US516952A - Drilling-machine - Google Patents

Description

(-No Model.) 2 Sheets-.Sheet 1.

J.TR0UNS0N.

DRILLING MACHINE.

No. 516,952. Patented Mar. 20, 1894.

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(No Model.) 2 Sheets-Sheet. 2.

J. TROUNSON.

DRILLING MACHINE. No. 516,952. Patented Mar. 2 0, 1894.

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UNITED STATES PATENT OFFICE.

J OI-IN TROUNSON, OF MINERSVILLE, PENNSYLVANIA.

DRILLING- MACHINE.

SPECIFICATION forming part of Letters Patent N0. 516,952, dated March 20, 1894.

Application filed June 2, 1893. Serial No. 476,352- (No model.)

To all whom it may concern:

Be it known that I, JOHN TRoUNsoN, a citizen of the United States, residing at Minersvi1le,in the county of Schuylkill and State of Pennsylvania, have invented certain new and useful Improvements in Drilling-Machines; and I do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in the art to which it appertains to make and use Ithe same.

This invention relates to an improvement in drilling machinery adapted principally for use in coal mining, although it can be applied for other drilling purposes in various kinds of material, the object of theinvention being to provide a simple and efficient combination of mechanical parts which will operate easily and effectively with the expenditure of as small an amount of power' as possible, the drilling mechanism being reversible, and the drill'itself being hollow and supplied with a hydraulic arrangement whereby the cuttings or borings made by the drill may be easily removed from the drill hole,besides affording a means forinjecting water into the hole so as to wash the same and allow the drill to operate freely and without clogging, and the invention consequently consists essentially in the construction, arrangement and combination of parts and in numerous details thereof, substantially as will be hereinafter described and then more particularly pointed out in the appended claims.

In the accompanying drawings illustrating my invention: Figure lis a side elevation of my improved drilling machine complete, the operating mechanism, drill and hydraulic arrangement being all clearly represented, and the latter beingv shown in section. Fig. 2 is an enlarged sectional detail of the screw shaft,

the traveling nut thereonand its pivoted yoke f piece, together with the socket which carries said yoke piece, and accompanying parts. Fig. 3 is another sectional detail view, showing the hollow drill and the operation of the mechanism which operates to rotate the same. Fig. 4t is a sectional detail View of the loose collar on the upper end of the drill, to which collar the hose pipe is connected. Fig. 5 is a modified form of the anchor bar, which supports the drilling machine. Fig. 6 is a sectional view of the pump mechanism whereby the Water is withdrawn from the drill hole after the same has been completed. Fig. 7 is a view representing the camping bar.

Similar letters of reference designate corresponding parts throughout all the different figures of the drawings.

-A denotes the feed screw of the machine, it being a screw-threaded shaft and arranged to operate to feed the drill forward. This screw shaft may be of any desired size, shape and kind of screw-thread. It is arranged within a skeleton frame or housing which is preferably of triangular form, and has the longitudinal pieces B and the end blocks B B. It will bessen that the endsof thescrew .shaft A, are jou rnaled in the end pieces B', and project through the same above and below, at which points said ends of the shaft A are shaped as projections B2, having four or any other suitable number of inclined sides or pieces, as shown, while the shaft A, furthermore, is provided Within the pieces B with the fixed collars a-see Fig. S-Which support the shaft in position endwise. These projections B2 are used to connect the screw shaft to the' drill, and for this purpose they are inserted loosely into correspondinglyshaped sockets in the piece L--see Figs. l and 3-which forms the upper end or head of the drill.

Y The screw shaft A is rotated by means of suitable gearing located within each of the end pieces B. This gearing consists essentially of the gears I which are securely fixed upon the screw shaft A-see Fig. 3-and of the smaller pinions jj which engage the gear I at opposite points on opposite sides of the shaft A. These pinions j j are carried by the shafts J J which are supported inthe pieces B and on the projecting ends of which are attached the crank handles J J as clearly shown in Fig. l. These crank handles are provided with a series of openings so that they may be adjusted properly upon the shafts J J, and furthermore said handles are provided with square shaped notches or indentations so as to enable them to be used as wrenches Whenever they may be required for such purpose. It will thus be observed that Ioo l there is an arrangement of crank handles and gearing at each end of the screw shaft A and also that said screw shaft is constructed and arranged in the same manner at both its ends, consequently the sha-ft A, with its longitudinal housing B and other parts, mayreadily be reversed in position, or turned end for end and either of the projecting ends B2 of the screw shaft A, may be connected to the drill. The object of thus making the screw shaft and its supporting structure, reversible, will be readily apparent after describing the remaining parts of the drilling machinery and pointing out'the method of its operation.

On the screw shaft A is a sleeve or nut D, having any desired size as to diameter and length and consisting preferably of spring metal, being internally screw-threaded t0 correspond with the screw threads on the screw shaft which are engaged thereby and being split longitudinally along one side so that it can be tightened when the threads 1oecome worn enough to loosen the nut. The meeting edges of this nut D are secured together in order to clamp the nut upon the screw shaft, by means of a set screw d passing through an ear CZ on one side of the split in the nut and entering a projection on the other side of said split, as is clearly shown in Fig. l.

E designates a yoke piece which is pivoted to the nut D and occupies substantially a horizontal position. The pivoting of the yoke to the nut is effected by means of horizontally projecting pins, formed on the nut and passing through perforations in the ends of the members of the yoke piece. The yokepiece is formed integral with a T-head, consisting of the upper andlower projections E', all as clearly represented in Fig. 2. This T- 4head is located reversibly within a rectangular socket F. It will be readily seen that the T-head can be turned end for end in said socket whenever required and thus the yoke piece and its head may be reversed in position whenever the screw shaft and its housing are reversed. The T-head is locked with- 'in the socket F by means of a dog G, having a piece g which tits down tightly and neatly over the upper member E. This dog G is supported upon a horizontal shaft g which is mounted in curved slots in the side members of the socket F, as is clearly shown in Fig. l, and an adjustable vertical set screw h which enters the upper edge of the rear side of the socket F, as shown in Fig. l, and also in Fig. 2, bears laterally against the shaft g and keeps the same within the curved notches where it has a bearing and where it can readily rotate in order to permit the dog G to occupy either a position where it locks the yoke in place or a position where it frees the yoke from engagement. By removing the screw h, the

shaftg can readily be taken out from the curved notches in which it is seated.` The shaft g furthermore is provided at one end with a slot and the portion thereof which lies within said slot is made four-sided as shown in Fig. l, in order that a dat spring IjI which is pivoted at its lower end to the socket F may bear upon one or the other of the said sides of the shaft. Of course if desired, the portion of the shaft within the aforesaid groove may have more than four sides or even less. The object of this iiat spring being thus in contact with the flattened sides of the shaft is to hold said shaft either in one or the other position as may be required and consequently hold the dog G either in a locked or unlocked position. The end of the shaft g adjacent to the aforesaid slot, is squared for the ready application of a wrench thereto for the purpose of rotating the said shaft and thereby actuating the dog. The socket F is secured by means of a bolt f to the anchor bar C, which supports the drilling machine. Said bar may be of any suitable and desirable form and is designed to be stationed rigidly in the rock or other material so as to serve as a strong rigid support for the drilling machine upholding the same in a proper position while it is operating. This bar C is preferably provided near its upper end with a series of openings or perforations c, through which the bolt f passes. Thus the socket F can be secured to the bar C, at either one of the perforations c. It therefore-may be adjustable so as to locate the drilling machine at the proper height from its work. The socket F may be reversed in position, with its solid end above and the dog G below. This dog Gis not to hold the T- head from sliding back but to hold the end of the T-head from rising up. When locked, the pressure of the machine will then bear against the solid end of the box F. This pressure being against the end of the drill, forces the inner end of the T-head to rise up when the dog G is thrown back.` This is to release the screw shaft from the drill and Vit takes off the pressure at once so that the by the reference letter C and having at itsV lower end the middle point C3, and the laterally projecting inclined feet C2 C2." This form of bar is especially designed for usein connection with a wooden support, into which it is driven. The single point, as on the lower end of bar C is generally sufficient in the case of a rock support, but when the machine is mounted upon a log or similar wooden flooring, it is found better to have the bar provided with inclined pointed braces C2, as shown.

The drill proper consists of a hollow or tubular piece K of greater or less length, the lower end of which is made flaring and is internally screw-threaded to receive a plug K', having a central passage K2. Said plug K is screwed into the lower end of the hollow drill and binds securely between `it and the IOO IIO

lower end of the drill, the cutters k c which operate to cut the coal or other material. In the upper end of the hollow drill K is screwed the head L, having vertical external slots Z Z, and also having a circular surrounding groove, in which is seated loosely an encircling collar M, to which the hose N is connected. This loose connection of the collar with the head L is for the purpose of permitting the head Lto freely revolve during the revolution of the drill, without compelling the collar M to likewise revolve, a thing which would be impossible owing to the connection of said collar with the hose N. Water coming through the hose N, enters the collar M and passes down through the grooves Z Z into the hollow drill and downward through the passage k2 in the plug K into the bottom of the drill hole, where it serves a useful purpose. The hose pipe N is preferably a piece of liexible tubing which enters the cylindrical chamber O of the hydraulic mechanism or force pump, the entrance taking place at a point near the bottom of the chamber O. Said chamber O is also connected with a tank P, by means of the pipe Q, having a ball-valve q therein. Within the chamber O, is aV piston R, having a vertical upwardly extending rod r which projects through the upper end of chamber O and carries a handle r. The rod r is provided with a spring S which engagesthesameandistensionedbetween theupper inner end of the tank O and the piston R. This spring exerts a downward pressure on the piston R. The operation of this hydraulic lmechanism will be readily apparent from this description of its construction. By lifting the piston R from the position shown in full lines in Fig. 1, to the position shown in dotted lines in the same figure, it will be evident that the suction thereby produced will be sufficientto draw Water upward from the tank P into the chamber O, and partially or almost completely fill the latter. When the desired amount of water has been drawn into said chamber O, the piston R may be allowed to come to rest and then atonce a downward pressure will be brought about, which will instantly close the ball valve q and prevent anywater from returning into the tank P. This downward pressurewill be kept up uniformly by means of the downwardly acting spring S. The water within the chamber O will therefore be caused to flow out through the hose pipeN under a constant pressure. Said pipe Nis provided at a point near the chamber O, with a cock, to regulate the outiiow. ,Thus the water will be fed from the chamber O, through pipe N into the hollow drill and permitted to course easily down- Ward through the same into the drill hole, while the drill is in operation, thereby enabling the latter to operate easily and dislodging the cut material from contact with the drill knives, permitting the latter to operate much easier and more effectively upon the work, which is thereby kept. lubricated and the drill is enabled to operate with facility and in an effectual way.

Water can be withdrawn from the drill hole after the drill has been removed therefrom by means of the'mechanism shown in Fig. 6, which consists of a pump. The tubular end t of said'pump will be forced down into the drill hole and as soon as it is lifted up the ball valve will close and hold the Water that is in the pipe above said valve. The result will be to draw the water up through the tube t, opening the ball valve t', in the .bottom of the chamber T, and then passing through the strainer or perforated diaphragm t2 and out through the tubular part T. Thus water and dirt may be removed from the bottom of the hole by the working of the pump up and down. The ball valve can be placed at either or both ends of the pipe.

In Fig. 7, I have represented an improved tamping bar U, having the forked end u, while it is formed near its other end with an enlargement U which serves as a sort of'handle by means of which the bar is more easily manipulated and the hand kept in a preferable position naturally upon the bar while it is being used. The enlarged part of the bar U, is provided with aV-shaped opening U2 which enables the bar to be employed more effectually for its purpose.

Having thus described my invention,what I claim as new, and desire to secure by Letters Patent, is

l. In a drilling machine for use in coal mining and for other purposes, the combination with a feed screw, of the longitudinal housing or framev therefor, and actuating gearing for the screw located in each end of thehousing, substantially as described.

2. In a drilling machine, the combination with a screw shaft, of a longitudinal housing or frame therefor, through the ends of which the shaft projects, substantially as shown, and actuating gearing in each end of the frame for driving the shaft, substantially as described.

3. The combination in a drilling machine, of the screw shaft, a longitudinal frame or housing therefor, actuatingv gearing in each end of the frame for the shaft, an internal threaded nut on the shaft, a yoke pivoted onsaid nut, a socket for supporting the yoke and a supporting bar for the machine to which bar the said socket is adj ustably secured, substantially as described.

4. In a drilling machine, the combination with the feed screw shaft, of a nut clamped thereon, a yoke pivoted to said nut, having a T-head, a socket for receiving said head, a pivoted dog for securing the head within the socket and the supporting bar to which the socket is secured, substantially as described.

5. rlhe combination with a drilling machine, of the feed screw shaft, a nut or sleeve thereon, a yoke pivoted to said nut and having a T-head, a socket for receiving said head, a pivoted dog for securing the head withinthe socket, said dog being mounted upon a removable shaft, a'nd a spring for holding said dog in place, together with the supporting IOO Ilo

bar to which the socket is fastened, substantially` as described.

6. In a drilling machine, thecoinbination with the shaft A, of the nut D thereon, yoke E pivotedto said nut and having a T-head, with projections E 4ELthe socket F, pivoted dog G on shaftg and spring H which engages a groove on said shaft having fiat faces within the groove, substantially as described.

7. In a drilling machine, the combination with the screw shaft, of a nut thereon, through which nut the shaft travels up and down, a yoke pivoted` to said nut, a socket adj ustably secured tothe supporting-bar for containing said yoke, a longitudinal frame or housing for the screw shaft and actuating gearing at each end of the frame for driving `the shaft, said gearing consisting of pinionsjj on crank shafts J J, which pinious engage the gears I on the screw shaft, andthe drill proper which is engaged and driven byone orthewother end ofthe screw shaft which projects through the frame, substantially as described.

8. In a drilling machine, the combination with thescrew shaft, a nut thereon through which the shaft travels `up and down, supporting means for holding said nut in a rigid position, a longitudinal frame or housing for

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