US877225A - Pipe-wrench. - Google Patents

Description

PATENTED JAN. 21, 1908.

G. PATER SON. PIPHWRENGH.

APPLICATION TILED NOV. 4, 1907.

U I 8mm 6 ew ye fade/"$017 w l/tmoow a the form. of a fiat metal bar.

' are inserted, said side I yer for the jaws, thereby increasing nrrn erase GEORGE PATERSON, OF BARRE, VERMONT.

PIPE-WBENCH.

Application filed N vember To all whom it may concern:

Be it known that I, GEORGE PATEnsoN, a citizen of the United States, Barre. in the county of Washington and State of Vermont, have invented certain new and uselul improvements in Pipe-Wrenches; and 1 do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in pipe wrenches.

The object of the invention is to provide a pipe wrench haying pivotally connected coaing jaw members which are so engaged. by the handle that the latter forms a double lethe gripping power of the same.

With this object in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and particularly pointed out in the appended claims.

.lnth'e accompanying drawings, Figure 1 is a side view of the wrench showing the jaws in a closed or operative position, parts being broken away and in section; Fig. 2 is a similar view showing the jaws in an open position Fig. 3 is a frontedge view of the wrench; and Fig. 4 is a side view of the parts separated.

in the embodiment of my invention 1 provide a handle, 1, which may be of any suitable length. and is preferably constructed in. On the outer end of the handle is arranged an elliptically shaped head, 2, which is integrally connected to the handle bar by a reduced curved neck, 3, whereby said head is slightly oliset toward the rear edge of the handle.

Pivotally connected to the outer end of the handle is an inner member, 4, said member being preferably formedby a pair of parallel side plates, 5, between the inner ends of which the head 2 and neck plates being plvotally connected with the end of the handle adjacent to the inner end of the neck portion 3,

thereby permitting said jaw member to swing freely on the outer end of the handle. On the outer ends of the plates 5 is formed the working portion 01 the inner jaw, said portion being formed by substantially rightangu'lar projections 6, which. are connected together and spaced apart by a block 7,

Specification of Letters Patent.

residing at l 3 of the handle j Patented Jan. 21, recs.

4.1907. Serial No. 400.642.

tially to the curvature of the outer edges of projection, 6, and block 7. of the and with which edge the inner edge of the outer jaw is adapted to co-act in gripping a pipe or other object. In the inner edge of the extreme outer end of the working portion of the jaw 8 is a reduced connecting plate 12, which is adapted to be inserted between the plates 5 of the inner jaw member, said )late 12 being pivotally connected to the plates 5 by means of a centrally disposed pivot bolt 1.3. On-the inner end of the con necting plate 12 is formed a forwardly projecting jaw-opening lug 14, and a rearwardly projecting jaw-closing lug 15, between which 18 formed arecess, 16, in which is. seated the elliptical head 2 of the handle.

The outer end of the jaw-opening lug 14 projects beyond the forward edges of the lates 5 and between the upper edge of said ug and the adjacent lower edge of the spacing block 7 of the inner jaw member is arranged a jaw-closing spring, 17, which may be of any suitable form, but which is here shown as a coiled spring having its opposite end seated in recesses or sockets 18 formed in the upper edge of the lug 14, and the lower edge of the block 7.

In the operation of the device, the spring 17 will normally force the jaw members to the position shown in Fig. 1 of the drawings, in which position they are engaged with the pipe or other article to be turned, after which the handle 1 is swung in the roper direction to bring the elliptical head t ereon into engagement with the closing lug, 15, of the outer jaw, thereby forcing said lug outwardly and the working portion of the outer jaw downwardly or inwardly into engagement with the working portion of the inner jaw. When the head 2 is thus engaged with. the lug 15, the pivotal connection of the handle with theside plates 5 j the working inner aw,

of the-inner jaw member will force said.

.'cc nnected at their inner ends to the outer g I 877,226 v movement of the lug 15, and thereby force the working portion of the inner jaw outwardly or into engagement with the opposite side of the pipe or other article to be turned, the handle 6 thus exerting a double leverage power, or, in other words, actuating both the inner and the outer jaws to cause the same to tightly grip the article between them, 4

Having thus described my invention, What I claim as new and desire to secure by Letters-Patent, is: a

1. In a wrench of the character described, a handle, an operating head on the outer. end of said handle, an inner jaw member pivotally mounted on said handle, an outer jaw member pivotally mounted on the inner jaw, a s rin adapted to hold said 'outer jaw mem er 1n engagement with the inner jaw, and integrally formed 0 ening andclosing lugs on said outer jaw a apted to be engaged by the head on said handle, whereby said jaws are forcibly held in closed position and in en agement with the article to which the wrenc is applied, substantially as described.

2. 1111 a wrench of the character described, a handle, an operating head on the outer end of said handle, an inner jaw member comprising a pair of parallel side plates, pivotally operating head on said handle to open and c ose said jaws, and a sprin to hold said jaws in closed position, su stantially as described 3. In a wrench of the character described,

a handle, an operating head formed on the outer end of said handle, an inner jaw member comprising a pair of parallel side plates pivotally connected at their inner ends to the outer ends of said handle, substantially rightangular working projections formed on the outer ends of said plates, a spacing block arranged between said rojections to form a working surface wit the outer edges thereof, an outer jaw member comprising a curved working with the working projection of said inner jaw member, an integrally formed connecting late on said outer jaw member adapted to be inserted between the side inner jaw member and pivota y connected thereto, integrally formed opening and closing lugs on the inner ends of. said connecting plate ada ted to be engaged by the head on said han one of said lugs an of said inner jaw member, substantially as described. In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

end of said handle, an outer jaw member GEORGE PATERSON comprising a curved Working portion adapted to co-act with the working portion Witnesses: of the inner jaw member, means on said GEO. AjREED,

outer jaw adapted to be engaged by thel MARY ESEXTON.

portion adapted toco-act e, and a spring arranged between the Working projection lates of the V

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