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US2112873A - Tool - Google Patents

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Publication number
US2112873A
US2112873A US10973436A US2112873A US 2112873 A US2112873 A US 2112873A US 10973436 A US10973436 A US 10973436A US 2112873 A US2112873 A US 2112873A
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US
Grant status
Grant
Patent type
Prior art keywords
spring
lever
jaws
handle
pawl
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
Inventor
Wright Jerauld
Original Assignee
Wright Jerauld
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
Grant date

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12Pliers; 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

Description

April 5, 1938. J wRlGHT 2,112,873

TOOL

Filed Nov. 7, 1936 iNVENTOR BY JEHMZD i/[1y Z ATTORNEY Patented Apr. 5, 1938 UNITED STATES PATENT OFFICE 2 Claims.

(Granted under the act of March 3, 1883, as amended April 30, 1928; 370 0. G. 757) My invention relates to new and useful improvements to a tool of the class comprising relative movable jaws, for gripping or operating upon an object located between them, and handles for 5 relatively actuating the jaws.

An important object of my invention is to pro vide a tool of the class referred to which will permit a wide movement of the jaws for a relatively smaller movement of the handles actuating the Jaws.

A further object of my invention is to provide such a tool that will permit heavy pressure to be exerted upon an object, held between its jaws, by means of the lever action of the handles.

Other objects and advantages of my invention will be apparent during the course of the follow ing description:

In the accompanying drawing, forming a part of this specification, the figure is a side View of a tool embodying my invention.

In the drawing, where for the purpose of illus tration, is shown a preferred embodiment of my invention, the numbers I and 2 represent movable jaws containing opposed gripping edges 3 and 25 l. The edges 3 and 4 may be shaped to any desired form to suit the use to which the tool will be put; for instance, they may be serrated, or they may be squared, or they may be any other shape. The jaw I forms the outer end of a lever 5 which is made integral with a ratchet or curved toothed sector 6 and has a handle I at its opposite end. The jaw 2 forms the outer end of a lever 8 which is attached to the lever 5 with a pivot 9. The lever 8 is slotted to receive the ratchet or toothed sector 6. A leaf spring I is attached to the lever by a screw II and functions to keep the levers 5 and 8 separated. A handle I2 is attached to the lever 8 by a pivot I3 and has a pawl It attached to its inner end at a pivot I5. The pawl I4 is held against a stop I 6 by a leaf spring H. A coil spring I8 is interposed between the lever 8 and the handle I2.

The operation of the tool is as follows: The object to be gripped is inserted between the jaws I and 2 and the handles 1 and I2 are moved towards each other by applying external force. As the spring I0 is weaker than the spring I8 this force applied to the handles 1 and I2 will cause the lever B to swing about the pivot 9 and result in the jaws I and 2 approaching each other. When the edges 3 and 4 of the jaws I and 2 take up against the object to be gripped, the movement about the pivot 9 will cease and the handle I2 will swing about the pivot I3. The resultant motion imparted to the end I2 of the handle I 2 will permit the force of the spring I! to act upon the pawl I4 and to cause the pawl I4 to pass the stop i6 and into engagement with the teeth on the ratchet or sector 6. Further movement of the handle I2 will give a lever movement to the lever 8 with the pawl M as a center.

In order to free the grasped object from be- 5 tween the jaws I and 2, the pressure upon the handle I2 is relieved. This permits the spring I8 to act upon the handle I2 forcing it to swing about the pivot it away from the lever 8 and causes the end carrying the pawl I4 to withdraw the pawl from engagement with the ratchet or toothed sector 6; and on disengagement of the pawl, permits the spring It to act upon the lever 8 thereby forcing it to swing about the pivot 9 and away from the lever 5.

It is to be understood that the form of my invention, herewith shown and described, is to be taken as a preferred example of the same, and the various changes in the shape, size and arrangement of parts may be resorted to, without departing from the spirit of my invention, or the scope of the subject claims.

The invention described herein may be manufactured and used by or for the Government of the United States of America for governmental purposes without the payment of any royalties thereon or therefor.

I claim:

1. A tool comprising two branches constituting jaws at one end and pivoted at the other end, a spring means for separating the two branches, a curved toothed sector so carried by one of the branches as to fit into a slotted portion of the other branch, a handle pivoted to the other branch and carrying an extension beyond the pivot, a spring actuated pawl pivoted on said extension and arranged so that the pawl may be caused to engage the teeth of the curved toothed sector, and a pawl stop for preventing such engagement when it is not desired, and a. spring means for separating this handle from the branch to which it is pivoted.

2. A tool comprising two branches constituting jaws at one end and pivoted at the other end, a spring means for separating the two branches, a curved toothed sector so carried by one of the branches as to fit into a slotted portion of the other branch, a handle pivoted to the other branch and carrying an extension beyond the pivot, a spring actuated means pivoted on said extension and arranged so that it may be brought into engagement with the teeth of the curved toothed sector, and a stop for preventing such engagement when it is not desired, and a spring means for separating this handle from the branch to 55 which it is pivoted.

J ERAUID WRIGHT.

US2112873A 1936-11-07 1936-11-07 Tool Expired - Lifetime US2112873A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US2112873A US2112873A (en) 1936-11-07 1936-11-07 Tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2112873A US2112873A (en) 1936-11-07 1936-11-07 Tool

Publications (1)

Publication Number Publication Date
US2112873A true US2112873A (en) 1938-04-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US2112873A Expired - Lifetime US2112873A (en) 1936-11-07 1936-11-07 Tool

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475866A (en) * 1946-08-02 1949-07-12 B M C Mfg Corp Cam lever actuated pivoted jaw wrench
US3232152A (en) * 1964-10-26 1966-02-01 Wendell S Miller Alternative fulcrum hand tool
WO1989002806A1 (en) * 1987-09-25 1989-04-06 Audun Haugs Pliers device
US5269797A (en) * 1991-09-12 1993-12-14 Meditron Devices, Inc. Cervical discectomy instruments
US6014917A (en) * 1998-07-01 2000-01-18 B!G Ventures, L.L.C. Self-adjusting and/or self-locking pliers
US6378404B1 (en) * 1998-07-01 2002-04-30 Big Ventures, L.L.C. Self-adjusting and/or self-locking pliers
EP1202837A1 (en) * 1999-06-15 2002-05-08 Brett P. Seber Self-adjusting pliers
US20040075205A1 (en) * 2002-10-18 2004-04-22 Joel Marks One hand actuated "C" clamp
US6739068B1 (en) 2003-01-06 2004-05-25 Pilling Weck Incorporated Pliers with jaw spacing and load measuring readings
EP1534472A1 (en) * 2002-06-18 2005-06-01 Eric B. Carmichael Self-adjusting pliers
US20070186733A1 (en) * 1999-06-15 2007-08-16 I.D.L. Tech Tools, Llc Self-adjusting pliers
US20090198240A1 (en) * 2008-01-31 2009-08-06 Kaufman David L Femoral Tibial Spreader with Tensor Measurement
US20100282032A1 (en) * 2007-10-01 2010-11-11 Wendeng Maxpower Tool Group Co. Ltd. Self-adjusting pliers
US20110221110A1 (en) * 2010-03-10 2011-09-15 Stanley Black & Decker, Inc. Clamp
CN103372831A (en) * 2012-04-28 2013-10-30 山东科技大学 Cam self-locking monkey spanner
US8777953B1 (en) * 2010-10-06 2014-07-15 Greatbatch Ltd. Rocker mechanism

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2475866A (en) * 1946-08-02 1949-07-12 B M C Mfg Corp Cam lever actuated pivoted jaw wrench
US3232152A (en) * 1964-10-26 1966-02-01 Wendell S Miller Alternative fulcrum hand tool
WO1989002806A1 (en) * 1987-09-25 1989-04-06 Audun Haugs Pliers device
US5050465A (en) * 1987-09-25 1991-09-24 Audun Haugs Pliers device
US5269797A (en) * 1991-09-12 1993-12-14 Meditron Devices, Inc. Cervical discectomy instruments
US6014917A (en) * 1998-07-01 2000-01-18 B!G Ventures, L.L.C. Self-adjusting and/or self-locking pliers
US6378404B1 (en) * 1998-07-01 2002-04-30 Big Ventures, L.L.C. Self-adjusting and/or self-locking pliers
US6178855B1 (en) 1998-07-01 2001-01-30 B!G Ventures, L.L.C. Self-adjusting and/or self-locking pliers
EP1202837A1 (en) * 1999-06-15 2002-05-08 Brett P. Seber Self-adjusting pliers
US20040045418A1 (en) * 1999-06-15 2004-03-11 Seber Brett P. Self-Adjusting Pliers
US7444907B2 (en) 1999-06-15 2008-11-04 I.D.L. Tech Tools, Llc Self-adjusting pliers
US20070186733A1 (en) * 1999-06-15 2007-08-16 I.D.L. Tech Tools, Llc Self-adjusting pliers
EP1202837A4 (en) * 1999-06-15 2007-04-25 I D L Tech Tools Llc Self-adjusting pliers
US7100479B2 (en) * 1999-06-15 2006-09-05 I.D.L. Tech Tools, Llc Self-adjusting pliers
CN100551628C (en) 2002-06-18 2009-10-21 I·D·L·技术工具有限公司 Self-adjusting pliers
EP1534472A1 (en) * 2002-06-18 2005-06-01 Eric B. Carmichael Self-adjusting pliers
EP1534472A4 (en) * 2002-06-18 2009-09-30 I D L Tech Tools Llc Self-adjusting pliers
US20040075205A1 (en) * 2002-10-18 2004-04-22 Joel Marks One hand actuated "C" clamp
US6966550B2 (en) * 2002-10-18 2005-11-22 Worktools, Inc. One hand actuated “C” clamp
US6739068B1 (en) 2003-01-06 2004-05-25 Pilling Weck Incorporated Pliers with jaw spacing and load measuring readings
US20100282032A1 (en) * 2007-10-01 2010-11-11 Wendeng Maxpower Tool Group Co. Ltd. Self-adjusting pliers
US20090198240A1 (en) * 2008-01-31 2009-08-06 Kaufman David L Femoral Tibial Spreader with Tensor Measurement
US8162951B2 (en) * 2008-01-31 2012-04-24 Innomed, Inc. Femoral tibial spreader with tensor measurement
US20110221110A1 (en) * 2010-03-10 2011-09-15 Stanley Black & Decker, Inc. Clamp
US8783671B2 (en) * 2010-03-10 2014-07-22 Stanley Black & Decker, Inc. Clamp
US8777953B1 (en) * 2010-10-06 2014-07-15 Greatbatch Ltd. Rocker mechanism
CN103372831A (en) * 2012-04-28 2013-10-30 山东科技大学 Cam self-locking monkey spanner
CN103372831B (en) * 2012-04-28 2015-07-29 山东科技大学 One kind of self-locking cam wrench

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