Abstract: A hold down system for use with a generally planar printed circuit (PC) board includes at least one clamp which engages the circuit board and securely maintains it flat upon a circuit board transport mechanism to facilitate the insertion of electronic components upon the board by automatic positioning and insertion apparatus. The movable hold down clamp includes an elongated, generally vertically oriented housing which is positioned beneath the PC board and transport mechanism and is displaced upward above the PC board for engaging the board and pulling it downward upon the transport mechanism as the PC boards are displaced therealong.

Abstract: A power operated clamp includes a cylinder having a reciprocal piston rod. A hollow body is aligned with and connected to the cylinder and mounted upon a support. The body includes a pair of spaced side plates at their one ends secured to the cylinder. The piston rod extends into the body. A clamp arm is pivotally mounted upon the body and in one position is adapted to retainingly engage a workpiece relative to a workpiece support. A linkage is pivotally connected to the clamp arm; the improvement which comprises a series of vertically spaced pairs of longitudinally spaced transverse mount holes extending through the side plates. The mounting of the body includes an upright riser extending between the side plates and has a series of longitudinal similarly spaced apertures corresponding to some of the side plate apertures. Pivot bolts extend through some of the side plate apertures and riser, whereby the body may be mounted in one of a plurality of longitudinal locations relative to the riser.

Abstract: Cable clamp with jaws and a wedge.The invention deals with a cable clamp having clamping jaws, a clamping wedge and locking means.

Abstract: A power operated clamp includes a cylinder having a reciprocal piston rod. A hollow body is aligned with and connected to the cylinder and mounted upon a support. The body includes a pair of spaced side plates at their one ends secured to the cylinder. The piston rod extends into the body. A clamp arm is pivotally mounted upon the body and in one position is adapted to retainingly engage a workpiece relative to a workpiece support. A linkage is pivotally connected to the clamp arm; the improvement which comprises a series of vertically spaced pairs of longitudinally spaced transverse mount holes extending through the side plates. The mounting of the body includes an upright riser extending between the side plates and has a series of longitudinal similarly spaced apertures corresponding to some of the side plate apertures. Pivot bolts extend through some of the side plate apertures and riser, whereby the body may be mounted in one of a plurality of longitudinal locations relative to the riser.

Abstract: A clamping assembly is operated by a piston and cylinder assembly rotatably mounted on a support. A mounting bracket rotatably mounted on the support is provided with a pair of pivotally mounted plates each having a clamping arm and a cam track. The mounting bracket includes an annular shoulder engaging the support; a flange draws the shoulder against the support, thereby selectively locking the bracket and the piston and cylinder against rotation in any of a plurality of rotational positions. A drive rod connected to the piston extends through the support and into an elongate slot in the bracket. A pair of rollers secured to the outer end of the rod are disposed in the cam slots and drive the plates to pivot. The cam slots are specially configured to lock the clamp in a locking position in the event that fluid pressure is lost in the piston.

Abstract: A machine tool table is disclosed having a lock accessible at the front of the table for applying pressure through a connection to a rear board so that a fence and at least one table spacer are held in position between the rear board and the front table. The lock may be adjusted at the front table to release the pressure so that the position of the fence may be changed.

Abstract: A gripper arrangement for a lifting or hoisting apparatus serves to transport workpieces having a journal or plug-like end. This gripper arrangement or gripper contains a housing in which two slides are essentially symmetrically arranged and radially displaceably guided with respect to a primary or main axis. At each of the slides there is supported a respective clamping or chucking jaw by means of a related guide device which is connected with the related clamping jaw by means of a radial inner hinge joint and with the related slide by means of a radial outer hinge joint which is arranged further towards the outside in axial direction than the radial inner hinge joint. Within the housing there is rotatably mounted a control body member which is operatively coupled with a drive motor. At the control body member there are formed control cams which, during rotation of the control body member, displace the slides.

Abstract: A wafer gripping device including a mechanism for automatically gripping a wafer by claws for transporting a wafer between an auxiliary vacuum chamber and a vacuum chamber of a semiconductor etching device. The claws for gripping a wafer have a vertical stroke increased when a wafer gripping operation is performed to enable the wafer to be gripped without any damage being caused thereto. The wafer gripping device includes a dust collection preventing member for minimizing dust collection.

Abstract: A power actuated workpiece clamp includes a clamping arm actuated by linear movement of a powered actuator member via a compound linkage. The linkage is such that the arm is maintained in the clamping position by a linkage geometer wherein three pivots of the compound linkage lie in a common plane aligned with the line of action of the force urging the clamp arm to its open position.

Abstract: A holding device used in a drawing-in device for inserting winding coils into a stator core of an electrical machine from a transfer tool carrying the winding coils. The holding device includes a stationary cam plate defining therein a cam groove and a pusher block supporting a holding down-plate, which pusher block bears guide rollers cooperating with the cam groove so that the holding-down plate is guided to the stator core disposed on the transfer tool and then applies a force in the direction of the stator core axis about which an associated rotor of electrical machine is rotated.

Abstract: There is provided herein a method and associated apparatus for processing groups of elongated cylindrical members such as tubing or the like. The cylindrical members are arranged and transversely clamped in a substantially flat array by a reciprocating clamp which operates to advance the array of cylindrical members a predetermined distance toward operation performing apparatus whereupon a second clamp engages the members and maintains them in the generally flat array while an operation is performed upon each of the members. Additional apparatus is provided which receives the cylindrical members longitudinally from the operation performing means and delivers the array transversely to other apparatus. Hold down apparatus are also provided on this additional apparatus as well as on the operation performing device and reciprocating clamp device which are designed for rapid accurate adjustment to accommodate different diameter cylindrical members.

Abstract: Clamping apparatus for quickly and accurately positioning and maintaining a pair of workpieces, such as mitered end picture frame moldings or the like, in desired, generally end-to-end, angularly related positions and being characterized by evenly and resiliently applying clamping forces and positioning forces to the pair of workpieces regardless of slight variations in width of the workpieces, as follows. Backstops receive the outer longitudinal side edges of each of the workpieces and are mounted in angularly related positions corresponding to the desired positions of the workpieces.

Abstract: The actuating unit mounts a workpiece gripping and transporting jaw assembly and has an elongated hanger rod supporting a first mount boss. A pneumatic cylinder is arranged below the rod and secured to the boss and has a conventional piston and piston rod projecting from the cylinder. The improvement which comprises an elongated guide rod between the cylinder and hanger rod slidably positioned through the mount boss projecting forwardly thereof and at one end supporting a jaw mount assembly having a longitudinal bore. A stroke adjuster collar is secured upon the other end of the guide rod and adapted to limit forward movement of the jaw mount assembly. A rod adapter is movably positioned through the bore of the jaw mount assembly which includes a first mount flange on the forward end thereof. A jaw assembly includes a body having an annular mounting flange at one end mounted upon the first mount flange and adjustably secured thereto.