Abstract: A system for coating work pieces with particulate material is disclosed. A predetermined quantity of the particulate coating material is encapsulated per unit length of a polyethylene tape. The encapsulating tape is then moved at a controlled rate past a stripping station where the particulate material is stripped from the encapsulated tape and entrained in a gaseous stream. The gaseous stream injects the particulate material into a chamber having an open inlet in which the particulate material is both heated and accelerated to a high velocity for impacting a work piece and thus form a coating. In one embodiment of the invention, the particulate material is encapsulated in a plurality of discrete pockets, each containing a measured quantity of the particulate material. The particulate material is stripped from the package by pneumatic pressure and injected in the combustion chamber in timed sequence with ignition of a charge of combustible gases.

Abstract: Apparatus and process for applying locking patches of resilient, heat softenable resin to internally threaded articles having openings at both ends, in which the threaded portions of the articles, heated to a temperature above the softening point of the resin to be applied, are moved on a conveyor as a uniform succession at a uniform continuous speed in a path for application of particles of the resin with the openings at the ends of the articles substantially uncovered, a stream of resin particles entrained in a gaseous jet is directed by a resin particle stream guide through the openings in successive moving articles against threaded areas of the articles where the particles adhere and melt to form locking patches, flow of the gaseous jet is controlled relative to movement of a repeating feature of the articles on the conveyor to supply the stream of resin particles when the stream guide is in, and to interrupt the stream of particles when it is out of particle applying relation to the articles, and a sucti

Abstract: A layer of plastics material is applied to at least one selected surface of a metal article by a method in which the article is heated and positioned in such a way that the selected surface or surfaces is or are lowermost; a table having an upper surface or surfaces carrying a layer of powdered plastics material, said carrier surface or surfaces of the table being of a shape and area such that the surface or surfaces will wholly underlie the selected surface or surfaces of the article, is raised upwardly beneath the article to urge said carrier surface or surfaces against the overlying selected surface or surfaces and so transfer powder from the carrier surface or surfaces to the selected surface or surfaces; and the powdered material adhering to the selected surface or surfaces is permitted or caused to coalesce and form a plastics layer on the or each surface.

Abstract: A fabric marking device for producing a powder mark of predetermined shape and size on pieces of fabric. The device comprises a table with a perforated work surface area and means for delivering powder under air pressure to one or more tubes having a lengthwise slit therein which is placed against a surface of fabric to be marked. Means are provided for altering the angle of the tubes relative to each other, and/or to the fabric to be marked, and for varying the distance between the tubes and work surface to accommodate marking a stack of fabric layers simultaneously.

Abstract: A powder feeder pick-up tube having a central powder delivery tube receiving powder entrained in a propellant gas, an outer concentric tube delivering propellant gas to the powder delivery tube and evenly entraining powder in the gas as the powder enters the powder delivery tube. The propellant delivery tube has an inwardly curving end that forms a gap with the open end of the powder delivery tube, and the geometry of the curving end and the size of the gap are factors determining the operational characteristics of the pick-up tube. Variations on the basic pick-up tube include a concentric fluidizing tube surrounding the propellent delivery tube and locally fluidizing powder around the opening of the powder pick-up tube. The shape of the fluidizing orifice at the outlet of the fluidizing tube may be modified to alter its fluidizing characteristics. The tube is immersed in a hopper of powder when operating and the entire hopper may be fluidized and vibrated to assist the operation of the pick-up tube.

Abstract: A workpiece such as an electronic component, comprising a body and leads that project in one direction from the body, has its body coated by immersing it in a fluidized bed while the workpiece is vibrated. Immersion depth is such that the uppermost surface of the body is at or just slightly below the top surface of the fluidized bed. Vibration of the workpiece during immersion ensures a uniform thickness coating all over the body and prevents "pants legs" on the leads.

Abstract: An apparatus which is used for paint application to a road surface comprises a paint supply means provided with a valve means rotatably fitted in a bore-like space which is formed longitudinally in the body of the supply means, a plurality of orifices in two rows in an opposite relation on a lower portion of said paint supply means for paint discharging, a pair of rollers each provided on the external periphery thereof and in the axial direction of the roller with a vast plurality of projecting teeth and grooves formed side by side with the projecting teeth, said rollers being attached to said paint supply means to rotate inwardly and disposed adjacent said orifices, and a pair of cover members each adapted to cover one of the rollers. With the arrangement mentioned above, the paint having a high viscosity can be discharged sufficiently and effectively to draw or produce lines which have a fixed width and thickness of paint on the road surface without regard to the rise and fall of the road surface.

Abstract: A method for powder coating of articles with an organic polymeric material. Articles to be coated, preferably glass containers, are transported by a first conveying mechanism through a pre-heat oven wherein their temperature is raised to a level above ambient temperature. The preheated containers are then transferred to chucks of a second conveying mechanism which carry the containers through a powder spray apparatus wherein the organic polymeric material is applied to the container. The chucks of the second conveying mechanism are cool and any oversprayed material will not adhere thereto. After spraying, the containers are again heated to cure the sprayed-on powder coating to form a filmlike layer on the container. The containers are then cooled below the softening point of the organic polymeric material and released from the second conveying mechanism for further handling.

Abstract: A copying machine arrangement having an apparatus for applying and fixing a magnetizable powder on a coated and electrostatically charged paper sheet to fix the image thereon. The apparatus includes conveying means for carrying the charged paper to a surface element positioned below a powder dispensing structure wherein a magnetic roller will transfer the carbon powder to the sheet surface and pressing rollers are provided for setting the powder on the paper sheet.

Abstract: The invention relates to a method for the electrostatic covering with a powder layer of successive envelope for lamps. The powder each time to be provided is mixed with a transport gas and supplied to a first envelope to be covered via a duct. In order to terminate the covering operation, the supply of the powder to the transport gas is interrupted while the flow of the transport gas is maintained for cleaning the duct by blowing.

Abstract: Apparatus for applying an elastic band around the cuff of an elastic glove which includes extruding a stripe of elastomeric material around the cuff of the glove while on a glove form and curing the stripe. A tray carrying a row of glove forms, each having a glove thereon, is stopped to position one of the forms at a band applying station. A mast having an extruder nozzle adjacent the cuff edge is moved circumferentially about the cuff in a generally elliptical path to avoid engagement with adjacent forms while allowing the forms to be closely spaced for economical manufacturing.

Abstract: A process for producing a cotton batt by forming a thin web of cotton fibers and then contacting the web with particles of a copolymer of vinyl chloride and vinylidene chloride; subsequently forming the web into a batt and then heating the batt.

Abstract: A preheated workpiece having a surface with substantially arcuate curvature is supported by rotatable supporting means which has limited contact with said surface. Heat fusible plastic material in finely divided solid form is propelled against all parts of the surface of the workpiece, to be melted by its heat and fuse into an overall coating. During such coating, and thereafter until the material solidifies to substantial hardness, the supporting means is rotated, imparting rotation to the workpiece by its rolling contact therewith, and is cooled to maintain its temperature below the melting point of the material.

Abstract: Manufacturing a curved fiber reinforced body of plastic material by cutting plastic impregnated fibers with a cutter, directing the cut fibers onto a rotating form and applying a plastic material to the fibers. The fibers are deposited in predetermined radial and circumferential directions to build up a preform of overlapping layers of oriented fibers as the form is rotated. The preform is shaped by compression between mating shaping forms to substantially the final molded shape. The plastic material contains a curative and is partially cured under controlled conditions after the preform is built. The preform is then preheated in an oven and molded under predetermined pressures and temperatures.

Abstract: A coating system employs a fluidized bed unit in which the porous plate is inclined to promote flow of the coating powder from the feed point to a subjacent location. Means is provided to sense the level of the coating powder at the subjacent location of the plate, and to control its discharge into the unit in response thereto. The incline of the plate minimizes the lag between the feed and sensing operations, thereby affording accurate correlation between the amount of powder introduced and the actual need.

Abstract: Powder to be used for coating articles electrostatically is maintained in a fluidized condition in the supply container and in conveyor ducts all the way to a discharge over the inner wall of an annular channel onto the rotating disk of an electrostatic coating machine.

Abstract: A process for controlling the amount of polymer applied to a lace in which a powdered heat is applied to melt the polymer and the composite is passed through a die to consolidate the product and remove excess polymer, the control being effected by detecting the amount of excess molten polymer and automatically adjusting the polymer input. The process is also suitable for controlling the amount of polymer applied in a process for coating a lace.

Abstract: A system is disclosed for supplying particle material along a length of strip material which is then closed into a tube to provide welding wire or electrode. The strip material is moved longitudinally (while its flow rate is measured) and as it moves through a junction location, particle material is metered onto the strip, the flow rate of the particle material also being measured. The system compares the flow rates of the strip material and the particle material with a predetermined ratio to provide a control signal which controls the flow rate of the particle material accordingly. The strip material carrying the particle material is then closed to a tubular configuration to produce welding wire of improved consistency along its length. As disclosed, the system incorporates effective structures for measuring the flow of the strip material and for precisely metering the particle material.