US449196A - Electric-railway conduit - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

P. 0. BLAOKWELL.

ELECTRIC RAILWAY GONDUIT.

N0.449,196. Patented Mar. 31, 1891.

WITNESSES (No Model.) 2 Sheets-Sheet 2. P. 0. BLAGKWELL. ELECTRIC RAILWAY CONDITIT.

N0. 449,196. Patented Mar. 31,1891.

WITNESSES INVENTOR W. WW 7 672i am 7% Miran Sterne Arnnr rricn.

FRANCIS O. BLACKIVELL, OF l E\V YORK, N. Y., ASSIGNOR TO THE THOMSON- .IIOUS'ION ELECTRIC COMPANY, OF CONNECTICUT.

ELECTRIC-=RAILVVAY CONDUi-T.

SPECIFICATION forming part of Letters Patent No. 449,196, dated March 31, 1891.

Application filed March 5, 1889. Serial No. 301,851. (No model.)

To aZZ whom it may concern:

Be it known that I, FRANCIS O. BLAOKWELL, a citizen of the United States, residing at New York, in the county of New York, State of New York, have invented certain new and useful Improvements in Electric-Railway Conduits, of which the following is a specification. My invention relates to electric railways; and it consists of certain devices for supportio ing the insulated supply-conductor hereinafter more particularly specified.

My invention is illustrated in the accompanying drawings, wherein- Figure l is an end view of the conduit, show- 5 ing the slot-rails and supply-conductors in cross-section. Fig. 2 is an enlarged front view of the supporting-clamp; and Fig. 3 is a top view of the same,showing the insulator, the extension-piece, and the conductor in dotted lines.

A represents a conduit, which in this instance consists of a series of transverse yokes E and the inclined slot-rails C C.

D is a clamp, which rests at its lower end upon the conduit, and has side flanges E E, which hook around the yoke, thereby holding the clamp in place. It is usually made of two metallic castings of other clamping faces, which may be placed in position, embracing the yoke, and then secured together by any suitable fastening device-as, for instance, bolt F passing through the lugs ff inside the conduit. The clamp fits the yoke snugly, so as not to clog the drainage in the lower part of the conduit, and extends upwardly and forwardly, so that the supply-conductor is in the upper part of the conduit.

G is'an insulator, of porcelain or similar non-combustible material, having its rear end beveled, as at h, to correspond with the inclined slot-rail, and secured in a holder formed by the jaws g g upon the clamp, which, when bolted together, grip the insulator tightly.

I is a supply-conductor, which is connected to the clamp through the insulator and the intermediate metallic extension-piece H, which is attached to the insulator and embraces a lug J 011 the rear side of the conductor.

By my invention the use of bolts or rivets is almost entirely dispensed with, for by the single bolt '1? the clamp is secured firmly to the yoke, and the insulator, in which the piece H will previously have been scaled, is gripped by the jaws 99', so that all the parts are ready for the attachment of the supply-conductor.

I claim as my invention 1. The combination, in an electric-railway conduit, of the transverse yoke and slot-rails with a clamp having clam pi rig-faces engaging the yoke and an insulated supply-conductor attached to the clamp.

2. The combination, in an electric-railway conduit, of a transverse yoke and slot-rails with a clamp having clamping-faces engaging said yoke and an insulated supply-conductor supported by the clamp in the upper part of the conduit.

3. The combination, in an electric-railway conduit, of the transverse yoke and slot-rails with an upwardly-projecting metallic clamp having flanges engaging said yoke and a supply-conductor supported by but insulated from said clamp.

4:. The combination, in an electric railway, of the supply-conductor, the insulator, and the metallic clamp to which the supply-conductor is secured and furnishing means for attaching it to a suitable support, said clamp consisting of sections adapted to embrace the support, and a fastening device for holding said sections in place.

' 5. The'combination, in an electric-railway conduit, of the transverse yoke and slot-rails with the clamp having clamping-faces engaging said yoke made in sections, fastening devices holding said sections together when in place, and an insulated supply-conductor supported by said clamp. I

6. The combination, in an electric-railway conduit, of a clamp resting at its lower end upon the conduit and provided with side flanges holding it in position and an insulated conductor supported by the clamp.

7. The combination, in an electric railway, of a supply conduct-or with a clamp made in sections having clamping-faces engaging with a suitable support, the said sections when in place forming a holder for the supply-conductor.

8. The combination, in an electric railway, of a support, a supply-conductor, and an in termediate clamp with a common fastening device securing both the clamp to the support and the conductor to the clamp.

9. The combination, in an electric railway, of a conduit and a supply-conductor with a 5 holder embracing an insulator connected to the supply-conductor and having at its lower end a clamp attachment to the conduit.

10. The combination,in an electric-railway conduit, of the transverse yoke, the slot-rail,

10 and supply-conductor with a metallic holder 15 of the inclined slot-rail with aninsulator beveled to correspond with the slot-rail and the supply-conductor connected to the insulator.

12. In an electric railway, the combination of the supply-conductor with the porcelain or similar non-combustible insulator and a metallic extension from the insulator, embracing a lug upon the supply-conductor.

13. The combination, in an electric-railway conduit, of the clamp D, having clampingfaces engaging the conduit, the insulator G, and the supply-conductor.

FRANCIS O.

Witnesses.

RoBT. W. BLAcKWELL, H. D. HoTcHKIss.

BLACIUVELL.

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