US242734A - Mining-machine - Google Patents

Description

. B. moli. Mining Machine."

L e d 0 M 0 N fk Patented June 7,1881.

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oscillatory movement on the spindles c of the crank-formed axle C. The journal of the crank occupies a bearing-box, D, attached to the top of the valve-chest E upon the top of the cylinderF, thus forming the means of support of the cylinder and attached parts. As the cylinder is supported on the crank-axle the elevation of the cylinder may be changed by turning the crank up or down, and the relative position of the cylinder to the wheels may be otherwise changed by the same means. The wheel-spindles c of the axle are not made in one piece with the crank, but carry sockets c', in which the side arms, c2, of the crank admit of endwise adjustment to regulate the length of the crank, thus adjusting the distance between the box D and the spindles c, and consequently the relative position of the cylinder F and the wheels B. The arms c2 are secured in the sockets c' by set-screws c3.

To retain the crank to its adjustment rods G are provided, of which the sleeves G' (surrounding the spindles c within the wheel-hubs) form the forward ends. The arms G extend backward beside the cylinder, and have series of cavities g for the reception of the point of a set-screw, H. Said screw passes through a keeper, H', into one of the depressions g, and holds the arms, the ycylinder F, and the crank C firmly in their relative position, the three parts mentioned forming a sort of triangular brace. The arms G end at the rear in handles G2, by which the machine is moved.

Upon lthe wheels B are friction-rin gs I,which may be secured to the spokes, as shown, or to other part of the wheel, or may be cast upon it.

J is an arm extending from the sleeve G', and having on it a fulcrum lug or lugs, j, to which is hinged a brake-lever, K. The outer end of the lever carries a brake-shoe, k, which, when the top of the lever is in its backward position, bears upon the friction-ring and prevents the backward rotation of the wheel.

L is a spring, which tends to hold the brakeshoe down upon the ring by pushing the lever into its backward position. The brake-shoe is lifted from the ring I by drawing backward a rod, M, which is attached to the lower end of the lever, and which works in a standard, N, upon the arm or rod G. The rod M has an enlargement at m, which works in a suitable eye, u, at the upper end of the standard. At the lower side of the eye a is a notch or socket, n', of a size to receive the part of the rod in front of the enlargement. Vheu the rod is drawn back far enough the part of the rod before the enlargement may be dropped into the notch a', and the brake-shoe thus held away from the friction-ring I.

vThe compressed air enters the valve-chest E through a pipe, O, which may be provided withathrottle-valve. (Notshownnorclaimed.) The compressed air iills the valve-chest E and passes through a duct, P, from the valve-chest E, into the valve-chest R of the small engine S, which works the slide-valve V of the pickengine. The duct P is provided with a cock or valve, Q, to regulate the speed ot the small engine S, and, as a result, to regulate the speed of the pick -engine. By closing the valve Q bot-h engines may be stopped, thus rendering a valve in pipe 0 unnecessary. The pistonrod s of the engine S is connected by rod s' to a crank, t, upon a shaft, T, carrying cccentrics operating both slide-valves--that is to say, the slide-valve of engine S and the slide-valve V of thevpck-engine. The engine S contains no feature of novelty, being of a common form of reciprocating engine, and needs no particular description. The crank shaft T extends through the valve chest E, passing through stuffing-boxes in the sides of the chest.

U is an eccentric on the shaft T, connected by a rod, U', to the bar V', which connects together the members of the valve V. T is a flywheel on the shaft T. The slide-valve V has at each end a nat-faced lap-valve, n, and a D- valve, e', the former working in conjunction with the induction-ports F', and the latter in conjunction with the eduction-ports F2 and the' exhaust-ducts F3, the latter leading through the side of the cylinder-casting to the outer air. The eduction-ports F2 are some distance (say six inches,more or less) from the ends of the cylinder, so that they are c losed by the piston before it reaches the ends ot the cylinder, so that said ports are closed by the pist0n, and the imprisoned air forms a cushion for the piston at the ends of its strokes, to prevent the jar that might be occasioned by irnpingement against the heads ot' the cylinder. l prefer to form the eduction-ports F2 of a number .of small holes, as shown in Fig. 4, to prevent wear or other injury to the piston-packing. 1

The front end or head of the cylinder is shown at F4, and the rear head at F5. The front head has a central disk, F6, capable of turning in the rim part of the head, and having two stuffing-boxes, F", through which pass the duplicate piston-rods W of the piston W. These rods work in a guide-frame, X, and carry at the ends a socket head or heads', Y. As shown, a single socket-head, Y, is connected to both piston-rods in the manner of a crosshead, and containing three sockets, w, for three picks. -(See Fig. 6.) The socket-headYis held upon the piston-rods W' by set-screws y, or by other suitable means. A supplemental sockethead, Z, maybe fitted into either of the three sockets w in the absence of drill-picks b, and the latter be held in the sockets of head Z. The socket-head Z may be set at any angle with that of Y.

Fig. 6 shows the picks in a row, the outer ones, b, being similar in shape, except that they are made right and left. The picks b have one straight corner, b2, ending in an angular or square point, b3, from which extend at an acute angle two sharp edges, b4 115. Cutting at a right angle to each other on the inner side are extensions or wings t6, which, when no central IOC IIO

pick, bf, is used, come nearly or quite in contact with each other in case a central pick is used. (See Figli.) The wings come nearly or quite in contact with the same. In case any material should become jammed fast between the picks, the next blow would force the ob ject past the point of the wings,whei/1y it would .be free to drop out.

A single wide-spreading pick may be used, as shownin Fig. 7. This has spreading sides ending in square points, and with a generally recessed or concavely'curved edge between the points, with small convexlycnrved portions near the points.

Z is a lamp attached to the frame X, or to the cylinder-head', and l/is a reflector for the same. The lamp is so placed as to throw light uponl the place being operated upon.

The operation is as follows: The compressed air, entering both valve-chests E and R, drives first the small engine S, which works the slidevalveV, and thenthe pick-engine. rl,he cylinder may be readily inclined upward or downward, or to either side, by means of thehandles G2. The machine may be pushed forward,and will retain its advanced position, (except as to the slippingofthewheels upon the platt'orm',)owing to the friction-brake preventing the retrograde rotation ofthe wheels. To allow the retreat of the machine the brakes are raised from the friction-rings. The elevation of the cylinder maybe changed, either by changing the length of the crank by means of device shown at c' c2, or by means of the rods G and screws H, or adjusting both these devices rlhe adjustment of the balance of the cylinder upon the wheels is had by the same means. The center of gravity of the cylinder F and attached parts is in alll positions ot' the cylinder below the center of the wheels, and consequently the machine will be steadily supported on the wheels. To

turn the guide-frame the disk F6 may be turned after the cylinder-head bolts F8 are loosened.

- I claim as my invention- 1. The lcombination of pick-engine cylinder F, crank-axle C, hinged thereto, and the supporting-wheels B, for the purpose set forth.

2. The combination of cylinder F and crankaxle 0, arms or rods G, and screws H, for the purpose set forth.

3. The single piston W, provided with two piston-rods, W', and picks b, as set forth.

4. The combination, with the paired pistonrods Wl, ot' the socket-head Y, securing said rods together, and constructed to receive and retainl picks or supplemental socket Z, as set forth.

5. The combination, with the two wheels B of a mining-machine, of the friction-brake hung eccentrically to the wheels, and constructed to prevent their retrograde rotation, substantially as set forth.

6. The combination, with the engine-cylinder F, of the distinct induction-ports F and eduction-ports F2, with separate valves c and o', for the purpose set forth.

7 The two picks l), constructed with inward extensions or wings b, and attached to dupli cate piston-rods W', substantially as and for the purpose set forth.

S. Thecombination of wheelspindles @,sockets c', and crankarms c2 of crank C, box D, and chest and cylinder E F, substantially as and for the purpose set forth.

9. The plate or tray A, formed with side guides, a, and adapted to lie on the door of the mine, as set forth.

BENHARD YOGH.

Witnesses:

SAML. KNIGHT, Gno. H. KNIGHT.

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