Abstract: An apparatus for closing a door (14), the door closer assembly (10) preferably including a torsional spring unit (12) and a pneumatic check device (22). The torsional spring unit (12) can be attached to a door frame (16) through the use of a bracket (20) whereas the pneumatic check (22) can be attached to the door (14) through the use of a bracket (24). The amount of closing force generated by the torsional spring unit (12) can be adjusted by tensioning the torsional spring (26); locking the two housing components (34) and (46) together; repositioning the locked housing unit and the door (14); and releasing the housings (34) and (46) to "restore" the formerly stored closing force at a new door position.

Abstract: With a punching machine with at least one punching carriage, which can be moved transverse to the advance direction of a material belt, with a piston cylinder unit arranged in the punching carriage, which effects the punching stroke of a tool stamp and, with an abutment for receiving a tool die-plate, it should be guaranteed that, a female die is always realized absolutely exactly below the punching material opposite the male die. This is achieved in that, the abutment is firmly arranged in a defined position to the piston cylinder unit in the punching carriage carrying the piston cylinder unit.

Abstract: Rotating cutting element (1) having a row of cutters (5) placed in recesses at the circumference of a disc. Each recess has radially extending V-shaped front and rear edges (4,3), each cutter (5) has V-shaped front and rear edges (6,7) with the apexes facing away from each other. Each cutter (5) is held in the recess against an abutment (9) by means of a wedge (10) which is tensioned by means of a screw (15).

Abstract: A punch is provided having a novel tooth configuration wherein the tooth has piercing points at the centers of the extreme ends of a rectangular shank with an arcuate surface connecting the two points and with four concave surfaces connecting the sides of the arcuate surface with flat sides of the rectangular shank. The punch has a double action wherein it first pierces the paper and then shears the side walls so that a minimum amount of energy is necessary.

Abstract: A scoring saw is disclosed for use in association with a main saw blade and disposed forwardly of the main saw blade and rotating in the opposite direction. A mechanical connection transmits the power from the main blade to the scoring blade. The mechanical connection is mounted in a longitudinal casing which is pivotally carried at one end on the axle of the main blade and which rotatively carries the scoring blade at its free end. A support assembly is constructed and arranged to vertically adjust the casing and therefore the scoring blade. An adjustment is further provided to transversely align the scoring blade with the main blade.

Abstract: A lumber incisor comprising a rotatable drum. A plurality of annular incisor rings are mounted on the drum to turn with the drum. Teeth on the periphery of each incisor ring, extend outwardly from a tooth base on the periphery of the incisor rings. An annular spacer ring is positioned between each pair of neighboring incisor rings. An annular cleaning ring surrounds each spacer ring and is freely movable between the neighboring incisor rings. Each of the above annular rings has an inner radius, an outer radius and a ring width equal to the outer radius less the inner radius. The spacer rings have an outer radius less than the outer radius of the incisor rings. The outside diameter of each cleaner ring is at least equal to the incisor ring outside diameter plus a height of one tooth.

Abstract: The cutting apparatus with rules comprises a cutting form placed in an upper panel support (5) and a lower panel. The panel support (5) is constructed in a fashion enabling it to be withdrawn from the apparatus for purposes of replacing it. The replacement cutting form, supported in another panel support (5) previously prepared, is placed on the lower guides (19) of an adjustment table (14). The adjustment table (14) is brought up against the guides (4) which support the panel support (5) to be replaced in the machine. The latter is withdrawn from the machine so as to come to rest on the upper guides (19) of the adjustment table (14). This pivots by 180.degree. and the replacement cutting form is pushed onto the guides 4 situated in the cutting station.

Abstract: A method of cutting reproduction images from a sheet of photosensitive film on which the images are recorded comprises controlling a cutting means in accordance with position data of exposed areas corresponding to at least one original.

Abstract: An annular air-hammer apparatus for drilling holes incorporates a hollow cylindrical case with a stepped bore which has inlet and outlet ports. A rock-cutting tool with an axial opening is fitted to the case at the forward end thereof. A chips-receiving sleeve and a stepped ring-shaped hammer are located inside the case, whereby the hammer forms a working-stroke chamber with the case and an idle-stroke chamber with the case, the rock-cutting tool and the chips-receiving sleeve. The chips-receiving sleeve has a cylindrical protuberance at its upper end which interacts with the hammer when this is in its topmost position. A channel is provided in the idle-stroke chamber at that side thereof which faces the upper end face of the hammer.

Abstract: A device for aligning and cutting lengths of terrycloth along the woof thread comprises two aligning ledges capable of movement relative to one another that can be lowered into the pileless rows of the length of material. The aligning ledges are connected each with one of two diagonally opposite joints of a parallelogram frame. On the two intervening joints is mounted a cutting device that operates transverse to the direction of feed of the length of material with a cutting plane that is always located exactly in the middle between the two aligning ledges.

Abstract: A hand-held plier type stapler having a first rearward handle to which an anvil is pivotally mounted. The first handle provides a housing for a belt stapler head for forming and driving staples. A second forward handle is connected to the anvil to pull the anvil down as the second handle is moved down and rearward and as such movement continues a link mechanism operates the stapler head to form and drive a staple.

Abstract: Thumb mountable cutting tool includes a sleeve which receives a thumb of the user and a blade is secured to and extends longitudinally along the sleeve. The tool is placed on the user's thumb, with the blade extending away from the hand, or along the outside portion of the thumb or the top portion of the thumb, and is accordingly in position for cutting tape by a cutting motion of the hand or the thumb. The blade is preferably a serrated blade to facilitate cutting tape and at the same time to prevent possible injuries which may occur if the blade were smooth and continuous. The serrated edge readily cuts all kinds of tape, including tape with fibers embedded therein. For cutting boxes, the tool may be removed from the thumb and held in the hand for additional leverage and ease of cutting in different directions as may be required in opening boxes.

Abstract: The tool holder of a machine for cutting a supply of insulated electrical conductor into discrete lengths employs a standard cutting blade. The standard blade serves as the outer boundary of the tool holder and of the remainder of the machine, thereby assuring that the cut lengths can pass to the next processing station without striking any component and thereby become disoriented. Use of the standard cutting blades is accomplished by employing conventional fasteners to retain the blade on the tool holder. The cutting blade is located in the tool holder by a slotted member and blade shank end locator.

Abstract: A method of controlling a cutting machine to cut workpieces according to the machinability of the workpieces includes the steps of providing a plurality of predetermined constant voltage outputs, each constant voltage output corresponding to a predetermined cutting speed for the cutting machine, selecting one of a plurality of constant voltage outputs in response to a desired workpiece material to be cut by the machine, and driving the cutting tool at a predetermined cutting speed corresponding to the desired material to be cut in response to the selected constant voltage output.

Abstract: A method and apparatus for controlling the cutting of bandsaw machines includes continuous feeding of the bandsaw blade relative to the workpiece by alternating the speed at which the bandsaw blade is fed relative to the workpiece between fast and slow, so that the bandsaw blade is continuously periodically fed relative to the workpiece alternately fast and slow. In a first embodiment, the bandsaw blade is fed into the workpiece and a continuously operating control motor is used to control a flow valve to alternate the speed at which the bandsaw blade is fed into the workpiece. In a second embodiment, the workpiece is fed into the bandsaw blade and a continuously operating control motor is used to control a flow control valve to alternate the speed at which the workpiece is fed into the bandsaw blade.

Abstract: A base structure of a motor saw forms fuel and oil tanks (16,17) and a crankcase bottom in one piece. This piece is injection moulded in plastics with closed tank cavities obtained by means of cores in the mould which are made of a metal having a melting temperature lower than the softening temperature of the plastic material. After moulding the cores are melted by heat treatment and the metal runs out through filling holes (18,19) of the tanks. Armouring pieces are moulded in the plastics to reinforce the attachments of crankshaft bearings and the guide bar.

Abstract: A roll paper handling device for use in various recording machines, such as facsimiles and copiers, which employ recording paper in the form of a roll is provided. The present device includes a box in which a roll of paper may be rotatably installed in position which may be moved between an operative position where a lead out paper portion unrolled from the roll may be fed to a desired location and an inoperative position where the roll of paper may be replaced and a locking mechanism which allows the box to be moved to the inoperative position only when said lead out paper portion has been completely pulled back into the box. The locking mechanism is also so structured so as to apply a back tension to the roll of paper thereby allowing to prevent the roll of paper from rotating exceedingly.

Abstract: A web of foam material is fed to a cutting station by upper and lower rollers drawing the web from a supply roll and along a low-friction table surface. A cutter station has a knife bar and blade, with a clamp bar coupled with the knife bar. The lower draw roller has its axle mounted in a pair of pivoted arms depressible by presser feet on a presser foot bar carried by the knife bar. When a desired length of web has been drawn past the cutter station, actuation of the knife bar lowers the blade toward a grooved anvil, while the presser feet swing the arms down to depress the lower roller away from the web to stop drawing it. Immediately after interrupting drawing action, the web is clamped by the clamp bar, and then immediately thereafter cutting occurs. The table has bridge-like fingers extending downstream through grooves in the movable lower feed roller. These fingers support the web when the lower roller is swung down.

Abstract: A device for servicing fabric that is composed primarily of man made fibers such as polyester. The device includes a heated cutting element and two channels that smooth and form the melted edges of the fabric to a desired contour and thickness.

Abstract: In a cutting and mounting apparatus for cutting a film section (9) which can be lowered into a slide mount (10) positioned below a cutting tool (5) in a slider (7), and which upon withdrawal of slider (7) can be snapped into the slide mount (10) while resting against a guiding jaw (2a), said guiding jaw (2a) forms part of a cover plate (2) serving for supporting a cutting plate (3) and covering the guide channel (1a) of slider (7). The slide mount (10) is urged against the stationary guiding jaw (2a) free from play by means of a leaf spring (8) extending below the slider (7). During this operation, the front edge of the film section (9) abuts against an offset abutment edge (2e) of the guiding jaw (2a) so that the film section (9) is slid into a rear slot of the slide mount (10), is bent and snaps into a front slot in the slide mount (10).