US1310345A - Trolley-suppobting- device - Google Patents

Description

C. A. JONES.

TROLLEY SUPPORTI NG DEVICE.

APPLICATION FILED APR. 7, HJIQ.

Patented July 15, 1919.

120-, WASHINGTON. D. C.

CHARLES A. JONES, OF HILLSBORO, NEW HAMPSHIRE.

TROLLEY-SUPPORTING DEVICE.

Specification of Letters Patent.

Patented July 15, 1919.

Application filed April 7, 1919". Serial No. 288,108.

To all whom it may concern Be it known that I, CHARLES A. JoNEs, a citizen of the United States, residing at Hillsboro, in the county of Hillsborough and State of New Hampshire, have invented certain new and useful Improvements in 'lrolley-Supporting Devices; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to electric railway trolleys, and it relates more specifically to an improved trolley supporting device.

The main object of this invention is to produce a very practical trolley which will ride the wire without chafing, and generally improve upon devices of this character by providing a structure that is exceedingly compact and practically self-protecting, and which consists of very few and simple parts so that its cost of manufacture is reduced to the minimum.

Other objects and advantages may become apparent to persons who read the following details of description in connection with the accompanying drawings, in which Figure 1 is a side elevation of my improved trolley supporting device.

Fig. 2 is a vertical sectional view, parts being broken away.

Fig. 3 is a horizontal sectional view along the line 33 of Fig. 2.

Fig. 4 is a perspective view illustrating the trolley-head and the spring secured thereto.

Fig. 5 is a perspective view of the lower part of the trolley-harp.

Referring to these drawings in detail, in which similar reference characters correspond with the several parts throughout the several views, and in which the trolley-pole 5, trolley or wheel 6 and the upper part of the trolley-harp are of ordinary construction, the invention consists broadly in the construction and arrangement of the trolley-head 7, the spring 8 and the lower end or base portion 9 of the trolley-harp.

The trolley-head 7 comprises a socket portion 10 (to receive the trolley-pole 5), a cylindrical housing 11 having a bottom 12, a centrally disposed and upwardly extending socket or pivot bearing 13, a stop or lug 14, and a slot or spring-seat 15.

The trolley harp 9 is formed with a circular piece 16 having a notch 17 adjacent to one edge and a recess adjacent to its dia metrically opposite edge, shoulders 18 defining the ends of said recess. A pivot 19 is formed on and extends down from the central part of the base 16, and this pivot is provided with a peripheral groove 20 which receives a key or pin 21, the latter being seated and secured in a bore which extends along a chord of the cylindrical bearing 13, as clearly shown in Figs. 2 and 3. This pin 21 permits rotary movement of the pivot 19 in the bearing 13, and the lug 14 is disposed between the shoulders 18 so as to limit the rotary movement of the trolley-harp relative to the trolley-head. The spring 8 is secured in the spring-seat 15 and extends upward therethrough into engagement with the notch 17 and constantl tends to hold the trolley in alinement' with the trolley'pole, so that the lug 14 normally stands midway between the shoulders 18. However, when the trolley is traveling around a curve of the railway track, so that the trolley-wire changes its direction, the necessary rotary movement of the trolleyharp takes place against the resistance of the spring 8; but the lug 14 prevents an excessive rotary movement of the trolley-harp relative to the trolley head, and when the trolley again travels upon a comparatively straight part of the trolley-Wire, the spring 8 returns the trolley-harp to its normal alined position.

The housing of the trolley-head has 0 positely disposed openings 22 therein, w ich dispenses with unnecessary material, permits easy access for seating and removing the pin 21, and permits air to circulate about the bearing 13 so as to keep it cool.

From the foregoing description, it will be seen that I have provided a very compact, strong, durable, and comparatively inexpensive structure, and that the spring 8, bearing 13 and limiting lug 14 are thoroughly protected from contact with the trolley-wires and their adjuncts.

My chief claim of advantage is that this construction results in a very practical trol ley that will follow the wire without chafing it, and without having a tendency to climb up on the flange and leave the wire.

Although I have described this embodi ment of my invention very specifically, it is not intended to limit this invention to these exact details of construction and arrangement of parts, but I am entitled to make changes within the scope of the inventive idea disclosed in the foregoing description and following claims.

What I claim as my invention is z- 1. In a trolley supporting device, a trolley-harp comprising a base and a pivot extending down from the base, a spring, and a trolley-head comprising a bottom, a bearing 011 and extending up from said bottom, a casing around said bearing, and a lug extending inward from the wall of said casing, said trolley-harp having its pivot seated in said bearing, said spring extending from said bottom to said base and being connected thereto and eflective to hold said trolleyharp in its normal position relative to the trolley-head, said lug being in position to limit the turning of the trolley-harp relative to the trolley-head.

2. In a trolley supporting device, a trolbearing extending up from the bottom of said housing, a lug extending inward of the housing, and a slot in the bottom of the housing, said spring being secured in and extending up from said slot, said trolleyharp having its pivot seated to turn in said pivot-bearing, said base of the trolley-harp having a recess engaged with the upper end of said spring, said base having shoulders movable into contact with said lug so as to limit the turning of said trolley-harp relative to said trolley-head.

In testimony whereof I have hereunto set my hand.

CHARLES A. JONES.

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

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