Abstract: Apparatus and method for forming disks or other articles from flexible sheet material. The disks can be used, for example, as substrates of magnetic recording disks known as floppy disks. The apparatus includes an upper die plate shiftably mounted above a lower die plate and having a die thereon so that a strip of material moveable between the die plates can be sequentially die-cut to form the disks. The upper die plate has quick release latches attaching the upper die plate to a support so that, when the latches are retracted, the upper die plate can be quickly and easily removed from the apparatus to permit the die to be sharpened or replaced. The apparatus includes air delivery ports near the upper and lower die plates to direct air under pressure against a disk after it has been die-cut from the strip so that the disk will be moved laterally and into a chute and onto a spindle which receives a stack of the disks.

Abstract: A truss component saw apparatus having multiple saws arranged in two sets for providing a variety of angular cut-offs for lumber lengths. The saws in each set are arranged for adjustment movements involving from 1 to 4 degrees of freedom of movement. An automatic control mechanism is provided for automated adjustment of the saws to predetermined positions. The degrees of freedom are linear, pivotal, and movement within an X-Y coordinate plane arranged substantially perpendicular with respect to the pivot axis established by the saws within a given set of saws. A lumber conveyor system is provided for the apparatus.

Abstract: A compact earthdrilling module for vehicle mounting includes a derrick having a conventional tophead-drive drill assembly slidably mounted thereon. The derrick includes an extendable top portion mounting a hoist. A single telescoping piston-cylinder assembly on the derrick moves the drillhead assembly along the derrick and extends the top portion of the derrick. The piston-cylinder assembly is hydraulically actuated.

Abstract: A percussion tool utilizing a reciprocatory piston movement for applying an impact force on to a working surface including a casing (1) having disposed axially therein a hammer member (12), an anvil (5) impacted by the hammer member and a chisel point (4) supported by the anvil. A spool valve (18) is located within the interior of the hammer member for reciprocatory movement in unison with the hammer member, the control the flow of a pressurized working fluid supplied to the hammer member, to thereby cyclically move the hammer member in reciprocatory movement.

Abstract: A device for "dressing" welding electrode tips is disclosed. The device utilizes an integrally formed air motor, retained within a housing member, to drive a gear train which rotates the welding tip cutters. The air motor is actuated by relative longitudinal movement, in either direction, between the housing member and a carriage member which acts as the base for the device. The longitudinal axis of the air motor is parallel to the direction of travel of the housing member with respect to the carriage member thus eliminating the need for bevel gears in the gear train.

Abstract: A paper salvage attachment assembly of a paper cutter utilizes a horizontally reciprocable infeed conveyor assembly having an endless conveyor belt which fees bound products to a position beneath the cutting blade of a paper cutter assembly. An outfeed conveyor and stop bar assembly supports the bound product during severance of the spine from the found product. An adjustably positionable stop bar assembly is used to position the vertically reciprocable stop bar at a point downstream of the cutting blade to properly position the bound product so that only its spine will be severed. As the spine is out, the infeed conveyor assembly is retracted away from the paper cutter so that the severed spine may fall through the thus created gap and onto a scrap take away conveyor.

Abstract: Pile-driving apparatus comprises a drop hammer for imparting blows; a winch for lifting the drop hammer between successive blows, the winch comprising a winch drive, a winch drum, a clutch for disengageably engaging the winch drive with the winch drum, and a rope or cable connecting the drop hammer to the winch drum; a sensor comprising a mercury containing container mounted on the driven object or the hammer and having electrical terminals, for sensing the delivery of a blow by the drop hammer; and a timer. Upon sensing of the delivery of a blow by the drop hammer, the sensor causes the clutch to engage and the timer to be triggered. Upon engagement of the clutch the winch lifts the drop hammer. At the end of a predetermined time interval, determined by the timer, the clutch disengages again, thereby allowing the drop hammer to fall. This process repeats itself automatically.

Abstract: A door check wherein a housing is affixed to the pivotable panel and a guide rail is affixed to the frame of a door. The housing contains a shaft which is rigidly connected with one end of an arm the other end of which is slidably guided by the rail. The shaft carries a disc cam having two asymmetric sections one of which is tracked by a spring-biased follower tending to return the panel to its closed position and the other of which is tracked by the piston of a damper which yieldably opposes the movement of the panel back to its closed position. The configuration of the two cam sections is selected with a view to allow for a reduction of the resistance which the follower offers to opening of the door shortly after the panel leaves its closed position as well as to ensure that the damper can operate independently of the follower and vice versa.

Abstract: A percussion drill has a percussion drill spindle and a drill chuck member which is turned and axially driven by the spindle. The drill chuck member has an axial passage through which the respective percussion action can be transferred from the spindle to that end of the drill which is held between centrically movable and adjustable chuck jaws. The drill chuck member can be axially moved on the percussion drill spindle, and the distance of movement can be limited in the forward direction towards the drill by an abutment. The abutment is formed, on the one hand, by an annular collar which is arranged at the percussion drill spindle and, on the other hand, by an annular shoulder member which surrounds the percussion drill spindle and which is formed in the chuck body. The collar and the shoulder member have opposing surfaces which provide large contact areas during impact or operational strokes.

Abstract: A shearing apparatus for performing several modes of operation on travelling or stationary material. Two cooperative knife drums, which can be rendered rotatable or non-rotatable, form a gap whose spacing is varied by hydraulic piston cylinder assemblies, one mounted on opposed ends of the upper or bottom drum. The adjustable knife drum is held in a parallel or non-parallel positioning or caused to rock with or without additional high frequency oscillations by controlling and regulating the pressure in the cylinders, while simultaneously moving the upper drum towards the lower drum and/or rotating both drums.

Abstract: The fiber cutting device of the present invention comprises a die block having a feed opening extending therethrough for receiving a multi-strand fiber. The die block has a flat cutting surface at one end of the feed opening. A fiber feeder is adapted to feed the fiber through the feed opening toward the cutting surface. A rotatable cutting blade is mounted to rotate about an axis approximately parallel to the longitudinal axis of the feed opening, and the blade has a cutting edge adapted to pass in sliding frictional engagement with the cutting surface of the die block once during each revolution of the cutting blade so as to cooperate with the cutting surface to cut the fiber exiting from the feed opening. Adjustable controls are provided for adjusting the speed at which the feeder feeds the fiber through the feed opening, and additional adjustable controls are provided for adjusting the rotational speed of the cutting blade.

Abstract: A router with a revolving spindle having a cutter on the end has a housing supported by a face plate. The face plate is coupled to the housing via a pair of articulated joints, which may be adjusted to a selected one of many possible angles relating the supporting plane of the face plate with the axis of the spindle. The face plate contains a relatively large hole through which the spindle projects with said cutter being positioned beyond the supporting plane, so that the cutter may be seen during normal operation. A protractor scale is engraved on at least one of the articulated joint parts to identify a cutting angle. In another embodiment, a plurality of click stops are provided on one of the articulated joint parts for accurately setting a selected one of several angles to which the joint may be moved.

Abstract: A self-sharpening hole punch for plastic bags includes a pneumatically operated punching apparatus for punching wicket pin receiving holes in a flexible film or plastic bag. If desired, a tear slit may be simultaneously formed to enable the bag to be quickly and readily torn free from the wicket pin upon which the bag is retained. The disclosed embodiment utilizes a pneumatic air cylinder having a free end of the cylinder rod having a fitting secured thereto having an internal tapered bore. Interchangeable plastic cutting tools, having a complementary tapered thread, may be interchangeably threaded into the fitting to facilitate replacement as necessary.

Abstract: A flexographic printing plate (80) having register marks (82) thereon is supported on the surface (16) of a support table (15) which is capable of being rotated about a central vertical axis. The register marks are viewed by an optical viewer television camera (84) and displayed on a video screen (28) on which are also projected sight marks (86, 87). The operator adjusts the rotational position of the table until the register marks on the plate align with the sight marks. The plate is then punched using a punch unit (24) to form a series of holes (89) in the plate (80) which defines a line either parallel or perpendicular to the axis of the images (81) on the plate. The punched plate is then laid on the top surface of a mounting table (91) of a mounting unit (90) and pins (93) are inserted through the holes in the plate into holes (92) in the table surface.

Abstract: Two pairs of opposed feed rolls are rotatably mounted on the upstream and downstream sides, respectively, of a bar cutting mechanism with respect to the predetermined traveling direction of the bar. Each feed roll pair comprises a fixed feed roll on one side of the bar and a movable feed roll on the other side, with the movable feed roll being movable toward and away from the fixed feed roll. A drive mechanism constantly rotates each pair of opposed feed rolls, so that the bar is fed only when being pressed against the fixed feed roll by the movable feed roll. The feed roll pair on the downstream side of the cutting mechanism is further jointly movable laterally of the path of the bar against the force of a spring for lessening the load exerted thereon, and for preventing the bending of the bar, when the bar is being cut by the cutting mechanism.

Abstract: When drilling deep boreholes with a down-the-hole drill (15), the pressure and the flow of the motive fluid are controlled so that the impact velocity of the piston hammer of the drill is kept within narrow limits independently of the counter pressure in the borehole. For this purpose the quotient of pressure and flow can be held substantially constant.

Abstract: Structural improvement of electric screwdriver with respect to the torsion adjustment thereof, incorporating a torsion mechanism having outer threads in the anterior shell in coordination with a hollow-set torsion adjustment lid having correspondingly provided inner threads, so that manually imposed rotative feeding of the adjustment lid may force the supporting stem to exert depression on the depression spring through the adjustment disk, resulting in vertical engagement of both the upper and the lower ratchet, also in mortise joint of the torsion stem with the lower ratchet; that activation of a finely-touched switch starts the motor to acquire an increased torque by virtue of the main gear in relation to the vernier gear, eventually setting the torsion stem to rotation while locking the screw or else releasing the same, the torsion adjustment lid permissive of multiple-shifted helic adjustments with precision and convenience. The motor being smooth in running, thereby shortens time and labor in work.

Abstract: The invention relates to a device for selectively notching or severing a paper strip (18), e.g. a cashier's bill, in a printer. The cutter (2) is pushed to and fro by means of a sliding block (38) arranged on it by way of a pivot, which block engages in a slide track (28). The sliding block (38) can assume two different angular positions in the slide track (28), in which the pivot (36) connecting the slide block (38) with the cutter (2) is located either radially inside or outside of the center line of the slide track (28), so that the cutter (2) reaches different end positions, in one of which the paper strip (18) is notched and in the other of which it is severed. The setting of the different angular positions of the sliding block (38) takes placed automatically through a choice of the rotation direction of the crank disk (26) showing the slide track (28).

Abstract: Cartridges each containing a different punch, stripper and die are moved automatically by a robot-like transfer mechanism between a punch press and a tool rack for storing several of the cartridges. The transfer mechanism includes two hook-like hands each having notched, cartridge-carrying jaws which may be opened and closed relative to the cartridge, which captivate the cartridge laterally but which allow the cartridge to float vertically. As a result of the vertical floating permitted by the hook-like hands, the transfer mechanism may be programmed in the relatively simple manner of a computer-controlled machine tool and does not require the complex programming of a true robot.

Abstract: A tear-open strip is severed from a band of material having a width equal to the desired length of the tear-open strip by cooperation between a stationary knife-edge defining member and a pivotal knife-edge defining member. The knife edges form chords of a hyperboloid of revolution and are inclined relative to one another. The pivotal knive-edge defining member is provided with suction ports adjacent to the cutting edge whereby a severed strip may be transported by the knife to an intermittently moving sheet of packaging material to which the strip is subsequently bonded.