US995145A - Current-collecting device. - Google Patents

Description

R. P. JACKSON. UURRENT COLLECTING DEVICE.

APPLIGATIOH TILED 11133.12, 1906.

99 145 Patented June 13,1911.

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GU'BRENT-COLLEQTING DEVEGE.

ere-W ts n l d; spe in Ethel; whom tmeo. concerns" v Bev it known that 1;, RAE" P. JACKSON, a citizen of the) United States, and a resident o1? Wilkinsburg, in, the. county of Allegheny and State oi} Pennsylvania, have invented; a new and useful Improvement in Current- Collecting Devices, or which the followingis a specification.

invention relates to current collectors that are employed upon railway vehicles and particularly to such as-are adapted to en gage third rails or similar conductors. o

The object of my invention is to provide a current collector that shall be adapted to engage a thircli ail that is disposed in either right-side-up or inverted position and Whichmay be moved to such inactive position, when not in use, that it will not protrude beyond the outline of the vehicle in connection with which it is employed.

Figure 1' of the accompanying drawings. is aview, in. front elevation, of a current collecting device that is constructed in accordance with my invention and Fig. 2 is a vertical, sectional view of the device on the line IIII oi. Fig. ll

Secured by means of bolts 1" to a WOOLliEIl or other insulating bar 2 that is carrier in :1 suitable manner b tie bocly or other of a vehicle, (not sliown) is a. bracket having downwardly extending arms 4 and 5 in the extremities of which a pivot pin or rod. '6 is loosely littccl The corresponding enrls of a plurality of links are secnrecl to the rod 6 intervals by means of pins 8, an other rod 10 being similarly secured in the other ends thereof. Loosely pivoterl upon the rod 10 are contact arms or shoes 11 and 12, the free encls of which are oi a suitable form to enable them to engage a third rail (not shown) in either right sid-e-up or invertecl position. The rorl i0 is surrounclecl at intervals by helical springs 13 the ends of .which are crossed and clisposed upon opposite sides of pins 1% that are formed-integral with or are secured to the extremities of the links 7. The springs thus serve as resilient means for opposing pivotal movements of the arms 11 and 12 upon the rod 10 and also cause them to exert pressure upon the third railwith which they-are aolaptecl to engage regardless of variations in its height, The contact arms or shoes are connected to a ter- Sgeeification of Letters latent.

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: minal. piece 15 that mounted upon the bar 2 by means of flexible conductors '16. I A U-shaped bracket 1'1, the extremities of f which are also loosely pivoted upon the rod 110, is connecteil by means of a piston rod 5 18 to a piston 19 Within a cylinder 20., that i is secured to the bracket jby means of bolts 21. The contact arms or shoes are normally 5 maintained in the positions indicated in broken lines by means of a helical compression spring. 22 that isinterposed between the lower side of the piston 1-9 anelz'the end of the cylinder 20, and are moved; to the positions shown in full lines when fluid-pressure is arlmitted to the cylinder above the piston through a suitable supply pipe 23. lllhen' the parts occupy the former position, they (lo not protrude beyond the outline of the vehicle in connection with which they are employerl and consequently not liable to injury that might be caused by striking objects located close to the tracks upon which the vehicle operates. I

Since the structural (let-ails and arrangements of the parts may obviously be varied Within considerable limits froin. what has here been specifically shown and describeil without altering the mode of operation 01 the invention or (lerarting materially from its l clesire thet'only such limitations shall he imposed are expressly set forth in the appencled claims.

claim my invention:

l current col tor h vino; a s l uteri contact arm comprising" two {El otally connector-l iner hcrs, resilient means for opposing pivotal in ycnicnt between the soicl members in either rlirection and o sting means connecterlto the pivotal joint between the members,

2 A current cello tor lie-v mounted contact arm coinpll two pivotally connected members, rcsilil t means for opposing pivotal movement between the sairl. members in either clircction, actuating means for saicl contest arm connected to the joint between its members e116; means tending to hold said arm in an inactive-position.

pivotally 3. A current collector pivotally' flow-pressuresctuetecl means for holding votally the contact arm in operative position and means for moving said arm to an inactive position upon withdrawal of fluid pressure.

4. The combination with a current-collecting device that may engage a supply conductor upon either its upper or its lower face, of a cylinder, a piston located in said cylinder and actuated in one direction by fluid-pressure, a spring also located in said cylinder for actuating said piston in the optaining the piston at one end of its stroke.

6. The combmatlon with a two-part contact shoe havin a joint between the parts and a double-acting spring serving to oppose relative movement of said parts in either direction, of a spring acting upon said joint to hold the shoe in one extreme position and fluid-pressure-actuated means to oppose the action of said spring.

7 The combination with a pivoted contact shoe havin a joint intermediate its ends and a double-acting spring serving to oppose relative movement of the jointed parts in either direction, a spring acting upon said joint to move the shoe in one directionand a fluid-pressure-actuated means for moving the shoe in opposition to the spring.

In -testimony whereof, I have hereunto subscribed my name this lOthday of April, 1906.

RAY P. JACKSON.

lVitnesses:

HENRY S. BAKER, BIRNEY HINES;

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