US519012A

US519012A - Drill for wells

Info

Publication number: US519012A
Authority: US
Publication date: 1894-05-01
Anticipated expiration: 1911-05-01

Description

(No Model.) 2 Sheets-Sheet 1.

- G. E. WYMAN.

DRILL FOR WELL S, &c. 4 No. 519,012. Patented May 1, 1894.

2 Sheets-Sheet 2.

(No Model.)

G. E. WYMAN.

DRILL FOR-WELLS, 4w.

' Patented' May I 1894.

FIG .4-

complete, from one side of the same.

UNITED STATES PATENT OFFICE.

CHARLES E. WYMAN, OFiMARTINSBURG, INDIANA.

'DRILL FOR WELLS, 86C- SPEGIFICATION forming part of Letters Patent No. 519,012, dated May 1, 1894.

Application filed October 31, 1892. $erial No. 450,522. (No model.)

- State of Indiana, have invented a new and useful Drill for Wells and Mineral Prospecting, of which the following is a specification. This invention relates to drills for well boring and mineral prospecting; and it has for its object to provide an improvement in drills of this character wherein the points thereof form an integral part of the drilling. tube, and at the same time is so constructed and connected with such tube as to not only possess great efficiency in drilling or reaming, but at the same time it is especially durable and inexpensive, in that it forms a part of the drilling tube and avoids the necessity of removing and specially securing the same to the tubes when threads break or wear. out on such tubes. I

To this end the invention primarily contemplates an improved construction of drill, and an improved method for the manufacture thereof.

With these and many other objects in view which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed.

In the accompanying drawings:Figure 1 is a perspective View of my improved drill Fi 2 is a similar view of the drill'from the op posite side thereof. Fig. 3 isa longitudinal secas the drilling of the hole advances, and said.

thickened tube section A, terminates at the other end thereof in a slightly enlarged integral or welded steel drilling head B. As stated the steel drilling head B, which forms the point or bit of the drill-is welded into the iron body of the pipe A, so as to form an integral part thereof, and said enlarged head B has the projecting sides thereof rounded so that the hole shall be drilled or bored perfectly round. One edge or face of the head B, is flattened as at O, to form the straight transverse cutting edge or point D, which forms the advance cutting edge for the drill. The opposite side or face of the drill, directly opposite the flattened side or face 0 is channeled or grooved deeply as at E, to form the opposite claw or chisel cutters F, which are at the opposite edges of the channel or groove E. The said opposite claw or chisel cutters F, which necessarilycut in the wake of the advance cutting edge D, serve to chisel off the edges of the opening formed by the edge D, and therefore cause the hole to be drilled perfectly round, thereby adapting the drill for use in entering sloping stones, where the old style of drills without the lateral claw or chisel cutters will fail to make an entrance. By this construction of drill a sharper point or cutting edge is more easily maintained as will be readily apparent to those skilled in the art. The central hollow bore of the pipe A, is extended into an'escape orifice or perforation H, which opens at its lower end on the flattened face of the drill head, and provides means whereby the cuttings or drillings can be pumped into the drill shaft or tube and out of the well in the usual manner. It Will be further observed by those skilled in the art that by terminating a section .of pipe in a Welded steel point, great advantage over the ordinary drills is derived from the fact that in the event of the thread breaking or wearingout, the operator can readily cut off the defective thread and make new threads with but little loss of time and without necessitating the removal of the drill point and sub: stituting another section of pipe.

In manufacturing the herein described drill, the section of pipe A, is flared intoa bell shape at one end as at X, shown in Figs. 4 and 5 The flared end X, of the pipe receives the extended rounded shank or stem Y, of the rectangular block of steel Z, which is'solid throughoutits length and forms the stock from which the specific shape of the drill point is turned. After shaping one end of the pipe, and the steel stock with a stem as described, the steel stem is introduced into the flared mouth of the pipe end, and the joint thus made subjected to a welding heat so that the steel stock can be welded into the pipe end and the pipe end onto the steel stock, so that for all practical purposes they form integral parts of each other. As clearly shown in Fig.4 of the drawings, the rounded shank or stem Y, is materially less in its diameter or width than the body of the block Z, from which it projects, so that the flared end X, of the pipe will fit onto the shoulder at the base of said shank or stem, and is sufficiently wide to come out flush with the sides of the block Z, whereby, during the process of welding the two parts together, the said flared end of the pipe can be easily worked off even with the enlarged block. This specific construction of the two members, to be welded together, forms a solidly constructed drill which, during the manufacture thereof, presents no snperfluons metal to be worked of, while at the same time being completely finished after welding, with the exception of forming the cutting portions thereof. Now having completed the head of the pipe, by shaping and turning in the usual manner, the steel head is shaped into. the form described, and the escape orifice or perforation drilled out, thereby entirely completing the drill herein depicribed, which possesses the advantages speci- Fig. 4 illustrates the pipe and the steel stock separated and Fig. 5 shows the two welded together preparatory to shaping the point of the drill. It may be further observed at this point that the solid block of steel Z, is of a rectangular shape so that the same is of a greater width than the diameter of the tube or pipe section A, and, even after the welding of the two parts together, retains this same greater width, so that the drill cutting edges can be properly out therefrom without weakening the strength of the drill at its cutting end. Therefore, by reason of the shape of this block and the greater relative size of the same with respect to the pipe A, the construction of the stock just described renders the same only available for use in the manufacture of a drill of the character claimed.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

In a drill for wells or mineral prospecting, the combination of a pipe or tube section terminating at one end in a solid integral drill or cutter head provided at one side with a flattened face, beveled at its lower end to form a straight transverse cutting edge D, a channel or groove formed longitudinally in the side or base oppositesaid flattened side and having its opposing outer edges beveled to form opposite side claw cutters adapted to follow in the wake of the straight transverse cutting edge, said opposing side claw cutters having a clear space there-between formed by said channel, and an escape orifice or perforation piercing the flattened side of the head opposite to the channel or groove and communicating with the interior of the pipe or tube, substantially as set forth.

In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.

CHARLES E. WYMAN.

Witnesses:

WILLIS G. HETI-I, OHAs. B. ELLIs.