US620652A

US620652A - Combined nut and pipe wrench

Info

Publication number: US620652A
Authority: US
Publication date: 1899-03-07
Anticipated expiration: 1916-03-07

Description

Patented Mar. 7, I899. L. K. HOLLYMAN &. B. SWEARINGEN.

COMBINED NUT AND PIPE WRENCH.

(Application filed May 28, 1898.)

(No Model.)

71 messes.-

NiTED STATES PATENT ()FFICE.

LESLIE K. HOLLYMAN AND BENONI SI/VEARINGEN, OF KANSAS CITY,

MISSOURI.

COMBINED NUT AND PIPE WRENCH.

SPECIFICATION forming part of Letters Patent No. 620,652, dated March 7, 1899.

Application filed May 28,1898. Serial No. 682,081. (No model.)

To aZZ whom it may concern.-

Be it known that we, LESLIE K. HOLLYMAN and BENONI SWEARINGEN, of Kansas City, Jackson county, Missouri, have invented certain new and useful Improvements in a Oombined Nut and Pipe Wrench, of which the following is a specification.

Our invention relates to combined nut and pipe wrenches; and our object is to produce a wrench of simple, strong, durable, and inexpensive construction provided with a ballbearing, whereby any tendency of the wrench to stick will be obviated and its easy manipulation assured.

To this end the invention consists in certain novel and peculiar features of construction and combinations of parts,as will be hereinafter described and claimed.

In order that the invention may be fully understood,we will proceed to describe it,with reference to the accompanying drawings, in which- Figure 1 represents a sectional view with the jaws and jaw-shanks in elevation. Fig. 2 represents a sectional View with the stationary jaw and jaw-shank in elevation. Fig. 3 is a horizontal section taken on the line III III of Fig. 1. Fig. 1 represents a sectional view taken on the line IV IV of Fig. 1.

In the said drawings, 1 designates the stationary head or jaw of the wrench provided with a segmental cavity 2 and centrally with the rectangular shank 3, extending at right angles to said jaw, and provided at its opposite end with a bolt extension 4 of smaller diameter.

5 designates the movable jaw provided at a point vertically below the cavity 2 with a tapering saw-tooth surface 6 in order that a pipe or cylindrical nut may be reliably gripped and turned when necessary.

The jaw 5 is provided with a tubular shank '7, extending at right angles to the jaw, but of somewhat shorter length than the shank of jaw 1, and said shank is provided with a rectangular passage which extends clear through the jaw in order that it may fit slidingly and non-rotatably upon the shank of jaw 1, as shown plainly in Fig. 3, and said tubular shank 7 is provided externally with a screw-threaded surface 8, which exceeds in length the distance which the movable jaw is capable of moving.

.9 designates a handle provided internally at'its middle with a number of screw-threads 10, the handle being of such length thata nonthreaded surface longer than the distance which the movable jaw travels is provided at opposite sides of said threaded surface, as shown in Figs. 1 and 2, and said handle near one end is provided with a perforated partition 11, through which projects the bolt extension 4 of the stationary jaw-shank, and arranged against the opposite sides of said partition are the bearing-

balls

12 and 13. The former are held against said partition by means of the steel Washer 14, through which said bolt extension also extends, and the latter are held against said partition by means of the nut 15, engaging the bolt extension, and by pressure against the balls 13, clamping the adjacent end of the rectangular portion of the shank firmly against the washer 1 1.

From the above description it will be apparent that the rotation of the handle 9 to the right causes the movable jaw to open or slide away from the stationary jaw, this action taking place with a minimum of friction because the handle turns on

balls

12 and 13.

The majority of wrenches at present in use are very objectionable, in that after being subject to a severe strain it is frequently possible to manipulate the wrenchthat is, to adjust the movable jawonly after taking a hammer or other suitable object and striking the wrench one or more times, this trouble occurring because of the engaging surfaces being practically flat and of comparatively short length. This difficulty is obviated by the ball-bearing construction which we employ, as it is impossible to impose sufficient strain upon the wrench to clamp the balls so tight that they will not instantly respond when the handle is turned, and as a result it is impossible for the jaw to stick, and as a further precaution against this trouble the movable jaw has such a long bearing upon the shank of the stationary jaw that it cannot twist or turn under any strain imposed. When a nut or other object is clamped between the jaws, the balls 13 and the engaging threads sustain the strain mainly, while the balls 12 receive most of the strain when it is attempted to release the object. Consequently it is clear there is no possibility of the wrench-jaw sticking at any point.

From the above description it will appear that we have produced a combined nut and pipe wrench which embodies the features of advantage enumerated as dea'rable in the statement of the invention, and it will be noted in this connection that the threads of shank 7 are covered completely by the handle at all times, which is of advantage chiefly in point of appearance.

It will be noticed that the wrench maybe taken apart or its parts reassembled quickly and easily, and it is to be understood that we reserve the right to make all changes which properly fall within the scope and spirit of our invention.

As it is desirable to positively lock the jaws from accidental movement, we prefer to em-' ploy the set-screw 15, mounted in the upper end of the handle and adapted to impinge upon the shank 7 of the movable jaw.

Having thus described the invention, what we claim as new, and desire to secure by Letters Patent, is-

1. A combined nut and pipe wrench, comprising a stationary jaw, a shank and a bolt extension, a movable jaw mounted and adapt-' ed to slide but not to rotate upon the shank of the stationary jaw, and provided with external screwthreads, a handle internally threaded and engaging the threaded shank of the movable jaw and provided with a perforated partition j ournaled upon said bolt extension,bearing-balls at opposite sides of said partition, a washer upon said bolt extension and between the stationary-jaw shank and one set of said balls, and a nut screwed upon said bolt extension and holding the other set of balls against said partition, substantially as described. I

2. A combined nut and pipe wrench, comprising a stationary jaw, havinga shank and a bolt extension, a movable jaw mounted and adapted to slide but not rotate upon the shank of the stationary jaw, and provided with external screw threads, a handle internally threaded and engaging the threaded shank of the'movable jaw, and having a ball-bearing upon the bolt extension, and a set-screw 15, mounted in the handle and adapted to impinge on the shank of the movable jaw, substantially as described.

In testimony whereof we aflix our signatures in the presence of two witnesses.

LESLIE K. HOLLYMAN. BENONI SWEARINGEN. Witnesses:

M. R. REMLEY, F. S. THRASHER.