US1209188A - Radial-draft gear. - Google Patents

Description

c. P. MEYERV @L F. R. CAMPBELL.

RADIAL DRAFT GEAR.

APPLICATION FLLED MAY LB. 1915.

Patented Dec. 19, 1916.

2 SHEETS-SHEET l.

5 num/fox can@ MaJ/La g @fatica-MH c. E. MEYER 'L E; R. CAMPBELL.

l RADIAL DRAFT GEAR. APPLICATION FILEDlMAY 18,1915.

Patented Deb. 19,1916.

' 3 wveAM-oz CLL 2 SHEETS-SHEET 2- and FRANK Rf CAMPBELL, both citizens of.

Unia-En sra'rns ramena onirica CHESTER F. MEYER AND FRANK R. CAMPBELL, OF CLEVELAND, OHIO, ASSIGNORS T THE NATIONAL MALLEABLE CASTINGS COMPANY, OF CLEVELAND, OHIO, A CORPO- RATION 0F oH'Io.

RADIAL-DRAFT GEAR.

To all whom it may concern Be it known that we, CHESTER F. MEYER the United States, and residents of Cleveland, Cuyahoga county, Ohio, have jointly invented new and useful Improvement-s in Radial-Draft Gears, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 is a vertical section of a radial draft gear embodying our invention; Fig. 2 is a horizontal section thereof; Fig. 3 is a section on line III- III of Fig. l.; Fig. 4 is a section on line IV--IV of Fig. l; Fig. 5 is a section on line V-V of Fig. l; Fig. 6 isa detail section of the outer casing; Fig. 7 is a section on line VII-VII of Fig. 6; Fig. 8 is a detail 'of the follower. i l

Our invention relates to radial draft gear, and consists in an arrangement which permits the coupler to buff directly against the shock absorbing mechanism and thereby avoids throwing heavy buffing strains on the A parts of the draft member.

Our inventiony also consists in the construction and coperation of the various parts which we shall hereinafter describe l and claim.

Referring to the drawings, A indicates lthe coupler, B the outer casing. of the draft member, C the inner casin of the draft member, D the shock absorbing mechanism which we have shown in the form of'a friction barrel, and E the follower.

' The outer casin B has a forward exte sion in the form o a' pocket 2, for reception of the coupler shank 3. Therear end of the pocket 2 terminates in a rectangular opening 4 for admission of the coupler liner block 5 and the guiding lugs 6, 6 of the inner casing C, which project forwardly through the opening 4 above and below the coupler liner block when the gear is under buiiin' stress. The forward end of the inner case C likewise has an opening 7 for admission of the liner block 5, so that it may abut directly. against the forward end of the friction mechanism D.

The rear portion of the outer casing B is preferably cylindrical .throughout its length and is enlarged at itsrear end. Uponthe inner wall of this enlarged portion are segmental pulling lugs 8, preferably one on each side, which occupy a little less than Specication of Letters Patent. Patngq'gd Dec 19, 1916 Application filed May 18, 1915. Serial No. 28,814.

one-half of the inner periphery of the case, as will presently be explained.

The inner casing C has a cylindrical forward portion which has a bearing when under heavy buff at its forward end against the shoulders 4 at each side of the opening 4 in the casing B, and contains the friction mechanism D, as is shown in Figs. 1 and 2, and also rearwardlyextending verticallyalined arms 9, 9, apertured fora pivot pin l0. The lower arm 9 is provided with apertured ears l1, to support a pivot pin retainer.

The follower E at its rear side is formed with a concave buiing surface 12, which bears against a similarly-curved convex surface upon the pivot casting 13. The forward face 14 of the follower E is designed to abut directly against the rear end of the friction mechanism D. The follower E also has on each side outwardly-extending segmental pulling flanges l5, adapted 4to cooperate with the lugs 8 of the outer casing B in the manner later to be described.

In assembling the draft member, the fric- I tion mechanism is inserted into the inner casing C from its rear end passing between the arms 9. The casing C is then inserted into the outer casing B, the two casings being temporarily so alined that the arms 9 of the inner casing lie in the same plane as the pulling segments 8 of the outer casing B,

and with its guiding lugs 6 bea-ring againstn 15 on the follower into alinement with each other, so that the projections 16 will be brought into register with the correspondling notches 17 in the segments 8, and the alinement between these parts will thereby be secured. The turning of the inner case Cwill also bring the lugs 6 into alinement with the opening 4 in the forward end of the cylindrical portion of the case B. The coupler A may then. be placed in the pocket -and skidded rearwardly, the liner block 5 passing through the opening 4 between the guidinglugs 6 and throughtheopening 7 at the forward end of the inner case C, until it presses directly against the closed end 0f the friction `case and `pushes it and the follower .E rearwardly. By inserting keys 418 through the slots 19 in the shank pocket so` as to lock the coupler in place, the outer casing is drawn forwardly and at the same time the coupler will hold the friction mechanism and through it the follower Efrom forward f movement, so that the segments 8 on the 'outer casing B andV the flanges 15 on .the

follower will fit snugly together and will be held in alinement by the projections 16 and notches 17 e v The operation of the device is as follows:

`In draft thev coupler pullsthe outer casing B forwardly, and the casing B, through the engagement of itsv segments 8 with the flanges l5 of the follower, pulls the follower forward. The follower in'turn compresses `mitted from the Acoupler to the car as follows': from coupler to outer casing B, `from -outer casing B to follower E by segments 8 Zand fianges 15; from follower to friction mechanism D; from v friction mechanism to inner casing C; from inner casing by arms 9 to pivot pin, pivot-casing and to car. In buff the coupler linerblock bears directly upon' the friction case D and drives-it rearwardly, so that the follower E, whichis held stationary by the pivot casting, will force the friction elements-into the case and the bufling shocks will thereby be taken up. The

outerA casing B is carried rearwardly-with1 the coupler A sliding upon the inner casing C, but isv not under stress, while the inner casing C, as in draft, remains stationaryas it is pivoted by its arms 9 tov the pivot casting 13. It will therefore be seen that the outer casing B and the inner casing `C are under stress only in draft, and that the -heavy bufling blows transmitted from thev coupler'are takenup directly by the shockabsorbing mechanism and are thence trans- `mitted byA the follower Eto the pivt casting on the car, until the friction rigging goes solid, after which the remaining stresses are transmitted through the shoulders-20 on the outer casing B directly to the follower.

time, thus distributing the stress between the two casings and the lfriction gear. The casing C. is held from twisting by reason lof the connection of its arms 9 to thelpivot pin, and the rectangular opening 7 and the lugs 6 keep the coupler from twisting with The' shoulders 4 alsostrikethej' forward end of the inner casing at the same respect to the casing The coupler butt, however', under heavy draft stresses,v is pulled forward of the flanges or lugs 6, 6 of the casing C, so that the coupler and outer casing A wouldbe free to twist were it not for the notches 17 in segments 8 and pro# jections 16 in the flanges 15 on the follower. The follower E is held from twisting by the 'arms 9 of the casing C. rlhe guiding lugsy 6, 6 of the .inner casing are flared outwardly, 75 to assist in guiding the coupler butt to the rectangular opening7 in the forward wall of the casing C, and also serve to maintain the device in alinement in case the friction mechanism should fail to release. The friction mechanism would then remain under partial compression, and the corresponding amount of longitudinal play might, without the lugs 6, permit the coupler butt to get out ofalinement with the rectangular opening in the forward end of the casing C.

The terms and expressions which we have employed are used as 'terms of description and not of limitation, and we have no intention, in the use of such terms and' eX- -pressions, of excluding any mechanical equivalents for'the features shown and described, but recognize that various structural modifications arepossible within the scope ofthe invention claimed.

What we-claim is:

l. In a radialdraft gear, a casing pivoted to the car body, containing a shock absorb-` ing mechanism, a second casing having a telescoping engagement with the first named casing, a coupler adaptedto move with the second named casing, and an opening in the first named casing to permit'the rear end of the coupler during buffing to move therethrough into direct contact with the shock absorbing mechanism.

2. In a radial draft gear, a casing piv` otally connected to a car containing a shock absorbing mechanism, a follower having a bearing on the shock absorbing mechanism il@ and engaginga second casing', the follower and the second named casing having a recess and projection engagement to prevent a twisting movement of the second named casing. 1

3. In a radial draft gear, a casing adapted to Abe pivotally mounted on a car and containing a shock-absorbing mechanism, a sec-V 'ond casing having a plurality of Iinwardlyextending lugs, and a follower having a plu- 2&2@ rality of outwardly-extending anges, the lugs and flanges being adapted to be rotated into engagement during assembly of 'the gear.

4:. In a radial draft gear, vacasing adapted 325 "to be pivotally mounted on a car and containing a shock-absorbing mechanism, a second casing having a plurality of lugs, and a follower having a plurality of Hanges, the

follower being adapted to be inserted into 13@ the second casing and to be rotated to bring the flanges into -lalinement with the lugs, the lugsand flanges cornhprisng means for locking the parts of the gear together.

5L Ina rradial draft gear, va casing pivotally connected yto '-a car'shock absorbing mechanism contained therein, a second casing having pro]ect10ns,' a coupler connectedto said second casing, a follower normally in engagementwith the car and having -projections adapted to have a pulling engagement with the projections on said second strain.

casing, a plurality of sets'of shoulders on said Vsecond casing, one of said sets being adaptedto have a bufing engagementfwith the follower, and another 'ci fsaid'fset's to have a bufling eng-agement .wthmtherst shocks are distributed between said follower land said first named casing, to relieve` the shock absorbing lmechanism Kof 'excessive

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