Abstract: This invention provides a high output machine for effecting the production of organic thermoplastic articles by the compression molding technique. A plurality of molding members having open top molding cavities are movable around a horizontal closed loop path. A plurality of horizontally moving plungers are provided which are respectively co-operable with the molding members in a portion of their path to close the open top of the molding cavities. Successive gobs of heated organic thermoplastic material are deposited in the open top molding cavities at a point prior to the molding members moving into vertical alignment with the plungers. A relative vertical displacement between the plunger and the molding members is then effected to bring each plunger into engagement with the respective molding member and effect the compression molding of the inserted gob to conform to the molding cavity.

Abstract: The invention provides method and apparatus for supporting hot glass tubing drawn from a source of molten glass, on a cushion of air. A horizontally elongated chamber is disposed beneath the drawpath of the tubing and an elevated air pressure is maintained in the chamber. The top wall of the chamber defines a V notch in vertical cross section within which the tubing is disposed and one or more openings or slots traversing the vertex portion of the top wall provide an upward flow of air from the chamber to support the tubing being drawn. The dimensions of the openings are selected as a function of the range of diameter and weight of the glass tubing to be supported and the air pressure is selected as a function of the same variables. Air flow cooling of the top portions of the tubing may be provided to reduce bow.

Abstract: Olive-green colored reduced glass compositions are disclosed in which the glass is a soda-lime-silicate glass having Fe.sub.2 O.sub.3, S.sup.-2 and Cr.sub.2 O.sub.3 present in the following approximate ranges in % by weight:______________________________________ Fe.sub.2 O.sub.3 0.1-0.4 S.sup.-2 0.01-0.04 Cr.sub.2 O.sub.3 0.02-0.2 ______________________________________The glass is especially adapted for making beer bottles that are pleasing to the eye and are light protective without the use of cobalt.

Abstract: This invention provides a pre-tightening mechanism for effecting the initial application of a threaded closure on a threaded bottle neck. The pre-tightening mechanism includes a friction rail for effecting a turning movement of the closure relative to the bottle neck and a spring biased cap hold-down plate which maintains a substantially constant pressure on the closure and maintains the closure panel horizontal during the pre-tightening operation.

Abstract: A method for forming multi-directionally oriented plastic articles by shearing a thermoplastic material in a non-linear shear pattern while the material is at a temperature conducive to orientation and further processing the material by known plastic forming techniques to form an article in which the material remains oriented. More specifically, thermoplastic material is plasticized and accumulated in an amount at least sufficient to form the article, and the material is expressed under pressure from the accumulated body to and through an orifice. The material is non-linearly sheared prior to its issuance from the orifice to induce orientation stresses into the material, and, during shearing, the material is at a temperature which is conducive to orientation.

Abstract: A container for storing various medical supplies such as bandages and gauze pads is provided which includes improved means for orienting the closure relative to the main body and locking the closure in place. The container includes a closure and a main body portion joined by a live hinge such that the closure engages the main body in a flush-like manner. The closure includes an improved rib and lug assembly which engages a complementarily-shaped slot in the main body front wall thereby orienting the closure relative to the main body and locking the closure in the closed position.

Abstract: A fabricated cup or other container in which the sidewall is formed from a rectangular sheet-like blank of an oriented thermoplastic material, the blank having its ends joined to one another to form a cylindrical sleeve with a liquid-tight seam, the blank having a relatively high degree of orientation extending circumferentially of the sleeve, the fabrication of the sidewall from the sleeve being accomplished by telescoping the sleeve over a substantially cylindrical mandrel, by exposing the sleeve to heat to cause it to shrink into conformity with the external configuration of the mandrel and by completing the cup by pressing the bottom and forming a beaded rim.

Abstract: There is disclosed a fugitive vehicle system comprising at least two organic components, at least one component being a solid polymeric material capable of pyrolyzing in a non-oxygen containing environment and at least one other component being a solvent for the solid polymeric material, the solvent being capable of removal at a temperature below the pyrolyzing temperature of the polymeric material. This fugitive vehicle system is especially suitable in microelectronic applications.

Abstract: This invention provides substitute capping heads to apply a threaded closure on a bottle neck through the utilization of existing machines which were designed to apply an aluminum closure on a bottle neck by in situ formation of the threads in an aluminum shell. The modified capping heads embodying this invention utilize the same rotational and vertical movements of the capping heads relative to the containers, but effect a frictional engagement with a pre-formed, internally threaded plastic closure to effect the screwing of such closure onto a bottle neck with the effective application torque being limited by a slip clutch incorporated in the drive train of the modified capping head. Such clutch is isolated from ambient humidity conditions, and in some modifications operates in an oil bath.

Abstract: A mechanism for dispensing container closures, one at a time, from a stacked array. A hand operated slide bar is positioned at the bottom of the closure stack. An upturned edge or finger is attached to the slide bar, thus enabling it to engage with the inside rim area of the closure and pull the closure from the stack. The finger on the slide bar is beveled so that it will slide beneath the container rim when the slide is returned to its inward position.

Abstract: The invention provides an improved method and apparatus for effecting the severing of successive gobs from a continuously extruded rod-like formation of organic thermoplastic material, followed by the successive transfer of the gobs to successive molding units which are continuously movable relative to the free-fall path of the gobs. Severing means are provided which are operative upon a vertically extruded rod-like formation of hot organic thermoplastic material. A plurality of molding members, each having an open top molding cavity, are moved in timed relationship to the gob severing means along a horizontal path adjacent to the free fall path of the severed gobs. Each gob is caught by a transfer device which is movable under the free-fall path of the gobs in timed relationship to the gob severing and the movement of the molding members.

Abstract: A plastic container comprising a side wall having an oriented generally cylindrical lower portion, and a bottom joined to said side wall and closing the lower end of the container. The bottom includes a generally elliptical bottom wall and a plurality of oriented circumferentially spaced outwardly convexed legs extending from the elliptical wall. The elliptical wall has a first portion extending downwardly from the lower cylindrical side wall portion and having a radius less than the diameter of the container. Each leg has a first convex portion extending downwardly from the cylindrical portion of the side wall and having a radius greater than the diameter of the cylindrical portion. Each leg has diverging side wall portions merging radially inwardly with the elliptical wall portion of the bottom wall.

Abstract: There is provided a plural part receptacle assemblage for the storage and handling of bulk quantities of material which assemblage includes a tight-head plastic drum molded as a single article to which is concentrically attached, subsequent to the formation of the drum, handling means so arranged and constructed as to be grippable about substantially the full 360.degree. circumference of the drum with steel drum chime-handling devices for transportation of the assemblage and the bulk quantities of material stored in the drum; preferably the drum or handling means, or both, include means for preventing liquid accumulation between the handling means and drum.

Abstract: This invention provides an improved reshipper carton which is capable of providing adequate shipping protection for either finished color TV bulbs, which have a large rectangular face plate end tapering down to an integral neck tubulation, or for unfinished TV bulbs or funnels, which have a large rectangular end and an integral neck tubulation but do not have a face plate secured thereto. The invention contemplates dividing the volume of a rectangular space defined by vertical corrugated walls of a container into two generally triangular compartments through the insertion of a vertical partition in diagonal relationship across the corners of the container. Such partition is provided with scores that permits two flaps to be horizontally displaced outwardly from opposite sides of the partition into respective engagement with the adjacent side walls of the compartment.

Abstract: This invention provides an improved solar collector of the type employing two concentrically disposed glass tubes having their axial end portions sealingly united to form a double-walled structure, with the annular space between the inner and outer glass tubes being highly evacuated. A heat transfer fluid flows thru the inner tube. The outer surface of the innermost tube is provided with a coating of a solar energy absorbent material to trap energy incident upon the outer tube within the inner tube and the heat transfer fluid. At least one axial section of the inner glass tube is radially inwardly deformed to define a unique bellows configuration to permit absorption of differential thermal expansion of the inner and outer tubes. Improved means for connecting such double-walled tubes in end to end relationship to define a conduit for the heat transfer fluid are also disclosed.

Abstract: Method and apparatus for blow molding plastic articles from preformed parisons by reheating the parisons and then stretching and blowing them. The parisons are conveyed in series to a plurality of fixed heating stations at which the parisons are fixedly positioned for heating, the parisons being rotated for uniform heating. The heating is enhanced by blowing air under pressure through a tunnel enclosing the successive heating stations. Finally, the parison is stretched and blown at a blow station in a blow mold of unique design.

Abstract: Halftone printing of a plurality of different colors is employed to produce a composite graphic display on the surface of the glass. Precise alignment is utilized in order to register the halftone printing screens for each color that is deposited on the glass surface. The opaque enamels employed in the decorative process are carefully balanced with respect to each other to obtain the desired color hues. The deposition angles for the alignment of the halftone dots is controlled to minimize the undesirable moire effect.

Abstract: A control system for a plastic extruder which automatically controls both the melt pressure and the melt temperature of the plastic material at the outlet of the extruder barrel. The extruder barrel is divided into a plurality of heating zones and a zone temperature control means individually controls the temperature of each zone in accordance with predetermined zone temperature set points. A melt temperature control means automatically adjusts certain zone temperature set points such that the actual melt temperature is maintained at its desired value. The speed of a rotatable extruder screw is controlled by a melt pressure control means such that the actual melt pressure is maintained at its desired value. In accordance with the present invention, a separate feedforward controller and separate feedback controller are provided in the melt temperature control loop and in each zone temperature control loop such that independent specification of set point and disturbance responses can be achieved.

Abstract: The invention provides a simple, yet highly accurate device for synchronizing the speeds of two power-driven machines having separate, variable speed power-drives. A pair of shafts are respectively connected to the two machines and mounted in opposed concentric relationship for rotation in opposite directions at rates respectively proportional to the speed of rotation of the two machines. A differential unit is connected between the two shafts, such unit having equal size input and output sun gears respectively connected to the shafts. The planetary output of the differential unit is connected to a speed control element for at least one of the motors respectively driving the machines to vary the speed of such machine to bring it into rotational synchronization with the other machine.

Abstract: Organic hygroscopic powders are preconditioned to render them free flowing and to facilitate their electrostatic application to preheated workpieces. The preconditioning technique includes drying the powder prior to electrostatic application to remove moisture and break up agglomerates using a fluidized bed drying process with concurrent mechanical agitation to form a substantially dry, free flowing powder.