US773882A - Coal holing and cutting-in machine. - Google Patents

Description

No. 773,882. PATENTED NOVfl, 1904.

A. E. MILLWARD.

GOAL HOLING AND CUTTING-IN MACHINE.

APPLICATION FILED NOV. 6, 1903.

N0 MODEL. 5 SHEETS-SHEET 11 mag NO MODEL.

PATENTED NOV. 1, 1904. A. B. MILLWARD.

COAL HOLING AND CUTTING-IN MACHINE,

APPLIOATION FILED NOV. 6, 1903.

5 SHEETSSHBET 2.

Fig.2.

WIT/\l ESExS A. B. MILLWARD.

GOAL HOLINGAND CUTTING-IN MACHINE.

APPLICATION FILED NOV. 6, 1903. N0 MODEL.

5 SHEETS-SHEET 3.

vV/ TNEs 5 E5 //V VE/V TO 2 32 1 4 v deil'zwawmvlzwwrd k PATENTED NOV. 1, 19.04.

A. E. MILLWARD.

GOAL HOLING AND CUTTING-IN MACHINE.

APPLICATION FILED NOV. 6, 1903.

5 SHEETSSHEET 4.

N0 MODEL.

W/ TNE6 65 \S PATENTED NOV. 1, 1904.

6 SHEETS- SHEET 5.

A. E. MILLWARD.

APPLICATION FILED NOV. 6, 1903.

UNTTDD STATES Patented November 1, 1904:.

PATENT @rricn.

COAL HOLING AND CUTTING-IN MACHINE.

SPECIFICATION forming part of Letters Patent No. 773,882, dated November 1, 1904.

Application flied November 6, 1903. Serial No. 180,068. (No model.)

To (all whom it nuty concern:

Be it known that I, ALBERT EDWARD MILL- WARD, mining engineer, residing at 113 Manchester road, Accrington, in the county of Lancaster, England, have invented certain new and useful Improvements in Coal Holing and Cutting-In Machines, of which the following is a specification.

This invention relates to machines for working coal or other mineral by holing or undercutting it, also by cutting in or making a vertical slot against a fast side or in any required position; and the invention consists of the following parts and arrangements: A pair of cutter-wheels are fixed on an axis at any required inclination to one another to enable them to make a cut or incision in the coal or other mineral of such width that all other parts of the machine required to do so may be able to follow up the cutters. These cutter-wheels are supported at the extremity of a steel tube through which the main shaft passes, driving the cutter-wheels by means of bevel-gearing. The ground forming a core between the cutter-wheels not cut away by them is removed by a crown-piece carrying cutters or by cutters mounted at or near the end of the drivingshaft, which is extended beyond the driving-gear for the purpose. When holing, the tube or hollow arm carrying the shaft and cutters is loosely attached by means of an encircling collar to a telescopic screw-column, which is tightened by an adjusting-screw between the roof and fioor. \Vhen used for cutting-in, the hollow arm is similarly secured to a horizontal branch piece clamped in any required position to the telescopic column.

The main shaft of the machine is actuated by an electric motor or other suitable motor driving through flexible shafting or by any other power or available means.

The objects of this invention are toattain from moderate driving power a considerable speed of the cutters for the effectual cutting of the coal or other mineral; to enable the holing to be done between the roof-supports of the mine without shifting them, thus avoiding the difficulty and danger consequent in many cases upon doingso, also without laying any rails or track for the purpose, by the fewness and simplicity of the parts, also by their lightness and portability, and by the ease and readiness with which the whole machine may be manipulated to enable coal cutting by machinery to be carried out more extensively in all places where it is possible to introduce a man and an ordinary pick; to enable coal to be successfully got by machinery in pil- Jar-and-stall, working as well as in longwall working, by performing the large proportion of cutting-in in a ready, simple, and effectual manner.

In the accompanying sheets of drawings, Figure 1 is an elevation of the cutting device of a coal holing and cutting-in machine made according to my invention, the casing of the machine being shown in section. Fig. 2 is a View, on a reduced scale, of the machine supported by a vertical pillar in a coal-mine. Figs. 3, 4;, and 5 are elevations, plan, and end views, respectively, of the machine; and in Fig. 5 an additional bracket for vertical and angular work is shown secured adj ustably upon the vertical pillar.

In' the drawings, 2 designates a tubular casing upon the surface of which is cut a screwthread 3 for any desired length, and through this tube passes a shaft 4, upon which is secured a bevel-pinion 5, the front end of which shaft is supported in a bearing-block 6, provided with two arms which are supported in recesses 2, formed to receive them in the enlarged end of the tube or casing 2. On each of these arms is mounted loosely a bevelwheel 7, both of which wheels gear into the pinion 5, and upon the boss of each wheel 7 is secured a rotatory cutter-block 8, provided with suitable cutting-teeth which are secured to the cutter-block in any well-known manner. The shaft I projects some distance beyond its bearing 6 and has attached to its end a crown-piece or cutter 9 and side cutters 10 for removing the core left by the rotatory cutters.

In Fig. 2 the cutting mechanism is shown in its working position in a seam or bed of coal and supported by a vertical pillar 11, held as usual between the top and bottom of the seam. In this view a flexible shaft 12,

which may be driven by any convenient motor or source of power, 1s shown attached to the machine-shaft 4 by a coupling 30.

In Figs. 3, 4:, and a bracket 13 is fitted 5 to swivel around the pillar 11, and through a projecting portion of this bracket is passed the screw-threaded tube 2, and upon this thread 3 is screwed a pinion 31. Two keys 33 are secured in the interior of the bracket 13 and )roect into kc wa s 34 formed in l J .V 5 1 the tube 2 to prevent it turning. A handdriven spur-wheel 1 1 is fitted upon a stud carried in an extension of the bracket 13 and gears into the pinion 31, which is prevented 5 from moving endwise by the bracket 13 on *from rotating by the keys 3 3 the shaft 1,

with the cutters, can be advanced or retired, as desired. Figs. 3, at, and 5 also illustrate an arrangel'nent for traversing the coal-cutting machine round the pillar 11. as a center,

5 such as is used for cutting a semicircular groove in the face of a seam. A hand-wheel 15 is secured upon a stud 16, carried in a bracket 17, secured upon the pillar 11, and between it and. the base of the pillar is mount- 3 ed the aforesaid swivel-bracket 13, upon the face of which is secured a worm-wheel 19, and this worm-wheel is driven by a worm 20, secured upon the stud 16, so as to swivel the shaft with the cutters round the pillar 11, as

required.

\Vhcnever the cutters 8 are cutting coal, the

crown-cutter 9 and'side cutters 10 break down.

and remove the core left by and between the cutters 8.

My improved machine can be applied to cutting vertically or at any desired angle by mounting the brackets 13 and 17 on a horizontal arm 21, (see Fig. 5,) which is of the same diameter as the vertical pillar 11, to which it is clamped. WVhen mounted on the horizontal arm 21, the machine can be turned round in any direction and tilted to any angle upon the bracket 17.

What I claim as my invention, and desire to secure by Letters Patent of the United States, 1s

1. A mining-machine comprising a casing,

a driven shaft supported therein, and a pair of forwardly-diverging rotary cutter-wheels on said shaft, substantially as described.

2. A mining-machine comprising a casing, a driven shaft supported therein, a pair of forwardly-diverging rotary cutter-wheels on said shaft, and core-cutters operating between said cutter-wheels, substantially as described.

A mining-machine comprising a casing, a shaft supported therein, forwardly-diverging cutter-wheels secured to said shaft, means for rotating the shaft to operate the cutters and means for feeding the casing, together with the cutters, forward, substantially as described.

In witness whereof I have hereunto set my hand in presence of two Witnesses.

ALBERT EDWARD MILLWARI).

WVitnesses:

S. D. GILLnrr, H nnnmn'r ROWLAND ABBEY.

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