US716181A - Coal-mining machine. - Google Patents

Description

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W. S.' BUGLE. COAL MININISI` MACHINE. (Apphcatwn led Aug 19 189B (No Model.)

, Patented nec. I6, 1902,. w. s. BUGLE.

COAL MINING MACHINE.' (Application ldwug. 19, 1898.)

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' Patented Dec. I6, |902.` W. S. BUGLE.

COAL MINING MA'GHlNE.

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ATENI UFFICE.

WALTER s. BoGLnroF oIIIoAeo, ILLINOIS.

COALuMINlNG' MACHINE.

SPECIFICATION forming part of Letters Patent H0571 6,181, dated December 16, 1902.

` Application tied August 19, 129s. serai Naesaois. (No man.)

Y T0 a/ZZ wh'owt it may concern-.-

Be it known that I, WALTER S. BOGLE, of Chicago, in the county of Cook and4 State of Illinois, have invented certain` new and useful Improvements in (loal-lWIiningA Machines, of which the followingis a specification.

This invention relates to coal-mining machines, and has for its object to provide anl improved constructionfof track and form of wheels for the carriage or mount of the ma chine and an improveddevice for looking the carriage against longitudinal movement on the track when'the machine is at work. i To these ends the invention consists in certain novel features, which I will now proceed todescribe and will then particularly point out in the claims.

In the accompanying drawings, Figure lis of the carriage and also on anenlarged scale.`

In said drawings, 10 represents the miningmachine proper, which is "of a well-known type, preferably imparting a reciprocating motion to the tool or pick and whichmay be of any approved -construction for thispurpose, its particular structure forming 'no part of my present invention. This machine'is provided with horizontaltrunnions 11 at its sides, forming a transverse axisat right angies-to the line of reciprocationoffthe tool or pick, upon which axis the Amachinemay be swung so as to vary-the height and angle to the horizontal of the cut on the machine. The trunnions 11 are mounted inbearings 12 on the upper ends of a standard or support 13, which is U-shaped or in the form of a yoke, as most clearly shown in Fig. 3, to permit the body of the machine tolswingfreely between thevertical armsofA said standard. The standard 13 is mounted upon a truck 14, with which it'has4 a pivotal connection by means of a vertical pivotal axis 15. The truck 14 is provided with a circular flange 16, forming a turn-table, and the standard is providedwith a similar circular recess 17 in its base to fit upon the turn-table 16 and take or rollers. .responds, of course, to the inclination of the rollers.

the strain from the pivot-bolt 15, which conneots the standard and truck, at the same time giving amore extended bearing, so as to-provide a more efcient support and reduce friction. The truck 14 is provided with carrying wheels or rollers 18, which are preferably tapered or frusto-conical in shape, as shown in Fig. 3, and there is provided a suitable trackor way inl which said wheels or rollers ltravel and are held against vertical and lateral displacement.

To this end the track or wayis provided with lateral grooves 19, having inclined flanges 20, extending under the wheels or rollers 18 and similar in"f-f clined iianges 21, extending over said wheels The inclination of the flanges cor- `which may be moved from place to place as required. This track or way is provided, preferably along its central portion, with a fixed 4rack 26, and the truck which carries the Inachine is` provided with a`coperating dog 27 to engage said rack and prevent extended motioniof the truck and the machine carried thereby relatively to the track. This dog is Vpreferably constructed in the manner shown Vin detail in Figs. 1 and 4 of the drawings and comprises a suitable barrel or casing 28, pivoted at its forward end 29 to the truck-frame and having mounted within it so as to slide longitudinally therein the extensible portion 30, which carries the dog proper,31. A spring 32, mounted within the barrel or casing, bears against the inner end of theextensible portion 30and serves to thrust said portion and dog proper normally outward and rearward, so as to hold the same in engagement with the teeth of the rack 26. A pin 33, extending from the barrel or casing through a horizontal slot 24 in the extensible portion 30,

serves to limit the longitudinal motion of this latter and also to prevent its rotation within the barrel or casing,thereby insuring a proper l presentation ot` lthe dog to the teeth of the rack. The dog proper, 31, may be provided with a pivoted link or handle 31a, by means of which said dog may be conveniently raised and held out of engagement with the rack when it is desired to move the truck upon the way or track.

It will be observed that my invention employs a form of rack wherein the lateral walls of the teeth are vertical, in conjunction with a dog having similar vertical sides, so that when the dog and rack are in engagement the carriage is securely locked against movement in either direction. I also provide means for firmly securing or anchoring the track or way in position in the mine, and for this purpose I prefer to employ the particular form of structure shown in Figs. l and 3 of the drawings. This consists of ayoke or bail 35, pivoted or hinged at or near the rear or outward end of the way or track and carrying a hand-wheel 36,which is internally threaded to receive a correspondiugly-threaded rod or bar 37, which forms an extension of the yoke 35. At the upper end of the rod 37 is provided a point or tip 38, which is toothed or otherwise adapted to engage the roof of the mine when forced into contact with the same.

The anchoring device just described serves to securethe rear end of the track firmly in position, and may, as a rule, be sufficient for properly holding the entire track. I prefer, however, to employ in conjunction therewith an anchoring device for the front ofthe track consisting of a spur or pointed projection 39,

which is adapted to engage with the wall ofA the mine in front ofl the machine and by such engagement lock the front end of the track against vertical movement.

The machine thus constructed and mounted operates in the following manner: The track or way is moved to that portion of the mine where the machine is to be used and is firmly anchored in place by engaging the spur 39 with the wall and by swinging the yoke 35 into an upright or approximately upright position and rotating the hand-wheel or nut 36, so as to force the rod or bar 37 upward until its point or tip 38 engages the roof of the mine, and being forced firmly against the same serves to anchor or secure the track or way firmly in position. The rod or bar 37 may be held against rotation by the hand of the operator While the hand-wheel 36 is being turned or suitable provision, such as a spline or groove connection between said rod or bar and the yoke 35, may be made to positively prevent rotation of said rod or bar. The truck 14, mounted in the track or way, is then moved forward to bring the machine to the desired position relatively to its work, and the dog 27, engaging with the rack 26, will positively prevent any motion of the truck and machine while in such engagement.

The spring 32 will, however, permit a certain amount of yielding of the truck under the shock of the blows delivered by the machine wheny at work and will thus lessen the strain on the machine and its mount by acting as a cushion, thereby preventing wear and increasing the durability of the apparatus. The machine may be turned upon its vertical pivot 15, so as to cut either directly in front` or along `either side or in any intermediate position, and by swinging the machine upon its trunnions ll it may be made to alter its vertical range of work as desired, so that in practice the machine maybe caused to operate upon any part of the drift, either in front of it or atits sides, within a very large vertical range. The machine may of course be fed forward whenever necessary by disengaging the dog 27 from the rack 26 and giving to the truck or carriage the desired amount of movement in advance.

yThe construction of the way or track is such as to prevent any lateral displacement of the truck therefrom and also such as to prevent its being displaced vertically either in an upward or a downward direction, so that the truck is Iirmly held in place to resist the recoil of the machine at whatever angle to the plane of the track the machine may be working. It' the way or track be so arranged .as to have an inclination toward the work and the form of rack shown in Fig. 5 be employed, it is obvious that the machine will be automatically fed forward along the track to the work by gravity and will be prevented from recoiling by means of the rack and dog provided for that purpose.

It is obvious that although I have described the machine as a coal-mining machine its use is not limited to the mining of coal, as it may be used for mining or drilling material other than coal.

I claim- 1. In a mining-machine, the combination with a tool-head provided with lateral trunnions, of a carriage or truck in which it is mounted, a track on which said carriage may travel, and means for locking said carriage in fixed position relatively to the track, said means comprising a rack disposed longitudinally of the track and between the rails thereof and a dog pivoted to the under side of the carriage and adapted to engage said rack and thereby hold the carriage against travel in either direction, substantially as described.

2. In a mining-machine, the combination with a tool-head provided with lateral trunnions, of a carriage or truck in which it is mounted, a track on which said carriage may travel, and means for locking said carriage in xed position relatively to the track, said means comprising a rack disposed longitudinally of the track between the rails thereof and having teeth provided with vertical side walls and an elastically-supported dog pivoted to the under side of the carriage, the nose of said dog also having vertical side walls and IOO IIO

engaging between adjacent teeth of the rack, substantially as described.

3. In a miningfmacbine, the combination with a tool-head provided with lateral trunnions, of a carriage or truck in which itis mounted, a track on which said carriage may travel, and means for elastically locking said carriage at any desired location along said track, said means comprising a dog constructed in two telescoping parts having a spring interposed therebetween and cushioning their relative longitudinal movements, Said dog being piveted at one end t0 the under side of the carriage, and a rack disposed longitudinally of the track and between the rails thereof, and adapted to be engaged by the free end of the aforesaid dog, substantially as described.

y 4. In a mining-machine, the combination with a mining-tool and a carriage supporting the same, said carriage having wheels or rollers frusto-conical in shape and of outwardlyyincreasing diameter, of a track therefor, the `parallel rails or Ways of said track each comother, whereby the carriage is secured against l both vertical and lateral derailment, substantially as described.

WALTER S. BUGLE. `Witnesses:

IRVINE MILLER, C; C. LINTHICUM.

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