Reciprocating Or Oscillating Claw Or Finger Patents (Class 226/62)
  • Patent number: 6799412
    Abstract: A cottoner having a wadding section forming station, the station having: a carrier, a holder, and a feed mechanism mounted on a base in series. Moving means on the base reciprocate the a carrier toward and away from the feed mechanism. An operating controller on the base open and close the holder. The carrier has a gripper for gripping a length of wadding material to carry it from the holding means toward the feeding means when the carrier is moved toward the feed mechanism while the holder is open. The carrier releases the length of wadding material when moved away from the feed mechanism while the holder is closed to hold the length of wadding material. The cottoner includes an inserting station for inserting each section of wadding material formed at the wadding section forming station into a container. The cottoner also has a sensing station for sensing if the wadding material has been inserted, and inserted properly, into the container at the inserting station.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: October 5, 2004
    Assignee: NJM/CLI Packaging Systems International
    Inventors: Luc Jalbert, Bruno Jalbert
  • Patent number: 5725140
    Abstract: A tape feeder for advancing a carrier tape with pockets containing parts in a surface mount placement system enhances the precision and reliability with which the tape is advanced and reduces the risk of loss of parts in uncovered pockets due to vibration by provision of a sprocket wheel to advance the tape, a reciprocating shutter to retain parts in uncovered pockets, and a retaining member disposed above an edge of the tape for contacting a portion of a top surface of the tape to retain the top surface portion in a plane when the tape is engaged by the sprocket wheel. The operation of the retaining member is assisted by a guide member including front and rear guides that contact the top surface of the tape and a support block that is pressed by a support spring against the bottom surface of a portion of tape between the front and rear guides. The operation of the tape feeder is adjusted to accommodate different pitches.
    Type: Grant
    Filed: September 9, 1996
    Date of Patent: March 10, 1998
    Assignee: Amistar Corporation
    Inventors: Jerome L. Weber, George M. Wohlhieter
  • Patent number: 5310301
    Abstract: A chip feeder comprising a sprocket for feeding intermittently a tape, which contains a plurality of chips and is sealed with a protective tape, at predetermined pitch intervals to a chip takeout portion; a roller for peeling the protective tape sealing the chip from the the tape fed intermittently; and a vacuum suction nozzle for taking up a chip out of the tape from which the protective tape is peeled off, wherein the roller peels the protective tape immediately before the vacuum suction nozzle takes out the chip when the tape is in a stationary state.
    Type: Grant
    Filed: June 22, 1992
    Date of Patent: May 10, 1994
    Assignee: Tenryu Technics Co., Ltd.
    Inventor: Takami Aono
  • Patent number: 5225860
    Abstract: Film transport for a motion picture camera with a claw 2, of which at least one claw tip 21, 22 advances the film to be transported, provided with perforations on one edge 10, stepwise past a gate, and a transport drive which comprises a working arm 5 connected with the middle segment 20 of claw 2 with articulation, said arm being connected by a claw crank pivot 12 with a crank arm 4 and moving claw 2 in such fashion that claw tips 21, 22 traverse an elongated closed curve which at one end enters the film plane and at the other end leaves it again, with crank arm 4 being coupled by a control arm 6 with a fixed bearing 14 of an oscillation crank 7, said crank being connected end segment 23 of claw 2 with articulation.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: July 6, 1993
    Assignee: Arnold & Richter Cine technik GmbH & Co.
    Inventor: Otto Blaschek
  • Patent number: 4952113
    Abstract: A chip feeder for supplying a multiplicity of chip parts retained on a tape from a tape supply section to a parts takeout section of a chip mounter. The chip feeder comprises: a working lever having a first, second and third arm portions; a driving source for applying working force to the first arm portion; a tape feed device interlockingly connected to the second arm portion, for intermittently feeding the tape at a predetermined pitch; a protective tape peel-off device interlockingly connected to the third arm portion, for peeling the protective tape off the tape intermittently fed, and a chip takeout device for taking out the chip parts from the tape. The driving source and the chip takeout device are, respectively, a driving source and a chip takeout device for the chip mounter itself, and the working lever is interlocked in operation with the chip mounter.
    Type: Grant
    Filed: November 14, 1988
    Date of Patent: August 28, 1990
    Assignee: Tenryu Technics Co., Ltd.
    Inventor: Teruhiko Fujioka
  • Patent number: 4943342
    Abstract: An inexpensive device for acurately and intermittently feeding a component transporting tape to a pickup station of a circuit board assemblying apparatus wherein a yieldable actuator intermittently drives a tape feed pawl until stopped by an adjustable limit stop to precisely position each component. A takeup reel for removing a retainer strip from the transport tape is yieldably driven by the tape through a belt which is controlled by a constant tension device.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: July 24, 1990
    Inventor: Valia S. Golemon
  • Patent number: 4892404
    Abstract: A film transporting mechanism includes two film transporting claws disposed on opposite sides of a center plane. The claws come into engagement with perforations in two rows of perforations in a film to be transported stepwise past a picture window. Each claw is driven by its own transporting drive. The tips of the claws traverse an elongate, closed curve which at one end enters into the film's traveling plane and at another end leaves the plane. Each of the transporting drives has at least one drive shaft that is mounted in axially spaced bearings mounted in openings in laterally spaced bearing plates. The bearings for the drive shaft, or drive shafts, are disposed on opposite sides of the center plane, in the opening of the bearing plates.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: January 9, 1990
    Assignee: Arnold & Richter Cine Technik GmbH & Co. Betriebs KG
    Inventor: Otto Blaschek
  • Patent number: 4768915
    Abstract: A chip feeder arranged to intermittently transport a tape having a row of a multiplicity of chip-like electronic parts retained thereon from a tape supply section to a chip takeout section along a guide path. Along the tape guide path are provided a pair of fixed and movable guide plates, a guide width adjusting device and a pitch adjusting device. The guide plates engage both lateral edges, respectively, of the tape being fed so as to guide it. The guide width adjusting device changes the spacing between the two guide plates in accordance with the width of the tape by moving the movable guide plate toward or away from the fixed guide plate. The pitch adjusting device adjusts the tape feed pitch in accordance with the dimensions of chips to be fed. Chips which are transported to the chip takeout section are removed from the tape by means of suction after a protective cover covering the tape has been separated therefrom.
    Type: Grant
    Filed: February 26, 1987
    Date of Patent: September 6, 1988
    Assignee: Tenryu Technics Co., Ltd.
    Inventor: Teruhiko Fujioka
  • Patent number: 4746943
    Abstract: A single mechanism performs three or four functions in a camera, the advancement of a film (6) mounted therein being used to provide energy to the mechanism. A tracking pin (2) is guided in a track (3) causing a tracking member (1) to move in a cyclic manner. For part of the cycle, a clawed end (4) of the tracking member (1) is in engagement with the film (6), the advancement of which causes movement of the tracking pin (2) along the forward portion (3a) of the track (3), and extension of a first tension spring (12). On movement of a shutter release lever (11) the tracking pin (2) moves rapidly along the remaining rear portion (3b) of the track (3) under the action of the tension springs (12, 13). A frame counter mechanism (7, 8, 9, 10) is actuated by the tracking member (1) at a convenient point. The shutter mechanism is also activated at a suitable point after operation of the shutter release lever (11).
    Type: Grant
    Filed: January 13, 1987
    Date of Patent: May 24, 1988
    Assignee: Dialbright Company, Ltd.
    Inventor: Roland W. Kohl
  • Patent number: 4675069
    Abstract: A device for feeding and cutting a strip of labels, on which strip the labels are joined integral with one another along lines at least a center portion of which consists of a slit. The labels are fed successively in two stages towards a cutting position; in the first of which stages, the label, is fed forward by means of a feeding device 051570752which, positively engaging the rear edge of the label, brings it into the vicinity of the cutting position; and in the second of which stages, the cutting position of the label is regulated by means of a conveyor roller which engages the uncut label by means of suction and feeds it forward so as to cause the front edge of the following label to be brought into "gentle" impact with stop elements on a fixed cutting blade.
    Type: Grant
    Filed: August 18, 1986
    Date of Patent: June 23, 1987
    Assignee: G.D Societa Per Azioni
    Inventors: Riccardo Mattei, Alessandro Minarelli
  • Patent number: 4658576
    Abstract: A device for feeding in parallel of ornamental chains to an operative unit of a machine suitable for realizing the bonding of the chains, including a mechanism for the transport of the chains towards the operative unit arranged for the engagement with side by side links of the chains and for obtaining the simultaneous and intermittent advancement without modifying the symmetry of their reciprocal position with respect to the advancement axis. The transport mechanism, comprising in particular needle-shaped members, are provided with a reciprocating translational motion in the forward direction and a reciprocating lifting and lowering motion in an orthogonal direction.
    Type: Grant
    Filed: March 29, 1985
    Date of Patent: April 21, 1987
    Assignees: I.C.M. S.p.A. Italiana Costruzioni Metal Meccaniche, T.E.M. s.r.l. Technologie Eletroniche e Meccaniche
    Inventors: Bucefari Massimo, Roberto Rubechini
  • Patent number: 4577792
    Abstract: A robotic end effector adapted to grip a fabric ply at a point remote from a free edge portion of the ply and a fabric edge influencing element resiliently supported from the end effector is provided to minimize distortion of the free edge portion of the fabric ply.
    Type: Grant
    Filed: April 2, 1985
    Date of Patent: March 25, 1986
    Assignees: The Singer Company, AVG Productions, Inc.
    Inventor: John M. Franke, Sr.
  • Patent number: 4534630
    Abstract: A transport and register movement for motion picture cameras and projectors and having spaced transport arms with cam operated claw pins and a crank shaft and transmission between the arms to oscillate the same and with a laterally offset drive shaft and cam operated register pins and a crank pin oscillating a counterbalance in opposition to motion of the arms.
    Type: Grant
    Filed: January 31, 1984
    Date of Patent: August 13, 1985
    Assignee: Imax Systems Corporation
    Inventor: Geoffry H. Williamson
  • Patent number: 4501183
    Abstract: A feed assembly is engageable with feed holes spaced along the length of a taped supply of electrical components in order to index the taped components to a pick-up station and aid in transfer of the components from the tape to a turret-type vacuum head at the pick-up station. Cyclical actuation of the feed assembly actuates a cutter for that portion of the tape which has been emptied of the components.
    Type: Grant
    Filed: April 25, 1984
    Date of Patent: February 26, 1985
    Assignee: Universal Instruments Corporation
    Inventors: Weibley J. Dean, Charles E. Johnson, Phillip A. Ragard
  • Patent number: 4459733
    Abstract: Helixes are assembled into face structures by providing an initial helix which is stretched and retained on a work table, and a first helix which is attached to the initial helix, inserting into the first helix of a prestretched second helix by means of a joining tool and from a discharge conduit so that the second helix exits from the discharge conduit at an acute angle with respect to the first helix and moved along the latter connecting the second helix with the first helix by inserting an insert wire into the overlapping areas between the head arches of the first and second helixes, and displacing the thus finished face structure by a predetermined distance between insert wires in a timed sequence before a subsequent such inserting step for a further helix to be inserted into the second helix.
    Type: Grant
    Filed: June 2, 1981
    Date of Patent: July 17, 1984
    Inventors: Wolfgang Bachmann, Dieter Spahn
  • Patent number: 4402581
    Abstract: A claw feed mechanism for a motion picture camera for intermittently advancing film for exposure. A first end of an elongated, light-weight film feeding pin is pivotally coupled to a first crank. The film feeding pin includes an advancing taper at the second end thereof for engaging with and advancing the film. A second crank includes a guide for guiding the film feeding pin. The first and second cranks are mutually eccentrically driven so that the film feeder pin reciprocates with respect to the guide, while the film feeder pin and the guide synchronously pivot so that the advancing taper on the film feeder pin defines an elliptical path thereby intermittently engaging with and advancing the film for exposure.
    Type: Grant
    Filed: September 30, 1982
    Date of Patent: September 6, 1983
    Inventor: Fritz Bauer
  • Patent number: 4385718
    Abstract: Apparatus (20) for imparting stepwise movement to a strip (10) having pilot holes (12) comprising, a frame (27), a carriage (26) mounted by said frame to be longitudinally movable in relation thereto, a pin (22) coupled with said carriage movable therewith and laterally movable in relation to said path between positions at which pin is adapted to enter into and to be retracted from a pilot hole in said strip. A link (30) is adapted to undergo alternate forward and reverse strokes and is coupled to said carriage by a lost motion coupling (46, 57, 56, 57) so that, during a first interval of each such stroke, the carriage and link are uncoupled with the carriage remaining stationary and, during a second interval of each of such strokes, the carriage and link are coupled to move together.
    Type: Grant
    Filed: October 9, 1981
    Date of Patent: May 31, 1983
    Assignee: Western Electric Company, Inc.
    Inventor: Dallas G. Norris
  • Patent number: 4367837
    Abstract: Apparatus including a tape magazine for elongated fasteners and a mechanism for feeding such fasteners in front of a driving means for driving the fasteners into a workpiece. An embodiment comprising an attachment for an electric drill in which screws are carried by the tape from the magazine into the mechanism for feeding in front of a screwdriver rotated by the electric drill is described in detail. The conformation of the tape and the tape indexing means provides jam-proofing and double feed prevention features in addition to reducing the driving force required and enabling the tape to be reloaded for reuse.
    Type: Grant
    Filed: April 25, 1980
    Date of Patent: January 11, 1983
    Inventor: Anthony P. Manino
  • Patent number: 4357082
    Abstract: A photographic system is disclosed herein having a film reel-to-reel cartridge insertably received into a camera having a high speed film advancement or transport mechanism and a projector adapted to immediately develop the film and project moving images onto a screen. The advancement mechanism includes a support plate for movably supporting a pair of elongated members substantially normal with respect to each other. Each member is movably mounted on the plate and their adjacent and opposing ends move in a substantially oval manner by respective or associated eccentric drives. One member includes a film opening registering pin while the other member includes a film drive claw. The eccentric drive times the pin and claw so as to properly advance the film through the camera between its supply and take-up reels.
    Type: Grant
    Filed: December 29, 1980
    Date of Patent: November 2, 1982
    Inventor: Maurice G. Amesbury
  • Patent number: 4236659
    Abstract: A mechanism is disclosed for feeding tag stock having spaced-apart drive holes and comprises a pair of slidably mounted carrier arms beneath the tag stock each having a plurality of spring loaded pins on an end thereof. The pins of each carrier arm are alternately brought into engagement with the tag stock by means of a rotating cam which engages a follower on the carrier arm. A pin in each of the carrier arms will alternately engage a hole in the tag stock in registery therewith to sequentially advance the tag stock a desired increment of distance as the cam continues to rotate.
    Type: Grant
    Filed: May 3, 1979
    Date of Patent: December 2, 1980
    Assignee: Esselte Pendaflex Corporation
    Inventor: Richard A. Edwards
  • Patent number: 4203656
    Abstract: A film strip feed shuttle mechanism is provided in which a film engaging claw is supported laterally of an elongated body member adapted to be driven by camming surfaces for both longitudinal reciprocation and oscillatory rotation with respect to an axis established by means for supporting the body member. The shuttle is supported by tension springs retaining the member against the supporting means. The camming surface effecting the longitudinal reciprocation of the shuttle and its mating cam follower surface are positioned with respect to the axis and the laterally supported film engaging claw so that the frictional force developed as a result of the interaction between the cam and cam follower effect an induced torque encouraging rotation of the body member and the claw carried thereby about the axis in a direction causing the claw to move into engagement with the film strip.
    Type: Grant
    Filed: September 13, 1978
    Date of Patent: May 20, 1980
    Assignee: Polaroid Corporation
    Inventor: David C. McElwaine
  • Patent number: 4203335
    Abstract: A device for feeding a ribbon of sausage support loops into a clip attachment apparatus is attached to the clip attachment apparatus and includes a body member with a guide track for directing the ribbon of loops from a storage reel to the clip apparatus. A reciprocating piston operated drive pin engages the ribbon to incrementally drive the ribbon forward into position for attachment of a single loop to a sausage casing. A knife separates the single loop from the ribbon upon attachment of the loop to the sausage casing by the clip apparatus. Subsequently, the drive pin is disengaged from the ribbon and is reversibly driven into position for re-engagement and further advancement of the ribbon. The movement of the drive pin and knife is controlled by a cam track in the body member.
    Type: Grant
    Filed: July 3, 1978
    Date of Patent: May 20, 1980
    Assignee: Rheem Manufacturing Company
    Inventor: Rufus G. Coffey
  • Patent number: 4199233
    Abstract: A film strip feed shuttle mechanism in which a film engaging claw is supported laterally of an elongated, transversely arcuate body member adapted to be driven by a single compound cam for both longitudinal reciprocation and oscillatory rotation on an axis established by bearing blocks in radially opposite quadrants at opposite ends of the body. The shuttle is supported by tension springs retaining the body member against the bearing blocks and compound driving cam.
    Type: Grant
    Filed: October 12, 1978
    Date of Patent: April 22, 1980
    Assignee: Polaroid Corporation
    Inventor: Donald T. Scholz
  • Patent number: 4123153
    Abstract: An advance mechanism for perforated materials for advancing the material through a path of light. The mechanism includes a support structure adapted to be in line with a source of light so that light passes through an aperture in the support. The perforated material is supported and advanced along a pathway into and out of alignment with the aperture. A pawl mechanism including a spring is on the support adjacent to the aperture and normally positioned in a normally retracted position in alignment with a slot adjacent to the aperture in the support. Drive structure biases the spring and directs the pawl through the slot into engagement with a perforation in the material and then along the slot a predetermined distance to advance the material and then release the pawl permitting the spring to return the pawl to the retracted position out of the slot. The pawl is then returned to the normally retracted position. The movement of the pawl along the length of the slot is restricted.
    Type: Grant
    Filed: February 8, 1977
    Date of Patent: October 31, 1978
    Assignee: Instructional/Communications Technology, Inc.
    Inventor: John N. Brucat
  • Patent number: 4094595
    Abstract: A control mechanism for the pull-down pawl of a projector, for the projection of films with different frame frequencies, comprises a pot-shaped worm gear and a control drum coaxial with and connected thereto for rotation therewith, movable in axial direction relative thereto and arrestable against a force of biasing means in one of a plurality of selected positions. The control drum is provided on its periphery with a plurality of different cam curves and a pin, movable in a direction normal to the axis of the control drum, engages with one a cam curve, brought in a selected position of the drum in alignment therewith, while the other end of the pin cooperates with a pull-down pawl to move an end of the latter into and out of perforations of the film. The worm gear meshes with a worm driven by a shaft carrying a cam engaged by a cam follower connected to the pull-down pawl to move the latter along a feed stroke when the end of the pull-down pawl is engaged in one of the film perforations.
    Type: Grant
    Filed: January 11, 1977
    Date of Patent: June 13, 1978
    Assignee: Robert Bosch GmbH
    Inventor: Hans Lieckfeldt
  • Patent number: 4078765
    Abstract: The invention is concerned with a motion picture projector or camera, with a claw for feeding the motion picture film, having at least one switch provided in one or several electric circuits of the motion picture projector or camera, which switch is controlled by said claw. An 8-mm motion picture camera in which a switch for various circuits of the camera is provided within the intercept of the claw is already familiar. In such an arrangement, contact elements of the switch are kept mutually in mesh by the claw while it engages the film or disengages from its perforations and if there is no film, the claw releases or opens these contact elements. Switching contacts of this type may be provided, e.g., in the electric circuits of the feed mechanisms or of the exposure control device of a motion picture camera. In this way, when no film is inserted, the batteries are unable to discharge.
    Type: Grant
    Filed: May 24, 1976
    Date of Patent: March 14, 1978
    Assignee: Bolex International SA
    Inventor: Rudolf Bogli
  • Patent number: 4053214
    Abstract: An advance mechanism for perforated materials such as film strips. The mechanism advances the material through a path of light and includes a support structure adapted to be aligned with a source of light so that the light passes through a rotating aperture in the support and scans line of print. The structure is provided for directing the perforated material along a pathway into and out of vertical alignment with the aperture. A pawl mechanism including a spring on a support adjacent to the aperture and is in a normally retracted position in alignment with a slot adjacent to the aperture in the support. Drive structure is provided for cooperating with a biasing spring and directing the pawl mechanism through the slot into engagement with a perforation in the material and then along the slot a predetermined distance to advance the material. Thereafter the pawl mechanism is released by the drive structure to permit the spring to return the pawl to the retracted position out of the slot.
    Type: Grant
    Filed: March 5, 1976
    Date of Patent: October 11, 1977
    Assignee: Instructional Communications Technology, Inc.
    Inventor: John N. Brucat
  • Patent number: 4050618
    Abstract: An apparatus for bonding the flexible leads of a sprocketed lead frame tape to the terminals of an integrated circuit device is provided with a movable index station, movable bonding anvil means and a vertically moving bonding tool. The flexible leads on the lead frame tape are automatically positioned by the indexing station relative to the bonding tool with extreme final accuracy. The device to be bonded to the flexible leads may be manually or automatically positioned relative to said bonding tool to align the bonding tool, the flexible leads and the integrated circuit device terminals in axial bonding alignment.
    Type: Grant
    Filed: June 19, 1975
    Date of Patent: September 27, 1977
    Inventors: Thomas L. Angelucci, Sr., Joseph L. Angelucci
  • Patent number: 4017167
    Abstract: In the present cam-driven intermittent movement for motion picture machines the pull-down action is shared by a plurality of cams mounted on a common shaft and operating in tandem, thereby reducing the noise and vibration and/or permitting faster pulldown. One cam drives a claw arm in its swinging movement about a pivot, while the other cam drives a carrier arm which is pivoted at one end on the machine frame and carries at its other end the claw arm pivot. Meshing action of the claw may be controlled by cam action applied to either arm. Such action may be derived from the same cam as the pull-down action, or may employ an auxiliary meshing cam.
    Type: Grant
    Filed: March 5, 1976
    Date of Patent: April 12, 1977
    Inventor: George A. Mitchell
  • Patent number: 4014488
    Abstract: A fastener feed assembly for a tool such as a power screwdriver having a drive member such as a rotatable bit includes a base fixed to the tool and a nose assembly slidably related to the base. The nose assembly includes a workpiece engaging surface, and when the tool is moved toward the workpiece during a fastener driving operation, the base moves toward the nose assembly. A return spring separates the base and nose assembly when the tool is withdrawn away from the workpiece. A strip of fasteners is fed from a magazine along a feed path through the nose assembly with sequential fasteners located in a drive position. Normally the drive member is spaced from a fastener in the drive position. During movement of the tool toward the workpiece in a driving operation, the drive member moves into engagement with a fastener in the drive position, and then continues to move in order to drive the fastener into the workpiece. A pawl is engageable with the strip in order to advance the strip along the feed path.
    Type: Grant
    Filed: July 10, 1975
    Date of Patent: March 29, 1977
    Assignee: Duo-Fast Corporation
    Inventors: Frank R. Potucek, Allen R. Obergfell
  • Patent number: 4003647
    Abstract: A claw mechanism for the transport of a film in a film projector. A claw arm is disposed parallel to the transport path and pivotable about an axis transverse to the direction of transport; a claw means is disposed substantially transverse to the transport path, pivotally connected to the free end of the claw arm about an axis transverse to the direction of transport; and a drive shaft disposed parallel to said two axes, which rotates continuously during operation, comprises a crank which engages a slot in the claw means.
    Type: Grant
    Filed: September 4, 1975
    Date of Patent: January 18, 1977
    Assignee: U.S. Philips Corporation
    Inventor: Bernardus Johannes Kuppens
  • Patent number: 3934962
    Abstract: A film transport has an intermittent drive mechanism with a claw for engaging sprocket holes in a film. The claw is driven by the mechanism to pull the film down frame by frame. Two or more cams are used to cause the claw to carry out a four-sided motion with a fast pull-down action. One of the cams or an additional cam may be provided to render the claw operative to effect pull-down at alternately long and short dwell intervals proportioned to allow scanning of a film frame by different numbers of complete television fields.
    Type: Grant
    Filed: February 8, 1974
    Date of Patent: January 27, 1976
    Assignee: Colourvision Associates
    Inventors: John Thurston Taylor, Anthony James Halliday, Jonathan George Cordy Angel, Bernard Blakemore
  • Patent number: 3930297
    Abstract: A fastener feed assembly for a tool such as a power screwdriver having a drive member such as a rotatable bit includes a base fixed to the tool and a nose assembly slidably related to the base. The nose assembly includes a workpiece engaging surface, and when the tool is moved toward the workpiece during a fastener driving operation, the base moves toward the nose assembly. A return spring separates the base and nose assembly when the tool is withdrawn away from the workpiece. A strip of fasteners is fed from a magazine along a feed path through the nose assembly with sequential fasteners located in a drive position. Normally the drive member is spaced from a fastener in the drive position. During movement of the tool toward the workpiece in a driving operation, the drive member moves into engagement with a fastener in the drive position, and then continues to move in order to drive the fastener into the workpiece. A pawl is engageable with the strip in order to advance the strip along the feed path.
    Type: Grant
    Filed: November 5, 1973
    Date of Patent: January 6, 1976
    Assignee: Duo-Fast Corporation
    Inventors: Frank R. Potucek, Allen R. Obergfell