US1247407A - Attachment for coal-cutting machines. - Google Patents

Description

l. JENKINS. ATTACHMENT FOR COAL CUTTING MACHINES. APPLICATION F|LED1uNE20.19x3. RENEWED Nov. 2o. |915. L'YAUY.,

\\\ V A W l.

.m -mn I. JENKINS.

ATTACHMENT FON coAL CUTTING MACHINES. APPLICATION FILED JUNE 20| 1913- RENEWED NOV- 20| 1915. IAQQ?.

Patented Nov. 20, 191?.

3 SHEETS-fSHEET 2.

1. JENKINS. ATTACHMENT FOR COAL CUTTING MACHINES. APPLlCA'ION FILED JUNE 20| 1913. RENEWED NOV. 20| |9l5.

Patented Nov. 20, 1917. l

3 SHEETS-SHEET 3.

LQQYAU?,

l @ad JONATHAN JENKIS, OF JENKINS, KENTUCKY, ASSIGNOR T0 'THE JEFFREY MANUFC TURIN@ COMPANY, 0F COLUMBUS, OHIO, A CORPORATION OF OHO.

ATTACHMENT FOR COAL-CUTTING MACHINES.

Leanne?,

Application filed June 20, 1913, Serial No. 774,885.

To all whom z't may concern:

B e it known that I, JONATHAN JENKINS, a cltizen of the United Sta-tes, residing at `Jenkins, in the county of Letcher and State of Kentucky, have invented new and useful Improvements in Attachments for Coal- Cutting Machines, of which the following is a specification.

The present invention relates to improvements in that type of mining machines in which the coal cutting mechanism is supported on track wheels, the machine being supported 0n the mine track both while it is being transported from point to point in the mine and while 4the cutting mechanism engages the coal to form akerf. In a machine of this character which is now in use, the cutting mechanism is mounted upon the wheel supportedV base frame or truck so as to project horizontally beyond the -lines of the truck and so as to swing latervcutting' machine of the type specified,

equipped with the improved attachment;

-F1g. 2 is a plan view;

Figs. 3 and 4 are2 respectively, a frag? mental view, partly 1n front elevation and partlyl in central transverse section, and a fragmental plan view, showing a modification. l l

These gures are diagrammatic to a certain extent in that they discloseonly the essential features of the invention, the sectioning in Fig. 3 being for the pur ose of'A slllowing` the pivotal mounting of t e bedp ate. y

Referring more particularly to the drawing, 1 deslgnates, generally, the truck of the machine, the operating mechanism, or machine proper, 3 the bed-plate whereon the operating mechanism is mounted, and 1 the cutting mechanism. All of these instrumentalities are ofl conventional vconstruc-l tion, and for that reason specific description` and illustration thereof are omitted.

Specication of Letters Patent. I Pang-mtg@ Nrw/o 2U), 1917,

Renewed Novemberw, 1915. Serial No. 62,639.

However, it may be stated that the bedplate 3 has an approximately central pivotal connection 33 with the ioor or frame 5 of the truck, as shown in Figs. 2 and 3 which permits it to turn or swing in' a horizontal plane in either direct-ion, and that the cutting mechanism 4 is of the endless chain type and is driven in any desired manner from the operating mechanism 2, the latter including a suitable motor. rllhe chain is indicated in Fig. 1, but is omitted from Fig. 2, and it operates in the usual manner when driven, to form the horizontal kerfs in the breast of coal, the rear end of the arm 6 vwhich supports the chain being rigidly connected with the bed-plate, so as to turn or swing therewith. In Fig. 2 the operating.

mechanism includes the parts whose positions are conventionally indica-ted by the rectangles adjacent to the numeral 2, the. position at the left being that occupied by such translating devices as the builder sees it to use, such as an armature and held-magnet of any suitable sort, andthe position at the right of said numeral 2 being that occu'pied by the principal parts of the power transmitter. And the drawing is merely conventional in this respect, as numerous forms of operating mechanisms and motors, and numerous styles of connections' are Well understood. by mining machine builders. The truck is designed to travel along a suitable track 7, its propulsion being effected through the agency of the motor.

The machine may be braced, if desired, and held stationary during working by means of a pair of jacks 8 and9, both jacks being or conventional construction and being operated by the usual hand-wheels. lin the present instance, the lower .or side jack 8 has a universal-joint connection 10 with the truck Hoor 5, while the upper, `or root jack 9 is arranged at the opposite side of the truck trom the jack 8, and rests at its lower end on the forked outer end l12 et a upporting bracket 13, this bracket constiice' ' ative position.

the corner plate and the end of the' frame are extended or elongated, as indicated by the numerals 18 and 19, the latter construction permitting the cutting mechanism to swing through a greater arc. "The bracket,

'in its operative position, projects at right angles to the side 'of the truck, as shown in full lines in Figs. 2, 3 and 4, but may be moved on entering or leaving the mine, into aposition in which it extends either directly in front of the truck, or rearwardly along the side'thereof, as indicated in dotted lines in Figs. `v2 and 4, the afore=men tioned parts 18 andv 19 enabling the bracket to clear the adjacent truck-wheels. Tlie connection 10 between the lower jack 8 andthe truck floor likewise permits a swinging movement of that jack into and out of oper- To hold the bracket 13 in operative position, there is preferably employed a second pin or bolt 20 which is removably inserted through registering openings in the upper bracket member and the corner plate, (and, where the short plate 16 is used, an additional opening in the truck Hoor).

The afore-mentioned swinging `or turning V movement of the bed frame 3 is effected4 by 'y means of the "following devices.

21 is a winding drum mounted on a shaft 22 which is driven through suitable connections ,by the operating mechanism 2. A rope or cable 23 has one end secured to the winding'drum 21 and is arranged to pass over a guide pulley 24 the frame of which has a swiveled or caster-like mounting in a sleeve 29 carried by a bracket 30 on a base 28 which carries the operating mechanism and the cutting mechamsm.

The cable 23, after passing over the ide pulley 24, is adapted to be extended lterally and connected with the outer end of the bracket arm 13 so that the latter may constitute an abutment to sustain the draft of the cable when the drum 21 is rotated, thereby causin the b'ed plate -3 and the parts mounted t ereon to swing laterally as will readily beunderstood. The cable 23 may be connected with the outer end of the bracket arm 13 in any( suitable manner but I- preferk to arrange a guide pulley 25 between the arins ofthe forked end 12 of the bracket -arm, the ulley being mounted on an upright pin 11. he cable is then provided at its free end with an eye 26 adapted for detachable engagement with a hook 27 on the base 28. .By doubling the cable back in the manner described, it will be understood that the stress on the cable is correspondin ly lessened and for this reason I prefer t is form of construction. 5

In operation the machine, with the bracket arm 13 swung forward or rearward according asthe construction used ils that shown in Figs. 1 and 2, or that shown in Figs. 3

and 4), movesover the mine track to 4the end of the entry to be extended or up to the room face to be cut, the track extending longitudinally toward the said face. With the machine at the face, the first operation is the making of the entering or sumping cut. My present improvements do not relate to this sumping cut and it need only be stated in passing that to ei'ect the sumping cut the bed plate 3 is swung to the right until the forward end of the cutter frame 6 is at the l right rib.` Thereupon, the parts being now held yagainst swinging, the cable 23 is carried forward to a point adjacent the coal face where it is made fast to a suitable anchor or jack, and then by the winding of the drum 21 the machine is fed forward bodily on the-track toward the face of the coal so that the cutting mechanism is thrust longitudinally into the vein. It will of course be understood that 'if the construction shownl in Figs. 1 and 2 is 'being used, the bracket arm 13 must be swung rearward from the position shown in dotted lines in Fig. 2 to permit the enterin cut to be made.

When the sumping cut has been completed, the bracket arm 13 having been made fast in its operative position (shown in lfull lines in Figs. 2, 3 and 4), the cable 23 is carried out around the guide pulley 25 and thence back to the machine and made fast to the hook 27. Then, the jacks 8 and 9 having been set to secure the machine firmly in pothe cable can now be disengaged from the bracket 13 and used in a wellknownmanner to feed the machine bodily away from hefface thereby finishing the cutting of the Heretofore it'yhas been customary in handling machinessuch as hereinbefore described to effect the lateral swinging of the cutting mechanism by connecting the Ilraft cable to an anchor or jack made fast adj acent the left rib toward which the cutting proceeds. The setting of such an anchor or Jack consumes considerable time and unless 1t is set very securely, the machine operators are subjected to danger incident to the anchor giving way; With my improved bracket construction, it will be seen that I provide an abutment for the feed cable which 'is quite secure and which can be set in operative position quickly and easily.

meneer While, as has been stated, the machine may be equipped for bracing purposes with the pair of jacks, it is to be understood that if it is made strong enough, the roof jack may be omitted, and the machine held stationary during working solely by means of the side jack, and for thesame reason, the latter jack may be also omitted if the weight and strength of the machine are sufficient. In either instance, the shiftingfof the cutting mechanism is effected through the agency of the motor and Windlass, the pivotally -mounted bracket being, of course, employed. As the construction just referred to isotherwise identical with that shown and described, additional illustration is obviously unnecessary.

I claim l. In a mining machine of the type specified, the combination, With a truck, a bedplate revolubly mounted thereon, and cutting mechanism and operating mechanism for the same mounted on the bed-plate for movement therewith; of a bracket pivotally connected to said truck for movement into position at right-angles thereto; means for fastening said bracket in such position; a jack carried .by said" bracket for holding the truck stationary; and a 'Windlass having a driving'connection with said operating mechanism, the cable of said Windlass being connected at opposite ends With the Windlass drum and the bed-plate and engaged intermediate its ends with said holding means,

to ei'ect the rotation of said bed-plate.

- 2. In a mining machine of the character set forth, thecombination of a truck frame, track Wheels supporting the same, an elongated cutting mechanism carried by the truck frame and extending horizontallv therefrom, said cutting mechanism being mounted to swing laterally across the front end of the truck, and means for edecting the said lateral movement of the cutting mechanism comprising a Winding drum mounted to move bodily With said mechanism, a bracket arm pivotally mounted on the truck frame, said bracket `arm being adapted to swing from an inoperative position parallel to the longitudinal lines of ,the machine to an operative position approximately at right angles to the longitudinal lines of the machine, means for securing the bracket arm 'in operative position, and-a cable secured' at one end to the winding drum and adapted to extend to and be connected with the outer end of the bracket arm.

3. In a mining machine of the character setrforth, the combination of a truck'frame, track wheels supporting the same, an elongated cutting mechanism carried by the truck frame and extending horizontally therefrom, said cutting mechanism being -mounted to swing laterally across the front end of the truck, means for eiiecting the said lateral movement of the cutting mechanism comprising a Winding drum mounted to move bodily with the sald mechanism, a bracket arm mounted on the truck frame and arranged to extend laterally and upwardly therefrom, a jack disposed upon the outer endof the bracket arm and adapted to engage the roof of a mine, and a cable secured at one end to the Winding drum and adapted to be connected With the outer end of the bracket arm.

In testimony whereof I have hereunto Set my hand in presence of two subscribing Witnesses.

JONATHAN JENKINS.

Witnesses:

W. A. CAMPBELL, F. E. JOHNSON.

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