US2223732A - All purpose grinding apparatus - Google Patents

Description

Dec 3 1940. A; M 2 2233 732 ALL PURPOSE GRINDING APPARATUS Filed Oct. 10, 1936 7 Sheets-Sheet 1 INVENTOR. flPrM/KMLU/W Mu ATTORNEY.

A. W. MALL.

ALL PURPOSE GRINDING APPARATUS Filed Oct. 10, 1936 7 Sheets-Sheet 2 Qgi N 0 LE BYMNW ATTORNEY.

Dec. 3, 1940. w MALL 2,223,732

ALL PURPOSE GRINDING APPARATUS Filed Oct. 1Q, 1956 7 Sheets-Sheet 3 ATTORNEY.

Dec. 3, 1940. A. w. MALL 9 9 ALL PURPOSE GRINDING APPARATUS Filed Oct. 10, 1936 '7 Sheets-Sheet 4 .1 INVENTOR.

ATTORNEY.

Dec. 3, 1940. A. w. MALL 23231732 ALI: PURPOSE GRINDING APPARATUS 7 Filed Oct. 10, 1936 7 Sheets-Sheet 5 I IIIIIIIIII ,Iillll ll 3%? fllllllllllll llllllllllll I sir Ila

WWnmmm 7 INVENTOR. fie 7/102 lfiumm MAL ATTORNEY.

Dec. 3, 1940. A. w. MALL ALL PURPOSE GRINDING APPARATUS Filed Oct. 10, 1936 '7 Sheets-Sheet 6 INVENTOR. Aer/1'04 flmm/ W644 v ATTORNEY.

MIIIE'AIJIQIIIIIH Dec. 3, 1940- A. w. MALL ALL PURFOSE GRINDING AHARATUS Filed Oct. 10, 1936 7 Sheets-Sheet 7 INVENTOR. flan/0 i/hL/AW M444 ATTORNEY.

Patented Dec. 3, 1940 PATENT OFFICE i 2,223,732 PURPOSE GRINDING APPARATUS Arthur William Mall, Chicago, 111. {A lic tion October 10, 1936, Serial No. 105,073

I r 2 Claims. My invention relatesto rail grinding apparatus and like devices.

My invention relates more .particularly to a track rail grinder capable of fuse .uponswitch points, rail cross overs and other locations requiring a grinder that can be easily positioned for grinding at different angles .ifnecessary.

lihe principal object of my invention is to provide an improved rail. grinding apparatus of the type described that is .readily portable, being mounted upon wheelszadapted toroll onthe stock rails of a railway track I i A further object is to provide in a railgrinding apparatus of the type mentioned conveniently operated means for changing the angle at which the grinding wheel can operate v a A further object is to provide improved means for laterally shifting the grinding wheel and associated parts. 1

A further object is to provide improved means for raising or lowering the grinding wheel and associated parts, capable of operating while the grinding wheel is being driven; 1 i i A further object is to provide improved mechanism for tilting the entire-apparatus at a desired angle right or left to grind the vertical 'side walls of a switch point. T

A further object is to provide improved mechanism associated with the drive of the grinding Wheel whereby a flexible shaft takeoff may be con-' nected thereto for driving other mechanism remotely placed therefrom. i

A further object is to provide an improved frame structure whereby the'grinding Wheel, motor and supports are slidably and pivotally mounted thereon, yet capable of being fixedly positioned so the entire apparatus can be rolled forward and back on the railway tracks.

Other objects and advantages will be more apparent from the following description wherein reference is had to the accompanying seven sheets of drawings, upon which:

Fig. 1 is a side elevational view of my improved rail grinding apparatus;

Fig. 2 is a plan View thereof;

Fig, 3 is an enlarged plan view of the motor base, grinding wheel and associated parts shown in a changed position for grinding at an angle to the length of the machine;

Fig, 4 is a vertical sectional, view of the same taken generally on the lines 4- -4 of Fig. 3;

Fig. 5 is a vertical sectional view through the grinding wheel shaft and associated parts 'taken generally on the line 5,-'-5 of Fig.3; I 1

Fig. 6 is an end elevational view of the horizontal frame and one of the end rollers;

Fig. 7 is a fragmentary sectional View showing the grinding wheel raising and lowering means and is taken generally upon the line 1-4 of Fig. 2;

Fig. 8 is an enlarged view of the outrigger and associated parts with one member of the rectangular frame shown in cross section and is taken generally on a line 8-8 of Fig. 2;

Fig, 9 isa fragmentary view showing a side elevation of a portion of the frame and the outrigger parts associated therewith;

f Fig, 10 is a fragmentary plan section taken generally on the lines l0l I] of Fig. 8;

Fig, 11 is a side elevational view similar to Fig. 15 1. showing the motor, grinding wheel and associated-parts in a raised position with a flexible drive associated therewith; and

, Fig. 12. is a fragmentary plan view showing the manner in which the flexible drive is connected .to the grinding wheel drive.

In the embodiment of my invention which I have chosen to illustrate, I provide a rectangular horizontal frame member l0 that may comprise the parallel spaced channel members [2 and I4 connected at their opposite ends by a pair of cross bars I6 and [8. The cross bars [6 and I8 may be formed with suitable bearing portions 20 and 22 extending downwardly therefrom and adapted to support suitable axle members 24 and 26.. The track engaging rollers 28 and 30 are mounted upon the axles 24 and 25 respectively, and as shown, engage the top of the conventional track'rail 32. The horizontal frame II] as thus constructed is provided with the upright bar members 34 and 36 atone end and the bar memhers-,8 and 40 at the other end. Each of the sets of bar "members are connected together by suitable cross bars 42 and 44.

By welding the bar members to the channel members I2 and i4 and by welding the cross bars 42 and 44 across the extended ends, the upright frame is thus rigidly connected together and connected to the horizontal frame Ill. The cross bars 42 and 44 are further connected together by suitable" longitudinal brace members 46 and 48 thus providinga rigid frame construction capable of being grasped adjacent the upright end and movable from place to place, The uprights 34 and 36 may be formed with extended handle portions 50 which'terminate in a cross bar 52.

For supporting the grinding wheel motor and associated parts I mount a horizontal cross shaft 54 in a pair of bearing members 56 and 58 seformed. The portion 58a may also be formed with a horizontal slot 62 to receive a crank-member 64 for a purpose which will be hereinafter described.

Amotor base 66 is formed with a vertical housing 68 provided with the vertical bore 10 and is adapted to be mounted upon the upright post 60 with the rear portion thereof supported upon a pad 12 formed on the member 56a directly above the cross shaft 54. In this manner the motor base and associated parts are free to be rotated about the upright post 60 if desired.

I mount any suitable or desirable power means upon the'motor base '66. In the drawings 1 have shown a five-horse power gasoline engine Eof any suitable design that'is provided with a drive shaft 14 which extends through the side thereof. I provide the drive pulley 1=6 thereon, preferably formed with V-portions to drive the-multiple V- belts 16 mounted thereon. The V-belts 18 are adapted to-be trained upon the driven pulley 80 that is keyed to the'grinder wheel shaft 82.

. The grinding wheel'shaft' and associated parts are mounted in a supporting bracket 84 that is secured to an extension "66aon the motor base 66. I provide suitable cap screws 86 for this purpose which extend through elongatedslots 88 in the bracket 84 to permit longitudinal movement of the pulley supporting bracket for the purpose of tightening the V-belts whenever the same become loose. A locking bolt 90-mounted upon one of the extensions 92 of the bracket and passing through an ear 94 positioned thereon is adapted to bear against a shoulder 96 on the motor base and thus keep the bracket '84 in the locked extended position. The bracket 84 isformed with a yoke portion having the two arms 92 previously mentioned'which supportthe bearing housings 98 that carry suitableball 'bearing memb'ers I00 for the shaft'82. I also provide the bearing housing coverings I02 provided with space to support waste filled with lubricant so that the bearings are in effect self-lubricating. I-mount a friction cone I04 upon one end of the shaft 82 and a plate I06 upon the reduced screw-threaded portion I01 at the opposite end. The plate I06 carries a pair of grinding disc members I08 secured to the side walls thereof for vertical grindingupon the. sides of rails and switch points. Suitable ear members 92a extending-upwardly from the arm 92 to bracket 84 support a grindstone guard IIO which prevents sparks from flying off when the grinding wheel isin operation.

Means for raising and lowering the motor, the grinding wheeland associated parts (see Fig. 4) may comprise the crank member 64 previously mentioned which extends through the horizontal slot 62 in the motor support 55. The crank64 is adapted to extend horizontally between the channel members I2 and I4 and be mounted in suitable bearing brackets I I2. Adjacent the channel member I4 I provide a-sector member I I4 mounted upon the upper Wall of the channel I4. I secure a plate II6 to the crank and extendan operating lever I I8 therefrom toa point adjacent the upper frame supports "46 and 48 where I provide a handle portion I20. A pawl I22 is securely fastened to the lever H8 and is formed with a tooth engaging the rack .portion' II4m of the sector H4. The lever H8 is formed of spring metal so that the tooth of the pawl can be sprung outwardly and be moved up or down the rack as desired. In this manner the motor base 66 and all of its associated parts can be swung around the cross shaft 54 to raise or lower the grinding wheel I08 as desired. v

Means for moving the motor base and associated parts horizon-tally around "the vertical post 60 are also provided. I provide an arm 68a.

'extending horizontally from the vertical post housing 68 and carrying at its upper end a pad "681) within which a bolt I24 is screw-threadedly mounted. -Ialso provide a pivot lever I26 secured against the flattened side I21 of the vertical post 60. I mount a pair of adjustment screws I28 and I30 upon the bolt member I24 and a pin I3l secured in the pivot lever I26. An adjusting member in the form of-a turnbuckle I 33 connects the two screws togethen .In this manner, by turning upon the turnbuckle I33, thus drawing the centers of the'bolts I24 and'thepin i3'I closer together or 7 further apart as desired, the motor base and its associated parts will be revolved about the vertical axis60,'thus moving the grinding wheel to a desired angle to operate upon swit'chepoints or other portions of rails.

Means for shifting the motor'base and assembly mounted thereon crosswise 'on the horizontal shaft 54 are also'provided. and may comprise the .shifter slide :I35 which is slidably mounted upon the cross shaft 54. The slide I35 I is provided with slots-I36 upon opposite sides thereof within whichpa pair of blocks I31 are adapted to bejpositioned. The blocks I31 may be connected by'suit'able pinmembers138to the bifurcated arms I40 of a crank member I42 formed with an offset extension I44. The arm I44 of the. crank connects with a ishifternut memberml46 which has a screw-threaded rod I48 engaging a tappedwopening I49 therein. The rod I48 is mounted "for rotating movement. in a bearing I50 secured to the crossbar =48 and carries at its upper end a. hand wheel I52. Thus by rotating the hand wheel I52 and either withdrawing or inserting the threadedendof the rod -=I48:in the shifter nut I-46, the crank arm I42 willbe rotated on its pivot and move the motor and associated parts back and .-forth upon'the cross shaft 54. The pivot I54 may be mounted in a suitable bearing I56 that is formed integral with the -bracket58. It will-be obvious-that the shifter plate 135 effects this motion by bearing against aspacer I58 positioned on the-end-of the bearingportion-56a of the-motor support 56.

While I have described the frame I0 as supported upon :a .pair of rollers .28 and 30 upon a single rail '32 which-is usually adjacent the switch-point upon which it is desired to grind, I provide a further support i-nithe'form ofa .wheel I10 secured tothe outeren'd of an outrigger meming. the spaced arms I84 and I85 which carry a horizontally positioned pin member I86. The extension of the arms I84 and I85 form a bearing portion I81 which is mounted upon a stub shaft I88. The shaft I88 is adapted to be carried by a pair of right and left hand bracket members I89 and I90 that are fastened to the vertical wall of channel member I4 by suitable cap screws I82.

I mount right and left hand outrigger tipping brackets I94 and I90 upon the upper wall of channel I4 and position a nut member I98 therebetween, providing the same with suitable stud portions I99 to engage in the openings 200. I provide a drilled opening 202 in the stub shaft I80 and mount the lower reduced end 204 of the outrigger screw 206 therein. Thus the screw 206 may be rotatably mounted in the stub shaft I86. A lock nut 208 is secured to the lower end of the screw to fasten the same to the shaft I88. The screw member may extend through the nut I98 and carry a handle portion 209 which is fastened through a hole 2 I0 at the upper end of the screw.

With the wheel I10 resting on one of the track rails 32 and the rollers 28 and 30 resting upon the other track rail 32, the entire machine may be tipped to a desired vertical angle by adjustment of the screw member 200 either up or down, thus providing an effective angle adjustment for the grinding wheel I08.

From the above and foregoing it will be apparent that a comparatively simple all purpose grinder has been provided, one which may be adjusted to provide almost any conceivable angle of grinding as well as any height within limit, of the grinding wheel or at any angle off the vertical. Each of the adjusting means provided are comparatively simple to operate and can easily be handled by a single operator. It will also be obvious that the entire mechanism may be moved to and fro as desired during a grinding operation.

In order to provide power for use in the vicinity of the grinder I provide a power take-off from the grinder shaft 82. For this purpose I have provided the friction cone I04 mounted on the end of the grinder shaft 82. The shaft support bracket 84 is provided with an extension 921) on one of the arms 92 provided with suitable bolt holes so that the bracket 220 may be bolted thereto. The bracket 220 may carry a friction disc 224 to frictionally engage the cone I04. The bracket may also carry the shaft 226 connected to the disc 224 and an eccentric arm 228 by means of which the friction disc 224 may be placedv against the cone I04 or spaced therefrom as desired. The shaft 226 is connected to a suitable flexible shaft 280 which may have a suitable work tool upon the endand thus the work tool may be driven from the motor E.

The details of the take-off mechanism may be similar to those shown in my application for patent Serial No. 103,497, which matured into Patent No. 2,106,034 on January 18, 1938, and be supported in the same manner upon the arm 92b of the bracket 84. It will be observed that in order to attach the flexible drive mechanism it is necessary to raise the grinding Wheel to the position shown in Fig. 11 so that there is a proper clearance for these parts between the uprights of the frame.

While I have illustrated and described a specific embodiment of my invention, it will be apparent to those skilled in the art that changes and modifications may be made in the exact details shown, and I do not wish to be limited in any particular; rather what I desire to secure and protect by Letters Patent of the United States is:

1. An apparatus for grinding rails comprising a frame, a grinding wheel mounted on said frame, a support member for said grinding wheel means associated with said frame for adjusting said grinding wheel in any of a plurality of operative fixed vertical adjustments relative to the rails, said means including a bracket secured to the frame and having a plurality of tooth-engaging slots, a. hand lever mounted on the frame and having a tooth engageable with said slots for providing locked engagement therewith, said means also including a crank member disposed within the frame and operatively associated with the grinding wheel support member and the hand lever and bracket whereby said crank member serves to apply the thrust for raising the grinding wheel vertically and also serves to support the grinding wheel in any of its plurality of operative positions.

2. An apparatus for grinding rails comprising a frame, a grinding wheel mounted on said frame, a support member for said grinding wheel carried by the frame, and having a slot in one end thereof, means associated with said frame for adjusting said grinding wheel in any of a plurality of operative fixed vertical adjustments relative to the rails, said means including a crank member disposed within the frame and operatively associated with the slot in the support member, whereby said crank member serves to apply the thrust for raising the grinding wheel vertically and also serves to support the grinding wheel in any of its plurality of fixed operative adjusted positions.

ARTHUR WILLIAM MALL.

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