US722608A - Trolley for electric railways. - Google Patents

Description

4 No. 722,608. PATENTED MAR. 10, 1903. A

' R. L. MGGARTNEY- TROLLEY FOR ELECTRIC RAILWAYS.

APPLICATION FILED DEC. 12, 1902.

1 10 MODEL.

/ v me/22 07 .JB y I I. r W 2 Listen SATES ROBERT L. MCCARTNEY, OF OTTUMVVA, IOWA.

T ROLLEY FOR ELECTRIC RAILWAYS.

SPECIFICATION formingpart of Letters Patent No. 722,608, dated March 10, 1903.

7 Application filed December 12,1902. Serial No. 134,962. (No model.)

T0 at whom it may concern.-

Be it known that I, ROBERT L. MCOARTNEY,

a citizen of the United States, residing at Otwire at all times except when it may be purposely desired to disconnect it therefrom.

To these ends my invention consists in the features and in the construction, combination, and arrangement of parts hereinafter described, and particularly pointed out in the claims following the description, reference being bad to the accompanying drawings, forming a part of this specification,wherein Figure 1 is a perspective view illustrating the trolley-wheel in electrical contact with a feed-wire, and Fig. 2 is a similar view illustrating the trolley-wheel disconnected from the feed-wire.

Referring to the drawings, the numeral 1 indicates a trolley-pole which is secured to the top of a car in a well-known mannerand is provided at its free end with a trolleywheel 2, which is adapted to engage an overhead feed-wire 3. The trolley-wheel 2 is supported on the end of the trolley-pole by means of a bracket consisting of two metallic arms 4, the rear or lower ends of which are substantially U-shaped in cross-section and embrace the opposite sides of the extremity of the trolley-pole and are secured thereto by bolts or rivets 5. The upper or free ends of said arms are preferably of disk shape and between them is rotatably disposed the trolley-wheel 2, which is journaled in said disks by a pin 6. The arms 4: are provided on their upper ends with laterally-projecting triangular-shaped wings or cams 7, the inclined outer faces 8 of which converge toward the trolley wheel. The extreme rear and outer ends of said wings are provided with oppositely-projecting nibs 10.

Passing transversely through the arms 4 is a bolt 12, on the ends of which is pivotally mounted a yoke comprising two arms 13,

formed of resilient metal, said arms being bent toward one another and secured together at their lower ends and at their upper ends are bent toward one another and project rearwardly above the feed-wire 3, so as to embrace the'trolley-wheel. On the under sides of the upper ends of each of said arms is pivoted a relatively small pulley 14, said pulleys slightly overlapping the adjacent edges of the upper bent ends of the arms.

To the lower end of the yoke is connected the usual cord or cable 15, by means of which the trolley may be thrown into and out of contact with the feed-wire.

The trolley-wheel 2 is arranged to complete the electrical connection between the motor on the car and the feed-wire 3 in a usual and Well-known manner, and the means for effecting such electrical connection are not herein shown, as the same forms no part of my invention. Normally the pulley 2 rests against the under side of the feed-Wire 3 and is held incontact therewith by the inwardly-curved upper ends of the arms 13, which prevent the pulley from jumping off the trolley-wire. The arms being resilient, as described, readily separate whenever they come in contact with one of the supporting-brackets ofthe feed-wire, and to facilitate this the forward and inner adjacent edges of said arms are beveled, as indicated at 16. In passing the supporting-brackets and guy-Wires the pulleys or rollers 14 engage them with a rolling action, which reduces friction between the parts and also prevents a sudden jar or shock from being communicated to the trolley-pole and likewise reduces wear upon the brackets and guy-wires. When it becomes desirable to disconnect the trolley-wheel from the trolley-wire, by pulling down on the cord or cable 15 the edges of the arms 13 will be caused to ride upon the inclined sides of the triangular wings 7, and the-upper ends of said arms are thereby spread apart, so as to be thrown out of engagement with the trolley-wire, and by the operator continuing the downward movement of the cord or cable the trolley-wheel is thrown out of engagement with the trolleywire and may be moved by said cord or cable in a position to engage another feed-wire. When the cord or cable is drawn down to disengage the pulley from the feed-wire, the edges of the arms 13 are brought into engagement with the lateral extensions 10, and the said arms are thereby prevented from being pulled out of contact with the said wings, and hence as the pulley is guided by the cord into position to engage a different feed-wire the spring-arms will be held apart until the trolley-wheel has been brought into engagement with the trolley-wire and the cord released, whereupon owing to their resiliency they will immediately spring together and embrace the feed-wire.

Having described my invention, what I claim is- 1. An electric-railway trolley comprising a yoke fixed to the end of the trolley-pole, a trolley-wheel journaled between the ends of the yoke, two spring-jaws pivoted to the opposit-e sides of said yoke and connected together at their lower ends, the upper ends of said jaws being projected inwardly and rearwardly toward one another, a cable connected to the lower ends of said jaws, and laterallyextending wings on the yoke adapted when the spring-jaws are pulled down by the cable to spread the said jaws apart, substantially as described.

2. Au electric-railway trolley comprisinga yoke fixed to the end of the trolley-pole, a trolley-wheel journaled between the ends of the yoke, two spring-jaws pivoted to the opposite sides of said yoke and connected together at their lower ends, the upper ends of said jaws being projected inwardly and rearwardly toward one another, a cable connected to the lower end of said jaws and two laterally-extending triangular-shaped wings on the yoke adapted when the spring-jaws are pulled down by the cable to spread the said jaws apart, substantially as described.

3. An electric-railway trolley comprising a yoke fixed to the end of the trolley-pole, a trolley-wheel journaled between the ends of the yoke, two spring-jaws pivoted to the opposite sides of said yoke and connected together at their lower ends, the upper ends of said jaws being projected inwardly and rearwardly toward one another, a cable connected to the lower end of said jaws and laterallyextending triangular-shaped wings on the yoke adapted when the spring-jaws are pulled down by the cable to spread said jaws apart, the outer rearward ends of said wings being provided with laterally-projecting nibs arranged to limit the spreading movement of the spring-jaws, substantially as described.

4. An electric-railway trolley comprising a yoke fixed to the end of the trolley-pole, a trolley-wheel journaled between the ends of the yoke, two spring-jaws pivoted to the opposite sides of said yoke and connected together at their lower ends, the upper ends of said jaws being projected inwardly toward one another and each provided with a horizontally-disposed roller, a cable connected to the lower end of said jaws and means carried by the yoke arranged to spread the said jaws apart when the trolley-pole is pulled down by the cable, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ROBERT L. MOCARTNEY.

Witnesses:

B. N. SCOTT, CHARLES BRADY.

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