Abstract: Device for the internal machining of a tube comprising a mobile assembly which can be located in the tube and having a first part with at least two centering bearings and two rotors, and a second part linked in radially sliding manner with the first part and having a machining tool able to machine the interior of the tube, one of the said rotors driving the machining tool via a transmission shaft and the other of the said rotors rotating said second part; as well as a fixed assembly arranged around the tube and having first and second magnetic devices, each establishing a rotary magnetic field able to rotate the two rotors and a third magnetic device establishing a rotary magnetic field able to displace the said second part radially with respect to the first part, while rotating in phase with the second part.

Abstract: Two types of choke assemblies are provided to enable a shotgun of specific gauge to be modified in the field to receive a shotgun shell of smaller gauge and also to provide a choke of desired characteristics to suit the needs of the shooter, as for skeet or trap shooting or hunting. Each choke assembly comprises an aluminum tube insertable into the breech end of the shotgun barrel and has integral external bosses to ensure a snug fit. The breech end of the tube is chambered to receive a shotgun shell and the muzzle end of the tube is internally threaded. In one type of choke assembly, a choke is screwed and glued in the threaded tube end at the factory and the entire assembly is installed in the shotgun in the field. Thus, with a plurality of tubes of the same gauge, each would have a different choke permanently attached.

Abstract: A hand-held manually-operable tool is disclosed for installing a two-piece expandable plastic fastener (including an expandable body and an insertable pin) in a panel hole. The tool comprises a hand-held housing having a hollow barrel from which a spring-biased hollow plastic sleeve projects. A pushrod within the hollow sleeve is movable with the housing. The sleeve tip releasably engages and supports either the body or pin of a fastener manually mounted thereon and aligns the pin with the pushrod which subsequently forces the pin into the body to effect expansion. The sleeve tip end has either resiliently flexible legs to engage the body or resiliently flexible compressible foam rubber strips to engage the pin. In use, the tool directs the body into the panel hole and is pressed to cause the sleeve to retract so that the pushrod can force the pin into the body to effect body expansion.

Abstract: A method is disclosed for operating a large motor-driven refrigeration gas compressor which has independently movable suction and discharge slide valves to prevent undesirable, possibly damaging hydraulic pressure build-up caused by sealing oil remaining in the gas compression chambers during compressor start-up. While the compressor is started and brought up to full speed, the suction slide valve is disposed in fully unloaded position to fully open the gas suction port and the discharge slide valve is disposed in position to fully open the gas discharge port to enable excess oil in the gas compression chambers to exit freely through the compressor gas discharge port before oil pressure build-up can occur. When the compressor is at full speed, the suction slide valve is positioned to maintain a desired gas suction pressure and the discharge slide valve is positioned to equalize gas pressure between the gas compression chambers and the compressor gas discharge port.

Abstract: A method of and apparatus for controlling automatic soldering system in which respective units of the automatic soldering system are controlled preparatorily to reduce the waiting time until main driving to zero. In the soldering driving time, the temperature of the work itself is precisely controlled to the predetermined value by means of directly measuring the temperature of the work and controlling the preheater to bring the soldering characteristic in the next soldering step into the most optimal value in compliance with the size and the like of the work to be soldered.

Abstract: A vehicle seat assembly comprises a support frame attachable to a vehicle cab floor by a guide/slide rail assembly. A manually actuatable horizontally swingable lever mounted on the guide/slide rail assembly alongside the seat releasably locks the entire seat assembly is selected fore and aft positions. A seat and pivotally interconnected backrest are pivotally, slidably and resiliently mounted on the support frame. The seat is horizontally shiftable fore and aft on the support frame to vertically tilt the backrest. A manually actuatable vertically pivotable backrest adjustment bar is mounted on and extends horizontally along the front of the seat and releasably locks the seat on the support frame so as to maintain the backrest in selected tilt positions.

Abstract: The molding apparatus of this invention produces a one-piece molded unit that provides a two-piece plastic fastener whereof one piece is a grommet having a head with a flat front surface and forwardly projecting legs defining a sidewardly and forwardly opening slot, and the other piece is a pin receivable through the head and forwardly slidable in the slot to an operative position holding the front ends of the legs flexingly diverged. As molded, a front end portion of the pin is connected with the head by a frangible flashing. A forwardly opening radially extending groove in the front of the head, opening from one side of the slot, defines a substantially flat forwardly facing groove surface that is rearwardly offset from and parallel to the front surface of the head and is flush with the front end surface of the pin. The molding apparatus comprises two die members, each having a flat surface to which opens a cavity defining one longitudinally extending half of the unit that includes a half of each leg.

Abstract: A fastener for securing primary and secondary panels together comprises a molded plastic one-piece U-nut and a molded plastic screw. The nut comprises two plates, each having a plate hole therethrough, which face each other with their plate holes in registry and which are integrally and resiliently interconnected along one edge in spaced apart relationship. One plate supports on its outer side an integrally formed nut shank having an internally threaded bore in registry with the plate holes. The other plate supports on its innerside an integrally formed annular shaped sloped lock tab which surrounds its associated plate hole and holds the nut in place on the primary panel. The bore thread is formed in discrete thread sections and locking teeth are formed on the undersides of the bore thread sections. The screw comprises a threaded screw shank having a screw head at one end. The screw thread has locking teeth formed on the upper side thereof at intervals therealong.

Abstract: A charging method of an electrostatic image developer which makes it possible to electrically charge an insulating one-component developer or a two-component developer consisting of a toner and a carrier to a desired charged state and which comprises introducing the developer into a charging space between a pair of sheet-like charging members opposing each other in which space an alternating field is formed, and oscillating the developer by means of the alternating field for charging it. A developing method of a non-contact or contact system which develops the electrostatic image by use of the developer charged electrically by the above-mentioned charging method.

Abstract: A pair of wire feed clamps are affixed to parallel flights of a pulley-supported steel cable which is axially driven back and forth by an oscillatably rotatable cable drum whereby the wire feed clamps, which reciprocably move in opposite directions, feed a wire strand along a first path. The cable drum is driven by a drive rod reciprocably movable by an orbiting crank pin on a support member which is adjustably mounted on a motor-driven rotatable feed crank. Crank pin orbit determines drive rod stroke, cable drum position, wire feed clamp spacing and travel, and wire segment length. A locking mechanism releasably locks the support member (crank pin) in desired adjusted positions. Two laterally spaced-apart conveyor assemblies, each having conveyor clamps for receiving the wire strand, convey severed wire segments along a second path perpendicular to the first.

Abstract: Apparatus is provided for repeatedly severing cable segments of desired lengths from a continuous strand of thick multi-conductor cable for stripping desired lengths of tough outer insulation sheath from the strand and segment ends, and for coiling the stripped segments. The apparatus comprises a cutter/stripper machine, a long-strip attachment mechanism, and a coiling mechanism. The cutter/stripper machine comprises an axially retractable/extendable wire guide tube into which the cable strand is fed while the tube is extended and a movable clamp grips the lead end of the strand. A stationary clamp grips the exposed portion of the strand when the tube retracts. A cutter/stripper head mechanism between the clamps severs the strand and scores the insulation sheath. The cutter/stripper mechanism and the movable clamp move away from the stationary clamp at different rates of speed to effect stripping, open to release the stripped cable segment, and then return to their starting positions.

Abstract: A seat suspension for resiliently attaching a seat assembly to a support frame on a vehicle so as to cushion the ride for the seat occupant comprises: main biasing springs operatively connected between the seat assembly and support frame to initially absorb energy and limit descent as the seat assembly is forced downward; auxiliary biasing springs, including a "hard" spring and a "soft" spring, to subsequently absorb energy and further limit descent after the main springs have been compressed a predetermined amount; and a shock absorber connected between the seat assembly and support frame to dampen vertical motion. A preloading apparatus is provided for adjusting or preloading the main biasing springs to take into account the weight of the seat occupant. A height adjusting apparatus is provided to adjust the height of the seat assembly and associated biasing springs relative to the support frame.

Abstract: A refrigeration system, and a method for operating the system, having a two-stage compressor for supplying refrigerant to a cooling coil, and having a desuperheater unit disposed between the two compressor stages. This desuperheater unit includes a container having heat exchange fluid therein and a coil, disposed in the heat exchange fluid, through which the refrigerant passes. During normal operation of the refrigeration system, both compressors are running. The desuperheater unit between the two compressor stages reduces the temperature of the compressed refrigerant before it reaches the second stage. The temperature of the heat exchange fluid is correspondingly increased in the course of the heat exchange. Also during normal operation, frost accumulates on the cooling coil, which is removed by a control device initiating a defrost cycle. When the defrost cycle begins, the first stage compressor is turned off while the second stage compressor continues to run.

Abstract: A mobile crane comprises a vehicle chassis mounted on balloon tires, a crane boom pivotally mounted on the chassis, and a double-acting boom hoist cylinder connected between the chassis and the boom for raising and lowering the boom. As the mobile crane traverses rough terrain or accelerates or decelerates, its mass causes the chassis to deflect (bounce or porpoise) relative to the terrain. A deflection reduction system, which presupposes that the boom is unrestrained and free to pivot (deflect) relative to the chassis, comprises a deflection reduction module mechanically mounted on the outside of the boom hoist cylinder and selectively operable valves for hydraulically connecting the module thereto.

Abstract: A one-piece molded plastic reusable internally threaded anchor nut removably insertable in a mounting hole in a workpiece and adapted to receive a screw comprises two sections which are joined together by an integrally formed web or hinge. When the sections are folded together, they define an internally threaded screw-receiving passage and an external releasable locking mechanism for securing the anchor nut in the mounting hole. In one embodiment the portions defining the screw-receiving passage are bifurcated and expand outwardly as the screw is inserted so as to cause the external locking mechanism (i.e., in the form of slots on the exterior of the bifurcations) to engage the edge of the mounting hole in which the nut was previously inserted. In other embodiments, the external locking mechanism (i.e.

Abstract: Programmable apparatus makes finished wire harnesses or sub-assemblies therefor from segments of insulated wire which may differ in length, gauge or insulation color. The apparatus includes a selector module which draws wire strands from a plurality of wire coils and presents them in a desired sequence to a wire loader module which then feeds a desired length of each strand to a conveyor end and then severs it. The conveyor comprises two laterally spaced conveyor units, having a releasable wire guide therebetween, which releasably grip each wire segment near its opposite ends. Stripper modules and terminal presses alongside the two conveyor units enable selective stripping and terminal attachment at either or both segment ends. A wire double associated with a conveyor unit is selectively operable to group the ends of two or more segments in that conveyor unit so that a single terminal can be attached thereto.

Abstract: Apparatus is provided for controlling the level of steam condensate in a steam retort wherein sealed cans of food are exposed to incoming steam. The apparatus comprises a pneumatically actuated condensate drain valve which is controlled by a solenoid valve and opens to drain condensate if it reaches a dangerously high level, an alarm to indicate when the high level is reached, a recorder to provide a continuous permanent record of condensate level and drain valve status, and an electric control system for sensing condensate level and operating the solenoid valve, the alarm and the recorder in accordance therewith. The electric control system includes a condensate level sensor in the form of a one or more float-operated magnetically-responsive reed switches mounted in the retort. The sensor comprises a hollow stem in which a reed switch is potted in elastomeric non-displaceable material.

Abstract: A protective/decorative liner panel is mounted on a sheet metal support panel by molded plastic fasteners which allow the liner panel to be subsequently detached and reattached. Each fastener comprises a pin which is initially joined to a hollow grommet by a frangible web which aligns the pin shank with a bore in the grommet. The pin head is manually and twistably engageable with an installation hole in the liner panel and then the grommet is axially engaged with an installation hole in the support panel as the liner panel is moved toward the support panel. A hammer blow on the pin head fractures the web, forces the pin shank into the bore and moves the liner panel to its mounted position relative to the support panel. Serrations on the pin shank frictionally engage the bore wall to hold the pin and its attached liner panel in mounted position.

Abstract: A multiple system circular knitting machine for knitting stockings, having a reciprocating device for knitting the heel cup using at least two feeds. The needles are advanced solely by jacks in the reciprocating mode, in the rotation mode they are controlled solely by needle advancing cams. A high knitting speed in the rotation mode as well as in the reciprocating mode is achieved by providing that the advancing cams used for advancing the needles in the rotation mode are deactivated in the reciprocating mode.

Abstract: An image reproducing apparatus wherein latent images are formed on an image retainer by a plurality of latent image forming device and the latent images are developed by developing means to which a developing bias is applied. The developing bias can be applied in accordance with the difference of the latent image forming device. One of the latent image forming device is a continuous tone latent image forming device and the other is a dispersed tone latent image forming device.