Abstract: A reactive polyurethane mixture is applied by a high pressure airless spray applicator directly onto the primary backing of a moving substrate such as a carpet web. The applied reactive mixture is allowed to foam to an approximate predetermined thickness and density. While the blown or foamed backing layer still possesses substantial residual tackiness, it is compressed or regauged to a precise uniform thickness and simultaneously is provided with either an embossed or a smooth surface. The tack of internal cell walls of the blown backing layer retains the layer at the regauged thickness. Curing of the regauged backing layer by externally applied heat and/or by the heat of the exothermic reaction in the applied mixture is completed. Detackifying agents are applied to the regauging devices and/or to the applied backing layer to prevent adherence of the layer to the regauging devices. A surface skin formed of the detackifying agents is cured on the regauged backing layer.

Abstract: A moving thermoplastic sheet having a thickness not smaller than 150.mu. is coated with a liquid coating agent in excess amount and then a metering bar rotating at about the same peripheral speed as the moving speed of the said sheet is contacted with the coated surface of the sheet whereby a coated thermoplastic sheet having a uniform coating layer is obtained.

Abstract: A holder for rotatably mounting the metering rod in a rod-type web coating apparatus, such as used to coat paper, is made of a rigid but yieldably deformable material, such as a plastic. The holder includes a plurality of longitudinally extending conduits for carrying water to lubricate the rotating rod and removing coating particles which are carried by the rod from the web surface and into the rod cavity. The holder has a surface opposite the rod cavity for receiving a uniformly applied load along the longitudinal length of the rod holder for aligning the rod surface and/or applying a uniform nipping load between the rod and surface of the web being coated. A second surface also extends longitudinally for the length of the holder along a lip portion which protrudes from one side of the cylindrical rod cavity.

Abstract: Apparatus for applying bronze powder to adhesive-coated portions of one side of a running web of cigarette paper has a magazine for a supply of bronze powder and a feed screw which draws powder from the magazine and delivers some of the withdrawn powder into a chamber for a transfer wheel whose peripheral surface applies powder to the one side of the web. The powder which fails to adhere to the web is returned into the helical groove of the feed screw upstream of the chamber. A cylindrical sleeve which surrounds the feed screw has an outlet located downstream of the chamber and serving to return into the magazine such powder which is transported beyond the chamber. The sleeve has a longitudinally extending slot for a brush whose bristles extend into the helical groove of the feed screw to prevent agglomeration of powder in the groove.

Abstract: Disclosed is an improved lithographic plate processing apparatus which comprises means for moving an exposed lithographic plate through the apparatus on an uphill slope, developer means within the apparatus for applying a developer liquid to the plate as it moves through the apparatus, and gumming means within the apparatus for applying gum to the plate after it has been developed, the improvement comprising, as part of the developer means, second spray means for spraying fresh developer liquid on the plate at a position between two rotating scrub brushes, which in combination with the other elements of the developer means simultaneously provides washing of the dirty developer liquid from the plate and fresh developer on the plate as it is scrubbed by the second scrub brush.

Abstract: An improved process for coating sheet substrates with thermoplastic polymer is disclosed. In the process the sheet substrate forms one die lip of the extrusion coating die. The sheet substrate is passed from face-to-face contact with the metal block of the extrusion coating die into a spaced apart relationship with one die lip of the extrusion coating die, the sheet substrate forming the second die lip. Molten thermoplastic polymer is extruded into the space between the one die lip and the sheet substrate, thereby coating the sheet substrate with polymer. The preferred polymer is a poly-.alpha.-olefin, especially polyethylene or a copolymer of ethylene and butene-1. The preferred sheet substrate has orifices in the surfaces thereof. The process may be used to coat sheet substrates with a thermoplastic polymer, e.g. in the manufacture of form boards for the construction industry.

Abstract: A process of producing a liquid image, wherein an insulating material bearing an electrostatic charge pattern detectable at its surface is developed by wetting with a developing liquid according to such charge pattern and wherein in said process developing liquid is brought substantially uniformly in close proximity to or in contact with said material by the use of at least one developing liquid applicator means followed by at least one other means that is capable of removing from the charge-carrying member some of the developing liquid already deposited by the or a said preceding applicator means.

Abstract: A method and apparatus for decorating embossed panels by removing liquid colorant from portions of the surface. The apparatus includes at least one driven support roll underlying the panels for moving the panels along a work path and at least one wiping roll supported on an axis above the work path having a cylindrical resilient wiping surface driven at a speed for wipingly engaging an upper surface of the panels passing under the wiping roll on the work path. The wiping roll is supported and biased for movement toward and away from the work path to provide selectively adjustable wiping pressure against the surface of the moving panels and a doctor blade angularly engages the wiping surface of the wiping roll along a line spaced away from the area of wiping contact between the panels and the wiping roll for removing liquid colorant from the wiping surface of the roll.

Abstract: An electrophotographic copying apparatus including a wet developing unit of the one-side face developing type which is equipped with a developing unit having an improved excessive developing solution removing device associated with a transfer paper drying device. The excessive developing solution removing device includes a pair of spaced excessive developing solution removing members contacting the latent image bearing surface of the transfer paper fed from the developing unit, and a rotary member rotatably disposed in the vicinity of the removing members and out of contact with the latter for efficient removal of the excessive developing solution from the transfer paper without soiling the paper.

Abstract: Apparatus for the construction of cathodes from pasty materials and expended metal substrates. A continuous roll of conductive metallic mesh is fed past a coating device and coated on one side. Simultaneously the coated metallic mesh is supported by an absorbent felt belt which is pressed against the mesh and removes excess liquids. After being coated on one side the mesh is turned over and further coated in a similar manner.

Abstract: Apparatus for controlling the depth of material laid on a web and comprising a head for laying the material, an arrangement for continuously moving the web past the head, first and second members defining an extrusion gap for receiving the web, and a control device arranged to effect movement of one member relative to the other to vary the size of the gap, the control device comprising a fluid-pressure operated piston and cylinder unit including a plurality of relatively movable cylinders and pistons individually extensible and retractable to vary the length of the unit, and a switching arrangement for individually operating the cylinders.

Abstract: An improved apparatus is disclosed for developing images on an electrophotographic copy sheet, characterized by the provision of a distribution roller having a soft porous peripheral surface for evenly spreading the toner dispersion on the electrophotographic copy sheet. The distribution roller is arranged between pairs of in-feed and squeeze roller means arranged in the developing chamber for transporting the electrophotographic sheet therethrough. Improved spray tube means are also provided for spraying the toner dispersion uniformly upon the peripheral surface of the upper in-feed roller.

Abstract: A free standing strip oiler and feeder adapted to oil both sides of a metal strip and feed it to a press comprising coacting powered feed rolls which receive and feed a strip to a straightening roller followed by means for coating the upper surface of the strip with lubricant, a pair of coacting squeegee rolls for smoothing the lubricant on the upper surface of the strip, means for coating the underside of the strip with lubricant and a further roll for finally smoothing the oil on the upper surface of the strip. The oiler and feeder unit is provided with a system for returning excess oil to an oil reservoir which is heated to maintain the oil at the proper and desired flow standards.

Abstract: Apparatus for carbonizing a tissue paper web has an improved inking section which permits tissue to be coated, with or without uncoated striped areas, at speeds up to about 3,000 feet per minute. A first doctor blade positioned upstream of a second doctor blade and an equalizer rod contacts the paper very lightly so as to remove some of the excess thickness of ink on the paper, thus reducing the amount of ink to be removed by the second doctor blade and the equalizer rod. The equalizer rod is made of hardened wire of a very small diameter, preferably about 0.047 inches, and is supported under tension in a shallow v-groove by a pair of chucks which are rotated together.

Abstract: An improved process for coating sheet substrates with thermoplastic polymer is disclosed. In the process the sheet substrate forms one die lip of the extrusion coating die. The sheet substrate is passed from face-to-face contact with the metal block of the extrusion coating die into a spaced apart relationship with one die lip of the extrusion coating die, the sheet substrate forming the second die lip. Molten thermoplastic polymer is extruded into the space between the one die lip and the sheet substrate, thereby coating the sheet substrate with polymer. The preferred polymer is a poly-.alpha.-olefin, especially polyethylene or a copolymer of ethylene and butene-1. The preferred sheet substrate has orifices in the surfaces thereof. The process may be used to coat sheet substrates with a thermoplastic polymer, e.g. in the manufacture of form boards for the construction industry.