US1637099A - Draft rigging - Google Patents

Description

July 26,1927.

D. S. BARROWS DRAFT RTGGING Filed Jan. 30, 1925 2 Sheets-Sheet 1 Juy 26, 192m 1,637,099

D. S. BARROWS DRAFT RIGGING Filed Jan. 5o, 1925 2 sheets-sheet '2 Patented July 26, 19327'.

Lanos-a Price.

DONALD S. BARROWS, F ROCHESTER, NEW l, ASSIGNOR T0 THE SYMINGTON COMPANY, 0F NEW YORK, N. Y.,

A. RPORATION 0F MARYLAND.

' naam mecano.

Application tiled January My invention relates to draft rigging for railway cars and more particularly to mechanism for operatively connecting the coupler to the yoke'member and allowing a desired amount of angular motion therebetween in all directions.

The principal feature of my invention, generally considered, is to provide ay universal connection between the coupler and yoke members of railway draft rigging while Y preventing undue or undesired angling motion therebetween.

An object'of the invention is to provide a connection between the coupler and yoke of railway draft rigging in which a substantially universal motion therebetween is permitted by forming interengaging substantially spherical surfaces on each member adapted to provide bearings therebetween when in service.

Another object of the invention is the provision of an improved connection between the coupler and yoke in railway draft rigging whereby substantially universal motion therebetween is permitted, such object being accomplished by forming a pocket in the butt of the coupler stem, said pocket having oppositely disposed walls formed with sub stantially spherical depressions therein, said depressions being substantially concentric, and a block member with concentric bearing surfaces fitting said pocket provided between said walls, and a key extending between said block and yoke for connecting the coupler and yoke and transmitting draft forces therebetween.

transmitted through the spherical block and' key and buiiing forces therebetween are transmitted directly from the spherical butt to theftransverse wall of the yoke.

)ther objects and advantages of the invention relating to the construction of the sev- 30, 1925. Serial- N0. 5,'3'63.

eral elements, together with their particular arrangement and combination will become apparent as the description proceeds.

ln the drawings illustrating `my invention, the scope whereof is pointed out in the claims: f

Figure 1 is a top plan view, partially in horizontal section, illustrating a coupler and yoke member constructed and connected in accordance withmy present invention.

Figure 2 is a side view, partly in vertical longitudinal section, of the construction shown in Figure 1.

Figure 3 1s a view similar to Figure 1 showing a modified construction.

Figure 4 is a side view, with parts in vertical longitudinal section, of the construction shown in Figure 3. y

Referring to thedrawings in which similar reference characters designate corresponding parts in the several views, I have shown the coupler 1 connected to a yoke 2 by means of a transversely extending key 8. The coupler 1 is formed with a stem or butt portion, the outer surface 4 of the rear wall thereof being formed substantially spherical and bearing against a transverse portion 5 of the yoke. The transverse portion 5 in the present embodiment is shown as integral with the forwardly extending arms 6 and 7 of the yoke 2 and the front face 8 thereof is concave and substantially spherical and preferably accurately fits the rear, surface 4 of the coupler 1 so that angling or substantially universal movement between thev coupler and yoke is permitted by these engaglng faces. The rear portion of the yoke 2 (not shown) may be of any ordinary construction.

The stem or butt portion of the coupler 1 is formed with a pocket 9 into which is fitted a block 1l. This pocket 9 is formed between the upper and lower walls 12 and 13, respectively, ot' the coupler, which walls are substantially horizontal and the rearward and forward walls 14 and 15respectively, of said coupler butt, said latter walls being provided with concave substantially spherical inner surfaces 16 and 17, respectively. These inner surfaces are preferably concentric withthe spherical surfaces 4 and 8 on the coupler butt and yoke, respectively. The block 11 fitting in the coupler pocket9 is formed with upper and lower flat Surfaces 18 and 19, respectively, and forward and rearward convex substantially spherical surfaces 21 and 22, respectively. The flat surfaces 18 and 19 on the block 11 are spaced slightly from the cooperatin upper and lower walls of the coupler poc et to permit a. slight amount of play or motion therebetween, whereas the spherical surfaces 21 and 22 on the block are embraced between the complementary spherical surfaces 16 and -17 of the pocket with little or no play therebetween. As' the spherical surfaces on the block are substantially concentric with the complementary surfaces in the pocket, a desir amount of angling or pivotal motion between the coupler and block is permitted in all directions with substantially no longitudinal movement therebewteen.

The block 11 is rovided with a transverse slot 23 through w ich extends the key 3 for connecting the cou ler and yoke. The yoke is provided with orwardly extending webs or loop portions 24 and 25 slotted at 26 and 27, respectively, for receiving the key 3. It will be seen from an inspection of Figure 1, that little or. no lost motion is provided hetween the block 11 and the key 3 and between the key 3 and the yoke 2,so that draft forces are transmitted from the coupler to the yoke through the intervening block 1l and key 3, whereas when butiing forces are applied to the coupler, the key 3 and block 11 are relieved of strain by the direct engagement of the spherical end ot' the coupler stem with the transverse bridge portion 5 of the yoke.

For supporting the coupler and yoke in approximate alinement, the key extends through slots 28 in the draft sills 29 and through corresponding slots 31 in the cheek plates 32.

The arms 6 and 7 of the yoke 2 extend forwardly beyond the transverse portion 5 to form transverse walls or tianges 33 and 34 connecting the wall portions 24 and 25 of the yoke and forming a box-like pocket into which ts the coupler butt, the walls 24 and 25 serving to limit horizontal angling of the coupler with respect to the yoke, whereas the walls or webs 33 and 34 serve as additional meansl for limiting vertical angling motion of the coupler with respect to the yoke. It will be understood, however,

.that the angling of the coupler with respect to the yoke in a vertical plane is primarily limited b the amount of play between the upper an lower walls of the butt portion of the coupler and the u per and lower faces, respectively, of the b ock contained in the pocket 9 as well as by the play allowed hetween the key 3 and said block 11 on the one. hand and the draft sills and cheek plates on the other.

In order to assemble the block 11 in the pocket 9 of the coupler stem, it is necessary to turn the same from the position shown in Figure 1 through substantially 90 in a horizontal plane. It will then be possible, because of the relative width and length of the block, to move the block transversely into position between the front and rear walls of the pocket whereupon the block may then be turned back through approximately 9o so that the convex spherical surfaces thereon will engage with the complementary surfaces on the interior of the pocket.

The modification illustrated in Figures L and 4 of the drawing is substantially the same as that illustrated in Figures l and 2 except that the yoke 2 is of the horizontal type rather than of the vertical type, as shown in the first two figures. The key 3 in this modification therefore extends through the block 1l contained in thc pocket 9"l of the coupler butt and through slots 26 and 27, respectively, in the forwardly extending arms 24 and 25 of the yoke. The spherical-ended butt portion 8, instead of engaging an integral transverse portion of the yoke as in the first modification, engages a block 5n between the forwardly extending arms 24: and 25 of thc yoke, said block being connected thereto and held in alinement therewith by means of a key 35 extending through slots 3G and 3T, respectively, in the arms 24: and 25 of the Yoke 2.

'lhe bloc: oa is formed with a forward face shaped to closely lit the spherical-ended coupler butt, as in the tirst inodilication, so thatl when the coupler is subjected to bull'- ing force it is transmitted directly to the cushioning mechanism through thc complementary faces on the coupler butt and block.

When draft forces are applied to the cou- )ler l they are transmitted through the lock ll and key 3 to the yoke 2. lt will be noted from an inspection of Figure 2' that the yoke slots for the key 3 permit. motion of said key rearwardly independently oi' the yoke, whereas, the slots 36 and 3T are similarly constructed in this respect. This permits the keys 3 and 35 to move rearwardly upon the application of bufling forces without corresponding movement of the yoke member.

In this modification horizontal angling of the, coupler with respect to the yoke is limited by the forwardly extending arms 24 and 25, whereas vertical angling therebetwcen is limited by the play or lost motion between the cooperating horizontal t'aces ou the pocket 9, the block lln and the key Il.

It will be apparent that by virtue ol' the afore-described construction l have provided a connection between the coupler and rola for railway draft rigging which allow.-y a universal angling motion therclwlweeu to a desired but limited degree. l,The parts culployed for ell'ecting this connection are easltlfi lltl i C2i ily manufactured and assembled and may be built to conform to the A. R.' AQrequirements with respectto size.

Having now described my invention, I claim:

1. In a railway draft rigging, the combinationwith a coupler, of a yoke, and a key connecting the coupler and yoke to transmit draft forces and support said coupler and yoke, said yoke and coupler having a universal connection therebetween.

2. In a railway draft rigging, the combination with a coupler,of a yoke provided with a curved'bearing portion, a complementary bearing portion on the coupler engaging therewith for universal movement thereon, and a key adapted toA transmit draft forces between said coupler and yoke.

3. In a railway draft rigging, the combination with a coupler provided with a substantially spherical butt portion, of a yoke provided with an integral portion connecting forwardly extending arms thereof, said integral portion having a face of substantially spherical conforma-tion and concentric with the butt portion of the coupler for universal bearing motion therebetween, and means extending between the coupler and yoke for transmitting draft forces therebetween.

4. ln a railway draft rigging, the combination with a coupler provided with a butt substantially spherical in contour, of a yoke provided with a cushioning mechanism pocket, and a coupler engaging pocket, said coupler pocket being formed with a substan.

tially spherical portion fitting the coupler butt for receiving buffing forces therefrom and for universal movement with respect thereto, and additional means intersecting said coupler and yoke for transmitting drafty forces therebetween.

5. In a railwaydraft rigging, the combination with a coupler provided with a stem containing a spherical cavity, of a spherical block mounted in said cavity, a yoke, and means extending through said block and connecting the coupler to the yoke.

t5. ln a railway draft rigging, the combination with a coupler provided with a pocket in its stein, the opposite walls of said pocket being concentric and substantially spherical, of means mounted in said pocket and having substantially spherical portions fitting the spherical walls of the pocket in the coupler, a yoke, and lneans extending through said means and yoke for transmitting forces therebetween.

7. In a railway draft rigging, the combination with a coupler provided with a rear transverse wall and a transverse wall spaced withrespect thereto, the inner faces of'said walls being concentric and substantially spherical, of a slotted block mounted be tween said walls and having bearing surfaces shaped to fit and be closely embraced between the spherical portion of said walls, a yoke, and a key extending through the slot and yoke for connecting the coupler to the yoke.

8. In a railway draft rigging, the combination with a coupler provided with a rear integral transverse wall and an integral transverse wall spaced with respect thereto, the inner faces of said walls being concentric and substantially spherical, the outer face of the rear wall being curved substantially concentric with the inner faces, of a slotted block mounted between said walls and having bearing surfaces shaped to fit and be closely embraced between the sph-erical portions of said walls, a yoke engaging said coupler, a key extending through slots in the block and yoke for connecting the coupler to the yoke, and a portion on said yoke kfitting the outer face of the rear wall of the couplerk and bearing thereon.

9. In a railway draft rigging, the combination with a. coupler provided with a butt substantially spherical on its rear surface, of a yoke provided with a portion between forwardly extending arms thereof, said portion having a forward face substantially spherical and fitting the spherical surface of the coupler butt, and separate means for transmitting draft forces therebetween.

10. In a railway draft rigging, the combination with a coupler provided with a butt substantially spherical on its rear surface and having a pocket formed in the butt portion between a rear wall thereof and a wall forwardly spaced therefrom, the inner surfaces of said walls being substantially spherical and concentric with the rear snrface of the butt, of a block mounted in said pocket and closely fitting between said walls, a yoke provided with an integral portion between forwardly extending arms thereof, said portion being provided with a, forward face substantially spherical and fitting the spherical surface of the coupler butt, rearward extensions on the yoke, and means connecting 'the block to said rearward extensions. I

11. In a railway draft rigging, the combination with a coupler provided with a butt substantially spherical on its rear surface and formed with a pocket in said butt por-` tion between a rear wall thereof and a wall forwardly spaced therefrom, the inner surfaces of both walls being substantially spherical and concentric with the rear surface of the butt, of a block mounted in said pocket and closely fitting between said walls,

a yoke rovided with a portion between the foi-war( ly extending arms thereof, said portion being provided with a. forward face substantially spherical and fitting the spher ical surface of the coupler butt said yoke being also provided with slotted forward oxtensions, and a key passing through said block and the slots in said extensions.

12. In a' railway draft rigging, the combination with a coupler provided with a stem substantially spherical on its rear surface and formed with a pocket therein between a rear wall thereof and a wall forwardly spaced therefrom, the inner surfaces of both walls forming a portion of a sphere concen tric with the rear surface'of the stem, of a block mounted in said pocket and closely fittin between said walls, a yoke provided witi an integral portion between forwardly extending arms thereof and forming a pocket for cushioning mechanism on one side and a pocket for the coupler stein on the other side, the coupler stem pocket being provided with a portion substantially spherical and fitting the spherical surface of the coupler buttfor transmitting bufling forces therebetween, and means for transmitting draft forces between said block and yoke 13. In a railway draft rigging, the combination with a coupler provided with a butt substantially spherical ou its rear surface and formed with a pocket therein between a rear wall and a wall forwardly spaced therefrom, the inner surfaces of said walls forming a portion of a sphere substantially concentric with the rear surface of the butt ortion, of a block mounted in said pocket and closely Fitting between said walls, a yoke provided with a portion between forwardly extending arms thereof adapted to contact on side with cushioning mechanism and on the other side with the butt portion of the coupler, that portion contacting with the coupler being formed substantially spherical for universal movement with respect thereto.

14. In a railway draft rigging, the combination with a coupler provided with a butt portion substantially spherical and formed with a pocket holding a block therein, said pocket and block being shaped for universal movement therebetween a yoke connected to the coupler and provided with an integral portion between forwardly extending arms thereof, said portion having a face formed to closely tit-and bear against the coupler butt, and forwardly extending means on the yoke for limiting the angular motion of the coupler with respect thereto.

15. A coupler rovided with a stem having a substantia ly spherical butt portion and formed with a pocket therein between a rear wall thereof and a wall forwardly spaced therefrom, the inner surfaces of said walls being substantially spherical and concentric with tlie butt portion for universal motion with respect to a bearing member.

16. A yoke for railway draft rigging, coniprising forwardly extending arms, an integral wall connecting the forward portions of said arms, the forward face of said wall being provided with a cavity therein substantially spherical in contour, and webs connecting the side edges of said arms forwardy of said wall and slotted for receiving a rey.

17. A yoke for railway draft rigging with forwardly extending arms, an integral bridge. portion connecting said arms, said bridge portion being provided on its forward tare willi a substantially spherical cavity and its rear face being adapted to engage cushioning mechanism, said arms in front of the bridge portion being connected by slotted flanges or webs forming a pocket for a coupler stein, serving to limit the angular motion of .Lluch a stem with respect thereto, and receive a key for connection therewith.

ln testimony whereofI atlix my signature.

DONALD S. BARROWS..

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