Abstract: The present invention provides a method and apparatus for the manufacture of generally rectangular plastic bags from a gusseted or flattened tubular, supply stock where the bags terminate in heat sealed closure at the bottom and the end opposite the bottom is generally open.

Abstract: A collimated hole structure formed by constricting a plurality of tubular elements each provided with a core for supporting the tubular element during the constricting operation. The bundle of elements is constricted to a point where the elements effectively fuse into a substantially monolithic body. The cores are then removed, leaving a plurality of extremely small diameter, generally parallel passages in a solid body. The tubular elements may be arranged in any desired array, and thus the passages may be provided similarly in any desired array. The passages may have high aspect ratios and may be closely juxtaposed. In one illustrative application, the collimated hole structure is provided with dielectric film and utilized as an anode portion of an electrolytic capacitor. In another illustrative application, the collimated hole structure is utilized as a tip for a drilling device.

Abstract: A device for the ultrasonic welding of a tubular fitting having an annular flange in an opening of a thin-wall synthetic-resin foil container has an anvil supporting the fitting against the ultrasonic welding head. The anvil includes an upper anvil member and a lower anvil member. The upper anvil member has an upper surface confronting the head and formed in axial alignment with the head with a protuberance holding the foil away from this surface. The surface is provided with an annular groove receiving a first rubber ring registering with the head and supporting the flange of the fitting, the first rubber ring having an elasticity greater than that of the foil of said container. The lower member has a surface juxtaposed with said upper member and provided with an annular recess receiving a second rubber ring. The second rubber ring projects above the surface of said lower member.

Abstract: Apparatus and method for heat sealing a moving tubular liner or the like wherein the area of the liner to be sealed is repeatedly contacted by an opposing pair of elongated sealing elements mounted for movement in orbital paths relative to each other and to the liner passing therebetween.

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

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: Pipe coating apparatus which incorporates means for rotating and advancing a pipe along a specified path and an applicator means for placing cementicious materials thereon. The slurry is applied by a mechanism having a top opening which receives cement therein, the opening directing cement to a reinforcing ply which is applied to the pipe. The reinforcing material is delivered through the applicator mechanism. The cement falls on the reinforcing material which normally has a mesh construction. The pipe is advanced and rotated simultaneously. The helical movement of the pipe draws the reinforcing mesh into a gap at the lower side of the pipe above a free rotating parallel roller. A ply of weatherproofing material such as plastic film is placed on the pipe.

Abstract: The invention relates to a machine for and method of handling sheet material for forming, for example, bib aprons in a simple and economical way. Sheets of material are automatically directed along a feed path to a folding station at which a string or strip is formed into a "V" shape in spaced juxtaposition above the sheet material. Opposed corners of the sheet material are folded over legs of the "V" and the apex of the "V" is thereafter severed to form neck tie elements.

Abstract: The invention is an improved liquid photopolymer applicator means for use on photorelief printing platemaking machines. The applicator means comprises a substantially vertical plate which acts as both the rear wall of the applicator means and as a doctor blade for uniformly spreading the photopolymer. The remaining sides of the applicator means form a scoop means which is substantially movably connected to the vertical plate to define a bottom slot-like opening immediately in front of the vertical plate to discharge the photopolymer at a controlled rate, said photopolymer being doctored by the vertical plate as the entire assembly traverses the length of the platemaking machine. The entire assembly is a part of a movable carriage which traverses the length of the platemaking machine, said carriage being movably mounted to said platemaking machine upon a shim which determines the thickness of the photopolymer plate desired, and said carriage driven by an adjustable gear means.

Abstract: A novel self-adhesive type multi-layer laminated bituminous roofing membrane suitable for the formation of the roofing or waterproofing layer on roofs, floors and the like is provided. It comprises a base sheet of a sheet-like material, one or more bitumen layers coated on all or part of one or both faces of the base sheet, at least one layer of compound bitumen including both bitumen and rubber and/or resin laminated on all or part of the surface of said bitumen-coated layer on the base sheet and at least one release sheet laid over the whole surface of said compound bitumen layer.This roofing membrane is produced by uniting the bitumen-coated base sheet and the compound bitumen-coated release sheet, and can be applied over a substrate in a simple manner, without the step of melting or liquefying bitumen as in the conventional application process.

Abstract: A method for producing a panel for a back-lighted display sign comprises the steps of impressing recesses about one surface of a planar sheet of rigid foam to reduce the sheet thickness in a pattern corresponding to a desired pattern of recesses. Apertures are also formed through the sheet at locations each bounded by an identical corresponding portion of each recess. The sheet of foam is then sandwiched between outer cover layers to complete the basic panel structure for a display sign having multiple recesses containing discs which are moved between bi-stable positions covering the apertues or clear of the apertures.

Abstract: A labeling machine of the kind wherein labels are removed one at a time from a stack of labels by a rotating picker provided with axially spaced annular picking surfaces disposed for rotation about an axis parallel to the endmost label in the stack at a distance therefrom such that the annular picking surfaces of the picker are tangent to the plane of the endmost label. The annular picking surfaces contain diametrically disposed slots which are connected to a vacuum as they are moved into engagement with the endmost label and thereafter at a predetermined place in the further rotation of the picker are disconnected to release the label characterized in that there is a needle fixed in each slot with its pointed end flush with the annular picking surface of the picker and with which the portion of the label crossing the slot is held engaged during the period the picker is taking hold of the label and releasing it.

Abstract: A length of face sealing valve stock is formed into individual face sealing valves and applied to end closures of pressurized dispensers. The stock advances in steps by a feed dog in vent slots in the tape. The tape is held against advancement by an index dog at all other times. Lost motion in the feed dog drive accommodates the drive to tape arrest and permits shutdown and startup at a known, predetermined position in a cycle. A head carries a punch and shear blade which form vent slots and cut the tape to valve length during the time that the tape is stopped. Tape is sheared to valve length at an index wheel which holds the tape by vacuum during shear and successive 90.degree. transports for solvent activation of adhesive and transfer from the wheel by bonding the activated adhesive to an end closure. A proximator forces an end closure into contact with a valve during transfer.

Abstract: An apparatus for the periodic transverse welding and severing of longitudinally advanced superposed wrapper sheets has two oppositely rotating, cooperating welding shoes, at least one of which is provided with a heater and at least one of which is displaced towards its rotary axis by virtue of the engagement between the welding shoes during each revolution thereof. One welding shoe has a tapered terminal head which includes leading and trailing flanks as well as a cutting edge. The other welding shoe has a counterface cooperating with the cutting edge and two elastic, rod-like members arranged adjacent and parallel to the counterface. As the welding shoes simultaneously engage the superposed wrapper sheets from opposite sides, the leading flank of the tapered head, cooperating with one of the elastic rod-like members pinches the wrapper sheets and provides a first transverse weld seam.

Abstract: Apparatus for laminating film strips to a transport web, the laminating apparatus adaptable to handle film strips of different sizes having different perforation formats. The laminating apparatus comprises a module for positioning a film strip of a particular film size with respect to the transport web. The film strip and the transport web are then advanced through a laminating station where they are laminated together with a tape. The laminating apparatus is designed to interchangeably receive the positioning module. Thus, film strips of different film sizes may be laminated using the disclosed laminating apparatus by interchanging the positioning module to suit the particular film size to be laminated.

Abstract: In assembling at least one metal frame in abutting supporting relation to a diaphragm to form a diaphragm assembly for an electro-acoustic transducer, for example, as in a microphone or headphone, the diaphragm, which may be an electret, is formed at least in part of a thermoplastic resin so as to provide the latter at each surface of the diaphragm which, in the abutting supporting relation, is engaged by a surface of a metal frame, and the frame or frames and the diaphragm are pressed together in the desired abutting supporting relation while each metal frame is heated so that heat is transmitted through the latter to melt the thermoplastic resin at the engaged surfaces of the diaphragm and frame or frames, whereupon the heating of the frame or frames is halted so that the thermoplastic resin hardens to bond together the diaphragm and frame or frames in the desired abutting supporting relation.

Abstract: A microfiche having one or more frames to be deleted is mounted in accurate registration and alignment on a microfiche deck, and a light is energized in the deck underneath each frame of the microfiche to be deleted. The operator then moves a knife carriage mounted on an "X-Y" detented slide system and having a solenoid-operated knife blade, on top of the microfiche, to the proper position with respect to each frame to be deleted, and then energizes the solenoid to cut that frame from an adjacent frame on the same filmstrip. After each edge of the frame is cut, the operator uses a spatula to pry up an end of the frame which is then grasped and stripped off of the microfiche. After all of the unwanted frames are deleted, the microfiche is removed from the deck.

Abstract: The heat bonding of plastic sheets includes the steps:A. transmitting high frequency electrical energy in one direction through a firstportion of said sheets of sufficient area as to preclude heat bonding of the sheets at said first portion thereof, andB. transmitting said energy back through a second portion of the sheets and of sufficiently reduced area as to effect heating bonding of the sheets at said second portion.