US3618612A - Plier-type cutting tools - Google Patents

Plier-type cutting tools Download PDF

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Publication number
US3618612A
US3618612A US815965A US3618612DA US3618612A US 3618612 A US3618612 A US 3618612A US 815965 A US815965 A US 815965A US 3618612D A US3618612D A US 3618612DA US 3618612 A US3618612 A US 3618612A
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US
United States
Prior art keywords
arm
lever
pair
arms
tool
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
US815965A
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English (en)
Inventor
David F Ahn
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.)
Arnolds Veterinary Products Ltd
Original Assignee
Arnolds Veterinary Products Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10104261&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US3618612(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Arnolds Veterinary Products Ltd filed Critical Arnolds Veterinary Products Ltd
Application granted granted Critical
Publication of US3618612A publication Critical patent/US3618612A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01L—SHOEING OF ANIMALS
    • A01L15/00—Apparatus or use of substances for the care of hoofs
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61D—VETERINARY INSTRUMENTS, IMPLEMENTS, TOOLS, OR METHODS
    • A61D1/00—Surgical instruments for veterinary use
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/02—Jaws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears

Definitions

  • the present invention relates to plier-type tools having a pair of operating heads which are movable relative to one another so as to grip or cut an article disposed between said heads.
  • the invention relates to a cutting tool for veterinary use which can be operated one-handedly.
  • the lever means preferably comprises a lever pivotally attached to the first arm between the second. arm and the first operating head, and a connecting rod pivotally attached to the second arm between the first arm and the second operating head and pivotally attached to the lever at a point spaced from the first arm.
  • the operating arm may extend laterally from the lever between the first arm and the connecting rod and preferably is disposed on the opposite side of the first arm to the second operating head.
  • Spring means may be provided to bias the second arm into its inoperative position and thereby facilitate easy return of the second arm from its operative to its inoperative position.
  • said spring means may comprise a'helical tension spring operating between the first arm and the lever means.
  • the operating heads may be detachably mounted on the first and second arms so as to facilitate the replacement of said heads.
  • the operating heads may be jaws formed so as to abut of substantially abut to provide pincer or crimping action.
  • the tool has been primarily designed as a cutting tool intended for the removal of overgrowth from the feet of farm animals, for example horses and cattle, and accordingly the operating heads of such a cutting tool have cutting edges which abut to provide cutting action.
  • the operating heads of such a cutting tool may have chisellike jaws extending normally from the end of the relevant arm towards the other arm. These chisellike jaws may be arcuate forming an arc of a circle centered on the point of attachment of the second arm to the first arm.
  • the FIGURE is a side view, of a veterinary cutting tool generally indicated at 1 and comprising a first elongate arm 2 having an arcuate jaw 3 extending forwardly from its upper end.
  • THis jaw 3 extends substantially normally to the first arm and terminates at its forward end in a chisellike-cutting edge 4.
  • the arm 2 has an elongate slot 5 extending longitudinally therethrough from the rearward to the forward face and the arm terminates below said slot 5 in a handle portion 6 shaped to facilitate gripping of the tool by an operator.
  • a second elongate arm 7 is pivotally mounted for rotational movement in a forward-rearward direction at its lower end in the slot 5 at a point towards the lower end of this slot.
  • the arm 7 has an arcuate jaw 8 extending rearwardly from its upper end, which jaw extends substantially normally to said arm and terminates at its rearward end in a chisellike-cutting edge 9,
  • the arrangement of the jaws 3 and 8 is such that said jaws both constitute arcs of a circle having its center at the point of attachment of the arm 7 to the arm 2.
  • a T-shaped lever 10 having an elongate 'shaftportion 11 and a crosspiece portion 12 is pivotally mounted for rotatable movement in a forward-rearward direction at the forward end of the crosspiece 12 in the slot 5 at a point spaced upwardly from the point of attachment of arm 7, the arrangement being such that the shaft portion 11 extends downwardly when the leverl0 extends rearwardly of arm 2.
  • An elongateconnecting rod 13 is formed at its first end with a yoke '14 which fits about the rearward end of the crosspiece l2 and to'which' this crosspiece 12 is pivotally connected for relative rotational movement in a forward-rearward direction.
  • the connecting rod 13 extends forwardly through the slot 5 and is externally threaded at its forward end. This forward end is received in a correspondingly internally'threaded bore in a rearward portion of a yoke 'member15, which yoke member 15'accommodates the arm 7 between its forward limbs andis *pivotally'connected to said arm 7 for rotational movement in the forward-rearward direction.
  • the provision of thethr'eaded cooperating portions of the connecting rod 13 and of the yoke member 15 enables'the effective length of the connectingrod 13 to be varied slightly to allow for resharpening of the cutting edges 4and 9.
  • the relative arrangement of the lever 11 and connecting rod 13 is such that, when cutting edges 4 and 9 abut, the connecting rod 13 is substantially parallel to the crosspiece 12.
  • the second arm 7 is biased into a position where cutting edges 4 and 9 are spaced apart by means of a helical tension spring 16 actingbetween the arm 2 at a point above the pivotal mounting of the lever 10 and said lever 10 at the rearward end of the crosspiece l2.
  • the handle portion 6 and the shaft portion 11 are held in a hand of an-operator'of the tool. Tightening of the grip by the operator causes the said handle portion 6 and shaft portion 11 to move together thus causing rotation of the lever 10 about the pivotal mounting thereof, which movement in turn causes the connecting rod 13 to draw arm 7 about is pivotal mounting.
  • the arrangement of the lever 10 and the connecting rod 13 is such that, as the shaft portion ll is drawn nearer the handle portion 6, the ratio of angular movement of said shaft portion to angular movement of the second arm increases. This permits rapid initial approach of the cutting edges 4 and 9 and increased leverage as the cutting edges approach one another. This is desirable since the structure of the horn in the feet of horses etc. is such that its hardness increases markedly towards the outer surface of the horn.
  • the mechanical advantage provided by the tool therefore matches the resistance Offered by the horn at all points during the travel of the jaws.
  • a hand tool having a pair of arms hinged together at a pivot, each of said arms carrying one of a pair of tool heads, one of said arms having a rigid extension beyond said pivot forming the first of a pair of handles; a pair of lever arms pivoted together at an acute angle and each pivoted to a respective one of said pair of arms, one of said lever arms being adjustable in length, the other of said lever arm's having the second of said pair of handles rigidly attached thereto; whereby gripping together of said pair of handles closes said tool heads together and closes the angle between said lever arms thereby providing increasing mechanical advantage as the tool heads close.
  • a hand tool for single-handed operation having a pair of tool heads which are closed together by gripping a pair of handles and opened by releasing said handles, comprising a first arm carrying a first of said tool heads and having a handle portion constituting one of said pair of handles;
  • a connecting rod pivotally attached to the second arm between the pivotal connection of the first arm and the second tool head and pivotally attached at an acute angle to the lever at a point spaced from the first arm so that rotation of the said lever and rod to close the angle therebetween closes said tool heads together;
  • a bias spring mounted between the first arm and the said point of connection of the said lever and rod acting to open the angle between the said lever and r and an operating arm extending from the lever between the pivotal connections of the first arm and of the connecting rod to constitute the second of said pair of handles.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Mechanical Engineering (AREA)
  • Veterinary Medicine (AREA)
  • Environmental Sciences (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Scissors And Nippers (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)
US815965A 1968-04-16 1969-04-14 Plier-type cutting tools Expired - Lifetime US3618612A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1796268 1968-04-16

Publications (1)

Publication Number Publication Date
US3618612A true US3618612A (en) 1971-11-09

Family

ID=10104261

Family Applications (1)

Application Number Title Priority Date Filing Date
US815965A Expired - Lifetime US3618612A (en) 1968-04-16 1969-04-14 Plier-type cutting tools

Country Status (6)

Country Link
US (1) US3618612A (enrdf_load_stackoverflow)
DE (1) DE1918897A1 (enrdf_load_stackoverflow)
FR (1) FR2006293A1 (enrdf_load_stackoverflow)
GB (1) GB1259114A (enrdf_load_stackoverflow)
IE (1) IE32771B1 (enrdf_load_stackoverflow)
SE (1) SE358107B (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4982500A (en) * 1989-11-20 1991-01-08 Five Star Idea, Inc. Instrument for cutting or gripping
US20060089651A1 (en) * 2004-10-26 2006-04-27 Trudeau Jeffrey L Apparatus and method for anchoring a surgical rod
US20080154277A1 (en) * 2004-10-26 2008-06-26 Scott Machalk Tool apparatus for locking a spinal rod in an anchoring device therefor
US20080195155A1 (en) * 2007-02-12 2008-08-14 Jeffrey Hoffman Locking instrument for implantable fixation device
US20080228233A1 (en) * 2007-02-12 2008-09-18 Jeffrey Hoffman Instrument for manipulating spinal implant system
US20090157125A1 (en) * 2007-02-14 2009-06-18 Jeffrey Hoffman Spinal Rod Reducer and Cap Insertion Apparatus
US20090228054A1 (en) * 2008-01-29 2009-09-10 Jeffrey Hoffman Rod Locking Instrument
US20110202096A1 (en) * 2010-02-12 2011-08-18 John White Spinal Rod and Screw Securing Apparatus and Method
US8307557B1 (en) * 2008-12-17 2012-11-13 Rodgers Timothy J Foot operated cutter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3111412A1 (fr) 2020-06-16 2021-12-17 Psa Automobiles Sa Module lumineux destiné à être monté dans un bloc optique pour véhicule automobile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US271038A (en) * 1883-01-23 Hoof-trimmer
US327204A (en) * 1885-09-29 Surgical instrument
US787414A (en) * 1903-07-06 1905-04-18 Joseph L Vacha Pliers.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US271038A (en) * 1883-01-23 Hoof-trimmer
US327204A (en) * 1885-09-29 Surgical instrument
US787414A (en) * 1903-07-06 1905-04-18 Joseph L Vacha Pliers.

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4982500A (en) * 1989-11-20 1991-01-08 Five Star Idea, Inc. Instrument for cutting or gripping
US20060089651A1 (en) * 2004-10-26 2006-04-27 Trudeau Jeffrey L Apparatus and method for anchoring a surgical rod
US20080154277A1 (en) * 2004-10-26 2008-06-26 Scott Machalk Tool apparatus for locking a spinal rod in an anchoring device therefor
US20080195155A1 (en) * 2007-02-12 2008-08-14 Jeffrey Hoffman Locking instrument for implantable fixation device
US20080228233A1 (en) * 2007-02-12 2008-09-18 Jeffrey Hoffman Instrument for manipulating spinal implant system
US20090157125A1 (en) * 2007-02-14 2009-06-18 Jeffrey Hoffman Spinal Rod Reducer and Cap Insertion Apparatus
US8308774B2 (en) 2007-02-14 2012-11-13 Pioneer Surgical Technology, Inc. Spinal rod reducer and cap insertion apparatus
US20090228054A1 (en) * 2008-01-29 2009-09-10 Jeffrey Hoffman Rod Locking Instrument
US8235997B2 (en) 2008-01-29 2012-08-07 Pioneer Surgical Technology, Inc. Rod locking instrument
US8307557B1 (en) * 2008-12-17 2012-11-13 Rodgers Timothy J Foot operated cutter
US20110202096A1 (en) * 2010-02-12 2011-08-18 John White Spinal Rod and Screw Securing Apparatus and Method
US8900240B2 (en) 2010-02-12 2014-12-02 Pioneer Surgical Technology, Inc. Spinal rod and screw securing apparatus and method

Also Published As

Publication number Publication date
FR2006293A1 (enrdf_load_stackoverflow) 1969-12-26
IE32771L (en) 1969-10-16
SE358107B (enrdf_load_stackoverflow) 1973-07-23
IE32771B1 (en) 1973-11-28
DE1918897A1 (de) 1969-11-06
GB1259114A (enrdf_load_stackoverflow) 1972-01-05

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