Abstract: A window operator and assembly method therefor wherein a stacked pull arm and gear are rotatably mounted on a bushing carried by a mounting base and the gear and pull arm are assembled to the mounting base with a controlled clearance independent of the tolerance of these components by use of a hardened metal bushing. The hardened metal bushing is forced into the deformable metal of the mounting base whatever distance is necessary to locate an exposed end of the bushing a fixed distance beyond the uppermost of said gear and pull arm and provide a surface against which a washer may be mounted and which overlies the pull arm and gear to hold the components in assembled relation with the controlled clearance.

Abstract: The invention relates to a structure for controllably discharging articles that are being continuously transported by a primary conveying structure. A discharge assembly is provided having a chute with an inlet and an outlet. Articles are diverted away from the primary conveying structure and delivered to the chute inlet. The discharge chute is mounted for rotation about a vertical axis and structure is provided for reciprocatively moving the chute outlet back and forth over an infeed portion of a secondary conveying structure to evenly distribute material in a serpentine path along the length of the infeed portion of the secondary conveying structure. In a preferred form, the secondary conveying structure has an associated trough for containing a cooling fluid.

Abstract: A centrifugal liquid pump includes an impeller and a hub for the impeller, whereby gases entrained in the liquid are separated from the liquid and collect near the hub by centripetal action. A shaft is connected to the hub for rotating the impeller, and a passageway extends axially through the shaft. A gas entry is provided near the hub in communication with the passageway. An air pump is provided at an opposite end of the shaft for evacuating the separated gases collected near the hub. The air pump is independent of and remote from the impeller and is in communication with the passageway extending axially through the shaft.

Abstract: A window operator and assembly method therefor wherein a stacked pull arm and gear are rotatably mounted on a bushing carried by a mounting base and the gear and pull arm are assembled to the mounting base with a controlled clearance independent of the tolerance of these components by use of a hardened metal bushing. The hardened metal bushing is forced into the deformable metal of the mounting base whatever distance is necessary to locate an exposed end of the bushing a fixed distance beyond the uppermost of said gear and pull arm and provide a surface against which a washer may be mounted and which overlies the pull arm and gear to hold the components in assembled relation with the controlled clearance.

Abstract: A resilient liner is provided on the particle supporting surface(s) of a vibratory conveyor system. The liner accounts for a live surface that counters the tendency of the particles, particularly those that are moist and sticky, from adhering to each other and the conveying surface. The liner is particularly effective in systems such as separating systems wherein the particles at various stages fall to other levels.

Abstract: A kit for handling undersized signatures in a packer box having a signature feeding station, a main drum assembly, a delivery drum assembly and a continuous signature carrying chain. The kit includes a pair of register stop extensions adapted to be disposed in cooperative relation with spaced apart register stops. It also includes at least one guide roller extension bracket adapted to carry a guide roller which is removable from the bracket normally supporting the guide roller and is securable on the guide roller extension bracket for rolling movement relative thereto. The kit further includes a timing adjustment feature for causing grippers to release signatures at a point generally corresponding to the remote end of the guide roller extension bracket. With this arrangement, a packer box can be modified for handling undersized signatures.

Abstract: A heat exchange apparatus which is particularly applicable for use in vehicles such as aircraft subject to high gravitational forces. A core provides superposed fluid flow paths extending longitudinally of the roll axis of the aircraft between opposite ends of the core and alternating in planes generally parallel to the pitch axis of the aircraft. Alternate ones of the flow paths carry a coolant between the opposite ends of the core, and the remaining flow paths carry a medium to be cooled. The alternate flow paths each include a plurality of flow passages extending between opposite ends of the core. A first fluid distributor at one end of the core evenly distributes coolant to the alternate flow paths. A second fluid distributor at the one end of the core evenly distributes coolant to the plurality of flow passages in each alternate flow path.

Abstract: A vibratory conveying apparatus is provided with an improved V-shaped trough which conveys material up an inclined path. The angled walls of the trough enhance the frictional forces between the particles of material which, when combined with the frictional forces between the walls and the material, increases the ability of the material to be efficiently conveyed up an inclined path. The trough has a surface with a high coefficient of friction which aids in the conveying action. The higher coefficient of friction may be obtained by the type of material used for the surface of the trough or may be obtained by providing corrugating, ribbing or the like on the surface. The conveying action with the V-shaped trough also abraids the material so as to clean and process the material.

Abstract: Gearboxes having bearings, gears, splines, and seals have been provided with a continuous flow of lubricating and cooling oil supplied through orifice jet units having orifices of a size to preclude clogging by core sand remaining in the cast housing of a gearbox. This has resulted in excessive oil in the gearbox and excessive heat rejection. An improved lubrication system for minimizing heat rejection in gearboxes has the orifices of the orifice jet units sized to deliver only the required flow to the components in the gearbox and a filter is associated with each of the orifice jet units to preclude core sand entrained in the oil and of a size to block an orifice from reaching an orifice. The method of minimizing heat rejection embodies the determination of only that amount of lubricating and cooling oil flow required for the bearings, gear meshes, splines and seals in the gearbox and sizing the orifices accordingly.

Abstract: The invention relates to a structure for controllably discharging articles that are being continuously transported by a primary conveying structure. A discharge assembly is provided having a chute with an inlet and an outlet. Articles are diverted away from the primary conveying structure and delivered to the chute inlet. The discharge chute is mounted for rotation about a vertical axis and a tandem-type cylinder is provided for reciprocatively moving the chute outlet back and forth over an infeed portion of a secondary conveying structure to distribute material back and forth across the width of the infeed portion of the secondary conveying structure as said secondary conveying structure moves the material continuously away from the chute outlet. The cylinder has separately extensible sections. One of the cylinder sections is extended and retracted by a control to reciprocatively move the chute about its rotational axis with a predetermined range.

Abstract: A pulley assembly is provided for an operating cord. The pulley has a body with a rotational axis and an annular outer surface concentric with the rotational axis. A cord retention member has a surface to be situated around the annular outer pulley surface in operative relationship with the pulley and extending more than 180.degree. around the annular outer pulley surface. Structure is provided on the pulley and cord retention member to cooperate with the cord so that the cord prevents separation of the pulley and cord retention member from their operative relationship.

Abstract: A mold for forming concrete having a bottom, a pair of side walls and a pair of end walls, all of plastic, and with the side walls and bottom being of integral one-piece construction and hinged together by living hinges defined by reduced thickness of the plastic panel. The ends walls are shaped with generally U-shaped channels dimensioned to lock onto the ends of the bottom and side walls whereby a watertight concrete mold is formed. The concrete mold is assembled by pivoting the side walls to an upright position relative to the bottom by means of the living hinges and the end walls are then secured to the bottom and side walls. The mold can be disassembled for removal of a formed concrete specimen by removal of the end walls and pivoting the side walls downwardly to a generally coplanar relation with the bottom to expose the test specimen for removal.

Abstract: This invention relates to a device for controlling the internal compression in a screw compressor and to a screw compressor equipped with a device for internal compression control. In the compressor housing (10) an axially movable sliding vlave (17) for controlling the internal compression is located in paralllel with the rotors on the discharge side thereof. In the position yielding the highest internal compression, the sliding valve extends over the major part of the length of the rotors and outwardly over the inlet end plane (18) of the compressor.

Abstract: A method of forming relatively large objects, such as refrigerator liners, by a solid phase forming process from crystalline-type synthetic resins, such as polypropylene. The invention comprehends utilization of stretch forming, vacuum forming, and pressure forming techniques in combination with controlled heating of different portions of the billet to provide desired differential thicknesses in different portions of the liner. The invention further comprehends the provision of the liner with biaxial molecular orientation in portions thereof subject to shock impact forces.

Abstract: An electrically compensated constant speed drive which is speed limited so that power flow through the speed compensation link is unidirectional includes a permanent magnet generator which is interconnected with a permanent magnet motor by a power converter. The permanent magnet generator and the permanent magnet motor are controlled by first and second independent control loops. The power converter includes an AC/DC converter coupled to electrical power windings of the permanent magnet generator, a filter coupled to the output of the AC/DC converter and an inverter coupled between the filter and electrical power windings of the permanent magnet motor. The permanent magnet generator, AC/DC converter, filter and the first control loop together develop a voltage on a DC bus.

Abstract: A deflection apparatus for cathode ray tube is provided, which comprises deflection yoke with guide grooves, deflection windings for scanning in one direction in said grooves, deflection windings for scanning in the other direction and an insulator between both types of windings. It attains high accuracy deflection with less distortion without any induced heating problem due to protuberances made relatively between grooves.

Abstract: A window operator having a base with an upstanding pivot pin having a bushing thereon and at least one component pivotally mounted on the bushing. The components are held in assembled relation by a captured washer and the washer has an outer annular portion formed to provide a controlled clearance. A method of forming the window operator comprises assembly of the pivot pin, bushing and pivotal component to a mounting base and the capturing of a washer beneath the head of the pivot pin and with an inner annular part of the washer engaging an upper edge of the bushing which extends beyond the upper surface of the pivotal component, followed by a deformation of the outer annular part of the washer to compress the pivotal component between the washer and the base followed by release of the compressive force to permit spring-back of the outer annular part of the washer to provide the controlled clearance.

Abstract: A card game puzzle including a supporting surface comprising a memory aid to be used at the option of a player. The supporting surface has a puzzle picture thereon and is adapted to support a plurality of cards. A plurality of cards are provided which are adapted to be arranged in rows and columns, and on the supporting surface at the option of the player, with each of the cards being rectangular in shape and having a first side with a different distinct segment of the puzzle picture thereon and a second side with identifying indicia such as the complete puzzle picture to be completed by arranging the cards in puzzle fashion thereon. The cards can be borderless and then properly arranged to complete the puzzle picture in uninterrupted fashion. In one embodiment, the card game puzzle includes a plurality of supporting surfaces and a plurality playing cards sets for multiple player card game utilization.

Abstract: An improvement in an actuator of the type having a slide plate with an L-shaped slot, guide structure for movement of the slide plate in a reciprocating path between locked and unlocked positions, structure for connecting the slide plate to a locking member so that the locking member follows reciprocating movement of the slide plate, a crank for rotation about an axis and having a pin offset from the axis, and structure mounting the crank to the channel so that the crank is rotatable back and forth about its axis through a predetermined range with the pin in the slot to thereby cause the pin to engage and shift the slide plate between its locked position and its unlocked position upon the crank being rotated. With the pin at the juncture of the two slot legs, the slide bar can be shifted to its unlocked position without rotating the crank. With the pin so situated and all drawers closed, the crank is jammed and cannot be rotated.

Abstract: A pivotable multiple socket for shovels comprising a rotatable socket member to receive the end of a shovel handle, the socket member being in the form of an adapter which itself seats in and is removable from the permanently mounted socket of the shovel blade, in which the rotatable socket member can be rotated to a plurality of different working positions. The rotatable socket member includes a tubular insert to rotatably seat in the permanently mounted socket of the shovel blade, a first tubular socket to receive the end of the shovel handle in axial alignment with the tubular insert of the socket member, and a second tubular socket for receiving the end of the shovel handle which extends at an oblique angle from the longitudinal axis of the tubular insert portion of the socket member. The socket member in accordance with this invention permits positioning the shovel blade at different angles to the shovel handle, both vertically and horizontally.