USRE11058E - Machine - Google Patents

Description

5 SheetsSheet 2.

E. E. CARTER.

Assignor to J. S. SCULLY.

MINING MACHINE. Reissued Feb. 4, 1890.

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E. E. CARTER.

Assignor to J. S. SGULLY. MINING MACHINE,

Reissued Feb. 4, 1890.

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5 Sl1eetsSheet 4 E. E. CARTER.

Assignor to J. S. SCULLY. MINING MACHINE.

Reissued Feb. 4, 1890.

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B E. O A R T E R Assignor to J. S. SGULLY.

MINING MACHINE.

Reissued Feb. 4-, 1890.

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. cutting the coal. I

'--- j The invention has for its object such a con- 1 UNITED STATES j PATE T OFFICE.

.EDWIN E. CARTER, or PITTSBURG, PENNsYLvANIA,--Ass1eN0R TO JOHN s.

SCULLY, or SAME PLACE. i

MINING-MACHINE.

- SPEOIFICATION formingpart of Beissned Letters Patent No. 11,058 dated February 4, 1890, Original No. 898,813, dated February 19, 1889. Application for reissue filed Apr-i1 6, 1889. Serial No. 306,260.

To all whom it may concern:

Be it known that I, EDWIN E. CARTER, ac1t zen of the United States, residing atPitt-s:

' burg, in the county of Allegheny and State of Pennsylvania, have invented or discovered certain new and useful Improvements in Mining-Machines, of which improvements the following is aspeification. p i V t The invention described herein relates toi certain improvements-in that class or kind of i mining-m'achines wherein are employed a se- .ries of rotating cutters operating in substantially the same horizontal plane, said cutters being movable back and forth through their the purpose of" under- 1 side pieces are-formed of channel-bars ardriving mechanism for struction of machine of the class indicated as will permitofthe formation ofa. low narrow under-cut and of the arrangement of the: steadying or gu ide bar for the cutters in close '-preximity'to the coal-breast, the clearing or cleaning mechanism being so constructed as to follow the cutters in their inward move-- :5

ment, and that its eifectiveness in clearing the under-cutof dust, &c increases in proportion to the depth of penetration of the;

cutters; and, further theinvention has for its object such "additionalimprovements in the construction and arrangement of. the CD5:

crating mechanismas.will. .rend'er the same more effective and ecpnoini'eal in operation.

In general terms theinvention consists in the construction and combination of mechanical devices or elements, all as more fully In the accompanying drawings, forming a :part of this specification, Figure 1 is a plan View of my improved miningmachine. Fig:

:2 isfaview in. side elevation of; thesaine," showing the machine in operativepositionin a mine. Fig. 3 is a view showing the-front" end of the machine in elevation. f Fig. 4'is" 'a view partly in section and partly in '=eleva-' tion, the section being taken on the linenfzr; Fig: 5. Fig. 5 is a longitudinal section on the liney 11 Fig. 1. Fig. 6- is a sectional view of 'onelform of the spindle-driving gears. Fig.-

. 7 is a sectional detailof a portion of the mechanism for. reversing the I feed ,Inechanism- 8 and 9 are sectional views, the planes of section being at right angles toeach other, of the gea ing for transmitting motion to the section being at right angles to each other,

ranged with their flanges 4 projecting im wardly, thereby forming guides and supports iuafter more fully described.

The cylinders 5 are secured to or formed thereon by the side brackets or legs 7, extending, to the side pieces, and the end brackhead-piece 2 of the frame, the rear ends of the frames 6 being held in proper relation to each other by the cross-brace 9. The pistonrods 10 of said cylinders are connected by crank-pins .11 to disks 12 on opposite ends of .the shaft 13, which is mounted in suitable bearings formed in the frames: 6. r on the shaft 13 are keyed the gear-wheels 14a, int-crineshing'with corresponding gears 15 gon what might-be termed thepower-dis- 'tribnting shaft 16, said shaft being mounted in suitable bearings 17 on the brackets 18, iforined onor secured to the rear side of the box,- fo rminglrefront piece 2 of the main" .framgias shownin Figs-1 and 5.. Y

On the shaft 16 are keyed a series of ingson the upper ends of the brackets .18, and arms 22, formed on the front'side'of the.

Pinions 23 are formed integral with; the bev .eled gears 20, "and are adapted 'to 'i'ntermesh rats 8, preferably formed integral with the.

shaft fordri'ving-the feed mechanism. Figs. 10 and 11 are sectional views, the/planes of 5 5 of the feed-carriage and itsoperating'mechanism.v Figs; 12, l3, and 14 are detail views of the drill bars or spindles, Figs. 13 and 14 for the spindle cross-header carrier, as hereintegral with the frames 6, arranged longitudinally of the main frame and secured beveledgear-wheels-19, which interrnesh with corresponding beveled gears 20, journaled l short counter-shafts 21, mounted in bear- 5 box 2,- fdrlni n'g the'front of the main frame.

with gear wheels 24, journaled on short counter-shafts 25, mounted in suitable bearings in the front and rear sides of the box 2. These gear-wheels 24 also have pinions 25 formed integral with them, each of the pinions 25. being arranged to interuiesh with two gearwheels 26, mounted on the drill bars or spin-" ranged in close proximity .to each other, and

at the same time to permit of the use of comparatively large gear-wheels for rotating the spindles and cutters without increasing the size of said cutters, the gear-wheels26 are.

arranged in different vertical planes, the adjacent gearwheels overlapping each other, as shown in Figs. 4 and 5. The spindles orbars 27 are supported near their front ends in suitable bearings formed in the front and rear sides of the box 2, and when spindles or bars having an angularcross-section are employed I provide sleeves 29, round in cross section and having angular openings for the reception of the shafts 27, said sleeves being arranged in the bearings in the front and rear sides of the box 2.

In order to lessen the friction due to the longitudinal movement of the angular spindles or bars 27 through the driving-gears 26 during the cutting operation, the walls of the angular openings through said gear-wheels are formed by friction-rollers 30, arranged in suitable recesses, as shown in Fig. 6.- The friction-rollers 30 are held in position by pins 31, inserted through holes through the disk 32, forming the body portion of the gear-wheel -26 prior to shrinking the toothed ring 33, forming the outer portion of such gear-wheel, uponl the disk 32.

The spindles or bars 27 are made of a length proportional to the depthof cut desired, and

at their rear ends are connected to the crosshead or carriage 34, as shown in Figs. 5 and 10, in such manner as to cause the spindles to move with the cross-head, but permitting of their free rotation. This cross-head or carriage extends across the main frame, and is provided at its ends with wheels 35, resting upon the lower flange of the side pieces3, and with wheels 36, bearing against the inner walls of the side pieces, said'wheels serving to facilitate the movements of the cross-head. To the under side of the flanges of the side pieces 3 are secured 'racks37,with-which pinions 38 engage, said pinions being keyed to or formed integral with shafts '39, which are mounted in bearings 40 on the cross-head or carriage. On the same shafts with the pinions 38 are secured gear-wheels 41, arranged to intermesh with pinions 42 on shafts 43,

which are mounted in bearings 44 and are provided with gear-wheels 45, intermeshing with pinions 46 on the ends of the shaft 47, extending longitudinally of the cross-header carriage and serving to transmit equal and simultaneous movements to the above-described mechanisms at each end of the cross head or carriage, as shown in Fig. 1. On the shaft 47, about midway of its length, is keyed a gear-wheel 48,with which a pinion 49, formed integral or moving with the beveled gearwheel 50, intermeshes, said beveled gear 50 and pinion 49 being mounted on a pin 51, suitably supported by brackets 52 and 53, extending up from the cross-head or carriage,

as shown in Fig. 8. The beveled gear 50 intermeshes with a correspondingly-shaped gearwheel 54, arranged on a shaft 55, mounted in suitable bearings 56, formed on the front and rear end pieces of the main frame, as shown in Figs. 1 and 5. The beveled gear 54 is so connected by a spline'and groove with the shaft 55 as to rotate therewith and to move th'erealong with the cross-head or carriage, with which said beveled gear is connected by a collar 57 on its hub engaging a groove in the bracket'53, formed on or secured to the cross-head or carriage, as shown in Fig. 9.

' On the shaft 55, near its rear end, is keyed a gear-wheel 58, intermeshing with a correspondin g gear-wh eel 50, keyed to the shaft 60, which is mounted at its rear end in suitable bearings 61 on the rear end piece of the main frame and at its forward end in a bearing 62,

'formed on the lower end of a lever 63, pivon the shaft 60 into operative contact with the sidesof either one of the disks 66 67 on the engine shaft 13, thereby rotating the shaft 60 in either direction, as required for the movements of the cross-head or carriage. In orderto provide for variations-in speed of the cross-head orcarriage, the friction-wheel is so connected to the shaft 60 by a spline and groove (see Figs. 1 and 7) as to be capable of movement along said shaft, whereby it may be brought into contact with the sides of the friction disks at different distances from their centers. This longitudinal ad'- justment of the friction-wheel 65 is eifected by a yoke 68 engaging opposite sides of said diameters of said beveled gears.

the cross-head or-carriage forward, is not sufiicient to force and hold the cutters to their work; hence a beveled gear-wheel 70 is formed on the front end of .the friction-wheel 65,said

speed of penetration of the cutters can be regulated according to the character of the coal being cut, the feed being rendered certain when the coal is hard by the engagement of the beveled gears 70 and 71 and sufficiently slow by properly proportioning the relative The front ends of the drill-bars 27 are provided with cutter-holders 72, in which are secured the cutters 28, as hereinbefore stated; Between the holder 72 and the front end of the main frame is arrangeda spiral conveyer 73, for removing the dust and dirt from the out, said conveyer being formed of a flat strip of spring metal wound around the drill bar or spindle, the inner edges of the coils fitting the spindle or bar, but free to move along the same. One end of the strip is secured in a slot cut in a projection or lug 74 on the rear end of the holder 72, as shown in Figs.- 12 and 14, and the opposite end of said strip is secured in a slot formed in aring 75, loosely mounted on a collared sleeve 76, arranged on the spindle or bar 27, but held as against movement with the spindle orbar by.

a forked keeper 77 engaging one of the collars on said sleeve and bolted to the front end of the main frame, as shown in Figs. 12 and 13.

It will be readily understood from the above that when the spindles or'bars 27 are at or near the rearward limit of their movement in the frame the coils of the conveyer will'be closed together, as shown in Figs. 1,2, and 5; but as the cutters move forward in the cutting operation the coils will open, therebyincreasing their pitch and rendering the conveyer more effective in removing the dust and dirt from the out. It will also be understood that by the use of the extensible conveyer the gear'wheel for driving the cutter bar or spindle can be located much nearer the cutter, and at the same time permitting of the use of a conveyor operative along the entire depth of out, except such portions thereof as are occupied by the cutter.

\Vhile operating, the machine is preferably supported by rails 78, secured to beams 79,

' arranged transversely of the chamber, as

shown in Fig. 2, and the machine is held as against rearward and upward as regards its front end movement by undercut hooks 80, secured to the under sides of the side pieces 3 of the main frame and adapted to engage the rail 78 under the front end of the machine, said rail being heldfrom rearward'and upward movement by the dogs 81, engaging the'fioor of the chamber and the rail, andan extensible brace 82, hearing at its ends against the dog 81 and the roof of the chamber, as shown in Figs. 1 and 2.

In lieu of the rails v78 and beam 79, supporting the rear end of the machine,I may employ an adjustabledevice, as the lifting-jack 83, whereby the rear end of the machine may be raised or lowered for the purpose of effecting a vertical adjustment of the cutters.

In operating my improved machine the spindles or bars are retracted, as shown in Figs. 1 and 2, and the machine is arranged in proper relation to the breast of the chamber, and its forward end secured in position by means of the undercut hooks 8O engaging the rail 79, which is held in proper position by the dog 81 and brace 82. Steam or other suitable fluid is then admitted into the cylinders 5, thereby rotating the cutters through the system of. gearing hereinbefore described, connecting the engine-shaft 13 with the drill bars or spindles 27. It willbe observed that elements forming parts of this system of gearing from the power-distributing shaft 16 to the drill bars or spindles are so proportioned relatively to each other that there is a gradual and progressive gain of power between the shaft 16 and the drill-bars. In order to move the drill bars or spindles forward, the lever 63 is so shifted as to bring the frictionwheel 65into firm contact with the disk 66, thereby rotating the shaft 60, gear- wheels 59 and 58, shaft 55, bevel-gears 54 and 50, pinion 49, gear-wheel 48, and shaft 47 on the cross-head or carriage. vThe rotation of this shaft so operates the systems of gearing at each end of the cross-head or carriage as to move the latter forward, and with it the cutter bars or spindles 27.

It will be observed that elements of the systems of gearing fgr operating the crosshead or carriage are so proportioned relatively to each other that the initial speed imparted by the disk 66 is considerably reduced in transmission to the pinion 38, engaging the rack 37, and that the power is correspondingly increased. When, by reason of the hardness of the coal being cut, the frictional engagement of the wheel 65 with the disk 66 is not sufficient to feed the cross-head or car riage forward, the wheel 65 is moved along the shaft 60 until the bevel-gear 70 on saidwheel engages the corresponding gear 71 on the engine-shaft 13, thereby rendering the feed positive, and also so reducing the speed of such feed as not to force the cutters forward more rapidly than they can cut their way in to the coal.

No clai m is made herein, broadly, to the combination of a shoe engaging a rail and an extensible prop resting on the shoe and .hold the shoe and rail firmly in position.

I claim herein as my invention- 1. In a mining-machine, the combination of a series of revoluble cutter bars or spindles, a movable cross-head or carriage having the bars or spindles connected thereto, a system of gearing. at each end of the cross-head or carriage for moving the same, a central system of gearing engaging the systems of gearing at the ends of the'carriage, and a frictional gearing for operating the central system of gearing, substantially as set forth.

2. In a mining-machine, the combination of an angular cutter bar or spindle, a gearwheel having an angular opening therethrough for the reception of the bar or spindle, and rollers interposed between the bar of spindle and the sides of'the opening through the gear-wheel, substantially as set forth.

3. In a mining-machine, the combination of a series of cutter ba s or spindles and a like series of gear-whee bars or spindlesysaid gear-wheels being arranged in different vertical planesand overlapping one another, whereby a practicallycontinuous cut may be formed with comparatively small cutters, substantially as set forth.

4. In a mining-machine, the combination of a revoluble and longitudinally-movable cutter bar or spindle and an extensible conveyer arranged in the rear of the cutter, substantially as set forth.

, 5. In a mining-machine, the combination of a revoluble and longitudinally-movable cutter bar or spindle and a flat strip of metal wound spirally around said bar or spindleand secured only at its ends to the cutter-bar, substantially as set forth.

6. In a mining-machine, the combination of a series of revoluble cutter bars or spindles, a cross-head or carriage for moving said bars or spindles longitudinally, rotating frictiondisks, and afriction-wheel mounted on ahorizontally-movable shaft arranged between the friction-disks and adapted through suitable for revolving such 'ward and backward, substantially as set forth.

7. In a mining-machine, the combination of aseries of revoluble cutter bars or spindles, a cross-head or carriage for moving said bars or spindles longitudinally, rotating frictiondisks, and a friction-wheel mounted on ahorizontaIly-movable shaft and longitudinally ad justable therealon g, said shaft being arranged between the friction disks and adapted through suitable gearings to shift the crosshead or carriage forward or backward at different speeds, of the friction-wheel as'regards the axis of the friction-disks, substantially as set forth.

8. The combination of a mining-machine,

undercut hooks secured thereto, and a rail for supporting the machine and provided with a head for engagement with the hooks for the purpose of holding the machine as against rearward and upward movement, sub-, stantially as set forth.

9. The combination of a mining-machine, undercut hooks secured thereto, a rail engagin g said hooks, a supporting-dog constructed to engage the rail and the floor of the chain her, and an extensible brace betweensaid dog and the roof of the chamber, substantially as set forth.

10. The combination of a mining-machine,

in accordance with the position undercut hooks secured thereto near its front end, an extensible support for the rear end of the machine, and a rail provided with a head for engagement with the hooks, the rail and hooks forming a pivotal support for the front end of the machine, substantiallyas set forth.

EDWIN E. CARTER. Witnesses:

DARWIN S. WOLCOTT, F. E. GAITHER.

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