US415309A - Car-coupling - Google Patents

Description

(No Mo M. J. LORR GAR GOUPLING.

No. 415,309. Patented Nov. 19, 1889.

I 10 described, and is intended as an improvement UNITED STATES PATENT OFFICE.

MADISON J. LORRAINE, OF ST. LOUIS,

MISSOURI, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO THE KEYSTONE OAR COUPLER COMPANY, OF ILLINOIS.

.CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 415,309, dated November 19, 1889.

Application filed September 17, 1888. Serial No. 285,607. (No model.)

T all whom it may concern:

Be it known that I, MADIsoN J. LORRAINE, a citizen of the United States, and a resident of the city of St. Louis, in the State of Missonri, have invented a new and useful Improvement in Oar-Couplings, of which the following is a full, clear, and exact description. My invention consists in the construction and novel combination of parts as hereinafter on what is known as the M. O. B. type of coupler, and particularly on what is known as the Dowling coupler.

Figure l is a plan, partly in section, of my improved coupler. Fig. 2 is a plan of the knuckle. Fig. 3 is a horizontal section of the I draw-head. Fig. 4 is a vertical longitudinal section through the line 4 l of Fig. 1. Fig. 5 is an elevation of the locking-pin. Fig. (5 is a bottom view of the locking-pin. Fig. 7 is a plan, partlyin section, of the Dowling coupler.

Similar letters of reference denote identical parts.

Referring to the drawings, (1, represents the knuckle, and b the draw-head, which are designed to be attached together.

Fig.7 represents the Dowling coupler as it is now manufactured and in service. In this coupler the knuckle is attached to the draw- 0 head and rotates at 00 and is locked at .2. In this case the knuckle can be considered as a lever, with the fulcrum at 00, and the mass to be moved at Therefore the forward portion (marked a, Fig. 7) is the long endof 3 5 the lever, and consequently any movement of its shorter end is greatly increased at the point marked y, and, as no obstruction to this and further lateral movement is placed to right of the knuckle and above the fulcrum 4.0 00, the knuckle has also considerable lateral play to the right, occasioned by the necessary looseness to allow the parts to work freely together. The greater the wear on the lockin g mechanism of the coupler the greater will both the rotary and lateral movement of the knuckle be. In consequence of this construction and the location of the fulcrum and locking mechanism the Dowling knuckle under heavy tension pulls out until its coup 5o ling-face at 3 is about in the position shown by the dotted lines, and as a result, when two are coupled together, these faces present inclined surfaces to each other and slip out of engagement laterally and the cars come uncoupled without the coupler being unlocked. This has occurred frequently in service. My improvement is intended to obviate this diiiiculty, and is accomplished by placing the fulcrum of the lever farther forward and to the left, as seen in Fig. 1.

Instead of carrying the pivot portion entirely through the Width of. the draw-head, as in Fig. 7, I construct the circular bosses c 0 extending for a limited distance only from either ear of the draw-head. (See Fig. 4.) These circular bosses are united to the Wall of the draw-head on the right. Suitable bearings c c are provided in the hub of the knuckle for these bosses to rotate in. Shoulders d d are extended for a limited distance from either shell of the draw-head, and the shoulders (Z dare constructed on the knuckle. The shoulders cl d thus act to prevent the lateral movement of the knuckle by bearingagainst the bosses c c on the right and against the shoulders d d on the left. The stops g g limit the inward rotary movement of the knuckle. These stops can be placed farther to the right, near the summit of the arcs forming the opposed curved faces of the draw-head and knuckle, if desired.

The curved beads e e and e c .serve to assist the other bearings to retain the knuckle in place.

Figs. 5 and 6, and f, Fig. 4, show the special form of locking-pin used in this construction. The upper part of this pin is square, or nearly so. The lower part of the pin is much smaller than the upper and extends through an opening in the lower shell of draw-head, and is 0 provided with a cross-pin, so it cannot be withdrawn. The locking-pin is cut away about intermediate of its length, forming a square shoulder, which rests upon the knuckle in the groove f when the knuckle is open, 5 and falls in front of the knuckle when it is closed. There are no inclines on this pin or on the lever-arm or knuckle.

I do not desire to claim, broadly, the difierent features of this improvement, as I have already claimed them in other applications; but What I do desire to claim is their peculiar application and adaptation to each other, as herein set forth.

I claim- 1. In a car-coupler, the knuckle a, provided with the bearings c c and shoulders d d, in combination with the draw-head Z), provided with the bosses c c and shoulders d d, all

located and constructed substantially as described, for the purposes set forth.

2. In a car-coupler provided with an attached pivoted knuckle a, the shoulders d d, and curved beads e e, in combination with the shoulders d cl and curved beads e e, substantially as described, for the purpose set forth.

MADISON J. LORRAINE.

Witnesses:

PATRICK B. RIDDLY, ALBERT GERsT.

Images