US1035131A - Grinding-machine. - Google Patents

Description

H. B. NICHOLS.

GRINDING MACHINE. APPLICATION FILED DEO.22. 1M0. RENEWED APR.

20, 1912. Patented Aug. 6, 1912.

HE T

n. B. NICHOLS. GRINDING MACHINE. APPLICATION FILED 13110.22, 1010. RENEWED APR. 20, 1912.

1,035,131 atented Aug. 6,1912

' SHEETS-SHEET 2.

H. B. NICHOLS. GRINDING MACHINE. APPLIOATION FILED 13120.22, 1.910. RENEWED APB. 20, 1912. 1 935,1 31 Patented Aug. 6, 1912.

7 SHEETS-8HEBT 3.

H. B. NICHOLS. GRINDING MACHINE. APPLICATION FILED 1120.22, 1910. nmuzwnn M11. 20, 1912.

Patented Aug. 6, 1912.

'( SHEETS-SHEET 4.

Wnasas:

H.'B. NICHOLS. GRINDING MACHINE. APPLICATION FILED DBO. 22,1910. RENEWED'APR. 20, 1912. 1,035,131 Patented Aug. 6, 1912.

7 SHEETSSHEET 5 H. B. NICHOLS. GRINDING MACHINE.

I APPLICATION FILED DEC. 22. 1910. RENEWED APR. 20. 1912.

1, Patented Aug. 6, 19 12.

H. B. NICHOLS.

GRINDING MAGHINE. APPLICATION FILED 1120.22, 1910. nmwnwnn APR. 20, 1912.

1,035,131. Patented Aug. 6,1912.

7 BHEETB-SHEET 7.

UNITED sTATEs PATENT OFFICE.

HENRY B. NICE OLS, 0F PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WILLIAM I).

' GHERKY,

0F PHILADELPHIA, PENNSYLVANIA.

GRINDING-MACHINE.

Application filed December 22, 1910,

To-all whom it my cousin:

Be it known that I, HENRY B. NICHOLS, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and Grinding-Machines, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to grinding machines and particularly to such machines as are used for grinding railway rails in place, and constitutes in effect an improvement over the machines for which Letters Patent of the United States were granted to me December 21, 1909, No. 944,147. The machine described in said Letters Patent comprises a truckframe carrying a motor and a reciprocating grinder driven by the motor throughthe medium of a cam drum and connecting rod. The grinding is accom plished by means of bricks set in a selfweighted holder, having vertical motion in slides on a carriage fitted for horizontal motion in the'truck frame.

In the present case I shall describe and claim a'machine of the same general type as that in the aforesaid Letters Patent, but differing therefrom in a number of important points.

It comprises a wheels, flanged to run upon railway rail, and serving to aline the truck frame thereovcr, one or both adjustable laterally, for curves, a motor mounted on the frame, a jack shaft carrying a cam-drum and geared to the motor, areciprocating carriage traveling on longitudinal slides in the frame and having a brick holder traveling on vertical slides in the carriage, a connecting rod with a pair of. posts carrying truck frame having tandem the ordinary friction rollers engaging the, opposite sides of the rib or cam on the drum, means for raising and lowering the brick holder in the carriage, a track brake for anchoring the entire machine on the rails while grinding, and a pair of auxiliary wheels with means for raising and lowering the entire machine so that in a very few s'ed'ohds its weightijmay be transferred from the tandem wheels to the auxiliary wheels, which Specification of Letters Patent.

Serial No. 598,840. Renewed April 20, 1912. Serial No. 692,211.

useful Improvements 1n Patented Aug. 6, 1912.

yare made with plain rims so as torun upon gordinary street paving, the flanged wheels ,being at the same time removed from the irails, and the machine thereby rendered free for progress. in any desired direction. The fimportance of this last feature will be appreciated when it is reflected that the ordinary city schedule on a business street calls for the passage of cars at intervals of about two minutes, and that the intervals in night schedules are rarely more than fifteen minutes. Moreover it is on the busy lines that this machine is most needed, hence it is highly important that it should be made sufficiently mobile so that it may be quickly removed from the track to kpermit the passage of a car and as quic yreplaced for the immediate resumption of grinding during the brief interval before the next car may be expected.

My invention is panying drawings in which- Figures 1 and 1 taken together constitute a side elevation of the complete machine. Figs. 2 and 2" taken together constitute a plan view. Figs. 3 and 4 are opposite end views' of the complete machine. Fig. 5 is a section on the line 5-5 of Fig. 1, and Fig. 6 is a section on the line 6-6 of Fig. 1*, in bothcases looking in the direction of the arrow heads.

Referring to the drawings, in the present case as in my patented machine above re- ,ferred to, I employ a truck frame 1, 2, 3, 4, with tandem wheels 5 and 6, journaled be tween the ends of the side members 12. These tandem wheels are flanged to run upon the ordinary railway rail, and serve to aline the entire machine over the rail while it is being ground. The method of mounting these wheels involves some points of novelty as follows: On the inner face of each of the side channels 1 and 2, I'bolt a base plate 7 carrying a projecting journal box 8, which may be merely a closed collar receiving the end of the stub axle, or a through-bolt extending through the steel hub and both bearings, and constituting a fixed axle for the wheel. In either case, the wheel has a hub projecting on opposite sides from its web as indicated at 9-10.

illustrated in the accom- The projection 9 is long enough to engage the outer face of the bearing box 8 when the wheel is centered. The projection however is cut off shorter, so as to, leave the These may be constructed in any suitable I manner, but as I have employedt'hem, they are simply disks of metal,--each having a sible of claimed an gaming in rigidit slot cut'from one edge into the cent-er of a Width suflioient' to fit overv the axle or through-bolt.' l/Vhen it is desired to make lateral-adjustment of the wheel, as for eX 15 ample in grinding aroundflcurves, one of these spacers or distance blocks is lifted off, the wheel and the other spacer pushed over, and the detached spacer dropped into the then open space 13 between the hub 9' and the box 8. Stillgreater displacement of the wheel can besecu-red by shifting both the sp acers'fmmcne side to the other, and: if more then two-are employed, by shifting any desired number of them. While I have shown these spacers as of considerable thickness, it is quiteevident that ifdesired they can be replaced by a number ofthinner rings, even'sheet metal punchings being posemployment where very fine adjustments of the Wheel are desired for any reason.

In my patent above referred to, the tande 'n wheels Were-mounted within the length of the fra1 ne," with an overhang at one or both ends. In fact, I therein described and extension of the frame forming guides for the grinding element. In the present case itwill be observed I journal the wheels in the extreme ends outside of everything else. By so doing I gain several advantages. In the first place the alinement is "better, in the second place'resistance to lateral displacement by any force exerted between the Wheels on the frame, is increased, in the third place the side channels 1 and 2 are made perfectly straight thereby and are brought closer to the. track throughout, and finally the Wheels themselves and the bearings are rendered accessible for replacement, when required.

The side members are. connected by-the.

end channels 3 and 4, secured in position by angle brackets riveted in place as usual. Intermediate of'these end pieces, the frame is connected at several other points by bridges carrying the motor, the bearings for the cam shaft and the axle of the side Wheels. These are designated as 14, 15, 16

and 17 respectively. These bridges all tend to stiffen the frame, beside-subserving' their several individual functions. In proximity to the wheel 5, the upper and lower flanges of each of the side members with smooth- slides 18 and 19, upon which bridges 15 and 16, and which ball bearings.

heavy pressure upon the bricks 45 as they rest- -der to raise it out of adjustment, repairs and thereon, and when the bail is thrown over so that the block will be held are provided 1 rest the guides20, 21, 22, 23, 24, 25 and two others not shown, attached to the carriage 26, which forms the reciprocating element of the machine and has at one end a pair'of' cars 27 to receive the pivotal end 28 of the connecting rod 29, which is journaled to reciprocate in bearings 30 and 31'benea-t-h the carries a pair of's'tuds carrying vertical friction rollers 32 and 33 engaging opposite sides of the male cam rib 34 on the cam drum 35 which is car .ried on a rotary spindle journaled in bearings 36 and 37- caston the bridges 16 and 15 respectively, these bearings being preferably On the end of the cam spin: dle or shaft is secured a gear wheel 38, meshing with a pinion 39 preferably of raw hide to reduce the noise of operation as much as possible. This pinion is secured on the shaft 40 of the motor 41, bolted to the cast box. or bridge 14, which in turn is bolted by means of lugs 14 and 14 14 and.

14 to the top flanges of the side channels 2 and '1.

Returning to the reciprocating-carriage 26, this is fitted with vertical end slides 42 and 43, which enter guide slots formed vertically in the ends of aheavy block or brick holder 44. 'This block is an iron casting and is purposely made massive so as to exert in operation. It is free to slide up and down in the carriage, its'weight being normally supported entirely on the grinding upon the rail. In orengagement with the rail when the machine is to be moved or for, purposes of inspection, provided with trunnions 46 and 47, upon which are pivoted a pair of cams 48 and 49, secured to and operated by a pair of con-' nected levers 50 and 51, whose return bar or handle 52 constitutes in effect a bail which normally lies flat as shown in Fig. 1*, across the top of the end piece 3 of the frame, Where it is entirely out of the Way; On lifting up the ba-il however, the cams 48 and 49 are turned upon the trunnions 46 and 47, and lift the block 44 together with the grinding bricks and other attachments past center, the cam rests on its reverse face,

up automatically as long as desired.

The block 44 is castwith a rectangular opening extending through it from top to bottom, and an enlarged opening or a longitudinally pivoted swinging brass box congrinding surface the brick holder is taining openings extending into it from beneath for the reception of 'the grinding bricks 45. These bricks are spaced apart by shims or distance pieces 53, are adjustable by and receive pressure through Wing bolts 54 threaded into bridges 55; and they are all looked into position When adiusted bv' I f means of a movable wedge 56 cooperating with a fixed'wedge 57, between the end brick and the inner face of'the end of the holder, the movable wedge .being forced down into locking position by the liolt 57 having a T-handle 58 and lock-nut 59.

The motor 11 is of the inclosed type, and is supplied with current through flexible conductors which may conveniently be brought into connection with a trolley wire by means of a blind pole or the like. The motor controller and switch may conveniently be housed within the box or bridge 14 but as it forms no direct part of the present invention 1 have not deemed it necessary to illustrate it.

1V hile the machine is in operation, it is sometimes desirable to anchor the truck upon the rails, for which purpose I provide the track brake 59. This brake is supported on a vertical stem 60, sliding in central bearings 61 in a bridge 62 extending across and bolted to the side members 1 and 2. Across transversely from side to side of the frame is a brake shaft 63, carrying a shortcrank arm 64 pivotally secured to the top of the brake step 60. On its projecting end outside the frame, the shaft 63 carries a lever 66 by means of which the brake can be controlled, and a ratchet and paw16'6 and 67 for holding the same set during grinding when desired.

The brass box or frame containing the bricks is indicated at 161 in Fig. 1, and is pivoted on massive trunnions shown at 162 and 163 in Fig. 2, in hearings in the block 44. It is canted for oblique grinding, by means of the two nuts 164 and 165 threaded on a bolt 166 passing through the bosses 167 and 168. The bricks can thus be set at any angle, as the frame is rocked on its trunnions. This canting mechanism, is not however, claimed in this application, being made the subject of a divisional application, Serial No. 668,322} filed December .28, 1911.

It remains to describe the means for removing my machine from the track and for transporting it from place to place. These 50 means are the large wheel 68. and 69, constructed of wood by preference, and journaled on opposite ends of the bent axle 17 (Fig. 4:). The construction and arrangement of this axle and its coiiperating parts constitute an. important feature of my invention. The axle itself may be a steel forging casting or in one piece, or it may be made with the central bridge 17 and the two end members or spindles (which in effect they are), separate pieces bolted together. The spindles receive not only thchubs 70 and 71 of the wheels 68 and 69, butalso the bearing ends of a pair of links 72 and 73, which at their opposite ends have 65 eves through which pass the opposite ends of a transverse shaft 74 journaled in bearings in two upright channels 75 and 76, which are riveted to the side members 1 and 2 of the frame and supported by opposite diagonal braces 77, 78, 79 and 80. At one end, 81, the shaft 74 is squared to reccive the crank 83, and may be so squared also at the other end 82, as shown in Figs. 2 and 3. Near the end 81. a pinion 84: is rigidly secured upon the shaft, outside of the vertical post 76, and inside of said post it carries a pair of ratchet wheels 85 and 86 with oppositely inclined teeth, adapted to be engaged alternately by one orthe other edge of a double nosed pawl 87 pivoted at 88 on thepost 76, so that it can be swung either way. This ratchet and pawl mechanism enables the shaft 74 to be locked against rotation in either direction at will, for a purpose to be presently described.

The pinion 84 meshes with the teeth 89 of an arc-shaped rack on the heavy cast seg-' ment 90. This segment-has a pair of radial arms 91 and 92 converging to an integral hub 93 journaled on one end of .the axle 17. between the frame and the link 73. It will be observed that the toothed segment 90 and'the wheels 68 and 69 have a common axis which by means of the links 72, 73 is always maintained at the same fixed distance from and in parallelism with the shaft 74. r

Mounted longitudinally above the-frame of the machine is the heavy flanged jack lever 94, formed in V shape, with its pointed 100 end bolted to a projeeting'fiange 95 on the arm 91, and with its divergent ends or legs 96 and 97 extendingmcross and bolted to the upper or bridge portion of the axle 17, as indicated at 98 and 99 in Figs. 1 and 2. 105 Each end is bifurcated and provided with bearings 100 for gudgeons 1.01 on the swivelheads 102 and 103, carrying eye-bolts 10-l and 105, from which depend the chains 106 and 107. At their lower ends these chains 110 carry clevises 10S and 109, by which they are attached to cars 1.10 and 111 on the side members 1 and 2 of the frame. The car shows in Fig. 4, and the car 111 in Fig. 1, but in the other figures one or both of these 1 5 are partly obscured by other portions of the mechanism. The bent axle 17 is'bcst shown in Fig. and in said figure it will be observed that the two right angle members 17 and 17" have formed upon them extended flanges 17 and 17, the latter appearing in side elevation in Fig. 1, and both llullgis (.l plates appearing in plan in Fig. ltivclcil to these two plates are curved and flanged bearing shoes-1T- and 17, which ('oiipcrntc under certain conditions'with the lateral projecting studs 112 and 113, secured on base plates bolted to the side channels 1 and ,2, To prevent undue frictionbctwcen tically adjusted so that all 'even contacts with' the wedge 56 is loose, are locked by turning of the holder 44 resting upon them. As the throwing over the 17 strike their studs will be superimposed on the frame oft-he. 6O

.20, 21, 22 and 23 working i sistance of thetrack brake, I have found v1 and 2, it being that the the ends of the shoes 17* each shoe and its stud, I use loose collars or friction rollers 114, only one, of which is shown, in Fig. 4. H

The operation of my'machine thus de scribed is as follows:

(1.) For normal grinding on a straight rail, the machine stands as shown in Figs. specially noted however are 90 by which the lifting jack is worked should be in a' reversed'position, that is tosay in such position that the chains 106 and 107 will be slack enoughto permit the full weight. of the machine to'rest upon the flanged track wheel'sj5' and 6 and the auxiliary wheels will'be lifted clear of the pavement. The brake 59 .is set. firmly against the track rail by lifting up on the lever 65. Thebricks 45,- having been vermake fair and the vrailj surface while the T-handle-58. The; motor 41 being then 38 and 39, and theshaft 29 is reciprocated' by the continuous travel of the friction rollers On their studs, 32 and 33, on opposite. surfaces of the cam rib 34. The reciprocation of the shaft 29 produces a correspondingmoveinent of the carriage 26, and thereby of the entire grinding element, the slides back and v forth on the ways 18 and 19, and the bricks rub hing over the surface ofthe' rail underpressure due 'totheir own weight and theweight frictionbet-Ween the bricks and the railtends to more the machine even agalnst the relt advantageous to increase the total inertia by adding thewcight of the wheels 68 and (if) to that of the body of the machine, pivoted pawl 87 to en gage the ratchet S5, and then turning the. crank 83. in a clockwise direction to throw. up the segment 90 until the shoes 17 and 112 and.,l13, after which continued turning of the crank will lift. the axle and the wheels on the studs as fulcra, the axle being ronstrained by the links 72 and 73 to rotate upwardly around the shaft- 74, and the shoes l'l' and 1T slid- .ing on the studs. Thus, with the are 90 raised into'its uppermost positionyso that its lower end isin proximity'to the gear 84, and 17 will rest while the weight of'tlge and all the connected pants,

upon the studs, wheels, the axle,

truck through the media of studs 112 and 13 and posts. 75 and 76. The forked ends of the jack lever are lowered inteproximity with the frame members 1 and 2, and the chains 106 and-1.07 hang down in slack loops. To maintain the equilibrium 'o'f'th-e machine ets 151 maintain .When in use.

'- le ei sed (the crank '83 so doing),

ter which continued rotation, of

the shoes 17 and elevates the forked Ver 94until the chains 106 and 107 are taut including the Fig. 'l and the entire that disclosed-in my Patent No. 944,147,

hereinbefore referred to. in full in the present drawings, as its construction. and mode of operation will be fully understood after-reading the patent, but in Figs. 2?, 2 3 and 4 I have shown This is not shown the ends. of the" outrigger frame at 150,

bolted "to short projecting channels 151 secured to the side channel 1 of the truck. The outrigger may packingor storing, while the channel soekit in proper alinement (2.) When about to remove the machine thus be detached. for.

fromthe track, the brick holder 44 is raised on its slides .in the carriage 26 by throwing up the ba-il -52 and thereby turning down the cams 48 and 49.

For removing the ma'clnne from the track, or for transporting it fro-m place toplace, the brake is released, the pawl 87 is being firmly held in and the crank handle rotated in a counter-cloclhvise direction. This lowers the are-90 andtherefore'the axle 1i until thewheels 68 and (39 strike the ground, af the crank handle and falling'of the segment 90 raises and 17 clear of their studs,

and'flift the-'weight'of theentire machine,

outrigger, transferring it through the lever 94 to the axle 17 and the large. wheels 68' and .69.-

This condition is reached with the segment 90in substantially the position shown in device becomes in effect a two-wheeled loaded tllil'li with handle bars 152 and 153 at its opposite ends, for moving it in vany direction desired. As already stated, .1 preferably throw up the bail 52 and lift the bricks and their holder out of their grinding position when about to more the machine.-

For grinding curves, the machine is placedin position the same as for straight rail grinding, but the wheels 5 and 6 may lie-shifted by removing the spacing rings 11 and 12 and replacing them on the opposite sides ofthe hubs. lVhen suspended on 1 wheels 68-69 for transportation, the cheek large side wheels, and the balanced sus-- pension of the machine therefrom during transportation. It is necessary in practice. that the wheels used for transportation should hsve a diameter mu h greater than ends of the. jack le from the rails,

I stacles or depressions.

' that of the ordinary track wheels for the 'reason that the weight'of the machine would render it impossible to carry it on small wheels over the inequalities in ordinary pavement orroadway surface ,without the expenditure of a 'ver; large amount of power and the practica certainty. of wrecking the machine. Y'The balanced suspension, which is attainedin the present case by the use ofchains secured to properly located eye-bolts on the frame, is alsorneeessary, because without this some othermeans would have to be provided for supporting a portion of the weight in transportation. For example, if a rigid support were employed by means of levers or the like, the center of gravity would shift out of the line of support with every change in the inclination of travel, not only in ascending or descending grades, but in passing over slight ob- Consequeiitly the support would never be perfect and com- -.plete, and the difliculties met would be fully as greatas those flowing from the use of small wheels. It will he observed that with the flexible suspension herein described, a

- perfect balance and complete. support are always obtained during transportation regardless of changes in grade or directions in travel, the weight of the machine ad usting itself fore and aft with respect to the axle, and undue strains being prevented by the lateral bearing faees'on the frame and the cooperating projections on the axle. By the flexible suspension the present machine is very easily adjusted on the track rails when it is lowered for grinding.

Having thus described my invention what I claim and desire to secure by Letters Patent is: V

1. A rail grinding machine comprising a truck frame, a grinding element, flanged wheels on the frame adapted to support the same over tlierail to be ground, auxiliary wheels, lioisting means for vertically shifting the weight of the'n achine from the flanged wheels to the auxiliary wheels while -the latter remains stationary, means for applying power in multipl ed ratio to saidhoisting means, and means for maintaining the weight in its shifted relation.

2. A rail grinding machine comprising a truck frame, a grinding element, flanged wheels on the frame adapted to support the same over the rail to be ground, auxiliary wheels, hoisting means for vertically shifting theweight of the machine fromthe flanged wheels to the auxiliary wheels while the latter remains stationary, multiplying gears adapted to apply power in an increased ratio to said hoistingmeans, and a locking device to prevent retrograde movement thereof.

3.'A rail grinding machine comprising a truck frame, a grinding element, track wheels on the frame adapted to support the grinding element over the rail to be ground,

auxiliary wheels, an axle'for said wheels auxiliary wheels, an axle for said wheels overlying the truck frame, means connected with said axle for lifting the truck frame, a bearing on the frame adapted to take the thrust of the axle, and means to apply power to the axle in one direction to remove its thrust from said bearing and lift the frame, and to apply power to the axle in a different direction to lower the frame and engage the frame bearing to lift the axle and its wheels.

5. A rail grinding machine comprising a truck frame, a grinding element, track wheels on the frame adapted to support the grinding elementover the rail to be ground, auxiliary wheels, an axle for said wheels,

' guides for said axle secured to the frame,

a lifting connection between the axle and the-frame, and means for applying power to turn the axle in one direction to lower the axle on the guides and lift the frame, and'in the other direction to lower the frame and lift the axle and wheels on the gui les.

l 6. A rail grinding machine comprising a truck frame, a grinding element, track wheels on the frame adapted to support the grinding element ,over the rail to be ground, auxiliary wheels, an axle for said wheels, guides for said axle secured to the frame,

a lifting connection between the axle and the frame, a power shaft, and gearing connecting the same to the axle to turn said axle in one direction to lower it on the guides and lift the frame, and in the other direction to lower the frame and lift the axle and wheels on the guides.

7. A rail grinding machine comprising a truck frame, a grinding element, track wheels on the frame adapted to support the same over therail to be ground, auxiliary wheels, an axle for said Wheels overlying the truck frame, a jack lever secured to said axle, and a connection fIOHIYOIIG end of said jack lever to the truck frame, whereby the application of power to the other end of said lever will transfer the weight of the machine from the track wheels to the auxiliary wheels.

8. A rail grinding machine comprising a truck frame, a grinding element, track wheels on the frame adapted to support the same over the rail to be ground, auxiliary wheels, an axle for said wheels overlying the truck frame, a jack lever secured to said axle, a connection from one end of said jack lever to the truck frame, means for applying power to the other end of said lever to lift the machine clear of the track, and means for maintaining the same in lifted position, with its weightsupported on the auxiliary wheels.

9. A rail grinding machine comprising a truck frame, a grinding element, track wheels on the frame adapted to support the same T e rail to be ground, auxiliary Wheels, an axle for said Wheels overlying the truck frame, a jack lever secured to said axle, a connection from one end ofsaid jack lever to the truck frame, a gear member secured to the other end of saidlever, and a J pinion meshing therewith carried on the frame, with means to turn said pinion so as to force down the jack lever and lift the machine clear of the track rail.

10. A railgrinding machine comprising a truck frame, a grinding element, track wheels on the frame adapted to support the same over the rail to be ground, auxiliary wheels, an axle for said wheels overlying the truck frame, .a jack lever secured to said axle, a connection from one end of said jack lever to the truck frame, a segmental gear secured to the other end of said lever, a pinion intermeshing therewith journaled in bearings on the truck frame, means for applying power to said pinion, and a pawl and ratchet detent connected to the pinion to prevent reverse rotation thereof.

11. A rail grinding machine comprising a truck frame, a grinding element, means to support the frame with the grinding element in working proximity to a rail to be ground, auxiliary means carried by the truck for transportation, and means to balance the entire weightof the machine on said auxiliary means at wil.

12. A rail grinding machine'comprising a truck frame, a grinding element at one end thereof, driving mechanism and lifting mechanism carried near the other end thereof, and a track brake acting against the weight of said mechanism as well as that. of the frame.

18. A rail grinding machine comprising a truck frame, a grinding element, track wheels on the franie adapted to support the grinding element over the rail to be ground, auxiliary wheels, an axle for said wheels overlying the truck frame, a jack lever secured to said axle, a link connection from one end of said lever to the frame for liftlug-the ntter, a bearing on the frame for the same end of the lever, and means for applying power to the othenend of the lever in either direction, toward or awayfrom the frame, whereby the machine may be Iit'icd from the rail and supported on the auxiliary wheels or the auxiliary wheels may be lifted from the ground and supported on the truck, at will.

14:. A rail grinding machine surprising a truck frame, a grinding element, track wheels adapted to support the grinding element over the rail to be, ground, auxiliary wheels for transportation, a jack lever connected to the auxiliary wheels, bearing shoes connected to the end of said jack lever, a bearing for each shoe on the frame, a segmental gear on the other-end of the lever, a pinion on the frame intermeshing with said gear, and means to apply power to said pinion to raise the auxiliary wheels and superimpose their weight on the truck,

15. A rail grinding machine comprising a truck frame, a grinding element, track wheels adapted to support the grinding element over the rail to be ground, auxiliary wheels, an arched axle therefor overlying the frame, a jack lever connected to said axle above the arch, a link connection between one end of said lever and the frame for lifting the latter, a pair of bearing shoes secured to the axle and the same end of the lever and constituting continuations thereof, bearings for said .shoes on the frame constituting fulcra for the lever for lifting the axle and wheels, a segmental gear on the opposite end of the lever, a pinion intermeshing therewith journaled in bearings on the frame, means for applying power to rotate said pinion, a double ratchet'wheel with oppositely pointed teeth connected to the pinion, and a reversible double nosed pawl adapted to engage with either ratchet, whereby the application of power in opposite directions may be caused to either raise the machine from the rail and hold it suspended on the auxiliary wheels, or raise the auxiliary wheels and hold them suspended on the truck frame, as, desired.

16. A grinding machine for railway rails comprising a truck frame, a grinding element, a pair of tandem wheels adapted to support the grinding element over the rail to be ground, an outrigger to maintain the machine in upright position while grinding, and a pair of auxiliary wheels on opposite sides of the truck, with means for lifting the entire machine and suspending itfrom the auxiliary wheels.

17. A grinding machine comprising a truck frame, a grinding element, and laterally adjustable track wheels adapted to support the frame over the rail to be ground, with means to positively hold the s nne when adjusted.

18. A grinding 'n'mchine comprising a truck frame, a grinding element, and track wheels on opposite ends of the frame, with detachable distance pieces or washers between the hubs of the wheels and the side hearings in the frame.

19. The combination of a frame, bearings fixed thereon, an axle j ournaled in said bearmgs, a wheel secured to rotate on said axle, bearing faces on the frame parts on either side of the wheel, and adjustable distance pieces therebetween.

20. A grinding machine comprising a wheeled truck frame adapted when grindmg a curve to form a chord ofthe are, a grinding element on the frame, and means for alining the same over the rail comprising a laterally adjustable track wheel on the frame, together with means to positively hold the same when adjusted.

21. A portable grinding machine having a frame, a grinding element and working supports thereon, auxiliary wheels for transportation, means for suspending the frame from said wheels, and means carried by the wheels to prevent swaying the machine while suspended.

22. A portable grinding machine having a frame, a grinding element and working supports thereon, auxiliary wheels for transportation, means for suspending the frame from said wheels, and a pair of projections on the axle of the wheels engaging opposite bearing faces on the frame of the machine to prev eift swaying thereof while suspended.

23. A rail grinding machine comprising a frame, a grinding element, means for supporting the frame with the grinding element in Working position over the rail, wheels adapted to carry the entire weight of the machine, and means to suspend the machine from said wheels for purposes of trans portation.

24. A rail grinding machine comprising a frame, a grinding element, means for supporting the frame with the grinding element in working position over the rail, wheels adapted to carry the entire weight of the machine, and flexiblemeans to suspend the machine from said wheels for purposes of transportation.

25. A rail grinding machine comprising a frame, a grinding element, means for supporting the frame with the grinding element in, working position over the rail, wheels adapted'to carry the entire weight of the machine, flexible suspension means attached to said wheels and to the frame, and means to apply power to 'aise the machine so that it will ham freely from the wheels during force down said Wheels and lift the weight of the machine thereon.

27. A grinding machine comprising a truck frame, track wheels and a grinding clement thereon, a plurality of'au xiliary wheels pivotally' connected to the frame and adapted to be raised and lowered thereon, and means carried on the frame common to said wheels, connected thereto and adapted to apply power so as to force down the wheels and lift the frame thereon for purposes of transportation.

28. A grinding machine comprising a truck frame, track wheels, a grinding element and means to drive the same, a leyer pivoted on the frame, and auxiliary Wheels controlled by said lever, together with means for applying power to the lever to 'lift the truck frame upon the auxiliary means for transverse travel.

29. A rail grinding machine comprising a truck frame, a grinding element, track wheels on theframe adapted to support the same over the rail to be ground, auxiliary wheels, an axle therefor, a lever secured to said axle, a connection from one end of said lever to the truck frame, means for applying power to the other end of said lever to lift, the machine clear of the track, by superposing its weight upon the auxiliary wheels, and means for maintaining the machine in lifted position with its weight supported on the auxiliary Wheels.

In testimony whereof I affix my signature in presence of two witnesses.

. HENRY B. NICHOLS.

Witnesses JAMES S. Cmrronn,

WM. B. GOODALL.

Copies of this patent may'be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0.

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