US291578A - Coal-drilling machine - Google Patents

Description

2 SheetS -Sheet 1 (No Model.)

J. M. & JJW. DAVIES.

GOAL DRILLING MAGHINE.

Patented Jan. 8, 1884.

(No Model.) 2'She etsSheet 2.

M. & J. W. DAVIES. 7 GOAL DRILLING MACHINE.

N0. 29 1.578. Patented Jan. 8,188.4.

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A A'FUNNITED STATES PATENT JONATHAN M. DAVIES AND JOHN V. DAVIES, OF BRYAN, OHIO.

COAL-DR|LLING MACHINE.

$PECIFIGATION forming part of Letters Patent No. 291,578, dated January 8, 1884.

Application filed May 15, 1883. (No model.) 7

' To all whom it may concern.-

Be it known that we, JONATHAN M. Dnvrns and J ornv W. DAVIES, citizens of the United States, residing at Bryan, in the county of lVilliams and State of Ohio, have invented certain new and usefulImprovementsin Goal- Drilling Machines; and we 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 hadto theaccompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

Our invention relates to improvements in coal-drilling machines; and it has for its obj ect the provisionof asimple, durable, and eas ily-operated drill, that, although particularly designed for the use of coal-miners,may be adapted for use in mines of different character, or in tunneling. y

To the accomplishment of the above-named objects it consists in a suitable frame provided with means whereby to secure it in ver-' tical position in shafts of mines or tunnels, said frame being further provided with a screw-threaded drilling-bar, having a head for the reception of the drills, said bar having ro- I tary and longitudinal motion imparted theret0,by means hereinafter described and claimed, for the purpose of projecting the boring-bit forward and into the coal or other material to I be drilled.

It further consists in means whereby the drilling-bar may be returned to its normal position, thus drawing the drill backward and out of the hole alreadybored.

It further consistsin means whereby the boring-bar may be set and caused to move forward at different angles with reference to the mass of material to be drilled, without moving the frame from its vertical position; and it finally consists in the construction, arrangement, and combination of the various parts, substantially as hereinafter described and claimed.

Referring to the accompanying drawings,in which similar letters of reference denote similar parts,Figure 1 represents a side elevationiof our invention in position for use. Fig. 2 represents a front elevation thereof. Fig. 3 represents a transverse sectional view of the frame, taken on the line on w of Fig. 2. Fig. 4 repre sents a front elevation of the bit-holding head. Fig. 5 represents a longitudinal section of the bit-holding head, taken on the line 3 y of Fig. 4. Fig. .6 i represents an enlarged sectional view taken on the line 1 1 of Fig. -1, the spurrepresents the rotary sleeve upon which is mounted the main spur-wheel.

In the drawings, A represents a frame, consisting of two side pieces, joined together at top and bottom by blocks a and bolts (4', that pass through the side pieces and interposed blocks, a. We preferably make the entire frame A of wood; but, if desired, said frame may be formed of metal. r I

B B represent metal frames consisting each of two side bars joined together at their outer ends by cross-bars b b, as shown. The side bars composing the frames :13 B move and slide in grooves b formed in the inner sides of the side pieces of the frame A. The inner free ends of the frames B B, when pushed in to the frame A, pass each other in the groove b, as shown bydotted lines in Fig. 2, and said frames B B are held in position by removable pins ad, that pass through the sides of the frame Aat top and bottom, and enter apertures I) in the frames B B. The endsb b of the frames B B are provided upon their inner sides with bosses b", and said ends and bosses are provided with apertures having female screws cut therein, through which pass male screws 0. Said male screws are each capable of being turned out to a considerable distance, and are each provided with heads 0, having apertures c for the reception of a handle or lever, 0 whereby the screws are turned.

G represents metal blocks or shoes interposed between the heads of the screws and timbers 0 C placed, respectively, at the top and bottom of the mine-shaft.

From the above-described construction it will be seen that the frame A and its attached mechanism may be firmly fixed in position in shafts of different heights, it only being necessary to move the frames 13 B into or from the frame A.

D represents a casting chambered out or hollow from end to end, as shown at (Z. The casting D is provided upon its opposite sides and near its rear end with trunnions D, said trunnions entering apertures in the opposite sides of the frame A, and pivoting or hanging the casting D in said frame. D' represents a fiat curved bar, attached at eachend to the under side of the casting D.

. The bar ,D is provided with apertures d for the purpose of adjusting the casting D at different, angles, said casting being held at the required angle by a pin, cZ, that passes through theside of the frame A and through one of The chambered portion (1 of the casting D is provided atone end (the rear end) with small flanges (Z1, said flanges projecting from the opposite interior side walls of such chambered portion d. The flanges d extend forward to a point I 'D, projecting from the casting D.

opposite the trunnions D, while for a similar distance the upper and lower inner surfaces of the chamber (Z is cut away to a depth greater than the remaining portion of the chamber cl, thus presenting an aperture elliptical in cross- Section, provided at each side with the flanges d, as shown in Fig. 9. The object of this construction will be presently explained.

. E represents a sleeve placed within the rear end of the casting D in the elliptical-shaped chamber thereof. The sleeve E is formed in two parts or halves,e e,and each of said halves is screw-threaded upon its inner surface, as shown in Fig. 8. The halves of the sleeve E are further provided upon their outer sides, at their points of juncture,with grooves e, for the reception of the flanges d, as shown in Fig. 9. The parts or halves of the sleeve are moved toward or from each other by set-screws e", the elliptical shape of the chamber (Z at this point admitting of such movement. The opposite end of the castingD is provided with a rotating sleeve, F, secured within the aperture din said casting by a pin, f, that passes through the casting and enters a groove, f, cut into the sleeve F. The outer end of said sleeve is made smaller .from a point corresponding with the end of the casting, and is provided with ascrewthreaded portion, as shown in Fig. 11. Upon such smaller portion of the sleeve is secured, by a nut, a bevel-toothed spur-wheel, G, the teeth of which engage with and are driven by the teeth upon a second spur-wheel, H,

mounted upon the outer end, D, of an offset, The wheel H is provided with a handle, H, whereby the machine is operated.

K represents a screw-threaded bar that passes through the sleeves E and F. The bar K may be of any desired length; but we preferably make said bar of such length as will admit the bit-holdin g heads K,secured upon each end of said bar, to move about twenty-four inches endwise. The screw-threaded bar K 18 provided at each end with heads K, each of which is provided with an aperture to reoelve the shank of the boring-tools, set-screws k holding such toolsin positioninthehead. The bar K is further provided with a longitudinal slot, k,extending from end to end thereof, into which extends the inner end of a pin, it, that extends through one side of the sleeve F. In lieu of the pin in the sleeve, said sleeve may flange, or may be provided with a key-seat,

having a key or spline that engages with the slot in the bar K. The object of such pin, key, or spline is to cause the bar K to be rotated by the sleeve F and its attached spur-wheel G, while said bar is free to move or to be moved longitudinally by the non-rotating screwthreaded sleeve E. V L represents the tool-holding head, in form as shown in Figs. 4 and 5. Said head isprovided upon its rear end with a projecting shank, L, that enters an aperture in the bitholding head K. The head L is provided with any desired number, preferably six, of apertures, Z, rectangular in cross-section, and tapering from front to rear. The apertures Z are for the reception of shanks of cutting-tools Z. The forward ends of said tools are provided with beveled ends Z", that out into the coal when the holder L is rotated.

Z represents a center drill, the shank of which fits into an aperture, Z, in the center of the tool head or holder.

The operation of our improved drilling-ma chine is as follows: A first being fixed in a vertical position by means of the lengthening? frames B B and screws 0 at the place where the drilling is to be done, the screw-threaded halves e e of the sleeve E are by the screws 2 drawn out of engagement with the screwthreaded bar K, and the latter. drawn backward its full length. The screwthreaded halves e e of the sleeve E are again brought into connection with the bar K. Rotary motion is now imparted to said bar by means of the spur-wheelsH and G and sleeve F, and as the threaded sleeve E is by the flanges cZ prevented from 'rotating,said sleeve will cause the bar K to move forward, as will be readily understood. When the full length of the bar has been fed forward by the sleeve ,1], said sleeve may be moved out of connection withthe bar, the latter drawn back, new sections of drillrods inserted, and the abovedescribed operation resumed. As before stated, the casting D may be set at different angles with reference to the substance to be drilled, and this being formed at the same angle.

Having thus described our invention, we

claim and desire to secure by Letters Patent substances, the combination of the framehaving sides provided upon their inner surfaces with grooves b*, said sides held in parallel planes by blocks a, sliding frames B B.screws 0, provided with head-blocks G, with the casting D, provided with trunnions D, whereby the said casting is jonrnaled to the side pieces of the frame A, said casting further provided with curved bar D, whereby it is set at differ- 2. In a drilling-machine for coal and other substances, the combination of the frame A, having grooves 1) upon the inner surfaces of its side frames, sliding frames 13 B, having apertures b and held in place within the frame A by pins (4 adj Listing-screws O, with the casting D,'provided with trunnions D, journaled in the side pieces of the frame A, and curved bar D fixed screw-threaded sleeve E, rotating sleeve F, bevel-geared spur-wheels G and H, and screw-threaded bar K, substantially as described.

3. In a drilling-machine for coal and other substances, the sleeve E, divided longitudinally into two equal parts, c c, said parts having their inner surfaces screw-threaded, and further provided upon their outer surfaces with recesses or-grooves 6 in combination with the casting D, having chambered portion d, provided at the sides adjacent to said sleeveE with flanges d, and further having the upper and lower sides, (1 adjacent to said sleeve chambered out, and provided with screwthreaded apertures, through which pass screwthreaded pins 0", whereby the halves e e are adjusted, sleeve F within casting D, screwthreaded bolt K, passing through sleeves E and F, bevel-geared spur-wheels G and H, and frame A, substantially as described.

4. In a drilling-machine for coal and other substances, the combination of the rotating sleeve F, having groove f, into which projects a pin, f, and further provided with a pin, is, or its equivalent, a key or spline that engages with the longitudinal groove 70 in the screwthreaded bar K, with the screw-threaded bar K, havingthelongitudinalslotk, and provided with bit-h'oldin g heads K, casting D, frame A, and means, substantially as described, whereby said bar K is operated, as herein set forth,

In testimony whereof we affix our signatures in presence of two witnesses.

JONATHAN M. DAVIES. JOHN W. DAVIES."

Witnesses:

ROBERT A. Soorr, JOHN W. LEIDIGH.

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