US111265A - Improvement in rock-drills - Google Patents

Description

11. & J. SHOEMAKER.

' DRILL.

110'. 111265. Patented Jan. 24- 1871.

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HENRY snonMAKEnfA DJoHN SHOEMAKER, or PUTNEYV-ILLE,

' PENNSYLVANIA.

Letters Patent No. 111,265, dated January 24, 1871.

IMPROVEMENT m ROCK-DRILLS.

To all whoni it army concern:

Be it known that we,-HnNnY SHOEMAKER and J OHN SHOEMAKER, of lutneyvil'le, in the county of Armstrong and State of Pennsylvania, have invented anew and useful-Drill for Drilling Goal, Slate, and Sand-Rock, and other minerals; and we do hereby declare that the following is a full, clear, and exact description thereof, sufficient to enable those skilled in the art to which our invention appertains to make and use the same, reference being had to the accompan ying drawing making part of this specification, and to the letters and figures marked thereon. Our invention relates to means for holding and operating drills, and consists in a novel construction and combination of devices intended to serve as an e-fi'ective apparatus for securing a drill in position,.and rendering it easily removable and attachable.

In the drawing- Figure 1 is a longitudinal elevation, showing a drill inserted in thetube, but not locked.

Figure 2 shows the position of. the parts when the drill is locked. v

Figure 3 is a longitudinal view, partly in section.-

Figure 4 is a transverse section, taken in the line a; x of fig. 1.

Figure 5 is alongitudinal view, partly in section, showinga drill inserted but not locked. I

Figure 6 is a longitudinal view, partly in section, showing the drill locked.

Figure 7 is a transverse. section, showing the position of the lower. hand or sleeve when the drill is locked.

Figure 8 is a transverse section, taken in the line 3 y of Figure 9 is a side view, and

Figure 10 an edge view of one of the drills.

The tube A is made of any suitable metal and of any desired length and-diameter, and has formed on one end a male-screw thread corresponding with fe male-screw threads formed on two bands or sleeves,

B and (l. The outside of the sleeves B and 0 may either be milled or made polygonal in form, so as to be turned by a wrench.

On the outside of the tube A, diametrically opposite to each other, are grooves,- q', extending the entire length of the space occupied by the screw-thread; and immediately adjoining the grooves aare notches or slits, a' extending about .one-hali'thc length of the space occupied'by the screw-t ln'ead.

On the inside of the band 'or sleeve C, opposite each other, are grooves 0, corresponding in width with the notches or slitsn.

' -The width of the notches or slits a, and of the grooves 0, correspond with the-thickness of the drills. The band or sleeve B may be of any desired width; but we find that, if made about one-third the width of the band C, it will accomplish the purpose for which it is intended.

Sliding in the grooves a are keys K, formed with two shoulders, k 7., just far enough apart to allow the sleeve B to wo 'k easily between them.

The drill D is formed with two shoulders, (l d, on each side, far enough apart to allow the sleeve 0 to work between them.-

On the inside of the tube. A, near the termination of the slitsta a shoulder is formed by making the bore of the tube larger above that point than below it. This shoulder forms a valve-seat for a valve opening upward. I

Any suitable form of valve may be used, but the form we prefer, as being the most simple and economical, consists of a plain metallic disk, F,-which rests upon the shoulders-inside of the tube, "and is prevent ed from rising too far .by pins 7, placed diametrically across the tube.

In adjusting the parts for use the band B is screwed on the tube A until it nearly reaches the termini of the. slits a'.. i

The keys K are then placed in the slits 0 until the shoulders I; engage with the band B, and then turned so as to slide in the grooves a, and the band B is screwed on to near the terminus of the screwthread.

The sleeve 0 is then screwed on until it nearly reaches the termini of the slits a and the grooves c, placed so to form a continuation of the lines forming the sides of the slits a. Y

The drill is then inserted in the slits a, and the sl'eeve 0 turned so as to bring the grooves c in a line with the grooves (I, the sleeve 0 passing between the shoulders (Z (I. a r

The sleeve B is then unscrewed, forcing the keys K into the spaces bounded by the grooves a and grooves o, lockingthe drill and holdingthe parts securely.

By the reverse motion of that just described the drills may be taken out, which will often be found convenient'ior the purpose of sharpening or to replace them with other drill-s of different forms.

in, using this drill, at every blow the valve F is i opened, and the sand and drillings are forced upward or outward, and are prevented from receding by the valve falling again to its seat upon the shoulder in the tube, so that it is not necessary to withdraw the drill to remove the sand and drillings until the tube becomes filled.

This drill may be used to advantage -in drilling oilwells, by attaching the drill to the sinker-bar'in the ordinary manner.

What we claim' as new; and desire to secure by Letters Patent, is-

The combination of the tube A, sleeves B and C,

grooves a (0, slots a a, and keys K K, substantially as and for the purposes specified.

' Witnesses:

JAMES W. QUOWN, A. Yosr.

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