Operation Of Member Controlled By Means Responsive To Position Of Element Remote From Member (e.g., Interlock) Patents (Class 83/399)
  • Patent number: 9174288
    Abstract: A miter saw including: a base section; a saw blade; a cutting section; a support section; and a guiding mechanism. The support section includes a pivot support portion and a slide support portion. The pivot support portion supports the cutting section such that the cutting section is pivotally moved toward and away from the base section. The slide support portion slidably supports the pivot support portion to move the cutting section in a sliding direction that is in parallel with an upper surface of the base section and orthogonal to an axial direction of a rotational axis of the saw blade. The guiding mechanism is configured to guide a movement of the cutting section in the sliding direction in accordance with a pivotal movement of the cutting section toward the base section. The guiding mechanism is provided in association with the cutting section and the slide support portion.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: November 3, 2015
    Assignee: Hitachi Koki Co., Ltd.
    Inventors: Ryuichi Imamura, Shigeharu Ushiwata
  • Patent number: 9156178
    Abstract: An electrically operated slicing machine for cutting slices from product has cutting device with a circular knife mounted in a machine housing that rotates in a cutting plane (E; E?) and a substantially flat support plate having a support surface for placement of the carriage carrying the product. The carriage is guided parallel to the cutting plane via a carriage base along a slide rail rigidly connected to the machine housing. The carriage base is supported to be movable relative to the machine housing via at least two support elements that are movably accommodated within a guide space.
    Type: Grant
    Filed: June 15, 2011
    Date of Patent: October 13, 2015
    Assignee: Bizerba GmbH & Co. KG
    Inventor: Nikolaus Koch
  • Publication number: 20140260861
    Abstract: A table saw in one embodiment a swing arm movable along a swing arm path between a first swing arm position adjacent a latch hold mechanism and a second swing arm position spaced apart from the latch hold mechanism, a blade supported by the swing arm, a charge coupling plate mounted in close proximity to the blade so as to form a capacitor, an actuating device configured to transfer a force to the swing arm when the swing arm is maintained at the first swing arm position resulting in a bias on the latch hold mechanism, and a control system configured to control the actuating device to transfer the force to the swing arm in response to a sensed change in capacitance of the capacitor.
    Type: Application
    Filed: March 11, 2014
    Publication date: September 18, 2014
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventors: Robert Doumani, Eric Laliberte, Timothy Szweda, Mark Talesky
  • Publication number: 20140047961
    Abstract: A band saw has a blade tension adjustment to permit the blade tension to be reduced during times when the saw will not be used for a time. A sensor is connected to the blade tension adjustment. The sensor inhibits saw operation if the tension adjustment is set to a reduced tension setting. The sensor enables the saw operation if the tension adjustment is set to a full operating tension setting.
    Type: Application
    Filed: August 12, 2013
    Publication date: February 20, 2014
    Applicant: WALTER MEIER (MANUFACTURING) INC.
    Inventor: Barry M. Schwaiger
  • Patent number: 8534174
    Abstract: A pyrotechnic actuator for a power cutting tool is disclosed. The pyrotechnic actuator comprises a housing defining a cavity therein, a piston positioned at least partially within the cavity, and an insert-molded unitary assembly positioned within the cavity. The unitary assembly comprises a piston engagement member and a base. A sealed void is defined intermediate the piston engagement member and the base. The unitary assembly comprises a breakable member extending intermediate the piston engagement member and the base and a pyrotechnic initiator positioned at least partially within the base. The pyrotechnic initiator, upon application of a current pulse thereto, is configured to generate a pressurized gas in the sealed void that exerts a force on the piston engagement member and breaks the breakable member thereby causing the piston engagement member and the piston to move relative to the base and the housing.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: September 17, 2013
    Assignee: Power Tool Institute
    Inventors: Eishi Kajita, Vahan Avetisian, Abrar Tirmizi
  • Patent number: 8485078
    Abstract: A combination table-miter saw including a base, an arm rotatably coupled to the base and moveable relative to the base between a first position and a second position, and a platform coupled to the arm and moveable relative to the arm between a first position and a second position. The combination table-miter saw also includes a safety device configured to allow the combination table-miter saw to function as a table saw when the arm is in the first position and to allow the combination table-miter saw to function as a miter saw when the platform is in the first position.
    Type: Grant
    Filed: July 16, 2012
    Date of Patent: July 16, 2013
    Assignee: Robert Bosch Tool Corporation
    Inventor: John C. Janson
  • Publication number: 20130152753
    Abstract: A pyrotechnic actuator for a power cutting tool is disclosed. The pyrotechnic actuator comprises a housing defining a cavity therein, a piston positioned at least partially within the cavity, and an insert-molded unitary assembly positioned within the cavity. The unitary assembly comprises a piston engagement member and a base. A sealed void is defined intermediate the piston engagement member and the base. The unitary assembly comprises a breakable member extending intermediate the piston engagement member and the base and a pyrotechnic initiator positioned at least partially within the base. The pyrotechnic initiator, upon application of a current pulse thereto, is configured to generate a pressurized gas in the sealed void that exerts a force on the piston engagement member and breaks the breakable member thereby causing the piston engagement member and the piston to move relative to the base and the housing.
    Type: Application
    Filed: September 27, 2010
    Publication date: June 20, 2013
    Applicant: Power Tool Institute
    Inventors: Eishi Kajita, Vahan Avetisian, Abrar Tirmizi
  • Publication number: 20130081525
    Abstract: A saw assembly includes a housing, a drive member, a motor, a switch, a trigger, a lockout lever, and a stop structure. The housing defines an interior space, and the housing has a forward housing portion defining a forward housing opening and a rearward housing portion defining a rearward housing opening. The drive member extends through the forward housing opening, and the drive member is configured to be moved in a repeating pattern. The motor is positioned in the interior space and is configured to move the drive member in the repeating pattern. The switch is positioned in the interior space and has an actuator movable between an actuated position and a deactuated position.
    Type: Application
    Filed: September 30, 2011
    Publication date: April 4, 2013
    Applicants: Robert Bosch GmbH, Robert Bosch Tool Corporation
    Inventor: Jaime Moreno
  • Publication number: 20120279368
    Abstract: A combination table-miter saw including a base, an arm rotatably coupled to the base and moveable relative to the base between a first position and a second position, and a platform coupled to the arm and moveable relative to the arm between a first position and a second position. The combination table-miter saw also includes a safety device configured to allow the combination table-miter saw to function as a table saw when the arm is in the first position and to allow the combination table-miter saw to function as a miter saw when the platform is in the first position.
    Type: Application
    Filed: July 16, 2012
    Publication date: November 8, 2012
    Inventor: John C. Janson
  • Patent number: 8220372
    Abstract: A combination table-miter saw including a base, an arm rotatably coupled to the base and moveable relative to the base between a first position and a second position, and a platform coupled to the arm and moveable relative to the arm between a first position and a second position. The combination table-miter saw also includes a safety device configured to allow the combination table-miter saw to function as a table saw when the arm is in the first position and to allow the combination table-miter saw to function as a miter saw when the platform is in the first position.
    Type: Grant
    Filed: April 28, 2009
    Date of Patent: July 17, 2012
    Assignee: Credo Technology Corporation
    Inventor: John C. Janson
  • Patent number: 7810418
    Abstract: A method and apparatus for sizing window coverings slidably extendable from a bay into an aisle of a retail outlet. The method includes the steps of locating the center of the window covering relative to a cutting station utilizing a half scale for removing a portion of the window covering from each of its ends.
    Type: Grant
    Filed: March 3, 2003
    Date of Patent: October 12, 2010
    Assignee: Newell Window Furnishings, Inc.
    Inventor: Joseph Potts
  • Publication number: 20100180742
    Abstract: The present invention relates to a device for braking or locking a shaft (6) of a microtome (1). The microtome (1) comprises the shaft (6), an actuating element (2), a movement mechanism (37) and a housing (38). With the movement mechanism (37) an object to be cut can be moved relative to a knife blade. The actuating element (2) can be manually actuated by an operator. As a result thereof, the shaft (6) can be rotated. Via the shaft (6), the movement mechanism (37) for performing the relative motion between the object and the knife blade can be driven. Further, the present invention relates to a method for operating a device for braking a shaft (6) of a microtome (1). So that the device can be used in a mechanically formed movement mechanism (37), the inventive device is characterized by an actuator and a braking unit (25). The braking unit (25) is connected in a rotatably fixed manner to the shaft (6).
    Type: Application
    Filed: June 6, 2008
    Publication date: July 22, 2010
    Applicant: LEICA BIOSYSTEMS NUSSLOCH GMBH
    Inventors: Roland Walter, Stefan Thiem, Andreas Laudat
  • Patent number: 7216574
    Abstract: This invention relates to a food slicing apparatus, and in particular to an apparatus for slicing bread. The food slicing apparatus of the invention has an enclosure to support the food to be sliced. The enclosure features an access opening through which food can be introduced into the enclosure. A cover for the access opening can be provided, moveable relative to the enclosure from an open position to a closed position. A guide is provided within the enclosure for guiding a blade to slice food supported within the enclosure. A stop is also provided to at least partially obstruct the guide. The cover is connected to at least one of the guide and the stop to displace the guide and the stop relative to one another, so that when the cover is in an open position, the stop at least partially obstructs the guide. In the embodiment disclosed, the stop is connected to the cover and moveable relative to the guide to at least partially obstruct the guide when the cover is in the open position.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: May 15, 2007
    Inventor: Charles A. Woods
  • Patent number: 6997091
    Abstract: A circular saw includes a table having an upper surface for placing a workpiece thereon. A saw unit has a saw blade mounted thereon and is supported on the table such that the saw unit is movable in a horizontal direction parallel to the upper surface of the table and is movable in a vertical direction perpendicular to the upper surface of the table. At least one of a first lock device and a second lock device is provided. The first lock device is operable to prevent the saw unit from moving in the horizontal direction in response to the movement of the saw unit in the vertical direction. The second lock device is operable to prevent the saw unit from moving in the vertical direction in response to the movement of the saw unit in the horizontal direction.
    Type: Grant
    Filed: July 15, 1998
    Date of Patent: February 14, 2006
    Assignee: Makita Corporation
    Inventor: Yoshinori Shibata
  • Patent number: 6857939
    Abstract: A dicing machine including a flange cover which covers the blade and is divided into two such that a first cover is openable. An interlock device is provided so that a blade attaching and detaching device cannot be attached when the first cover is at the closing position, the first cover cannot turn to the closing position when the blade attaching and detaching device is attached, and the processing of the work is not started when detected radiation of a blade breakage detector, attached to the first cover, is not reduced by a predetermined amount. Consequently, the blade and the work are prevented from being damaged by processing the work without applying coolant, the mechanism of the dicing machine and the blade attaching and detaching device are prevented from being damaged without detaching the blade attaching and detaching device, and the work is prevented from being being unprocessed.
    Type: Grant
    Filed: May 14, 2002
    Date of Patent: February 22, 2005
    Assignee: Tokyo Seimitsu Co., Ltd.
    Inventors: Tadashi Adachi, Masayuki Azuma, Takayuki Kaneko
  • Patent number: 6824034
    Abstract: A setting tool includes a piston guide (13) displaceably arranged in the housing (11), a bolt guide (12) connection element (16) for fixedly connecting the bolt guide (12) with the piston guide (13) for joint displacement therewith, and a locking member (23) provided on the setting tool (10) and having a locking position (27) in which displacement of the bolt guide (12) and the piston guide (13), relative to the housing (11), from their initial position, is prevented when the bolt guide (12) and the piston guide (13) are not completely connected by the connection element (16), and a release position (26) in which displacement of the bolt guide (12) and the piston guide (13) relative to the housing (11) from their initial position to their operational position, can take place when the bolt guide (12) and the piston guide (13) are completely connected by the connection element (16).
    Type: Grant
    Filed: August 7, 2003
    Date of Patent: November 30, 2004
    Assignee: Hilti Aktiengesellschaft
    Inventors: Markus Sprenger, Gebhard Gantner
  • Publication number: 20020166552
    Abstract: In the dicing machine, a flange cover with which the blade is covered is divided into two, and the first cover is openable. An interlock device is provided so that a blade attaching and detaching device cannot be attached when the first cover is at the closing position, the first cover cannot turn to the closing position when the blade attaching and detaching device is attached, and the processing of the work is not started when detected luminous energy of a blade breakage detector, which is attached to the first cover, is not reduced by a predetermined amount. Thus, the blade and the work are prevented from being damaged by processing the work without applying coolant, the mechanism of the dicing machine and the blade attaching and detaching device are prevented from being damaged by operating the dicing machine without detaching the blade attaching and detaching device, and the work is prevented from being unprocessed but sent out by operating the dicing machine without attaching the blade.
    Type: Application
    Filed: May 14, 2002
    Publication date: November 14, 2002
    Applicant: Tokyo Seimitsu Co., Ltd.
    Inventors: Tadashi Adachi, Masayuki Azuma, Takayuki Kaneko
  • Publication number: 20020005102
    Abstract: A cutting apparatus includes a first annular member having a center eccentric from an axis of a rotating shaft and fixed to the rotating shaft. The cutting apparatus further includes a bearing with its inner race fixed to the first annular member, a disk cutter fixed relative to an outer race of the bearing, and a balancer fixed to the rotating shaft in a state being eccentric in the direction opposite to the eccentric direction of the first annular member.
    Type: Application
    Filed: July 12, 2001
    Publication date: January 17, 2002
    Applicant: TENRYU SEIKYO KABUSHIKI KAISHA
    Inventors: Sokichi Takemura, Katsuhito Iwata
  • Patent number: 5615591
    Abstract: A food product slicing machine includes a coupling and associated interlock mechanism for connecting and disconnecting a carriage arm of the food slicing machine to and from a reciprocating carriage base mounted to the housing of the machine. The coupling includes a cylindrical mounting head which is rotatably mounted in the carriage base by a bracket. The mounting head contains a slot for slidably receiving a foot of the carriage arm, and the bracket also contains a slot with which the mounting head slot can be aligned through rotation of the mounting head within the bracket. The mounting head slot and bracket slot must be aligned in order to attach or remove the carriage arm's foot to or from the carriage base. The interlock mechanism is provided to prohibit the alignment of the slots when the gauge plate of the slicing machine is not in a safe position. Accordingly, the carriage arm may not be removed from the carriage base when the gauge plate is not in the safe position.
    Type: Grant
    Filed: August 12, 1994
    Date of Patent: April 1, 1997
    Assignee: Premark FEG Corporation
    Inventors: Richard P. Scherch, Timothy A. Schrand, James A. Shirk, Danny J. Mitchell
  • Patent number: 5477761
    Abstract: A device for dispensing a bandage material has a container for accommodating a supply of bandage material, a mechanism for advancing the bandage material from the container so as to expose a desired portion of the bandage material outside of the container, a mechanism for cutting the exposed piece of the bandage material, and including a cutting element movable between an initial position before cutting the piece of the bandage material and a final position after the piece of the bandage material has been cut off during which movement from the initial position to the final position the piece of the bandage material is being cut, and a structure for preventing advancement of the bandage material by the advancing mechanism when the cutting element is in the final position.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: December 26, 1995
    Assignee: Holtsch Metallwarenherstellung
    Inventor: Peter Holtsch
  • Patent number: 5377571
    Abstract: A safety guard system for a band saw that comprises a flexible member and a sensor for deactivating the band saw when the flexible member is not deployed correctly. The flexible member has a resting position and a sawing position. In both positions, the flexible member provides a protective barrier between the band saw user and the band saw blade. The flexible member automatically adjusts by flexing to accommodate different sized work pieces.
    Type: Grant
    Filed: October 19, 1993
    Date of Patent: January 3, 1995
    Inventor: Harold Josephs
  • Patent number: 5287780
    Abstract: A radial arm saw guard with operational interlock and adjustable outfeed user barrier is disclosed. The radial saw includes a motor driven saw blade that is mounted on a yoke depending from a supporting arm that overhangs a worktable. The motor driven saw blade is movable relative to a worktable mounted fence in order to enable the motor driven saw blade to be operated for rip cutting of workpieces longitudinally relative to the fence and for cross cutting transverse relative to the fence. A blade guard is mounted in fixed position relative to the yoke for covering at least approximately an upper half of the motor driven saw blade. An adjustable outfeed user barrier is mounted to the upper blade guard for operation between an upper disengaged position exposing the motor driven saw blade and a lower engaged position covering an outfeed end of the motor driven saw blade to protect a user during rip cutting.
    Type: Grant
    Filed: March 15, 1993
    Date of Patent: February 22, 1994
    Assignee: Emerson Electric Co.
    Inventors: James I. Metzger, Jr., Jack E. Hyde, Jr., Robert E. Steiner
  • Patent number: 4949611
    Abstract: In a heavy-duty saw assembly having a base, a pair of columns, a feed carriage guidably mounted upon the columns supporting a power-driven saw, a hydraulic lift feed cylinder assembly within each column and connected to the carriage, an elongated saw train extending at right angles to the base, including a plurality of transverse rollers, a sprocket chain connected to the rollers for selective rotation in unison for intermittently feeding an elongated workpiece onto the base transversely of and under the saw, spaced normally open rear and front hydraulic vises adjustably mounted upon the base adapted to selectively grip the work, and a pair of spaced manually rotatable lead screws journaled upon the base connected to the vises respectively, the improvement of a hydraulic circuit therefor which comprises first and second hydraulic circuits, first and second power-operated hydraulic pumps for feeding pressurized liquids into the circuits and a four-way, three-position, spring centered, solenoid-activated saw ca
    Type: Grant
    Filed: December 20, 1989
    Date of Patent: August 21, 1990
    Assignee: Steel Industries, Inc.
    Inventor: Michael J. Fillion
  • Patent number: 4930386
    Abstract: A sawmill has an elongated track extending longitudinally adjacent a platform for supporting a log. A carriage which carries a bandsaw is reciprocally movable along the track past the platform to cut the log with the bandsaw. The sawmill also has a clamp mechanism reciprocally movable laterally across the platform to clamp the log in place, which mechanism is movable between an upright position and a reclining position to provide a clamp for an uncut log and a clamp for a squared log. The sawmill also has a log turning mechanism and a log loading mechanism. The log loading mechanism includes two arms which are rotatable from the ground to the platform to load a log onto the platform. A hydraulic cylinder is coupled to each arm and acts against the ground to move the arms. The mechanisms are hydraulically actuated and the sawmill includes an electric motor which drives a hydraulic pump for providing pressurized hydraulic fluid to actuate the hydraulically actuated mechanisms.
    Type: Grant
    Filed: December 10, 1987
    Date of Patent: June 5, 1990
    Assignee: Wood-Mizer Products, Inc.
    Inventors: Donald R. Laskowski, Daniel R. Tekulve
  • Patent number: 4751949
    Abstract: A wood cutting machine having a knife-like blade for cutting and chipping wood into large pieces. The blade is oriented at an angle to the direction of wood grain thereby lowering the force required to cut the wood.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: June 21, 1988
    Inventor: Alois Berner
  • Patent number: 4685364
    Abstract: A rotary slicer 20 for comestible products. A stationary magazine 26 supports a product upright as a rotary table 38 carries a rotary knife 40 in an orbit that passes beneath the magazine. A freely rotatable center plate 80 of the blade facilitates movement of the blade through the product. Orbiting movement of the blade is automatically stopped with the blade remote from the magazine and electrical interlocks 109, 112 prevent operation without all protective safety covers 24, 102, 106 in place. A removable sharpener 172 is attachable to the top of table and operates with the blade flush with the table top. A product follower 118 within the magazine holds the product in place and urges it downward during slicing. The follower in part extends outward between the magazine 26 and magazine cover 106 to allow manual movement and release from a latched raised position, after the magazine cover is closed.
    Type: Grant
    Filed: May 17, 1985
    Date of Patent: August 11, 1987
    Assignee: Bettcher Industries, Inc.
    Inventors: Oliver W. Scheflow, William J. Roblin, III, Richard C. Kirsch, William G. Wunder
  • Patent number: 4637289
    Abstract: A saw wherein an arbor is mounted to drive a circular saw blade from below a flat work surface upward through a slot in the work surface to sever any work piece suitably disposed on the work surface. A guard/clamp above the work surface is lowered to engage and clamp each such work piece on the work surface before the saw blade begins its ascent. A sensor is mounted on the guard/clamp to sense the presence of a work piece at a location immediately on the work piece feed side of the saw blade and adjacent a saw fence. The sensor prevents operation of the saw when the sensor fails to establish the presence of a work piece on the work surface.
    Type: Grant
    Filed: November 2, 1984
    Date of Patent: January 20, 1987
    Assignee: Whirlwind, Inc.
    Inventor: Gordon Ramsden
  • Patent number: 4615250
    Abstract: A household slicing machine wherein a disc shaped rotary knife is mounted in a vertical plane and a guard, which is separable from the housing of the machine, is movable in a second plane that is parallel to the vertical plane of the knife between a first position in which the guard cooperates with an adjustable abutment to conceal the knife, a second position in which the knife is exposed and the machine is ready for use, and a third position in which the guard can be detached from the housing. A spring-biased locking element is reciprocably mounted in the front wall of the housing to extend into an opening of the guard when the latter assumes its second position and to extend in front of an end face of the guard when the latter assumes its first position. This prevents accidental shifting of the guard from the selected position because each such shifting must be preceded by manual depression of the locking element.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: October 7, 1986
    Assignee: Robert Krups Stiftung & Co. KG
    Inventors: Norbert Flammann, Edgar Rixen
  • Patent number: 4598620
    Abstract: A household slicing machine wherein a disc-shaped knife is rotatable in a vertical plane in response to starting of an electric motor as a result of depression of a trip which is mounted in the housing of the slicing machine. The trip can be depressed only when a detachable guard for the knife is held in an intermediate position in which the guard and an abutment for the foodstuff to be sliced define a gap wide enough for movement of the foodstuff into the range of the rotating knife. The guard causes a spring-biased blocking device to prevent depression of the trip when the guard is shifted to a position in which it cooperates with the abutment to prevent access to the knife as well as when the guard is actually detached or is held in a position in which it is detachable from the housing.
    Type: Grant
    Filed: October 26, 1984
    Date of Patent: July 8, 1986
    Assignee: Robert Krups Stiftung & Co. KG
    Inventor: Norbert Flammann
  • Patent number: 4574669
    Abstract: A power sheet punching apparatus is provided in which a reversing drive operates initially to drive punches through a stack of sheets and thereafter to reverse direction of the drive to withdraw the punches from the sheets. Should the drive be insufficient to drive the punches through the sheets and a jam occurs, an automatic timer operates to thereafter stop the drive and reverse the drive to withdraw the punches from the sheets, thereby providing an automatic non-jamming punch mechanism.
    Type: Grant
    Filed: May 15, 1984
    Date of Patent: March 11, 1986
    Assignee: General Binding Corporation
    Inventors: Alfredo J. Vercillo, Roger M. Scharer
  • Patent number: 4567800
    Abstract: A punching and shearing machine in which a single hydraulic cylinder (1) operates alternatively the punch or the shear of the machine. When the punch is operative, a manually operated eccentric lever (16) blocks the shear carrying member (8) so that the stem (6) of the piston in the hydraulic cylinder (1) causes motion of the punch carrying member (3). If, on the other hand, the shear is to be operated, another manually operated eccentric lever (14) blocks the punch carrying member (3), so that the external part of the hydraulic cylinder, which is connected to the shear carrying member (8), causes the motion of the shear carrying member only. Safety micro-switches are provided to interrupt the hydraulic circuit controlling the cylinder (1), if the eccentrics (14, 16) are both free or both are blocking a tool carrying member.
    Type: Grant
    Filed: January 11, 1984
    Date of Patent: February 4, 1986
    Assignee: Omera S.p.A.
    Inventor: Flavio Carboniero
  • Patent number: 4558616
    Abstract: The present invention relates to a punch press having upper and lower punching tools to punch a workpiece, a workpiece positioning device to move and position the workpiece, a lower tool support member on which the lower punching tool is detachably mounted, and a slide base on which the tool support member is slidably mounted. The boundary surfaces between the tool support member and the slide base are inclined to allow the lower tool to be obliquely lowered away from the workpiece positioning device.
    Type: Grant
    Filed: November 3, 1983
    Date of Patent: December 17, 1985
    Assignee: Amada Company, Limited
    Inventor: Katsuyoshi Sakamoto
  • Patent number: 4555966
    Abstract: A punch press has a punching tool assembly removably coupled to the ram, and it carries a plurality of punching pins which are individually selectable for a punching operation. A rotatable cam moves the selected punch pin from a retracted position in the tool assembly to an operative punching position, and the cam is driven by a retractable drive mechanism which is movable into engagement with the rotatable cam to effect such rotation and retracted to an inoperative position, by a moving means. Control means is provided to effect operation of the moving means and of the drive mechanism, and is operable to effect precise rotation of the cam member.
    Type: Grant
    Filed: September 5, 1984
    Date of Patent: December 3, 1985
    Assignee: Trumpf GmbH & Co.
    Inventor: Hans Klingel
  • Patent number: 4507994
    Abstract: A device for monitoring the tractive force generated by a cylinder-piston assembly on a member to be moved thereby comprises a spring mounted between the cylinder assembly and the member to be moved such that the force generated by the cylinder-piston assembly is transmitted to the spring to effect movement of a first portion thereof with respect to a second portion thereof. An actuatable switch comprises the first switching element mounted for movement with the first portion of the spring and a second switching element fixedly mounted to the second portion of the spring, the two switching elements configured to actuate the switch when a predetermined path of travel of the first portion of the spring is exceeded.
    Type: Grant
    Filed: May 9, 1983
    Date of Patent: April 2, 1985
    Assignee: Jagenberg AG
    Inventor: Wolfgang Meurer
  • Patent number: 4499804
    Abstract: A safety device for a meat slicer includes a guide bar attached to a holding plate and a lock pin which is pressed by the guide bar. The lock pin and the guide bar are slidably fitted in a first blind hole formed in a guide block. A double latching mechanism, comprising a lock bar and an actuator, is engaged with the lock pin for controlling a switch which controls a driving circuit for the slicer, and the switch is actuated by the actuator.
    Type: Grant
    Filed: March 15, 1983
    Date of Patent: February 19, 1985
    Assignee: Hitachi Koki Haramachi Works, Ltd.
    Inventor: Mutsumi Takeda
  • Patent number: 4466317
    Abstract: A method of and apparatus for controlling the movement of a workpiece to be processed in a punch press is disclosed in which after the workpiece is processed by contact of a ram on the upper tool of the press and the ram is momentarily out of contact with the upper tool, the recontact of the ram and upper tool is detected and then the processed workpiece is moved out of the processing position. In addition, the apparatus detects when the ram has returned to the proximity of the top dead center of the eccentric shaft which drives the ram and when the processing of the workpiece has been completed. The apparatus is also provided with a monitoring system which detects a malfunction in the control apparatus.
    Type: Grant
    Filed: August 12, 1982
    Date of Patent: August 21, 1984
    Assignee: Amada Company Limited
    Inventor: Nobuyuki Ikeda
  • Patent number: 4463636
    Abstract: The trimming apparatus and fixture for holding a PC board prior to and during trimming of an upper surface of the PC board utilizes a trimming blade rotated by a variable speed motor. This apparatus includes X and Y motion mechanism moved by hand grips that are spaced apart and cooperate with push button switches providing a safety control circuit. The X and Y motion mechanism employs linear ball bushings mounted and movable on hardened steel shafts. Removable holding fixtures are employed to hold and retain the PC boards during trimming. One holding fixture is used for PC boards that are not warped and not likely to warp. This fixture holds the PC board on three sides and a quick acting cam clamp is actuated to retain and release a PC board. Another fixture is adapted to hold and retain a PC board that is warped or likely to warp. Vacuum is used with a plurality of standoffs to establish the desired holding plane of this PC board.
    Type: Grant
    Filed: February 25, 1982
    Date of Patent: August 7, 1984
    Assignee: Martin G. Heller
    Inventors: Martin G. Heller, Edward Pecha, Douglas Smith, Joel Rudder
  • Patent number: 4428263
    Abstract: A high volume food load slicing machine comprising a pair of loaf feed belt conveyors that continuously advance a food loaf along a downwardly inclined path through a collar into a slicing station at which a rotating and orbiting knife slices the load includes a variable speed knife rotation drive independent of the main drive that orbits the knife and drives the loaf conveyors. A hydrostatic speed variator in the drive connection for the conveyors, with speed corrections made by a stepper motor, affords precision control of slice thickness. A split collar and associated sensor afford continuous sensing of the loaf cross section to provide effective slice thickness correction; the collar is of molded machinable resin so that the knife can cut a working surface on the collar to a precise contour. The collar includes vacuum means to hold the butt end of a loaf for slicing.
    Type: Grant
    Filed: October 8, 1981
    Date of Patent: January 31, 1984
    Assignee: Formax, Inc.
    Inventors: Scott A. Lindee, Glenn A. Sandberg
  • Patent number: 4397206
    Abstract: A food slicer having a rotatable circular knife and a hopper releasably mounted on a carriage which is movable from an initial position towards and across the knife to cut food on the hopper into slices. A gauge plate is provided to adjust the thickness of cut as the hopper moves the food past the knife and a safety device is incorporated to prevent the hopper being removed from the carriage unless it is at its initial position. The safety device comprises a latch on the carriage holding the hopper thereon and a release mechanism engagable with the latch as the hopper is moved to its initial position to release it from the carriage.
    Type: Grant
    Filed: June 4, 1981
    Date of Patent: August 9, 1983
    Assignee: Lan-Elec Limited
    Inventor: Ferenc L. Czala
  • Patent number: 4297928
    Abstract: The invention relates to a sawing machine of the type comprising a horizontal workpiece support table (1) presenting a straight longitudinal slot (2) defining a cutting line, a sawing tool (4) mounted on a carriage (6) reciprocably movable along a path parallel to and beneath the cutting line, and a longitudinal pressure bar (3) arranged above the workpiece support table (1) which pressure bar (3) extends along the whole length of the cutting line and can be raised and lowered with respect to the said workpiece support table (1) so as to be capable of blocking thereon the workpiece (P) to be sawed. In the sawing machine there is provided a first safety device, consisting of a protective apron extending along both sides of the cutting line, the protective apron being formed by a plurality of slats (10) hingedly mounted, swinging movement through a predetermined angle of oscillation, on longitudinal apron rods (7).
    Type: Grant
    Filed: May 28, 1980
    Date of Patent: November 3, 1981
    Assignee: Giben Impianti S.p.A.
    Inventor: Gino Benuzzi
  • Patent number: 4292868
    Abstract: High-speed spooling machines for yarn or thread are subject to the difficulty that, if the yarn or thread should break between a yarn cleaning, that is, size sensing and cutting apparatus and the takeup spool, stray remnant filamentary pieces may occur due to operation of the cutter apparatus since the thread size sensing apparatus may provide an erroneous "cut" signal upon absence of any thread in the sensing field. To prevent such operation, a thread sensing element is interposed in the path of the thread being spooled which, upon break of thread, will provide a "no tension" signal which will be below a predetermined threshold level. This signal is then used to inhibit operation of the cutter, regardless of the output of the thread size sensing element.
    Type: Grant
    Filed: February 27, 1980
    Date of Patent: October 6, 1981
    Assignee: Maschinenfabrik Schweiter AG
    Inventor: Hermann Werffeli
  • Patent number: 4261399
    Abstract: Disclosed is apparatus for cutting piling, trees and the like, provided with means permitting the apparatus to be placed about a pile or the like by moving it generally normal to the longitudinal axis of the pile. Specifically, the apparatus comprises longitudinal frame members carrying at one end a driven blade and at the other end a stationary blade or anvil. The stationary blade is mounted on an end cross member, one end of which is pivotally secured to one of the longitudinal frame members and the other end of which is adapted for locking to the other of the members. By pivoting the end member carrying the stationary blade upwardly or out of the general plane of the frame, the device may be opened up so that it may be slipped about a piling or tree, without having to be lowered thereabout as has heretofore been required.
    Type: Grant
    Filed: May 24, 1979
    Date of Patent: April 14, 1981
    Assignee: Lummus Industries, Inc.
    Inventors: James B. Hawkins, Frank W. Carpenter, Robert E. Lange
  • Patent number: 4171735
    Abstract: A safety device for a press and the like machinery includes a safety deflector surrounding a tool carriage reciprocable along a path with respect to a fixed frame. The safety device also includes a limit switch associated with a door that defines part of the safety deflector. First and second contactless switches are located adjacent a work supporting surface and respectively sense the position of opposite surfaces of the workpiece to insure that the workpiece is within limits of the work supporting surface and the safety deflector. The switches are in a circuit leading to a machine clutch for the tool carriage to prevent operation when the door is open or either surface of the workpiece is outside prescribed limits of the deflector and the support surface.
    Type: Grant
    Filed: October 11, 1977
    Date of Patent: October 23, 1979
    Assignee: Rolf Peddinghaus
    Inventors: Jochen Zuhlke, Hans J. Mesek
  • Patent number: 4085637
    Abstract: An apparatus for cutting scrap strip received from a press or the like has a cutting member driven in reciprocating movement by an air cylinder operatively connected thereto, the cutting member cooperating with a die member to cut scrap strip as desired. A solenoid controlled valve is connected to the air cylinder and is operable to control air flow into and out of the cylinder whereby movement of the cutting member is effected. Control means is connected in circuit relation with the valve and a rotating shaft of the press providing scrap strip and is responsive to rotation of the shaft to control the position of the valve. The interval between successive actuations of the cutting member may be preset to correspond to a desired time interval or a specific number of cycles of the shaft. A manual control connected in circuit relation with the valve is operable to actuate the cutting member independently of periodic movement of the press.
    Type: Grant
    Filed: May 10, 1976
    Date of Patent: April 25, 1978
    Assignee: Plainville Special Tool, Inc.
    Inventor: Walter L. Michaels
  • Patent number: 3962943
    Abstract: A cable safety apparatus for use in a cable feeding system, comprising a pulley rotatably mounted on a frame, the pulley supporting the cable in a manner to provide a back pressure thereon. A locking member is slidably connected to the frame with a spring interposed therebetween, and the apparatus is suspended to a non-moving support structure by attaching the support end of the locking member to an external structure. The locking member and spring form a spring assembly that has locking engagement with a pivotable cutter blade that is biased to be in cutting engagement with the cable when the spring assembly is moved into clearing relationship with the cutter blade.
    Type: Grant
    Filed: August 14, 1974
    Date of Patent: June 15, 1976
    Inventor: Burl A. Allen