Abstract: A printing machine for printing on a web includes a first roller and a second roller between which the web forms a loop. A trough for pneumatically guiding the loop equidistantly to the major part of the length of curvature of the trough is provided between the first roller and the second roller.
Abstract: The present invention describes an assembly to control fan-out on a multi-color offset printing press. The assembly includes an arm that pushes the paper into proper alignment before the printing of a succeeding color. The assembly may be fitted to existing presses and may be adjusted to accommodate papers of various widths and moisture content.
Abstract: A multi-end strand tension controller has an overfeed roll and an underfeed roll with strand engagement surfaces. Depending on the outgoing tension, the strand positioner selectively apply the strand against one of the underfeed rollers to adjust the tension and the output of the tension controller. The underfeed roller is fed at a speed slower than the speed of the strand while the overfeed roller is fed at a speed greater than the speed of the feed of the strand. Multiple strands forming the web can be provided utilizing a controller and different predetermined tensions may be applied to each of the individual strands based upon loading of individual strand positioners.
Abstract: A ticket dispensing apparatus is provided including a framework having a driver roller rotatably coupled to the framework to dispense tickets therefrom. Also included is a sensor for monitoring the dispensing of the tickets. A motor is coupled to the drive roller and in communication with the sensor to rotate the drive roller and thereby advance the tickets. Further coupled to the framework is a support for supporting the tickets. For maintaining the tickets in operational relationship with the sensor and the drive roller, at least one guide is coupled to the support. In use, the guide is adjustable to accommodate tickets of varying widths. Also, the guide is substantially rigid in order to avoid bending the tickets.
Abstract: A processing apparatus for performing work operations on a sheet material includes a frame, and an advancing mechanism for feeding the sheet material through the apparatus. Additionally, an elongated tool head support is provided on the frame carries a tool head which moves along the support's length during a work operation. A retaining device such as, a magnetic or spring actuated clamp is also attached to the frame for retaining the sheet material as it is fed out of the processing apparatus. The use of the retaining device combined with the advancement of the sheet material causes the formation of a vertical loop in the material. The vertical loop causes the speed at which the advancing material approaches the floor or other horizontal surface to be reduced, thereby causing a concomitant reduction in the impact force of the sheet material with the floor. In addition, the vertical loop formed by the retained sheet provides a cushioning effect, further reducing the generated impact force.
Abstract: A material transfer device for continuously feeding or outputting strand material into or out of a treatment room, as well as to a material transfer structure. In order to maintain a desired treatment atmosphere in the treatment room, a material transfer device which is free from wear and trouble and has a good sealing effect. The material transfer device has a passage element, an inlet opening of which has a variable cross-section. The cross-section is either varied by a pressure device or by internal forces in a circumferentially expansible tube. Further, a pulling device pulls the strand material through the passage element. A plurality of chambers are arranged one behind the other, through which chambers the strand material travels both towards and out from the treatment chamber. The material passages of the chambers each have locks.
Abstract: A redemption ticket and dispenser therefor. The redemption tickets or "stamps" are printed with indicia that include a sequence of successive characters printed across multiple tickets. The tickets may have about a thickness of white bond paper (20 lb.) and a length as little as three-quarters of an inch. A notch is cut at a perforation between each of the tickets of the strip, and the ticket strip can be gummed to allow the tickets to adhere to a surface. A ticket dispenser for dispensing the improved (or other) redemption tickets receives a ticket strip from a ticket supply and includes a rear guide, sensor, front guide, and drive roller along a ticket path. The drive roller engages and pulls the tickets strip along the ticket path, while the rear and front guides align the ticket strip. The ticket strip is wrapped at least partially around the guides and drive roller so that drag is induced on the ticket strip to prevent a recipient of the tickets from pulling the tickets out of the dispenser.
Abstract: A printing device with friction drive for processing continuous paper. For this purpose, it contains a friction drive (8) comprising friction rollers, between which the recording substrate (A) is passed through, and a paper feed device (PZ). In the paper feed device (PZ), the recording substrate (A) is aligned in a web precentering device (3), is thereafter braked in the recording substrate transport direction, so that the recording substrate (A) assumes a predetermined position in the friction drive (8). After that, the recording substrate web is stabilized in a stabilization zone by stabilization rollers (9) and is fed via a festoon device (10) to the drive (8) of the printing unit (DA).
Abstract: A device for aligning material webs which in a longitudinal direction have alternating regions of differing thickness, has a top and a bottom aligning rail, which are disposed substantially at right angles to the material web and opposite one another with slight clearance. The top aligning rail has a row of aligning elements which are disposed in a longitudinal direction of the aligning rail. They are supported so as to be movable substantially at right angles to the plane of the material web and may be brought to rest on the bottom aligning rail with the material web for alignment lying in between. The aligning elements are supported in a substantially freely movable manner in the top aligning rail such that they may be brought under the action of gravity to rest on the material web. The aligning elements after being brought to rest on the material web are releasably fixable in the top aligning rail.
Abstract: A winding tension controlling apparatus controls tensile force to be applied to a tire constituting member spirally wound about a building drum. The apparatus comprises a memory device for storing patterns of tensile forces, a detecting sensor for always detecting winding positions of the tire member and a processing unit for obtaining a tensile force value from a pattern of tensile force received on the basis of the memory device and a detected result from the memory device and outputting the tensile force value as a control signal. The apparatus further comprises a regenerative control device for controlling a DC motor connected to a tension roller to cause the tension roller to rotate at a speed slower by a predetermined value than a running speed of the tire member wound about the building drum and a display device for displaying various informations concerning winding of the tire member.
Abstract: An apparatus and method are provided whereby two superposed strips (26, 28) of documents are conveyed in a direction of conveyance (30) toward a downstream workstation. The strips (26, 28) are conveyed over one another in a direction of superposition whereby leading edges of documents of one strip alternate in sequence in the direction of conveyance (30) with the leading edges of documents in the other strip. A determination and control circuit (190) is provided to determine whether the leading edges of documents in one strip are tending to creep up on the leading edges of documents in the other strip due to differing speeds of motion of the two superposed strips. If a creeping condition is determined by the circuit (190), the circuit (190) energizes braking means (400) whereby the motion of at least one of the strips is at least temporarily retarded for rectifying the creeping condition.
Abstract: An automatic decurling apparatus is provided for webs of paper material in which two small diameter decurling bars are adjusted into both sides of the web run between two closely spaced rollers around which the web passes in an S-wrap. The decurling bars can be independently adjusted into the web in varying degrees to compensate for predominant curl in one direction of the web. Additional decurling can be obtained by chilling the rollers, incorporating high-intensity dryers in the web path or by moisturizing one or both sides of the web prior to its passing the decurling bars.
Abstract: Apparatus for removing curl from a continuous moving web. The apparatus includes cylindrical members for supporting and directing the continuous web during its travel and a pair of engagement members between which the web travels. The engagement members are pivotally movable so that either surface of the web can be engaged by one of the engagement members with any desired degree of pressure for removing the curl in the continuous web during travel thereof. If the curl is upwardly, the engagement members are pivoted to engage one surface of the continuous web. If the curl is downwardly, the engagement members are pivoted to engage the opposite surface of the web. The degree of pressure applied for decurl action can be adjusted by adjusting the angle of the engagement members with respect to the line of travel of the continuous web. The apparatus also includes brush members engageable with the web to control the tensional forces upon the web as the web engages one or both of the engagement members.
Abstract: To apply a braking force to only one face of travelling strip material with the least possible surface scratching, it is passed over an evacuated box having a perforated wall covered by a permeable layer.
December 9, 1980
Date of Patent:
September 21, 1982
Peter Frohling, Franz F. Schulz, Karl Wiedemer
Abstract: Means are provided for accurate incremental feeding of web material from a supply to a work station by a combination of intermittent drive means for advancing the web and electrically controlled magnetic brake means for clamping and stopping the web after a desired increment thereof has been fed from the supply to the work station. In one embodiment the intermittent drive means comprises a second magnetic brake means reciprocated through advance and retraction strokes of predetermined length which is actuated and deactuated in phase opposition with the first brake means to effect the incremental advance of the web. In another the embodiment intermittent drive means is comprised of sequential feed rolls which nip the web material over a predetermined circumferential extent of the rolls to effect a given incremental advance.
Abstract: In a web feed apparatus wherein a section of the web is maintained at a higher tension while accurately metering the feed of the web at a relatively lower tension, and wherein means are provided to isolate the low tension metering function from the higher tension section by anterior snubbing rolls, the web tension is controlled by modifying the gain produced by the snubbing rolls and feeding back any increase in tension from the lower web tension level to the higher web tension level. Such a gain is modified by controlling the total angle of wrap of the web about the snubbing rolls, or by varying the coefficient of friction between the web and the snubbing rolls.
Abstract: Inlet guide structure is provided having complementary outer and inner guides which are adapted to receive film from a drive sprocket of a rolling loop film transport mechanism and to guide the film inwardly towards a path defined between the stator and the rotor of such a mechanism. The outer and inner guides have respective pairs of co-operating side faces for guiding side portions of the film remote from a centre portion of the film. The side faces of the outer guide define a rounded nose portion intermediate ends of these side faces, and the side faces of the inner guide define a depression corresponding to the nose portion so that when in use the guides combine to form a passage which guides the film by contact between the side faces and the side portions of the film.
Abstract: A machine for interrupting a portion of an otherwise continuously moving web of material to enable one or more manufacturing operations to be performed on the stopped portion of the web while the remaining portions of the web are advanced continuously. The machine is interposed between a pair of other machines in a production line in which one of the machines continuously feeds the web to the interrupting machine and the other machine continuously draws the web from the interrupting machine. The interrupting machine includes means to take up the web fed continuously to the interrupting machine as well as means for storing and paying out a length of web from the outlet end of the machine. The web is advanced and stopped in precisely controlled incremental lengths to insure proper registration of the stopped portion of the web with the manufacturing instrumentalities mounted on the interrupting machine.
Abstract: Apparatus for stopping and holding a rope is disclosed. The apparatus includes a power drum, a wind up mechanism having two small drums and an air operated chain drive system between the power drum and the wind up mechanism. A rope is threaded through the apparatus such that the rope passes between the two drums of the wind up mechanism and is wrapped once around the power drum. When the chain drive system is not energized, the rope is free to move in either direction through the apparatus; however, when the chain drive system is energized, the rope is wrapped around the two small drums of the wind up mechanism and is thereby stopped and held under tension from further pay out through the apparatus.
Abstract: A photographic printer wherein a web of photographic paper is being withdrawn by advancing rolls stepwise from a supply reel and is fed toward a copying station where successive increments of the web are exposed to light during intervals of idleness of the advancing rolls. The copying station is followed by a loop former for the web, by two normally spaced-apart rollers which are located at the opposite sides of the path for the web, and by a motor-driven flangeless takeup reel. One of the rollers is coupled to a hysteresis brake and the other roller can be propelled toward the one roller by an electromagnet which is energized when the motor for the take-up reel is arrested whereby the rollers pinch the web with a force which prevents any slippage of the web. The motor is started and stopped when the size of the loop respectively reaches a preselected maximum and a preselected minimum value.
August 29, 1975
Date of Patent:
May 24, 1977
Adolf Fleck, Christian Gotze, Erich Nagel
Abstract: Apparatus is described for preventing web weave from occurring at the exit from a corrugator bridge wherein a single face corrugated board is being drawn from the bridge by a glue machine. The single face web may be present on what is termed the upper bridge or the lower bridge and control is maintained by providing a friction plate faced with canvas which is biased against the single face web as it is traveling over an exit guide roll. Typically, a single face board is produced on a corrugator in widths of 80 to 86 inches and the friction plate is less in length than half the width of the paper. The drag force is regulatable by an operator adjustment of air pressure being delivered to biasing air cylinders.
Abstract: A control system for one or more vacuum holddown devices for use in an apparatus employing flexible web material in a flattened condition. A plurality of perforated plenums are joined to a manifold connectible to a vacuum producing means. The pressure within the manifold is sensed and must be at a predetermined pressure before the drive system for the web material is activated thereby preventing bulging or buckling of the web material during startup and normal running of the material.
February 22, 1974
Date of Patent:
March 30, 1976
William E. Jordan, Edward L. Steiner, Kenton W. Fiske