US393321A

US393321A - Wrench

Info

Publication number: US393321A
Authority: US
Publication date: 1888-11-20
Anticipated expiration: 1905-11-20

Description

D. A. B. BAILBYX; N. MQGILLIVARY.

WRENCH No. 393,321. Patented Nov. 20, 1888.

(No Model.)

. Inventorsg 13 Novmm \C3\\\ w/w a UNIT D STATE FArnNr tries.

DANIEL A. B. BAILEY AND NORMAN MCGILLIVARY, OF POTSDAM, NEW

YORK.

WRENCH;

SPECIFICATION forming part of Letters Patent No. 393,321, dated November 20, 1888.

Application filed May 28, 1888. Serial No. 275,332. (No model.)

To all whom it may concern:

Be it known that we, DANIEL A. B. BAILEY and NORMAN MOGILLIVARY, citizens of the United States, residing at Potsdam, in the county of St. Lawrence and State of New York, have invented certain new and usefulImprovements in Pipe-Wrenches; and we 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, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

Our inyention relates to pipewrenches; and it has for its object to provide a wrench of this kind which shall be both simple and durable, and at the same time more efficient in operation and less expensive in construction than the tools of this class that have heretofore been constructed.

To these ends, and to such others as the in vention may relate, the same consists in the peculiar construction and in the novel combinations, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the drawings, and then specifically defined in the appended claims.

In the accompanying drawings, which,with the letters of reference marken thereon, form a part of this specification, Figure l is a perspective view of the head of a wrench constructed in accordance with my invention. Fig. 2 is a side view, partly in section. Fig. 3 is a top plan view of the same.

Reference now being had to the details of the drawings by letter, A represents the lever of the wrench, upon one end of which is formed the enlarged portion or head B, the extreme outer end of which is inclined downwardly and is provided with a chisel-shaped edge, 0. Near the lower edge of the lever,

and at a point near the head of the wrench, a hole, D, is provided, within which hole is secured one end of the chain E, which may be of any wellknown construction.

F F are lugs or ears cast integral with and forming a part of the head B. These lugs are arranged upon the upper surface of the head of the wrench, having their bases upon the opposite outer edges of the same, and each lug is bent or inclined backward and inwardly, thus forming a dish-shaped recess or chamber, G, provided at its front and rear sides with narrow vertical slots or openings'H H.

In operation the free end of the chain E is passed around the pipe and back over the head of the wrench, and one ofthe links of the chain is placed horizontally within the chamber formed by thelugs upon the head of the wrench, where it will bind against the inner walls of the chamber and will be securely retained in place. The link of the chain next adjacent to the chamber upon either side will pass through the slots H H, while the link at the rear of the chamber will lie in a horizontal position across the head of the wrench and will bear against the rear faces of the lugs at the rear of the chamber. In moving the lever or handle of the wrench upward the chiseledge 0 is caused to bear directly against the pipe. The strain upon the chain will be divided between the link which is retained within the chamber upon the head of the wrench and the link at the rear of the chamber.

We attach special importance to our dishshaped ehamber,within which one of the links of the chain is adapted to fit, whereby the strain is divided between the links and the walls of the chamber, and in order to the more equally divide the strain the rear edges or faces of the lugs F are made flat and vertical, as shown, so that the link of the chain adjacent to the rear of the chamber has a flat bearing against the vertical sides of thelugs, as will be readily understood.

What we claim to be new is-- l. The wrench described, consisting of the lever A, formed at one end with head B, the outer end of which is inclined downwardly and is provided with a chisel-shaped edge, 0, the chain E, one end of which is secured to the head of the wrench, and the lugs F, formed of said head and constituting the walls of a'dishshaped chamber, G, provided at diametricallyopposite sides in line with the lever with vertical slots, substantially as described.

2. The chain-wrench described,consisting of the lever A, head B, provided at its end with stantially as shown and described, and for the downwardly-inclined chisel-shaped edge 0, the purpose specified. chain E, the downwardly-extended lughaving In testimony whereof we alfix our signatures ahhoe, IP, to receive one end of the chain, and in presence of two witnesses. 5 t e is shaped chamber upon the upper face T of the head of the lever over the said lug, said chamber being adapted to receive and retain within its walls one link of the chain and Witnesses: formed by the inwardly-inclined lugs fixed 0n HORACE LEE,

:0 said head and having vertical rear edges, snb- THEO. H. SWIFT.