Abstract: A circuit tester having a low tension test circuit, and a high tension lamp, a series resistance in the high tension test circuit, a shunt resistance connected around the high tension lamp means in the high tension test circuit, a first connection device connectable to a selected one of the low and high tension test circuits, and, a second connection device connected to the low and high tension test circuits.

Abstract: A magazine for use with a fastener driving tool employing a strip of fasteners formed into a coil, and having a fixed portion to be fastened to such a tool, wall means forming a portion of said fixed portion for engaging such a coil of fasteners, a mounting member on the fixed portion along an axis centrally of the coil of fasteners, a movable attachment member incorporated in the mounting member, and movable between locking and releasing positions, a movable magazine portion defining wall means adapted to engage the coil of fasteners, exit means on at least one of the fixed and movable magazine portions, for exit of the fasteners, a slidable guide member formed on the movable portion, interengageable with the mounting member, and locking abutment means located inwardly of the guide member, for interengaging with the locking means on said fixed magazine portion.

Abstract: A drawer interlock apparatus for multiple drawers having at least one drawer locking cam for each drawer, which is pivotally movable between open and closed positions, a drawer pin on each drawer interengageable with the cam, when in the closed position, and being releaseable from the cam in the open position to permit the drawer to be opened, linkage connecting the cam with the next adjacent cam of a next adjacent drawer, such linkage being responsive to opening movement of said first mentioned cam, to prevent opening movement of the second mentioned cam.

Abstract: A vending machine for thin flat sheet articles wherein the article release mechanism comprises two pairs of diametrically opposed swingable trap doors, the trap doors being mounted on respective door mounting blocks and wherein the door mounting blocks incorporate recesses for registering with the article magazine, and article guides automatically aligning with the lower end of the magazine and extending below the level of the doors, whereby to guide individual articles from the magazines through the trap doors to ensure a precisely regulated feeding of articles.

Abstract: Exchanger means for exchanging a first fluid with a second fluid, in varying proportions and employs a first duct, carrying the first fluid, a second duct carrying the second fluid, and a transfer chamber connected to both ducts, through which some, or all of the second fluid is able to be transferred back into the first duct, and variable control means in the form of first and second damper blade means in the chamber which can be swung together, thus dividing the chamber and preventing transfer, and which may be swung apart to procure varying proportions of such transfer. The chamber also has inlet means for inlet of the first fluid and outlet means for discharge of the second fluid.

Abstract: A processing chamber having a predetermined cross-sectional area, and an overhead conveyor system extending therethrough, the conveyor system incorporating a plurality of movable support members or trollies, and a plurality of generally downwardly dependent carrier members extending from the conveyor system at spaced apart intervals therealong at least some of the carrier members having at least two releasable attachment means thereon vertically spaced apart from one another a predetermined distance, and there being a plurality of meat product hanger members, one meat product hanger member being releasably attachable to a said attachment means, and each of the meat product hanger means being adapted to support a predetermined load quantity of meat products, in spaced apart relation from other meat products supported on the other meat product hanger members, whereby on at least some of the carrier members, the meat products may be supported in separate load quantities, in vertically spaced apart relation from

Abstract: A random box closing apparatus of the type having a box closing and sealing station having a sealing head which is movable upwardly and downwardly to accommodate boxes of different heights and having a main conveyor adjustable for box width, and having a box sensing station for sensing the height of the box, and having a sensing conveyor adjustable for box width and for further sensing the width of the box, and thereby controlling the spacing of the main conveyor in the box closing and sealing station, in which the apparatus is characterized by height sensing means operable to sense the combined height both of the box and the upper closure flaps extending thereabove when open, and delivering a combined height signal responsive thereto, and movable carriage means upon which said height sensing means is movable upwardly and downwardly, at the box sensing station, and having signal communication means connecting between the height sensing means and the power operated movement means, whereby to move the box seali

Abstract: A display rack having a back wall, and at least two side walls, and having hinge means interconnecting between respective side walls and the back wall, such hinge means being located at spaced apart intervals whereby the side walls may be swung flat against the back wall for shipping, and may be swung away therefrom for erection, and having shelving dimensioned to fit between the two side walls when the same are swung apart and the shelving having fastening means integral therewith interengageable with the side walls whereby the shelving may be secured along either side edge to respective side walls, in supporting relation thereto, and at the same time interlocking such side walls together in predetermined spaced apart relation so that they are no longer swingable with respect to the back wall, and forming a rigid three-dimensional structure.

Abstract: A nozzle apparatus for use in an injection mold comprising a relatively massive body, having a central passageway extending axially therethrough, and a counterbore connecting therewith, having threads formed therein, and having a nozzle tip member, having threads at one end whereby the same may be threaded into said counterbore, and having a central passageway communicating with the central passageway in the body portion, and having at least one opening at its other end, for ejection of plastic therefrom, said body and said nozzle tip member being formed of a good heat conductive material, and a housing shell adapted to fit around said body portion and at least a portion of said nozzle tip member, and, support means formed integrally with said housing, for supporting said housing and said main body portion and said nozzle tip member therein in position.

Abstract: An air flow reverser apparatus for use in association with an air flow system having air supply and return port means, said apparatus comprising a main supply duct, and a main return duct, said ducts being connectable to said respective supply and return port means of said air flow system, at least two branch supply ducts communicating with said main supply duct, at least two branch return ducts communicating with said main return duct, supply damper means for selectively shutting off at least one of said branch supply ducts, while leaving at least one said branch supply duct open, return damper means for selectively shutting off at least one of said branch return ducts while leaving at least one said branch return duct open, and means interconnecting said supply and return damper means whereby when a selected one of said branch supply ducts is closed, a selected one of said branch return ducts is open, and power operated means for moving the same from one position to another simultaneously.

Abstract: A process for the scalding and de-hairing of hogs under improved sanitary conditions comprising conveying the hog in an essentially horizontal manner, along a predetermined treatment path, continuously spraying the hog while on such treatment path, with clean water at between 62.degree. C. and 63.degree. C., continuously rotating the hog while moving along such treatment path, continuously scraping the hog to remove hair while moving along such treatment path, collecting the water beneath the hog, filtering the water, passing it into an evaporation chamber, and evaporating the water to produce water vapor, removing contaminants from said evaporation chamber, and passing said vapor to a condenser chamber and continuously condensing said vapor therein to provide clean uncontaminated water, for spraying onto the hog as aforesaid.The invention further comprises apparatus for carrying out the process.

Abstract: A lock of the type having a plurality of locking bolts, having outer ends extending through openings in the door and inner ends located close to one another inside the door, and having a disc member, with arcuate slots and operating pins extending into the slots, and connecting with the inner ends of the bolts so that rotation of the disc in one direction will cause outward movement of the bolts, and rotation of the disc in the other direction will cause inward movement of the bolts, the lock having an operating lever swingably mounted adjacent the disc, and having one end swingable towards and away from it and connecting means between one end of the operating lever and a point on the disc spaced from its center of rotation, whereby swinging of the lever in one direction will be transmitted to the disc as a rotary movement in one direction, and swinging movement of the lever in the other direction will cause rotation of the disc in the other direction, and having means urging the lever in one direction, the l

Abstract: A rotary machine particularly intended for use as a pump comprises a two-lobe lenticular rotor rotatably disposed within a pump chamber defined by an annular wall with an inner surface having at least in part a cardioidal configuration. A rectangular drive plate on a shaft is disposed within an elongated drive slot in the rotor while a circular guide disc fixed on an end wall of the pump casing extends into a second elongated guide slot in the rotor. The second guide slot is perpendicular to the first slot so that, during operation, the rotor effectively reciprocates and rotates relative to the guide disc. If desired, two such circular guide discs can be provided, one on each end wall of the pump casing, for reciprocation and rotation relative to two such second guide slots in opposite faces of the rotor.

Abstract: A freestanding glass fibre antenna having at least two antenna sections, a lower section having a mounting base and a coupling at the upper end, and having linear radiating members of conductive material, and an upper section having a cooperating coupling at the lower end, and incorporating a single radiating element formed of conductive material, arranged in a helically wound coil fashion having a plurality of turns, and embedded permanently in the glass fibre material of such antenna, the coil wound radiating element being arranged to tune the antenna to the desired frequency range.

Abstract: An improved telescopic boom for a truck mounted hoist in which at least the middle telescoping section of the boom is fabricated from I-section structural steel having a central web, and upper and lower flanges, the flanges having inwardly facing surfaces lying in angled planes which are not normal to the plane of the web, and in which the trolley and fixed portion of the boom are fabricated of any other suitable structural material, and having at least two sets of identical rimmed wheels, one set mounted directly on the fixed section, and the other set mounted directly on the trolley, without the use of tilting arms, the two sets of wheels riding in opposite sides of the I-section material of the telescopic intermediate section, with the tread of the wheels carrying the load and with the rims providing lateral guidance thereby dispensing both with the mounting arms and with the lateral guide rollers.

Abstract: A multi-function hydraulic tool especially intended for use in automobile servicing operations comprises a hydraulic cylinder housing a piston. At least one arm is secured to the outside of the cylinder and projects axially therefrom. A seating is secured to the arm forwardly of the open end of the cylinder so as to support one member when axial force is applied by the piston to a different cooperating member so as to cause relative movement of such members. The tool can be used for a variety of purposes, for example, for removing a bearing from a shaft and its arm is usefully releasably secured to the cylinder.

Abstract: An air flow reverser apparatus for use in association with an air flow system having air supply and return port means, said apparatus comprising a main supply duct, and a main return duct, said ducts being connectable to said respective supply and return port means of said air flow system, at least two branch supply ducts communicating with said main supply duct, at least two branch return ducts communicating with said main return duct, supply damper means for selectively shutting off at least one of said branch supply ducts, while leaving at least one said branch supply duct open, return damper means for selectively shutting off at least one of said branch return ducts while leaving at least one said branch return duct open, and means interconnecting said supply and return damper means whereby when a selected one of said branch supply ducts is closed, a selected one of said branch return ducts is open, and power operated means for moving the same from one position to another simultaneously.

Abstract: A partition system having partition panels each of which is provided with one or a pair of outwardly directed connector grooves extending vertically from top to bottom of the panes at each end. Each groove is provided with a narrow open mouth and an enlarged interior. The narrow open mouth portion of each groove is oriented so that it is directed at an outward angle with respect to the end of the panel so that the pair of grooves are arranged in an essentially divergent manner. A connection member consisting of a continuous plastic extrusion is provided having a central web portion, and enlarged bulbous rib members extending down either end of the web, the rib members having a shape essentially the same as the cross-section of the connector grooves, and being adapted to be received within the grooves of two adjacent partition panels, whereby the panels may be joined together edge to edge, along either corner of an end of said panels.

Abstract: Hoist apparatus of the type adapted to be mounted on a truck adjacent the truck bed, leaving the truck bed clear, for use in unloading or loading the truck or the like, and comprising a boom, hoist means on said boom, a vertical support column, said boom being mounted on the upper end of said column, and said support column being rotatably mounted for rotating said boom, drive gear means located adjacent the lower end of said support column, rack means meshing with said drive gear means, guide means for guiding movement of said rack to and fro relative to said drive gear, housing means supporting said vertical column, and at least partially embracing said drive gear and supporting said guide means, and power operated means connected with said rack, and mounted on said housing, for driving said rack to and fro.