US978873A - Mechanism for yieldingly resisting relative movement of bodies. - Google Patents

Description

n. D. GALLAGHER, In. MEGHANISM FOR YIELDINGLY RBSISTING I`L.`I.|A'IIVL1 MOVEMENT OP BODIES.

APPLIOATION P ILBD NOV, 27. 1909;

Patented Dec. 2G, 1910.'

mma

3 SHEETS-SHEET l.

Y ,RL D. GALL-AGREE, JR. MEGHANISM FOR YIELDINGLY RESISTING RELATIVE MOVEMENT 0F. BODIES.

` APPLICATION YILED NOV. 27, 1909. 978,873 Patented 1360.20, 1910. l 43 SHEETS-SHEET 2.

- R. D. GALLAGHER, JR. MEGHANISM-OR YIELDINGLY RESISTING RELATIVE MOVEMENT 0F BODIES.I

APPLICATION FILED NOV. 27, 1909.

Patented Dec. 20, 1910.

3 SHEETS-SBEQT 3.

.4|||| IIHHIIII UNITED srnrns PATENT OFFICE.'

RICHARD D. GALLAGHR, JR.; OF NEW YORK, N. `Y., ASSIGNOR TO STANDARD UOUPLE'R COMPANY, F NEW YORK, N. Y., A UEPRATION l'E NE'W JERSEY.

MECHANISM non YifnLnrNGf-LY 'nnsrs'rme rmnamvnrrovmmnmr or nomas.

essere.

vkEpecication of LetteIsIa'tent. `v Patente/d Dec, 20,1911),`

Application .mea navemer 27, k1me. l serialno. 530,263.

To' all whom it may concern:

-Be it known -that I, RICHARD D. GALLA- GHER, Jr., a citizen of the United States, re-\ siding at New York, in ithe county of New York and State ot' New York, :have .invented certain new and useful Improvements 'in Mechanism for Yieldingly Resisting Relative Movement of Bodies; -andI do hereby declare the :following-to be a full, clear, and exact description `ot the same, reference being had :to .the Aaccompanying drawings, forming a lpart `of this specification, and I'to'. the figures and 'letters of reference .marked thereon.

The present invention :relates `tomeehanism designed for rabsorbing kthe relative movement between bodies by dissi-pitting the energy -in overcoming the elastic resistance of yielding members and, at the same time, providing a means whereby injuriousrecoil Y is, `to a large extent, eliminated.

The invention is moreespeeia'lly applicable to buiing gear yand draft rigging of railway cars and has been designed with especial reference to this class of devices.

Broadly stated, -the inventionzonsists in a mechanism ofthe character indicated-em bodyinga series of `elastic plates arranged `in intimate frictional Contact with each other lto form a lyielding resistance 'member and means whereby said plates may be flexed intermediate their ends, the frictiona'l contact between the plates being maintained and increasedv by a supplemental yielding follower member 'adapted to be moved against its spring resistance by the flexing of the plates in absorbing the movement of the parts. y

The .invention further consists in certain novel .details of constructioniand combination and arrangements of parts, all .as will, be hereinafter described and ypointed out particularly in the appended claims. y

. Referring to thefacco'mpanying drawings Vwhich show the 'inventionns appliedtobuffing mechanism fand draft rigging -ofirailway cars-Figure y1 -is .a top plan, one :half i in .horiaontal section of a portion of one end of a railway car 'with the flooring Aremoved. Fig. 2 is a longitudinal sectioninfa central -vertical plane' of the parts illus- .trated in Fig. 1. tigt 3-is1a .section ina vertical plane on `the 4line 8-3 of Fig. f1.

Fig. 4 is an endelevation of'one half .o'f the 55 structure shown .irillIPigLl L' AFig? 5 -tisa top employed in connection with the Ipresent inf plan view, -one-half-in section, of' a k:draft gear embodyingthe lpresent improvement s.

Like letters of reference in the severalA figures indicate the same lpart-s.

lVhile the invention of ythe present appli` 60 cation may be embodied in -many 'different mechanisms and lparticularly may be embodied .in .many Vdiierent :arrangements of draft and buffng rigging ttor -rai-lway car-s, l have adopted for illustrative purposes fa k($5 type of'bufling mechanism which is part/icm, larly well adapted for use on passengercars and similar railway equipment.

In Figs. 1 .to 4, the letter A indicates the end sill of a car.; B the bu''er beam, and C 70 longitudinal sills suspended beneathor upon which the end sill land buii'er beam are mounted. Thebufer beam is provided-with a buffer ybeam extension D and the buer E, which projects yin vfront vof thebuer beam, 'L5 is supported on side stems Fand a center stem 1G, all of which stems .extend back through the buiferbeam extensionand buii'er r beam in the ordinary way. The center stem l is illustrated as of great width in proportion tio-its thickness in a vertical plane, whereby l additional strength .and rigidity is secured/ to resist the `heavy'buiing:strains to Awhich i/t/ may be subjected when used .in connection with athe present, invention. Between the buffer beam and end sill of the car `therevis interposed a housing for .the operating parts of the mechanism and, while this housing in the particular form illustrated, correspondsr closely to `that illustrated in my :prior appli- 9b".

cation, Serial No. -519, 552,=and is preferably vention 4for bufiing mechanism, it will `be' under-stood that any suitable supportingden vices or framing-.may be-substituted therefor '95 without :departing 'from the invention. Ther said yhou-sing is preferably an'integral casting which, at its-rear end `H abuts squarely againstthe end silloand itis provided with .forwardly extending sides Hf adapted .to

abut squarely against the inner face -ofthe .bi1-iler beam. 'It is further 4:provided with lateral "extensions .H2 `forming vbrackets for the support of the ,inner 4(ends .of )the side stems and side stemsprings F. Forconm5 venience, the rear -en'ds of Vthe .side stemsF bear in .rear Aeide stem followers f and the latter vare held yin-.chambers in `brackets H2,

beingadapted forremoval therefrom through aperturesgh, best se'en in Fig.v :1 `oi. the drawl 110 ing. The rear portion of the casting preferably forms a housing for the rear ends of@ secondary center stemY springs I and is further provided with stops or shoulders i against which a rear follower K is adapted to come to rest. The rear follower K is normally heldadvanced by the rear springs I actingthrough a supplemental follower L, to be presently described. Immediately forward of the rear follower is a yielding body, formed of a series of elastic plates M, in intinate frictional contact with each other confined between the rear follower K and a front follower N, and said followers. as well as the elastic plates, being supported in the casting by a bottom web O, shown clearly in 'Figs 2 and 3, so as to be capable of a. longitudinal movement. Between the front follower N and the inner end of the center stem G there is interposed a preliminary spring or springs P and an inner stem follower'p which may serve to position the front end of the spring and is adapted to seatagainst the forwardly extending flange n of the front follower N when the preliminary spring is compressed.

Obviously, the form of the proximate faces of the front and rear followers and of the elastic plates may be varied, inasmuch as the object is to provide an enormous yielding resistance to any relative movement of said followers and this is secured by flexing the plates.` ln the preferred arrange.- ment, the. plates are normally curved and nested, one within the other, so as to form a body which is concave-convex. the convex face rest-ing at its center against one follower and the concav`e face resting-at its ends against the other follower, thefollowers themselves being provided with substantially plane faces. The elastic resistance of a body of plates in intimate frictional .contact with each other, it is well known may be made very great where intended to over come or absorb a relatively short "movement and, in Athe present invention, not only is .this resistance augmented but the friction between the plates is increased and mamivl tained during thefen'tire bending movements of the plates by the' supplemei'ital follower L, before referred to. This supplemental follower is supported bythe rear springs l and its ends Z contact with the elastic plates in proximity to their ends. ,ln the particular embodiment illustrated, the ends Z of the supplemental follower engage the convex face of the body of plates slightly 'within or nearer the axial line. of the device than are. the contacting points between the opposite face of the body of plates and the forward follower. This particular arrangement is not essential but is preferable, be cause rearward movement of the front follower resisted 'by thc supplcn'iental vrear follower alone will tc'nd, in a slight degree, to

' flex the platesor bend them back-into a more nearly straight position. The rear follower,

on the other hand, which contacts with the body of plates at the center, will serve as the' main abutment against which the plates may be flexed by the movement of the forward follower, but throughout the movement or bending of the plates in both directions, the supplemental follower will hold them in intimate frictional contact, espeeially near the ends and, .as a result of the arrangement, injurious recoil is, to a large extent, eliminated.

rPhe operation of the embodiment of the device thus far described will, under heavy bufiing strains, be as follows -The buffer being pushed inwardly forces the center and side stems in, themovement of the side stems being resisted by the side stem springs. and the movement of the center stem` being preliminarily resisted by the preliminary spring P. The preliminary'spring P is a relatively light spring, and, when it 'is' compressed and the center stem follower seated against'the forward follower,the

body of plates will ,be moved rearwardly. During the intermediate portion of the total movement the tiexible plates will be flexed only slightly, if at all, such -portion of the movement being resisted by the rear springs I but, upon the movement of the rear fol lower K being arrested by contact with the stops 2f, further inward movement of the buffer is yieldingly resisted by the body of elastic ,plates and also bythe rear springsI secured on the proximate faces of the .draftl timbers and R R indicates followers confined between the stops on said plates. S indicates the strap and T T bodies of iexible plates corresponding-,to the plates M of Figs. l to 4. In this embodiment, the bodies of plates F are coneavo-convex with the coni vex faces toward each other, or toward thef" center of thedevice. Oppositely disposed intermediate followers U contact with the' convex faces of the plates, said followers being provided with flanges u adapted to Contact with each other to arrest the relative movement of the intermediate followers.

lSupplemental followers V are located within the intermediate followers U and their ends 'a project through the intermediate followers and into`contact with the bodies lof tiexivble platesA in proximity to the ends of the latter. Intermediate springs W are' interposed betweeu the supplemental followers and serve to normally hold said followers,

together with the followers U, against the proximate faces of the plates. In operationv and acting under either draft or buffgva-ave ing strain, one of the end followers R will be moved inwardly, thereby compressing the intermec'liatesprings W' until the intermediate followers U contact withfeach other. Further movement will .result in alexing of the bodies of plates in the manner heretoy fore described and the supplemental followers being acted upon by the intermediate springs will resist-the flexing of the plates and, at the same time, hold said plates in intimate frictional contact. Obviously, the preliminary movement may be made of any desired length by separating the intermediate followers morel or less and, in fact, it is entirely practicable to dispense entirely with one of the sets of plates, together with its intermediate and supplemental followers.

lVith all of the embodiments illustrated and, in fact, with the present invention embodied in any structure for absorbing relative movement of bodies, it is obvious that the elastic resistance to nal movements may be made as great as desired, without permitting the parts to come up solid, and at, the same time the size of the device may be kept within practicable limits. Itwill `be further noted that 'with the present invention a relative long run or movement maybe provided for and the resistance in` lfln a mechanism for yieldingly'resisting relative movement of railway cars, the

combination with a series of elastic plates in frictional contact with each other, and followers between which the plates are flexed to form a yielding resistance member, of a supplemental yieldingly held fol- -lower engaging the body of pla-tes in proximity to their ends whereby frictional con,-

Itact between the plates is maintainedand recoil reduced.

lower and to contact in proximity to their ends with the other follower, whereby the body of plates will be flexedby relative movement of the followers, of a supplemental spring pressed follower engaging the convex side of t-he'plate's in proximity to their yends whereby iiexing of the` plates is resisted.

The combination with oppositely disposed followcrs, a series of lelastic plates in contact withe'ach other andeontacting with said folldwers in different longitudinal planes whereby movement of the followers toward each? other will fiex the platos, of a Vspring pressed supplemental follower engaging said plates on opposite sides of the center and operating to resist the flexing of the plates.

5. The combination with the oppositely disposed main followers movable in the same direction, stops for limiting the movement of one of said followers and a. spring pressed supplemental follower having projections extending beyond the face of onelof the main followers and adapted when advanced by its spring to move said main follower away from its stops,V of a yielding body formed of a plurality of flexible plates interposed between said followers.`

6. The combination with the oppositely disposed main followers movable in the same direction, stops for limiting the movement of one of said followers and@ spring pressed supplemental follower engaging one of the main followers to move the same away from its stops when advanced'by its spring and having projections extending beyond the face of the follower, of a vyielding body formed of a plurality of curved flexible plates inter- I posed between said followers the convex sides of said body of plates being in engagement with the supplemental follower and main follower with which the supplemental follower. cooperates, and the ends of the concave face of the said body of plates being in engagement with the opposite main follower.

7. The combination with a spring pressed su Vlemcntal follower havin@ end )ro'ec-` tions, a main follower having. apertures through which said pro]ect1ons extend and stops for arresting the movement of the main iso` tending beyond tbe face of one of said main followers and an elastio body formed of superposed curved plates interposed between the main followers and in position for the projections of the supplemental follower to en age the convex face of the elastic body.

In a bufng mechanism for railway cars, the combination with' the center stem,-

nary spring, of an elastic body ofplates in rear of said follower, a rear follower against which said plates rest, stops for limiting the rearward movement of therear follower, a

supplemental rear follower having projeC-.

tions extending beyond the face of the rear follower in position to engage the elastic body of plates, and rear springs cooperating with said rear, main and`supplemental followers for holding the samenormally advanced. n

RICHARD' D. GALLAGHER, JR. Witnesses: I

ELIZABETH M. URQUHART,.

A. `W. TAYLOR.

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