US1184708A - Draft-rigging. - Google Patents

Description

F. S. ARTER.

DRAFT RIGGING. APPLICATION-mio vc.2|, 1914.

1,184,708. Patented Muy 3o, 1916.

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Patented May 30, 1916.

2 SHEETS-SHEET 2.

F. S. ARTER.

DRAFT RIGGNG.

APPLICATION man 05021. 19m.

FREDERICK SHAW ARTER, 0F CLEVELAND, OHIO.

DRAFnRIGGI'NG.

Specification of Letters Patent.

Application filed December 21, 1914. Serial No. 878,317.

lie it known that I, Fnnnrznicli S. ARTER, a citi/.en of the United States, resident of ('leveland, county of Cuyahoga, and State ol Uhio.y have invented a new and useful improvement in Draft-Rigging. ofv'hich the following is a specification, the principle ol' the invention being herein explained and the best inode in which Ihave contemplated applying that principle, so as to distinguish it from other inventions.

4vMy invention relates to draft-rigging for railway or similar cars, its object being to provide a draft-rigging which will Ybe 'econonucal of construction and eliiclent 1n lts operation.

` -pulled outwardly.

The said invention consists of :means hereinafter fully described and particularly set forth in "the elain'is. l

' The annexed drawings Vand the'following description set forth irrdefail certain means embodying my invention, the disclosed means,` however, constituting but one of various mechanical 'Afin-ms in which the princi ple of the invention may lbe applied.

`In said annexed' drawings :*Figure 1 rej'nfcsents a plan of a draft-rigging em` liodying my invention and showing the end portion of the longitudinal sills of a carin' connection therewith, the parts of the rigging being shown in, their normal posit-ion. Fig. 2 representsa side elevation of the mechanism'` and [iartssl'iown in Fig. 1. Fig.

3 represents a. longitudinal vertical section taken upon the plane indicated by )line llIIlI in 1.

Fig. 4 represents a transverse section taken upon the plafne in-y dicated byline 1V`1V in Fig. 1, part of the.elements,however, cut bythe plane of section lacing shown in elevation. Fig. 5

` represents a view similar to Fig. 1 showing the-parts in` the positionin whichtheidrawar is-.pushed inwardly. f Fig. (i is a view similar to that of 1 showing the parts in' the position in In the illustrated embodiment of my invention, the main longitudinal center sills 1 Y are utilized to form the main support for the draft-rigging, as is customary.

Each of the end portions of the opposing vertical faces of the sills is provided .with a draft plate 2, as is also customary. This draft plate is provided with two sets of opposing abutments 3, 3, and 4,V 4, as clearly shown in Fig. 1 and seated between each of .Upon this central which the draw-bar is t-on and piston rod. Aably provided with a these pairs of ahutments is a follower plate o. Secured to the under side of the sills and extending laterally from the outer faces of same is a frame (i, the centrall'iortion 6' of which has its upper face flush with the bottom faces of the sills, as shown in Fig. 3. portion rests the strap 7 ofv the draw-bar. In the rear end of this strap is secured a follower block 8 and t0 the'front end of said strap is secured the rear end of the main elenient or casting 9 of the draw-bar. The follower plates 5 are located upon the inside of such strap, as shown in Fig. 3, and a coil spring 10 is located between the opposing faces of these follower plates and tend to push the latter apart and cause their outer faces to 'respectively engage the outermost and rearmost ab um'ents 3 and 4, as shown in Fig. 1.

Thelfcfiiaw-bar casting 9 is formed with a horizontal slot ll'into which projects the ends` of two horizontally extending levers'4 12, 12,' these ends being superimposed, as shown in Fig. 4. The ends of this slot are provided with friction or wearing 4plates 13, 13, which receive the direct Contact of these lever ends, as shown in F ig. 1. levers are pivoted at 14 to castings 1.5 which are secured to the inner opposing faces 0f the sills 1` and extend through slots 16 formed in the latter. The outer ends of these levers are pivotally connected With one end oflinks 17, 17, the other ends of which are pivotally connected with horizontally extending levers 18, 18, pivoted at 19 to the. ,lateral extensions of the frame 6. The other ends of these levers 18 are pivotally connected with the front end of a piston rod 20, as shown in Fig. 'lhis piston rod connected with a piston 21v which operates in a cylinder 22 which is secured t0 the sills l, as shown in I`ig. 3. This cylinder may be filled with. any suitable fluid, air being, however, preferably used.

The pivotal axes ofthe levers 12 and 18l are'so arranged: that a given movement of the draw-bar will 'effect a movement of greater amplitude onl the part of the piston rod and piston. he device illustrated, this arrangement is such that "a, given movement of the draw-bar willfresult in four times such movement on the part of the pis? The' piston is preferthrough which 'the fluid may pass from one side to theother thereof.

small opening. ',23-

C that a pushing force-is applied to the draw- The above described device operates as follows z-Assuming now that neither a'pulling or pushing force is being applied to the draw-bar, if the parts d not occupy their normal positions, as illustrated in Fig. 1, the spring will exert force against one on the other of the follower plates and'move the draw-bar and connected parts into such normal position. In this position the two follower plates abut those members of the pair of abutments which. arel farthest removed. The location of the' cylinder .22 is such that in this normal position of parts, the piston occupies/a central position in such cylinder, as shwn in Fig. '3. Let it be assumed now bar .as is the casewhen another car is backed into the car carrying the above-described detachedpiston 21. ofthe vcylinder-'is vice, for the purposeof coupling them together. When this force is 'so applied, the

:draw-bar is pushed inwardly, which movetheactuation of the 12, 12, and through thus compressed and acts Aas a buffer absorbing the initial shock. During such movement of the draw-bar, the outermost Ifollower plate 5 is. carried rear-- wardly, imparts its movemeifitto the spring 10 which in Aturn imparts its movement to `the Yinnermostl follower" plate 5. --A .con-

tinuedapplication v vof this V,force #causes thel outermost follower vplate to lengage the infnermost abutment 1 and thus impart the movement-to the draft lates 2, ltheV 'sills 1, and thus to the `car itsel this engagement between the follower `plate and draftv plates occurs,"ihowever, the shock of the first impactlwill'be ,Y `taken up by the fluid inthe cylinder; yAir-"Tasa fluidl for absorbing' this initialshoek is.' thus rendered Aespecially efficient by reason of.

the employment of the-previously described structure by -meansof1which` the movement `of the draw-bar eiectsagreatly increased amount of movementyonthepart of the piston, .as will be readily understood by' those skilled fin the art. position ofthe parts-as last Ilio'wn' in Fig. 5, the piston lin this casel occupying its extreme innermost position,"y Assuming -now that the pushing ,force is removed. andthedraw-bar thus re-.

lievcd, the. spring, ting the innermost'of thetwo .follower plates I `it's'innermost. end abutvwhlch in turn abi'itsfthe innermost of the fahfiitmentsj, willleiiert a forge outwardly;V

. against the voutermostfollovver plate, which force will tend toyiiiove spring Wlllbe Y, Y uif'gnailoperating-Jagainst. the innermost .provided to assure the previously- L ridescrib'ed intermediate connections, thev actu- 25".:Jv ltion inwardly of the piston rod` 20 and at- The fluidin the inner end A struction which would the' innermost fol-' lower4 plate 'being'pushedlby the spring against; the v innermost. abutment `3. Before y sorber; a system of l and means tending systems each the parts back vinto This action of theby the compressed side of the piston and in 4fact this air pressure will itself be sufiicient in some cases to effect this movement where the piston and cylinder are absolutely air-tight as well as theengaging surfaces of the piston-head and.; piston-rod. The spring, however, is the assumption of the parts of their normal position, should the piston not be absolutely lair-tight, and in case a continued'force applied to the drawban were to hold such piston in its innermost position, the air would leak from the high pressure side to the low pressure side and a state .of equilibrium be produced which would prevent the return of the parts to their normal position without the aid of the spring,

A pulling. force applied-to the draw-bar will effect the Same operation above described with the exception that the parts in which the piston occupies the outermost end of the cylinder, and motion is applied tothe car through the engagement of the innermost follower plate with the outermost abutments 3, as shown. 'Y

Instead `of resorting to the nicetiesof conrender the piston and cylinder absolutely air-tight, I prefer to pro-.

vide a definite leakage betweenthe opposite sides of the cylinder through `the piston,

ployed, the operation of the fspring 10 is facilitated, as will be understood.

and for .this purpose the aperture or-opening -23` is provided. When such aperture is leinwhichl the usual car constructionis lnot -al- Y vtered and in which'the usual type of draw"- bar and draft-plates may Havingv fully be employed. described my invention,

what I'claim'and desire `to secure by Let-l ters Patentis 1. Ina draft-rigging, a draw bar; a fluid controlled shock ablevers extending laterally on each side of necting the 'latter with said shock-absorber; to maintain the partsof said shock-absorber and draw-bar A,in a noi'- mal position.

the combination of said draw-bai' and con- .I

2. In a draftrigging,ithe combination of .I

.-a draw-bar; a fluid-controlled shock-ab'- soi-ber; two duplicate systems of levers ex-v 1 tending respectively from opposite sides of and connected with said draw-bar, said lever sorber; a system ofv levers vextendinglater- ;ally lof said draw-bar and connecting the .latter with said shock-absorber; and means 18 connecting said shock-absorber with said draw-bar; and means tendmgtoA

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