US1009767A - Shoe for third-rail electric cars. - Google Patents

Description

- L.A. MQGOUBRIE & G. F. RAYDURE.

SHOE FOR THIRD RAIL ELECTRIC CARS.

APPLICATION FILED OCT. 22, 1910.

9,767o Patented Nov. 28, 1911 E E E\\\\\\\\\\ 7&1, 444: gm;

WITNESSES BY h! Maflw nvvzurons, I

iurirr:

LOUDEN A. MGCOUIBRIE AND CHARLES F. RAYDURE, 0F PHILADELPHIA, PENNSYLVANIA.

SHOE FOR THIRD-EAIL ELEGTRIG CARS.

moa /er.

Original application filed April 24:, 1909, Serial No. 492,017.

Specification of Letters Patent.

1910. Serial No. 588,450.

To all whom it may concern:

Be it known that we, LoUDnN A. Mo- Couenns and Cultures F. RAYDURE, both citizens of the United States, residing at the city of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have jointly invented certain new and useful Tmprovements in Shoes for Third-Rail Electric Cars, of which the following is a specification.

@ur present invention has relation to a shoe with a removable contact-piece for third-rail electric railway cars embodying improvements over Letters Patent No. 985,430, dated February 28th, 1911, granted to us and of which this application is a division of the application filed April 24th, 1909, for the said patent; the present application having reference to constructive details in the arrangement of such a shoe, for the above defined purpose.

Our invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, in which" Figure l, is a top or plan view of a thirdrail shoe with a removable upper rail con tact; the said view embracing main features of our present invention. Fig. 2 is a front elevational view of the same. Fig. 3, is a vertical central sectional view on the line 00, as, of Fig. 2, with the electrical connections omitted; and Fig. l, is an end elevational View of the shoe-member showing in detail the removable upper rail contact-piece.

In the drawings a, is a shoe or contactmember and a a supporting-member to which the shoe or contact-member is pivotally attached. These members are arranged so as to be adjustably secured to a plate a forming part of a car-truck frame, not shown.

The shoe-member a, has a central perforated tubular part arranged to provide a bearing to fit between two end perforated tubular parts of said supporting member (4 Formed with the central portion of the shoemember a is a tapering projection a as clearly illustrated in Figs. 3 and t, to be presently described. Through the perforated tubular parts of both members a and 0: is inserted a pin o to form a pivotal connection for the same, as clearly shown in Figs. 1 and 3. The respective ends of the pivot-pin 0?, have openings to receive cotter-pins a and a so that when the cotterpins are removed the pivot-pin a may be readily withdrawn and the shoe-member a, released from the supporting member al The member a is preferably arranged with an upper rear ratcheted surface Fig. 3, to register with a ratcheted plate a intended to be secured to the car-truck frame.

The ratcheted surface of the member a by registering with the ratcheted plate a insures the two to be adjustably secured in required operative position and so held then by tightening bolts (21. and a as clearly shown in Fig. 2, whereby when required the shoe-member a may be quickly and securely brought into proper operative relation with an electrified rail of a road-bed, not shown. The shoe-member a, is recessed in the front portion to receive the rail shoe or contactpiece a held by means of removable bolts. As shown the shoe or contact-piece a is beveled off adjacent to the respective edges, as clearly shown in Fig. 1.

The supporting member a is provided with a blocklike casting Z), having a vertical opening and a chamber 5 provided therein. 6 is a headed bolt partially threaded and vertically extending through the opening 6 and through an opening in the shoe-member a, as shown in Fig. On the threaded portion Z7 of the bolt is applied a nut o to permit in a handy manner the compressing of a coiled spring which encicles the bolt 6 and engages a seatingcap Z), to be presently more fully explained. In case of wear of the contact a the nut b and bolt b provide by manual turnings of the nut on the said bolt through the compressing of the coiled spring 6 to take up such wear. The bolt 6 carrying at the upper end the seating-cap b, and against which at one end engages the helical spring 6 and at the other end the spring has a bearing in a recess 5 of the member a to maintain normally the shoe-member a, under required spring tension with the supporting member (4 to establish and maintain reliable surface contact of the shoemember a, with an electrified rail. The tapering projection a, of the member a or;- tends upward into the chamber 6 of the member a and this chamber is of greater width than the projection. The bottom surface of the supporting member a, is shaped so as to contact with the outer surface of the tubular part on both sides of the chamber Z2 as clearly shown in Fig. 8. By this arrangement wear of the bottom surface of the supporting member a against the tubular part of the member a and pivot-pin (4 in the tubular parts of both members will be equalized so that both members have two real points of bearing contact to insure greater uniformity of action of the shoemember in contact with a live rail and also far more reliable practical results are obtained during such contact. When the contact piece a has become worn by turning the nut 6 on the threaded portion of the bolt 6 within certain limits this is provided for, that is, to the extent of normal movement of the projection a", of the contact-member a, within the chamber 5 of the supporting member a without having to disarrange other parts of either member to accomplish such result.

6 and e are insulated electric wire connections of the shoe-member a. These wires are detachably connected with binding posts 65 and (Z and e and 6 of a plate 6, suitably bolted to the upper portion of the supporting member a, as illustrated in Figs. 1, 2 and 4.

Having thus described the nature and object of our invention, what we claim as new and desire to secure by Letters Patent A shoe for electric-railway cars comprising a horizontal shoe-member provided with a contact piece and a tubulanpart having a vertical tapering projection, a vertical supporting member provided with a chamber into which extends said projection and the chamber of said supporting member of greater width than said projection and the bottom surface of said supporting-member shaped to contact with the outer surface of said tubular part on both sides of said chamher, a pivot extending through said tubularpart and connecting said shoe-member with said supporting-member, means arranged in front of said pivotal connect-ion for maintaining under working tension said members and electrical-connections for the contactpiece of said shoe-member.

In witness whereof we have hereunto set our signatures in the presence of two subscribing witnesses.

LOUDEN A. MOCOUBRIE. CHARLES F. RAYDURE.

'Witnesses THOMAS M. SMITH, ELISABETH A. SHELDRAKE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G.

Images