US530510A - Mining-drill - Google Patents

Description

(No Model.) v 3 Sheets-Sheet 1. R. H. ELLIOTT 86 J. B. GARRINGTON.

MINING DRILL.

Patented Dec. 11,1894( m a W O m w awn 2 444,133

(NqModeL) I V 3 Sheets-Sheet 2.

R. H. ELLIOTT 861] B. GARRINGTUN.

' MINING DRILL.

1%.530510. 'Paterit gd Deo.l"1,1894.

"(No Model.) 3 Sheets-Sheet 3. R. H. ELLIOTT & J. B. CARRINGTON.

MINING DRILL.

No. 530,510. PatentedDec. 11,1894.

1 the device shown in Fig. 1.

l sents the outer end of the auger and attachin Fig. 10, along the line 2' z of the said figproved drill.

ROBERT II. ELLIOTT, OF'

PAT NT Urrrcn.

BIRMINGHAM, AND JOHN B. CARRINGTON, OF

JASPER, ALABAMA.

MINING-DRILL.

SPECIFICATION forming part of Letters Patent No. 530,510, dated December 11, 1 894. Application filed February 10, l894. Serial No. 499,815. (No model.)

ToaZZ whom it may concern.-

Be it known that we, ROBERT H. ELLIOTT, residing at Birmingham, in the county of Jefferson, and J OHN B. CARRINGTON, residing at Jasper, in the county of Walker, State of Alabama, citizens of the United States, have invented certain new and useful Improvements in Mining-Drills; 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.

Our invention relates to drills for mining purposes, and especially to drills intended for use in coal, shale, or other soft rock or mineral.

The purpose of our invention isto form an enlarged chamber or pocket at the inner end of the hole drilled with an ordinary drill, and at the same time to remove the ehippings that are formed in the process of enlarging the said chamber or pocket.

Our invention will be understood by reference to the accompanying drawings in which the same parts are indicated by the same lettersthroughout the several views.

Figure 1 represents a side elevation of the pocket boring end of one form of our im- Fig. 2 represents a view of the opposite side of the drill from that shown in Fig. 1, and Fig. 3 represents a plan view of Fig.4 represents a section along the lines a; roof Figs. 1, 2, and 3, and looking to the right in the said figures. Fig. 5 represents a side elevation of. the pocket boring end of another form of our improved drill. Fig. 6 represents a plan view of the device shown in Fig. 5. Fig. 7 reprements shown in Figs. 5 and 6. Fig. 8 represents an end view of the device shown in Fig. 7, and Fig. 9 represents a front view of the holding end of the bit shown in the two forms of bit illustrated in Figs. 1 to 6 of the drawings. Fig. 10 represents a central longitudial section of another form of drill, constructed according to our invention. Fig. 11 represents a section of the device shown ure, and looking to the right, and Fig. 12 represents a section along the line 2' z of ,Fig.

11 and looking to the right. i

In-all of the various forms of the device, the

drill is inserted into acylindrical hole bored by any of the usual forms of hand or machine drills, a cutting wing is extended laterally from near the end of the drill, and the shavings or chips are fed to an auger by suitable means, such as are hereinafter described.

. This auger works the chips or dust toward is provided with teeth 17 adapted to engage in the coal or rock at the ehd of the hole which has already been drilled by a drill of the ordinary type. ing device B is preferably hollowed out, and on the rear face a plurality of teeth 1'), sloping as shown, are provided.

The cutting wing C is pivoted as at c to the side of the bar A,.and terminates in a cutting point or edge 0'. The rear end of said wing O terminates in an arm 0 to which the spiral springD is attached. The other end of said spring is secured as at d to the side of the bar A, and the tendency of thesprin'g is to throw the cutting edge of the wing C outward. The bar Ais slotted as at a. to receive the screws e which secure the reciprocatin g block E to the said bar, the block having a limited longitudinal play regulated by the length of the slot 01., and the height of the teeth I). The sai'dblock E is provided with two or more teeth 6' meshing with the teeth I), and the said teeth are, normally kept in engagement by the spring F which is secured to the pinf projecting from the barA into the slot e cut on the inside of thereciprocating block E. The spring'is kept from revolving on the pinfby means of the stud of the arrows in the various figures, the teeth a will ride up on the teeth b pushing the block E backward against the spring F, and

The inside of this hold ing pins b causing the inclined face e to push the chips in the direction of the auger. As soon as they get to the auger, they are carried by it out through the hole already drilled.

In the device shown in Figs. 5 and 6, the cutting wing O is provided with a segmental rack 0 which gears in the worm 01 attached to the spindle D which is journaled as at d in thelug a attached to or integral with the bar A. In this form of device the position of the wing O is regulated by the hand crank D mounted on the end of the spindle D as shown in Figs. 7 and 8. The said hand crank is held in any desired position by the ratchet wheel (1 and spring pawl D which may be bent to engage the ratchet Wheel as at d or may be constructed like any other pawl and ratchet arrangement.

The device shown in Fig. 8 enables the ratchet to be turned in either direction, and consequently the wing O to be swung out or in, but the same effect might be obtained with an ordinary pawl which might be lifted when the ratchet is to be turned backward.

The operation of the device shown in Figs.

5 to 8 is the same in all other respects, as that described with reference to Figs. 1 to 4. In the form of device shown in Figs. 10 to 12, the operative parts are normally incased in a tube H which is secured by means of screws h to the groove 5 in the head B which is pressed against the end of the drilled hole, and may be provided with one or more hold- The cutting Wing O is fast to a spindle K which is revolved through the desired angle in any convenient way, such for instance, as the ratchet and pawl arrangement shown in Figs. 7 and 8. The outer end of this spindle K is journaled in 2. lug 11' secured in the tube by screws h orin any other convenient way. TheaugerAis in the lower part of the tube, and in line with the open ing beneath the lug H. To the back of the cutting wing O, which is made hollow as at 0 a flexible apron M is attached, which is secured at its lower end to the plate m which is pivoted as at m, and is provided with lugs m projecting beyond the sides h of the opening cut in the tube H, and thus is prevented from falling through the opening outward.

It will be evident that if the tube H be revolved in the direction of the arrow shown in Fig. 11, the wing G will cut the coal or soft rock, which will fall or be pushed through the opening 0 and striking the apron M will fall in the interior of the tube in front of the auger A.

E represents a vibrating block provided with teeth 6' meshing in the teeth of the fixed head 13*, to which the tube H is revolubly secured. This block E is pressed back by these teeth I) and is returned to the initial position by the spring F which is secured to a lug f on the interior of the tube H, and bears against a lug e on the reciprocating block E. It will be seen that as the tube revolves carryingwith it the block, the latter willbe recipro= cated by the teeth b and spring F, and will continuously feed the chippings falling from the apron M to the augerA. It will thus be seen that the various devices herein described all include an adjustable cutting wing, an anger for removing the chippings, and a device for feeding the chippings to the auger. It will be obvious that these various functions may be performed in a great variety of ways, and that many modifications of the herein described devices might be made which could be used Without departing from the spirit of our invention.

Having thus described our invention, what We claim, and desire to secure byLetters Patent of the United States, is

1. In a drill of the character described,the combination with a revoluble wing or cutter and means for moving the same through an angle axially, of an auger for removing the chips or cuttings, and a reciprocating block adapted to .push said chips toward said auger, substantially as and for the purposes described.

2. In a drill of the character described, the combination with a revoluble wing or cutter and means for moving the same through an angle axially, of an anger for removing the chips or cuttings, a reciprocating block provided with teeth at the base thereof, a ratchet engaging in said teeth and adapted to press said block forward, and a spring adapted to press said block backward, substantially as and for the purposes described.

3. In a drill of the character described, the combination with a revoluble spindle or drill body, of a pivoted wing or cutter mounted thereon,means for swinging said pivotedwing outward from the axis of said spindle or drill body, an anger for removing the chips or cuttings, and a reciprocating block adapted to push said chips toward said auger, substantially as and for the purposes described.

4. In a drill of the character described, the combination with a revoluble spindle or drill body, of a pivoted wing or cutter mounted thereon, means for swinging said pivoted wing outward from the axis of said spindle ordrill body, an anger for removing the chips or cut tings, a reciprocating block provided with teeth at the base thereof, a ratchet engaging in said teeth and adapted to press said block forward, and a spring adapted to press said block backward, substantially as and for the purposes described.

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

ROBERT H. ELLIOTT. JOHN B. OARRINGTON.

WVitnesses to the signature of R. H. Elliott:

J. B. ROBINSON, H. F. WILsoN, Jr. W'itnesses to the signature of J. B. Car-rington:

G. B. MoOoRMAoK, J ESSE J. YEATES.

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