US2201033A

US2201033A - Track drilling machine

Info

Publication number: US2201033A
Application number: US169523A
Authority: US
Inventors: Edward A Everett
Original assignee: NANDE CORP
Current assignee: NANDE Corp
Priority date: 1937-10-16
Filing date: 1937-10-16
Publication date: 1940-05-14
Anticipated expiration: 1957-05-14

Description

May 14, 1940.

E. A. EVERETT TRACK DRILLING MACHINE Filed oct. 1e, 1937 5 Sheets-Sheet 1 K QRN 1mm, wm

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lNv 5% TToRNE May 14, 1940. E. A. EVERETT TRACK DRILLING MACHINE Filed 0t. 16, 1937 5 Sheets-Sheet 2 INVENTR iadwpf? ger/eff Tf RNEY n May 14, 1940. l E. A. r-:vERr-:TT 0 2,201,033

` .TRACK DRILLING MACHINE Filed Oct. 16, 1937 5 Sheets-Sheet 3 INVENTOR RNEY May 14, 1940. E. A. EVERETT TRACK DRILLING MACHINE Filed Oct. 16. 1937 5 Sheets-Sheet 4 INVENTOR May 14, 1940. Y E. A. EVERETT 2,201,033

l TRACK DRILLING MACHINE l Filed Oct. 1,6, 1937 5 Sheets-Sheet 5 INVENTOR A oRNl-:Y f

Patented May 14, 1940 eATENT OFFICE 2,201,033 TRACK DRILLING MACHINE Edward A. Everett, New York, N. Y., assigner to Nande Corporation, New York, N. Y., a corporation of New York Application October 16, 1937, Serial No. 169,523

' 9 illaims.i (Gl. 778) When adapted for drillin-g the web of the rail This invention relates to machine tools for operating on the rails of a railway track and, as shown in the drawings, is adapted for drilling the rail after itis in place in the track. An object of the invention is to provide a portable drilling machine, preferably operated from a source of self-contained power, for drilling the rail. Another object of the invention is to adapt the machine for drilling the head of the rail,

. or for drilling the web of the rail; another object of the invention is to provide means for elevating the frame of the machine relative to the rail and another object of the invention is to provide means for elevating the supp-ort of the machine relative to the ties.

Other objects of the invention are to facilitate the use and operation of the machine in the various positions in which, it is used, and which Will be more particularly understood from the following specieation `and from the accompanying drawings, illustrating the preferred form of the invention and in which:

Fig. 1 is a side View of the drilling machine complete, mounted on a rail in position for drilling the rail head;

Fig. 1a is a fragmentary part of the tie supporting mechanism for the machine in Fig. 1;

Fig. 2 is a front view of the elevating mechanism for raising and lowering the frame relative to the rail;

Fig. 3 is an end View of the elevating mechanism shown in Fig. 2; c

Fig. 4 is a side View of the frame supporting mechanism resting on the ties;

Fig. 5 is an end view of the mechanism'sho in Fig. 4.

A particular use of this machine is in connection with the electric bonding of rail joints for track circuit purposes. Two generaltypes of 4Q bonds have come into use, one of which is applied through a hole drilled in the web of the rail forconductors passingaround the shplate, and the other is applied through a bottomed hole in the l head of the rail drilled close to thejoint. In the 4,51 former application the hole is vdrilled. completely the` machine is applied to the rail in its lowered position and the mechanism is adjusted tolocate the drill at right angles to the rail with the clamp arranged to engage the head of the rail opposite the drill. The machine is mounted upon flanged yrollers and it is substantially balanced on these rollers on one rail with the engine or motor on one side of the rail and the drilling mechanism on the opposite side so that it may be conveniently rolled along the rail from joint to joint by the operator.

When adapted for drilling the head of the rail, the machine is elevated relative to the railso as to bring the drill into position opposite the rail head. For this purpose the supporting rollers are each mounted upon an arm which is pivotally connected to the frame and each arm is provided with a gear quadrant engaging a worm. These worms `are mounted on a shaft which may be rotated in either direction by a ratchet mechanism to cause the arms to swing on their pivots and thereby raise or` lower the frame to the position desired. The drilling end of the machine is supported on the ties and a mechanism 'is providedfor lowering the tie engaging member as the machine frame is raised to maintain the drill spindle at right angles to the rail. This mechanism embodies a parallel motion and is operated by a screw to the position desired.

This machine corresponds in its general construction tothe machine shown in U. S. Patent 1,421,194 of June'27, 1922with added features which enhances its use and facilitates its operation.

'The general construction of the machine In Fig. 1, Il is the rail of the track, I2 is one end of thelmain frame I'I of the machine, I4 is one of the bars connected to themain frame I1 and supporting the pad I5 upon which the motor or gasoline engine 25, With the fuel `tanlr 26, is mounted. A corresponding bar is provided on the opposite side of the frame which does not show in Fig. 1. The frame is continued by a pair of members one of which is shown at I8, to which the gear case I9 is secured and the housing 20 for the operating spindle. An up-standing pipe frame 22 is also secured to the frame member I'I and supports the oil reservoir 23 which connects by pipe 24 with an orifice that lubricates the drill in operation. This pipe frame is used to stabilize the machine as it is rolled along the track.

4 By the shaft 21 the engine 25 drives the pulley 28, journaled in the bracket 2|, and by belt 29 and belt wheel 30 the power is transmitted to the gears in the gear box I9 and through these .gears to the operating spindle in housing 20, according to established practice in drilling machines which is not shown on the drawings. A depth gage 32 is provided for the drill 3i and the drill spindle is brought into position by the feed lever 34pivoted at 35 and connected by the link 33 with the spindle mechanism. This lever is normally retrieved by the spring 36 and is used to initially bring the drill into drilling position after which the drill is fed forward by the feed gear lever 31, engaging a rack at 38 for feeding the drill, as more particularly illustrated in U. S. Patent 1,421,194 above referred to. The machine is provided with a pair of handles at 39, at the spindle side and with a pair of handles shown at 40, on the engine side whereby it may be readily lifted from the track.

In order to support the machine horizontal when it is removed from the track a bail 4I is provided below the engine and pivotally mounted on shaft 42 so that it may be placed in the horizontal position to avoid objects on the track. The support for the mechanism on the ties comprises a foot 43 of sufficient length to bridge a pair of ties and which is` pivotally connected at 44 to the link 45 and through the connection 46 to the member 41 which forms 'a parallel motion and which pivotally connects this foot with the frame, its position relative to the frame being adjusted by the screw 48.

The frame is supported on the track by a flanged roller 5I, pivoted at 52 in the arm. 53, which is pivoted at 54 to the frame I1 at l2 and which has secured thereto the worm quadrant 55, engaged by the worm` 56 on shaft 51, supported by bracket 58, the vertical adjustment of' the machine being secured by the shaft 51 as hereinafter more particularly described.

The clamp 59, with the screw 60, engages the rail head when the machine is adjusted for drilling the head of the rail and G8 indicates a clamping member on the opposite side of the rail.

The elevating mechanism on the rail In Fig. 2, the roller 5I on rail Il is pivoted at 52 on the arm 53 which is pivoted at 54 to the frame I1 and which is provided with a quadrant 55, bolted to 53 at 6|. This quadrant is toothed to engage the worm 56 on shaft 51, mounted in the bearing bracket 58. A corresponding construction is provided for the opposite roller with the corresponding parts having the same reference numerals but designated by a prime mark. 'Ihev quadrant 55 is provided with an index 61 moving below a fixedpointer 66 by which the adjusted position can readily be ascertained. The

shaft 51 is rotated by the ratchet wheel 62, en-

gaged by the ratchet detent 63, controlled by the knurled nut 64 and operated by the handle 55 similar to a brace ratchet. The nut 64 may be adjusted to engage the ratchet for either direction of rotation. It will be noted that the worm threads of 56 and 55 are in opposite directions and that the arm 53 moves to the position indicated in dotted outline while the arm 53' moves in the opposite direction to the position indicated in dotted outline. This balances the forces acting on the worm 5E and 55 with the result that the ratchet may be operated to raise or lower the machine with comparatively little effort, also .the mechanism is self locking and does not tend to change the adjustment. It will be noted that as the rollers are spread apart the frame l1 is dropped closer to the rail and the mechanism is correspondingly lowered. From Fig. 3 it will be observed that the arm 53' is made in the form of a yoke with bearings on each side of the roller and of the frame.

Both rollers make the same angle with the vertical as they are simultaneously moved so that a uniform support is provided for the machine as its height is adjusted without straining or twisting the frame, and the frame is always parallel with the rail insuring alignment of the drill.

The elevating mechanism on the ties 'I'he bar or foot 43 rests across a pair of ties. It is pivotally mounted at 11 in the yoke 19 with a degree of lost motion indicated at 18 whereby it may adjust itself to uneven conditions in the ties. The H-shaped link 45 is pivoted at 44 to the yoke 19 and at 15 is pivoted to the spindle housing 2li, and the link 41 is pivoted at 16 to the housing 20.

These links are connected by the connection 46 which maintains them parallel to each other. Link 45 is pivotally connected at 14 to the screwsleeve 13 which receives the screw shaft 48 and the upper end of this shaft screws into sleeve 1| which pivotally connects at 12 with the housing It will be observed that as this screw is operated the foot 43 may be raised to the position indicated in dotted outline in Fig. 4 or may be stopped in any intermediate position and during this entire movement the yoke 19, supporting 43, is maintained horizontal. This yoke, Fig. 5, is

concaved at 69 to clear the lower part of the housing 20 as indicated in dotted outline in this gure, when the support is closed up against the spindle housing` This adjustment is made in cooperation with the adjustment of the rollers in Fig. 2 so as to locate the spindle substantially at right angles to the rail.

It is very desirable to drill the bottomed holes in the rail head as accurately as possible and to insure this result a steady support for the machine is necessary. The rail provides a steady support at one end, but the other end of the machine is supported on the wooden ties. To get a proper bearing for the support, the shoe is v provided with a flat face having considerable area in engagement with the ties and as the shoe is adjusted this flat face'is maintained parallel with the ties. The link connection between the shoe and the frame forms a truss connection which tends to neutralize vibration. If the machine is not maintained steady the drilled hole will not be truly cylindrical.

The refinements herein disclosed are of material importance in the operation and use of the machine and may be applied in a single machine in the combination shown or each featurel may be applied with other types of machine that will produce the samek results, which is the intent and purpose of the invention.

'Having thus described my invention, I claim:

l. A track drilling machine, comprising a frame with a drilling mechanism on the transverse centre of the frame for drilling the rail, said frame being supported at two spaced points on the rail and by the ties of the track, means for adjusting the height of the frame relative to the rail at said supporting points, a foot engaging the ties, a pair of links in line with the drilling mechanism pivotally connecting said foot with said frame, means maintaining said links in parallel relation to each other and means for Cil raising and lowering said foot relative to the frame. o

2. A track drilling machine, comprising a frame with a drilling mechanism on the transverse centre of the frame for drilling the rail, said frame being supported at two spaced points on the rail and by the ties of the track, means for adjusting the height of the frame relative to the rail at said supporting points, a foot having a face engaging the ties, a pair of links in line with the drilling mechanism pivotally connecting said foot with said frame, means for maintaining said links in parallel relation to each other to maintain said face parallel to the ties, a screw sleeve pivoted to one of said links, a second screw sleeve pivoted to said frame and a screw engaging said sleeves to raise and lower said foot relative to the frame.

3. A track drilling machine, comprising a frame with a drilling mechanism on the, transverse centre of the frame for drilling the rail, said frame being supported at two spaced points on the rail and by the ties of the track, means for adjusting the height of the frame relative to the rail at said supporting points, a foot engaging the ties, an H-shaped link in line with the drilling mechanism pivotally connecting said foot at its free ends to said frame, a screw sleeve pivoted to said link, a second screw sleeve pivoted to said frame and a screw engaging said sleeves to raise and lower said foot relative to the rail.

4. A track drilling machine, comprising a -frame vwith a drilling mechanism on the transverse centre of the frame for drilling the rail, said frame being supported at two spaced points on the rail and by the ties of the track, means for adjusting the height of the frame relative to the rail at said supporting points, a foot arranged to engage a pair of ties, a link in line with the drilling mechanism pivotally connected to the frame at one end, a yoke pivotally connected to the opposite end of the link, said foot pivotally connected to said yoke with a limited pivotal motion with the pivot parallel to the axial line of the drill and means for moving said link on its pivots to adjust the support of said frame.

5. A track drilling machine, comprising a frame with a drilling mechanism on the transverse centre of the frame for drilling the rail, said frame being supported at two spaced points on the rail and by the ties of the track, means for adjusting the height of the frame relative to the rail at said supporting points, a foot engaging the ties, a link in line with the drilling mechanism pivotally connected to straddle said frame and capable of moving on its pivot parallel with the frame, a yoke pivotally connected to the opposite end of the link, said yoke being concaved on its upper side to clear said frame when the link is raised, a foot pivotally connected to said yoke and means for moving said link on its pivots to adjust the support of said frame..

6. A track drilling machine comprising a frame mounted on a rail of the track with a drilling mechanism on the transverse centre of the frame having aspindle for drilling the track rail, said drilling mechanism overhanging the rail and a support resting on the ties of the track for said mechanism, comprising a foot resting on the ties,

parallel links connecting said foot with the'drilling mechanism and a screw engaging said frame and said links for adjusting the position of said foot.

'7. A track drilling machine comprising a frame mounted on a rail of Athe track with a drilling mechanism on the transverse centre of the frame having a spindle for drilling the track rail, said drilling mechanism overhanging the rail and a Asupport resting on the ties of the track for said mechanism, said support comprising a foot to rest upon the ties, a yoke, a universal connection between said yoke and said foot, parallel links connecting said yoke with said drilling mechanism and means for moving said links to adjust the position of said foot. Y

8. A ytrack drilling machine as in claim '7 in which a pivotal connection is provided `between centre pivotally connected to said foot, parallel links connecting said yoke to said drilling mechanism, said depressed centre registering with the housing of said drilling mechanism and means for folding said links to bring said yoke against said mechanism.

EDWARD A. EVERE'I'I.