US1772636A - Rail-grinding machine - Google Patents

Description

Aug. 12, 1930. #5 QUA ET AL 1 772,636

RAIL GRINbING MACHINE Filed Nov. 15, 1926' 4 Shegts-Sheet I Aug. 12, 1930. F, L, RE UA ET AL 1,772,636

I RAIL GRINDING MACHINE IIIIIA'IIIIIIIIII IIIIII'IIJIIIII 4 Sheets-Sheet 3 Aug. 12, 1930'. F. L. RE QUA E AL RAIL GRINDING MACHINE Ffiled Nov. 15, 1926 v mf I TTORIEYS IN YEN TIJRS ream-ma. 1 z: awq

MN IN/01%? Aug. 12, 1930. F -RE UAEML I 1,772,636,

RAIL GRINDING MACHINE.

Filed Now-15, 1926 4 Sheets-Sheet 4 y 7 IIIIIIIII// I Igxgl 143 as J: 40 43 6 INVEIl-TUILS I trio/inns PatentedAug. 12, 1930 UNITED STATES PATENT OFFICE I I I ION S. KALENBORN F REDWOOD BEDERICK L. RE QUA OF SAN FRANCISCO, AND AR F CITY CALIFORNIA, ASSIGNOR '10 WELDING SERVICE INC, OF SAN FRANCISCO,

CALIFORNIA, A CORPORATION OF CALIFORNIA BAIL-GRINDING MACHINE Application filed November 15, 1926. Serial No. 148,449.

' I I v to ma- This inventlon relates generally chines for surfacing or grindlng rails of ra lt cks. T he Zlectrical arc method of welding rails has now come into general use .on both electrical and steam railroads.

weld however leaves a roughened surface,-

r us necessitating the use of suitable ap aiiitus for resurfacing the rails. 'For t is N purpose it has been proposed to employ a portable grinding machlne mounted upon a truck. These machines generally comprise a single grinding wheel ad1ustab y p upon the truck and driven by an e ectr c mo}; tor through a universal connection. Suc

machines have not been sat sfactory becauge of the inadequacy of the grinding wheel a I 1e ts and because the use of a sing v i iiid i ii g wheel necessitates bodily turning he truck around before the other rail can be round. Furthermore, the drive connect on etweenth'e motor and wheel make such machines complicated and expensive to manufacture.

It an ob'ect of this invention to devise a rail grindiiig machine which need not be.

(1 from the track to grind both rails.

l t i s a further object of th1s mvent1on to generally improve upon the adyustments for controlling the grinding wheel of a rail grinding ,machine, thereby, ncreaslng its operating efliciency.

other 0b v deg'isd a iiovel forn i of drive for the grindingwheels of a rail surfacing machinewh ch will incorporate "a motor having a grinding wheel mounted directly upon each end of its F lii'therobjects of-this invention will appear from the following descript on in whlch wehave set forth the preferred embodiment of our invention. It is to be understood that the invention is to be accorded a range of mechanical and electrical equivalents consistent with the state of the prior art.

Referringto the drawings: 1 Figure 1 is aplan View of a rail grlndlng machine incorporating the principles of this invention.

An electrical the line 4-4 of Fig. 3.

the construction of one o mounted ect of this invention to Fig. 2 is a transverse cross sectional view of the locking mechanism for the shiftable" m'otor carriage. Flg. t 1s a cross sectional Fi 5 is a cross sectionalview taken along the hue 5-5 of Fig. 1

Fig. 6 is across sectional detail view taken alongthe line 6-6 of Fi 1 and showing %the roller bearin s for the shiftable motor carriage.

ig. 7 is a cross sectional view taken along the line-7-7 of Fig. 6.

Fig. Sis a cross sectional detail illustrating the construction of the adjustable mounting of the motor upon the motor carriage.

F i 9 is a cross sectional detail taken along the line 9-9 of Fig. 8.

Fig. 10 is a cross sectional detail taken along the line 10-10of Fig. 1, I

' Fig. 11 is a cross sectional view taken along the line 1-1-11 of Fig. 5.

The invention comprises generally a wheeled frame or truck which is adapted to support a grinder motor in such a manner that themotor maybe shifted bodily transversely of the frame. The motor is provided with a double ended shaft and a grinder wheel is directly mounted upon each end so that by shifting the motorone wheel may be made to operate upon one rail and upon shiftable in a vertical direction by providing anadjustable mounting-for the motor, upon the shiftable carriage. This latter adjustment 'is preferably provided with a manual control designated so that the position of the grinding wheels with respect to the rails of a track maybe adjusted from eitherside of the machine. To facilitate accurate positioning of the grinder wheels the shiftable carriage is preferably mounted upon rollers soas to move with substantiallv no friction- 'Alock view taken along L ing device is provided for fixing the carriage with respect to the frame when it is desired to remove the machine from the track.

The specific embodiment of the invention which we have illustrated in the drawing comprises a frame 10 supported by means of wheels 11', the wheels being adapted to fit that'gauge of track with which the machine is intended to operate. The frame has been shown as consisting of a pair of end members 12 connected together at their ends by a pair of arched side members 13. The end tudinalmembers 17 interconnected by a pair of transverse brace members 18.

r The ends of the longitudinal carriage members 17 are adapted to engage and track upon the frame members 12 and are preferably provided with roller bearings to reduce friction to a minimum. Thus-referring to Figs. 6 and 7, each end of the longitudinal carriage members 17 is shown as provided with an extension 20 adapted to overlie a frame member 12. A roller bearing is mounted upon this extension 20, the bearing in this instance comprising a roller shell 21 positioned upon the axle 22, rollers 23 being interposed between the shell 21 and the axle. The inner side of the frame members 12 are also engaged by rollers, the roller assemblies in this instance however being adjustable to permit taking up side play in the carriage. One of these roller assemblies is shown in Fig. 10 and comprises a roller shell 25 disosed upon a suitable shaft 26, rollers 27 bemg interposed between the shell and shaft. For securing adjustment of the roller, shaft 26 extends eccentrically from one end of a cylindrical block 28, this block being seated within oneof the longitudinal carriage members 17 Block 28 may be locked in any desired adjusted position by means of a wedgeshaped locking pin or bolt '29, one end of this bolt being threaded to receive a nut 30 for jaming the bolt into engagement with block 28.

The bottom sides of the frame members 12 are also preferably engaged by rollers mounted upon the transverse carriage members 17. In this instance the rollers are likewise adjustable and, as shown in Fig. 11, comprise a roller shell 32 disposed upon a shaft 33, this shaft extending eccentrically from the cylindrical block 34. Rollers 35 are interposed between the roller shell 32 and the shaft 33.

The cylindrical block 34 is adj ustably'locked in position by means of locking pin or bolt 36. I or adjustably mounting the motor to the shiftable carriage there is provided a pair of duplicate devices engaging the ends of the motor housing and which in operation are operated simultaneously. Each of these devices preferably comprises a vertically disposed screw 38 threaded within a nut 39 which is seated in one of the longitudinal carriage members 17. Upon the lower end of the screw. 38 suitable means is provided for attachment to the motor housing. For-exam.-

ple, there is shown a V-block 40 adapted to engage an end portion 41 of the motor housing, this V-block being secured to the screw 38 by means of a-suitable thrust bearing assembly 42. The U-shaped bolts 43 serve to clamp the motor housing portion 41 up against the \V-block 40. The upper endof the screw 38 is provided with a non-circular portion 44 to which isfixed a hand wheel 46 or other suitable manual control means.

In order to rotate the screws 38 in synchronism and thus maintain the motor shaft horizontal at all times, there is provided a positive drive connection between the two screws. This drive connection has been shown as comprising a pair of sprockets 48 fixed to the screws 38 and about which is entrained the sprocket chain 49. Thus by rotation of either of the hand wheels 46 both screws 38 are ro tated to raise or lower the motor relative to the carriage. In order to brace the screws 38 against tension exerted by the sprocket chain 49 there is provided an intermediate bar 50 having its ends suitably journaled upon the' ate within vertical slides. Thus each of the longitudinal carriage members 17 is provided with a pair of spaced guide members which have tongues 56 adapted to engage within' slots 57 provided upon opposite'sides of each of the .V-blocks40.

As previously explained, the two grinder wheels are employed and these wheels are mounted directly upon the motor shaft. Thus the motorshaft 60 is extended at both ends and directly secured thereto are the grinder wheels 61. The upper portion of each wheel is preferably inclosed by a suitable guard 62 mounted upon the extended housing portion 41 and carrying a suitable hand hold 63. Be-

.the rails.

, With devices of this kind it is frequently necessary to remove the machine from the track. For this purpose the carriage-is provided with a pair of spaced hars extending through lugs 66 provided upon the transverse carriage members 18. In order to lock" the carriage with respect to the frame while the machine is being moved, there is provided a pair of locking levers 67 pivotally secured to one of the frame bars 12 as'by means of the pivot pin 68. These leverscarry fingers 69, which when the levers are turned to the dotted line position shown in Fig. 4, extend adjacent opposite sides of one ofthe extensions 20. For retaining the levers in either looking or an out-of-the-way position they are longitudinally slidable upon the pin.

68 and are provided with inner cam faces 70 engaging the ends of pin 71. Springs 72 serve to urge the levers in a direction to engage the cam faces 7 O with the relatively stationary pin 71,-these cam faces serving to retain the leversin either one of the two positions.

In. operating this machine, after a weld has been made upon one or both of the rails, the machine is arranged so that two of the wheels 11 straddle one of the welded spots. The operator the grasps the nearest hand wheel 46 and the corresponding hand hold63, and by rotation of the hand wheel raises or lowers the motor shaft'; un ti l the adjacgt transversely of said frame.

2. A- rail grinder comprising .a wheeled ily shifting the motor frame adapted to operate upon a railed track,

a motor mounted transversely of said frame, said motor having a shaft extending from both ends of the same, a grinding wheel mounted upon each end of said shaft, means for bodilyshifting said motor transversely of said frame, and means for vertically adjusting the position of said motor with re spect to said track.

3. A rail grinder comprisinga wheeled frame adapted to engage a railed track, a transversely shiftable carriage mounted upon saidframe, a motor mounted upon said carriage, means for vertically adjusting the motor with respect to the frame, said motor,

having a shaft arranged transversely of the frame, and a grinding wheel mounted direct ly upon said shaft.

4. A rail grinder comprising a wheeled I frame adapted to engage a track,a' carriage mounted upon said frame and adapted to be shifted transversely of the same, a motor mounted upon the underside of said carriage, said motor having a shaft extending transversely of the frame and extended at both ends of the motor, a grinding wheel mounted directly upon each extended end of the shaft, and means for bodily adjusting the vertical positionof the motor while maintaining the transverse relationship of the shaft.

5. A rail grinder comprising a wheeled frame adapted to engage a track, a carriage mounted upon said frame and adapted to be shifted transversely of the same. a motor grind wheel ot'ope'fats 115011 the surface offiuounted up e nders deo said carriage,

the rail. By rolling the machine along the track the grind wheel may be m oved longitudinally of the rails and by shifting the carriage the wheel may be moved transversely ofthe rails. By manipulation of thehand wheel. 46 the sides of the rail may also be ground against the? faces of the grinding wheel. When one rail has been finished it is only necessary for the operator to move about to the other side of the machine and then grind the other rail with the other wheel.

The freely shiftable carriage: and the roller mounting for the same makes possible coniplet'e' oontrol' over movement of the grinding wheel and thus an operatorcan complete a given number of grinding operations. in ,a

. minimum of time.

We claim:'

1 A rail grindercomprising. a wheeled frame adapted to operate upon a railed track, a motor mounted transversely of said frame, said motor having a shaft extending from both ends of the same, a grinding wheel mounted upon each end of said shaft, the distance between the centers of said grinding wheels being substantially different than the gauge of said track, and means for bodbodily adjusting the vertical position of the motor,

6. A rail grinder comprising'a wheeled frame, a carriage mounted upon said frame,-

said carriage being sliiftable transversely of the frame, a motor having a shaft extending from both ends of the same, a grinding wheel mounteddirectly upon each extension of the shaft, a separate adjustable mounting for securing each end of the motor to the underside of the carriage, and means for effecting simultaneous adjustment of said mountings. 7. A rall grinder comprising a wheeled frame, a carriage mounted upon said frame,

said carriage being shiftable transversely of .the frame, a motor having a shaft extending from both ends of the same. a grinding wheel mounted directly upon each extension of the shaft, a separate adjustable mounting-for securing each end-of the motor to the underside of. the carriage, a separate manual conupon each end of said shaft, the distance between the centers of said wheels bein substantially different from the gauge 0 said wheeled frame, and means'for operably adjusting the motor and grind wheels in a vertical direction relative to the rails of a track to be ground.

9. A rail rinder comprising a wheeled frame adapte to operate upon a railed track,

a transversely shiftable carriage mounted upon said frame, means. engageable by an operator from either sideof said frame for shifting said carriageda motor carried by said carriage, a pair of grind wheels carried by said carr1age,sa1d grind wheels being arranged one ad acent each side of the carriage, means forming a driving connection between saidmotor and both said grind wheels, said 80 rind wheels being shiftable-laterally of the tically adjustin each .grind wheel with rerame with said carriage, and means for verspect to the trac 10. A rail grinder comprising a wheeled frame adapted to operate upon a railed track, a horizontal transverse drive shaft, a trans.- versely shiftable carriage supporting said drive shaft upon said frame, means for effecting vertical adjustment of said shaft,

said means serving to retain said shaft in substantially horizontal position, a grind wheel mounted upon each end of said shaft,

one grind wheel serving to effect grinding operation upon one side of the machine and the other grind wheel serving to effect grindmg operatious upon the other side of the track, a motor supported b said frame, a pair of grind wheels carrie by and located adjacent either-side of said frame, means for connecting both said grind wheels to said motor, means for simultaneously shifting both said grind wheels laterally of said track,

and means for vertically adjusting each grind wheel with respect to the track.

In testimony whereof, we have hereunto 7 set our hands.

FREDERICK L. RE QUA. ARION S. KALENBORN.

' machine, and motive means for driving said 7 shaft. a

11. A rail grinder comprising a wheeled frame adapted to operate upon a railed track, a carriage mounted upon said frame, said carriage being freely shiftable transversely of the frame responsive to direct manual thrust applied to the carriage, a pair of grind,

wheels'supported by said carriage adjacent either side of the same, and means for effecting vertical adjustment of said grind wheels, said means including a pair of manu'al control members carried by said carriage and adjacent either side of the same, whereby an operator can laterally and vertically adjust 'a grind wheel by actuating one of said control members.

12. A rail grinder comprising a wheeled frame adapted to operate upon a railed

Images