheral surface of each of said transfer wheels to retain the hanger rods in the grooves in the transfer wheels and a pad positioned below each edge of the blank to move the edge of the blank into a position to receive a hanger rod as the hanger rod is released from the guide plates.