Abstract: This invention is a single die by which thermoplastic insulating compounds can be co-extruded without any die for the first layer. It makes possible the extrusion of a high-density solid polyethylene skin layer over a cellular polyethylene primary insulation. Such a combination is difficult or impossible to make with a conventional co-extrusion die having a wire guide tip, one combination tip/die and a secondary extrusion die.

Abstract: This easel holds photographic paper in position for exposure during an enlarging operation. The paper is placed on a plate and pushed up against a shoulder at one end of the plate; after which a masking frame is swung down into contact with the paper to hold it flat. Retaining elements extending from the shoulder hold the paper flat on the plate and prevent it from curving upward along the shoulder where the paper could be bent and creased when the masking frame swings down into contact with the paper.

Abstract: This internally shielded telephone cable provides more efficient shielding for meeting near-end crosstalk requirements in carrier systems having expanded channel capacity and increase in equivalent frequency from 772 kHz to 1.576 MHz or higher. The improved shielding uses tapes bent into configurations that obtain greater shielding area from a single tape, and constructions that are less expensive than prior art and produce a mechanically stronger and more unitary cable structure.

Abstract: This invention makes extruded, vulcanized, high voltage cables insulated with thermosetting compounds at much higher rates of production and with superior insulation of reduced thickness and with reduced cavities or voids in the insulation. As the cable comes from an extruder, it passes into a curing chamber with a heat booster that quickly raises the insulation to a temperature at which it is cured much more quickly than with steam heating of the prior art. A high temperature liquid in contact with the insulation maintains the high temperature; and because of the greater curing heat, the cable can travel through the curing chamber at a faster rate and into a cooling tube where it contacts with a cooling liquid under high pressure. The insulation compound is treated to reduce the size of cavities; and the high pressure maintained by the curing and cooling mediums prevent expansion of cavities before the insulation is set.

Abstract: This specification discloses simplified wire payout apparatus for paying out wire directly from a box in which the wire is shipped, thus eliminating the necessity of providing mechanical payout equipment such as has been required on utility service trucks. For light-weight and low cost, a corrugated paperboard carton is used as a shipping container; and provision is made for paying out the wire without removing a spool, on which the wire is wound, from the box. The spool is preferably also made of corrugated paperboard.

Abstract: This invention is a wire and transport system for a communication cable manufacturing facility. Bobbins wound with insulated wire roll down a bobbin track from a location where the wires are drawn and covered with a layer of insulation. A number of full bobbins accumulate on the track, and they are transferred to an elevator that delivers them to a multi-layer inventory storage rack. Final alignment of the elevator with the tracks and compartments of the inventory storage rack is under the control of electronic apparatus; but the positioning of the elevator in the vicinity of the selected track or storage compartment is controlled by an operator who rides on a carriage on which the elevator shaft is mounted.

Abstract: This invention is a system for attaching pillows to an X-ray table or the like. A belt is connected with the pillow by construction that permits pillow-slips to be replaced for each patient without disturbing the permanent connection of the belt to the underside of the pillow. The belt extends to opposite sides of the X-ray table, where it can be looped around belt holders so as to bring end portions of the belt into position overlying the parts of the belt between the pillow and the belt holders. Detachable fastening means on the confronting surfaces of the overlying portions of the belt can be pressed together to hold the end portions of the belt in their looped positions about the belt holders and to maintain the pillow in a center position on the table.

Abstract: In high voltage power cables with metal shields that have lap seams with the seam edges movable with respect to one another, a bridging tape is frequently used over the seam and a plastic cable jacket covers the metal shield and the bridging tape. This invention provides a novel bridging element that covers the lap seam and that is made of soft and resilient material with edge portions thinner than the center of the bridging element to provide a streamline contour.

Abstract: This invention receives paired bobbins from a pairing machine, stores the various bobbins of a given color coding in separate compartments of a rack, and selectively discharges bobbins to an elevator in accordance with the demand from a cabling machine. The elevator extends for the length of the rack and receives the desired bobbins with the color coded pairs called for by remote control from the cabling machine. The compartments of the storage racks slope in a direction that cause bobbins to roll from the rack by gravity on to the elevator; and the elevator slopes to discharge bobbins by gravity to a floor conveyor that carries them to the cabling machine.

Abstract: This invention bonds the paper pages of books without applying adhesive to the paper. Clamping jaws press the paper sheets of a book together along the edges that are to be bound. The paper is a weldable paper and the sheets bond to one another where they are clamped in contact and raised to a welding temperature by heat of one or both of the clamping jaws, radio frequency energy or otherwise. The temperature must be at least as high as the welding temperature of the paper and not so high that it will scorch or otherwise damage the paper. The clamping and welding apparatus are combined with other book-making machinery and located along the course followed by the unfinished book at a station where the welding step can be done automatically and with substantial saving in the usual labor required.

Abstract: This invention makes possible the use of a very small pressure relief valve for protecting pressure gauges, thermometers, humidity indicators and other detectors from excessive pressure in an element in which the fluid is contained and of which the indicators must measure a characteristic. The pressure relief valve is located in an exhaust branch outlet from passages that connect the detector with the element in which the fluid is contained; and the relief valve has a housing with an inlet port of a cross-section much less than the cross-section of the passage from the element containing the fluid. This inlet port throttles the flow of fluid into the relief valve. By thus reducing the cross section of the inlet port, the relief valve can be as small and inexpensive as desired, commensurate with the flow required by the detector where the detector is of a nature requiring a flow of the fluid.

Abstract: Apparatus for the elimination of noxious ammonia fumes associated with diazo copiers includes a plenum chamber disposed about the output aperture of the machine developer chamber. Vacuum means are provided to draw the ammonia laden air out of this chamber. Preferably this apparatus is used in conjunction with a novel filter connected between the chamber and the vacuum means. The filter comprises a filter body of a material such as corrugated paper having a plurality of longitudinal substantially parallel channels, the walls of which are impregnated with a material, such as phosphoric acid, which will react with ammonia to generate odorless end products. A granular layer impregnated with such a material may be disposed in contact with the output end of this filter body.

Abstract: This invention is an improved apparatus for detecting residue that is left on a core rod of injection blow molding apparatus after blown articles have been stripped from the core rods at a pick-off station, and before the core rods are delivered to an injection station. The detecting apparatus moves in a straight line across a row of core rods extending from the face of an indexing head and while the core rods are stationary.

Abstract: This specification describes a fiber optic cable in which the delicate glass fibers are supported by carriers which protect the fibers from stresses imposed during the manufacturing process, the installation of the cable and the environmental conditions after installation. Microbending of the fibers is eliminated by having smooth supports and by protecting the fibers from contact with any structure that will stress them. Another feature is the provision of tension elements in the carriers with neutral axes in transverse alignment with the neutral axes of the glass fibers that the carriers support.

Abstract: This cord connector for printed wiring cards is self-latching to the printed wiring card so that the conventional hold down screws are no longer necessary. The shell halves that protect the connector contacts are interlocking to facilitate the original assembly of the connector.

Abstract: Rolling mills, especially for sheet metal, and also paper, rubber and similar rolling mills, require accurate control of the gap between the rolls since this determines the uniformity of the gauge of the material rolled by the mill. This invention provides a rolling mill with sensors that cooperate with the circumferential surfaces of the rolls, or rigid parts thereof, to detect relative movement of the rolls in directions that affect the roll gap and the gauge of the material being rolled. Response of the sensors operates a transducer to affect automatic correction of changes in the spacing of the rolls from one another.

Abstract: This disclosure relates to a poker table with two top sections that fold together for convenient storage and with two folding legs attached to each of the sections. The sections are connected together by invisible hinges and there are detachable fastening means on the sections to prevent folding when the table is set up ready for use. Chip-holding recesses in the top surface have fillers that may be used to give the table top a flush surface for use as a dining table. The preferred construction is a plastic molding for each section and a polygonal shape with the recesses and fillers corresponding to the shape of the polygon.

Abstract: This invention is for two probe hose connector fittings for tapping beer kegs that have a keg fitting with check valves for preventing flow of beer and gas until the probes are pushed down into position to open at least the beer valve. The probes are tubes, and in the prior art such tubes were cut diagonally across their lower end portions to form a valve engaging surface. This surface at the lower end of the tube was merely the end face of a part of the circumference of the tube and easily damaged because of its lack of inherent strength. The present invention makes the probes from bar stock and provides a construction that provides ample open area over part of its cross section for the flow of beer.

Abstract: In electronic wrist watches in which figures for the time are displayed by light emitting diodes, and in watches with liquid crystal displays where the display is illuminated by a light emitting diode, it is necessary to have the diodes normally unenergized in order to conserve battery power. A switch must be closed to energize the diodes when the display of time is desired. Since the hand of the wrist on which the watch is worn cannot reach the switch, it is necessary for the wearer of the watch to use his other hand to operate the switch and thus both hands are effectively involved in order to tell the time. This invention provides the watch with an acceleration-responsive switch that permits display of the time by a quick movement of the wrist and without involving any manual operation.

Abstract: Electrical cables that carry higher voltage require insulation of greater thickness. This invention extrudes the insulation over a cable core and extrudes it in superimposed layers which fuse to one another to prevent formation of voids within the insulation. The insulation applied in each superimposed layer increases the impulse breakdown stress in volts per mil of insulation thickness. A high voltage cable for any given voltage can, therefore, have a thinner insulation if the insulation is applied in layers according to this invention instead of being applied in a single layer in accordance with the practice of the prior art.