US664992A - Trolley for electric railways. - Google Patents

Description

No. 664,992. Patan'teq lam-fl, [90L L. DU. CHABUT. TROLLEY FOR ELECTRIC RAILWAY-S.

(Application fllgd une 14, 1900.

' 2 Sheets-Sheet I.

(No Model.)

511 veutoz witnesses In: NORRIS PETERS c0 PHOTOJJYHO" wnsmumn. 0.:

UNITED STATES PATENT OFFICE.

LOUIS DORVILLE OHABUT, OF PITTSB URG, PENNSYLVANIA.

'TROLL E Y FOR ELECTRIC RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 664,992, dated January 1, 1 901.

Application filed June 14, 1900.

To all whom it may concern; v

Be it known that I, LOUIS DORVILLE CHA- BUT, a citizen of the United States, residing at Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented certain newand useful Improvements in Trolleys for Electric Railways; andI do hereby 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.

My invention relates to trolleys for electrical railways; and it consists of the novel construction of the several parts and their combination and arrangement, as will be hereinafter more fully described, and particularly stated in the claims.

One of the principal objects of the invention is to so construct a trolley that a continuous contact with the overhead electric feed wire or cable will be maintained unless disengaged by a person having charge of it.

Another object of the invention is to provide for automatically allowing the trolley to successfully pass all obstructions, such as stay or span wires, encountered on its passage over the feed wire or cable.

Still another object of the invention is to provide for an automatic vertical adjustment of the pole, so as to suit different distances between the feed-wire and the top of the car.

Still another object of the invention is to provide for the quick and ready disengagement of the trolley from the feed-wire.

A still further object of the invention is to provide for maintaining the trolley in a vertical position, so that the shoes will always be in a horizontal position to encounter 0bstructions.

These and other objects are attainedby means of the mechanism illustrated in the' accompanying drawings, in which- Figure 1 is a side elevation of my improved trolley; Fig. 2, a top plan view; Fig. 3, an end view in elevation; Fig. 4, a longitudinal sectional View; Fig. 5, a detail view showing the position of the'parts when the pole is inclined; Fig. 6, a detail view, partly in section, showing one of the spring-actuated locking-detents for preventing the trolley accidentally becoming disengaged from the ca- Serial No. 20,302. (No 1 5 1.)

ble; and Fig. 7, a perspective view of the oscillatory supports detached.

In the several views the numeral 1 indicates a telescopic pole composed of two sectionsa lower section 2 and an upper section 3. The lower section is pivoted to a suitable support 4:, attached to the top of the car,'and is provided with the usual springs 5 for maintaining it in vertical position.- The upper section is provided with oppositely-disposed longitudinal slots 6 6, and a pin 7, passing through thelower section,with its ends in the slots 6, serves to secure the sections together in such manner that the upper section will to keep the trolley-wheel in contact with the feed-wire. The upper end of the spring abuts against a shoulder 9, formed in the upper section, and the lower end is secured in the lower section in any suitable manner, or it may abut against a collar fastened on said lower section.

The upper end of the pole-section 3 is preferably square, and secured to the sides thereof are cheek-plates B B, in which is journaled the trolley-wheel 10. The ends of the wheelshaft extend through the cheek-plates, and pivotally mounted thereon are vertical supporting-arms 11 11, which have their upper ends bent outwardly to form stops 12 12. Secured to the lower portion of the arms 11 are brackets 13 13, to which are hinged ver= tical arms 14 14:. The upper end of each arm 14 is provided with a horizontal slot 15, in which is received the rearedge or base of a locking-detent 16. Each detent is preferably triangular in shape and is pivoted on a pin 17, secured in a bracket l8,attached to the arm 14. The inner edges of'the detents prolhe slots 6 are per-- ject inwardly toward each other,slightly overlapping, and serve to prevent the trolley from becoming accidentally disengaged from the feed-wire. Leaf-springs 19 19, one upon each side of the pivotal point, serve to hold ing against the base or rear edge of the detent. Each hinged arm is provided with a transverse slot or opening 21, through which projects a cam-arm 22 of a lever 23, journaled in bearings 24E. Coiled around each pin hinging the arm 14 to the bracket 13 are two springs 25 25, having one end resting against the bracket and the other end bent over the shaft of the lever 23. These springs serve to maintain the arms 14 in their normal position, which is vertical, with their upper ends resting against the stops 12.

Secured to the upper end of each hinged arm is a curved shoe 0, which in encountering the span or stay wires supporting the feed-wire causes the trolley to readily pass under the span or stay wires, the detents 16 preventing the feed-wire leaving the trolley. In case other obstructions are encountered the detents will instantly turn on their pivots, overcoming the force exerted by one set of the springs 19, and permit the free and easy passage of the trolley, the tensioned force of the set of springs serving to return the detents to normal position.

In order to maintain the supporting-arms 11 and their hinged attachments in a constantly-vertical position, each supportingarm is provided with oppositely-disposed side arms 27 27, to which are pivotally attached yokes 28 28, and to each yoke is attached one end of a chain 29, the other end of the chain being attached to one side of the coil-spring 8 by any suitable connection passing through the slot 6 at shoulder 9. This mechanism serves to keep the trolley well balanced and in a constant vertical position no matter how great the inclination of the pole. If deemed necessary, coil-springs may be employed to insure a more perfect balancing of the trolley, in which case the respective ends of the springs would be attached in the same manner as the ends of the chains, the latter passing through the springs.

To relieve the trolley-wheel from engagement with the feed-wire, it is only necessary to draw upon the operating-cords 30, which will cause the cam-arms 22 to force outwardly the hinged arms carrying the shoes and locking-detents, the movement of the levers 23 being limited by stops 31 striking against the sides of the hinged arms. With the parts in this position (shown in dotted lines in Fig. 3) the trolley-wheel may be readily disengaged from the feed-wire.

To insure a more regular, constant, and direct connection with the feed-Wire through the trolley-wheel, I provide a sliding contact composed of a contact-rod 32 and a tube or pipe 33, the rod being secured in the pole-section 2 and sliding in the tube, which is secured in pole-section 3.

Various changes or modifications may be made in the details of construction without departing from the spirit of my invention or sacrificing the principle thereof.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-- 1. In an overhead trolley, the combination of a telescopic trolley-pole carrying a wheel, a connection between the telescopic sections, a spring arranged to permit the vertical adjustment of the upper telescopic section, supporting-arms journaled on the ends of the wheel-shaft, oppositely-extending arms secured to the supporting-arms, yokes pivotally attached to the oppositely-extending arms, and chains having one end attached to the yokes and the other ends attached to the spring, substantially as specified.

2. In an overhead trolley, the combination with the cheek-plates of a trolley-wheel, of

arms pivoted on the wheel-shaft, spring-actuated arms hinged to the supporting-arms, automatically-operatin g lockin g-detents carried by said hinged arms, and shoes carried by the hinged arms, adapted to encounter obstructions on the feed-wire and permit the trolley to successfully pass such obstructions.

3. In an overhead trolley, the combination with the cheek-plates of a trolley-wheel, of vertical supporting-arms pivoted on the ends of the wheel-shaft, spring-actuated arms carrying shoes, said arms hinged to the supportin g arms, automatically operating lockingdetents carried by the hinged arms and means whereby said supporting-arms and their attachments are maintained in proper operative position.

4:. In an overhead trolley, the combination with the cheek-plates of a trolley-wheel, of vertical supporting-arms pivoted on the ends of the wheel-shaft, spring-actuated arms carrying shoes, said arms hinged to the supporting-arms, spring-actuated locking-detents, and means for keeping the parts in proper operative position.

5. In an overhead trolley, the combination with the cheek-plates of a illOllOY-WllGGl, of pivoted supporting-arms carrying spring-actuated hinged arms and automatically-operating locking-detents, shoes mounted on the upper ends of the hinged arms, and means for moving said hinged arms outward, as and for the purpose set forth.

6. In an overhead trolley, the combination of the cheek-plates of a trolley-wheel, of pivoted supporting-arms, spring-actuated arms hinged to the supporting-arms, cam-levers journaled in the hinged arms, and means for operating said levers to cause the hinged arms to move outwardly so as to permit the disengagement of the trolley from the feedwire.

7. In an overhead trolley, the combination of supporting-arms pivoted on the ends of the wheel-shaft, spring-actuated arms hinged to the supp0rting-arms, and shoes arranged at porting-arms, yokes connected to the outwardly-extending arms, of a telescopic pole,- a spring for vertically adjusting the upper telescopic section, and connections between the yokes and said spring, whereby the supporting-arms are held in constant vertical position.

In testimonywhereof I aifix my signature ,in the presence of two witnesses.

LOUIS DORVILLE CHABUT;

Witnesses:

D. GREGG MOKEE; J l O. MCCORMICK, Jr

Images