US513296A - Mining-machine - Google Patents

Description

(N0 Mdel.)

2 Sheets-Sheet 1;. J. L. BEURY & J. T. ORESsEy.

MINING MACHINE.

No. 513,296. Patented Jan. 23, 1894.

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(No Model.)V 2 Sheets-Sheet 2. J. L. BEURY 8v J. T. CRESSEY.

MINING MACHINE.

No. 513,296. .Patented Jan. 23, 1894.

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UNITED STATES PATENT OEEIcE.

JOSEPH L. BEURY AND JOHN T. ORESSEY, OF BEURY, WEST VIRGINIA.

MINING-MACHINE.

SPECIFIGATION forming part of Letters Patent No. 513,296, dated January 23, 1894.

Application filed March 20, 1893. Serial ITo. 4661765- NO model.)

To all whom it may concern:

Be it known that we, JOSEPH L. BEURY and JOHN T. ORESSEY, citizens of theUnited States, residing at Beur-y, in the county of Fayette and State of West Virginia, have inventedv certain new and useful Improvements in Mining-Machines and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain new and usefulimprovementsin mining-machines;and it consists substantially in such features of arrangement, construction, and combinations of parts as will hereinafter be more particularly described and pointed out in the claims.

The invention has for its object to provide a machine of the character referred to which in I'cutting into earthy deposits of coal or the like for any particular thickness required the cutting surface may be considerably lessened and the work of the machine thereby reduced to a minimum.

A further object of the inventionis to provide a machine of the character referred to in which the cutter feed shall be central and direct and shall be received from the same source or shaft from which the power is derived.

A still further object of the invention is toprovide a mining machine for coal and like deposits which shall possess ease of adjustment, lightness, ready transportation or removal from one point to another; as well? as simplicity of construction, ease of manipulation, strength, durability, and positive and reliable action in the operation of cutting or drilling, as will appear more fully hereinafter.

A still further object of the invention is to provide a machine of the character referred to in which the feed of the cutting devices shall be readily adjustable to any depth of cutting action desired, and also to enable the cutting mechanism to be easily and quickly returned to the starting point through the medium of the same power and appliances that thesaidmechanism is fed forward during the cutting ordrilling operation.

Theinvention has such other objects in view as will hereinafter be more fully explained in connection with the accompanying drawings, in which- Figure l represents a top or plan view of a mining machine constructed and arranged in accordance with our invention. Fig. 2- central longitudinal sectional view thereof to indicate more clearly the construction and interior disposition of the main driving shaft, the feed, thel sliding frame and the rotarv cutting mechanism. Fig. 3 is a transverse sectional view of the body or bedframe of the machine, the same being taken in a line immediately adjacent to the feed-clamp.V Fig. 4 is a view in detail to represent the mannerl of fastening of the removable cutting teeth or picks which project tangentially from the edges of the rotary disks. Fig. 5 is a viewin detail representing one of the saws or cutting disks to which the teeth, picks or cutters are secured. Fig. 6 is a sectional view in detail of the rear end of the screw-feed or main shaft, the rack-bars, and the clutch devices which effect the return of the cutting mechanism after it hasbeen advanced forward the required distance in the cutting or mining operation. Fig. '7 is a sectional View in detail to represent the protecting shell or case for the spur-gear which operates the rotary isacutting devices or mechanisms directly from 8o the main shaft.-

In carrying our invention into effect we provide a suitable bed or main frame in a suitable part of which suitable longitudinally sliding devices are arranged; and, carried by such sliding devices is the main shaft through the medium 0f which the cutting mechanism for penetrating the coal or like deposits is operated. The driving power is derived from an electric or other suitable motor carried by the sliding devices and as the latter moves forward or advances, said motor is caused to move with the same. In, like manner when the shifting devices are brought into clutch or engagement for returningthe cutting mechanism to its starting point the said motor is brought back therewith. We employ a r0- tary auger or drill which'enters the material to be out; and at a suitable distance to the rear of such auger or drill we employ a dou- IOO ble or multiple set of rotary cutting blades, picks, or knives each separate set thereof rotating or revolving in an opposite direction to the others so that a most thorough and effective cutting is obtained. The said rotary cutting mechanism and the auger or drill rotate in planes at right angles to each other and both are operated directly from a single main operating shaft to which a rotary motion is imparted by the motor carried by the sliding devices hereinbefore referred to.

We employ a suitable feed by which the main screw shaft is urged along forwardly while in the act of rotatingor revolving, and by the disengagement of which the depth of the cutting may be regulated; and we also employ a suitable clutch or shifting device so as to return the cutting mechanisms to their starting point after the cut has been made.

Reference beirig had to the several parts of the drawings by the letters and numerals marked thereon, the numerall designates the bed or main frame of the machine which may if desired be provided at each of its fourcorners on the under side with suitable casters or rollers a (Fig. 2) so as to enable the machine to be readily moved or-shifted about from one place to another. The said frame may be of anysuitable or preferred construction, and, as willbe observed the upper portions thereof are provided on their inner sides with longitudinal grooves 2, 2, which receive portions of the motor hereinafter specified and guide such motor in its movement lengthwise of the machine.

Longitudinal rack bars 3, 3, are arranged within the machine from end to end thereof, which bars are engaged by a worm as and for a purpose hereinafter specified.

An electric or other suitable motor 6 is guided in the grooves 2, 2, of frame 1, the said motor being supported by and moved along with alongitudinally sliding or movable frame 5 as the latter advances or returns, so that the said motor and movable frame always maintain an unchanged relative position to each other. The said movable or sliding frame 5 extends for a considerable length ofthe bed or main frame 1, and constitutes an extended bearing for the main screw or operating shaft 7, and this frame at its forward end also subserves as a bearing for the horizontally rotating cutting mechanism hereinafter more specifically referred to. Firmly secured to the outer end of the screw or main shaft 7 is an auger or drill 9 which enters the material to be cutor drilled in advance of said horizontal rotary mechanism, and formed with or provided on said shaft at a point in rearof the axis of rotation of such mechanism is a collar 10 which bears against or upon the forward end of the sliding frame, and in this way is such frame urged forward to carry with it 'the motor and driving con nections as the machine is being operated.

Carried by the shaft 7 at near its inner or rear end is a sprocket wheel 11, while also carried by the motor-shaft 12 is a similar wheel 13,`the two wheels being connected by e shaft at its inner end is a loose or idle worm gear 15, which is constructed on its inner face to receive and be engaged by a clutch 16 that works in a groove in said shaft, as shown in Fig. 2, and which clutch is operated by a hand-lever 17, also clearly shown. By causing said clutch to engage the wheel 15 after the cutting devices and sliding frame have been moved forwardly 4or outwardly the desired extent, the lsaid `wheel will be caused to revolvewith the shaft, and, theworm wheel 15 being in engagement with the rackbars 3 and the pitch of the thread on this Wheel being oppositeto that of thc thread of the screw shaft 7, the sliding frame and the parts carried thereby `will be moved backward, so long as the wheel isconnected with theshaft so as to turn therewith.

The forward end of the sliding frame is formed with upper and lower bearings 1S and 19 around which revolve `upper and lower disks or plates 20, each of `which issecured in place by means of `a cap 22, screwing onto the bearings,as shown. Thesaid plates are formed or provided on their opposite surfaces immediately surrounding their axes of rotation with a circular arrangement of gear teeth 23, see Figs. 2, 5, and 7, which teeth are engaged by a spur-gear 1 23 carried bythe mainshaft ator near its forward end, so that as said shaft revolves the said disks or plates willbe rotated in opposite directions to each other. The said revolving plates or disks are also moved forward in unison with the shaft and .sliding frame so that the same relative position of the several parts is always maintained and an equal force and effect secured. These plates may be provided with any suitable form of e cutting knives, blades, or picks toetfect the cutting of the material operated upon, `but preferably we employ such form as is shown more clearly at 24 Fig. 1, and in detail at Fig. 4l By reference to Fig. 1, it will be seen that the blades or picks project forward, that is, in the direction of rotation from the edges of the disks, and it will also be seen that each blade or pick (with the exception of the one marked a) is formed on its shank with a notch 25 and a projection 26, the projection of the one entering the notch of theother in such a Eway as to firmly brace each knife, blade, or

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of course evident that the remaining teeth will be held together by interlocking them in the manner shown and explained. We have found this construction to answer perfectly the purpose intended.

In Fig. 4 we have illustrated the vertical ar- Y rangement of .three contiguous picks or blades 24. It will be observed that they are placed in different vertical planes, one being in the plane of the supporting plate or disk 20, another above, and the third below such plane. This arrangement insures that the kerf cnt by the' horizontally arranged cutters shall have sufficient width or thickness to insure proper clearance.

The numeral 28 denotes a feed clamp or nut which is pivoted to the main frame at 29 (see Fig. 3) and to which is also pivoted at 30, the inner end of a hand lever 31, provided with a locking grip 32 which engages the teeth of a small rack 33, also secured to the frame 1 on the outside. By depressing said lever so as to raise the clamp 28, the latter will engage the screw of the main shaft and thus enable said shaft to be fed forward or backward accordingly as the same may or may not be engaged by the clutch device hereinbefore referred to. By lowering the clamp the main shaft will not be fed, but as long as the motor continues to operate the said shaft it (the shaft) will continue to revolve, as will also of course the horizontally rotating cutting mechanism.

It will be understood that as the clamp or nut 28 feeds the cutters forward, and the wheel 15 feeds them backward, the two should not be made to engage with the shaft 7 simultaneously; and that when both are disengaged the sliding frame is not moved. When the clamp or nut 28 is engaged with the screw shaft 7, the worm wheel turns idly upon its bearing on the shaft 7 by reason of the engagement of its thread or threads with the racks 3.

Before the spur gear 123 which operates the rotary disks directly from the shaft we place or arrange a casing or guard 35 which prevents access of material to said gear and the same is therefore not so liable to become clogged up as would be the case if the space were left open or clear. The motor Gis guided in its movement along with the sliding frame by entering the grooves 2, 2, formed on the inner sides of the frame 1, see Fig. 3, as already explained.

In thus describing our invention the function and operation of each part have been carefullyexplained separately. Consequently a general description of the conjoint operation is not thought to be necessary to enable anyone to understand the fullworkingof the machine.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

l. In a mining machine, the combination of a stationary frame, a sliding frame, a motor, al screw'shaft carried by the sliding frame, a feeding clamp or nut adapted to engage with the screw shaft to cause the sliding frame to be moved forward, and the horizontally arranged cutters carried at the forward end of the sliding frame and driven by the said screw shaft, substantially as described.

2. In a mining machine, the combination of the sliding frame, a screw shaft driven in one direction, a movable clamp or nut adapted to be brought into contact with the said screw to move the frame in one direction, a stationary rack bar, and a worm wheel the thread of which is pitched oppositely to that of the screw shaft which engages with the rack bar, and means for connecting the said worm wheel with the screw shaft. at will, substantially as described.

3. In a mining machine, the combination of the sliding frame, the single screw shaft driven in one direction, a movable forward feeding clamp adapted to be engaged with the said screw to advance the said frame, and backward feeding mechanism adapted to be connected at will with the said screw shaft without stopping or reversing its motion to retract the frame, substantially as described.

4. In a mining machine, the combination of a sliding frame, a screw shaft carried thereby and driven in one direction continuously, a movable nut or clamp adapted to be engaged with the said shaft whereby to move the frame in one direction, a stationary rack bar, a wheel engaging with said rack bar, and a clutch mechanism between said continuously moving screw shaft and the said wheel, whereby they may be connected to cause the frame to be retracted by the engagement of the wheel with the rack, substantially as described.

5. In a mining machine, the combination with the main screw shaft, and the sliding frame and motor, ofthe rotary cutter carried at the end'of the said shaft, the cutting disks mounted upon opposite sides and in rear of the said rotary cutter, and having the teeth surrounding their axes of rotation, and the spurgear on the shaft for engaging such teeth to operate the disks to revolve in opposite directions, substantially as described.

6. In a mining machine, the combination of a main shaft carrying at its end a drill, two disk cutters one on each side of and in rear of the drill, and intermediate driving mechanism between the shaft and said disk cutters, whereby they are rotated in opposite directions, substantially as described.

7. In a mining machine,astationary frame, a sliding frame, a main screw feeding shaft 7, a feed nut adapted to be moved into and out of engagement with the said screw shaft, a

motor for driving the said shaft, a worm wheel 15 mounted loosely upon the said shaft, the clutch whereby the worm wheel is connected IOO IIO

adjacent thereto being riveted to the disk, substantially as described.

In testimony whereof we atix our signatures in presence of two Witnesses.

J OS. L. 'BEURY. JOI-1N T. ORESSEY.

Vitnesses:

0. C. KUBAOH, WM. BEURY.

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