US628237A - Draft-rigging for cars. - Google Patents

Description

No. 628,231. Patented July 4, 1899. n. c. wlLLlAMsoN a H. PmEs.

DRAFT RIGGING FUR CARS.

` (Application led Feb. 23, 1899.) fNo Model- 2 sheets-snee@ E? gy/4%@ ghe/W ynAH'or'ney:

l Pate'nted'luly 4, |899. H. C. WILLIAMSON &. H. PHIES.

DRAFT RIGGING FOR GARS.V

(Application ilod Feb. 23. 1899.) No Model.) 2 Sheets-Sheet 2` Wnesses:

WMU/J UNITED STATES PATENT OEEICE.

HENRY C. WILLIAMSON AND HERMAN IRIES, OF MICHIGAN CITY, INDIANA.

DRAFT-RIGGING FOR CARS.

SPECIFICATION forming part of Letters Patent No. 628,237, dated July 4, `1899.

Application fled February 23, 1899. `Serial No. 706,503. (No model.)

To all wltom, it may concern:

Be it known that we, HENRY C. WILLIAM- soN and HERMAN Pains, citizens of the United States of America, and residents of Michigan City, county of La Porte, and State of Indiana, have invented certain new and useful Improvements in Draft-Rigging for Cars, of which the following is a specification and which are illustrated in the accompanying drawings, forming a part thereof.`

This invention relates to draft-rigging especially adapted for use in connection with freight-cars and of the type in which a plurality of springs are employed for com municating strain to the draft-beams; and its objects are to secure simplicity and economy of construction, together with great strength and durability. These objects are attained in the construction hereinafter described and which is fully illustrated in the accompanying drawings, in which- Figure l is a detail central vertical section of a car-body, taken on the line l l of Fig. 2. Fig. 2 is a detail section on the line 2 2 passing through Figs. l and 3. Fig. 3 is a vertical section on the line 3 3 of Fig. l. Fig. I is a vertical section on the line 4 4 of Fig. 1. Fig. 5 is a perspective of the thrust-loops employed in transmitting pressure from the outer bar to the springs, the springs being in place therein, and Figs. 6 to 17 are perspectives of the various elements forming the componentparts of the draft-rigging.

We show in the drawings at A, a draw-bar of ordinary construction; at B B, a pair of draft-beams, between which the draw-bar is located; at C, a loop attached to the inner end of the draw-bar and serving as the means for communicating the draft from the drawbar to the parts engaging the draft-beams; at

l D, a metal brace-plate for securing the draftbeams B B together and being located back of the inner end of the loop C and having lateral flanges at its ends, by means of which it is bolted to the draft-beams, and at d a block interposed between the draft-beams and reinforcing the brace-plate D.

shown at E E and in cross-section are substantially Z-shaped, having a foot-liangc e',

extending outwardly upon the lower face of the draf t-beam, and a top flan ge e2, projecting inwardly, these Hanges contributing to the strength and general utility of the plates. These platesare exactly alike, so that the description of one is sufficient. The plate has near each of its ends a laterally-offset.

portion e e, adapted to enter suitable recesses in the draft-beam, these offsets, and consequently the recesses for receiving them, having abrupt ends, so that strain applied to the plate in either longitudinal direction will be transmitted to the beam. The offsets e e form the recesses within which the front and rear followers F G reciprocate, and the inner faces of the ends of these offsets are abrupt, so as to aord suitable bearing-contacts for the followers. lAt each end of the odsets e e stock is provided, through which bolt-holes 7L are made for the accommodation of the bolts h' for securing the plates I-I across the bottoms ofthe recesses of the draft-plates,which plates form supports for the followers F Gr, and hence for the inner end of the draft-rigging. Intermediate of the offset e e the draft-plate E is provided with instanding countersunk integral thiinbles K for the accommodation of the bolts k, by means of which the draft-plates are secured to the draft-beams. y At each end the draft-plate E is prolonged a little beyond the offset e, and these projecting lips m serve as further means of attachment for the draftplates to the beams, being secured under the plates bolted to the beams. v At the rearward end of the draft-plate this is accomplished by means of the lateral iiange of the brace-plate D, the ledge of which bears against a shoulder .forming a part, of theoffset e, so that the thrust strain and the strain of impact due to shunting are in part transmitted by means of the plate D to the reinforcing-block d.' The forward end of the draft-plate is 4secured by means of a plate M crossing the face of the draft-beam and being secured thereto by bolts, as shown. The end abutments of the draft-plates E, which form bearings for the followers F G, may be extended a short distance beyond the plane ofthe face of the draft-beam, forming a more extended bearing for the followers.

Normally the forward follower Fis in con- IOO tact with the end of the bar A and with thc forward abutments of the draft-plates, and the rearward follower G is in contact with the cross member of the loop C and with the rearward abutments of the draft-plates. A pair of interlinked U-shaped loops O P is interposed between the two followers, the cross members of these two loops being normally in contact, the ends of their side members bearing against the followers. A pair of spiral springs S s, the latter inserted within the former, is interposed between the follower F and the cross member of the rearward thrustloop P, and a similar pair ofsprings S s' is interposed between the follower G and the cross member of the forward thrust-loop O. rlhe thrust-loops O P are preferably identical in form in every particular. The inner faces of their side members are concave, the curvature extendingthrough an arc of ninety degrees and conforming to the curvature of the periphery of the outer springs S S. At each edge of each of the side members there are provided radially-disposed iianges o 2J, and when the two members O P are interlinked, as shown in Fig. 5, the fianges 0 of the one are in sliding contact with the flanges 1J of the other. Brace-plates o'p, of the same configuration and size in cross-section as the side members of the thrust-loops O P, may be bolted to these side members near their ends in order to secure added strength, these plates being attached, of course, after the thrustloops have been interlinked.

The two ends of the draft-plates E being alike and the two plates being identical in form, it will be seen that the assembling of the device is greatly simplified, as the plates are interchangeable. The uniformi ty of construction of the two thru st-loo ps also con-tributes to the simplicity of the device.

Forward draft upon the barAis transmitted through the loop C and communicated to the draft-beams by the follower F, both sets of springs being compressed, the rearward springs S s' between the follower G and the cross member of the forward loop O and the forward set of springs S s being compressed between the cross member of the rearward thrust-loop P and the follower F. In thrust pressure is communicated to the draft-beams through the follower G, the pressure of the bar A being directly upon the follower F, the forward set of springs S s being compressed between this follower and the cross member of the rearward thrust-loop P and the rearward set of springs S s being compressed between the cross member of the forward thrustloop O and the follower G. The transmission of pressure to and from both sets of springs being by means of the thrust-loops,which are external thereto, the diameter of the coils may be smaller than when a stem is employed, which is located on the axis of the springs, and hence the springs may be lighter than when larger coils are used without sacrificing stiffness.

The brace-plates o p serve the further purpose of stops to limit-the movement of the draw-bar in either direction, so as to prevent the overloading or excessive compression of the springs. Draft strain upon the drawbar results in forward movement of the thrustloop P, the thrust-loopA O remaining stationary. It will be seen that when in its forward movement the loop P comes into contact with the plates o it will be etfectually stopped thereby. In the case vof an inthrust the loop P remains stationary, and the loop O maybe moved inwardly until it strikes the braceplates p', which arrest its forward movement.

While we have shown a loop projecting backwardly from the draw-bar and serving as means for communicating forward draft to the car, we do not desire to be limited to this form of construction, as any other means for applying` the forward strain to the rearward end of the cushioning and transmitting mechanism will come within the scope of our invention.

We claim 'as our invention- 1. In a draft-rigging for cars, the combination with a pair of draft-beams having abutments, a draw-bar located between the beams, a loop projecting from the inner end of the draw-bar, a follower set through the loop adjacent to the draw-bar, and a second follower set through the loop adjacent to its cross member, such followers engaging the abutments, of a pair of interlinked U -shaped thrust-loops interposed between the followers, and a spring located between the side members of each of the thrust-loops and reacting betwcen one of the followers and the cross member of the other thrust-loop.

2. In a draft-rigging for cars, the combination with a pair of draft-beams, a draft-plate secured to each beam and having abutments and a backwardly-projectinglip without boltholes, of a brace-plate having lateral anges bolted to the beams, such flanges overlapping and clamping the backwardly-projecting lips of the draft-plates.

3. In a draft-rigging for cars, the combination with a draw-bal', an extension-loop at the inner end of the bar, and a follower within and at each end of the loop, a pair of interlinked thrust-loops interposed between the followers, such thrust-loops having interlocking radial guide-fianges adapted for mutual sliding engagement, and a cushioning-spring located wit-hin each thrust-loop and reacting between one of the followers and the cross member of the interlinked loop.

4. In a draft-riggingfor cars, in combination, a pair of draft-beams having front and rear abutments, a draw-bar having an eX- tension-loop atits inner end, a pair of followers located within the loop and at opposite ends thereof and engaging respectively the front and rear abutments, a pair of interlinked thrust-loops interposed between the followers,cushioni11g-springs located between the side members of each of the thrust-loops IOO IIO

and each reacting betweenone of the followers and the cross member of the loop inclosing the otherspring, and cross-plates joining the side members of the thrust-loops, such plate on each loop limiting the movement of the other loop.

5. In a draft-rigging for cars, the combination with a draw-bar and its draft-loop, of followers adapted to 'engage abutmentssecured to a-car and cooperating respectively with the draft-bar and draft-loop, of a pair of interlinked U-shaped thrust-loops interposed between the followers, and springs interposed between each of the followers and the cross vmember of the more remote tlirustloop.

6. In a draft-rigging, irl-combination, a draw-bar,springs arranged in tandem,a pair of interlinked U'shaped thrust-loops inclosing the springs and having their cross membersv interposed therebetween, a follower abutting against the outer end o f each thrust-loop and being adapted to engage abutments secured to a car, the forward follower being adapted to receive the inthrust of the draw-bar, and

means for com municating forward draft from the draw-bar to the rearward follower.

7. In a draft-rigging, in combination, la draw-bar, a pair of followers, a tailpiece for the draw-bar for applying draft to the rearward follower, a pair of interchangeable interlinked thrust-loopsinterposed between the followers', and a cushioning-spring inclosed within each thrust-loop.

S. In a draft rigging, in combination, a draw-bar, a pair of followers, a iailpiece for the draw-bar for applying 'draft to the rearward follower, a pair of interlinked U -shaped thrust-loops identical in form, interposed between the followers, and a cushioning-spring inclosed within each thrust-loop.

9. In a draft-rigging, in combination, a draw-bar, apair of followers, a tailpiece for the draw-bar for applying draft to the rearwardfollower, a pair of interchangeable in- .terlinked thrust-loops interposed between the followers,such thrust-loops having mutuallyengaging radial guide-fianges at the edges of their longitudinal members, and a cushionring-spring inclosed within each thrust-loop.

l0. As an article of manufacture, a U- shaped loop for draft-rigging, having the inner faces of its side members concave, and having radially-projecting guide-flanges at the edges of such members.

11. As an article of manufacture, av U- shaped loop for draft-rigging,having radiallyprojecting guide-anges at the edges of its members.

HENRY C. WILLIAMSON. HERMAN PRIES. Witnesses:

Y SAMUEL J. TAYLOR,

LEROY D. HAMRioK.

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