Abstract: In an automatic drafting device having a carriage with toothed wheels in meshed engagement with a toothed rack which extends across a planar drafting surface and with a control mechanism for controlling movement of a stylus on the carriage to effect drafting operations, there is provided an adjusting aid arranged at the stylus for determining a writing position and a compensating control mechanism for automatically compensating for the distance between the writing position determined by the adjusting aid and the position of the stylus, this compensation being performed when the distance is greater than zero.

Abstract: A device for supporting press belts on a roller-supported double belt press for applying support pressure includes a roller bed, press belts arranged to pass over the roller bed, and a seal between the roller bed and the press belts. The roller bed includes a heating plate with a plurality of laterally spaced support bearing strips located on the heating plate and extending in the direction of movement of the press belts over the roller bed. Shafts extend through spaced openings in the support bearing strips with rollers axially serially arranged on the shafts. Rollers on adjacent shafts are closely spaced apart and are axially offset relative to one another. Filling bodies are positioned between laterally adjacent rollers. Narrow gaps are provided between the rollers and the support bearing strips, between the filling bodies and the press belts, and between the rollers and the heating plate so that the lubricant can be moved through the gaps from the inlet side to the outlet side of the roller bed.

Abstract: An arrangement for the support of press bands in double band presses includes a press band with a roller bed supporting the rear side of the press band. Seals are positioned between the roller bed and the rear side of the press band. A heating plate is disposed within said roller bed and is in spaced relation with the press band. Support-bearing bars are supported on the heating plate and extend between the heating plate and the rear side of the press band. Shafts extend through bores in the support-bearing bars and needle rollers are mounted on the shafts. The ends of the needle rollers in adjacent rows are offset. Filling elements are positioned within and fill out the hollow spaces between the rollers. The parts in the roller bed form rolling gaps, capillary gaps and support bearing gaps and these gaps are limited to a minimum and a lubricant is filled into the gaps.

Abstract: A press band arrangement for double-band presses for applying surface pressure on plate-shaped workpieces, continuously guided through such presses, are made up of single or multiple layer press bands. Each layer is formed by a number of individual, side-by-side, unconnected strips. In multiple layer press bands, the longitudinal edges of the strips in adjacent layers are offset relative to one another.

Abstract: A method for continuously producing endless laminates from paper fiber layers consisting of saturating fiber layers with hardenable heat-setting resins followed by drying said saturated fiber layers in a drying tunnel and immediately followed by passing said fiber layers through double-belt press laminating means for curing and further drying to harden said impregnated fiber layers.

Abstract: An automatic drafting device has a carriage with toothed wheels in meshed engagement with toothed racks extending across a planar support surface. A pressure regulation device is mounted on the carriage and regulates the pressure applied to a stylus holder held by the device. The stylus holder containing a writing instrument can be lifted and lowered by a direct current motor with an eccentric disc. The writing tip of the instrument held in the stylus holder, when not in use, is supported on a soft resilient material, such as rubber, to form a seal preventing air from reaching the tip. When the writing instrument is lifted off the resilient material it is ready to write.

Abstract: A machine for guiding numerically controlled supports for tools used for various woodworking operations, such as boring, milling and the like, for improving the relationship between the time for positioning the workpiece and for processing the workpiece includes a base on which frame supports mount guidance supports. Tool support guides are mounted on the guidance supports for movement in two directions extending perpendicularly of one another. Conveying members including retaining members extend along the guidance supports for moving workpieces through the machine. Tool support guides are located on the guidance supports for displacement in the two different directions of movement. Upper and lower tool supports are positioned on the tool support guides along with gripping members. Using this combination of components, the speed of movement of the workpiece can be synchronized with the processing time for the workpiece.

Abstract: An electrically operated driving device includes a bell type armature motor with a hollow shaft containing an internal thread. An axially extending threaded spindle is located within and in threaded engagement with the shaft. The rotation of the hollow shaft is transformed into liner motion effected by the spindle. The movement of the threaded spindle relative to the hollow shaft can afford a different speed and/or a different direction of rotation. The armature is of the iron-free or ironless type. The device operates at the least weight almost inertialess, and converts the produced power without significant friction losses and it can be used in a very limited space.

Abstract: A ring wedge joint for interconnecting solid or laminated wood sections, such as bar-shaped or rod-shaped sections used as chair parts, tool handles, window frame sections and the like is formed by alternating ring wedges and ring wedge grooves on the end surfaces of the sections to be connected. The ring wedges and the ring wedge grooves on the end surfaces are offset relative to one another so that the ring wedges on one section fit into the ring wedge grooves on the other. Preferably, the opposite sides of the ring wedges converge toward the end surface of the wood sections while the opposite surfaces of the ring wedge grooves diverge toward the end surfaces.

Abstract: A device is arranged to seal inserts between a pair of plastics material sheets. The device includes a double belt press forming a heat sealing press and made up of a pair of press belts one located above the other. Each of the press belts includes an inlet roller, an outlet roller and a belt trained over the inlet and outlet rollers. Supply or guide rollers direct the plastics material sheets onto the belts at the inlet rollers. The inlet rollers are heated and the guide rollers are selectively positionable relative to the inlet rollers so that the contact of the plastics material sheets with the belts at the inlet rollers can be selectively varied for providing the desired heating action. The inserts are sealed between the sheets as they pass between the press belts. At the outlet roller ends of the press belts the sealed inserts are separated from the plastics material sheets. The temperature of the heated inlet rollers is maintained within .+-.1.degree. centigrade by circulating thermal oil through them.

Abstract: A support element for supporting a rotatable belt in a double belt press, which element includes a central portion presenting a reaction zone in which pressing forces are generated and end portions enclosing the central portion and defining belt return regions for the rotatable belt, is composed of a first part defining the central portion, a second part defining one end portion coextensive with the first part along a meeting plane and movable relative to the first part, components establishing a pivot connection between the parts along one edge of the meeting plane, and two piston-cylinder units mounted between the parts in the vicinity of the edge of the meeting plane opposite the one plane and spaced apart in a direction parallel to the axis of the pivot connection between the parts, the units being arranged to pivot the parts away from one another under the action of pressure medium in the cylinders of the units and to produce respectively different operating forces.

Abstract: A slide surface seal for laterally sealing a pressure cushion formed between a pressure plate and a metal belt advancing parallel to the plate in a moving belt laminating machine operating according to the pressure cushion principle, the seal being arranged to be mounted in a groove formed in the pressure plate and to bear against the metal belt to laterally surround the pressure cushion and to establish a fluid seal between the plate and the belt and the seal being composed of a seal mount of rigid material arranged to be inserted in the groove, at least one sealing strip secured to the mount and arranged to bear against the belt for maintaining a gap of minimum width between the seal and the belt, and an elastic sealing member secured to the mount adjacent the side of the sealing strip directed toward the interior of the pressure cushion and arranged to bear against the belt for maintaining losses of pressure medium from the cushion at a minimum.

Abstract: In a continuous laminating machine for exerting a pressure over an area on a moving panel of material, which machine includes a stationary supporting structure composed of two supporting elements, each supporting element presenting a parallel pair of planar outer faces and semicylindrical outer end faces extending between the planar faces, two steel pressing belts each supported by a respective supporting element and each disposed to press against a respectively opposite side of such a panel in the region of one planar outer face of a respective supporting element for applying such pressure thereto, bearing elements providing a rolling bearing between each pressing belt and its respective supporting element, and clamping plates connecting the supporting elements together, the bearing elements include a plurality of cylindrical rolling elements and a plurality of spacer profiles alternating with the rolling elements and provided with arcuate recesses adapted to the configuration of the rolling elements so that

Abstract: In a device forming a pressure cushion in a double belt press, the device including a pressure plate mounted in one support structure of the press, and a sealing member seated in a groove in the pressure plate to bear against the associated steel belt such that the sealing member, the steel belt and the surface of the plate surrounded by the groove together delimit a chamber arranged to contain a pressure medium to form the pressure cushion, the sealing member includes an elastically yieldable component extending around the entire path of the groove and arranged to be in sliding contact with the associated belt, and two wall components of rigid material each disposed along a respective lateral surface of the elastically yieldable component which extends transverse to the surface of the support plate and each located along at least one groove portion extending generally in the direction of belt advance, the pressure plate includes supporting elements defining at least part of the groove portions extending gene

Abstract: The apparatus is used for the automatic marking of drawings with alphanumeric and other drawing symbols. A carriage is designed to travel over the drawing without damaging the drawings. Means are provided to rigidly hold the carriage in place over the point on the drawing to be marked. Stylusses of varying sizes are interchangeably fitted on the carriage. Flexible cables connect the carriage to a control unit. Stored programs of the control unit are used to direct the marking operation. The unused stylusses are stored in appropriate receptacles in the control unit. A keyboard can be used to select the desired marking program.

Abstract: A sliding surface seal on continuous laminating machines, with object to be laminated placed between two endlessly rotating bands. Pressure is built up on backside of these bands facing away from the object, by fluid in the chambers formed by the bands, by pressure plates fastened in the machine and by sliding seals. These seals are arranged in grooves encircling the edge of the pressure plates by fluid or mechanical pressure or by reaction forces issuing from the pressed object, movable outwardly or inwardly relative to the groove. The seal has U-shaped holding strips and support angles directed laterally or towards the groove bottom on the holding strips to absorb the thrust, acting in the lengthwise direction, and corresponding recesses on the pressure plates issuing from the grooves on both sides of the groove or in the groove bottom. Radial slide bearings of dry sliding material may provide the support surfaces which absorb the friction forces.