US536165A - Wrench - Google Patents

Description

A; L. WINGE.

WRENCH.

(No Model.)

No 536,165. Patented Mar. 19, 1895.

INVENTOH W/TNESSE:

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. fixed at one end of a lever bar, a sliding j aw UNITED STATES ALF LAUBERT WINGE, OF MILES CITY, MONTANA, ASSIGNOR OF TWO-THIRDS SAME PLACE, AND OONLY D. EAMES, OF I TO THOMAS H. DEOHERT, OF GLENDIVE, MONTANA.

PATE T OFFICE.

WRENCH.

SPECIFICATION forming part Of Letters Patent NO. 536,165, dated March 19, 1895- Application filed November 3, 1894- Serial No. 527,811. (No model.)

To all whom it may concern.-

Be it known that I, ALF LAUBERT WINGE, of Miles City, in the county of Custer and State of Montana, have invented new and useful Improvements in Wrenches, of which the following is a full, clear, and exact description.

My invention relates to improvements in a class of wrenches having a transverse jaw on said bar, a movable rack adapted for adj ustable engagement with a sliding jaw to retain it locked at different points on the lever bar, and means to hold the rack stationary on the bar.

The object of my invention is to provide novel details of construction for a wrench of the type indicated, which will afford increased efficiency forthe implement without adding to its cost.

To this end my invention consists in the peculiar construction and combination of parts, as is hereinafter described and indicated in the claims. 7

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar numerals of reference indi cate corresponding parts in all the figures.

Figure 1 is a side view of the improved wrench. Fig. 2 is a partly sectional side view of a wrench having the improvements. Fig. 3 is a detached sectional side view of the sliding jaw for the wrench. Fig. 4 is a transverse sectional view on the line 4-4 in Fig. 2; and Fig. 5 is a transverse sectional view, on the line 55 in Fig. 2.

The lever bar 10, that is rectangular in cross section, is afforded suitable dimensions to adapt it for the service it is to perform, the improvements being of a nature that will permit their co-action with other parts of a sliding jaw wrench, of any desired size and strength.

The transverse fixed jaw 11, is formed integral with the lever bar 10, and is given the ordinary shape for such a portion of the wrench, as is shown in Figs. 1 and 2. A shank 12 is produced on the other end portion of the lever bar, this being preferably ,taperedtoward its free terminal, and is so reduced indiameter that a shoulder is formed at the point where the shank joins the thickest part of the bar 10.

The handle piece 13, is made of wood or other available material, and is shaped to afford a convenient grip-piece, as represented in Figs. 1 and 2, it being axially perforated in a manner which will effect a close fit between itand the tapered shank when mounted on the latter.

To preserve the ends of the handle piece, a capped ferrule 14, is closely fitted on the end which has contact with the shoulder at the inner termination of the shank, and a cupped washer 15, is located on the other extremity of the handle piece, said washer affording a seat for the clamping nut 16, that has a threaded engagement with the reduced end of the shank,which is screw-cut, and projects sufficiently outside of the washer to receive the nut.

The sliding jaw 17 is shaped as is clearly shown in Fig. 3, where it is represented as detached from the bar 10; and comprises a sleeve of correct dimensions, which is furnished with a laterally projecting nose at one end, which is shaped to correspond with the form of the nose on the fixed jaw 1 1. The aperture which extends through the jaw 17, is of such a width as will allow its parallel side walls to loosely embrace two opposite sides of the lever bar 10, and at the end where the nose of the sliding jaw projects, said aperture is shaped to effect a loose contact of the sliding jaw with all sides of the bar it is mounted on.

At a proper distance from the level face of the jaw 17, that in service is opposite to and parallel with the gripping face of the fixed jaw 11, the transverse diameter of the aperture in the sliding jaw is sufficiently increased to admit the insertion of other parts, one of said parts being the plate spring 18, which has one of its ends secured on the inner surface of the rear wall of the jaw 17 near the gripping face of the latter, the free end of the spring being projected toward the opposite end of the jaw, as is clearly shown in Figs. 2 and 3.

The front wall of the sliding jaw 17, or of the sleeve portion of the same, has a shortintegral ratchet-toothed rack 19 formed in it,

that lies opposite the free end portion of the spring 18, or said rack may be separately pro- 5 duced, and be secured in the jaw if preferred.

A rack 20, having ratchet teeth formed on one side throughoutitslength, of apitch that will permit it to correctly mesh with the teeth of the rack in the sliding jaw, is furnished with a transversely central dove-tailed tongue 21, that is longitudinally formed on the side opposite the teeth of the rack, and extends nearly the entire length of the rack.

In the side of the lever bar 10 which will lie nearest the ratchet teeth 19, when the parts of the wrench are assembled, a dovetailed channel is produced, in which the tongue 21 will slide and fit neatly, said channel being extended nearly from end to end of the bar.

At the point where the rectangular body of the lever bar joins the integral shank 12, a portion of said body is made cylindrical, and has a screw thread of fine pitch formed on it, as shown at 22 in Figs. 1, 2 and 5, and on the screw stem portion of the bar a sleeve nut 23 is screwed, the latter being peripherally grooved to produce a continuous annular channel, as represented at 24 in the figures mentioned.

There is a toe 25 formed on the side of the rack 20, at the end which is projected toward the handle piece 13, this formation being produced by transversely grooving the rack body at a short distance from its extremity and on the same side with the dove-tail tongue. The toe 25 is made to loosely fit in the annular channel of the sleeve nut 23, one circumferential flange on the latter, which is produced by the formation of said channel, enterin g the transverse groove in the rack, which effects an interlocking engagement of the rack 20 with the sleeve nut, and adapts said nut to slide the rack when it is rotated on the screw stem 22, and traverses the latter.

In assembling the parts, the jaw 17 is slid on the lever bar so as to dispose its nose opposite the similar formation of the fixed jaw 11, which will compress the spring 18, as indicated in Fig. 2, the other parts being subsequently arranged as shown.

1n operating the wrenclntoadjustits sliding jaw so as to permit both jaws of the wrench to properly engage with a nut, bolt-head, or other object on which the wrench is to be applied, the sliding jaw is pressed toward the rack 20, which the resilience of the spring 18 will perinit. This will detach the teeth of the movable rack from the fixed rack 19, and allow the jaw 17 to be longitudinally adjusted. Should the pitch of the teeth on the stationary rack 19 and slidable rack be too coarse to permit a proper engagement of the jaws of the wrench with the object to which they are applied, the adjusting sleeve nut 23 is rotated in a proper direction, which will further slide the jaw 17, that has become interlocked with the rack owing to the pressure of the spring 18. As the nut 23 is preferably check milled on each of its peripheral flanges, a surface is thus provided which will enable the operator to rotate the nut withoutthe annoyance of a loss of grip on it, which is an advantage when the implement is used with grease soiled hands, that frequently happens to be the case if the device is used by ma- .chinists or engineers, for whom the improvement is a specially convenient implement.

The provision of the dove-tailed tongue on the ratchet rack 20, and its sliding engagement with a mating channel in the lever bar 10, permits the rack to he slid with ease, and at the same time maintains apositive clutched engagement of the rack with the lever bar, which is a valuable feature of the improvement, as if this provision is not adopted the 8 rack will be liable to bend, and disengage its toe from the sleeve nut when repeatedly subjected to heavy strains incidental to the use of the wrench.

The provision of the plate spring 18 aifords means for enforcing the engagement of the racks 19 and 20 which is much superior to spiral springs used for a similar purpose on other devices of the same type, as the plate spring may be compressed nearly fiat, and when so 5 compressed will occupy but little space as compared with a spiral spring having an equal range of eifective action.

The general construction and design of the improvement aifords a shapely tool, that is compact and strong as well as convenient and reliable in service.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-- 1. In aslidingjaw wrench, the combination, with a lever bar having a fixed jaw, and a spring-pressed sliding jaw having a fixed rack within it, of a movable rack the teeth of which mate with the teeth of the fixed rack, said I I0 rack having a loose dove-tailed connection with the lever bar, whereby the rack is secured to but is free to slide on the lever bar and a device to slide the rack, substantially as described.

2. In a slidingjaw wrench, the combination, with a lever bar having a fixed jaw on one end, and a screw-threaded formation between its ends, a spring-pressed, apertured sliding jaw having a fixed rack within its aperture, 120 and a movable rack having a sliding dovetailed connection with the lever bar, and a lateral toe at one end,of a sleeve nut on the screw formation of the lever bar, and having a circumferential groove engaged by the too 12 5 of the rack, and also having a circumferential flange that has a loose locking engagement with a transverse groove in the movable rack, substantially as described.

3. A wrench, comprisingalever barliaving 1 o SCI a jaw atone end and a handle at the other, a tion of the lever bar and having a loose conrack having a loose dovetail connection with nection with the rack of the said lever bar, 10 the handle bar, a sleeve having a jaw at one substantially as herein shown and described. end and a rack on its interior adapted to engage the rack of the lever bar, a plate spring ALF LAUBERT WINGE' having one end secured to the interior of the Witnesses: 4 sleeve and its free end bearing on the lever JOHN P. DEENY, bar, and a nut mountedon a threaded p0r-' O. F. SMITH.

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