US130471A - Improvement in rock-drilling machines - Google Patents

Description

D. w. BRICKER.

improvement in Rock-Drilling Machines.

Patented Aug. 13,1872.

Witnesses PATENT CDEEICE.

DAVID w. BEIcEEE, 0E CLAY Lick, PENNSYLVANIA.

IMPROVEMENT IN ROCK-DRILLING MACHINES.

Specification forming part of Letters Patent No. 130,471, dated August 13, 1872.

To all whom it may concern:

Be it known that I, DAviD W. BRIGEER, of Clay Lick, in the county of Franklin and in the State of Pennsylvania, have invented certain new and useful Improvements in Stone- Drilling Machine; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing and to the letters of reference marked thereon making a part of this specification. 4

The nature of my invention consists in the construction and arrangement of a stonedrilling machine, as will be hereinafter more fully set forth. A

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure lis a front elevation, and Fig. 2 a

side view, of my machine. Fig. 3 is an en larged view of the drilLshaft with devices attached to the same, and Fig. 4. is a section of the frame. D

A A represent two standards, each having a suitable foot or bed piece, and the two bedpieces connected `bv a cross-bar. In the upper ends of the standards A A is pivoted a frame, B, consisting merely of two side pieces` and atop bar, the.frame being open at the lower end. The two side pieces of the frame B are grooved longitudinally on their inner sides, and in the same moves a gate or frame,

C, this frame having tenons a on .their sides fitting in the grooves in the side pieces of the frame B. Through holes in the top and bottom bars of the frame C passes a sleeve, D, provided with a circumferential flange, b, at its upper end to prevent it from passing down through the frame, and wings i t pass downward from said flange through grooves in the top bar of the frame C to-prevent the sleeve from turning, but still allow it to move up r and down. The interior 'of the sleeve D is 4 running through a hole in the top bar of the swinging frame B. Through the side of this sleeve H is passed a set-screw, d, which goes into a groove, e, running lengthwise of the shaft E for a suitable distance. At the upper end of the sleeve H is a hand-wheel, I, by means of which the sleeve is turned to feed the drill-shaft up or down through the sleeve D by means of the screw d entering the groove e, while these parts allow the shaft to move up and down without moving the sleeve or wheel. At the upper end of the swinging frame B, on one side, is an additional frame, B', within which is placed a large cog- Wheel, J, turned by a crank, K, attached to the outer end of its shaft. This oog-wheel J gears with a pinion, f, upon the end of a crank-shaft, L, having its bearings in boxes upon the swinging frame, and provided on its other end with a ily-wheel, M. The crankshaft L is, by a pitman, N, connected with the sliding frame or gate G, and thus the same, with the drill, obtains a rapid reciprocating motion. Around the sleeve D is placed a'spiral spring, h, the ends of which bear against the top bar of the frame O and a collar or shoulder, s, on the sleeve. The object of this spring is to cause the drill to give a yielding blow and prevent the breaking of any part of the machine by the concussion.

The drilling may be done at any angle desired by adjusting the swinging frame B between two curved arms, P P, projecting forward from the standards A A, and holding said frame between them vat any point by screws m m. The swinging frame is also supported by pivot-ed braces R R.

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

1. AThe hollow screw-sleeve D, provided with iiange b, wings t' t', and shoulder s, in combination with the spring hand screw drillshaft E, substantially as and for the purposes herein set forth.

2. The combination of the posts A A, swinging frame B, curved arms P P, set-screws m m, sliding frame C carrying the drill-shaft E, crank K, gears J f, crank-shaft L, and pitman N, all constructed and arranged substantially as and for the purposes herein set forth.

3. Incombinationwith the adjustableswing- In testimony that I claim the foregoing I ing frameB and sliding or reciprocating frame have hereunto set my hand this 9th davy of C, operated by the means herein described, May, 1872.

the drill-shaft E, screw-sleeve D, spring h, DAVID W. BRICHER. sleeve H, and hand-wheel I, all constructed Witnesses:

a-nd arranged substantially as and for the pur- J oHN SMITH,

poses herein set forth. PATTERSON BRUBAKER.

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