Abstract: A screen support in the form of a segmental collar for use in a screen stenciling operation. The collar segments are movable into engagement with at least the transverse marginal edges of a glass substrate for accurately locating the same relative to an overlying screen and for providing support for the screen, and especially the perforated pattern formed therein, to maintain the same in a flat, horizontal plane during the stenciling operation.

Abstract: A unitary, one-piece support element adapted to completely surround a glass substrate in a screen stenciling apparatus. The support element is in the form of a collar having an opening complementary to the shape of the substrate and offers support for the stencil screen during a stenciling operation to maintain the same in a flat condition throughout. Also embodied in the apparatus is a glass aligning arrangement to accurately locate the glass substrate in preparation for the stenciling operation.

Abstract: An applicator for applying liquid adhesive in a desired pattern and quantity to a paper form for the reception and securing of a stencil thereto. The applicator employs a liquid adhesive storage chamber and a spaced apart applicator chamber with an intermediate metering chamber. The applicator chamber is provided with a flexible plastic material having differential densities of porosity and an impermeable coating applied to selected areas thereof to control the deposition of a measured quantity of adhesive in a particular pattern to the paper form.

Abstract: A screen printing machine for a web intermittently pulled forwardly to receive a succession of closely interspaced prints, has a printing table over which the web is intermittently pulled beneath a printing screen which contacts the web, and during each web stop a printing material knife is reciprocated over the screen to force printing material through the screen onto the web to make a print. A just-printed print can be pulled forwardly under the screen which to accommocate the deceleration and acceleration of its knife, extends forwardly beyond its printing area, so it is possible that still-wet print can be smudged by the screen contact. To prevent this, the printing table is provided with a slot down through which the web can pass so it does not contact the screen beyond the latter's printing area.

Abstract: The present invention is directed to an apparatus for treating sheet material with liquid substances employing a squeegee for the application of ink or the like onto a sheet material by means of a screen. A side stop arrangement employing sealing plates for cooperating with the squeegee, laterally limits the amount of ink being applied to the material. The stop arrangement has at least one wall portion which is inclined with respect to the direction of motion of the screen and the sealing plate is adjusted so that the bottom surface of the plate is in a portion of an ink pool but spaced from a rotary printing screen so as to form a gap between the bottom surface of the sealing plate and the screen.

Abstract: Art is stencil cast using modeling paste directly onto a substrate door, a wall section, such as, a panel, a rigid or flexible vinyl sheet or similar materials, which acts both as a base for the mold and as the substrate for permanent retention of the cast-in-place art work.

Abstract: An apparatus for coating blanks, especially clothing inserts formed of textile material, comprising a device for the successive positioning of at least one blank, a coating device for the successive coating of at least one blank, and a heating device for the thermal treatment of the coated blank. There is further provided a conveyor device for transferring the blank from one device to the other. The conveyor device comprises a perforated plate forming a wall of a distributor chamber which can be connected with the suction side of a suction mechanism. The distributor chamber serves for the reception of at least one blank. The perforated plate has a density or proportion of perforations amounting to at least 10 percent of the surface area of the plate.

Abstract: An endless printing screen of generally annular configuration is supported in end bearings. A tubular carrier extends through the space surrounded by the screen and defines with the screen an annular clearance which is subdivided into two or more axially successive chambers. An arrangement of tubes admits printing medium through the carrier into the chambers so that it can pass through the screen to print onto a web beneath the screen. Devices are provided for reciprocating the endless screen and the carrier.

Abstract: A screen printing machine has one or more printing stations. Each station has an endless printing screen of generally annular configuration and is supported in end bearings. A carrier extends through the space surrounded by the screen and defines a clearance with the screen. An arrangement of tubes admits printing medium through the carrier into this clearance. The clearance is subdivided into discrete chambers so that, when different-color printing media are admitted into the different chambers the printing station is capable of printing a multi-color pattern.

Abstract: A "silk screen" is provided with a patterned pervious portion the dimension of which, in the direction of screen movement, is substantially less than the circumference of the cylindrical substrate. The screen is then moved beneath a squeegee through a distance which is greater than the indicated dimension of the pattern but less than the substrate circumference, the result being that a thick film of resistive material is metered onto the substrate without any overlapping or smearing. The squeegee, at the end of the screen-printing stroke, is located at an impervious portion of the screen, so that even unspindled small-diameter ceramic substrates are disengaged from the screen with no sticking or smearing. Such cylindrical substrates are solid in order to be economical, and to permit zero moisture intrusion. It is a feature of the invention that such economical solid substrates can be used, and are driven solely by screen friction so that loading, unloading and other problems are minimized.

Abstract: A web treatment element in the form of a roller is attracted to one side of a web by magnetic attraction from a magnetic element positioned on the opposite side of the web. The magnetic element includes a plurality of electromagnets and a switch connected thereto to reverse the polarity of at least a portion of the electromagnets to selectively alter the polarity alignment of the electromagnets.

Abstract: An arrangement on screen printing machines, particularly rotary screen printing machines, in which the dyestuff is taken from a dye pan and passed through the apertures in a screen and is applied onto the web of goods to be treated, which comprises a dye shutter disposed in the penetration zone for the dyestuff on the side of the screen remote from the weg of goods, to be closed when the machine is stopped.

Abstract: A dyestuff applicator, located inside a cylindrical printing screen, comprises a horizontal tube which supports an axially extending dyestuff-distributing member immediately overlying the inner screen surface. The distributing member, or at least a membrane-shaped bottom thereof, is under pressure of the liquid dyestuff supplied to the tube at a superatmospheric pressure equivalent to a head of at least 1000 mm water. To insure full effectiveness of this pressure over the length of an outlet zone in the bottom of the distributing member, the body of liquid overlying that zone within the applicator should have a cross-section exceeding in at least one dimension 1.5% of the length of a flow path as measured from a point of entry of the dyestuff into the space containing that body of liquid.

Abstract: A stencil printing, coating or coloring machine has a flexible hollow metal cylinder in contact with the stencil, and a perforate strip in the area of contact between the stencil and cylinder. The ends of the cylinder are sealed by deformable covers, and the interior of the cylinder is at least partially filled with printing, coating or coloring material.

Abstract: A dyestuff applicator, located inside a cylindrical printing screen, comprises a horizontal ink tube which supports an axially extending ink-distributing member with freedom of relative mobility in a vertical axial plane of the tube. The distributing member, resting on the inner screen surface, forms a discharge slot communicating with the interior of the tube through a multiplicity of conduits closely spaced along the tube axis, the conduits being disconnectable from the slot with the aid of an axially slidable or rotatable shutter common to all the conduits and lodged in the distributing member. This distributing member is weighted down by the pressure of the ink in an overlying space, or by springs or fluid cushions inserted between that member and the tube.

Abstract: A dyestuff applicator, overlying an area of a movable printing screen through which dyestuff is to be fed to a substrate, comprises a horizontal supply tube which supports an axially extending dyestuff-distributing member with freedom of relative movement in a vertical axial plane of the tube. The distributing member, resting under pressure on the screen, forms a discharge slot communicating with the interior of the tube through a multiplicity of conduits closely spaced along the tube axis, the conduits being disconnectable from the slot with the aid of a slidable or rotatable shutter lodged in the distributing member and controlled by an external actuator mounted on the supply tube.