Abstract: A main roll and a sub-roll of a sheet material feeding apparatus interpose therebetween a sheet material to intermittently feed the same to a press apparatus. A roll clearance is adjusted according to a sheet thickness by displacing the main roll up and down. A release device that temporarily releases a sheet material having been interposed by the both rolls just before the sheet material is subjected to press working by the press apparatus includes a sub-roll guide that can move up and down together with the sub-roll, a rectilinear cam, and cam followers for engagement with a cam surface of the rectilinear cam, and the release device moves the rectilinear cam axially of the sub-roll in synchronism with the operation of the press apparatus to thereby displace the sub-roll up and down through the cam followers and the sub-roll guide.

Abstract: A rotary cutting apparatus includes a cutter drum having at least one cutting member and an anvil drum having a rotary axis, arranged in a cutting relationship to one another, and a pressure actuating device for subjecting pressure on said cutting member in relation to the anvil drum. The pressure actuating device includes a pair of levers rotatable about at least one hinge having a horizontal axis. The horizontal axis is parallel to but non-concentric with the rotary axis. In addition, a frame supports the cutter drum and the anvil drum in a rotatable relationship. The pair of levers are releasably connected to the bearing housing, respectively, in such a way that the anvil drum is allowed to be removed from the frame.

Abstract: A method and an apparatus are for applying a rotationally driven pressure roller (4) onto a rotationally driven goods guiding roller (3) in stretching equipment for thermoplastic films. The pressure roller (4) is advanced in the direction of the goods guiding roller (3) by at least one first pressurizable piston-cylinder unit (7) in such a manner so that after the advancement an axis-parallel remaining stroke exists between the pressure roller (4) and the goods guiding roller (3). Then at least one second pressurizable piston-cylinder unit (8) operatively connected with the first piston-cylinder unit (7) carries out the remaining stroke, while maintaining the axis-parallelism, until a touching contact exists between the pressure roller (4) and the goods guiding roller (3). Then the pressure roller (4) becomes effective with a nominal pressing force onto the goods guiding roller (3).

Abstract: A system and method for cutting continuous web that provides a simplified and direct feed path during loading, and thereafter a more-complex serpentine feed path at an infeed unit for reliable infeed of the web, arranged as either a free loop or a moderately tensioned configuration. Downstream, an indexing drive intermittently pauses the web for the cutter knife to operate. The indexing drive and infeed unit's drive are synchronized by a controller to produce a small horizontally disposed buffer loop therebetween. The buffer loop is maintained within a predetermined range using a sensor, operatively with the controller, that measures the location of the end of the loop, modulating the drives to maintain the buffer loop's (returning) end within a predetermined location about the sensor's sensing field. The system includes an adjustment drive motor for moving a plurality of edge guide sets toward and away from each other in synchronization.

Abstract: A feed apparatus for intermittently feeding band-shaped material to a press has two feed rollers for advancing the material. An upper feed roller is bearing-mounted in a rocker for swivel-movement with a pivot bearing on a unidirectionally hydraulic cylinder into a high-lifted position enabling introduction of the material between the rollers. For lowering of the upper roller, the cylinder is rendered pressureless and a press spring pressed onto the material between the rollers. In this position, the pivot bearing can be fixed for automatically adjusting the feed apparatus to the thickness of the material.

Abstract: The elongate rocker is forked at its first end and includes two fork tines. These are designed symmetrically relative to the longitudinal plane of symmetry of the rocker. A control rod with a longitudinal center axis is pivotally mounted at its bottom end to the second end of the rocker. A spiral pressing spring with a longitudinal center axis acts onto the rocker. The upper feeding roller is designed symmetrically to a plane extending perpendicularly relative to its longitudinal center axis. The longitudinal center axis of the control rod defines together with the longitudinal center axis of the pressing spring a geometrical plane. This plane coincides with the longitudinal plane of symmetry of the rocker, which in turn coincides with the geometrical plane which extends perpendicularly to the longitudinal center axis.

Abstract: True zero-clearance cutting on a commercial scale is provided via a cutting area including a sacrifice material that is relatively softer than the cutter. One example is a cutting system which is capable of cutting a material such as, for example, tape or paper, into a fiber or powder. The cutting system includes a cutting blade, typically a rotary cutter, and a sacrificial plate or round bar contacting the cutting blade. The contacting portion has a zero clearance during the cutting operation. A metering mechanism is also provided which is capable of metering the material at a predetermined rate to the cutting blade. A mechanism is also provided for incrementally moving the sacrificial blade towards the cutting blade to ensure that the zero clearance is maintained between the cutting blade and the sacrificial plate, even when the sacrificial plate begins to wear down due to usage.

Abstract: An image recording apparatus in which a photosensitive material is rewound into a magazine while maintaining a predetermined disposition. Prior to rewinding of the photosensitive material, a distance between concave portions of guide members which constitute a guide portion is set to be substantially equal to the photosensitive material width and a nipping state between a pair of pulling-out rollers is cancelled. Because the nipping state is cancelled, the photosensitive material can be displaced in a width direction. Therefore, the photosensitive material can be rewound into the magazine while maintaining the predetermined disposition, and any skew is corrected by the concave portions of the guide members.

Abstract: An adjusting nut is arranged on a threaded spindle and supports a first double arm lever unit with a first and a second arm. A second double arm lever unit is pivotally mounted at its first arm through a connecting strip to the second arm of the first double arm unit. The second arm of the second double arm unit is pivotally mounted through a control rod unit to a rocker. This rocker supports upper feeding roller which co-operates with a lower feeding roller for a feeding of a strip shaped blank. The first arm of the first double arm unit supports a bolt which projects into an elongate hole of an eccentrically supported rod.

Abstract: Two intermittently and oscillating driven feeding rollers (2; 3) are adapted to feed a strip-shaped workpiece (63). The bottom feeding roller (2) is supported in the frame (1) of the feeding device. The upper feeding roller (3) is supported in a rocker (30). The movement of the rocker (30) is controlled by a control disk (64) through a lever and a rod arrangement (40). The rocker (30) rests at one end (33) via a pressure spring (39) against the frame (1). At the opposite end (34) the rocker (30) rest against the frame (1) via a further pressure spring (36). The rocker (30) is supported in an overhung state on a cantilever which consists of a sleeve (70), a arm (71) projecting laterally from the sleeve (70) and a shaft (72) held clamped in the arm (71). The clamping bar (46) is firmly mounted to the shaft (72).

Abstract: The inner end of a snake or drain cleaning cable coiled in a rotatable cable storage drum of drain cleaning apparatus is provided with a torque arm which frictionally engages the outer wall of the drum to restrain sliding of the cable relative thereto during a drain cleaning operation. The drain cleaning apparatus is motor driven, and a cable feed device for axially displacing the cable relative to the storage drum is provided on the outer end of a flexible guide tube detachably mounted on the apparatus to facilitate an operator guiding the outer end of the cable into a drain to be cleaned and advancing or retracting the cable relative to the apparatus without having to physically contact the cable.

Abstract: An apparatus for intermittently feeding a workpiece to a press, the device including a feed roll with a pinch roll opposite the feed roll, so that a workpiece may pass between the rolls. A servo screw, pinch roll actuator is connected to the pinch roll so that during apparatus operation, changes in pinch roll pressure may be developed between the pinch roll and the workpiece without causing loss of contact between the pinch roll and the workpiece. A new belt drive system and method of pinch roll control is also disclosed.

Abstract: A weft feeding device which alleviates an excessive tension acting on the weft upon feeding of the weft and inhibits breakage of the weft includes a gripper to grip the weft at prescribed times, a length measuring roller located downstream of the gripper, and a pinch roller to hold the weft against the roller at prescribed times. Opening and closing of the gripper is linked with movement of the pinch roller into and out of contact with the length measuring roller. A linear or a rotary solenoid is provided to operate the pinch roller and the gripper by a pulse width modulation method or a linear method.

Abstract: A press feed capable of being driven in synchronization with a press. The press feed includes a sensor for sensing a selected phase of a press cycle of the press, structure for engaging stock material adapted to be fed by the press feed to the press, and an infinitely variable release device connected to the stock material engaging structure and communicating with the sensor. The infinitely variable release device operates to move the stock material engaging structure in a first direction relative to the stock material responsive to detection by the sensor at the onset of the selected press cycle phase, and to move the stock material engaging structure in a direction generally opposite the first direction responsive to detection by the sensor at the termination of the selected press cycle phase. The infinitely variable release device may be a servo controlled drive screw.

Abstract: A bar stock supporting and feeding apparatus which includes first and second series of bar stock support members centered about a longitudinal axis and movable with respect to the axis to rotatably engage a length of bar stock. An adjustable stop mechanism is provided to quickly adjust the apparatus to rotatably support bar stock of different diameter. A loading and unloading mechanism is provided which does not require that an operator's hands be placed dangerously close to the apparatus. A bar stock feeding apparatus is provided with a similar gear system for engaging the bar stock and feeding it into an adjacent machine tool. A fail-safe mechanism prevents disengagement of the support apparatus in the event of a loss of fluid pressure in the system.

Abstract: An improved power strapping machine comprising a strapping device and a soft touch package compression device. The strapping device includes plurality of coils for supplying strapping to a guide apparatus. A chute apparatus for routing strapping around an article or package to be strapped is connected to the guide apparatus. The machine includes sensors and a control circuit adapted to operate the machine continuously without the need to stop production, since when one coil is out of strapping or a misfeed occurs, the machine will automatically load another coil of strapping and continue strapping packages. The soft touch package compression device uses pneumatic-drive chain drive systems for moving soft belts up and down. The soft belts compress the package so that the strapping device can place a tight strap around the package.

Abstract: A roll type stock feed apparatus for a power press. The stock feed apparatus has a pneumatic system for actuating the feed rolls between stock feed and stock release positions. Pressurized air in a substantially constant pressure is applied to one side of a pneumatic actuator to press the feed rolls into feeding engagement with strip stock between the rolls, and pressurized air is selectively applied and exhausted from the other side of the actuator piston to respectively release and apply feeding pressure to the stock feed rolls. An adjustable stop is provided to limit movement of the actuator pistons in a stock release direction.

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: The crank assembly of the advancing apparatus is eccentrically supported in an intermediate shaft. This intermediate shaft is in turn supported in an oscillating slide. Accordingly, the oscillating movement of the slide is superimposed over such of the driving pivot of the crank assembly. The intermediate shaft includes a cam disk. Due to the cam disk the intermediate shaft oscillates in operation and causes in turn the oscillating movement of the slide, which oscillating movement proceeds oppositely to the oscillating movement of the driving pivot. The sum of these two movements in the zones of the end positions thereof is accordingly zero. Accordingly, the driving pivot is at rest over a prolonged time span. Due to this prolonged rest period between individual feeding steps, elastical deformations of working structures and of the workpiece being worked upon, can attenuate and fade out prior to the working proper, and at the same time the length of the advancing is not subjected to a change.

Abstract: A pair of arms is hingedly connected to a rocker. These arms support the pressing bar. At their opposite ends the arms are pivotably mounted such to the casing of the appratus that in one position thereof the axis of rotation of the lower feeding roller coincides with the pivot axis of the pivotal point of the arms at the casing. By this design it is no longer necessary to adjust the apparatus for the intermittent feeding of a web-shaped workpiece by utilizing auxiliary structures to various respective thicknesses of the web being fed.

Abstract: The driving gear meshes with the gear on the web of a planetary gear. This planetary gear includes an arrestable sun wheel. The output sun wheel is rigidly connected to the drive shaft. It extends through a sleeve section of the web. A longitudinally displaceable shifting sleeve is located on the sleeve section, which shifting sleeve has a plurality of control disks. These control disks control via a roller the rocking movement of the upper feeding roller. Accordingly, the period of the rocking movement can be selected depending on a respective selected control disk.If the sun wheel is unlocked, the shifting sleeve may be moved such that it engages directly the drive shaft such that by properly selecting the number of teeth, it is possible to choose between a rotational speed transmission relation of 1:2 and 1:1.

Abstract: Strip feed mechanism comprises an intermittently rotated sprocket wheel which engages the strip material. A guide plate extends tangentially past the sprocket wheel and serves to hold the strip material against the wheel and in engagement with the sprocket teeth. At the end of a feeding interval, the guide plate is moved away from the sprocket wheel by a bell crank mechanism. The bell crank mechanism comprises a bell crank having a movable axis which, in combination with other features of the mechanism, permits the guide plate to be moved away abruptly from the sprocket so that the feeding interval is brought to an abrupt halt without "chattering" or other slight uncontrolled movement of the strip.

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 chain feeder for used in a slide fastener finishing machine includes feed roller mounted on a driven shaft driven to rotate in one direction via a clutch and a spring-biased brake lever mounted on the driven shaft via a one-way clutch for exerting a braking force to the driven shaft when the feed roller is rotated in the opposite direction. With this chain feeder thus constructed, the fastener chain is held taut during the time top stops are applied to the fastener chain.

Abstract: A method of feeding a continuous slide fastener chain with successive fly strips in a slide-fastener finishing machine, comprises feeding the slide fastener chain with successive fly strips along a horizontal straight path normally by applying driving force to one tape free of the fly strips, and feeding the slide fastener chain by applying the driving force to both of the opposed tapes while the slide fastener chain is threaded through a slider. An apparatus for carrying out this method comprises a main roller engageable with the lower surfaces of the opposed tapes, and first and second associate rollers engageable with the respective upper surfaces of the opposed tapes and vertically movable independently of each other.

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: An automatic release timing control system for use with a press and a cooperating feeder for feeding a web of sheet material wherein a sheet release timing and a sheet grip timing of a release mechanism in the feeder are corrected in response to the varying revolution of the press and the response time of the release mechanism, so that, even when the working speed of the press is high, the sheet releasing operation and the sheet gripping operation of the release mechanism can follow up the working speed of the press.

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: A drive mechanism for a magnetic tape recorder which uses a single reversible electric motor that drives the magnetic tape in the recorder in the forward direction through a pinch roller-capstan drive assembly, and which automatically disengages the pinch roller from the capstan so that the tape may be rewound at high speed when the motor is reversed.

Abstract: A roll feed apparatus for feeding a sheet material successively to different working stations. The apparatus includes an oscillation driving device, a main sector roll integrally carried by a main roll shaft and adapted to be oscillatorily driven by the oscillation driving device, and a sub-sector roll integrally carried by a sub-roll shaft extending in parallel with the main roll shaft. The sub-sector roll is adapted to cooperate with the main sector roll in clamping a sheet material therebetween and feeding the same.

Abstract: An elongated flexible probe carrier is wound on a take-up reel and is fed therefrom around a feed pulley, being held in frictional engagement with the feed pulley by a plurality of idler rollers on a pivotal support arm. The feed pulley and the take-up reel are both rotatably driven from a single drive motor, respectively through two electromagnetic clutches. The take-up reel clutch is directly coupled to the motor while the feed pulley clutch is coupled to the motor either through a belt and pulley arrangement for rotation in the same direction as the motor or through a gear train for rotation in the opposite direction from the motor. A reversible motor is used with the belt and pulley type coupling. Control means are provided for selectively varying the magnetic coupling forces exerted by the two clutches for control of the feeding and take-up of the carrier without slippage. A position detecting device is coupled to the feed pulley for measuring the movement thereof.

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: An apparatus and method for supplying thin film plastic web materials to a wrapper machine as shown and described. This apparatus includes feed stripper which assures the separation of the web material from the apparatus. The feed stripper includes a clamp feed and either a belt roller for stripping or a stripper bar for stripping the film off. An anti-static bar is used to eliminate static electricity on the web material.

Abstract: A yarn feeding means comprising a yarn detaching guide positioned in the vicinity of a positively rotating roller for feeding a yarn continuously fed from a supply source to a yarn winder and capable of selectively occupying either of two positions, one of which is a retractive position where the detaching guide is non-operative to the yarn path and the other is a projective position where the detaching guide is engageable with the yarn path to detach the yarn from the positively rotating roller. The yarn detaching guide holds the yarn during the threading operation away from the feed roller whereby the yarn can be withdrawn even by a standard capacity suction gun irrespective of a high surface speed of the feed roller. A winder comprising the yarn detaching guide is also provided.

Abstract: An improvement in a strip feeder for feeding a continuous strip of sheet material to a punch press, for example. The feeder includes a drive roller segment and an idler roller. The drive roller segment is driven in oscillating fashion by the punch press through a cam oscillator drive. A lever assembly connects the cam drive with the drive roller segment shaft. The lever assembly includes a lever which pivots about a point adjustable along the length of the lever. This adjustment, which can be made while the feeder is in operation, is effective to vary the oscillating travel of the feed roller segment and, accordingly, the length of strip which is fed.

Abstract: A roll feed apparatus for feeding a sheet material successively to different working stations. The apparatus includes an oscillation driving device, a main sector roll integrally carried by a main roll shaft and adapted to be oscillatorily driven by the oscillation driving device, and a sub-sector roll integrally carried by a sub-roll shaft extending in parallel with the main roll shaft. The sub-sector roll is adapted to cooperate with the main sector roll in clamping a sheet material therebetween and feeding the same.

Abstract: There is disclosed web feeding apparatus and method for feeding a web from a web roll to a utilization device. The paying out of the web from the web roll into a U-shaped buffer loop is assisted by a pair of cooperating feed rolls which engage the web along the buffer loop. When the loop decreases to a certain extent, a sensing member causes the feed rolls to rotate to pay additional web material out of the web roll until the loop has increased to a certain extent. The web material extends from the buffer loop over the web roll and is guided to the utilization device, for example, a printer. The feed rolls can be caused to rotate when a manually engageable lever is moved in one direction. Alternatively the feed rolls can be separated and caused to rotate when the member is moved in the opposite direction. The apparatus also includes a reel assembly having a reel for handling web rolls having a variety of different widths.

Abstract: An input shaft of a press feed is rotated at a preselected speed and is drivingly connected to a cam that rotates the input shaft. Continuous rotation of the cam is converted to oscillating rotational movement of a cam follower through a preselected angle of rotation. The cam follower is nonrotatably connected to an output shaft that is connected by an adjustable drive link and gear arrangement to a driven feed roll. Oscillating rotational movement of the output shaft is transmitted to the driven feed roll to advance the driven feed roll in contact with the strip material through a preselected degree of rotation corresponding to a preselected feed length of the strip material to the press. The end of the drive link adjacent to the output shaft is movable relative to the output shaft.

Abstract: The input shaft of a punch press is rotated at a continuous preselected speed and is drivingly connected by a cam drive mechanism to an output shaft to generate oscillating rotational movement of the output shaft. Upper and lower feed rolls are rotatably supported in a frame in overlying relation to engage stock material extending between the upper and lower rolls. A combination linkage and gear cluster transmits the oscillating rotation movement of the output shaft to one of the feed rolls. The second feed roll is pivotally supported in the frame for movement toward and away from the first feed roll. A coupling drivingly connects the gear cluster to the second feed roll to oscillate the second feed roll through an angle of rotation corresponding to the angle of rotation of the first feed roll and thereby drive both of the feed rolls to intermittently feed a preselected length of the stock material to the press.

Abstract: To cut a strip of metal into exact lengths, rollers are brought into contact with the strip and turned by an accurate motor until a pin can be mechanically inserted into a hole in the strip to effect final alignment. If the pin does not successfully enter the hole, a detector halts the system.

Abstract: A roll feed apparatus comprises a main roll (4) and a subroll (8) adapted to cooperate with the main roll to feed a flat workpiece (7) in a clamped state on a step-by-step basis. The main roll is mounted on an output shaft (2) of an intermittent motion mechanism (3) to be intermittently rotated in one direction. The subroll has a rotation-transmission roll (8a) disposed at one axial end of the subroll and is rigidly mounted on a subroll shaft (6) which is rotatably supported in a roll housing (5a) through an externally rotatable eccentric flange (10), and a workpiece-engaging roll (8b) supported by the rotation-transmission roll and surrounding the subroll shaft. The rotation-transmission roll has a peripheral surface which makes rolling contact with the main roll for transmitting rotation, and is movable toward and away from the main roll to adjust contact pressure between the main roll and the rotation-transmission roll upon rotation of the eccentric flange.

Abstract: In the intermittent forward feeding of a material web provided with transverse crease lines and simultaneous punching of holes into the material web in a definite relation to the crease line pattern, it is important to ensure that any faults in the length of the forward feed, do not accumulate during working over longer periods. Such faults, which occur due to unavoidable inaccuracies would lead successively to ever increasing faultiness in the placing of the holes. A method and an arrangement adapted to avoid the accumulation of such faults are provided.In the method the material web during each forward feeding is advanced a distance which exceeds the correct distance between two transverse lines by the fault margin. Subsequently, before the next forward feeding, the web is restored to a correct position, not affected by any faults in the distance between the crease lines.

Abstract: The invention relates to a hydraulically actuated feed roll lift mechanism for feeds utilized to feed strip stock into a machine, such as a mechanical press. Regulated hydraulic pressure acting against a piston that is connected to one of the feed rolls through a yoke forces the feed roll against the stock to grip the stock and cause an increment thereof to be fed into the press when the rolls are rotated. A roll opening cam, which is connected to the press crankshaft, advances a small piston to displace oil against the other side of the piston while the stock is at rest to thereby separate the rolls during the time that the dies are in contact with the stock in the press. The time at which roll separation is initiated is controlled by adjusting the angular position of the cam on its shaft, as by releasing a frictional lock mechanism, rotating the cam to the desired position, and then again locking it in place.

Abstract: Spool changing apparatus for alternately pulling web-shaped packaging material from two supply spools and feeding the material sequentially to a pair of engraving rollers, a pair of conveying rollers, and a cutting device along a conveying track. An auxiliary device is provided to separate the embossing rollers as a new supply of packaging material is fed therethrough. The material is thus initially conveyed without embossing, thereby avoiding coiling of the new length of packaging material at the outlet side of the embossing rollers.

Abstract: In the apparatus as herein disclosed, the strip material passes between a lower driven roll and an upper idler roll which is mounted on a vertically adjustable bracket member that maintains a square position at all times since it is trapped between the main support members of the housing. When the clamp screws are loosened the bracket will not cock or misalign. The upper idler roll is pivotally mounted on the bracket member for movement to and from the lower driven roll and pressure means in the form of an air bag is associated with the idler roll pivot arm, having a location outwardly beyond the idler roll.

Abstract: Apparatus whereby a filmstrip operator can conveniently reestablish the engagement between a sprocket and an overdriven filmstrip in a filmstrip projector. The projector operator manipulates a thumb wheel to cause a roller to come into contact with a surface portion of the filmstrip, and to cause the roller to rotate thereby causing longitudinal displacement of the filmstrip in a film track. The trailing edge of the filmstrip is displaced towards the sprocket to facilitate reengagement of the filmstrip with the sprocket.

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.

Abstract: This invention relates to an electric impact tool characterized by a pair of electric motor-driven counterrotating flywheels, at least one of which is movable relative to the other from a retracted inoperative position into an extended operative one closely adjacent the other flywheel whereby a ram is squeezed therebetween and impelled forward at high speed against a workpiece. The nosepiece of the tool frame is retractable although normally extended due to the spring bias urging it and the movable flywheel to which it is mechanically linked into disengaged position. These elements cooperate with one another and with a manually-actuated trigger such that the latter must be depressed and the nosepiece retracted in order to engage the high energy friction clutch defined by the flywheels so as to operate the ram. A flywheel speed control is provided for matching the ram impact to the workload.

Abstract: A self-contained unit to be attached to a power punch press to provide a feed for stock being fed to the press. The unit contains a direct drive from the punch press crankshaft to feed rolls which are located adjacent to the table of the press. A non-slip, positive, drive is provided from the crankshaft of the punch press to an index drive which receives continuous, uniform rotary motion and converts it into non-continuous, incremental movement of the index drive output shaft. A positive, non-slip drive is provided between the index drive output shaft and the power driven feed roll. The feed roll unit also contains a compressed air-operated cylinder arrangement to release the idler feed roll at a predetermined period during the punch press cycle so that the stock being fed to the press is free from the feed rolls during the pressing portion of the punch press operating cycle.