US1036286A - Trolley. - Google Patents

Description

G. E. LYNCH.

TROLLEY.

APPLICATION FILED JUNE 21. 1907.

Patented Aug. 20, 19121 gig-.

Sink? 8 COLUMBIA PLANOL MPH C'v., WASHINEITCN. D. it.

GEORGE E. LYNCpI-I, OF CHELSEA, MASSACHUSETTS, ASSIGNOR, BY MESNE ASSIGN- MENTS, T0 THE JEFFREY MANUFACTURING COMPANY, .A CORPORATION 0F OHIO.

TROLLEY.

To @ZZ whom t may concern:

Be it known that I, GEORGE E. LYNCH, a.

citizen of the United States, residing at Chelsea, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Trolleys, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to improvements in trolley devices employed for taking electric current from a supply-wire to a motor on a moving car, and has for its object to simplify and improve the construction of such apparatus.

In the accompanying drawings-Figure 1 is a side view of a locomotive having a trolley mechanism embodying my improvements applied thereto, parts of the locomotive frame being broken away in order that the trolley apparatus may be the better illust-rated. Fig. 2 is a longitudinal sectional view of the trolley support. Fig. 3 is a vertical sectional view taken at right angles to the plane of the section of Fig. 2. Fig. 4 is a top plan view of the support or base for the trolley-arm. Fig. 5 is a horizontal section taken on the line 5-5 of Fig. 3.

In the drawings, a car A is represented, to which my invention is applied. This car may be of any usual or approved construction, that shown being of a well known mine locomotive type. The trolley 'support may be applied to or supported upon the car in various ways, but as the side parts of locomotives of the character illustrated are usually formed of large castings, I nd it convenient to mount theV trolley base or support in a cavity or chamber formed in the side part of the locomotive frame, as indicated at 2. This chamber may be contracted at the lower part and expanded or widened, as indicated at 3, near the top.

4 indicates a bearing sleevey or tube constructed to fit the expanded part 3 of the chamber in the car frame. It is formed with a top flange 5 adapted to rest upon the car frame and constitute the vertical support for the trolley. The sleeve is preferably provided with webs or lugs 6 fitting into recesses in the car frame and serving to prevent rotation of the socket-piece 4. This latter part may be secured in place by bolts if desired, as, in a trolley base made according to my invention it is not .neces- Specicaton of Letters Patent.

Application led `Tune 21, 1907.

Patented Aug. 20, 1912.

serial No. 380,184.

sary to frequently remove this part. At the f 18 designates the trolley-arm, which is provided at .its outer end with a wheel or contact device adapted to engage with the supply-conductor. The arm is supported at its lower end in a socket 19, provided with a transversely disposed sleeve or bearing 20. This bearing lies bet-Ween ears or perforated lugs 22, 22, to which'it is connected by a pivot pin 21. The supporting lugs or ears 22 are carried by a sleeve 25 that fits within the socket-piece 4, the sleeve being formed with an outward extending flange 26 adapted to'rest upon the ange or top-piece 5 of the socket.

30 indicates a tubular support in which is mounted the springv 11 that operates to hold the trolley-arm in working position. This support preferably consists of an elongated lower tubular portion adapted to extend through the aperture 7 in the lower plate of the socket-piece 4 and to project below such plate into the lower part of the chamber 2 formed in thel framework of the locomotive. The upper portion of the tube 30 is expanded, as indicated at 31', and lits closely the central opening in the sleeve 25. The expanded part 31 of t-he spring-inclosino tube is preferably of irregular shape, as indicated in Figs. 4 and 5, in order that there can be no rotation of the tube and sleeve 25 relative to each other, although they are toget-her free to turn in the socket 4. The lower part of the expanded portion 31 of the sleeve is preferably formed into a bearing-face 29, adapted to rest upon the plate 10 of the socket 4. A pin 8 prevents vertical movements of the tube 30 without however interfering with `its free rotation in the socket 4.

For holding the trolley in working posi-` tion I employ a torsion spring 11, consisting of a piece of highly tempered metal rod of square or equivalent shape. The spring at its lower end is supported in a block 15 set into the lower open end of the tube 30, where it is held by screws 16. A cotter pin 17 may be employed to hold the spring 1n the block 15. The other, upper, end of the spring is connected with a lever 12, arranged above the top-plate 32 of the tubular spring case.

to the arm andihold the latter in workingy This lever is provided with a perforated boss or projection 13, that is fitted in an aperture in the top-plate 32, and serves as a trunnion support for the lever. The spring extends axially through the trunnion and lever and is preferably connected to the latter by having its head upset or riveted thereto. The lever arm 12 extends substantially parallel with the top face of the plate 32, and is provided at its outer end with a contact roller 14, adapted to engage with a lug or eccentrically disposed projection 23, carried by the socket-piece 19, in which is mounted the trolley-arm.

24 indicates a stop carried by the top plate of the spring case, against which the lever 12 rests Awhen the trolley-arm and its supporting Asleeve 25 are removed from the car.

It will be understood that the socket-piece t and the spring case 30, after being properly assembled and applied to the car are intended to remainv in place indefinitely, as the trolley-arm and its direct support are easily removable from these parts; it being, under many conditions of use, desirable to frequently remove the trolley-arm from one side of the car to the other, or from one car to another.

Tension to the desired degree is applied to the spring 11 by turning the block` in the lower end of the casing or tube 30, and then securing it in place by the screws 16. rlhe spring should be strong enough to hold the trolley-arm at the greatest elevation that it is desirable it should attain, say 70 degrees. As the arm is forced down, the lug or projection 23 bears against the roller of the lever 12 and turns it, twisting the spring-rod 11, and so increasing its lifting efficiency.

There are numerous advantages incident to a form of trolley apparatus suoli as l have described,rainong which may be mentioned the simplicity and relatively small cost of the spring, the small amount of finishing of parts that is required, and the uniformity of pressure of the trolley upon the wire incident to the use of a torsion spring.

What I claim is 1. In a trolley device, the combination of a pivoted trolley-arm turning about a horizontal pivot, a torsion spring whose longitudinal axis is substantially vertical, and connections between the spring and the arm arranged to transmit the force of the spring position, substantially as set forth.

2. In a trolley device, the combination of a trolley-arm turning about a substantially horizontal pivot, and provided with an eccentric lug or projection, a lever turning in a plane substantially parallel with the axis about which the trolley-arm turns arranged to engage with said eccentric projection, and

` a springv for operating the lever and. holding it in engagement with the eccentric projection to maintain the trolley-arm in working position, substantially as set forth.

3. In a trolley device, the combination of a trolley-arm turning about a substantially Vbprizontal pivot,- a support for the trolleyarm adapted to .turn about a substantially vertical axis, a torsion spring supported in a position substantially concentric with the axis about which the trolley support turns, and connections between the trolley-arm and the spring, whereby the latter holds the former in working position, substantially as set forth.

et. In a trolley device, the combination of a trolley-arm supported upon a substantially horizontal pivot and provided with an eccentric projection, a trolley support turning about a substantially vertical axis, a lever acting uponthe said eccentric projection and movable in a substantially horizontal plane, and atorsion spring connected with the lever and arranged to hold it in operative engagement with the said projection, substantially as set forth.

5. In a trolley device, the combination of a supporting socket, a spring case substantially concentric therewith, there being formed a chamber between these two parts,

a trolley-arm, a support for the trolleyarin adapted to be freely set into and re- .substantially as set forth.

7. In a trolley device, the combination of a spring case, a pivoted trolley-arm provided with an eccentric projection, a support for the trolley-arm arranged to be freely set over the said spring case, a spring within the case, and a lever mounted on the top of the spring case, to which the spring is connected, arranged to bear against the said eccentric projection to hold the trolleyarm inl working position, substantially as set forth.

8. In a trolley device, the combination of a spring case, a trolley-arm, a trolley support to which the trolley-arm is pivotally connected, arranged to set over the said spring case, the spring case and trolley support being rotatable together about an axis longitudinal of the spring case, a torsion spring mounted within the spring case, and connections between the said spring and. the trolley-arm through which the force 'moved from the said chamber, and a spring situated in the said spring case for holding 'iso of the spring operates to hold the arm in working position, substantially as set forth.

9. In a trolley device, the combination of a supporting socket, a tubular spring support extending through the socket, there being between the said parts an annular chamber, a trolley-arm turning about a horizontal pivot and provided with an eccentric projection 23, a trolley support mounted in the said annular chamber arranged to turn about a substantially vertical axis, a torsion spring' arranged within the cylindrical spring case, and a lever mounted on the top of the spring case, with which the spring is connected, arranged to bear upon the said eccentric projection to hold the trolley-arm in working position, substantially as set forth.

10. In a trolley device for cars, the combination with the car body or frame, of a trolley arm, a support upon which said arm is pivoted having a swveling freely separable connection with the said body or frame,

a spring connected to said body or frame, and freely separable operative connections between the spring and trolley arm, substantially as set forth. y

ll. In a trolley device for cars, the combination'with the car' body or frame, of a trolley arm, a support upon which said arm is pivoted having a swiveling freely separable connection with the said body or frame, a spring having one part secured to move with the said support in its swivelng movement and a part free to move under tension relative to the secured part, and freely separable operative connections between the freely movable part of said spring and the trolley arm, substantially as set forth.

In testimony whereof I afliX my signature, in presence of two witnesses.

GEORGE E. LYNCH.

Witnesses I-I. C. FREEMAN, R. A. MCMULLIN.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, D. C.

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