US1004962A - Trolley-harp. - Google Patents

Description

J. T. ARCHER. TROLLEY HARP. APPLICATION FILED JULY 11, 1910.

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JAMES T. ARCHER, OF CHAMPAIGN, ILLINOIS.

TROLLEY-I-IARP.

Specification of Letters Patent.

Application filed July 11, 1910.

Patented Got. 3, 1911.

Serial No. 571,381.

a trolley harp having a pivoted wheel supporting frame which is yieldingly held in a normal or upright position and may be swung laterally in either direction when the car is passing around curves or out of a straight course.

With this and other objects in view, the invention consists of certain novel features of construction, combination and arrangement of parts as will be more fully described and particularly pointed out in the appended claim.

In the accompanying drawings: Figure 1 is a side view of a trolley fork and wheel constructed in accordance with the invention; Fig. 2 is a central vertical sectional view of the same on the line 22 of Fig. 1; Fig. 3 is a cross sectional view of the same on the line 33 of Fig. 1.

Referring more particularly to the drawings 1 denotes the trolley pole on the upper end of which is secured a casing 2, said casing being preferably formed in separable sections which are clamped together by a bolt 3 passed through apertured ears 4 on the opposite sides of the casing as shown. On the inner edge of the upper portion of one side or member of the casing are formed studs 5 which are adapted to be engaged with sockets 6 formed in the adjacent edge of the adjoining section.

The upper end of the casing is in the form of a hollow segmental head 7 having in its opposite sides recesses 8, the purpose of which will be hereinafter described. The upper portions of the outer sides of the head 7 are in the form of circular bearing plates 9 which are provided with centrally disposed bearing apertures 10 through which is arranged a bearing bolt 11.

On the bolt 11 is pivotally mounted a trolley fork 12, said fork having on its lower end a circular head 13 which fits between the circular plates 9 on the upper end of the head 7. In said head 13 is formed a central bearing passage with which the bearing bolt 11 is engaged thereby pivotally connecting the fork 12 to the head 7 of the casing. On the head 13 is formed a downwardly projecting stop arm 14 which projects into and is adapted to swing in the segmental head 7 of the casing when the trolley fork is swung laterally in either direction. In the arm 14 is arranged a curved spring holding rod 15 with the opposite ends of which are engaged the inner end of coiled springs 16, the opposite ends of which project into the recesses 8 formed in the head 7. By providing the spring 16 the trolley harp will be swung back to its normal or upright position after being swung laterally by the movement of the car when turning curves or running out of a straight course. In the fork 12 is revolubly mounted the usual or any desired form of trolley wheel 17.

By pivotally mounting the trolley fork and wheel and yieldabl supporting the same in an upright position as herein shown and described, said trolley fork and wheel will be permitted to swing laterally in either direction when the car, for any reason, runs out of a straight course thus preventing the trolley wheel from slipping off or becoming disengaged from the trolley wire. It will be observed that the springs are inclosed and are below the pivot of the fork so that the liability of the springs being broken by forceful contact with a cross wire or other object is overcome. Moreover, the members ofthe casing are symmetrical, with exception of the studs 5 and the sockets 6, so that the fitting of the members to each other and to the pole is a very simple matter.

From the foregoing description taken in connection with the accompanying drawings the construction and operation of the invention will be readily understood without requiring a more extended explanation.

Having thus described my invention, what I claim is:

A trolley harp comprising a sectional casing with a hollow segmental head having recesses in its opposite sides, the upper portion of the head being constructed to form circular bearing plates, a trolley fork with thereon, the opposite ends of which enter 10 a circular head pivotally mounted in said the recesses of the hollow segmental heads. circular plates, said circular head being pro- In testimony whereof I have hereunto set vided with a downwardly projecting stop my hand in presence of two subscribing arm which projects into and is adapted to witnesses.

swing in the segmental head of the casing J AMES T. ARCHER. when said trolley fork is swung laterally in WVitnesses: either direction, said stop arm being pro- EUGENE BLAND, vided with a curved rod having a spring ANNA RoYnR.

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

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