US1055916A - Wrench. - Google Patents

Description

J. H. JENNER.

WRENCH.

APPLICATION FILED JUNE3,1912.

Patented Mar. 11, 1913.

2 SHEETS-SHEET l.

gvcmtor qmdwwooao J. H. JENNER.

WRENCH.

APPLICATION FILED JUNE 3, 1912.

Patented Mar. 11, 1913 2 SHEETS-SHEET 2.

Suuamtoz fa/inf]. feizrzr Gum UNITED stra'rss PATENT, OFFICE.

JOHN HENRY JENNER, OF LEAVENWORTH, INDIANA.

WRENCH.

To all whom it may concern:

Be it known that I, JOHN H. JENNER, a citizen of the United States, residing at Leavenworth, in the county of Crawford and State of Indiana, have invented certain new and useful Improvements 1n Wrenches;

and I do declare the following to be a full, clean, and exact description of the invention, such as will enable others skilled in the art to which it appertainstomake and use the same.

This invention relates to improvements in wrenches, and more particularly to pipe wrenches.

one object of the invention is to provide a simple and easily operated wrench of this class having a. swinging jaw and a rigid jaw, the swinging jaw being removable and equipped with a reversible fulcrum block to adapt it to be readily and quickly adjusted to fit pipes of different sizes.

Another object of this invention is to provide a quick acting wrench of this character, by the use of which a great economy in labor and time is etiectedf 4 .With these and other objects inventionconsists of certain novel features of construction, and the combination and arrangement of parts as will be more fully described and claimed.

In the accompanying drawings? Figure 1 represents aperspective view of a Wrench constructed in accordance with this invention, and with the jaws in open position; Fig. 2 is a rear edge view thereof; Fig. 3 is a detail perspective view of the pivoted jaw and its detached cam block; F ig l is a side elevation of a portion of the wrench showing the parts in position ready to remove the pivoted jaw; Figf5 is a detail perspective view of the rigid jaw and a portion of the stock to which it is fixed; Fig. 6 is a detail perspective view of the jaw locking lever; Fig. 7 is a transverse vertical section-on the line 77 of Fig. 1.

In the embodiment. illustrated, a stock 1 is shown composed of steel, iron .or other suitable material and having a handle at one .endand a'rigid jaw 2 at the'other end. This rigid jaw 2 is formed on a head 3 arranged at an oblique angle to the stock 1, and having shoulders t formed longitudinally on its opposite faces,'whereby said head is provided with a thickened portion and with a reduced portion which has a book 5 on its rear end, the space between the inner face.

Specification of Letters Patent.

Application filed June 3, 1912.

in view, the

Patented Mar. 11, 1913. Serial Nol 701,269.

tends transversely across the rear of said stock and is arc-shaped or segmental in cross section, for a "purpose to be described.

The pivoted jaw 7 is shown in hookshaped form, having serrations 8 on its inner face for coiipration with the serrations on the fixed jaw. The shanlr of this jaw 7 is bifurcated, and an oblong cam 9 is ivotally mounted at one end between the ifurcated portions of the jaw. This cam 9 correspoxpds in shape to the shape of therecess 6 for ed in the head 3, and is adapted to fit therein for connecting the pivotedjaw to said head. It will be obseryed that by pivoting one end of thiscam to the ivoted jaw, a short and a long end are thereby provided,

and when it is designed to adapt the wrench for use on small pipes the long end is .m-

serted in the recess 6 of the-head 3, whereby the coiiperating faces of the two jaws H arebrought into closer relation than when the short end is inserted insaid recess, it being obviousthat the insertion of the short end in the recess will dispose the free end of the shank-nearer to the rear face of the fixed jaw, and, consequently, will position the cooperating face-of the pivoted jaw farther from said fixed jaw.

A removable member for holding the pivoted jaw in operative position is here shown in the form of a casing 10 slidably mounted on the stock 1, and having a recessed bearing or lug 11, the recess 12 therein being rounded to fit the ends of the cam 9, and when the casing is locked in operative position by -means to be described, holds said cam securely within the recessfi and thereby connects the pivoted jaw with the head 3.

The portion of the casing which carries the lug 11 projects beyond the rear edge of the stock 1 and has a round opening 13 extending transversely therethrough, one side of which overlaps the portion of the casing which fits over the stock- .1, and which, when said casing is in its extreme 55 Y which brings the pin 18 thereon in position i so forward position, brings said recess13 into register with the recess 12' in the rear edge of the stock, thereby forming a circular aperture into which is adapted to be inserted a hollow internally screw threaded stud 14; on a locking lever 15, now to be described. This stud 14 has one flat outer face to permit the casing 10 to disengaged from the stock 1 and to slide freely thereonwhen so released, which occurs when the stud is turned to bring-the flat face thereof into engagement with the fiat face of the'rear edge of the stock, as is shown clearly in Fig. 4. When the rounded face ofsaid stud engages the recess 12 of the stock, the casing is locked to the stock and thereby securely'holds the pivoted jaw in operative position.

The locking lever 15, which is equipped with the stud 14, has one end curved to con form to the curvature of the head 3, and the terminal thereof is provided with a laterally extending hook-shaped member 16 which is adapted to span said head and engage the rear edges of the bifurcated portions of the shank of the pivoted jaw to lock said jaw in gripping or closed position, said lever being held in this position by means to be described. A large-headed screw 17 is adapted toscrew into the hollow stud 'of the lever 15 from the side of the casing ing 10.

opposite that to which the lever is applied, and reliably connects the lever and cas- The rear or handle vend of this lever conforms somewhat to theform of the wrench, and is offset laterally at a point about midway its length to adapt it to be sprung over a lateral projection18 onfa lever locking member 19 slidably mounted on the stock at the rear of the casingilO. This 'member 19 is shown in the form of a sleeve 'with an extension projecting beyond,

the inner edge of the stock 1, and in which extension said projection '18 is mounted, it being here shown in the form of a stud adapted to engage the inner edge of the [lever 15 and prevent its .opening beyondia predetermined point when said locking member isarranged between the casing 10 and said lever handle. When itis desired to remove the pivoted jaw and reverse the fulcrum block thereof in the recess 6, the locking member 19 is slipped rearwardly on the stock l to its extreme rearward limit,

opposite the offset handle of said lever port on, thereby permitting said handle to be moved over said stud and the lever opened into the position shown in Fig. 1. This lever may be then turned to release the stud 14 from the recess v 12 in the stock l and permit the casingto be slipped rearwardly to disengage the recessed lug 11 from the block 9. Theblock may be then readiiy :being limited by slipped out of the recess 6 andreversed and the parts a ain brought into operative position by sli ing the casing 10 forwardly on the stock and turning the lever into closed position, and then moving the locking elements forwardly.

The inner edges of the bifurcated portio of the pivoted jaw are adapted 'to engage the shoulders 4 at the front end of the head 3 and thereby limit the forward movement of the pivoted jaw, its rearward movement a the book 16 of the locking lever 15, as heretofore described.

"In the operation of this improved wrench,

the parts being in the position shown in Fig. 1 and the handle of thewrench gripped in the right hand of the operator, the free end of the handle of the lever 15 is moved away from said wrench handle *to permitthe pivoted jaw to swing rearwardly into open position to provide forthe gripping of a pipe between said pivoted jaw and the rigid jaw. After the pipe has been gripped by the jaws the lever handle is moved inwardly and gripped bythe right hand of theoperator together with the handle of, the wrench, thereby securely locking the aws in gripped relation. .The front edge of this lever 15 is curved downwardly between the handle and the fulcrum thereof, said curved portion limiting the extent of movement of the jaw engaging portion of said lever when the locking member 19 is disposed on the stock in advance of'said curved portion of.

the lever, it having been heretofore de'- scribed that the lever' may be entirely released to open to its full extent-when the locking element is moved beyond a prede-.

termined point.. Y

'I claim as my invention:

1. A wrench having a fixed and a movable jaw, said movable jaw being removable I and provided with reversible means pivoted thereon for varying the size of the space between it and the fixed jaw.

2. A wrench comprisinga'stock having a fixed j'aw at one end, and a movable jaw pivotally mounted in relation to said fixed jaw and having a reversible member pivoted thereto for varying the size of the space between said jaws when in operative position. 3. A wrench comprising a stock having a fixed jaw at one end, a movable jaw pivotally mounted in relation to said fixed jaw and having a reversible member pivoted thereto for varying the size of the space between said jaws when in operative position, andmeans under the control of the operator for limiting the outward movement of said movable jaw;

4. A wrench comprising a stock having a head at one end provided with a fixed jaw and with a recess at the rear of said jaw, a

.movable jaw having a block pivotally mounted thereon and adapted to fit within Shaped end for engaging said movable jaw for limiting its outward movement and for locking said jaw in closed position, and a lever locking element slidably mounted on said stock.

6. A wrench comprising a stock having an obliquely disposed head at one end thereof, a fixed jaw at the free end of said head, a recess formed in said head at the rear of said jaw, a pivoted jaw having a bifurcated shank, an oblong block pivotally mounted at oneend in said bifurcated shank and adapted to fit in said recess, and lever controlled means for locking said block in said recess.

7. A wrench comprising a stock having an obliquely disposed head at one end thereof, a fixed jaw at the free end of ,said head, a recess formed in said head at the rear of said jaw, a pivoted jaw having a bifurcated shank, an oblong block pivotally mounted at one end in said bifurcated shank andadapted to fit in said recess, a casing slidably mounted on said stock having a recessed lug for engaging the outer end of said block for holding it in operative position, and means for locking said casing in position on said stock to cause said lug to engage said block.

8. A wrench comprising a stock having an obliquely disposed .head at one end thereof, a fixed jaw at the free end of said head, a recess formed in said head at the rear of said jaw, a pivoted jaw having a bifurcated shank, an oblong block pivotally mounted at on end in said bifurcated shank and adapted in. fit in said recess, a casing slidably mounted on said stock having a recessed lug for engaging the outer end of said block for holding it in operative position, said casing having an aperture extending transversely therethrough and overlapping said stock at one side, a recess in the rear edge of said stock adjacent said head, and a rotatable member mounted in said casing and adapted to engage the recess in said stock for locking said casing to the stock in operative position to cause the lug thereof to engage said block.-

9. A wrench'eom risinga stock having an obliquely disposed head at one end Copies of this parent may be obtained for five cents each, by addressing Washington, D. 0.

thereof, a fixed jaw at the free end of said head, a recess formed in said head at the rear of said jaw, a pivoted jaw having a bi.- furcated shank, an oblong block pivotally mounted at one end in said bifurcated shank and adapted to fit in said recess, a casing slidably mounted on said stock having a recessed lug for engaging the outer end of said block for holding it in operative position, said casing having an aperture extending transversely therethrough and overlapping said stock at one side, a recess in the rear edge of said stock adjacent said head, and a rotatable member mounted in said casing and adapted to engage the recess in said stock for locking said casing to the stock in operative position to cause the lug thereof to engage said block, said rotatable member having one flat face to permit it to slide on the edge of the stock when disengaged from the recess therein.

10. A wrench comprisinga stock having -an obliquely disposed head at one end thereof,a fixed jaw at the free end of said head, a recess formed in said head at the rear of said jaw, a pivoted jaw having a bifurcated shank, an oblong block pivotally mounted at one end in said bifurcated shank and adapted to fit in said recess, a casing slidably mounted on said stock having a recessed lug for engag ng the outer end of said block for holding it in operative position, said casing ha ing an aperture extending transversely therethrough and overlapping said stock at one side, a recess in the rear edge of'said stock adjacent said head, a rotatable member mounted in said casing and adapted to engage the recess in said stock for locking said casing to the stock in operative position to cause the lug thereof to engage said block, said rotatable member having one fiat face to permit it to slide on the edge of the stock when disengaged from the recess therein, and a lever fixed to said rotatable casing locking member and having means for locking the movable jaw in closed position and for limiting its outward movemerit.

11. A-wrench comprising a stock having a head at one end provided with a fixed jaw and with a recess, a movable jaw having a block pivotally mounted thereon and adapted to fit within said recess, and means for locking said block in said recess.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

JOHN HENRY JENNER. Witnesses:

LUTHER PETERS, HA'rrm ELLswoR'rH.

the Commissioner of Patents,

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