US697892A - Trolley-wheel. - Google Patents

Description

Patented Apr. l5, |902.' W. SELLERS.

TROLLEY WHEEL.

IApplication filed Jan. 31,` 1902.)

(No Model.)

rv wl Nrr Sterns .WENT @unica W'ILLIAM SELLERS; OF'HAVERHILL, MASSACHUSETTS.

TROLLEY-WHEEL.

SPECXFXCATION forming part of Letters Patent No. 697,892, dated April 15, 1902.

Application lcd January 3l, 1902. Serial No. 92,000. (No model.)

Z0 all whom it 711/04,/ concern.:

Be it known that I, WILLIAM SELLERS, a citizen ot the United States, and a resident of Haverhill, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in rlrolley-Vtheels, of which the following is a specification.

This invention relates to an improved form 0l bearing for a trolley-wheel which enables the wheel to run a long time without atten- -tion and with a minimum amount of Wear and which may be readily removed and replaced when it becomes necessary to do so.

For an understanding of myinveniion reference is made to the accompanying drawings, in Which- Figure lis a side elevation of my device in the position of use. Fig. 2 isa central crosssection on line @cof Fig. l. Fig. 3 is an end elevation. Figs. 4 and 5 are detail views of one of the bearing-sleeves. Fig. (i isa crosssection on line yy of Fig. 3. Fig. 7is a View of the under side of the device on a reduced scale.

The trolley-Wheel lis of usual form and is supported in the arms 2 of the pole 3. The hubs of the Wheel are chambered out to receive the cylindrical bearing-sleeves 4, and an annular partition 5 is formed integral with the wheel and midway thereof, against which the inner ends of the sleeves 4 are adapted to bear. (See Fig. 2.) Each outer end ofsleeves 4 is provided with a flange 6, against which the ends of the hubs bear, and each sleeve is also provided with a centrally-arranged square projection 7, which is adapted to t into a corresponding notch Sin the outerend of each of said arms 2. These notches 8 lead in the general direction of the length of the trolley-pole, and the square ends 7 of the bearings 4 are held therein by Cotter-pins 9. Each bearin g 4 is bored axially from its inner nearly to its outer end to receive an aliningshaft lO, which ts tightly therein and serves to better hold the bearings in alinement. The bearing-surfaces of the hubs of Wheel I are provided with a series of dovetailshaped recesses, which are filled With graphite or other suit-able lubricant 1l. An oilhole l2 is provided which leads through partition 5 to the space between the bearin gs, and

.pins or screws.

the outer end of said hole is closed by a screwplu g 13.

As the ends of the bearings4 engage opposite sides of the annular partition 5 they will act as thrust-bearings and hold the Wheel from lateral movement. The flanges G also act in the same way, so that the wear occasioned by the lateral pressure on the wheel will be distributed upon two bearing-surfaces. The wear on the flanges 6 by the ends of the hubs is reduced to less than 0ne-half what it would be if partition 5 Were not elnployed. As the bearing-surfaces at the ends of the hubs, which are ordinarily employed to hold the Wheel` against lateral movement, soon become worn, so that the Wheel has a very objectionable amount of side play, and as the greater this looseness the greater will be the possibility of the bearing becoming clogged with dust, it Will be apparent that the inner thrust-bearing, which is formed by the annular iiange 5, in connection with the ends of the bearings 4, and which relieves the Wear on the ends of the hub, is highly important and advantageous. Moreover, this inner thrust-bearing is much more fully protected from dust than any other part of the bearing, so that the Wear thereon resulting from dust is much less than on the exposed outer bearings.

Vhen it is desired to remove the wheel from the pole, it is only necessary to remove the Cotter-pins 9 and draw the square ends 7 out of the slots. The Wheel may obviously be replaced With equal facility. It Will be observed that as the slots 8 are arranged so that they incline downwardly When the pole is in an inclined position the Weight of the Wheel Will always force the square ends of bearings 4 into the ends of said slots when the Wheel is running on the trolley-Wire, so that no Wear whatever comes on the cotter-pins. These pins, moreover, are in such a position that they Will not drop out if they do not happen to be properly bent at their ends.

By boring the holes for the alining-shaft only partly through to their outer ends a con venient means for holding said shaft in place is provided Without resorting to the use of Moreover, when oil is intro-l duced through oil-hole 12, which is afterward IOO tightly closed, the oil can escape only by passing over the bearing-surfaces and can not leak by shaft lO, as it would if the bearings et were completely bored through to their outer ends. The middle annular space about the shaft lO acts as an oil-chamber, so that the wheel may run a long time without lubrication, this capability being materially aided by the graphite in the hub of the wheel.

From the foregoing description it will be apparent that I have produced a simple and durable construction which is especially advantageous when used for the purpose for which it is intended.

I-Iaving described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is as follows:

I. A trolley-wheel having two hubs, an annular partition which is arranged between the outer ends thereof, two cylindrical bearings which are oppositely arranged in said hubs so that their ends engage opposite sides of said partition, an alining-shaft which is arranged in both bearings, and means for connecting the outer ends of said bearings to the support of the wheel.

2. A trolley-wheel having two hubs, an annular partition which is arranged between the outer ends thereof, two relatively short bearings which are oppositely arranged in said hubs so that their ends engage opposite sides of said partition,4 means for holding said bearings in alinement, and means for connecting the outer ends of said bearings to the support of the wheel.

3. A trolley-wheel having two hubs, an annular partition which is arranged between the outer ends thereof, two bearings which are oppositely arranged in said hubs so that their ends engage opposite sides of said partition, flanges on said bearings which are adapted to engage the outer ends of said hub, an aliningshaft which is arranged in both bearings, and means for connecting the outer ends of said bearings to the support for the wheel.

4. A trolley-wheel having two hubs, two bearings which are oppositely arranged therein, means for securing the outer ends of said bearings to a support for the wheel, said bearings being axially bored from their inner ends partly through to their outer endsforming closed recesses therein, and an alining-shai't which has its ends arranged and fitted in said recesses, said wheel being provided with an oil-passage which leads to the recess about said shaft between the ends of said bearings.

'Inrtestimony whereof I have afxed my signature in presence of two witnesses.

WILLIAM SELLERS.

Witnesses:

LoUIs H. HARRIMAN, G. E. UCKER.

Images