US307792A - Machine for channeling rock for grindstones - Google Patents

Description

(N0 Mode l.)

M. J, OOONNOIL MACHINE FOR OHANNBLING ROCK FOR GRINDSTONES, &c. No. 307,792. Patented Nov. 11, 1884.

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MICHAEL J. OOONNOR, OF LOUISVILLE, KENTUCKY.

MACHINE FOR CHANNELING ROCK FOR GKINDSTONES, 84C.

SPECIFICATION forming part of Letters Patent No. 307,792, dated November 11, 1884:.

Application filed July 30, 1884. (No model.)

To all whom it may concern:

Be it known that I, MIonAnL J. OOoNNoR, a citizen of the United States, residing at Louisville, in the county of Jefferson and State of Kentucky, have invented certain new and useful Improvements in Machines for Channeling Rock for Grindstones, &c. and I hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, in which Figure l is an elevation of a machineembodying my invention. Fig. 2 is a plan View, partly in section, of the revolving toolarm and mechani' s n for actuating the same. Fig. 3 is a top View of the adjustable base for column A. Fig. 4 is an enlarged detail View of the shaft 9 in section, loose pulley G, and clutch mechanism for causing the shaft g to rotate with the pulley when the drill rises.

Like letters refer to like parts wherever they occur.

My invention relates to the construction'of apparatus for channeling and quarrying grindstone and other circular-shaped stone out of the solid rock. 7

Heretofore, so far as I am aware, it has been the general practice to quarry the stone in irregular blocks, and then to reduce them to the proper or desired form by picking, spalling, and scabling. Such a procedure necessitates considerable labor and results in great waste of material, all of which it is the purpose of the present invention to avoid.

To this end the main feature of the invention consists in mounting the channeling-tool or drill upon a revolving arm, which arm rotates around a fixed axis, column, or post, so as to cause the tool to describe a circle while operating, thus quarrying the block in its ultimate form.

A second feature of the invention consists in actuating the rotating arm or tool-carrier from the drill, so that its movement will alternate with and be controlled by the drill, and the machinery be thus relieved from any strain consequent on the irregular action of either the arm or drill.

There are other minor points of novelty which will hereinafter more fully appear.

I will now proceed to describe my inven tion more specifically, sothat others skilled in the art to which it appertains may apply the same.

In the drawings, A indicates a column, post, or center support for the drill or channeler, provided with a base or platform, Y, to which it is secured, being strengthened by ribs, as at y, if desired. The column A extends through the base Y, and terminates in a rectangular foot, a, by means of which (and wedges or equivalent devices) it is anchored to the rock when in operation.

Projecting through the base Y are screws S S, by means of which the base and column may be adjusted, and pivoted to the column A are extension or sliding legs L L, which brace and stiffen the column A when properly adjusted.

Secured to the column A is a gear or worm Wheel, I, the object of which will hereinafter appear.

B indicates a revolving arm or tool-carrier journaled on the post or column A just over the gear or worm wheel I, and projecting at right angles thereto, which arm supports the channeler or drill G.

The channeler or drill 0, being no part of the present invention, may be of any appror'ed form.

The drill, whatever its character, should be so connected with the arm B, as at b, or otherwise, that it can be moved along the, arm to and from the columnAto increase or decrease the diameter of the stone to be quarried. Attached to the piston of the drill is the vertical rod D, having an eye, d, at each end, for securing the ends of a cord or band, E, which cord or band passes over guide-pulleys F and around a power-pulley, G. The power-pulley G is journaled loosely on a shaft, 9, which shaft is in turn j ournaled on the arm B, and provided with a worm or screw, H, which engages with the gear or worm wheel Ifattached to the column A. The loose pulley G is provided with a clutch so arranged that when the pulley is rotated by the rise of the drill-piston it clutches the shaft 9 and causes it and the wdrm or screw H to rotate with it, while in the reverse rotation of the pulley G it moves loosely on the shaft 9, and the shaft 9 can be held by a reverse clutch, if desired,

The construction being of the general character hereinbefore specified, the machine will be operated as follows: A square or rectangular hole, 1), is formed in the rock It to be quarried. The rectangular foot a is placed therein and tightly wedged therein by means of wedges w, the machine properly adjusted by means of the set-screws S S, and braced by adjusting the extension-legs L. The drill O is adjusted along the revolving arm 13 until the desired distance from the column A to give the required diameter of stone is obtained, and is then properly secured thereto. Power is then applied to move the drill-piston, which, as it rises through the medium of rod D and cord E, applies power to the pulley G. Pulley G in this movement clutches and rotates shaft 9 and its worm II, which as it gears with the fixed gear-wheel 1 causes the rotary movement of the arm B a short distance. When the piston of drill O descends, the pulley G rotates in reverse direction, moving loosely on the shaft and the arm 13, whether held by a reverse clutch or otherwise, remains sta tionary during the operation of the drill. When the drill next rises and falls, the above operations are repeated, and thus the drill is advanced in a curved path until the circle is completed.

Having thus set forth the nature, operation, and advantages of my invention, what I claim, and desire to secure by Letters Patent, is

1. In a machine for quarrying grindstones and like circular articles, the combination of a center post or column, a revolving drillcarrier journaled thereon, said post and carrier being provided with intermeshing gear, a reciprocating drill mounted on the carrier, and connections between the drill and gearing for transmitting the motion of the former to the latter, substantially as shown and described.

2. In a machine for quarrying grindstones and like circular articles, the combination of a center post or column, a revolving drillcarrier journaled thereon, said post and carrier being provided with intermeshing gear, a reciprocating drill mounted on the revolving drill-carrier, a clutch located upon the operating gear-shaft, and connections between the drill and clutch for operating the latter, substantially as shown and described.

3. In a machine for quarrying grindstones and like circular articles, the combination of a center post having a gear or worm wheel secured thereto, a revolving tool-carrier journaled on the center post, a worm, and a clutchpulley journaled on the revolving tool-carrier, a reciprocating drill, and a band or cord for imparting the movement of the drill to the clutch-pulley, substantially as and for the purposes specified.

4. In a machine for quarrying grindstoncs and like circular articles, the combination of the center post or column, A, having the worm-wheel I secured thereto, the revolving tool-carrier B, journaled on the column A, the WOIIHWhGEI H, having the clutch-pulley G, and journaled on the revolving tool-carrier, the reciprocating drill, the rod D, attached thereto, the guide-pulleys F F, and the rope or band E, substantially as and for the purposes specified.

5. In a machine for quarrying grindstones and like circular articles, the combination of a center post, A, the base Y, having a central perforation through which the post passes, the wedges w, the set-screws S S, and the revolving drill-arm journaled on the center post, substantially as shown and described.

6. In a machine for quarrying grindstones and like circular articles, the combination of a center post, A, the base Y, having a central MICHAEL J. O CONNOR.

\Vitnesses GEORGE M. DAVIE, J OHN MAsoN BROWN, XV. N. CALDWELL.

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