Abstract: An apertured rectangular foil of substantially inextensible sheet metal, e.g. nickel or steel, has a hole at each corner engaged by a resiliently biased gripper exerting on it a diagonally outward force to hold the foil stretched in a surrounding tenter frame supporting these grippers. The frame is provided with marginal ledges, underlying the foil at least along the major sides of the rectangle, onto which the foil edges are releasably pressed by toggle clamps.

Abstract: An enclosed receptacle has a plurality of outlet nozzles, and is subdivided into two compartments one of which communicates with the outlet nozzles and which are separated by a flexible diaphragm. A cushion of compressed gas is maintained in the other compartment, and an arrangement is provided for admitting printing ink into the compartment communicating with the outlet nozzles.

Abstract: Improved squeegee apparatus for screen printing of carpets and other materials. A reservoir for receiving printing liquid is supported in spaced apart relation with a printing screen having a perforated pattern design therein. A squeegee head having screen-contacting sealing members is suspended from the reservoir with a flexible interconnection allowing the squeegee to ride along the screen surface, as the screen and the squeegee head undergo relative movement during printing. The squeegee head is provided with pressure reactive surfaces which adjust the screen-engaging force of the squeegee head, and also the sealing of the sealing surfaces, in response to pressure of the printing liquid in the reservoir. The present squeegee apparatus is especially useful for rotary screen printing of carpets.

Abstract: A method and apparatus for applying viscous liquid marking substance in which the marking substance is applied in small amounts at spaced-apart locations to a moving web from the open mouth of a narrow channel which intermittently contacts the web, the marking substance passing from a supply thereof into and filling the channel and being collected there during the intervals between successive contacts of the channel mouth with the web.

Abstract: Apparatus for handling a multi-layer tape in a postage meter printing machine wherein a portion of the tape is printed with indicia and advanced to the operator and a protective backing portion is wound up on a motor-driven reel after being separated from the printed portion. Advancement of the backing portion of the tape by the reel advances the separated printed portion to the operator. Prior to being wound on the reel, the backing portion of the tape is guided around two sets of rollers defining three points of tangency with a star wheel having radial projections in registration with slots formed in the edge of the backing portion of the tape. Advancement of the backing portion of the tape rotates the star wheel, which includes a plurality of pins which cooperate with a switch to deactuate the motor of the wind-up reel after the star wheel has rotated through a predetermined arc.

Abstract: The invention pertains to an improved transfer roller for use in continuous type dampening mechanisms for lithographic offset printing presses. The surface of the transfer roller is provided with minute, closely spaced, spiral grooves whereby the fluid feed capacity of such dampeners is significantly increased so as to satisfy the dampening requirements of high speed lithographic web presses.

Abstract: A method and apparatus for printing cloths in a rotary screen printing machine comprising a number of driven cylindrical stencils, the cloths being interconnected by intermediate strips formed from uninterrupted warp threads so as to constitute a continuous web; a special feeder is mounted before the printing machine, said feeder having means cooperating with said strips, said means being synchronized with the rotation movement of said stencils.

Abstract: An apparatus is disclosed for loading a master onto and unloading the master from the rotating master cylinder in a lithographic printing machine at substantially the same angular position of cylinder rotation. The apparatus includes external grippers for gripping a master edge and moving it into the proximity of the cylinder through a master delivery path. Internal grippers for gripping and later releasing the master edge in the proximity of the cylinder are mounted in the cylinder and are extendable beyond the cylinder surface during a first angular sector of cylinder rotation to describe a master receiving path that intersects the master delivery path in a loading merger region. The internal grippers are also extendable beyond the cylinder surface in a second angular sector of cylinder rotation to describe a master release path.

Abstract: Disclosed is an improved method for the inking of an inking roller in conventional printing techniques. The method involves applying an ink film to the inking roller which is everywhere thicker than the desired thickness and applying a doctor blade, mounted at a reverse angle, to the ink to split it and apply it to the roller in the desired thickness when relative motion is provided between the roller and the doctor blade.

Abstract: The printing surface of the cylinder is constituted of an Epon resin on which has been mechanically provided the desired images to be printed. The printing cylinder is preferably a hollow cylinder having a cylindrical body formed of a layer of a wound fabric impregnated with a phenolic resin. The hollow cylinder and the shaft and end flanges of the cylinder are constructed to provide a sturdy printing cylinder, into the hollow interior of the body of which, the inks used in printing cannot seep.

Abstract: A tape guide for deflecting a print-receiving portion of a tape upwardly at the exit of a printing machine of the postage meter type so it can be grasped and torn by the machine operator. The guide consists of interstaggered rollers which have conical cross-sections to present a knife edge or line contact only to the adhesive backing on the tape to preclude adhesive from building up a substantial deposit on the guiding surface. The rollers may increase in diameter in the path of travel of the tape so it is deflected upwardly.

Abstract: A rotary screen printing machine comprising a travelling endless belt and at least one thin-walled cylindrical screen stencil for cooperating with the material to be printed which is supported upon the upper horizontal flight of said belt. A pressure roller and an elastical smoothing blade are arranged above the belt for cooperation with the material in an area lying before the first screen stencil.

Abstract: A duplicating machine wherein adjustment of the location of material to be duplicated on the workpiece is accomplished by resiliently coupling to the machine drive system, the shaft which controls the feeding of the cards which carry the printed matter to be duplicated and by providing an adjustable dynamic load on the shaft to alter the positioning of the master card relative to the workpiece to adjust the location of the printed material on the workpiece.

Abstract: A screenprinting machine has at least one printing station past which an object to be printed travels in a path, and which includes a movable printing screen and a cooperating movable squeegee. A fixed rack extends along this path, and an arrangement is provided which engages and rotates the object to be printed and which includes a gear which meshes with the rack. A drive is provided for moving the squeegee at a constant rate of speed, and another arrangement serves to vary the speed of movement and the stroke of the printing screen in dependence upon the peripheral speed of the rotating object.

Abstract: An apparatus for orienting patterns supported by a silk screen which is advantageously employed in producing multi-layer printed circuits.The screen and the screen carrying frame are mounted into a support and displaced with respect to it so that markers outside of the patterns come to coincide with reference patterns.

Abstract: A horizontal dyestuff-supply tube within a cylindrical printing screen supports a prismatic applicator housing whose bottom is formed from two transversely spaced angle profiles for the guidance of a vertically movable distributing member. The latter is in the shape of a block with a multiplicity of vertical passages terminating at its underside in a discharge slot, the block penetrating upwardly into the applicator housing and supporting a perforated slack membrane of rubber or the like secured to the upper block surface and to the lateral inner bottom surfaces of the housing to form aprons preventing the penetration of dyestuff along the guide surfaces of the angle profiles. These profiles may be interconnected by transverse bolts passing through vertical clearances formed in the distributing member between its passages.

Abstract: A rotary screen printing machine comprising at least one cylindrical thin walled stencil with an internal squeegee for pressing the printing paste through the perforations of the stencil, said squeegee consisting of a thin metal strip having a covering layer of synthetic material upon the face turned towards the inner wall of the stencil.

Abstract: A machine for printing a recurrent pattern on sections of predetermined length of a textile web, comprising a number of parallel rotary-screen printing units spaced apart in the direction of web motion, includes a first sensor for detecting the leading edge of an oncoming web section to be imprinted and a second sensor for ascertaining the passage of a mark indicating the start of a printing pattern on the first unit. The odd-numbered units print the first half of the pattern, in different colors, whereas the even-numbered units print the second half in corresponding colors; between printing operations, the screen of each unit is lifted off the web and can be angularly readjusted to compensate for relative disalignment between the web sections and the printing patterns.

Abstract: A machine for copying of patterns for use in the garment industry incorporating the spirit duplicating process. The machine incorporates a pair of nip rollers between which is engaged a master pattern paper and copy paper. The copy paper is fed from a supply roll over a spirit applicator and is wrapped around the bottom nip roller, wet side out, contacts the master pattern paper at the nip, and then travels to a rewind roll. The master pattern paper travels from a supply spindle to the nip and then to a take-up spindle. The nip rollers are separated by a cam action. Control of the operations of the machine is effected by a single control arm which, in its rear position, separates the nip rollers and engages drive means to rewind the master pattern. In the forward position, the control arm brings the nip rollers together, engages drive means for the take-up spindles for the master pattern paper and the copy paper and activates the drive for the nip rollers and the spirit wetting roller.

Abstract: This disclosure is directed to a pallet type screen printing machine in which a pallet is indexed to a printing station when an article supported thereon is screen printed. A feed table with guides is cooperatively disposed relative to the pallet at a feed station to facilitate the accurate positioning of a work piece onto the pallet. The machine comprises an endless drive for effecting movement of one or more pallets to and from a printing station in an endless path whereby the face of the pallet is always maintained in a face up position. The pallet is formed to define a vacuum chamber which is operatively connected to a source for drawing a negative pressure thereon. A flexible coupling operatively connects the pallet to the endless drive to permit limited movement of the pallet so that the pallet may be brought into accurate registration with the printing head at the printing station.