Abstract: A differentially cooled plunger cooperative with a mold for press forming glass articles and the method of cooling pressed glass articles formed in said mold by use of the pressing plunger. The plunger is designed so that cooling fluid may be supplied from a single source thereof to different zones or regions of the plunger for differential cooling of the zones or regions and of a glass article press formed by the plunger.

Abstract: An electrical cooking or heating unit comprising a plate of a glassy material including a selected portion thereof upon whose upper surface vessels are to be placed for cooking purposes. The lower surface of the selected portion of the plate is provided with at least one sinuous strip of a gold/platinum alloy which integrally forms the electrical resistance heating element for the heating or cooking unit. A porous and partially sintered overglaze or coating covers the heating element and the portion of the lower surface of the plate on which the heating element is provided, such glaze preventing or inhibiting cracking, peeling or agglomeration of the heating element to provide a resultant increase in electrical resistivity. The life of the heating or cooking unit is thereby substantially increased.

Abstract: A differentially cooled plunger cooperative with a mold for press forming glass articles and the method of cooling pressed glass articles formed in said mold by use of the pressing plunger. The plunger is designed so that cooling fluid may be supplied from a single source thereof to different zones or regions of the plunger for differential cooling of the zones or regions and of a glass article press formed by the plunger.

Abstract: An electrical cooking or heating unit comprising a plate of a glassy material inluding a selected portion thereof upon whose upper surface vessels are to be placed for cooking purposes. The lower surface of the selected portion of the plate is provided with at least one sinuous strip of a gold/platinum alloy which integrally forms the electrical resistance heating element for the heating or cooking unit. A porous and partially sintered overglaze or coating covers the heating element and the portion of the lower surface of the plate on which the heating element is provided, such glaze preventing or inhibiting cracking, peeling or agglomeration of the heating element to provide a resultant increase in electrical resistivity. The life of the heating or cooking unit is thereby substantially increased.

Abstract: A guide roller assembly rapidly adjustable to accommodate, at different times, lengths of different widths of tape, ribbon or similar material so as to maintain the centers of the widths of such lengths in alignment with a centerline extending about the periphery of the roller of said assembly midway between the ends thereof and during longitudinal movement of each said length over part of the periphery of the roller.

Abstract: An apparatus assembly for distributing and adjusting flow of cooling fluid to control the temperature of a glass forming mold used for forming generally funnel-shaped articles such as, for example, funnel members for glass television picture tube envelopes, the assembly including a cooling fluid distributor in the form of an orifice member or perforate baffle and a plurality of adjustable valves for selectively adjusting and directing the flow of the cooling fluid to and about different parts of the outer surface of the forming mold for selective temperature control of the mold during the forming of glass articles therein.

Abstract: A mechanism for handling and insertion, in surfaces of face plates or viewing panels for color television picture tubes for support of aperture masks, each of a plurality of relatively elongate support pins having a generally channel-shaped cross-sectional configuration, the mechanism being operable in cooperation with a heating means disposed adjacent said face plate for heating each of said pins prior to and for the purpose of the insertion thereof in said surfaces.

Abstract: A mechanism for automatically and sequentially feeding each of a plurality of pins, for supporting aperture masks adjacent the glass face plates or viewing panels of color television picture tubes, to a mechanism or gun for insertion of each of the pins into the glass of the face plates or viewing panels. The mechanism includes a rotatable turret or cylindrical pin magazine or canister which holds a relatively large quantity or plurality of the pins vertically stacked in columns adjacent the outer periphery of the turret or magazine for the pin feeding operations and which can readily and rapidly be removed from the mechanism and replaced by another full turret or pin magazine when the first one is empty of pins.

Abstract: A television picture tube face plate or viewing panel including a viewing area having a reduced thickness for weight reduction of the face plate or viewing panel and resultant savings in the quantity of glass required in the manufacture of such a face plate. A thickened annular area of the face plate, adjacent and surrounding the outer perimeter thereof, is preferably provided with a selected maximum thickness at or adjacent the ends of the minor axis of the face plate, a selected minimum thickness at or adjacent the diagonal axis of the face plate and an intermediate thickness at or adjacent the ends of the major axis of the face plate, the regions of the face plate at or adjacent such ends of said axes being the regions of the face plate having the greatest, least and intermediate stresses, respectively, when the face plate is part of an exhausted television picture tube.

Abstract: The present invention relates to decal applying and more specifically to an apparatus for and a method of stripping the backing paper of a water-soaked water-release slide-off decal from the transfer film of the decal and applying such transfer film to a surface of a dish-like article to be decorated.

Abstract: A method of heat treating a plurality of geometrically congruent and flat lens blanks made from a phototropic glass, such heat treating being performed for development of the phototropic properties thereof. A plurality of lens blanks are formed into a stack by alternately positioning and clamping similar areas between the flat surfaces of two flat, annular, spacer members. The stack is then rotated about the longitudinal axis oriented in a substantially horizontal position while evenly heating the lens blanks to the phototropic development temperature of the glass. The stack of blanks is then vertically positioned while continuing the heating thereof and part of each of the blanks sags into the hollow of the spacer member therebelow to form such part of each blank into a curved configuration for an eyeglass lens.

Abstract: Apparatus for and a method of preforming into an elongate mold charge a gob of molten glass issuing from the outlet orifice of a forehearth and delivering such elongate charge to the forming cavity of a forming mold with the virgin or untouched surface of the charge facing downwardly in such cavity thereby providing to the mold cavity a mold charge having one or a lower surface of high optical quality. A mothering or serving cup receives said gob from said outlet orifice and is horizontally moved to spread or preform the gob into the elongate mold charge with the upper surface thereof being untouched, and the cup is then inverted to deliver the charge to a mold cavity with said upper surface of the gob facing downwardly.

Abstract: A blank of a relatively thick material, such as corrugated cardboard or paperboard for example, foldable to form a carton, tray or the like having corners which are locked in their folded condition by selected edges of the folded material abutting and bearing against each other.

Abstract: A pin or stud for support of a shadow or an aperture mask in or on a color television picture or cathode ray tube envelope, such pin or stud comprising a generally channel-shaped member having side portions longer than the central portion of the member and such member having geometric symmetry both on opposite sides of a first plane extending through the center of the central portion of the pin parallel with a first pair of opposite edges of such portion and also on opposite sides of a second plane extending through said center parallel with the other or second pair of opposite edges of the central portion of the pin and normal to said first plane. A pair of corresponding ends of said side portions of the pin are adapted for embedment in said envelope.

Abstract: An improvement in a method of transferring or applying a decal design of a heat release decal or decalcomania to a flat surface such as the flat bottom surface of the concavity of a dish-like article and with only a limited amount or without an appreciable amount of the heat release coating surrounding the decal design being transferred to the flat surface. A mask of a thin resilient material, such as silicone rubber for example, is disposed adjacent the flat surface, such mask embodying a hole or opening having a shape or configuration geometrically similar to the shape of but slightly larger than the face of a pressure head used in applying the design so that, during the transfer operation, the transfer to the flat surface of any appreciable amount of the heat release coating surrounding the decal design is prevented.

Abstract: A method of inserting and sealing an end of an aperture mask support pin into the glass of a viewing panel for a cathode ray or television picture tube by heating the pin to the softening point temperature of the glass by use of a substantially flat or pancake type high frequency induction coil and an associated iron core. The iron core may be enclosed in a leak-proof jacket for supplying a coolant to the core for cooling thereof.

Abstract: A modification to an apparatus for trimming thermoplastic material surrounding the bordering edge of an article formed in a die or mold from a sheet of pliable thermoplastic material such as glass arranged over the die or mold which is supported by a mold or die carrier, such apparatus including a trimmer having a lower cutting edge and disposed above the die with the center of the trimmer in vertical axial alignment with the center of the die and cooperative with a trimming edge of the die when the trimmer is lowered for trimming of the article formed in the die. A pressurized hydraulic fluid cylinder vertically actuates the trimmer.

Abstract: Apparatus for clamping a length of a brittle material in preparation for severing thereof into shorter lengths without chipping thereof towards the end of such severing. A pair of bifurcated clamps or clamping members are correspondingly actuated toward each other by a pressurized fluid cylinder and associated piston rod, such cylinder being attached to a clamp support member to which one of the clamps is attached and the otherwise free end of the piston rod being attached to a second clamp support member to which the other of the clamps is attached. A pair of coil springs supports the clamp suppprt members in a vertically floating manner, such clamp support members slidably surrounding guide shafts for vertical alignment of the support members and the attached clamps.

Abstract: An assembly or apparatus for smoothing and removing bubbles of air or a solvent, such as water, for example, from between the transfer films of decals and the upwardly disposed surfaces of dish-like articles such as pieces of dish-like pottery ware, glass or glassceramic ware or the like to whose upper surfaces the transfer films have been applied as by hand or by a decal applying apparatus such as is well known in the art. The assembly comprises at least one stellate, stelliform, or star-like wheel including a plurality of rays or radial fingers of a resilient material such as rubber, for example, and the wheel or wheels are actuated and rotated so that the tips of the rays or fingers move across the transfer film, applied on a surface of a dish-like article, with a wiping or brushing squeegee-like action or operation to smooth the film and remove bubbles entrapped between the film and such surface of the article.

Abstract: The present invention relates to decal applying and more specifically to an apparatus for and a method of stripping the backing paper of a water-soaked water-release slide-off decal from the transfer film of the decal and applying such transfer film to a surface of a dish-like article to be decorated.