US844099A - Boring-machine. - Google Patents

Description

Ho.844,099. PATBNTED FEB. 12, 1907. A. GOLLET.

BORING MACHINE.

APPLIOATION FILED JUNE 30,1905.

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BORING MACHINE.

APPLICATION Hun 1mm 30,1905

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To all whom it may concern:

ALBERT COLLET, or PARIS, FRANCE.

BORING-MACHINE.

Specification of Letters Patent.

Patented Feb. 12, 1907. i

' Application filed June 30, 1905. Serial No. 267,864:-

Be it known that I, ALBERT CoLLET, a citizen of the Republic of France, residing in Paris, France, have invented certain new and useful Improvements in Boring-Machines, of which the following is a specification.

This invention relates to a portable boringmachine that is to say, a machine which can be easily displaced to bring it over the pieces of wood to be bored and which is particularly suitable for the construction of railway-tracks, the boring apparatus being capae ble of being brought just above the sleeper "or tie placed upon the ballast in which it is desired to bore holes serving to receive screws which fix the rails in place.

The machine is fixed by its base upon the rail and has the same inclination as the rail, so that the boring-tool is naturally directed parallel with the transverse axis of the web of the rail, thus forming the hole for the screw in the sleeper in the exact direction re.-

quired for the head of the screw to quite normally bear upon the foot of the rail. In the case of chaired tracks the machine is vertical, the screws being in this case driven normally to the sleeper. This movable apparatus is arranged so as tobe mechanically actuated by means of a suitable motor. in this machine the boring-tool has its point or end guided by a ring adjusted in a centering device, which insures the exact boring of the hole in the sleeper.--

In the accompanying drawings, Figure 1 is a side-elevation of a machine for boring raili which are arranged two bevel-pinions b c,

1 shaft (2 with the driving-shaft-g, actuated by "which are always in engagement. The pinion 7) is keyedupon a horizontal shaft (1, ter- Ininated by a squared head e, which by means of asleeve f allows of coupling the suitable motive power. The other pinion c is keyed upon a vertical sleeve h, which can turn in bearings i i and within which the deviating Fig. 2 isan end view of the same,-

tool-shaft j j can be dis laced. The latter is of square section at the upper part j in order to slide in the sleeve h, and it is of round section at the lower part j, which terminates in the boring-bit holder.

The casing a is held by a frame It, fixed at the end of the tubes Z Z of a support which is mounted upon wheels in order to allow of easily moving the apparatus from lace to place. These two tubes form an ob ique or horizontal Cplane for giving either a slightlyireetion to the apparatus itself, as indicated in Fig. 2, or a'perfectly vertical direction. V

The apparatusmust deviate from the vertical when it is required to be used for boring sleepers for certain forms of tracks in order that the screws may have their axes normal to the foot of the rail, which is oblique. When,

however, it is re uired to bore sleepers for tracks with doub e-headed rails, the boring apparatus occupies a vertical position, the tubes Z Z being then horizontal, the obliquity of the rail being obtained in this case by the foot1 of the chair and the screws being vertica The machine is reversible upon the tubes Z Zin order to have the levers s and 3 3, here inafter referred to, in front of the machine.

At the base of the casing a is fixed a tube m, within which passes the lower part 9' of the vertical shaft, which turns in bearings 11. a, fixed on a sleeve 0, (shown in Fig. 3,) which can be longitudinally displaced in the outer tube m. This sleeve-0 serves to guide the tool-shaft j inits' vertical movement. To this end the tube m is provided with two elongated openings p, through which pass two trunnioris q, with which the sleeve 0 is provided.- These trunnions are engaged in eyes made in thebranches of the fork 1", fixed to a hand-lever s. The'ends of the fork r are connected byjoints to small connecting-rods t, which are themselves jointed to a shaft t, forming a tie-bar for the frame is. A spiral spring a, fixed to a rod 1) between the two branches of the fork r and to the casinga, tends to keep the fork r in its elevated position.

The lower end of the tool-shaft y' is screwthreaded to receive the tool-holder consisting of a screw-threaded socket w, screwed on the shaft 3' and which bears through the medium of a ball-bearing against the lower bearing 12/.

To the lower part of the tube 'mis connected a casing in, which is stayed by means of four legs is, fixed to the frame It. This casing is formed with a horizontal projecting por tion as, which guides two pairs of jaws Z Z. These pairs of jaws, one seen at each side of the boring-tool, are clearly shown inFig. 2. It is necessary to thus have two pairs of jaws in order that the shaft of the boring-machine screw-threads, so as to receive a bar'2, provided with correspondingly-opposite threads. This bar 2 is terminated on the outside by a square heady, on: which is mounted a notched or serrated washer 2 in engagement with corresponding notches or serrations in the boss 2 of a lever 3, the said boss 2 being loose upon the square head ythat is to say, its central opening has a diameter equal to the diagonal of the square-of y. A nut e screwed over the threaded endof the bar 2 insures the engagement of the notches or serrations z and 2., the washer .2 upon the bar 2 being secured by the square y.

By "unscrewing the nut e the notched or serrated washer 2 can be disengaged from the socket '2 of the lever 3. By thenturning the washer z in one direction .or the other, and consequently moving the bar 2 by the square y, the two jaws Z Z, mounted on the bar 2, are moved toward or away from each other. The distance apart of the jaws Z Z can be thus easily adjusted to.- enable them to grip any kind of rail. When the distance apart of the jaws Z Z has thus been adjusted to suit the type of rail of the track tobe laid, the washer z and; the socket z are again engaged and the nut e is screwedup. Now by acting upon the lever 3- and causing it to only move a short distance the final movement of the jaws toward each other against the sides of the head of the rail can be effected, owing to the very steep pitch of the thread of the screw on the bar'2.

To keep the'lever 3 in a suitable position in order'that the jaws Z Z may remain firmly applied against the sides of the rail, I provide a sector 5, which guides the lever 3. It is fixed to the frame 7c and has a sleeve 16 mounted upon the tube Z. This lever 3 should be stopped upon the sector 5 even for the smallest angular displacements of the said lever. For this purpose the upper face of thesector 5 can have ratchetteeth and the lever 3 be provided with a spring-pawl; but this arrangement would compel the lever 3 to be moved at least the distance of two teeth: of the sector. The arrangement I preferand which is shown in Fig. 5 drawn to a larger scale consists in terminating the lever 3 by a fork 3, in which is engaged the cylindrical. body 4 of a piece the head of which forms a stirrup 15 embracing the sector 5. The sector 5 is fixed to the tube Z by a long sleeve 16, carrying a screw-threaded lateral socket 17, in which enters a screw 22, the head of which bears upon the sector 5.

The cylindrical body 4 is screw-threaded to receive the screw 22, which is fixed on the small hand-wheel '19, which, is operated to fix the lever and the sector, or vice versa. The end of the screw 22 bears upon a disk 20, provided with a stud 21, engaged in a hole made in the center of the end of the screw 22 and which centers the disk.

By turning the hand-wheel 19 from left to right the end of its screw 22 presses upon the disk 20 and the hooks of the stirrup 15 act upon the rear face of the sector, while the disk 20 presses upon the other face, so, that the lever 3 is rendered quite immovable with relation to the sector 5. i

The arrangement hereinbefore described which allows of regulating the relative dis' tance apart of the two jaws. Z Z of a pair also allows of modifying the distance which separates the shaft of the boring-machinethat is to say, the shaft of the tool-from the separating-shaft in the middle of the two jaws, which is necessary in order that the machine maybe adapted to rails having feet of different width. To obtain this latter adjustment, it is necessary to cause one of the jaws to leave the guide-socket ac to allow of screwing or unscrewing it upon its thread. The socket 90 has at its ends a partial circular projection a, behind which is hooked a bent finger I), which forms part of the lever 3. By this means the device comprising the lever 3-, bar 2, and jaws Z is retained against the end of the socket as and. within the said socket, as shown in Fig. 2. When the lever 3hasbeen caused to pass beyond the end of the sector after having removed the stop-screw 23, the finger Z) will have also passed beyond the end of the circular projection a, so that the lever 3 being no longer retained the pair of jaws can be withdrawn from the socket 90, as hereinbefore stated.

Behind the pairs of jaws is arranged a kind of spring presser-foot 6, which carries at its lower part a socket 7 for guiding the boringbit and which has a conical centering projection 8.

When it is required to use the machine, it is caused to advance above the sleeper in which it is required to bore holes. It is then placed in position'on one side or other of the rail. The machine is placed so that the socket 7 engages in one of the holes made in the feet 9, arranged under the rail. By reason of the conical shape of the part 8 of the socket 7 it becomes placed in its descending movement exactly in the center of the hole in ICC Iii;

the foot 9, and as the said socket 7 guides the descent of the tool the latter is perfectly centered.

In cases where therail rests directly upon the sleeper the socket 7 is simply PlELCGCl against the foot of the rail. ment the jaws come and embrace the rail.

It is then only necessary to act upon the lever 3, the screw 22 of the hand-wheel 19 being loosened, in order to cause an angular displacement of the bar 2, having con The machine being thus exactly in' the position which it ought to occupy, it only remains to bore the hole. The shaft 7' j being in movement, the lever s is depressed, which causes the fork rto descend. The latter, by

means of the trunnions q, carries along the sleeve 0, which bears upon the tool-holder j the driving-shaft.

and causes it to descend. The tool-holder, which is fixed'to the lower part of the toolshaft, also descends, and the square upper part j of the said shaft descends in the sleeve h, on which is keyed. the pinion 0, continuously operated by the pinion b, keyed upon the shaft, which receives motion from It follows that the tool always rotates and that the simple descending movement imparted by the lever 8 causes the tool to descend and bore a perfectly-centered hole in the sleeper, the direction of the hole being exactly right for the head of the bolt which is to be engaged therein to bear quite normally upon the foot of the rail or of the chairj As soon as the operator ceases to act upon the lever s the latter resumes its initial position, being brought back by the spiral spring u, and the tool rises. It then only remains to loosen the screw 22 of the hand-w heel 19 and to bring back the other lever 3 to its starting position, which causes the release of the jaws Z Z, and the machine is ready for a fresh operation.

At theupper part of the machine is arranged a lubricating-cup 10, in which dips a wick 11, which descends into a tube. 12-,

forming a siphon, and. which lubricates all j the sliding and revolving parts of the apparatus. l

of motor is employed for this purpose, none has been shown. It may be explained, however, that the motor may be mounted one In this move The car or car-truck and moved along the railw aytrack with the boring-machine; but this feature is not herein claimed. v i

Having thus described my invention, I claimi 1. A machine for boring holes in railway ties or sleep ers, having a supporting-frame for the operative mechanism, the base of which is adapted to rest on the rail that is to be secured to theties, two like pairs of rail-gripping jaws depending below the frame, guides for the said jaws, means for operating the respective pairs of jaws, a bit-holder and bit disposed at apoint in a plane which is situated half-way between said pairs of jaws and with their common axes at right angles to the base cf the machine, a guide for said bit and holder, and means for operating the same.

2. A machine for boring holes 111 rallway ties or sleepers, having a frame to support the operative mechanism, a bit-holder and bit mounted in the frame, means for operating said holder and bit, a, pair of jaws for gripping the'track-rail and securing the machine firmly thereto, a guide for the said gripper-jaws, a bar 2 mounted rotatively in said guide and having on it steep-pitched right and left screws which engage the respective jaws for moving them, and having also a square at its outer end, a lever, the boss of which turns loosely onsaid square and has teeth. on its outer face, a washer with teeth on its face to interlock with those on the lever, said Washer fitting slidably but non-rotatively on said square, and a nut which screws onto the outer end of the bar 2 and bears on said washer. j

8. A machine for boring holes in railway ties or sleepers, having a frame to support the operative parts, a bit-holder and bit upright in the frame, a guide for said holder and bit, means for operating said holder and bit, and means for securing the machine firmly to a track-rail, said means comprising a transversely extending tubular guide for gripper-jaws, said guide being provided with a circular projection a, the bar 2, rotatable in said guide and provided with right and ties or sleepers, having a frame to support the operative mechanism, a boring-bitand its holder, means for guiding and operating said bit and holder, and means for securing the machine firmly to a track-rail during the boring operation, said means comprising a pair of gripper-jaws for gripping the rail,'a guide for said jaws, a rotatable screwthreaded bar in said guide for operating the jaws, a lever for operating said bar, a guide sector adjacent to said lever, and a screw device which embraces said lever and guidesector and serves to clamp the lever to the sector at any point desired.

5. A boring-machine for the purpose specified, having a frame, a casing a, an up right sleeve h rotatable in said casing, said sleeve being square interiorly, a wheel a secured on said sleeve, means [or driving said wheel and sleeve, a tool shaft or holder having a squared upper portion which plays in the sleeve 72/, a boring-tool carried by said ALBERT COLLET.

Witnesses:

JULEs ARMENGAUD, Jeune, HANsoN 0. 00x12.

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