US548324A - Rock-drill - Google Patents

Description

3 Sheets-'Sheet 1.

(No Mogel.)

H. BQMOCABB.

ROCK D RILL.

Pat'entedOct. 22, 1895,

V Mr, Li 1 LUM lull Lulllr INVENTOR HAB. Cabe.

ATTORNEY @unam s nmummgmqmgagmymmus (No Model) 3 sheets-sheetv 2.

H. B. MGC-ABE. Y vR061( DRILL. l No. 548,324. Patented Dot.. 22, 1895.

IN VENT 0R H 5. /V-C Cabe By- ATTURNEY s sheets-sheet 3.

H. B. MCCABE.

yROCK DRILL. v

. Patented 001;. 22, 1895.

(No Model.) No. 548.324.

INVENTOR h. B. Mc Cabe AITORNEY Diarree STATES PATENT OFFICE.

HORACE B. MCCABE,`OF LAKEWOOD, COLORADO.

ROCK-DRILL.

SPECIFICATION forming part of Letters Patent No. 548,324, dated October 22, 1895.

Application led December 26, 1894. Serial No. 532,907. (No model.)

To all whom it may concern,.-

Be it known that I, HORACE B. MCOABE, a citizen of the United States of America, residing at Lakewood, in the county of Jefferson and State of Colorado, have invented certain new and useful Improvements in Rock-Drills; and I do declare the following to be a full,

clear, and exact description of the invention,-

such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in rock-drills; and it consists of the features, arrangements, and combinations hereinafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a side elevation of my improved drill. Fig. 2 is a longitudinal section taken on the line C C, Fig. 1. Fig. 3 is a section taken on the line D D, Fig. 1. Fig. 4 is a section taken on the line V V, Figs. 1 and 2, looking toward the right. Fig. 5 is a section taken on the line Z Z, Figs. 1 and 2, looking toward the left. Fig. 6 is a section taken on the line W W, Figs. 1 and 2. Fig. 7 is a section taken on the linec't', Fig. 8. Fig. Sis a section taken on the line g g, Fig. 7. Fig. 9 is a section taken on theline h h, Figs. 1 and 2. Fig. 10 is an end elevationofthe drill shown in connection with the supportingcolumn. Fig..11 is a section taken on the line B B, Fig. 10, looking toward the right, the parts being shown on a larger scale. Fig. 12 is a fragmentary longitudinal section of the horizontal shaft attached to the column.l Fig. 13 is a vertical section taken through the foot of the column. Fig. 14 is a section taken on the line A A, Fig. 13. Fig. l5 is a section taken through the tension-cap of the drillcasing. Fig. 16 is a cross-section taken on the line S S, Fig. 15. Fig. 17 is a section taken on the line p p, Figs. 1 and 2.

Similar reference-characters indicating corresponding parts or elements in these views, let the numeral 5 designate the drill-casing, having the base 5a, fashioned to fit the track 6, having the toothed rack 6a. The bottom of this track is dovetailed to iit a socket 7- of corresponding shape made in a cross-head 7, formed on one extremity of a horizontal bar 7. This bar ishollow, and the opening therein registers with an opening in the crosshead extremity at right angles to `the dovetailed socket 7a. In this opening of the crosshead is inserted a keeper 8, having a socket 8a, adapted to register with the socket 7a'. The keeper 8 has a threaded extremity protruding from the cross-head. The function of the keeper is to lock the track on the bar 7, and this is accomplished by applying a nut to the threadedextremity of the keeper and screwing it to engagement with the cross-head.

It is evident that the track may be securely locked on the bar in this manner.

The column 9 is provided with a base 9, which is fastened to a foot-block 10 by a pin 12. In the base of this block is formed a socket, which receives a counterpart-lug 10', formed on the foot-block. The base of the column rests upon the lug 10a of the' foot-block,

while there is a space between the base of the block and the base of the column whereby the colmn may occupy a position inclined to the plane of the foot-block. The bottom of the foot-block is provided with ball-supports 10, which engage sockets 10d of the block.

To the column 9 is applied a two-part clamp 13, secured to the column by means of a screw inserted in coinciding threaded apertures formed in the lugs of the clamp parts. Formed vintegral with one part of this clamp is a lug .14, having a clutch-face formed thereon to engage another similar face formed on a hanger 15, which is fastened to the lug by a screw 16.

Upon the lower part of this hanger is formed -trudes through the tension-cap 2O and is pro- IOO requires that the power necessary for forcing the hammer against its spring be suddenly expended, otherwise one cam would catch the hammer before it was released by the other, which of course would make the construction inoperative.

I do not limit my invention to the construction and larrangement of the hammer parts herein shown and described, as I am aware that other forms may be employed without departing from the spirit of the invention.

The tension-cap 2O is provided with interiorly-projecting lugs 20a, which engage slots 5S, formed in the shell ot` the casing. The cap is locked in place when properly adjusted by giving it a partial rotation, whereby the lugs 20a are made to engage notches 5", formed along the edges of the slots and communicating therewith.

Having thus described my invention, what I claim isl. In a rock drill, the combination with the casing, the chuck, the bit and suitable operating cams, of a hammer comprising two independently operated parts, one being hollow and surrounding the other which telescopes `therein, and both being always in line with the chuck stem, substantially as described.

2. In a rock drill, the combination with the casing and operating cams, of the hammer comprising two independently operated parts, one being hollow and surrounding the other which telescopes therein and both operating on the same drill bit, substantially as described.

3. In a rock drill, the hammer comprising two independently operated reciprocating parts, one being hollow and surrounding the other which telescopes therein, substantially' as described.

4. In a rock drill, the combination with the casing and operating cams, of a hammer comprising two independently operated, springactuated parts, one being hollow and surrounding the other which telescopes therein, substantially as described.

5. In a rock drill, the combination with the casing and operating cams, of a hammer comprising two independently operated parts, one being hollow and surrounding the other which telescopes therein and a hseparate spring acting on each part, substantially as described.

6. In a rock drill, the combination with the casing, the track having the toothed rack, and the worm block journaled in the casing and engaging the rack, of the auxiliary cam, the rod eXteriorly mounted on the casing, a coil spring surrounding said rod which is provided with a lug lying in the path of the auxiliary cam, `a ratchet collar made fast to vone eX- tremity of the worm block, a dog engaging the teeth ofA said collar, and a lever having one extremity engaging the dog, and the other extremity slotted to engage the lug on the rod, substantially as described.

7. The combination with the drill ofthe upright column, the foot-block having a lug engaging a counterpart socket formed in the base of the column, a pin connecting the base ofthe column with the lug on the foot-block, there being a space left between the bottom ot the column and the base of the block, the clamp attached to the column, a hanger adjustably attached to the clamp, a bar clamped on the hanger, said bar being provided with a socket adapted to receive the track of the drill, and a keeper attached to the bar for locking the drill on the bar, substantially as described.

In testimony whereof I aflix my signature in the presence of two witnesses.

HORACE B. MCOABE. Witnesses:

A. J. OBRIEN, CEAS. E. DAWSON.

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