US1745026A

US1745026A - Wheel-grinding device

Info

Publication number: US1745026A
Application number: US155783A
Authority: US
Inventors: Daniel C Mulvihill
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-01-19
Filing date: 1926-12-20
Publication date: 1930-01-28
Anticipated expiration: 1947-01-28

Description

1930- b. c. MULVII;IILL 1,745,026

WHEEL GRINDING DEVICE Original Filed Jan. 19, 192% 2 Sheets-Sheet. 1

Jan. 28, 1930. D. c. MULVIHILL vWHEEL GRINDING DEVICE Original Filed Jan. 19, 1925 2 Sheets-Sheet. 2

Patented Jan. 28, 1930 UNITED STATES DANIEL C. MULVIHILL, OF HANNIBAL, MISSOURI WHEEL-GRINDIN G DEVICE Original application filed January 19, 1925, Seria1 No. 3,348. Divided and this application filed December 20,1926. Serial No. 155,783.

This invention relates to grinding devices and more particularly to means for grinding portions of car wheels after the casting operation.

One of the objects of the invention is the provision of new and improved means for simultaneously grinding the hubs and flanges of car wheels.

Another object ofthe invention is the provision of new and improved means for holding and rotating a car wheel while the same is being operated upon.

Another object of the invention is the pro.-

vision of new and improved means for conducting the wheel to and from the station where the grinding operation is performed.

A further object of the invention is the provision of new and improved means for holding and rotating the wheel together with means for grinding the same that is simple in construction, cheap to manufacture, easily assembled, eflicient in operation, and that will accurately grind the flange and hub of the wheel during the grinding operation.

Other and further objects and advantages of the invention will appear from the following description taken in connection with the following drawings, in which Fig. 1 is a side elevaton of the wheel cleaning and grinding device.

Fig. 2 is a plan view thereof with parts broken away; and c Fig. 3 is a plan view of the mechamsm for rotating the wheel.

This application is a division of myapplication for wheel cleaning device, Serial No.

3,348, filed Jan. 19, 1925, and in which the brushingmechanism is claimed;

Referring now to the drawings in which the same reference characters designate the same parts throughout the drawings, reference numeral 10 designates the frame of the device in which are journalled the shafts 11 and 12, each of which carries a brush 13 for brushing both sides ofthe wheel. The shafts 11 and J12-are operatedindependently from a counter shaft 14 through the chainv gear 15. The shaftsll and 12 are slidable through their bearings-whereby the brushes 13 may be moved toward'and from the Wheel. Suit able means for simultaneously moving the brushes are provided. As shown this is acpivot 17, have their outer ends pivotally connected to levers 21 and 22 respectfully, whereby the adjustment of the brushes may be effected by moving the lever 16.

The counter shaft 14 is suitably journalled in supports 23 mounted on the frame 10. The shaftis operated from a motor 24 by suitable driving mechanism such as worm gear 25.

The upper and

lower tracks

26 and 27 are 9 provided for guiding the wheel 28 to the different stations. Each trackcomprises a pair of angle bars 29 and 31, see Fig. 3, held in spaced relation for engaging the flange 30 of the wheel and also arranged at an incline so that a wheel will roll from one station to the next. It isnecessary that means be provided for holdingthe wheel 28in position One manner during the brushing operation. of accomplishing this is shown in Fig. 1. At the front of the machine, or on the side on which the wheel enters-the same, a latch 32 is pivotally connected to the frame 10 and is adapted to be forced upwardly by the wheel as it rolls beneath the same. When the wheel passes beneath the same to a position to be operated upon, the-latch 32 will engage the periphery of the wheel and prevent the same from moving backward.

' A similar latch 33 is mounted at the rear end of'the frame and the same is adapted to engagethe periphery or tread portion of the wheel forpreventing the forward movement of the said wheel. The latch 33 is provided with rigid extension or bell crank 34, to which a pull rod 35 is pivotally connected. Then the wheel 28 rolls beneath the latch 32, it will come in contact with the latch 33, which will prevent its further movement until the pull rod 35 is moved forward for vided with a suitable lever 37 for operating the same.

Since the cleaning mechanism constitutes no part of the present invention, it is not thought necessary to further illustrate or describe the same.

Suitable mechanism is mounted atthe rear of the frame 10 for simultaneously rough cleaning or facing the inner end of the hub and the flange of the wheel. The tracks 27 extend through the frame 10 to the grinding mechanism. Suitable guides 38 are provided for guiding and holding the upper portion of the wheel. These guides are on each side of the wheel and below the periphery thereof, so that the flange of the wheel will extend above the same, in order that it may be ground as will presently appear.

The mechanism forrough grinding or facing the inner end of the hub 39 of the wheel 28 will now be described. As shown this means comprises a rotating grinder 41 which is rotated by a suitable motor 42 carried by frame 43. The grinder may be and preferably is mounted on the armature shaft 44, as shown in Fig. 1. The frame 43 is pivotally and slidably mounted on a rod 45 secured adjacent to the lower track 27. The rod 45 is located inwardly of the center of gravity of the motor 42 whereby, gravity will tend to hold the grinder 41 out of contact with the hub. The frame 43 is provided with a stop 46 which is adapted to engage the sill 47 for limiting the outward movement of the said frame. The frame 43 is moved inwardly to bring the grinder 41 into engagement with the hub of the wheel by any suitable means, as by lever 48, rigidly secured to said frame. The frame is moved longitudinally of the rod by means of the lever 49. In the operation of the device, the lovers 4S and 49 are grasped by the hands of the operator and are suitably moved to cause the grinder 41 to engage all surfaces of the end of the hub 39 of the wheel 28.

Suitable means are provided for causing the wheel to rotate in order to insure even grinding of the end of the hub. Means are also provided for guiding the wheel during its rotation. As shown in Figs. 1 and 3, of the drawings, a means for rotating the wheel comprises a plurality of

rollers

51 and 52 having peripheral grooves 53 and 54, in alinenient with the lower tracks 27 for engaging the flange 30 of the wheel. In order to cause the wheel to rotate, means are provided for rotating the rollers 51 and As shown the roller 51 is rotated by means of a sprocket 55, which is operated from the power shaft 14 by the flexible drive 56. Roller 52 is rotated by frictional contact with the wheel 28, the parts being so arranged that the roller 51 rotates at greatly reduced speed over the power shaft 14, whereby the wheel 28 will be slowly rotated.

Suitable means are provided for guiding the upper portion of the wheel during its rotation. It is necessary that this means be so constructed that the wheel will be held true during its rotation, so that the simultaneous grinding of the flange and the hub may be more or less accurately accomplished. As shown a roller 57, having a peripheral groove 58, see F ig. 2, for engaging the flange 30 of the wheel 28 is employed for this purpose. The roller 57 is journalled in blocks 60 slidably mounted in a pair of slotted plates 59, at each side of said roller. These plates are rigidly secured to the lever 61 which comprises the lever arms 62 and ($3. The blocks 60 are adapted to be adjusted along the plates 59 by means 64 that engage the upper surface. Springs 65 are adapted to hold the block upwardly against the end. of the screw 64. The arms 62 and 63 are in parallel relation and are pivoted attheir rear ends as at 66. The counter weight 67 is adapted to be attached to the free ends of the lever arms 62 and (33, as by means of the flexible member 68 extending over the pulleys 69 and 71. The parts are so constructed and arranged that the levers or lever arms 62 and 63 will be held in either operative or inoperative position by the counterweight 67.

The mechanism for grinding the flange 30 of the wheel for removing projections and smoothing the periphery of the flange during the hub grinding operation comprises the grinder 72 rotated transversely to the said flange by a motor 73 mounted on the lever arms 62 and 63. The roller 57 constitutes a guide and gauge for the grinder 72. As the grinder wears away or if it is desirable .to grind more material from the flange, the lever arms 62 and 63 are lowered by adjusting the blocks 60 by means of the screw 64.

The form of the device shown in Fig. 23 differs from that shown in Figs. 1 and 2 in that means are provided for rotating both of the guide rollers 51 and In thisform of the device, the shaft of the roller 52 driven from the shaft of the roller 51 by gears 7 4 and 75 on said shafts, meshing with an idler gear 76, which will cause both of said rollers to turn in the same direction.

In the operation of the device, the wheels are placed on the track 27 at the front of the machine with the flange engaging the upper track for holding the wheel in upright position. The wheels roll by gravity along the tracks into enga ement with the stop 36 from which by manipulating the stop, they are admitted as required to the brushing station, where they are cleaned by the brushing operation. After the cleaning operation, the latch 33 is elevated which permits the wheel to roll onto the rollers 51 and 52' which constitute the grinding station,

where the hub and flange are properly ground.

After this grinding operation, the lever arms 61 and 62 are elevated and the wheel is pushed over the roller 52 onto the track 27 which conducts it away from the machine.

While I have disclosed my device as being operated by electric motors, it is evident that the same can be operated by any suitable power mechanism. This application is a division of application Ser. No. 3,348 filed J anuary 19, 1925, which has matured in Patent No. 1,625,137 dated April 19, 1927. i

It is thought from the foregoing that, taken in connection with the accompanying drawings, that the construction and operation of my device will be apparent to' those skilled in the art, and that various changes in size, shape, proportion and details of construct-ion may be made without departing fromthe spirit and scope of the appended claims.

I claim as my invention:

1. In combination, wheel holding means, a pair of tracks for'holding a car wheel in upright position and guiding-the same to said means, said means comprising a pair of grooved rollers in the plane of said tracks for supporting said Wheel, means for rotating one of said rollers, a grinder member associated with one of said tracks, and adapted to be moved into and out of engagement with the hub of said wheel, and meansfor operating said grinder member. s

2. In combination, wheel holding means, a pair of tracks for receiving a flanged wheel for holding the same in upright position and guiding the same to said means, means associated with one of said tracks for rotating said wheel, a frame slidably and rotatably secured to the other track, a grinder member on said frame, and means for rotating said member.

3. In combination, a wheel support, means for moving said support for rotating a wheel hereon, a guide for the upper portion of said wheel, a movable support for said guide, and a rotating grinder element mounted on said support, the axis of said element extending longitudinally of said guide.

4. In combination, a wheel support comprising a pair of grooved rollers for receiving the flange of a car wheel and for supporting said wheel, means forrotating said wheel, a supporting arm, a grinder element, means for mounting said grinder element on said arm, and a guide for said element mounted on said arm.

5. In combination, a pair of rollers for supporting a car wheel, means for rotating said rollers, a supporting bar adjacent to the side of said rollers, a grinder element, a support therefore slidably and pivotally mounted on said bar, the center of gravity of said element being outwardly of said bar whereby on said lever for grinding the flange of a wheel during its rotation on said support, the axis of said grinder being arranged at an angle to that of the wheel.

7 In a wheel grinding device, a support,

means for rotating the same, said support being adapted to support a flanged wheel and being provided with grooves for receiving the flange of said wheel, a grooved roller for engaging the flange of said wheel on the upper portion of said wheel, and means for grinding the hub and flange of said wheel while the same is rotated by saidsupport.

8. In a wheel grinder, a wheel support provided with grooves for receiving the flange of a flanged wheel, a guide for the upper portion of the flange of said wheel, a pivoted arm, a grinder on said arm for grinding said flange, and a counterweight for said arm.

9. In combination, a pair of rollers for supporting a car wheel, means for rotating one of said rollers for rotating said wheel, means for grinding the hub of said wheel, a motor for operating said grinder, a support for said motor and grinder, a hinge rod on which said and means for adjusting said motor and grinder on said rod for grinding said hub.

10. In a wheel grinding device, a frame, means for supporting a car wheel and holding the same in upright position within said frame, means for rotating said wheel while on said first-named means, a hub grinding element, a supporting member extending longitudinally of said frame in a plane transverse to the axis of the wheel hub when on said first-named means, and means for pivotally and slidably connecting said element to said member whereby when a wheel hub is being groundsaid element may be moved to and from said hub in a plane parallel with the axis of the hub and may be slid along said member in a plane transversely thereto, the center of gravity of said hub grinding element being outwardly of said supporting member whereby said element will be normally held by gravity in inoperative position. In testimony whereof I afiix my signature.

D. G. MULVIHILL.