US760736A - Trolley-pole head. - Google Patents

Description

PATENTED MAY '24, 1904.

LE. GREENWOOD. TROLLBY POLE H'EA'D. APPLICATION FILED SEPT. 25, 1903.

2 SHEETS-SHEET 1.

N0 MODEL.

WITNE$$E S aw, 01w.

m: Nonmayngns cc PHOYCLLlTHOu WASHINGTON, n c.

Patented my 24, I904.- 1

' abundance of current andjto insure the pas- 7 line-wire.

citizen of the United States, residing at Utica,

1 have invented certain new and useful Improvefreedom of the harps andthe wheelssupportor wheels over switches, crossovers, or breaks such differences in direction between the car TROLLEY -POLE'HEAD;

SPECIFICATION forming part of LettersPatent No. 760,736, dated Me '24, 1904. i

' A lication filed September 25,1903.

To all whom it may concern..- I Be itknown'thatI, JOHN E. GREENWOOD, a

in the county of Oneida and State of New York,

inents in Trolley-Pole Heads, of which the following is a specification, ireference being had therein to the accompanyingdrawings.

My invention relates to improvements in trolley-pole heads for railways receiving their motive current .from. a wire, and more especiallyto'that class of heads wherein is employeda plurality of wheels or collecto'rs. 1 Among the objects of my invention is to provide an improvement in the method of mounting the trolley-wheels'upon the trolley-pole or other support so as to permit the greatest ed therebyiand the mountingsof the harps and other supporting me a'ns, which is accom plished in sucha'way in't'he invention I now" disclose. as tofcomp'ensatejfor any inequalities; or unevenness in the trolley-wire and forl any" vibration of the wire or car and its parts. j I also secure the safe passingof' the collectors] in the continuity ot the wire; f It is further of advantage in its capacity to easily supply:-

sage of the current should one i of the colle'cl tors or wheels for any'reason become displaced or inoperative. or fail to make contact with the One ot the particular advantages of my'device is that it enables the collectors to keep the wire, even thoughthe car is on a sharp curve, where the body of the car and the trolley-pole will take an'angle to the line-wire before the collectors or wheels have reached the curve.- 3

The 'construction of my device allows for and pole and the direction of the wire on which the wheels travel, sothat no changes in direction by the car will have a tendency to run view of the device.

' viewsofthe .harps. j

' are .well known in the art, by 'w'h Serial No. 174,539. (No modem confine myself to the particulars there shown,

as they are intended merely for the purpose of showing the application of my invention.

. I Figure 1 of the drawings is a side elevation of mydevice. and 4 are viewsof collars employed in mount- Fig. 2 isa top view. Figs. 3

ing my improved device; and Figs. 5 and 6 are views of theharp-bolt, one. being a side and the other'a frontview, Fig. 7 isa rear Fig. 8 is a view of one of the wheelrha r p's, while Figs. 9 and 10 are top Referring to the figuresmore in, detail, 1

represents a trolley-pole, which provided 1 at its free end witharecess 1, in which is secured the bolt' 2 by the insertionof its fiat- ;tened'hea'dQ between theshoulders'l", provided ,at the'endof pole'l, inwhich position it secured. by bolt 3, passing through transverse openingsin the end of pole I and the 'head of bolt 2. It will be under-steed, that the'trolley pole is providedwith means which hits upper endfli's' heldupwardlyto nor malntain the collectors in contact withtl olley-wire This bolt 3 has an enlarged an ,-extended head,as':shown at 3fin Fig.1 7, a'ndon which 3 is seated spring 4:, one end of which is secured to slotted lug 4' on polel or' byother suitable means, and the other end of which is secured in an aperture in a collar 5, supported on boltj2, which is provided with shoulders 2' for the support of such collar, and in which position the collar is held by a pin 5 passing through collar. 5 and bolt 2.

' On the bolt 2 and supported bythe collar 5 are the wheel-harps 6, which areshownasgether to slip down on the bolt 2. Above these ends of the harps is secured collar 7 by 10 10 show the trolley-wheels, which are-of a suitable form and'construction and are sup- '95 means of pin 7* passing through it and bolt ported in the harps by journals 11 11 and pins 11 11. The harps are extended farther outwardly, as shown by parts where the two sides are united and from which point strap By the parts thus far shown I have pro' vided for the support of the harps with the wheels in contact with thewire, the harps being supported on bolt 2, which by means of spring 4: is held in substantially vertical position on the end of pole 1, but with a certain amount of play to and fro longitudinally with the line-wire, which is shown by X.

In order to provide for the lateral play of the harps and still give them a normal position in alinement with the wire and" pole, I provide a spring connection between bolt 2 and each of the harps 6. One of the harps is held by spring 13, which is seated on bolt 2 between the head 2 and the shoulder 2", and one end of which is confined in slot 2 in the head of bolt 2 and the other end of which is confined in slotted lug 6, which is secured on the harp near its mounting on bolt 2.

The spring 14, which controls the other harp,

is -seated on the collar 7, one end of it being secured in a slotted lug 14 on the shank of,

the other harp, and the other end of the spring is secured in a socket in the upper end of bolt 2. The bolt 2 is capped with collar 15, secured by pin 15. Since the harps are mounted to turn on their bearing on bolt 2, each harp 'is free to turn on the bolt 2, notwithstanding the difference in direction which may be taken by theear and the pole. The spring connection jbetween'the bolt and the harp tends to bring each harp into alinement with the polewhen the latter is in alinement with the wire and in this respect limiting the horizontal movement of the harps, It will thus be seen that I have provided a plurality of contact means with the wire such that the harps are free to move up or down to a limited extent and independently to move laterally to a limited extent, being always brought to their normal position of alinement with the car and with the wire by the springs con nected to the several parts, as shown.

It will of course be understood that the parts shown are of proper material to furnish means for conducting a current from the wire to the motor of a car;

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a device of the character described, a trolley-pole, a bolt so seated therein as to permit movement of the latter in a vertical plane, current-collectors so mounted on the bolt as to permit horizontal movement of each collector independently, means for maintaining a normal vertical position of the bolt and a normal position of the collectors in alinement with the trolleypole, in combination substantially as described.

2. In adevice of the character described, the combination with a trolley-pole having a harp mounted thereon of a' head-bolt mounted on the pole to have a limited movement in a vertical plane, wheel-harps mounted on the headbolt to have a horizontal movement and trolley-wheels, journaled in the harps, substantially as described.

3. The combination with a trolley-pole having a forked end of a head-bolt mounted thereon by means of a transverse bolt to have a movement in a vertical plane, means to limit the vertical movement and retain the head in normal position, harps mounted on the headbolt to have horizontal movements, trolleywheels journaled in the harps, substantially as described.

4. The combination with a trolley-pole of a head-bolt pivotally connected to have a movement in avertical plane, means connecting the pole and head-bolt to limit the movement of the latter, wheel-harps mounted on the headbolt to have independent horizontal movement, means to limit the movement and return the harps in longitudinal alinement with the trolley-pole, trolley-wheels journaled in the harps, substantially as described.

5. The combination with a trolley-pole having a forked end of a head-bolt mounted thereon by means of a transverse bolt to have a movement in a vertical plane, spring means connecting the trolley-pole and the head-bolt, and regulating the vertical movement of the latter, wheel-harps mounted on the head-bolt for independent horizontal movement, spring means connecting the head-bolt and each harp, regulating the movement of each harp, means to retain the spring means in place and trolley-wheels journaled in the harp, substantially as described.

6. The combination with a trolley-pole of a head-bolt provided with harps mounted thereon, wheels journaled in the harps and means for retaining the wheels thereon, said means comprising a journal for each trolley-wheel, and a strap between the flares of the trolley-wheel, substantially as described.

7. The combination in a trolley-pole, of a head-bolt pivotally connected to have a movement in a vertical plane, means connecting the pole and head-bolt to limit the movement of the latter, wheel-harps mounted to have independent horizontal movement on the headbolt, means to limit said movement, collectors mounted in theharps and means provided for retaining said collectors, said means compris- ITO ing a strap mounted on the harp and extending below'the collector's, substantiallyzas described. 8. The combination with a trolley-pole having a forked end,"of a head-bolt mounted there- I on'to have limited movement in a vertical plane, means limiting said movement and re-' taining thehead-bolt in a normal vertical position, harps mounted on the head-bolt to have horizontal movements, trolley -'wheels 'jour naled in the harps, substantially as described.

9, In a device of the character described, ,v

the combination of a trolley} pole provided with means to hold the same upwardly, [current collecting means supported thereon, 5 means for maintaining said collecting means in normel alinement with the trolley-Wire and permitting a limited horizontal movement of each andalimitedvertical movement of the series of said collecting means, substantially as 20

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