Abstract: An improved method of manufacturing or retreading pneumatic tires is disclosed wherein a precured tread component is bonded to a tire carcass or casing primarily by utilization of the residual heat in the precured tread component. The method includes the steps of molding or vulcanizing the tread in an apparatus such as a mold or other conventional type device designed to form and vulcanize a tire tread with or without the tread design. The method also includes providing the new tire carcass in finished form or a buffed casing, except for the tread, and conveying the precured tread at an elevated temperature to the tire carcass and applying the same thereon. In applying the tread to the carcass, the carcass is mounted on a mechanism capable of rotating the tire and precisely guiding the heated tread onto the carcass, and also includes stitching the tread to the carcass and using an intermediate bonding medium which is known in the trade as cushion rubber.
Abstract: Guiding of narrow strip components of yieldable material is accomplished by applying a gentle drag to the strip which is greater near its edge more distant from the guide line or plane than in the strip closer to such guide line or plane. The drag is applied by positioning soft bristle brushes in an apparatus in a guide frame one sidewall of which provides the guide plane while the strip is continuously supported on a floor plate perpendicular to the plane. The strip can be supported by an air film introduced between the strip and the floor of the guide frame. A simple mechanism for swinging the brushes into and out of operating position is also disclosed. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.
Abstract: A tape dispenser for applying paper lined electrically conductive pressure sensitive adhesive tape or foil on a flat surface for forming a part of an electrical alarm system. The dispenser includes a housing having a tape storage chamber in which is rotatably mounted a roll of paper lined pressure sensitive adhesive foil. The housing has an extension on the front side thereof through which the tape is dispensed. A pressure member is mounted on the housing extension over the point at which the tape is discharged from the housing extension, for use in pressing the tape on a flat surface as it is discharged from the dispenser. The dispenser includes means for stripping the paper liner from the foil as the foil is fed from the roll in the dispenser.
Abstract: A method and apparatus for manufacturing optical fiber ribbons featuring an optical fiber payout arrangement for directing a plurality of optical fibers into parallel paths in a predetermined plane of travel; a vacuum assisted fiber guide for accurately positioning the fibers into a precise, coplanar parallel array; means for bringing together the arrayed fibers and a ribbon-like supporting medium to form an optical fiber ribbon with outer segments of the supporting medium extending beyond the outermost fibers; cutting means for separating the outer segments of the supporting medium for the optical fiber ribbon; and means for advancing the outer segments to thereby advance both the ribbon-like supporting medium and optical fibers in unison through the manufacturing apparatus.
February 7, 1977
Date of Patent:
June 20, 1978
Bell Telephone Laboratories, Incorporated
William Lamar Parham, Morton Jefferson Saunders
Abstract: Apparatus for uniting exposed photographic roll films into a continuous web which is already for transport through a developing machine has a housing which is lightproof and has two inlets, one for admission of cassettes which contains exposed films and the other for reception of exposed films. Successive cassettes which are introduced through the first inlet are conveyed into the range of a film removing mechanism which automatically removes the films, without breaking the respective cassettes, and the removed films are transported to a splicing device. If the position of roll film in a cassette is such that the film cannot be expelled by the removing mechanism in the housing, the cassette is opened in a darkroom and the film which is removed from the opened cassette is introduced though the second inlet.
Abstract: An etching device uses a gas activated by a plasma for etching a semiconductor element. The apparatus includes object feeding and etching chambers formed on the opposite sides of an airtight flat chamber and a support plate rotatably mounted in the flat chamber to bring the semiconductor element from the feeding chamber to the etching chamber in which the semiconductor element is etched by the vertically flowing activated gas.
Abstract: A method and mechanism for preparing individual reclosable thin plastic bags with rib and groove profiles delivered in unengaged position on the finished bag, whereby said bags are made from a continuous supply of layers of film having critically shaped small rib and groove profiles on facing surfaces thereof interlocked with each other and continuously advancing the layers of film and inserting a fixed separating finger between the rib and groove profiles so as to draw them apart, maintaining the profiles in alignment by grooves which do not press the profiles flat but carefully guide them laterally, guiding the film profile layers toward each other and then immediately pressing the profile layers together with a sealing and cutting means following the finger, so that the profiles are interlocked at the location of sealing only.
Abstract: A process and structure are disclosed whereby dopants are used to surround crystalline defects in a semiconductor crystal thereby creating a PN junction which isolates the defect site from the remaining semiconductor substrate and preventing charge flow through the defect into the potential well of a charge coupled device structure.
Abstract: A linear saturated crystalline polyester of an acid moiety and a moiety of a dihydric alcohol, at least 40% of the acid moiety being a terephthalic acid moiety, said polyester containing moieties of 1,4-butanediol and 1,6-hexanediol, the ratio of the 1,4-butanediol moieties to 1,6-hexanediol moieties being 10:90 to 90:10; the use of such polyesters as a fusion coating mass, particularly in securing textile substances to a substrate.
Abstract: Novel pleat assemblies are formed in the heading of a drapery by simultaneously forming folds of controlled size in said heading and cohesively bonding said folds to a backing strip extending the length of the pleat assembly. The drapery is disposed face up during the process.The pleat-making apparatus comprises a shaping electrode, a support electrode, and fold-forming means, said shaping electrode being adapted to be urged downwardly into straddling disposition about said fold-forming means and into contact with said support surface electrode.
Abstract: Photographs and other indicia-bearing opaque sheets of paper are laminated to molded articles by:(a) positioning the opaque sheet of paper betweeen two flexible sheets of uncured catalyst-containing thermosetting melamine-formaldehyde condensation product, to form a layup;(b) applying the layup to a surface of a shaped three-dimensional article formed of a partially cured catalyst-containing thermosetting melamine-formaldehyde molding resin, with the indicia-bearing surface of the opaque sheet facing away from said article; and(c) applying heat and pressure to the assembly to cure the condensation product and complete the cure of the partially cured resin.
Abstract: The machine is for aiding in attaching stiffening elements or stays to shirt collars or to inserts which are later attached or positioned inside the outer surface of the collar. The stays are first stamped from sheets of hard thin flexible material such as a polyester plastic and coated on at least one side with a film of heat sensitive adhesive. The stays are stacked in a magazine with the side containing the adhesive facing either upwardly or downwardly depending on which of the collar elements the stay is to be attached to. Each end of the collar, or liner, is tautly drawn over a thin shelf of the same configuration as the outline of the collar. A machine element will move the lower most stay from beneath the stack and position it within a channel to be engaged by another machine element and moved into position within the collar or liner where it is to be attached.
Abstract: A method for repairing or retreading a vehicle tire comprising the steps of filling a repair region with vulcanisable rubber, covering the repair region with a flexible cover attached around its edges to the tire with an adhesive, piercing the cover with a suction needle at points where air or other gases have accumulated, sealing of the openings made by the needle, and heating the repair region to vulcanize the repair rubber.
Abstract: The etch rate of silicon dioxide, particularly thermally grown silicon dioxide, in boiling phosphoric acid, can be controlled by deliberately adding additional silicate to the acid. For thermally grown silicon dioxide, the etch rate can be reduced from about 5A per minute with no added silicate, to about 0.5A/minute with 1 gram of added silicate to about 1 liter of acid.
Abstract: A process for lining an air-permeable container, such as a paper cup, with a thermoplastic foil by directing a warm pressurized stream of gas to press the foil into place and varying either the flow rate or temperature of the gas stream or both to guarantee the foil shape within the container while it is thus controllably cooled and solidified. The apparatus includes a controllable discharge valve, such as a relief valve formed at the edge of a spring loaded cover through which gas is supplied, for allowing a faster gas flow for cooling than used for deep drawing the foil. Either one or two gas supplies may be used. In the case of two, the gas supply for cooling is at a higher pressure than that used for deep drawing and is preferably at a lower temperature.
Abstract: An apparatus for attaching a thermoplastic fitting to the side wall of a pipe is disclosed. The apparatus is made up of a generally U-shaped frame having legs supporting two spaced pipe clamps. The frame supports a fitting holder on a springloaded rod by which a controlled force can be applied on the fitting while fusing the fitting to the pipe. The fitting can also be moved toward and away from the pipe in order to insert and remove a heating mechanism to melt the plastic.
Abstract: A new and improved developing solution for two-component light-sensitive diazo-type copying materials is described. The solution is a substituted organic diamine formulation which produces dry, high quality diazo prints rapidly, replacing conventional dry ammonia gas systems. The preferred diamine is N-(2-hydroxyethyl)-ethylenediamine alone or with diethylaminopropylamine.
Abstract: A rigid fixed diameter cylindrical drum for building a tire band, i.e., a straight cylindrical ply assembly without bead rings or other circumferentially inextensible elements subsequently to be a part of a complete tire, is enabled to release the band built thereon for coaxial movement of the cylindrical band off the drum. The cylindrical surface of the drum is knurled in a coarse diamond-toothed pattern. Perforations or orifices for air pressure and flow are also provided. The foregoing abstract is not to be taken as limiting the invention of this application, and in order to understand the full nature and extent of the technical disclosure of this application, reference must be made to the accompanying drawing and the following detailed description.
August 20, 1976
Date of Patent:
May 23, 1978
The Goodyear Tire & Rubber Company
Christopher E. Christie, Eddie B. Steffey
Abstract: An optical fiber band comprising a pair of thermally sealed thermoplastic films with a plurality of optical fibers in side-by-side relation and following undulate paths embedded therebetween, and a telecommunication signal cable formed by winding a plurality of such bands around an insulated metal rope. The thermoplastic films and the fibers are fed between rollers or cylinders while the fibers are undulated. The films are heated to their softening temperature on at least parts of their facing surfaces prior to reaching the cylinders. The films may each be composite films of different temperature characteristics or may be wider than the final band, heated only at their central portions and then trimmed to the final band size.
Abstract: In a method for feeding reinforcing strand when making a tubular product of plastic or other synthetic material, comprising supplying helically a supporting strand during rotation of a tube blank and applying a longitudinal reinforcing strand to the blank, the longitudinal reinforcement strand is in form of pieces cut off from a continuous strand after abutment thereof against the supporting strand. The continuous strand gradually displaces the cut off lengths of strand during the rotation of the tube blank. An apparatus for carrying out the method comprises means for feeding support helically around a rotating tube blank, means for feeding portions of additional reinforcing strand oriented in the direction of the tube blank to place the portions between the supporting strands and the tube blank, and means for cutting off said axially orientated reinforcing strands. The cutting is carried out when the strand portion is held by at least one supporting strand.