US3716879A - Manually actuatable tool - Google Patents

Manually actuatable tool Download PDF

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Publication number
US3716879A
US3716879A US00155026A US3716879DA US3716879A US 3716879 A US3716879 A US 3716879A US 00155026 A US00155026 A US 00155026A US 3716879D A US3716879D A US 3716879DA US 3716879 A US3716879 A US 3716879A
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US
United States
Prior art keywords
lever
shear plate
shear
pivot pin
fulcrum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00155026A
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English (en)
Inventor
A Boyajian
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAYAN Ltd
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BAYAN Ltd
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Filing date
Publication date
Application filed by BAYAN Ltd filed Critical BAYAN Ltd
Application granted granted Critical
Publication of US3716879A publication Critical patent/US3716879A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21F—WORKING OR PROCESSING OF METAL WIRE
    • B21F1/00—Bending wire other than coiling; Straightening wire
    • B21F1/002—Bending wire other than coiling; Straightening wire by means of manually operated devices, e.g. pliers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D29/00—Hand-held metal-shearing or metal-cutting devices
    • B23D29/02—Hand-operated metal-shearing devices
    • B23D29/023—Hand-operated metal-shearing devices for cutting wires

Definitions

  • ABSTRACT A tool for cutting or bending wires, rods, bolts and the like embodying as components shearing instrumentalities and bending instrumentalities operable by a common pair of pivotally connected rigid handles.
  • the same forceapplying member in conjunction with the pivot axis of the levers providesfor applying a bending force to a wire or rod.
  • the compound tool of this invention embodies the same instrumentalities and principle of operation as the aforesaid'tool, redesigned to simplify construction for production purposes.
  • the tool embodies in combination cutting instrumentalities andbending instrumentalities, the cutting instrumentalities comprising afirst rigid shear plate containing at one end a plurality of cuttingedges arranged in a predetermined pattern with respect to a common center, an elongate handle fixed to the other end, a second rigid shear plate containing at one end a corresponding numberof cutting edges arranged in a corresponding predetermined relation with respect to a common center, said second shear plate containing at its opposite end a cam slot, a fastener pivotally connecting the twoshear plates in face-toface shearing relation to each other anda force-apply? ing element for turning said second.
  • shear plate in shearing relation-to the first shear plate comprising a lever pivotally mounted on the first shear plate adjacent the cam slot at said opposite end of said shear plate for rotationabout an axis'parallel to the axis of pivotal movement of the shearplates, a cam element fixed to the lever in radially spaced relation to said pivot axis thereof such as to occupy.
  • said cam slot in said second shear plate and a handle fixed to the lever in radial relation to its pivot axis and in angularly spaced relation to said cam roller such that angular movement of the lever about its pivot by a force applied to said handle will swing the second shear plate relative to the first shear plate to displace all of the cutting edges of the two shear platesin shearing relation to each other and said bending instrumentalities comprising said cam element on said lever which comprises a force-applying means, said pivot which comprises a fulcrum, and a part fixed to the first plate such that in one position of the lever'a straight line tangent to the part and to the cam element is spaced from the fulcrum a distance at least as great as the diameter of the largest wire to be bent so that an unbent wire may be inserted between the part and the cam element atone side and the fulcrum at the other, said part being operable to hold the wire while it is bent around the fulcrum.
  • FIG. 1 is a plan view of the compound tool with-the operating arms shown in the shearing position
  • FIG. 2 is a fragmentary plan view showing the shearing instrumentalities in a position to receive a part to be cut;
  • FIG. 3 is an elevation of FIG. 2;
  • FIG. 4 is a fragmentary plan view showing the shearin'g instrumentalities disabled and the bending instru- 1.
  • FIG. 5 is a fragmentary plan view showing the bending instrumentalities in a position following bending
  • FIG. 6 is a section taken on the line 6-6 of FIG. 1 showing a pair of cutting edges in registering relation;
  • FIG. 7 is an elevation corresponding to FIG. 6 showing the same cutting edges offset
  • FIG. 8 is a fragmentary section taken on the line 8- hole and holes 24 of a still smaller diameter still further from the pivot hole. Some of these holes are of smooth bore and others are threaded.
  • the end of the shear plate 16 is arcuate, having as its radius the pivot hole 18 and this arcuate portion contains one or more U- shaped notches 28.
  • the shear plate 16 has at its opposite ends one of the two rigid handles 14a.
  • the shearing instrumentalities comprise a second shear plate which also contains at one end a pivot hole 32 around which there are disposed in concentric relation holes 34, 36 and 38 corresponding in spacing from each other and in radial distance from the pivot hole to the spacing of the holes in the first shear plate and the radial distances of the holes in the first shear plate from the pivot hole.
  • the shear plate 30 like the shear plate 16 has also an arcuate edge, the radius of which is at the center of the pivot hole, corresponds to the radius of the arcuate edge of the shear plate 16 and contains U-shaped notches 40 corresponding to those in the shear plate 16.
  • the two shear plates are mounted face-to-face and pivotally connected to each other by a pivot pin 42 comprising a bolt 44 having a head 46 on one end and at its other end a threaded portion 48 on which is threaded a nut 50 together with a locking element to prevent the nut from working free by manipulation of the tool.
  • a cam slot 52 by means of which the shear plate 30 is adapted to be oscillated relative to the shear plate 16. Oscillation is effected by a lever 54 pivotally mounted on the shear plate 16 in spaced parallel relation thereto so as to overlie the distal end of the shear plate 16 by means of a pivot pin 56 comprising a bolt 58 having a head 60 thereon which is inserted through a hole 62 in the lever, through a spacer element 64 situated between the lever and the shear plate 16 and through the shear v plate 16 and has on its projecting end a threaded portion 66 on which there is threaded a nut 68.
  • the spacer element 64 contains a peripheral'groove 70.
  • the axis of the pivot pin 56 for the lever is spaced from the axis of the pivot pin 42 for the shear plates a distance which is
  • the lever 54 has secured to one end the other handle 5 14b of the pair of handles by means of which the tool is operated, the handle 14b being situated radially with respect to the pivot pin 56 and at its other end a cam element 72 of a diameter such as to fit within the cam slot 52 in the shear plate 30.
  • the cam element 72 is rotatably supported on the lever 54 by a pin 74 having a head 76 thereon which sets into a recess 78 in the cam element 72 and a shank 80 which extends through the cam element and through the lever 54 which contains a circular groove 82 adapted to receive a spring lock washer 84.
  • the supporting pin 74 for the cam element 72 is located at a radial distance from the axis of the pin 56 and at an angular distance from the handle 14b such as to provide for a high mechanical advantage when the handle is turned about the axis of the pivot pin 56 to apply a very high shear force to the shear plate 30.
  • a stop screw 86 is mounted on the lever 54 to determine the position of the shear plates at their position of registration.
  • the stop screw 86 is threaded into a threaded, hol 88 in the lever at a radial distance form the axis of the pin 56 which is slightlygreater than the radial distance of the pin 74 which supports the cam element and comprises a screw bolt 89 having a head 90 thereon screwed into the threaded hole 88 in the lever so that its inner end extends through the lever into a position such as to engage an edge of the shear plate 30 when the handles of the tool are swung to their wide open position.
  • the stop screw 86 by engagement with the edge of the shear plate 30 limits the movement of the shear plate 30 to a position of registration of the shearing edges therein with the shearing edges in the shear plate 16, and at the same time prevents disengagement of the cam element from the cam slot.
  • a stop post 92 fixed tothe shear plate 16 rearwardly of the pivot pin 56 with respect to the shear plate 30 and projecting upwardly therefrom into the plane of the lever provides for limiting .the proximity of the handles relative to each other in their shearingposition thus preventing bringing the handles so close together as to pinch or crush the operator's fingers.
  • the component parts of the tool so far related in describing the shearing action comprise also the components of the bending instrumentality and these parts are the pin 56 for the lever 54 which comprises a fulcrum, the cam element 72 which operates as a forceapplying member for effecting bending and the stop post 92 which operates as a support for the part which is to be bent.
  • the use of the tool for bending is provided for by moving the shear plate 30 to an out of the way position (FIG.
  • the tool may now be used for bending of a wire by inserting the wire W between the cam element 72 and the pivot pin 56 for the lever from the side of the stop post 92 so that the position Wa to be bent extends beyond the pivot pin 56 toward the distal end of the tool and so that the portion Wb to remain unbent extends rearwardly from the pivot pin along the near side of the stop post.
  • the tool may be made in different sizes with different leverages to enable cutting and bending parts of different kind and different size, the shear plates being comprised of rigid plate stock of soft steel.
  • the shear plate 16 and the lever 54 at the ends to which the handles 14a, 14b are attached are reduced to provide tenons 40 of substantially rectangular cross-section for receiving the handles which are comprised of bars of tubular stock of rectangular configuration forced onto the tenons 94 and spot welded thereto.
  • the distal ends of the handles are provided with non-metallic handle grips 96 to protect the hands of the operator from injury.
  • the tool as thus constructed, is extremely easy to operate both for the purposes of shearing and for bending, can be easily converted from one use to the other and vice versa without disassembling any of the parts and hence without loss of the parts when changing from one operation to the other, is attractive in appearance and is adapted to simple manufacturing operations.
  • a tool for cutting or bending stiff wires, bolts, rods and the like said tool embodying, in combination, cutting means and bending means, said cutting means comprising a first rigid shear plate containing at one end a plurality of cutting edges arranged in a predeter mined pattern with respect to a common center, an
  • a second rigid shear plate containing at one end a corresponding number of cutting edges arranged in a corresponding predetermined relation with respect to a common center, said second shear plate containing at its opposite end a cam slot, a pin pivotally connecting the two shear plates in face-to-face shearing relation to each other and a force-applying element for turning said second shear plate in shearing relation to said first shear plate comprising a lever, a pin pivotally mounting the lever on the first shear plate adjacent the cam slot at said opposite end of said second shear plate for rotation about an axis parallel to the axis of pivotal movement of the shear plates, a cam element mounted on the lever in radially spaced relation to said pivot pin of the lever such as to occupy said cam slot in said second shear plate, and a handle fixed to the lever in radial relation to the pivot pin of the lever and in angularly spaced relation to said cam element such that angular movement of the lever about its pivot
  • a tool according to claim 1 wherein certain of the cutting edges are constituted by holes perpendicular to the shear plates which in one position of the plates are aligned so that a part to be cut may be inserted through said holes and which in another position are displaced relative to each other such as to have cut through the part.
  • a tool according to claim 1 wherein certain of the cutting edges are constituted by holes arranged in concentric rows with respect to the pivot pin connecting the shear plates with the holes in the several rows decreasing in size from the row closest to said pivot pin to those in the row furthest from the pivot pin.
  • shear plates have arcuate portions of corresponding radius rotatable about the axis of the pivot pin pivotally connecting the shear plates, said arcuate portions containing notches which in one position of the lever are in alignment and in another position displaced with respect to each other, said notches when in alignment being adapted to receive a part for an application of a shearing force thereto.
  • a tool according to claim 1 comprising a part movable with the lever as the handles are moved apart to bring the shear plates into a position of alignment of the cutting edges therein to limit movement of the lever beyond said position.
  • a tool according to claim 1, wherein the pivot pin for the lever and constituting the fulcrum has a peripheral groove of substantially half-circular crosssection.
  • a tool according to claim 1 wherein the length of the second shear plate from its pivot pin to its distal end is less than the distance between its pivot pin and the pivot pin of the lever so that the second shear plate is free to oscillate relative to the pivot pin of the lever, and said cam is at a radial distance from the pivot pin of said lever such as to be movable by rotation of the lever along the cam slot to effect oscillation of the second shear plate and to be disengaged from the cam slot by rotation of the lever beyond a predetermined position, and a limit pin carried by the lever operable by engagement with the second shear plate to limit rotation of the lever beyond said predetermined position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Shearing Machines (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Wire Processing (AREA)
US00155026A 1971-06-21 1971-06-21 Manually actuatable tool Expired - Lifetime US3716879A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US15502671A 1971-06-21 1971-06-21

Publications (1)

Publication Number Publication Date
US3716879A true US3716879A (en) 1973-02-20

Family

ID=22553835

Family Applications (1)

Application Number Title Priority Date Filing Date
US00155026A Expired - Lifetime US3716879A (en) 1971-06-21 1971-06-21 Manually actuatable tool

Country Status (6)

Country Link
US (1) US3716879A (enExample)
JP (2) JPS4853385A (enExample)
CA (1) CA957146A (enExample)
FR (1) FR2143113B1 (enExample)
GB (1) GB1373855A (enExample)
ZA (1) ZA724142B (enExample)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD263110S (en) 1979-12-10 1982-02-23 Boyajian Alfred Z Combined wire and bolt pliers
USD263552S (en) 1979-12-10 1982-03-30 Boyajian Alfred Z Combined wire and bolt pliers
USD341303S (en) 1990-06-01 1993-11-16 Alba Industries Limited Crimping tool
USD355830S (en) 1992-04-24 1995-02-28 Burndy Corporation Crimping tool handle
US6255575B1 (en) * 2000-04-11 2001-07-03 John Pearse String winding and trimming device
US6609302B2 (en) * 2002-01-31 2003-08-26 David Welker Bolt cutting tool
EP1201194A3 (de) * 2000-10-27 2003-10-08 Wenzler Medizintechnik GmbH Chirurgische Schneidzange
CN100389008C (zh) * 2006-01-19 2008-05-21 徐森良 强力咬口钳
US20100244349A1 (en) * 2009-03-25 2010-09-30 Moutafis Timothy E Clamp
CN102000873A (zh) * 2010-12-11 2011-04-06 张家港天达工具有限公司 螺杆剪
WO2012117096A1 (de) * 2011-03-02 2012-09-07 Alexander Merz Zange zum schneiden von werkstücken
CN104033316A (zh) * 2014-06-12 2014-09-10 国家电网公司 防止双联臂上抬的剪断销组件
CN104096729A (zh) * 2014-06-09 2014-10-15 苏州创丰精密五金有限公司 多边形折弯治具组
CN112536399A (zh) * 2020-12-25 2021-03-23 江苏亚盛金属制品有限公司 一种钢丝绳的切线加工装置
CN113993645A (zh) * 2019-06-21 2022-01-28 空中客车运作有限责任公司 用于拆卸工件组件中的两件式连接件的方法
US20240197379A1 (en) * 2022-12-14 2024-06-20 Sg, Llc In situ rod cutters
US12616512B2 (en) 2022-08-17 2026-05-05 Symmetry Medical Manufacturing, Inc. Surgical rod cutter-bender assembly

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6225172U (enExample) * 1985-07-30 1987-02-16
JPS62251033A (ja) * 1986-04-22 1987-10-31 Ishihara Kikai Kogyo Kk 携帯用曲げ切断兼用機
JPH0623381Y2 (ja) * 1988-03-22 1994-06-22 アンリツ株式会社 リード切断治具
DE102006048915B3 (de) * 2006-10-17 2008-01-03 Christoph Lamowski Rohr-Biegevorrichtung
CN104070090B (zh) * 2014-05-29 2015-11-25 浙江飞越机电有限公司 带角度定位的杠杆式弯管器及弯管方法
CN106340824B (zh) * 2016-09-30 2018-01-19 国网山东省电力公司商河县供电公司 一种安全省力的配电线路拉线弯折成形结构
CN106384969B (zh) * 2016-09-30 2018-05-25 国网山东省电力公司商河县供电公司 一种适用于大弯折力的塔杆拉线弯折装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US401308A (en) * 1889-04-09 Nippers
US632267A (en) * 1899-03-30 1899-09-05 J A Rene Shears.
AT17406B (enExample) * 1903-04-19 1904-08-25 Johann Ockermueller
US2437433A (en) * 1946-04-12 1948-03-09 Eric P Mcnair Cable bending pliers
US3273238A (en) * 1964-12-10 1966-09-20 Kuhbier Carl Pliers having a camming lever member trapped between jaw members

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US401308A (en) * 1889-04-09 Nippers
US632267A (en) * 1899-03-30 1899-09-05 J A Rene Shears.
AT17406B (enExample) * 1903-04-19 1904-08-25 Johann Ockermueller
US2437433A (en) * 1946-04-12 1948-03-09 Eric P Mcnair Cable bending pliers
US3273238A (en) * 1964-12-10 1966-09-20 Kuhbier Carl Pliers having a camming lever member trapped between jaw members

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD263110S (en) 1979-12-10 1982-02-23 Boyajian Alfred Z Combined wire and bolt pliers
USD263552S (en) 1979-12-10 1982-03-30 Boyajian Alfred Z Combined wire and bolt pliers
USD341303S (en) 1990-06-01 1993-11-16 Alba Industries Limited Crimping tool
USD355830S (en) 1992-04-24 1995-02-28 Burndy Corporation Crimping tool handle
US6255575B1 (en) * 2000-04-11 2001-07-03 John Pearse String winding and trimming device
EP1201194A3 (de) * 2000-10-27 2003-10-08 Wenzler Medizintechnik GmbH Chirurgische Schneidzange
US6609302B2 (en) * 2002-01-31 2003-08-26 David Welker Bolt cutting tool
CN100389008C (zh) * 2006-01-19 2008-05-21 徐森良 强力咬口钳
US20100244349A1 (en) * 2009-03-25 2010-09-30 Moutafis Timothy E Clamp
US8387963B2 (en) * 2009-03-25 2013-03-05 Belmont Instrument Corporation Clamp
CN102000873A (zh) * 2010-12-11 2011-04-06 张家港天达工具有限公司 螺杆剪
WO2012117096A1 (de) * 2011-03-02 2012-09-07 Alexander Merz Zange zum schneiden von werkstücken
US9457414B2 (en) 2011-03-02 2016-10-04 Alexander Merz Pliers for cutting workpieces
CN104096729A (zh) * 2014-06-09 2014-10-15 苏州创丰精密五金有限公司 多边形折弯治具组
CN104033316A (zh) * 2014-06-12 2014-09-10 国家电网公司 防止双联臂上抬的剪断销组件
CN113993645A (zh) * 2019-06-21 2022-01-28 空中客车运作有限责任公司 用于拆卸工件组件中的两件式连接件的方法
CN112536399A (zh) * 2020-12-25 2021-03-23 江苏亚盛金属制品有限公司 一种钢丝绳的切线加工装置
US12616512B2 (en) 2022-08-17 2026-05-05 Symmetry Medical Manufacturing, Inc. Surgical rod cutter-bender assembly
US20240197379A1 (en) * 2022-12-14 2024-06-20 Sg, Llc In situ rod cutters

Also Published As

Publication number Publication date
CA957146A (en) 1974-11-05
FR2143113A1 (enExample) 1973-02-02
ZA724142B (en) 1973-03-28
FR2143113B1 (enExample) 1973-07-13
JPS5331279A (en) 1978-03-24
JPS568726B2 (enExample) 1981-02-25
GB1373855A (en) 1974-11-13
JPS4853385A (enExample) 1973-07-26

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