US1035494A - Trolley-wheel. - Google Patents

Description

W. F. SWOVBLAND.

TBOLLEY WHEEL.

APPLICATION FILED JAN. 14, 1910.

Patented Aug. 13, 1912.

2 SHEETSSHEET 1.

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W. F. SWOVEL AND.

TROLLEY WHEEL.

APPLICATION FILED JAN. 14, 1910.

Patented Aug. 13, 1912.

2 SHEETS-SHEET 2.

U P MHI U attoamw COLUMBIA PLANOGIAPH 30.. WASHINGTON. D. C.

ITED STATES PATENT OFFICE.

WILLIAM F. SWOVELAND, 0F ALTOONA, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO WILBERT C. FLETCHER, OF ALTOONA, PENNSYLVANIA.

TROLLEY-WHEEL.

To all whom it may concern:

Be it known that I, l/VILLIAM F. Swovn- LAND, a citizen of the United States, residing at Altoona, in the county of Blair and State of Pennsylvania, have invented certain new and useful Improvements in Trolley-Wheels, of which the following is a specification.

The present invention relates to overhead and similar trolleys for electric railways, and the like, and the primary object is to provide a simple structure, which will conform to the inequalities of the wire, is provided with means for protecting the crosswires against injury from the wheel, and is thoroughly lubricated, so that wear is reduced to a minimum, and constant attention is not required.

Two embodiments of the invention are disclosed in the accompanying drawings, wherein Figure 1 is a vertical sectional view through one of said embodiments. Fig. 2

is a view partially in section at right angles to Fig. 1. Fig. 3 is a vertical sectional view through another embodiment of the invention. Fig. 4 is a view at right angles to Fig. 3, and partially in section.

Similar reference numerals designate corresponding parts in the figures of the drawings.

Referring first to the embodiment disclosed in Figs. 1 and 2, a pole head is shown at 5, and has in its upper portion, an internal chamber 6, from which extends a flared bore or socket 7 having in opposite walls, recesses 8 forming bearing shoulders 9. A journal pin 10 has a cross head 11 that is seated in the sockets 8 against the bearing shoulders 9, this pin 10 projecting beyond the head, and having a reduced portion 12, the upper end of which is threaded to receive a nut 13 and washer 14. The outer end of the head has a circular bearing rib 15, and the head outside of said bearing rib is beveled, as shown at 16.

The harp is designated generally by the reference numeral 17, and has its lower end mounted on the journal pin, its base portion being cut-away as shown at 18, and provided with a recess 19 to receive the rib 15. The said pin projects into the harp, and a spring 20, surrounding said pin and inter- Specification of Letters Patent.

Application filed January 14, 1910.

Patented Aug. 13,1912. Serial No. 538,135.

posed between the washer 14 and base, serves to normally maintain the harp in alinement with the head, yet permitting the lateral swinging movement of said harp, the spring always returning said harp after such move ment to properly alined position. Moreover the bore or socket 7 and the beveled or out away portions 16 and 18 are so disposed with relation to each other that the pin 10 will strike one wall of the socket when the said beveled portions engage each other.

The arms 21 of the harp have their front portions connected by a forwardly extending guard lip 22 that thus bridges the space between the lower portions of said arms, and has its upper edge outturncd, as shown at 23. These arms are connected by a bearing axle or pin 21 having a central enlarged portion 25. Rotatably mounted on the pin 24 are two sleeves 26, which in the present instance, are hollow to provide lubricant-holding chambers 27. Access to these chambers is afforded through openings closed by plugs 28, and the lubricant from the chambers is permitted to flow to the bearings of the sleeves through ports 29. Mounted 011 the peripheries of the sleeves is the trolley wheel 30. in connection with the mounting of this wheel it will be observed that the wheel is formed with openings in its sides, and the sleeves 26 (and 28 referred to later) are suitably interlocked with the wheel within the side openings thereof so that the said sleeves will rotate with the wheel and at the same time be capable of sliding therein. The sleeves are urged toward each other, and a proper electrical connection is made between them and the harp by leaf springs 31 that bear against said sleeves, and are secured, as indicated at 32 to the harp arms. The tension of the springs 31 is reinforced by coiled springs 33 interposed between the springs 31 and the arms.

With the exception of the wheel mounting, the structure shown in Figs. 3 and 4 is the same as that already described and illustrated in Figs. 1 and 2. Therefore the same reference numerals have been employed.

In Figs. 3 and 4, however, the bearing pin, which is designated 25 constitutes a lubricant reservoir, being provided with an internal chamber 26, access being obtained thereto through the medium of removable plugs 27 in the ends of said pin. Sleeves 28 are ournaled on the exterior of the pin, and mounted on these sleeves, is the trolley wheel 29 Contact springs 30 bear against the outer ends of the sleeves, and are secured as shown at 31 to the harp arms,

while other springs 32* are coiled about the pin 25 and are interposed between the springs 30 and said arms.

From the foregoing, it is thought that the construction, operation and many advantages of the herein described invention will be apparent to those skilled in the art, without further description, and it will be understood that various changes in the size, shape, proportion and minor details of con struction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Referring to the drawings further it will be noticed that the plane of the trolley wheel and the plane of the pole extension are offset with reference to each other, this construction giving what may be termed a drop harp, 2'. e. the wheel is dropped away from the harp pole extension. This construction facilitates in a very practical way the use of a larger trolley wheel without increasing the possibility of danger to cross wires caused by the hooking action of the wheeland harp. It will be further noticed that the construction of the harp is such that it serves as a protection to the cross wires and the trolley wire itself, the primary idea being to protect the copper wire and cross wires from any damage from the wheel harp.

Referring particularly to Fig. 1 of the drawings, it will be noticed that the wheel 30 is provided with a key and key way which key 20 engages the sleeve 26 providing means for rotating the sleeves with the wheel, thus making the inclined wearing surfaces more eifective.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

1. In a device of the class described, the combination of a support carrying an axle, a wheel having side openings, self-adjusting bearing sleeves rotatable with the wheel and slidably fitting in the side openings thereof, fiat springs arranged to exert an inward stress on said sleeves, and auxiliary coiled pressure springs arranged at the outer sides of the flat springs.

2. In a device of the class described, a

support carrying a double cone axle, a wheel having side openings, self-adjusting bearing sleeves slidably interlocked within the side openings of the wheel and having conical portions turning upon the cones of the axle, and yielding pressure means engaging the outer sides of said sleeves.

3. In a device of the class described, the combination of a support carrying a double cone axle, a wheel having side openings, selfadjusting bearing sleeves slidably interlocked within said side openings and having conical portions turning on the cones of the axle, yielding pressure means engaging the outer sides of the sleeves, and means for directing a lubricant directly to the conical bearings.

4:. In a device of the class described, the combination of a support carrying a double cone axle, a wheel having side openings, hol low self-adjusting sleeves slidably interlocked within said openings and having conical portions engaging the cones of the axle, said sleeves also being provided with lubricating ports leading to said cones, and pressure springs engaging the outer sides of the sleeves.

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

IVILLIAM F. SWOVELAND.

Witnesses W. C. FLETCHER,

S. B. HARE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. G.

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