US1361087A - Draft-rigging construction - Google Patents

Description

G. C. MURRAY.. DRAFT RIGGING CONSTRUCTION.

APPucATmM H11-:D suLY 14, 1911.

lPatented Dee. 7 1920.

3 SHEETS-SHEET I.

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APPLICTION FILED JULY 14, 1917- 1,361,987.

e n ZL@ 2^" GA o. flume/w'.V DRAFT'HIGGING CONSTRUCTION. APPLICATION4 FILED JULY l, 1917.

Patented Dec. 7, 1920 sHEETs-SHEET 3.

GEORG-E C. MURRAY, F CHICAG, L'LLINOIS.

DRAFT-BIGGIING GONSTRU'CTION.

heerser.,

Specification of Letters Patent.

Patented Dec. 7, i920.

vpplication filed July 14, 1917. Serial No. 180,535.

To all whom 'it may concern Be it known that'l, Gnonon C. MURRAY, a citizen of the United States, residing at Chicago, in the .county of Cool/r and State of illinois, have invented certain new and useful Improvements in 'Draft-Rigging Construction, of which the following is av specification. t

Thls invention relates to Improvements in draft rigging construction, and has for its object to provide an improved construction of the type shown and described in my prior Patent No. 1,224,312, patented May 1, i917.

The principal object of this invention is to provide, in connection with draft riggii'ig ot that nature, improved front and back draft lugs and to provide an integral rear draft lug and center plate filler casting, also operating to tie the draft sills together.Y

Another Objectis to provide an improved front draft hip; .coacting with an improved draw-bar which, when utilized with the type 'of draft rigging shown and described in the abovementioned patent, will prevent or eliminate shearmgor bending actionupon the front cross-key, and means tdmaintam- 4the draft'links in pro er spaced relation lli? with Vrespect to the dra 't sills.

ibtill another object is to provide front ldraft lugswhich will be of suilicient strength .to receive sudden shocks ot greater capacity .than will be absorbed by the draft rigging, and capable ofrel-ieving the lrey of bending stresses due to such excess shocks.

Still another object resides in the construction of the rear combination follower and ley socket and its relation to the draft lues. l lhese 'and other objects will be more fully forth and described in the following the draft rigging lmounted therebetween,

' separate cross tie members are constructed Fig. 6 is a perspective of a key housing member;

Fig. i' is a perspective of the draw-bar; Fig. 8 is a perspective of one of the front draft lugs; and n Fig, 9 is a perspective o and connecting links.

Like numerals .refer to like elements throughout the drawings, in which l0 designates the spaced apart draft sills of the car,

f one of the keys the specilic form of which does not form a part of this invention, and 2O the draw-bar also mounted between the draft sills 10 andl intended to coact with the draft rigging, as will be more fully explained. Located be- I 'tween and riveted or otherwise suitably secured to the draft sills l0 is themember 25- ,shown in perspective in Fig. 4--the same comprising, in one, the rear draft lugs and a` center filler casting.A The member is provided with a recess or socket 25'nl formed by the cross-channel 25h extending across, between, and through the rear draft lugs 25.. Extending between the side sills 25l of the member 25-Which side sills are riveted to the vdraft sills 10m-is the horizontal flange 25d and the vertical {iange 25, 'which flanges serve to add rigidity and strength. to the structure while permitting sufficient Strength with a minimum of weight. The member 25 is provided with a socket or aperture 25t for a center pin.

:it has been found in actual use that where with the rear draft lugs mounted between. the draft sills, they must extend baclrwardly a suilicient distance and be secured along said distance to the draft m'lls to resist and provide for the bufng stresses received by the draft rigging and communicated to the rear draft lug. At the same time, lf have found it advisable to provide a cross tie member for the center pvinrasting, but this also must extend a sullicient distance in 100 either direction from the center-pin socket to take4 up longitudinal stressesand strains and, in present day construction, to provide suihci'ent strength would require an over` lf eliminate this necessity-by constructingthe center plate casting and the rear draft'. lug and -c'ross'tie member integral, whereby suiicient riveting length is provided in the one member to taire care of the longitudinal 11o lapping or interference of the twomembers. 1mi

. cated by numeral and mit the insertion therethrough which extends the key aperture 30".

shown and described a socket member coacting with the rear draft lugs by which all the bufling compression was received from the draft rigging between such draft rig ging and the rear draft lugs. There such member, rested upon and against the four rear draft lugs, the forceof compression was exerted upon the area of the following member, as stated, which contacted with the draft lugs and a comparatively small area of such follower member received the entire compression of the bufling stresses. In some instances it was restricted to the area and contactv of but one or two of the draft lugs, furthen increasingsuch compression, due to the warping or uneven contact of the follower member. l overcome this objection ,in the present construction by providing the key housing member indishown lin detail in provided with a through This vaiember 30 is further provided with a front face or portion 30C or notched as indicated by numeral 30d. Strengthening ribs or flanges 30e extend between the rear of the portion 30c andthe socket portion 30a to insure rigidity and strength. When in assembled relation, as shown in Figs. 1, 2, and-3, the socket portion30a of member 30 fits into the cavity or socket 25a of member 25 when in normal position in such wise that the cut-out portions 301 of member 30 permit the assumption of a position by member 30 whereby the Vfront surface of follower 30c will lie substantially flush with the front face of the draft lugs 25C, so that the bulling stress transmitted by the rear follower member 15a of the draft rigging will be transmitted over substantially the full'area of the key housing member 30 and the draft lugs 25c in such wise the member 30 compressed between the fol lower member 15a and the draftlugs 25C, as will be obvious.

A rear cross keyl 35 extends transversely of the draft sills 10 and through suitable apertures 10 therein, also through the aperture 30b in the member 30, the ends projecting on either side of the draft sills 10. One end 352L is downwardly turned to prevent its withdrawal, as shown i'n Fig. 9, and the other end is apertured at 35D to perof a headed pin 35, a Cotter-pin 35d being utilized therewith to also prevent withdrawal of the key 35 after assembly of they structure.

Fig. 6, this member being rearwardly extending portion 30 cut away at its corners l ing ribs that there will be no portion of,

. The drawbar 20 is provided with a cross aperture 20 extending transversely thereof. and partially surrounding said aperture. At the sides of the draw-bar 2() are'flanges 20" of maximum width at the portion nearest the upper end of the draw-bar 2O and tapering down to the surface ofv the drawf bar as shown in Fig. 7.l A strengthening rib or flange 'x20c extends from the highest portion of the flange 20 to the surface of the draw-bar to enhance the strength of said flange.

In the form of'draft rigging shown, the coupler butt or draw-bar contacts with a front follower member l0", similar to follower 15, for transmission of .bulling stresses to such draft rigging as is customary. In suitable apertures in the side sills 10 are mounted the front draft lug members 40, shown in perspective in Fig. 8, and provided with surface riveting flanges 40a constructed for riveting or suitable attachment to the side sills.A Projecting outwardly from one face of the flanges fit-Otis the flange 40 surrounding the aperture 40 and of suflicient size as to ,project some distance through the side sills 10 and closely fit the apertures provided therefor in such side sills. The draft lugs proper, 40, are formed integral with tl members 40 at top .and bottom thereof at one end, a space 40 being provided therebetween. Strengthenor flanges 40 extend from the draft lug portions 40d to the face of flange 40a. Partially surrounding the aperture 4;()c in 'the member 40 is a. triangular flange 40g extending from the face of flange 40 to its maximum inward projectionat one end of the aperture 40, this flange 40g and the draft lug flanges 40 being'so arranged as to leave a space between their points of origin at lthe flanges 40 for a purpose to be hereinafter described. v

A front cross key 35', similar to key 35 and similarly held in place, extends through the apertures in draft lug members 40 and aperture 20Il in the draw-bar20, projecting a suitable distance on either side of the draft sills 10, asshown in'Fig. 1, for eX- ample. When properly assembled, l the flanges or collars 20b of the vdraw-bai" 20 project axially along the cross key 35 some distance on either side beyond the top of anges 40e' of the draft lug members 40, as shown in Fig. 2. When, as frequently occurs in present day freight or passenger hauling, an unusual shock or' compression is transmitted to the draft gearing k15 through the medium of coupler draw-bar 20, this shock may be of sufficient power to compress the draft rigging 15' and transmit considerable of4 the shock to the side sills through themedium of thecross key 35.

i ,seiner tacted s'urface therefor will be providedby the flange 40g; since, when the key 35 is in contact therewith, the Contact of drawbar flanges 20h overlaps the contact of flanges 40, as will be obvious from an examination of Fig. l. A ny bendingfor shearing stress that the key would be subjected to were such flanges not present, is obviated, and .the key receives substantially only a compression stress which may be taken care .of by suitably designing said key. ln assembling this structure the draw-bar S2() is moved into position underneath the side sills and front d aft lug member 40 in such wise 15 that it can be lifted yinto position preliminary to inserting the key 35 therethrough, the spacing of the origin points of flanges 4W and 40g permitting this liftingand posi tioning movement.

As in the structure of my previous patent, side links or arms @l5 extend between the keys 35 and 35' outside of the sills l0, being held thereon against accidental remo al bv means of the pins 35C and down-turned ends 35 of the keys themselves. These links are aperturcd at front and back as indicated by numeral 45see Fig. 9-these apertures or slots being of such size that when the d 'aft rigging is in normal position, as indicated in 2 and l--in which position' it will fill the space between the front and a'ear i draft lugs-the links will approximately contact with the' front of the front key 35 and will be slightly out of contact with the rear of the rear key su'licient to permit the 'necessary amount of coupling travel before the 'draft gear commences to operate, and after such necessary coupler 'travel has been utilized further pull on the draw-bar 20 will 40 be transmitted to key 35 on the arms 45 to the rear key 35, which in turn will move the follower member 30 forwardly of the side sills to compress the'dratt gear. lt is obvious that such are not suited to 45 receive compression stresses, and since the draft gear receives bu'ling strains directly from the draw-bar itself, the slots are made ot' siu'iicient length to permit inward or buflfing travel of the front key 35 a distance equal to the. limitof gear travel, at which limit key 35 -will contact with the draft lug members l() so that no compression. or other -stress will be transmitted through the links 45 to the rear key will be obvious. l thicken the ends 4:5 of the links or arms 45 around the ends of the slots 45" to provide additional strengthv outwardly of the keys so to prevent the destruction of said links bywthe keys when pulling strain has been .transmitted therebetween. Furthermore, by constructing' the slots 45 of the same length at each end of the links 45 they are interchangeable, vand it would be impossible for ignorant workmen to assemble them in an incorrect manner.

-tially siuround said lugs.

It is highly desirable. to maintain the arms 4:5 in parallel relation with respect to the direction of their movement and the side sills l0, and also to maintain them out of contact with the heads or rivets, or the like, utilized to secure the front and rear draft lug members to the side sills. The `projecting flange 40h of the member 40 serves this purpose at the draw-bar end of the rigging,

and l utilize spacingwashers 50, or the like, surrounding thekey 35 at the rear end of the rigging, such spacers being located between the link members 45 andthe draft sills 10, as shown in Fig. l.

'lt will. be apparent that my invention is susceptible of modifications and improve ments, and l do not wish. to be restricted to the form shown and described, except as defined in the appended claims.

What l claim is:

l. ln combination, a coupler having a butt, a removable key housing operatively attached thereto, a key extending through said housing, and a draft lug carrying member, 'said housing having a surface normally lying substantially flush'with said draft lugs whereby butling shocks will be received jointly by said lugs and housing face.

ln combination, a coupler having a butt, a removable key housing operatively attached thereto, a key extending through' said housing, and a draft` lug carrying meinber, said housing having a surface normally lying substantially flush with said draft lugs whereby buing shocks will be received jointly by said lugs and housing face, said face being recessed to partially surroundv said lugs.

, 3. ln combination, `a :ouplerhaving a butt, a removable key housing operativel/y attached thereto, a key extending through said housing, and a draft lug carrying meml ber, said, housing having a surface normally lying substantially flush with said draft lugs whereby buliing shocks will be received jointly by said lugs and housing face, said face being cut away at itscorners to par- 4. ln combination a. coupler having a butt, a/key extending therethrough, a movable key housing, a key extending therethrough and operatively attached to said first named key, a draft lug carryingnicmber7 said housing having a surface normally lying substantially flush with said draft lugs, andy draft gear located between said coupler butt and said housing.

ln combination, draft sills, a coupler having'a butt located between said draft sills, a key extending through said butt and sills and movable relative to the latter, a draft gearlocated between said sills, means to transmit draft from said' key to said gear, and means carried by said sills and said coupler butt to prevent shearing of said key vwhen the latter is at its limit of draft movement.

6. In combination, draft sills, a coupler having a butt located between said draft sills, a key extending through said butt and sills andk movable relative to the latter, a draft gear located between said sills. means to transmit draft from said key to said gear, and members located ladjacent the limit of draft travel of said key to provide increased contact surface therefor, said coupler butt being provided with outwardly extending portions engageable with said key and extending beyond the inner ends'of said rst named means.

7. In combination, a coupler having a butt, a key extending therethrough, a draft gear, means to transmit draft from said key to said gear, and means to limit the movement of said key, said`means comprising a draft lug carrying member and inwardly projecting portions engageable by said key, said coupler butt having means coacting with said member to prevent shearing of said key. f

L 8. In combination,a Coupler having a butt, a key extending therethrough, a draft gear, means to transmit draft from said key to said gear, and means to limit the movement of said key, said means comprising a draft `lug carryingr member and inwardly projecti-ng portions engageable by said key, said coupler butt having means coacting with said member to prevent shearing of said key,

said last named-means comprising portions when the same is at one end of said slots shearing will be prevented.

10. In combination, draft sills having slots therein, a coupler butt located therebetween, a key extending through said coupler butt and said slots, and key engageable flanges at one end of said slots extending inwardly of said sills, said coupler butt being provided with portions extending outwardly from the sides thereof and beyond theinn'er ends of said iianges and at the 0pposite side of said key With respect thereto.

In testimony whereof, l have subscribed my name.

GEORGE. o. MURRAY.

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