US755296A - Draft-rigging. - Google Patents

Description

No. 755,296. PATENTED MAR. 2z, 1904.

' J. A. HINSON.v

DRAFT RIGGING.'

APPLICATION FILED JUNE 24,1903` N0 MODEL.

E192 1 '3 111-' C! I 1,5'

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Patented Marehv22, 1904.

,PATENT OFFICE.

JAMES A. HINSON, .OF CHICAGO, ILLINOIS.

DRAFT-HIGGINS.

SPECIFICATION forming part of Letters Patent No.y 755,296, dated March 22, 1904.

Application led J' une 24, 1903.

To all whom it may concern:

Be it known that I, JAMES'AVHINSON, of Chicago, in the county of Cook and State of Illinois, have .invented certain new and useful Improvements in Draft-Rigging; and I do hereby declare that the following isa full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to improvements in draw-bar draft-rigging for car-couplers, and refers more specifically to devices located between the draw-bar and the draft-sills for taking up or absorbing shocks transmitted to the draw-bar in the tractive use of the car and during the operations of coupling and also for` lessening the recoil of the parts under the action of the spring or springs placed under tension. f

As shown in the drawings, Figure l is a top plan view, partially in section, of a draft-rigging embodying my invention. Fig. 2 is a longitudinal section thereof, takenon line 2 2 lof Fig. 1. Fig. 3 is a transverse section taken On line 3 3 of Fig. 2.

As shown in the drawings, A A designate draft-sills, which are herein shown as made offlanged metal bars, C the drawbar of the coupler, and C the yoke thereof, located between said draft-sills.

D D designate follower plates or bars,'which extend transversely through the draw-bar yoke and engage at their ends inwardly-opening pocketsV formed in draft-plates E E, which arie attached to the inner faces of the drafts1 s.

F F designate inner and outer coiled eX Serial No. 162,859. (No model.)

which are s'oconstructed as' toembody in the parts thereof friction-producing devices which supplement the action of the springs to resist 4the'bufling and draftthrusts of the draw-bar.

Said springs, as herein shown, consistof two compoundpU-shaped springs G G', each made up of a number of separate flat leaves. One of said compound springs-the spring G in the present instance-flares outwardly at its open end, While the'arms of the otherA compound spring Gr incline toward each other and iit lwithin the arms of the larger or outer spring and bear with their outer faces against the inner faces of the arms of the outer spring.

The leaves which constitute each of said ing up the spring @rl-that is to say, the`shortest leaf of said spring is the inside leaf, while the longest leaf is the outside leaf.

outer compound spring G has close frictional bearing with the outer faces of the arms of the longest leaf of the inner spring G,wl1ere by when the springs are closed together they friction between said leavesof the-springs-act toresist said closing movement.

The lsprings G Gr are seated' at, their closed `ends in curved seats formed in the inner faces of the follower-bars l), whereby said springs are held laterally in place.V Said springs are Vheld vertically in place between the arms of .the yoke C. their ends againstblocksff, which are curved `on their outerv faces to ft the inner curved The coiled springs F F bear at faces of theinnermost leaves of the springs. If desired, said'blocks j' may be made integral with the parts of the follower-bars in which are formed the seats for said springs, inwhich event the springswould be made slightly narrower relatively to the height of the draw-bar yoke. Endwise movement of the draw-bar in either direction acts to close said springs Gr G together and at the same time compress the The inner p faces of the-arms of the longest leaf of the springs F F', and when the draft or bufing strain is released said springs F F' act to restore the parts of the draft-rigging to their normal or inactive position.

By reason of the outwardlyvflaring form of the arms of the spring G and the complemental inwardly-turned arrangement of the arms of the spring G', which fit between the Haring arms of the spring G, it will be seen that when the said springs are closed together the inner spring acts as a wedge to open the outer spring, while the resistance of the outer spring acts in a manner to close the inner spring. Thus the larger and smaller springs act mutually to resist the draft and bung thrusts of the draw-bar. Such draft and buflng thrusts of the draw-bar are not only resisted by the resilient action of the springs G G', supplementing the action of the springs F F', before referred to, but are resisted also by the friction which is developed between the contacting faces of the inner and outer springs G Gr, as well as by the interacting friction developed between the several leaves of each of the springs G G during the opening and closing movements of said springs-that is to say, owing to the form of the springs, when the arms of said springs are moved outwardly and inwardly, respectively, due to the closing of the springs together, the adjacent leaves of each spring shift relatively to each other, and thereby produce a friction which is exerted to resist the closing movements of the springs due to the draft and bufng strains of the draw-bar.

It is obvious that the draft-rigging herein described may be made to possess enormous resisting power, as there is ample space for adding leaves to the springs to produce the required spring strength. Moreover, by reason of the frictional contact between the two springs Gr G and between the leaves or members of each spring said springs overcome largely the recoil of the parts and the injury due to such recoil.

rIhe springs G G may be supplemented by a spring or springs located outside of or surrounding the same-such, for instance, as

`shown in my prior application for United States Letters Patent, Serial No. 152,345, filed on the 13th day of April, 1903. In such suggested construction the springs G Gr correspond to the wedge members shown in said prior application, but differ from said wedge members in that they are spring wedge members. Other modifications will occur to those skilled in the art, and I do not wish to be limited to the illustrated construction except as hereinafter madethe subject of specific claims.

I claim as my invention- 1. In a draft-rigging the combination with a draw-bar and its yoke, of two springs which are closed together by the draft and buiing thrusts of the draw-bar, said springs having inclined, coacting, frictional surfaces and each comprising a plurality of leaves which are relatively shiftable when placed under stress.

2. In a draft-rigging, the combination with a draw-bar and its yoke, of two interacting wedge-shaped springs which are closed together by the drafting and bufiing thrusts of the draw-bar, said springs each comprising a plurality of leaves which are relatively shiftable with respect to each other when the springs are placed under tension.

3. In a draft-rigging, the combination with a draw-bar and its yoke, of two U-shaped springs, one of which is made Haring at its open end to receive the arms of the other spring and means whereby said springs are closed together during the bufing and draft thrusts of the draw-bar.

4. In adraft-rigging, the combination with the draw-bar and its yoke, of two U-shaped springs, one of which is made flaring at its open end to receive the arms of the other spring, said springs each comprising a plurality of separate leaves which are relatively shiftable during the opening and closing movements of said springs.

5. In a draft-rigging, the combination with the draw-bar and its yoke, of two U-shaped springs, one of which is made flaring at its open end to receive the arms of the other spring, said springs each comprising a plurality of separate leaves which are relatively shiftable during the opening and closing move-v ments of said spring, the leaves which make up each spring being made of varying lengths and the longer leaf of the inside spring being located on the outside of said spring while the longer leaf of the larger or outside spring is located on the inner side of said spring to frictionally engage said outer longer leaf of the inner spring.

6. In adraft-rigging, the vcombination with a draw-bar, and its yoke, draft-plates, follower-bars extending through the yoke and engaging pockets in said draft-plates, of two U-shaped springs seated at their closed ends against the follower-bars, one of said springs being made Haring at its open end to receive the arms of the other spring.

7 In a draft-rigging, the combination with a draw-bar, and its yoke, draft-plates, follower-bars extending through the yoke and engaging pockets in said draft-plates, of two U- shaped springs seated at their closed ends against the follower-bars, one of said springs being made flaring at its open end to receive the arms of the other spring, each spring be" ing made of a plurality of leaves which are relatively shiftable during the opening and closing movements of the springs. v

8. In a draft-rigging, the combination with a draw-bar, and its yoke, draft-plates, follower-bars extending through the yoke and engaging pockets 1n said draft-plates, of two IOO IOS

IIQ

U-shaped springs seated at their closed ends my inVentionI aix my signature, in presence against the follower-bars, one of said springs of tWo Witnesses, this 20th day ofJune, A. D. IO

being made iiaring at its open end to receive 1903. Y

the arms of the fother spring, and a coiled '5 spring located between the arms of the inner U-shaped spring and acting at its ends against Witnesses:

the closed parts of said springs. WILLIAM L. HALL,

In testimony that I claim the foregoing as GEORGE R. VVILKINS.

JAMES A. HINSON.

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