US1094792A - Draft-gear for cars. - Google Patents

Description

G. T. JOHNSON. DRAFT GEAR FOR CARS. APPLICATION FILED MAR. 10, 1913.

Patented Apr 28, 1914.

WITNESSES A Home in Fig. 2.

.UEHTED STATE% FATE T @FFTQE.

GEORGE '1. JOHNSON, OF COLUMBUS, OHIO, ASSIGNOR TO THE BUCKEYE ST ZEL CASTINGS 00., OF COLUMBUS, OHIO.

DRAFT-GEAR FOR CARS.

Specification of Letters Patent.

' Patented Apr. 28, 19M.

Application filed March 10, 1913. Serial No. 753,371.

To all whom it may concern Be t known that I, GEORGE T. JOHNSON,

of Columbus, in the county of: Franklin and in draft gears for cars, the object being to improve the means for transmitting the buffing and pulling stresses to the draft sills of the car, and it consists in the details'of construction and combinations of, parts as will be more fully explained and pointed out inv the claims.

In the accompanying drawings, Figure 1 is a view in top plan, partly in section, showing my improvement applied to the center or draft sills of a car; Fig. 2 is a view in perspective of the rear end of the yoke; Fig. 3 is a view similar to Fig. 1 of a modified construction and Fig. l is a view in perspective of the front end of the yoke shown 1. and 2 represent the center or draft sills of the car. The shock absorbing means may be of any preferred construction either of the friction type or springs, and they are located between the followers 3 and 4:. These followers 3 and 4, form end abutments for the shock absorbing means and are limited as to movement in the direction of the draft and buffing strains by the cheek castings 5 and 5. The cheek castings 5 form abutments for the front follower 3 and transmit the pulling stresses to the draft sills, while the rear cheek castings 5, form abutment for the rear follower 4, and transmit the bufiing stresses to the side sills. The rear castings 5 are preferably connected by an integral member 5 located in rear of, but in the horizontal plane of movement of the draft yoke 6. This yoke is formed in a single integral casting composed of parallel top and bottom members, a rear member having a straight flat front face and a curved rear face, and a hood 7 at its front end. This hood is substantially the same shape in cross section as the butt end of a car coupler 8, to receive the latter, but is of slightly greater sectional area than the butt of the coupler so as to permit of some movement of the coupler in the yoke. This yoke straddles I both followers 3 and 4 as shown inFig. 1 and the shock absorbing means rests within the yoke, with its ends bearing against the adjacent faces of the followers, and normally holds the latter in contact with their respective cheek castings 5 and 5*.

The rear end ofthe draw or coupler bar rests within the hood 7 at the front end of ,the yoke, and the side members of the hood 7 of the yoke, are provided with longitudinal slots for the passage of the key 9. 'The butt or rear end of the draft or coupler bar is loosely mounted in the hood of the yoke, and is provided with a transverse slot for the passage of the key 9, which, as previously explained also passes through the slots in the side members of the hood. The key 9 fits snugly within the slot in the draft or coupler bar, but is of less width than the length of the slots in the side wings of the hood, so as to permit the coupler bar to have a longitudinal movement rearwardly within the hood and independent of the yoke.

The rear follower is in advance of the rear end 10 of the yoke'with its ends hearing against the cheek castings 5% The front follower 3, passes through the yoke at the rear of the hood with its ends bearing against the cheek castings 5 and in position go be engaged by the rear end of the coupler The yoke is provided adjacent its rear end with two pairs of integral laterally projecting shoulders 11 which latter overhang the cheek castings 5, and the extreme rear end of the yoke rests but slightly in advance of the member 5 connecting the cheeks 5. i

In the operation of the parts a pull on the draw bar or coupler is transmitted through the key 9 directly to the yoke 6 and from the latter will be carried forwardly with the yoke, thus compressing the shock absorbing de-' vices located intermediate the followers. As the front follower 3 bears'against the rear of the cheek castings, it is held by the latter against forward'movement. In buffing the "rear end of the draw bar 8 coming in contact with the front follower forces the same .rearwardly thus'compressing the shock absorbing nieansagainst the rear follower which as before explained is held against rearward movement by the cheek castings to the rearfollower i, which 5. The drew bar has a longitudinal movement within the hooded end of the yoke a distance equal to the difierenoe between the length of the slots in the side Wings of the hood of the yoke and the Width of the key 9, so that the butling strains are transmitted direct to the springs or other shock absorbing means and not normally through the yoke, the latter remeininget rest and prevented from rearward moven'ient byithe en gagement with the shoulders 11 thereon with be integral with the top and bottom members 6 and 7 of the hood as shown in Figs. 3 and 4:; As shown in Fig. 3, these shoulders 11 are located in advance of the cheek castings 5 and positively prevent a rearward movement of the yoke under butting stresses.

By locating the shoulders in pairs on the upper and lower members of the yoke, and having these shoulders abut against stops carried by the side sills, any stresses in Will be borne evenly tributed by the to buliing that may be ti members of the yoke s i As shown in i igs, 1 so freely in elongated slots draft sills.

Having :tully descri e I claim as new and desire to tem-Patent, is

In 'a draft gear for ears ti" a pair of oppositely dispose a yoke comprising top end rear end and hooded i being; provided adjacent pairs of oppositely disposei pair projecting llatere'tly member of the yo e and the jeoting laterally from the lower J.

' said yoke and all of them adapted to the said abutment-s.

In testimony whereof,

specification in the oresente ing Witnesses,

Witnesses:

VJ. o. BENNETT? R. L. lines Y.

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