US1025739A - Holding-vise attachment. - Google Patents

Description

c. H. A. DAVIS. HOLDING VISE ATTACHMENT.

CHARLES HENRY ALEXANDER DAVIS, 01! SAN RAFAEL, CALIFURNIA.

HOLDING-V1815 ATTACHMENT.

Specification of Letters Patent.

Patented May '7, 1912.

Applicatior dled October 27, 1910. Serial No. 589,503.

To all whom it may concern Be. it known that I, CHARLES I'IENRY ALEXANDER DAVIS, a citlzen of the United States, residin at San Rafael, in the county of Marian an State of California, have invented new and useful Improvements in Holding-Vise Attachments.

My invention relates to an attachment for holding vises.

It consists of a pair of supplemental jaws adapted to fit between the main permanent jaws of the vise, and having the backs or contacting surfaces of said jaws made convex and with suitable supporting flanges. The inner faces of the jaws consist of interlocking In with suitable gripping surfaces; the o ject of the jaws being to enable them to automatically engage taperin or irre lar forms without change in the aws of tie main vise.

It also comprises details of construction which will be more fully explained by reference to the accompanying drawings, in which- Figure 1 is a plan view showing the application of my invention to an ordinary vise. Fig. 2 is a side elevation. Fig. 3 is a pers ective view of the separated jaws.

T ese jaws may be applied to any vise having plain, straight aws such as indicated at A. The jaws 2 may be also made of an suitable material for the purposes for w ich they are to be used. The vertical back portion 2' -of each jaw rests against the corresponding vertica straight face of the vise, and these faces 2 are convexly curved so that if a tapering or irregular article is to be held between the jaws, the closing of the vise will cause these jaws to automatically adjust themselves so as to preserve an even grip upon the whole of the surface, thus a tapering or wedge-shaped article may be held between these jaws which will grip it firmly from end to end.

In order to retain the jaws in place, I have shown lips or flanges 8 which project from the top above the convex surfaces, and these lips or flanges resting upon the top of the vise will prevent the su plement-al jaws from falling out when t e vise is open.

The interior faces of the jaws are made with projecting tongues 4 alternating so that when the jaws are closed together these tongues interlock. The inner surfaces of the tongues may be made concave, as shown at 5, and may also have these concave surfaces corrugated or made to grip with a firm hold. If a lar e article is placed between these jaws an the vise closed, it will be seen that the curved backs of the jaws will cause them to incline with relation to the article which is being held; thus a tapering rod will be held firml between the aws, which, if the article is arge, will not lnterlock at all. If the article 1s small the teeth will interlock, and they may interlock to such an extent that the smallest wire will be firmly gripped between them. A pair of these aws may be fitted to any vise and thus render it serviceable for firmly holding tapering or irregular forms without mutilating the faces of the main jaws or making any permanent attachment for the supplemental jaws.

Having thus described my invention, what I claim and desire to secure by Letters Patent is- 1. The combination with a vise havin parallel jaws, of a pair of supplementa jaws having horizontally convex backs and overhanging flanges, and vertical, concave, corrugated. and interlocking lugs projecting from the inner faces of said jaws.

2. Su plcmental holdin jaws, having convex backs adapted to t between plain vise jaws, lips or flanges projecting from the upper portion to rest upon the to s of the vise jaws, and interlocking lugs orming the inner ippin surfaces of said jaws.

3. Indepen out he ding jaws for vises, said jaws having convex backs and overhangin lips to contact with and be sup ported y the main jaws. and interlocking ton es forming the holding portions of sfai jaws and aving concave, corrugated aces.

CHARLES HENRY ALEXANDER DAVIS.

Witnesses:

Sam J swam. DAVIS, Eva A. Lrou.

00 m of this patent my be obtained for an cents each, by addressing the commissioner of .htenh, wuhlnzton, D. 0.

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