US1683822A - Shock-absorbing mechanism - Google Patents

Description

Spt, 1.1, 1923 s, B. l-msELTnma4 sHocK ABsoRBING MEcHANIsu Filed Feb. 28, 1927 Inventar @15gg/Liam@ Wai/16.5.5 Y

Patented Sept. 11,19278.

AUNITED STATES 1,683,822 PATENT OFFICE; l

srAoY B. I'IASELIINE, OF CHICAGO, ILLINOIS, Assrenon To w. H. MINER, INO., or

CHICAGO, ILLINOIS, A CORPORATION or DELAWARE.`

snoek-ABSORBING MEcHANIsM.

Application led February 28, 1927.` Serial No` 171,417.`

This invention relatesto improvements in shock absorbing mechanisms.

One object of the invention is to provide a tandem springshock absorbing mechanism of simple design comprising a minimum number of partsand providing an exceedingly rugged construction, presenting a heavy column load sustaining element limiting the compression of the mechanism.

Another object of the invention is to provide a tandem springr shock absorbing mechanism, including front and rear main follower casings for transmitting the actuating pressure to rear and front intermediate followers to effect compression in tandem of spring resistance' elements, wherein `the inner ends of the main follower casings are adapted to abut throughout, to present a solid column of great strength to limit Vmovement of the parts of the mechanism when the same is fully compressed and transmit the actuating force to the `draft sills, preventing the spring resistance elements from being unduly compressed.`

` A more specific objectofthe invention is y to provide a spring shock absorbing mechanism of thecharacter indicated, including duplicate front and'rear main follower casings'; duplicate intermediate follower members; and tandem arranged spring resistance elements, wherein the intermediate follower members are telescoped within the ,follower casings and the front and rear intermediate followers co-operate with abutments on the rear and front main follower casings respectively to compress the spring resistance meansin tandem.

` Other objects of the invention will'more fully and clearly appearlfrom the descriptionl and claims hereinafter. following.

ln the drawings, forming a part of this specification, Figure 1 is a horizontal longitudinal sectional view ofaportion of a railway draft rigging, illustratmgmy improvcments in connectiontherewith.I Figure 2 is avertical transversesectional view corresponding substantially tothe line 2-2 of Figure l. Figure Sis a diagonal transverse sectional view corresponding substantially to the line 3--3 of Figure 2. And Figure 4 is a front end elevational viewnof one of the .intermediate followers employed inconnection with my improved shock absorbing mechamsm. v v

ln'said drawings, 10-10 indicate channel- -site sides thereof adapted tenerme shaped center or draft sills ofva railway car underframe, to the inner sides of which are secured front stop lugs 11--11 and rear stop lugs 12 12. The inner end of the drawbar is designated by 13, to which is operatively connected a yoke14; of well known form'.

The shock absorbing mechanism proper isV disposed within the yoke,- and the yoke and the parts therewithin are supported by a detahable saddle plate 15 fixed to the draft s1 s. Y

My improved shock absorbing Vmechanism comprises, broadly: Front and rear main follower casings A-A .front and rear intermediate .followers B--B; and tandem arranged spring resistance elements C-C.

- VTheV front and rear main follower casings A are of similar design, each being in the form of ak rectangular hollow-boX-lilre member having longitudinally disposed vertical side walls 11i- 16, longitudinally'disposed a transverse outer end wall 18. The end wall l18 of the casing is laterallyextended beyond the side walls thereof `as clearly shown in Figures 1 and 2, thereby presenting'a relatively large bearing face adapted to co-operate with the corresponding stop lugs. The casing A and the end wall 18 `thereof are reinforced by horizontal ribs 19. The endA posed in alignment with those diagonal corners ofthe rear followercasing A which do not carrythe stop lugs. i 1 Y The intermediate followers B are'of similar designyeach comprising a body portion 21 having `longitudinally projecting arms 22- at one side thereof. The arms` 22 are shoul-` dered,` as indicated at 23 and theouter ends of the same are'` adapted to bear on "the stop lugs 20 of one of the casings A. Each intermediate followerV B is also cut awaygat two oppositely diagonal sides as indicated at 24-to provide` clearance for the arms 22 ofthe other intermediate follower. Each intermediate follower B is also .provided with continuous iianges 25--25 on diagonally, oppoly near horizontal top and bottom walls 17-17, Iand Y on the flanges and the stop shoulders 23 of the arms ofthe other intermediate follow* er B. The two intermediate followers B are interlaced so that one of the same forms a fr`ont intermediate follower and the other a rear intermediate follower. The front intermediate follower B has the arms 22 there` of extending rearwardly and bearing on the stop lugs. :20 of the rear fasing Aand the rear intermediate follower B has the arms 22 thereof extending forwardly and bearing on the stop lugs 20 ofthe front follower casing A, It will be evident that the two intermediate followers B are thus mounted for movement in unison respectively vwith the front and rearcasings A. Each vof the intermediate followers B has a flat outer end face adapted to .bear on the inner end of one of the members of the tandem arranged springs C. The tandem arranged springs C comprise front and rear units, each including a relatively lightinner coil and a heavier outer coil. `The front springV unit C is interposed between the end wall'lS of the front follower casing A and` the front intermediate spring follower B and the rear spring unit is interposed between the rear intermediate follower B and the rear end wall 18 of the rear main follower casing A. Both of the spring nunits C are housed entirely within the casings A.

As clearly shown in Figure 1, the inner ends of the oasings A are spaced apart a distance equal to the `permissible compression stroke of the mechanism so that when the gear is fully compressed, the inner ends of the casings will abut along the edges of the top, bottom andside walls, thereby presenting in effect a continuous ycolumn element adapted to tansmit the actuating force directly to the stop lugs on the draft sills and rear casing A toward each other and moving the front intermediate follower and the front end wall 18 of the front casing A toward each other, compressing both members of the spring resistance means in tandem. The compression stroke will continue either until the actuating force is reducd, or movement of the casings A `relatively to each other is limite'd as hereinbefore described by their inner ends coming into abutment. 'When lthe actuating pressure is lreduced during release, the spring resistance elements C will effect restoration of all of the parts of the mechanismto the normal position of the parts illustrated in Figure 1.`

While I have herein shown and described what I now consider the preferred manner of -carrying out the invention, the same is merely illustrative, and 1 contemplate all changes and.modifications that come within the scope of the claims appended hereto.

I claim: y

1. 1n a spring shock absorbing mechanism, the combination with front and rear main follower casings having outer end walls functioning as front and rear main followers and open inner ends; of front and rear intermediate followers telcscopc'd within and com pletely encircled by said casings, said `rcar and front intermediate followers being movable with the front main follower casing and the rear main follower casing respectively; and .tandem arranged spring resistance ele- 1nents, one of the members of which is intcrposed betweenthe end wall of the yfront follower casing andthe front intermediate follower, and theother of which is interposed between the rear intermediate followe and the end wall of the rear main follower casincf.

VIn a spring shock absorbing mechanism, .the combination with front and rear main follower casings having front and rear main follower elements formed integral therewith, said casings being relatively niiovable toward and away from eachother and adapted to rsaid rear main and rear intermediate followers.

3. In a tandem spring shock absorbing mechanism, the combination with front and rear casmgsrclatively movahletoward and away from each other; of front and rear Aspring resistance elements within said cas` ings; and separate front and, rear intermediate followers operatively associated with said rear and front casings respectively and bearing respectively on ysaid front and rear springs, said intermediate followers bein g tclescoped within and completely encircled by` `arms spanning the front intermediate follower and bearing on the front casingg and lfrom aiuti-car spline. resistance ,elmenta IUI) l ll) ius Within said front and rear oasings and boaring respectively on said front and rear intermediate followers.

5. In a tandem shock absorbing mechanism, the combination with front and rear rectangular casings having stop shoulders'at two diagonally opposite corners thereof; of front and rear intermediate followers, each having arms at two diagonal Corners thereof and having the remaining diagonal corners out away, the arms of each of said interme diate followers spanning the other intermediate follower at said eut away corners thereof, the arms of the front intermediate follower bearing on the stop shoulders of said rear casing and the arms of said rear intermediate follower bearing on the stop shoulders of the front easing; and front and rear resistance means within said front and rear oasings and bearing on the front and rear intermediate followers respectively.

6. In a tandem shock absorbing mechanism, the combination with front and rear follower casings having outer end walls and side walls and openat their inner opposed ends, the inner ends being adapted to directly engage around their entire peripheries at the end of a full compression strokeyof separa-te front and rear intermediate followers teleseoped within the front and reareasings; means extending between the front interme- Vdiate follower to the interior of the rear fole lower easing for actuating the front intermediate follower in unison with the rear easing; means extending between the rear intermeN diate follower and the interior of the front easing for actuating the rear intermediate follower' in unison with the front easing; and cushioning means interposed between each intermediate follower and the correspond ing follower easing within which itis tele scoped. l i e In witness that I claim the foregoing I have hereunto subscribed my name this 16th day of February 1927.

STACY B. HASELTINE.

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