US121315A - Improvement in rock-drilling machines - Google Patents

Description

NATHAN BALL &J. A. STANSBURY.

Improvement in Rock DriHing Machines.

No. 121,315. I Patented Nov- 28,1871.

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\ v dim 4a UNITED STATES PATENT OFFICE.

NATHAN BALL, OF EAST PALESTINE, AND JOSEPH A. STAN SBURY, OF SALEM, OHIO SAID STANSBURY ASSIGNS HIS RIGHT TO SAID BALL.

IMPROVEMENT IN ROCK-DRILLING MACHINES.

Specification forming part of Letters Patent No. 121,315, dated November 28, 1871.

To all whom it may concern:

Be it known that we, NATHAN BALL, of East Palestine, and J OSEPH A. STANSBURY, of Salem, in the county of (lolumbiana and in the State of Ohio, have invented certain new and useful Improvements in Coal and Rock Drilling Machines; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawing making a part of this specification, in which- Figure 1 is a side elevation of our device. Fig. 2 is a front elevation of the drill-head. Fig. 3 is a rear elevation of the same. Fig. 4 is a horizontal section of the standard on the line w m a: of Fig. l, and Fig. 5 is a plan view of the lower side of the drill-stock and feed-rack.

Letters of like name and kind refer to like parts in each of the figures.

The object of our invention is the production of a simple, efficient, and cheap device for drilling rock, coal, &c., and it consists, principally, in the peculiar construction of the drill-standard whereby the same may be quickly adjusted to any desired length, substantially as and for the purpose hereinafter'specified. It consists, further, in the means employed for attaching the drill-stock to and rendering the same radially adjustable upon said head, substantially as and for the purpose hereinafter shown. It consists, finally, in the means employed for imparting a longitudinal or feeding motion to the drill-stock and drill, substantially as and for the purpose hereinafter specified.

In the annexed drawing, A represents a metal pipe closed at one end by means of a head, B, and having at and immediately above its opposite end an exterior screw-thread, a. Fitted to or upon the threaded end of the pipe A is a metal sleeve, 0, the outer end 0 of which has an interior diameter corresponding with the diameter of said pipe, while the balance of said sleeve corresponds in interior dimensions with the exterior of the latter, and is provided with an internal screw-thread that is similar to and engages with the exterior screw-thread of the same. Fitted loosely within the sleeve 0 and pipe A is a corresponding metal bar, D, having a slight points longitudinally upon said bar, pass transversely through the same, and may each be caused to coincide with a similar hole, 0, that is provided in and through the outer end of the sleeve 0, so as to permit of the insertion within. said holes a and d of a pin, E, so as to secure said sleeve and bar in their relative longitudinal positions. The outer face of the head B being serrated, this portion of the device which forms the standard or support for the operating mechanism is complete and operates as follows: The pin E being removed, the head B is placed against the roof of the mine and the bar D allowed to drop downward until its outer end rests upon the floor of the mine, after which said bar and the sleeve 0 are locked together by the replacing of said pin within the openings 0 and d, and said .sleeve unscrewed upon or from the pipe A until the point 0 and head B are pressed with sufficient firmness against said roof and floor to hold the standard in position. Fitted loosely to or upon the standard is a head, F, composed of a rectangular block of metal provided at one side with a set-screw, G, which passes inward and bears against said standard so as to permit the same and said head to be secured in any desired relative positions. Upon the opposite side of said head from the set-screw are two lugs, f, within which is journaled a hollow shaft, H, to or upon one end of which is secured a metal plate, I, which has a general size and shape corresponding to that of the contiguous face of said head, the whole being so arranged as to enable said plate to revolve upon or with said hollow spindle in a plane parallel to the line of said standard. A box or bearing, K, provided with a round opening, is rigidly attached to or upon the outer face of the plate I for the purpose of receiving the drill-stock L, which stock is formed of a round bar provided at one end with a socket for the reception of the shank of the drill M, while upon the opposite end of said drill-stock is secured a crank, N, by means of which the same and said drill are. rotated when desired. A pin, l, passing through the socket end of the stock and through the shank of the drill firmly secures the same together, while a second pin, 0, passing inward through a corresponding opening provided in and through the plate I, with its inner end engaging with one of a series of similar openings, 0, formed within the contiguous face of the head, enables said plate to be secured in radial position, so as thereby to insure any desired angle of the drill with relation to the standard.

In order that the necessary feed may be given to the drill-stock and drill a right-angled groove, 1', is out within the outer face of the plate I, immediately beneath and in a line with said stock, which groove receives a corresponding metal bar, P, one end of which is connected with said stock immediately inside of the crank by means of a lug, 12, which embraces a reduced portion or journal of the same. The lower edge of the bar P is provided with a toothed rack, which meshes with a corresponding pinion, Q, that is secured upon one end of a shait, g, which passes through the hollow spindle H, and is provided upon its opposite end with a crank, 1%. As thus arranged it will be seen that by rotating the shaft q and pinion Q, the rack-bar and drill-stock will be moved longitudinally within their bearings so as to cause the drill to approach to or recede from the rock being operated upon.

The device thus constructed is capable of use in any place where similar mechanism is employed, can be adjusted to or removed from position in a moments time, and enables the operator to pierce the rock at any desired angle or at any point between the roof and floor of the mine 5 and, while possessing these advantages, is so simple in construction as to cause it to cost materially less than similar devices in ordinary use.

Having thus fully set forth the nature and merits of my invention, what I claim as new is- 1. The pipe A, threaded exteriorly upon one end, and provided at its opposite end with the head B, the iuteriorlythreaded sleeve 0 fitted over the end of said pipe, and the bar D fitted within said pipe and sleeve and connected to or with the latter by means of the pin E, the whole forming the drill-standard, substantially as speciiied.

2. The shatt H, the plate I, the box K, the pin 0, and the holes 0, in combination with the drillhead F and with the drill-stock L, substantially as and for the purpose shown.

3. The rack-bar P, pinion Q, shaft q, and crank B, when the several parts are constructed as described, and combined with the drill-stock L and drill-head F, substantially as and for the purpose set forth.

In testimony that we claim the foregoing we have hereunto set our hands this 26th day of July, 1871.

NATHAN BALL. JOSEPH A. STANSBURY.

Vitnesses .lt. H. G-ARRIGUEs, N. B. GARRIGUES. (124-)

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