Abstract: Efficient heat sealing, particularly of thicker and/or heat shrinkable plastic materials, is obtained using a fluid heated and cooled heat-sealing member having a body of a material of low thermal conductivity and a strip of material of high thermal conductivity communicating with a heat exchange fluid passage therein.

Abstract: Apparatus for applying an elastomeric cover stock to an annular tire bead including a lower carriage for supporting the tire bead, an upper carriage mounted for movement to clampingly engage the tire bead against the lower carriage, a drive roller for rotationally moving the tire bead, rollers on the upper carriage for adhering the cover stock to the tire bead adjustably positioned with respect to the tire bead and adjustably resiliently biased thereat, and a stock feed and severing mechanism supplying a length of the cover stock sufficient for wrapping about the circumference of the tire bead.

Abstract: The invention pertains to method and apparatus for specimen preparation, in conjunction with which at least one specimen surface is produced on a test piece embedded, if required, in a casting-resin mounting medium through chip or slice removal of material and wherein the examined specimen surface is milled; especially, a method for the preparation of hard objects, and/or objects exhibiting differential hardness over the specimen surface, for electron scan microscopic and X-Ray studies. The invention further includes apparatus for preparing a specimen for examination which includes a milling head.

Abstract: A device to heat seal at least two thermoplastic layers using heat generated by the dielectric loss from a high frequency generator.

Abstract: A tape applicator including a frame with a rotatable mandrel for mounting one or more rolls of adhesive tape, the frame including a flat, elongated portion under which the tape passes and which acts to apply the tape positively and firmly to a selected surface as the applicator is moved thereover, and the frame further including guides at the location of the elongated portion through which the tape passes to insure accuracy in application and equidistant spacing between multiple tape strips. The guides also act as means for removing any tape lining as the tape is applied. The applicator is designed for one hand operation and is disposable, being constructed of inexpensive materials with the frame preferably formed from a flat cutout of paperboard or the like.

Abstract: A simple low cost building drum, free of axially movable parts for building tires and cylindrical articles having inextensible beads of given diameter therein but spaced axially any selected distance apart, has a single axially and circumferentially continuous radial expandable membrane overlying a thick-walled cylinder of deformable rubbery material the full axial length of which is expandable radially to wrap the membrane against beads placed about the drum and to divide the membrane into a non-inflatable center section and two inflatable end sections each axially outboard of a respective bead. The thick-walled cylinder is expanded radially by inflating an axially extending cylindrical sleeve within control members in the form of four semi-cylindrical strips which prevent bulging outward of the central portion of the thick-walled cylinder and which engage cylindrical flanges of a pair of end rings spaced along the drum's center shaft.

Abstract: Apparatus wherein a picker provided with an arcuate surface is supported for movement in a circular path at a radial distance from a predetermined center of rotation relative to a glue applying roll, a stack of labels and a transfer turret arranged about said predetermined center characterized in that there is means for effecting movement of the picker along said path and effecting rotation of the picker about the center of its arcuate surface such that said arcuate surface will have exclusively rolling tangential engagement with the surface of the glue applying roll, the surface of the label and the surface of the turret comprising, a fixed sun gear at said predetermined center having portions of different radius of curvature by means of which the rotation of the picker may be accelerated or decelerated, a planetary gear at the center of rotation of the arcuate surface of the picker for effecting its rotation, an idler gear in mesh with the planetary gear movable around the fixed gear in consonance with the

Abstract: The composition of etchant solution withdrawn from an etcher is monitored to diagnose a component deficiency. A light sensor is responsive to the color density of light rays passing through the etchant. A meter relay is responsive to the light sensor and if the color density of the etchant falls outside preset levels a pump is energized causing addition of a constituent component into the etchant. A second light sensor senses the color density of the light rays passing through the etchant after the addition of the constituent component. A second meter relay is responsive to the second light sensor. If no improvement of the etchant color is detected, the second meter relay causes the discontinuance of the constituent component addition and switches to the addition of another constituent component.

Abstract: The primer compositions consist essentially of a mercapto-containing organosilane or organopolysiloxane as one component and a titanic acid ester as the other. They are suitable for adhesively bonding a room-temperature-curing silicone rubber elastomer irrespective of its crosslinking mechanism to various substrates. The bond obtained by use of the primer composition is very strong and highly resistant to water or sea water even on prolonged immersion at high temperatures.

Abstract: To form carpet tiles that lie flat, a layer of thermoplastic material is doctored onto a carrier sheet and a piece of carpeting to be coated is laid on the layer. The carpet piece has dimensions slightly larger than the desired carpet tile. Heat is applied to the layer to bond the layer of thermoplastic material to the carpet piece and the bonded layer and carpet piece are cooled so as to form a coated carpet piece. The carrier sheet is then stripped from the coated carpet piece and waste is trimmed from the periphery of the bonded carpet piece so as to form a carpet tile. The carrier sheet is supported on a substantially flat surface during the heating and cooling steps so that the carpet piece is maintained in a substantially flat and relaxed condition and the warps and wefts of the carpet piece do not support the weight of the carpet piece.

Abstract: A method for forming a strong bond between a substrate and a solid thermoplastic polymer which comprises melting a thermoplastic polymer having an effective open time (a period after melting the polymer during which it remains aggressively tacky and bondable below the melting temperature), cooling it below the melting temperature, contacting the open polymer with a substrate and allowing the polymer to revert to its non-bondable, solid state. Also disclosed are a class of copolyesters suitable for use in the method and certain novel articles adapted for carrying out the method.

Abstract: An intaglio halftone gravure printing plate is made by contact-printing onto a sensitized carbon tissue a contact screen including a grid-like arrangement of minute dark dots each having the shape of a square rounded off at the four corners with the peripheries vignetted and having densities tapering from a maximum value of 3.0 at the center to a minimum value of 0.1 at the periphery, contact-printing a halftone positive onto the carbon tissue, contact-printing a light diffusion sheet and the halftone positive combinedly onto the carbon tissue, and developing the treated carbon tissue on a printing plate for subsequent etching of the cylinder.

Abstract: A process for producing a thin metal structure with a self-supporting frame, such as a grid, characterized by forming a galvanic resistant coating on a first surface of a carrier member with the coating exposing portions of the first surface adjacent the end of the carrier member and portions of the first surface in the configuration of the metal structure to be formed, depositing a layer of metal on the exposed portion of the first surface, removing the galvanic resistant coating, applying an etch resistant coating on the edges of thecarrier member and at least a portion of a second surface adjacent the edges of the carrier member and then selectively etching the carrier member to remove the carrier member except for that portion protected by the etch resistant coating to form the thin metal structure mounted on a self-supporting frame. The carrier member may either be a single member or a multi-layer member which has a metal coating forming the first surface.

Abstract: Improved apparatus is disclosed for bonding tread material to tire carcasses utilizing a flexible heat conducting belt one end of which is secured to the tread and the remaining length thereof encircles the periphery of the tread and, by virtue of its heat conducting properties, assists in the bond of the tread to the tire carcass. The flexibility of the belt, as contrasted to a rigid matrix, for example, also permits the belt to conform to the tread configuration. One form of the invention disclosed also includes a second belt laminated to the first and having more strength so that the required pressure to assist in the curing operation can be accomplished without using a conventional pressure chamber. A further form of the invention discloses a laminated metallic type belt which again has one end secured to the tread and is wrapped about the periphery of the assembled tire.

Abstract: A method of etching copper and copper alloys by means of an ammoniacal etching solution containing chloride ions and for regenerating this etching solution during this etching process by adding an ammoniacal compound, for example, in the form of ammonium hydroxide or ammonia gas, as well as hydrochloric acid and water to the etching solution in accordance with continuous measurements of the pH-value and the specific gravity of the etching solution.

Abstract: An apparatus for consolidating the components of pneumatic tires consisting of a left and right hand assembly, each having a base plate arranged to move toward and away from one another. Each assembly includes a platform that is pivotally mounted on a base plate with actuating means carried by said platforms. The actuating means has associated therewith a stitcher wheel that is capable of moving into and out of engagement with the tire body being built and also capable of moving in an arcuate path over said tire body.

Abstract: A closed torus tire in which the cord or wire reinforcement ply, or plies, surround the inflation chamber which can retain pressure without being mounted on a wheel. The reinforcement ply is continuous circumferentially of the tire and axially in the crown and sidewalls. The circumferential ply edges are lap-spliced in the inner wheel-engaging part, rather than being folded around bead cores. The tire is made without use of a building core of any kind, thus avoiding the cost and difficulty of removing such core from the completed tire. The tire is made by wrapping the reinforcement ply, or plies, about a cylindrical drum to form a sleeve. An inner liner is then wrapped about the sleeve, a reversal of normal tire building practice. One circumfferential edge of the sleeve is then moved outward and axially over the remaining sleeve, beyond the other, unmoved edge. The one edge is then moved inward and axially under the other edge to form the lapped splice.

Abstract: Splicing of one or more pairs of mating optical fibers is facilitated by a loose-fitting optical fiber receiving tube having a uniform interior cross section with at least one corner; the corner forms a fiber-aligning groove substantially parallel to the longitudinal axis of the tube. Mating fibers, introduced into opposite ends of the tube, are bent at an angle with respect to the longitudinal axis sufficient to bias the fibers against the tube's interior surfaces. In response to forces generated by the bent fibers, the tube rotates to align itself until the mating fiber ends are lodged against the fiber-aligning groove. This procedure effects transverse alignment of the mating fibers, after which the fibers, still bent, are moved toward each other into abutment.

Abstract: In preparing a dry, laminating impregnated paper or cloth by impregnating a paper or cloth with a resin solution containing a polymerization catalyst, a cross-linking monomer and, if necessary, a releasing agent, followed by drying, the use as the resin of a resin composition consisting of (A) 10 to 90 % by weight of an organic solvent-soluble diallyl phthalate prepolymer having an average molecular weight of 2,000 to 20,000 and a softening point of 70.degree. to 140.degree. C. which prepolymer has been obtained by partially polymerizing a diallyl phthalate monomer and separating and purifying the resulting prepolymer, and 90 to 10 % by weight, in total, of (B) an organic solvent-soluble non-crystalline unsaturated polyester and (C) an organic solvent-soluble benzoguanamine resin obtained by condensing in an alkaline reaction system 1 mole of benzoguanamine with 1 to 4 moles of formaldehyde, the weight ratio of (C)/(B) being up to 0.

Abstract: In the moulding of the tread portion of a pneumatic tire the radially inner surface of the mould cavity is defined by the radially outer surface of an annular former of elastomeric material. The former is contracted, a breaker assembly is built onto it and it is allowed to expand to stress the breaker. In the mould the former is further expanded and is held in compression between mould parts and the breaker to withstand moulding pressure. The former may have inflatable pockets to throw the breaker edges into contact with tire sidewall reinforcements.