Abstract: An electric actuator includes a shaft member, a nut member, a power transmission member, and a guide portion. A spiral groove is formed on an outer circumference of the shaft member. The nut member is fitted onto the shaft member. A power transmission member is disposed between an inner circumference of the nut member and the groove. The guide portion is configured to guide linear motion of the shaft member. Rotation of the nut member about the shaft member by means of a rotational driving force of an electric motor results in the linear motion of the shaft member. The guide portion includes a rotating mechanism portion configured to rotate the shaft member about an axis when the shaft member is in the linear motion.

Abstract: The invention relates to an advancing apparatus for the intermittent supply of a semi-finished material (22) in the form of a band to a press. The apparatus comprises a pair of displacement grippers (4, 7) which run forwards and backwards and by which the material (22) is advanced in an advancing phase, a stationary pair of clamping grippers (24, 27) by which the material (22) is held in a fixed manner in a non-advancing phase, and a control rocker (12) with a control drive (40, 42) which is coupled to one control end of the latter and to which the pair of displacement grippers (4, 7) and the pair of clamping grippers (24, 27) are coupled mechanically and their interaction is controlled.

Abstract: The invention relates to an advancing apparatus for the intermittent supply of a semi-finished material (22) in the form of a band to a press. The apparatus comprises a pair of displacement grippers (4, 7) which run forwards and backwards and by which the material (22) is advanced in an advancing phase, a stationary pair of clamping grippers (24, 27) by which the material (22) is held in a fixed manner in a non-advancing phase, and a control rocker (12) with a control drive (40, 42) which is coupled to one control end of the latter and to which the pair of displacement grippers (4, 7) and the pair of clamping grippers (24, 27) are coupled mechanically and their interaction is controlled.

Abstract: A firearm rest for a firearm having a butt stock. The gun rest includes a base that may be slipped onto a belt and further includes an elastic line depending from the base. The elastic line forms a loop. The butt stock is placed into the loop and on the end of the loop opposite of the base. The elastic line is selected relative to the weight of the firearm to be carried such that the elastic line gives or stretches preferably only when the user is walking. With such a selection, the line absorbs the shock generated by the firearm instead of transmitting the shock into the body of the user such as into the back of the user. The size of the loop may be adjusted by tying knots at various points in the line. The base from which the shock or elastic line extends may be an apertured leather base, a base with a tapered slot for pinching a portion of the line to adjust the size of the loop, or a belt from which an elastic strap may depend.

Abstract: A handling apparatus for forging machines, especially for advancing a wire intended for the manufacture of screws, rivets and the like includes a first cam, keyed on a first motor-driven rotary shaft, cooperating with a first angularly orientable lever, associated with a roller and formed by a branch having a rectilinear portion, oriented parallel with respect to a screw, guided by a support and caused to rotate alternatively clockwise and counter-clockwise either by an electric motor or by hand; a sliding carriage, associated with the screw, provided with a transversal tying pin for an oscillating bar having on its free end a needle that strikes the rectilinear portion of the first lever; a second angularly orientable lever, cooperating with a carriage that is movable in a direction parallel to the direction of advance of the wire; wire grasping means for grasping the wire; a second cam, alternatively mounted on a second shaft or a rotary side shaft of the forging machine, which cooperates with a needle fixe

Abstract: A first clamping member allocated to the feeding of the web co-operates with a second clamping member allocated to the feeding of the web in order to clamp the web for a feeding thereof. The first clamping member is controlled by a cam disk via lever arm members. A first arresting member co-operates with a second arresting member in order to clamp the web for an arresting thereof. The first arresting member is controlled from the same cam disk via lever control members.

Abstract: A material feeding apparatus has gripper apparatuses which perform clamping and unclamping operations of a material by means of a stationary gripper and a movable gripper, and a sliding block which can support the first gripper apparatus and oscillate in a transfer direction of the material. These members are respectively driven by first, second and third cams which are fixed to an input shaft. In order to closely attach transfer members interposed between the first cam performing a forwarding operation of the material and the sliding block to each other, a spring which always urges the sliding block in a returning direction is provided. Accordingly, it is possible to remove a play between the transfer members and perform a feeding operation at a high speed and a high accuracy. Therefore, it is possible to obtain a material feeding apparatus which can transfer and supply the material at a high speed and a high accuracy.

Abstract: A device for moving wire on machine tools, especially applicable to forging machines employed for the production of bolts and screws, including a carriage (28) having an alternating axial motion for dragging wire to which a first mechanism (30) is associated for blocking said wire during the forwards motion of the carriage (28) and a second mechanism (52) for blocking and keeping said wire in place during the backwards movement of said carriage

Abstract: A gripper feeder for metal strip including on a base one pair of grippers for an engagement of a metal strip to be advanced; members for moving said grippers in a direction parallel to an axis of the strip and in the opposite direction; and means for independently operating the grippers such that the gripper which moves in the direction of advancement of the strip is activated, whereas that which moves in an opposite direction is deactivated.

Abstract: An automatic parts feeding apparatus of the invention is used to transfer a carrier tape for carrying parts thereon. The carrier tape has feed perforations formed in a predetermined pitch. The feeding apparatus is formed of a driving shaft rotated in one direction, a cam member fixed to the driving shaft and having a cam surface, a moving member abutting against the cam surface of the cam member, and a feed member attached to the moving member. The moving member is elevated, advanced, lowered and retreated through rotation of the cam member. The feed member engages at least one feed perforation of the carrier tape when the moving member is elevated by the first cam member, and it advances the carrier tape when the moving member is advanced. The feed member disengages from the feed perforation when the moving member is lowered. The carrier tape is moved by repeating the movements of the feed member.

Abstract: An apparatus for clamping an individual thread out of a plurality of threads, which are guided in side-by-side relationship, includes a transport unit with a drivable transport shaft and a rotatable contact pressure shaft. A thread is guided between the shafts. A clamping unit with an abutment and a clamping pin acting thereagainst is used for clamping a respective thread. Between the clamping pin and one of the functional parts of the transport unit, there is an operative connection. Increasing the clamping of a thread in the clamping unit causes an increasing release of the thread in the transport unit and vice-versa. The operative connection can adopt a central position in which the thread is loose both in the transport unit and in the clamping unit.

Abstract: A material feeding apparatus intermittently feeds a material having a relatively large width at high speed with high accuracy, whereby adjustment of the apparatus and the die maintenance can be readily performed, and the material will not be easily damaged. The material feeding apparatus includes a pair of gripper feeds which are provided on both the right and left sides of a press machine and actuated synchronously.

Abstract: An automatic motorless label applying system includes a supply reel having a continuous carrier strip with a plurality of labels detachably mounted thereon. The strip is directed through an air actuated linear indexing mechanism which includes an upstream solenoid and a downstream solenoid. The upstream solenoid has clamp members which clamp the strip and then move it in a down-stream direction by the upstream solenoid itself moving laterally. The downstream solenoid clamps the strip when the upstream solenoid returns towards its original position. The labels are sequentially detached from the strip and each label is applied to a respective container.

Abstract: In a tape feeding apparatus used in bonding machines for semiconductor devices, both upper and lower tape clampers are driven upward and downward. Thus, during the tape feeding operation, the upper clamper and the lower clamper can be both withdrawn from a tape feeding path so that neither the upper surface nor the under surface of the tape contact the upper clamper nor the lower clamper. No scratches, etc. would occur in the tape. In addition, the bonding level of the tape is determined by the upper surface of the lower clamper during the tape clamping operation, thus securing high bonding precision.

Abstract: Pivot arms which carry the pressing bar are hingedly mounted to the rocker. At their opposite ends these pivot arms are hingedly mounted such to the frame that in one position the axis of rotation of the lower feeding roller coincides with the pivotal axis of the pivotal point at which the pivot arms are hingedly mounted to the frame. The pressing bar is thereby hingedly mounted via a link connection to a pivot point at the frame that a parallelogram of movements is provided, based on which the pressing bar is moved exactly perpendicularly against the workpiece to be arrestingly pressed.

Abstract: A hitch feeder for a TAB tape is described which comprises: a stationary jas assembly having opposing jaws for gripping edges of the tape when closed, and not gripping the edges when open; a movable gripping assembly which includes a lower movable gripper positioned below the tape and an upper movable gripper positioned above the tape. The lower and upper movable grippers may be moved both towards and away from the tape, each said movable gripper gripping the tape when moved towards it and releasing the tape when moved away from it. Both grippers are physically clear of any features on the tape when moved away from it. A tape feeder is provided for reciprocally moving the movable gripper assembly along the tape length, both towards and away from the stationary jaw assembly.

Abstract: A roll feed apparatus in which a plate material is held in a pair of rolls and fed intermittently, in a predetermined length at a time, by the oscillated operation of the rolls, the distance between the rolls is adjusted by a material thickness adjusting mechanism, the power of the rolls for holding the material is adjusted by a holding power adjusting mechanism, and the length of each feed of the material is adjusted by a feed length adjusting mechanism. The material thickness adjusting mechanism, the holding power adjusting mechanism and the feed length adjusting mechanism are automatically numerically controlled by an electrical control system without direct manual operation.

Abstract: A pair of rollers receives the stock between them and are movable laterally in unison to advance the stock gripped between them in a feeding movement. A slide block is slidably carried by a disk and is provided with a coupling that is offset from the axis of the disk. The coupling is connected to the pair of rollers so that rotation of the disk will move them in their lateral movement. The length of the feeding movement is adjusted by moving the slide block relative to the disk to adjust the distance between the coupling and the axis of the disk. The slide block is provided with a measuring surface that is located so that the distance from the measuring surface to the reference surface corresponds to one-half the length of the feeding movement. The slide block is clamped in position by a locking plate that is slidably supported by the disk.

Abstract: A roll feed apparatus for intermittently feeding a strip by a constant length into manufacturing machines. A pair of first and second rolls and a pair of first and second brake shoes are arranged along a strip transporting path. The rolls move swingingly in a strip transporting direction to transport the strip clamped between the rolls. The rolls move away from each other when they swingingly move in a direction opposite to the strip transporting direction. First and second cams are mounted respectively on outer and inner shaft members of a drive shaft for rotation therewith. The inner shaft member can be adjusted in its angular position relative to the outer shaft member. The cams are operatively connected to the second brake shoe.

Abstract: An arrangement for the stepwise feed of band material which includes a first, locally fixed and driven feed roller and a second feed roller rotatably supported on a rocker; a lifting mechanism is provided, by which the second feed roller is movable at the point in time of the reversal of the direction of rotatin toward the first feed roller for an advance of the band material and away from the same into a return position in which the band material is to be held fixed. The feed arrangement is designed for an intermediate clearing of the second feed roller and of the guide member by abutment of the guide element on a height-adjustable eccentric and for different thick band materials. In the points of reversal of to and fro movements, the second feed roller as also the pressure device are briefly pressed against the band material.

Abstract: A roll feed apparatus for intermittently feeding a strip by a constant length into manufacturing machines. A pair of first and second rolls and a pair of first and second brake shoes are arranged along a strip transporting path. The rolls move swingingly in a strip transporting direction to transport the strip clamped between the rolls. The rolls move away from each other when they swingingly move in a direction opposite to the strip transporting direction. First and second cams are mounted respectively on outer and inner shaft members of a drive shaft for rotation therewith. The inner shaft member can be adjusted in its angular position relative to the outer shaft member. The cams are operatively connected to the second brake shoe.

Abstract: An improved sheet forming machine and method of making same are provided wherein such machine employs a first set of clamp assemblies and associated moving devices for serially moving the sheet or sheet material along fixed parallel rails through a succession of working stations and a second set of clamp assemblies which cooperate with the first set of clamp assemblies in a non-interfering manner and grasp and hold opposite side edge portions of the sheet material the full extent of the stations along the rails, and the second set of clamp assemblies are adapted to provide precise grasping and holding of such opposite side edge portions of the sheet material along such full extent to enable modification of the sheet material at each successive station with optimum precision. The machine also has improved apparatus for adjusting and holding the distance between the parallel rails.

Abstract: A chuck secures a rigid coaxial cable to a reference machine plane. A rotatable pressure die automatically engages and bends the cable relative to both a bend die, which is rotatable about a fixed axis, and a fixed support die. The support die absorbs the brunt of the bend forces created by the pressure die and supports the cable as it is displaced by the machine carriage between bending operations. A cable clamp automatically selectively holds the cable and is lowered out of the way of the chuck to permit bending of the cable close to the chuck. The clamp jaws, pressure die, and chuck are adjustable to preclude damage to the cable.

Abstract: A roll feed apparatus for intermittently feeding a sheet-like blank material to successive work stations has a pair of sector rolls adapted to be driven by an oscillation driving device in synchronism with each other such as to clamp the material therebetween and feed the same intermittently in one direction, by virtue of a driving connection device which drivingly connects the rolls to the oscillation driving device. The apparatus further has a roll release device adapted to move the rolls away from each other when the rolls are oscillated in the directions counter to the feeding directions thereby releasing the sheet-like blank material from the clamping force.

Abstract: This invention relates to a gripping feeder for an intermittent feeding of strip or wire stock in presses, stamping machines or similar machines. It is an object of the invention to provide such gripping feeder which permits a change of the stroke length to be effected from the outside while the machine is in operation and permits such change to be effected manually or by means of an adjusting motor and also permits an automatic adaptation of the feeding and retaining grippers to the thickness of the strip or wire stock to be fed. This is accomplished in that the carriage carrying the feeding gripper is adapted to be driven from the main drive of the machine via a feed rocker, which extends transversely to the direction of travel of the carriage and is fulcrumed on a slider, which is slidable along a rail that extends transversely to the direction of travel of the carriage so that an adjustment of the slider along said rail will result in a change of the stroke length of the carriage.

Abstract: A brake device which is used to prevent reverse movement of a belt run and which includes a wedge member which is pivotally supported above the belt run. Upon reverse movement of the belt run, the wedge member is drawn into pinching contact with the belt.

Abstract: Apparatus for incremental feeding of soft metal, foil, paper or plastic strip into a machine. The apparatus employs a pair of gripping means which cooperate to advance the strip incrementally without marring or otherwise defacing the soft surface. The first gripping means reciprocates back and forth to advance the strip. The second gripping means is stationary and retains the advanced strip to prevent its retreat when the first gripping means returns for the next stroke.

Abstract: The feeding mechanism serves to intermittently feed stock to a processing machine and comprises a rocker lever having at its outer end an arcuate surface shaped according to an arc of a circle, crank drive comprising a crank which is operatively connected to said rocker lever, said crank drive being operable to impart an oscillation to said rocker lever, a clamping roller adapted to cooperate with said arcuate surface and forming a feeding clamp therewith, a retaining clamp for holding said stock in position, and control means for cyclically opening and closing said feeding clamp and retaining clamp in alternation.

Abstract: A device for stepwise pulling in with great force and stowing a belt or strap, comprising a stepwise feeding mechanism which pulls in the strap through a locking means allowing passage of the strap towards the mechanism but locking the movement of the strap in the opposite direction, and a storage or winding-in device for collecting the fed-in strap. The step feeding mechanism comprises two elements, which are pivotable about a common axis, together as well as relatively to each other. The strap passes between the elements which co-act with each other and with the strap so that when they are swung together in one direction they grip and coil the strap while simultaneously pulling in the strap. When the elements are swung back in the opposite direction they move somewhat relatively to each other, thereby releasing the strap.

Abstract: High speed wire feeding means comprises a wire feed roll and a pressure roll, the wire feed roll being driven by a printed circuit motor under the influence of control means which maintains a high and constant level of acceleration and deceleration at the beginning and end of the feeding cycle. One embodiment has a single driven feed roll and a plurality of side-by-side pressure rolls for feeding a plurality of wires. This apparatus is capable of producing a bundle of wires having varying lengths in a minimum amount of time.