Abstract: The take-out mechanism on a glass container forming machine is operated by the vertical reciprocation of a fluid motor. The movement of the tongs into position to grasp a new container is controlled so that the tong arm which is swinging through an arc of 180.degree. degrees, is cushioned in its final movement so as to avoid excessive vibration of the mechanism.The pressure introduced into the motor for moving the tong arm into position over the dead plate is also connected to a second piston which is spring-biased in relation to the piston rod of the motor. When the tong arm has completed its movement and released the container at the dead plate, the pressure is discontinued at both the motor and the second piston which results in the rod of the second piston actuating the motor rod to cause the tongs to be lifted a predetermined amount.

Abstract: Apparatus for modifying a drive system for a lehr loader in which a rotating cam functions to raise and lower a pusher bar for moving ware from a cross-conveyor onto a lehr belt, with a crank arm being connected to the rotating cam and the pusher bar to effect forward and reverse movement of the loader bar. In this arrangement, the effective length of the crank arm which is moving the loader bar forward and backward in response to rotation of the rotating cam, is changed by having its connection to the rotating cam shiftable in response to the rotational position of the rotating cam. This changing position is accomplished by having the crank connected to the rotating cam through a radially extending slot, with the position of the crank connection in the slot being regulated by a stationary box cam that circumscribes the path of rotation of the rotating cam.

Abstract: The present invention relates to a method for initiating the preheating of pulverous materials in a tubular heat exchanger prior to their introduction into a melting furnace, with particular application to the recycling of all of the vitrifiable starting materials through the heat exchanger to eliminate moisture therefrom prior to delivery to a tank furnace for glass making to raise its entry-level temperature and improve furnace efficiency. The method involves rapidly recirculating all of the moisture-containing pulverous glass batch material through the open-ended tubes of a tubular sheet exchanger to heat the same and collect and remove moisture therefrom prior to initiation of delivery of any of the glass batch material in preheated condition to the glass melting furnace. The subject invention, as hereinafter described, is of particular utility to the glass industry, but it is to be understood that it is also applicable to other types of preheaters and furnaces.

Abstract: The present invention relates to a method for preheating of pulverous materials in a tube heat exchanger prior to their introduction into a melting furnace, with particular application to the delivery by gravity of the vitrifiable starting materials through the heat exchanger to eliminate moisture therefrom prior to introduction of the essentially moisture-free materials into a tank furnace for glass making. The preheating serves to raise the entry-level temperature of the glass batch material and improve furnace fuel efficiency. The preheating involves recirculating at least part of the pulverous glass batch material through the open-ended tubes of the tubular heat exchanger to heat the same and remove moisture therefrom prior to initiating delivery of the glass batch material in preheated condition to the glass melting furnace. The present method is specifically directed at maintaining continuous operation of the preheater upon interruption of material flow through the preheater tubes for any reason.

Abstract: A mold assembly and method for automatically making crown bottom blown glassware wherein a charge of molten glass is shaped into a hollow preform in a parison mold by means of a plunger. The hollow preform or parison is removed from the parison mold and placed in a finishing mold having a bottom forming assembly comprised of an annular member slidably contained in the bottom end of the finish mold and a domed central member slidably mounted in the annular member such that it can be reciprocated from a normally retracted position level with or slightly below the top surface of the annular member to a position above that surface.

Abstract: A protective coating composition is applied to the decorated and/or printed surface of a foamed plastic substrate to provide abrasion resistance, high gloss, and lubricity. Preferably, the composition is comprised of a water-based mixture of polyurethane resin and emulsified polyethylene resin, the latter being emulsified with an ionic or non-ionic emulsifier. The composition is especially useful for application over the exterior of foamed plastic surfaces which have been decorated and/or printed with printing inks prior to fabrication of the material into plastic articles.

Abstract: There is described a plug and air warp gauge which takes the form of an elongated vertically, reciprocated gauging head that is mechanically driven under the influence of a rotating cam. Coaxially within an annular head is positioned a plug which has a diameter such that it will pass through an unchoked neck of a bottle. The plug is attached to the lower end of a tube which is coaxially positioned within a larger tube. The larger tube is raised and lowered mechanically and when in its uppermost position, will support the plug-carrying tube. When the larger tube is lowered, the plug tube also is lowered. The lower end of the larger tube is in the form of an annular piston which will move downward within a cylinder that seats on the bottle finish. As the annular piston moves down, it will pressurize the inside of the bottle and the cylinder if the seal with the finish of the bottle is good.

Abstract: In the operation of a pressing plunger for forming a parison from a gob of molten glass, it is important that the plunger be moved into the gob which is retained in the parison mold, with a fairly rapid motion and also be capable of being withdrawn from the formed parison as rapidly as possible. One other consideration is that it not be pressing the glass at the final portion of its travel at a very high force. By providing a large piston for moving the plunger into and out of pressing position, it is possible to move the plunger at a relatively high velocity with high operating pressure. A small piston is provided within the larger piston and by reason of having a substantially smaller surface area, with the smaller piston being connected to the plunger, a lower force is applied to the plunger. The plunger with its piston is moved by the larger piston to the fullest extent of the large piston's travel, and the smaller piston to which the plunger is attached is free to move relative to the large piston.

Abstract: Glass surfaces are provided with abrasion-resistant and label receptive characteristics by forming a first layer of an oxide of tin or titanium thereon and then overcoating the first layer with a physical mixture of emulsified organic polymers including acrylic resin emulsion and polyethylene resin emulsion. The resins are present in the mixture in a solids ratio ranging from about 7:1 to 1:1.

Abstract: Labelled bottles are inspected by illuminating the labelled surface and generating brightness or intensity level signals for a plurality of points on the surface with a photo-sensitive diode array. Each intensity level signal is compared with a stored maximum intensity level and a stored minimum intensity level for the corresponding point. A difference signal is generated if the intensity level is greater than the maximum or less than the minimum intensity level. The difference signals are then weighted and summed to generate a figure of merit for the bottle being inspected. The figure of merit is compared with a predetermined value representing a "good" bottle in order to reject "bad" bottles. The maximum and minimum intensity levels can be generated by passing a plurality of known "good" bottles through the apparatus with labels distributed about the edges of the desired label area.

Abstract: An improved method is provided for forming surfaces for handling hot glass charges and newly-formed glass articles without detrimental marring or marking of the same. The method comprises priming a relatively-smooth metallic substrate with a silicone resin, applying a coating of a solventless curable thermosetting silicone resin binder over the primer, depositing at least one layer of a heat-resistant granular solid lubricant carbonaceous material over the binder coating and allowing the binder to wet and embed the granular material, and heat-curing the binder to permanently affix the granular carbonaceous material to the substrate to provide a lubricated durable wear-resistant surface for handling hot glass charges or gobs as well as newly-formed glass articles.

Abstract: This invention relates to an apparatus for effecting the uniform pre-heating of thermoplastic parisons of the type that are introduced into a blow molding machine for fabrication into a blow molded article. The invention provides a hopper which is intermittently supplied with batches of parisons and through which the parisons move by gravity. A convection heating zone is provided in the hopper to uniformly heat each parison passing therethrough, and a temperature equalization zone is provided adjacent to the heating zone. The parisons are removed from the temperature equalization zone by a continuously moving parison conveyor which forms part of the temperature equalization zone.

Abstract: Disclosed is a scanner system which includes a light source and a photodetector. Circuitry is included for automatically adjusting the intensity of the light source so as to prevent saturation of the photodetector. Whenever the current through the photodetector exceeds a predetermined amount, a transistor switch is opened to connect a resistor in series with the light source and cause the intensity of the light source to decrease. When the output of the photodetector reduces due to decreased intensity of the light source, the transistor switch will close and thus cause the resistor to be bypassed and the intensity of the light source to return to its original level.The scanner is utilized to detect reference marks which are located on a contrasting background. Additional circuitry included to adjust the sensitivity of the system so as to be able to detect marks of varying contrast with respect to the background.

Abstract: There is disclosed herein improved packages, and methods of forming same, of the type wherein a container, such as for example a glass container, like a bottle or jar, is provided externally thereof with a heat shrunk, cellular thermoplastic member, circumferentially and snugly engaging a sidewall portion of the container; the improvement resides in employing as the thermoplastic member a composite structure, or laminate, of a closed cellular polymeric layer in which the polymer is a polymer of predominantly olefin moieties and, in adhered relationship to the closed cellular layer, a non-cellular polymeric layer in which the polymer is a polymer of predominantly olefin moieties with the cellular layer being in snug, heat shrunk engagement with the sidewall portion of the container and the non-cellular layer being disposed outwardly of the cellular layer.