US760641A

US760641A - Trolley-pole.

Info

Publication number: US760641A
Application number: US18138603A
Authority: US
Inventors: Alfred W Morgan
Original assignee: LEWIS M WOOD
Current assignee: LEWIS M WOOD
Priority date: 1903-11-16
Filing date: 1903-11-16
Publication date: 1904-05-24
Anticipated expiration: 1921-05-24

Description

` UNITED STATES jPATFNT- OFFICE.

rammed May 2 4, 1904. i

iFOURTH TO LEWIS lM. WOOD, OF ILONGBEA'CH, CALIFORNIA.v

TROLLEY-POLE.

'SPECIFICATION forming part of Letters'Patent No. 760,641, dated May 24,V 1904..

Application ltiled November 16,1903. Seriallm 181,386.l No model.) d l To @ZZ whom it may .concer-71,: v

Be it known that I, ALFRED W. MORGAN, a citizen of the United States, residing at Longbeach, in the county of Los Angeles and State of California, have invented a new and useful Trolley-Pole, of which the following is' a f specification.`

contact between the trolley and the conductorwire.

A further object of the invention is to permit the elevator-pole to drop below the conductor under certain conditions, so as to prevent contact ofthe pole orhar'p with any of the guy-wires or any other obstruction.

A further object of the invention is to yieldingly support the pole, the yieldability of which can bedestroyed mechanically.

Another object of the invention is to pro-Y vide means for permitting the pole to automatically drop below the conductor-wire and at the same time support said pole above the car. f

Further objects and advantages of this-invention will-appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims, it being understood that changes in the form, proportion, and theminor details of construction may be -resorted to Without departing from the spirit or sacrificing any of the advantages of the invention. e

Figure 1 is a view, partly in elevation and partly in plan, of the device applied. Fig. 2 is a similar view after the leversV have been tripped. Fig. 3 is' a vertical cross-sectional view through the base and car-top,ltaken on line 3 3 of Fig. 1. Fig. 4 is a fragmentary top plan view of one of the levers, showing Y rollers carried thereby. l Fig. 5 is an end view of the lever illustrated in Fig. 4. Fig. 6 is a vertical sectional view of' the sliding sleeve and the lever for the trolley-supporting harp.

' ductor.

Fig. 7 is a view in side elevation of a modi- `iiedform of trolley-harp and a portion of the` pole. Fig. ..8 is a similar view ofa further modified form of harp, and Fig. 9 is a like View of an additional form of trolley-harp. Fig. 10 is a detail rear elevation with the trolley-pole in section, illustrating the disposition of the upper portion of the trigger to lie out of the path of the downward movement of the .ing parallel ears 7 through which projects a yshaft 8, carried by the pole and on which the harp can rock. Theusual trolley9 is mounted in the harp at a point above the pivot thereof and is supported above the 'pole by a lever 10, movable on the reduced end 3 of the pole by a collar 10, between which and the shoulder 3b is --a spring 11, having a tendency tol force the lever 10 outward, so as 5to maintain the trolley in constant contact with the con- Suitable mechanism is also provided fornormally. holding the harp-carrying end of the pole in elevation, `and this mechanism vis illustrated as comprisingaplurality of spring-controlled levers, one of Ywhich is designated as 12 and fulcrumed at 13. One end of the lever 12 isconnected. to the pole by a coil-spring 14, while the otherv end is connectedy to asecond lever 15, horizontally-disposed and carrying a link-lever 16 which is connected to the lever Y12 and oiiers apull to the end of the leve 12 remote from the end connectedv to the spring, so as to normally hold the spring' 14 under tension. The position of the lever 12 will be governed by the position ofthe lever'15, which is provided with a bifurcated terminall, in which is aroller 17, normally engaged bya spring-trigger having a shoulder 18 resting over the top of the roller, so that the link-lever 16 will have a tendency to pull one end of the lever 12 against pull of the spring 14 and so as to throw one end of the lever 12 away from thepole and cause the spring 14 to be under tension.

The trig'ger is connected to the arm of the trolley-harp b y a connection 19, so that in the event of the trolley jumping the conductor the arm 10 of the harp would be moved beyond its normal position to such an extent that the yielding end of the trigger will be unseated, causing the lever 15 to move upward and permit one end of the lever 12 to move toward the pole, so as to destroy the tension of the spring 14 and permitting the harp-carrying end ot' the pole to drop below the conductor-Wire and below the guy-wires, thereby preventing any accident due to contact of the trolley and other obstructions. It vwill be observed that the pole is yieldably but independently mounted and when in its normal position the tendency will be to keep the trolley in constant contact with the conconductor, so as to obviate the loss of current due to continuous vibration of the trolley, which is of considerable annoyance and expense in roads employing the present style of trolley.

r1`he antifriction-roller 17 is carried by the bifurcated end of the lever 15, so as to reduce friction during the engagement and disengagement oi' the trigger with the lever 15, and in order to permit the lever 15 to easily ride upon the lower edge of the pole 3 the i rminal arms 20 are arranged to lie on either side of the lever 15, thus facilitating the restoration of the several parts of the mechanism to their normal position.

inasmuch as the trolley-harp will have a considerable latitude of movement on the pole,

the trolley will not jump owing to the usual vibration or swaying of the car, as do the ordinary constructions of trolleys, and the lever mechanism carried by the base 2 will not be actuated except under a very unusual circumstance. However, when the pole is vibrated beyond the limit of movement oi the arm of the harp the trigger 18 will he Putomatically drawn out of engagement witln the lever 15, permitting the pole to fall, above described. The spring 14 will expa` Suthciently to permit the pole to dro Vi the necessary distance below the wir i and will contact with the antifrictiondeviccs on t .e end ot the lever 15, but will not bear thereon to any considerable extent.

To reset the trigger, the pole 3 is drawn down by means of the cord 31 and presses on the lever 15, forcing it down into engagement with the shoulder or lip 18 of the trigger, and the tension of the spring will then cause the pole to move upward into operative position.

It will here be explained that the upper end portion yo1 the trigger above the shoulder 18 is bent or offset laterally to one side ot' the vertical path of the trolley-pole 3, so that when the latter is being drawn down to reset the trigger it will pass at one side of the upper portion of the trigger, and the roller 17 will engage with the shoulder 18 before the trolley-pole reaches the same, wherefore it will be understood that the top et' the springtrigger is disposed so as not to interfere with the resetting of the apparatus.

The form of harp illustrated in Fig. 7 comprises an arm 21, carried by the pole, with the trolley mounted in the free end thereof, the opposite end terminating in a depending arm 22, connected to the cord 19, and between the arm 22 and the pole a coil-spring 23 is interposed to normally hold the trolley in contact with the wire.

In Fig. 8 the form illustrated comprises a terminally-pivoted harp 24, carrying the usual trolley at the end opposite the pivoted terminal and intcrmediately connected to the cord 19, a spring 25 being interposed to preserve the normal contact of the trolley and the conductor-wire.

ln Fig. 9 the form of harp is similar to that shown in Fig. 8, but in lieu of the spring 25 a pair of spring-pressed toggles 2G and 27 are employed, which are secured, respectively, to the pole and the harp and connected by a collar 28, slidable o1 a linger 29, pivotal] y carried by the pole and around which is wound a coil-spring 30, exerting pressure against the collar 28. The cord 31 is designed for the purpose of pulling down upon the harp to restore the several parts to their normal positions.

It will be noted that by the lever 10, combined with the spring 11, a uniform pressure will be exerted upon the conductor-wire, because as the tension of the spring decreases, due to expansion, the leverage of thclever 10 will proportionally increase, so that the liability otl the trolley jumping the wire will be remote.

Having thus described my invention, what I claim is- 1. The combination with a pivoted pole, of a lever mechanism for holding the pole suspended and comprising two levers, one ol which is connected to the pole and the other lever having link connections attached to the first-named lever.

2. The combination with a pivoted pole, ot a lever, means connected with said lever to hold the pole in an elevated position, a trigger connected with said lever and aeonnector device on the pole for automatically releasing the trigger.

3. The combination with a trolley-pole, of an intermediately-pivoted lever, one end of which is connected to the pole, a secondlever, means on the second lever to engage the first lever and means engaging the second lever to hold the iirst-named lever in a position to support the pole.

4. The combination with a trolley-pole, of an intermediately-pivoted lever, one end ot which is connected to the pole, a second lever, a means on the second lever to engage the lrstlOO IIO

named lever, and'means connected With the free end of the pole for automatically releasing the levers to permit the pole to drop.V

5. The combination with apivoted trolleypole of a plurality of connected levers, one of which is connected to the poleby a spring and one of which normally maintains the tension ofthe spring, and means connected With the free end of the pole and with one of said levers for relieving the tension of the spring.

6. The combination With a pivoted trolleypole of a plurality of connected levers, one of which is connected to the pole by a spring and another of which normally maintains the tension of the spring, and atrigger for destroying the tension ofthe spring.

7 The combination With a pivoted trolleypole, of a mechanism for normally holding the pole elevated, a pivoted harp on the pole and v connected to the" mechanism, and a springpressed lever connected to the pole and the l harp for exerting pressure against the harp to release the mechanism and permit the pole to drop.

8. The combination with a trolley-pole, a pivoted harp on the pole, a lever movable longitudinally on the p ole and connected to the harp and a tension-spring exerting pressure Witnesses:

S. F. EAs'rERBRooKs, SIDNEY C. KENDALL.