US253838A - Car-coupling - Google Patents

Description

(N0 Model.)

G. BUTLER.

- GAR GOUPLING.

No 2533838. Patented Feb. 21.1882.

.- :UNI TED STATES PATENT OFFICE.

GEORGE BUTLER, OF OINCINNATI, ,OHIO.

CAR-COUPLING.

SPECIFIC'A'IION forming part of Letters Patent N0. 253,838, dated Februar? 21, 1882.

Appiication filefl August 12, 1881.

' durable.

tion.

The precise natureof my present invention will be apparent from the drawings and the following desei*iption.

Referring t0 the drawings, Figure 1 is a perspective view 0f the under side of my invention, anti Fig. 2 is a top view, partly in sec- I ig. 3 is a detaehed view of one of the features consituting the improvements over my Letters Patent N0. 213,974.

A metallic case or eylinder, M, composed of two members, O C, is provided, and is here shown having a reetangnlar exterior and cylindrieal internal contormatioix. This case is suitably secured to the cm. In thepresentinstanee it is placed between the usual draft-timbers or sills, A A, the case being made of a. desired size .and broad enough, or the draft-timbers brought near en ough together, to admit 0f the case being fitted snugly between and against the timbers or sills. The ease 01' eylinder is provided with projectin g tongues 0 c, eaeh of whieh fits snugly in a groove in'its respective adjacenn side timber, and the esse is further secured in position betwe(an and to the timbers by means of the bolts D. The freut; und back Walls of the eylinder or esse have in their parlv in g-line circular orifices E, counterbored. f0r the reception of correspondingly-formed sleeves or thimbles F F, the eylinder er spriug-case be in g construeted, as shown, to correspond t0 the diameter and length of the spring B, together with washers I I. The spring H is inserted wit-hin the case between the washersl l, and presses said washers snugiy ngainst t'ne inner walls of the eylinder. The washers I l form a firm bearing for the spring H, :ind also, when 'at rest, operate to retain the sieeves F in position Within the counterbores, each washer (N0 modei.) y,

also operatin g as a flange or extension of its adjacent sleeve, the flanged neoks of said sleeves preventin g the passage without or beyond their proper position within Lhe oireular orifices before mentioned, as clear] y shown in Fig. 2. After the ease, with its neeessary appendages, is in position and secured to tl1e ear the rod G 1:nay be inserted in the draw-head K, seid rod being secnrely retained therein by the head g, after which said rod may be passed through the ease, sleeves, and washers, and the inclosedspring meehanism, as shown in Fig. 2, and secured therewith by a key, K. The draw-head Kis here shown as restin g upon the usual cnrryiron, B, connected to the draft-timbers A A. The rear end 0f the draw-head is enlarged preferably to nearly the diameter of the spring H, the object of which is to forrn a good bearingsurface, so that there may be 110 danger of derangement er fracture 0f the spring-case m er its appendages.

lt is plain that the spring 0r its adjacent attachments are not disturbed by the withdrawl 0f the rod G for the purpose of substituting a new head for a broken one orfor other cause.

The springc ase maybe withdrawn f0r repair or inspeetion by first removing the draw-bar and serew-bolts and then withdrguwin g the ease vertically from its place between the draft-timbers. Afterliberation, as abovethe two halves of the case may be separated, so as to fully expose the spring and other contents.

The device as described thus far is sixnilar t0' the deiice covered by my aforementioned Letters Patent, the purpose ot' said devioe being 110 prevent the destruetion of the spring by undnejamming, this advantage being obtained by t-be end of the draw-hend on the 0ne side coming into contaei: witl 1 the front wall, y, and the key K coming in oontaot with the back Wall 0f the box O C, according es the drawhead receives a thrnst or draft strain, before the different coils 0f the spring come in couiaet wil:h each other, and thus the spring cann0t bejammed. I have, however, fonnd in prac- Lice that the key K isliabletobe bent or broken by eon tinued striking against the spring-box, as a space equal to the thickness 0f thesleve F is lefl: between the point where the key bears againsb the wall of the box and the point where it receives support; from the rod G, and a greater purehase is therefore brought to bear upon the key than if no such space were left. T0 evereome this objeetion, 1 have devised the means which eon stitute the p1i neipal featu re ofmy present invention. This consists in providin g the sleeve F at its outer eud with a circular flan ge er collar, J; and this flenge, instead ofthe keyK,

comes in contaeo With che end of the box G C,

and thus very mueh 0f the strain is removed from the key K, es the surface against whieh it bears extends down to the point; where the key receives its support from the rod G. Great benefit is therefore derived from the seid improvement.

As a further means of strengthening my device and guarding against damage from a sudden and severe eud-thrust, I coustruct the drafttimbers A A wich shoulders h, agai nst which the rear end of the spring-box rests, as shown, 20

and this, in connection With '[h tongues c aml their corresponding grooves, gives great strength t0 the device.

Wha1elaimasnewandof myinvention,and desire to seeure by Letters Patent, is

In a ear-eoupling device, the combinat1on 0f

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