US1090143A - Draft and buffing appliance for railway-cars. - Google Patents

Description

G. H. FORSYTH.

DRAFT AND BUFFING APPLIANCE FOR RAILWAY CARS.

APPLICATION FILED JUNE 16, 1908.

1,090,143. Patented Mar. 17, 1914.

2 SHEETS-SHEET l.

G. H. FORSYTH.

DRAFT AND BUFPING APPLIANCE FOR RAILWAY CARS.

APPLICATION FILED JUNE 16, 1908.

Patented Mar. 17, 1914.

2 SHEETS-*BHEET 2.

1 ED STATES PATENT OFFICE.

GEORGE E. FORSYTH, OF CHICAGO, ILLINOIS, ASSIGNOR TO WAUGH DRAFT GEAR COMPANY, A CORPORATION OF ILLINOIS.

DRAFT AND BUFFING APPLIANCE FOB RAILWAY- CARS.

Specification of Letters Patent.

Patented Mar. 1'17, 12314.

Application filed June 16, 1908. Serial No. 438,825.

To all whom it may concern:

Be it known that I, GEORGE H.\FORSYTH, a citizen of the United States, residing at Chica 0, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Draft and Buffing Apof a bufling mechanism which transmits the bufling strains directly to a buffer-cushioning device also located in the draw-bar near its rear end and, in the casev of excessive strains, to the main resistance medium of the gear without transmitting such strains through the major portion of the draw-bar itself; to provide a yielding and elastic connection between the draw-bar and bufferstem through which the side movements of the, former are transmitted to the latter; to i'ovide an improved antifriction support or the draw-bar on the hanger; to provide an ad'ustable means for effecting the side swing of the draw-bar from the angular movement of the truck relatively to the carbody; and to effect other improvements which will be apparent from the following description.

y invention, in one practicalform in which the same may be embodied, is illustrated in the accompanying drawings, in which,

'gure 1 is a top plan view of the appliance, 'showin also parts of the car to which it is. applie Fig. 2 is a side elevation. partly in vertical section, of the parts shown in Fig. 1. Figs. 3 and 4, are enlarged crosss'ectional details on the lines 3-3, H, respectively, of Fig. 1. Figs. 5 and 6 are similar enlarged cross-sectional details on the lines 55 and 66, respectively, of Fig. 2.

, Referring to the drawings, 10 designates cure mounted in and through the buffer-beam and (platform casting and has pivotally seto lts forward end by a pivot-pin 12 and a cotter-pin 12 a buffer-plate 13, this latter being backed by a block 14 preferably constituting an integral thickened portion of the buffer-plate and having an inner' face conforming to and adapted to contact with the forward end of the buffer-beam 11 under the extreme inward thrust of the bufferplate.

The draw-bar is made in two sections, a main section 15, the forward end of which has a rectangular ,socket 15", and in rear thereof a round socket 15, and a coupler section comprising the coupler head 16 and coupler shank 17, this latter having a sliding tit in the square socket 15* of the section 15. W1thin the round socket 15 is a coil spring 18 constituting a draw-bar cushioning spring which abuts against the inner end of the con:- pler shank 17 and absorbs buf'fing shocks upon the cou ler head up to a point at which the inner en of the shank abuts against the shoulder portions 15 surrounding the mouth of the socket 15".

The rear end of the section 15 of the drawbar has a pivotal connection through a pivotpin 19 with the usual yoke 20 of the draftrigging, within which yoke are front and rear followers 21 and 22 having convex and concave inner faces, respectively, and a series of interposed roups of fiat spring plates '23, between whici latter are intermediate followers 24; the adjacent faces of adjacent followers being concave and convex, respectively, so as to produce a bending effect upon the spring plates under both draft and buffing strains. The yoke, followers, and springplates together constitute what 1 term herein the draft-rigging The draw-bar section 15, slightly in ad vance of its pivotal point, is vertically offset. as shown in Fig. 2, which offset portion is somewhat widened and formed with a socket or chamber 25 open at its front end. and within which are located a pair of coiled compression springs 96, opposite the forward end of which is a follower-plate 27 having a concave forward face 28 against which abuts the inner rounded end of the buffer-stem '19. The buffer-stem is connected with the chambered portion of the drawbar with capacity fora sliding movement therein by means of a transverse key 29 passing through the inner. end of the bufier-stem and through longitudinal slots 30 formed in the sides of the chamber. A similar connection is employed for preventing displacement of the coupler stem 17 from the drawbar section 15, consisting of a transverse key 31 passed through the coupler stem and through longitudinal slots 32 in the sides of the chambered end of the member 15.

33 designates the usual supporting carryiron for the draw-bar, the same being shown as of I-beam form and having its horizontal section curved on an arc struck from the pivotal center 19 of the draw-bar, the ends of the carry-irons being attached to the car as by the brackets 33. The forward chambered endof thedraw-bar section 15 seats in a saddle 34 directly above the hanger 33, which saddle has depending fore and aft legs 35 in which are journaled a series of rollers 36 that ride on the lower flange of the I-beam hanger 33.

Referring next to the elastic or yieldable connection between the draw-bar and bufferstem whereby lateral swinging movement of the former is transmitted to the latter, 37 designates each of a pair of upstanding projections on the draw-bar section 15 herein shown as located directly above the spring chamber or socket 153", between which are located a pair of oppositely facing socketed followers '38 which confine between them a coiled compression spring 39. It will be observed by reference to Fig. 5. that the ends of the followers 38 project beyond the vertical edges of the lu s 37, as shown at 38 Embracmg the bufi 40 having depending end projections 40 that overlap the front and rear edges of the projections 37, and are centrally channeled to receive the ends 38 of the followers 38. The projections 37 are preferably connected by a tie-bolt 41 that is axially coincident with the spring 39 and that serves totransmit the lateral strains from one projection to the other, distributing the strains between them. From the foregoing it will be.

seen that the lateral swing of the draw-bar eflects, through one of the upstanding projections 37, a thrust upon'the follower mem ber 38 in contact therewith, which latter, through the spring 39, transmits the thrust in an elastic form to vthe opposite follower, the ends 38 of which transmit this lateral thrust to the depending extensions 40 -of the yoke 40, which latter transmits the thrust to the buffer-stem. By this means the side swingof the draw-bar and coupler-head is transmitted in an elastic and yielding manner to the buffer-stem and consequently to the bufler-plate carried at the forward end of the latter, thus relieving the connecting means between the draw-bar and bufierstem of sudden breaking shocks.

The draw-bar and bufler mechanism are er-stem 12 is a yoke tion 42 said connecting chain being joined at its ends to clevises 43 and 44 which, in turn, are pivotally connected to'brackets 45 and 46 secured respectively to the truck- 'frame 47 and draw-bar section 15. To pro vide for an adjustment of the truck connections whichwill afiord varying extents of swing of the draw-bar from the relative angular movement between the truck and car-body, when on curved track, the brackets 45 and 46 are provided with a plurality of pivot- holes 45 and 46 to which the clevises 43 and 44 may be pivoted. Instead ofithese brackets 45 and 46 it is evident that other adjusting means might be employed.

Referring once more to the connection be tween the bufl'er-plate and buffer-stem,'it will be observed by reference to Fig. 1 that the buffer-stem has, near its forward end, a pair of lateral projections 48, between which and the inner face of the buffer-plate on either side of the bufi'er-stemare interposed compression springs 49 operating to maintam the bufi'er-plate substantially normal to the buffer-stem when the car is uncoupled,

V and at the same time permitting freedom of angular movement of the buffer-plate to allow the latter to accommodate itself to possible angular impact of another bufi'erplate.

I claim:

1. [n a draft and bufiing appliance, the combination with a draw-bar capable of lateral swinging movement, of a buffer-plate having a stem also capable of lateral swingmg movement, and a connection between said draw-bar and buffer-stem permitting botha lateral movement of said buffer-stem relatively to, and a bodily lateral movement of said buffer-stem with, said draw-bar.

In a draft and bufling appliance, the if combination with a laterally swinging drawbar and buffer-stem, of a yielding connection therebetween adapted to transmit the lateral movement of the former to the'latter, said connection comprising overlapping ups standing and depending projections from said draw-bar and-bufier-stem, respectively, and an interposed spring member and. interlocking connections between said projections.

3. In a draft and bufling appliance, the

combination with a laterally swinging draw bar and bufienstem, ofa connection there between adapted to transmit the lateral movement of the former to the latter, said connection comprising overlapping upstanding and dependin projections from said draw-bar and bu er-stem, respectively, a

pair of followers, and an interposed spring,

said followers and spring serving to transmit movement between said projections.

l. In a draft and buffing appliance the combination with a draw bar capable oi lateral swinging movement, of a butler plate having a stem also capable of lateral swinging movement, and a yieldable connect-ion between said draw bar and buffer stem permitting both a lateral movement of said buffer stem relative to and a bodily lateral movement of said bufl'er stem with said draw bar, said connection including means to positively limit the extent of such relative lateral movement, substantially as described.

5. In a draft and bufling appliance thecombination with a lateral swinging raw bar and bufi'er stem, of a connection therebetween adapted to transmit the lateral movement of the former to the latter, said connection comprising interengagin ri 'd members carried by the draw bar an bu er stem respectively and providing for limited lateral relative movement, and a spring interposed between said rigid members, substantially as described.

6. In a draft and bufling appliance, the combination. with a lateral swinging draw bar and bufier stem, of a connection there- .bar and buffer stem, of a connection therebetween adapted to transmit the lateral movement of the former to the latter, said connection comprising overlappin upstanding and dependin pro ect1ons om said draw bar and bu er stem respectively, a

pair of followers arranged between the members of one set of IOJGCtiOIlS and interlocking with the mem ers of the other set of pro ections, and a spring interposed between the followers, said followers and spring serving to yieldingly transmit movement between the two sets of projections, substantially as described.

GEORGE H. FORSYTH. Witnesses: V

SAMUEL N. POND,

FREDERICK C. Goonwm.

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