US653364A - Pliers. - Google Patents

Pliers. Download PDF

Info

Publication number
US653364A
US653364A US73030599A US1899730305A US653364A US 653364 A US653364 A US 653364A US 73030599 A US73030599 A US 73030599A US 1899730305 A US1899730305 A US 1899730305A US 653364 A US653364 A US 653364A
Authority
US
United States
Prior art keywords
jaws
pliers
movement
handles
opening
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
US73030599A
Inventor
Giovanni B Pittavino
Original Assignee
Giovanni B Pittavino
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
Application filed by Giovanni B Pittavino filed Critical Giovanni B Pittavino
Priority to US73030599A priority Critical patent/US653364A/en
Application granted granted Critical
Publication of US653364A publication Critical patent/US653364A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B5/00Clamps
    • B25B5/06Arrangements for positively actuating jaws
    • B25B5/10Arrangements for positively actuating jaws using screws

Description

" UNITED STATES PATENT OFFIE.

GIOVANNI B. PITTAVI NO, Oli NEW' YORK, N. Y;

PLIERS.

SPECIFICATION forming part of Letters Patent No. 653,364, dated July 10, 1900. Application filed September 13, 18?.9- Serial No. 730,305. (No model.)

1'0 on whom it may concern:

Be it known that LGIOVANNI B. PITTAVINO, a subject of the King of Italy, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Pliers, of which the following is a full and complete specification, such as will enable those skilled in the art to which it appertains to make and use the same.

Thisinvention relates to pliers, and has particular relation to that class of pliers which are used by jewelers and embody jaws which maintain the same relative plane in their opening and closing operation.

The object of my invention is to provide a simple and improved mechanism by which the jaws when they have grasped an object can be set or adjusted against further open movement, thus locking the pliers in their clamping operation and enabling the same to be set aside without removing the clamped object and Without necessity for retaining the pliers in the hand to continue their clamping operation.

The invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which the separate parts of my improvement are designated by the same numerals of reference in each of the Views, and in which- Figure 1 is a side elevation showing a pair of jewelers pliers embodying my improve-1 ments and Fig. 2 a longitudinal sectional view of the same.

My invention is especially adapted to the form of pliers illustrated in Letters Patent'No.

427,220, dated May 6, 1890; but it is obvious that it may also be used in connection with any other general form or construction of jewelers pliers in which the jaws open'and close without varying their relative planes and which jaws have a rearwardly-sliding movement in their opening operation.

The form of pliers illustrated in the accompanying drawings embodies two sheet-metal handle-levers 1 1, bent up to form hollow handle portions 2,and respectively carrying crosspieces 3, united together by a main pivot 4 and inclosing the solid jaws 55, said jaws being pivoted to the outer ends of the crosscurely locked against further opening.

pieces 3 by means of pivot-pins 6 and having their inner ends slotted, as at 7, for the passage of guide-pins S, by means of which the jaws are maintained without varying their relative planes in the movement of opening and closing and are adapted to slide rearwardly and forwardly in said operation between the cross-pieces 3 3.

It will be understood that the specific purpose of such construction and arrangement as that just described in jewelers pliers is to keep the clamping-surface of the jaws always in a true parallel position as said jaws open and close. For a better understanding of the main construction of the pliers as just above set forth reference may be had to the abovementioned Letters Patent,it being understood that the adaptability of my invention to jewelers pliers concerns not essentially the specific construction-above mentioned, but is related to any form of jewelers pliers in which the jaws in their opening and closing movement slide rearwardly and forwardly with respect to the handles.

I will now proceed-to describe my improvements for adjusting the jaws, so that when they are clamping an object they will be se- It will be understood that the jaws essentially operate in a simultaneous movement, so that the application of the adjusting or set device to'one of the jaws of course controls the movethe inner end of one of the sliding jaws 5. I

prefer to mount said screw-rod within the hollow handle portion of the handle and provide threaded bearings 11 11 for the threaded portion'12 of the rod in projecting lugs 13 13, interiorly projecting within said hollow handle portions. The screw-rod of course extends on a longitudinal plane with respect to the handle 1, and its outer end 1% projects through a suitable opening 15 in the outer end of the handle and is provided witha milled operating-head 16.

The operation and advantages of my in vention will be readily understood by those skilled in the art to which it appertains.

When the rod 9 is at its rearward limit of adjustment, the jaws 5 can be separated to their full limit. They are adapted when separated to clamp any desired object, and when so arranged in clamping position it is only necessary to screw up the rod 9 so that its end projects against the rear or inner end of the jaw 5, when the jaws will be forced into tight contact with the object clamped and locked against further opening or rearward movement. Itis therefore then unnecessary to retain the pliers in the hands for the purpose of causing them to continuously clamp or bind the object, and they can simply be laid aside or otherwise arranged or disposed of as may be desired.

Having fully described my invention, I claim as new and desire to secure by Letters Patent 1. Pliers of the class described, comprising handles provided with jaws movably connected therewith, the relative construction and arrangement bei ng such that in the movement of said jaws the operative faces thereof at all times project in planes of constant rela tion, and an adjustable set device which opcrates in connection with one of said jaws whereby the play thereof may be limited, substantially as shown and described.

2. Pliers of the class described, comprising pivoted movable handles provided with pivoted jaws, means for causing said jaws to reciprocate upon movement of said handles, and an adjustable set device arranged to operate in connection with one of said jaws whereby the movement thereof may be limited, substantially as shown and described.

3. Pliers of the class described, comprising handles pivoted together, and each provided at one end with a pivoted jaw which is slotted at its inner end, pins connected with said handles and operating within said slots, and a set-screw operatively connected with one of said handles and bearing upon the inner end of one of said jaws, substantially as shown and described.

In testimony that I claim the foregoing as my invention I have signed my name, in presence of the subscribing witnesses, this 12th day of September, 1899.

GIOVANNI B. PITTAVINO.

Vitnesses:

F. A. STEWART, V. M. VOSLER.

US73030599A 1899-09-13 1899-09-13 Pliers. Expired - Lifetime US653364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US73030599A US653364A (en) 1899-09-13 1899-09-13 Pliers.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US73030599A US653364A (en) 1899-09-13 1899-09-13 Pliers.

Publications (1)

Publication Number Publication Date
US653364A true US653364A (en) 1900-07-10

Family

ID=2721933

Family Applications (1)

Application Number Title Priority Date Filing Date
US73030599A Expired - Lifetime US653364A (en) 1899-09-13 1899-09-13 Pliers.

Country Status (1)

Country Link
US (1) US653364A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553620A (en) * 1947-09-16 1951-05-22 Yeazell William Olds Parallel expanding-jaw pliers
US2942508A (en) * 1957-09-17 1960-06-28 John J Bannister Locking pliers
US3215007A (en) * 1963-06-14 1965-11-02 Douglas S Stallings Tool for stripping insulation from electric cables
DE19750617A1 (en) * 1997-11-14 1999-06-02 Joachim Geyer Special pliers

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2553620A (en) * 1947-09-16 1951-05-22 Yeazell William Olds Parallel expanding-jaw pliers
US2942508A (en) * 1957-09-17 1960-06-28 John J Bannister Locking pliers
US3215007A (en) * 1963-06-14 1965-11-02 Douglas S Stallings Tool for stripping insulation from electric cables
DE19750617A1 (en) * 1997-11-14 1999-06-02 Joachim Geyer Special pliers
DE19750617B4 (en) * 1997-11-14 2005-12-01 Joachim Geyer Special pliers

Similar Documents

Publication Publication Date Title
US1489458A (en) Wrench
US1352647A (en) Double clamp
US2997903A (en) Pliers with self-adjusting toggle means
US3793914A (en) Vise grip pliers
US2312947A (en) Wrench
US2399454A (en) Wrench
US2562060A (en) Slidable side jaw socket wrench
US2420020A (en) Lever-actuated pivoted-jaw wrench
US57447A (en) Improvement in hand vises or clamps
US2496309A (en) Lever actuated pivoted jaw wrench
US2379107A (en) Clamp wrench
US1181654A (en) Wrench.
US1220899A (en) Tongs.
US3590669A (en) Pliers with adjustable toggle lock
US2838973A (en) Releasing means for self-locking plier type toggle wrench
US287271A (en) Porter a
US2398209A (en) Hand tool
US153206A (en) Improvement in joiners clamps
US927975A (en) Veneering-press.
US577770A (en) Martin
US557453A (en) thompson
US701237A (en) Pipe-wrench.
US1576918A (en) Wrench
US359833A (en) James m
US586359A (en) William b