US1021420A - Shoe for third-rail electric cars. - Google Patents

Description

1 L. A. Mocoum al 0.11.11AYDURE.

' SHOE FOR THIRD RAIL ELECTRIC GARS.

urLmATIoN FILED 1120.21, 1911.

l1,021,420., s n' Patented M1126, 1912.

'FIG 3 COLUMBIA PLANO'JRAPH c0..wAsMlNn'roN D c n'NiTEn STATES PATENT ormcn.

LOUDEN A. MCCOUBRIE AND CHARLES F. RAYDURE, OFiPI-I'ILADELPI-IIA,

' PENNSYLVANIA.

SHOE FOR THIRD-RAIL ELECTRIC CARS.

Specification of Letters Patent.

Patented Mar. 26, 1912.

Application led December 21, 1911. Serial No. 667,141.

To all whom t may concern:

Be it known thatwe, LOUDEN A. McCon- BRIE and CHARLES F. RAYDURE, both citizens of the United States, residing at the city of Philadelphia, in t-he county of Philadelphia and State of Pennsylvania, vhave ointly invented certain new and useful Improvements in Shoes for Third Rail Elect-ric Cars, of which the following is a specification.

Our invention relates to certain improvements in third-rail shoes for electric cars of t-he type patented to usFebruary 28th 1911, No. 985,430, and November 28th 1911, No. 1,009,767, relating in the present instance to the operative arrangement ofthe shoe contact member with the support-ing member thereof, in order that the shoe contact member may be held uniformly in operative condition under the influence of a movable spring controlled vertical connecting device and any take-up due to wear of the slice to be readily compensated for thereby, from underneath 'the shoe contact member within the range of permitted movement-4 of the back-stop of such member in the chambered part of the supporting member therefor.

With t-he foregoing ends in view, our present invention will be more fullyunderstood from the following description, taken in connection with the accompanying drawings forming part hereof, in which- Figure 1, is a top or plan view of a thirdrail shoe embodying main features of our said invention. Fig. 2, is a front elevation of the same. Fig. 3, is a vert-ical central sect-ional view on the line a', 0c, of Figs. 1 and 2; ,and Fig. 4, is an underneath broken elevational and sectional view of the vertical spring controlled movable connecting device, of our said invention, seated underneath the shoe contact member of the same.

Referring to the drawings 5, is t-he hori- Zontal shoe contact member, as shown, provided with a removable contact-piece 5a.

6, is the vertical supporting member in which the member 5, is pivoted by means of a bolt passing through end journals 6a, ofY

the member 6, and which bolt is held in place against displacement by means of cot` ter-pins 6b, as clearly shown in Fig. 2. The journal bearing 5b, of the member 5, is provided with a vertically arranged back-stop 5 as shown in Fig. 3 to engage in the chamber-ed partv 6, of the perforated projection 6d, of the member 6, as also clearly shown in Fig. 3.

7, are insulated electric wire connectionsv of the member 5, with the member 6, as clearly shown in Fig. 2. The member 6, by a ratcheted surface on the back, is adapted to be securely att-ached to a complemental surfaced plate suspended from the car-truck frame, not shown, for maintaining when secured the two firmly to each other against displacement.

The member 5, on the underneath side in the rear, is provided with two recessed hump portions 3, S, and with an opening 8, extending through the said member of greater length than width, for a vertical bar to be inserted therethrough, for a purpose to be presently fully explained. This opening is arranged between the two humped portions of the member 5, as clearly shown in Figs. 2 and 4.

Theperforated projection 6d, of the member 6,*is formed with a seat 6e, for a helical Spring 9, to bear against at one end and at the opposite end against the head 10a, of a vertical bar 10, extending through the said projection 6d, and the enlarged opening 8a, of the member 5, and which is threaded along the lower portion for loosely mounting underneath the shoe contact member 5, a cross-bar 12,k with an enlarged central opening 12a, the limbs of this bar on both sides of the central opening thereof, engaging in the recessed humped portions 8, 8, of the bottom of the member 5, and afforded play therein. The said vertical bar at its lower extremity is provided with a tightening nut 13, adapted to be brought into close contact with the surface about the central opening of the cross-bar 12, as clearly shown in Fig. 4. The above arrangement forholding the members 5 and 6, in operative relation with each other under spring tension also and principally as so arranged insures with uniformity, the Shoe contact member being maintained always in good electrical contact with the third-rail, not shown, by reason of the ease of movement that the member 5, can be maintained in its operaple turning of the nut 13, on the vertical bar l0, as Will be apparent and readily understood from Fig. 3, of the drawings.

Having thus described the nature and objects of our invention, What We claim as new and desire to secure by Letters Patent is A shoe for electric railway cars, comprising a supporting member having a front perforated project-ion provided With a chamber in one part thereof and with a recessed seat in another part, a shoe contact member having a rear portion provided With an enlarged opening and a back-stop and on the under side with recessed hump portions, said back stop extending into the chambered part of said supporting member, a vertical bar carrying and supporting one end of a helical spring and engaging at the opposite end the recessed seat of said projection, a cross-bar having an enlarged central opening freely fitting said vertical bar and said cross-bar movably engaging in the recesses of said hump portions and a tightening means threaded to said vertical bar from the underside of said shoe contact member, substantially as and for the purposes described.

In Witness whereof, We have hereunto set our signatures in the presence of the two subscribing Witnesses hereto.

LOUDEN A. MCCOUBRIE. CHARLES F. RAYDURE.

Witnesses:

THOMAS M. SMITH, HELEN F. MILLER.

fUopes of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents.

Washington, D. C.

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