US721345A - Knuckle for couplings. - Google Patents

Description

No. 721,345. PATENTED PEB. 24, 1903..

KNUCKLE POR vGOUPLINGS.

APPLICATION FILED Dnc. f2, 1901.v

N0 MODEL. Y 3 SHEETS-SHEET l.

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No. 721,345. PATENTBD P14-"13.24, 190s.

"5. G. WASHBURN.

KNUCKLE PoR coUPLlNGs. APPLICATION FILED DEO. 2, 1901.

No MODEL. y A a SHEETS-BEBE; z.

/l l 4Z i neapolis, in the county of Hennepin and State UNITED STATES PATENT OFFICE.

EDWIN C. WASHBURN, OF MINNEAPOLIS, MINNESOTA.

KNUCKLE FOR coUPLlNGs.

SPECIFICATION forming part of Letters Patent No. 721,345, dated February 24, 1903. Application iiled December 2, 1901. Serial No. 84.7391. (No model.)

To all whom t may concern;

Be it known that l, EDWIN C. WASHEUEN, a citizen of the United States, residing at'Minof Minnesota, have invented certain new and useful Improvements in Knuckles for Coup- 1ers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My present invention has for its object to provide an improved knuckle for car-cou plers of the Master Car-Builders type; and it consists of the novel construction hereinafter described, and defined in the claims.

A knuckle constructed in accordance with my invention is illustrated in the accompanying drawings, wherein like characters indicate like parts throughout the several views.

Figure 1 is a plan view of the knuckle. Fig. 2 is an elevation of the same looking at the same in the direction indicated by the arrow yzbn Fig. 1. Fig. 3 is an elevation looking at the knuckle in the direction indicated by the arrow g3 on Fig. 1. Fig. 4 is an elevation looking yat the knuckle in the direction by the arrow @/4 on Fig. 1. Fig. 5 is a horizontal section through the knuckle, takenn on the irregular line x5 x5 of Fig. 6; and Fig. 6 is a vertical section taken onfthe irregular line m6 006 of Fig. 5.

The knuckle is 'of course in the form of an integral casting, usually of steel. Of the parts of the knuckle the numeral 1 indicates the hub, the numeral 2 the tail or shank, and the numeral 3 the bumping-head or outer end portion. The tail 2 carries a segmental pinsupporting flange 4, and the projecting edge of the head 3 is, as is ordinary, divided or notched to form ears 5, with ordinary pinseats 6. It is important to note that the tail or shank 2 tapers outward or, in other words, iiares inward and blends or runs into the hub 1 without forming an abrupt shoulder therewith, as is usually the case. In fact, this shank tapers outward on all four sides, so that it is given somewhat the form of a truncated pyramid. Another feature of my invention is directed to the manner of coring out the interior of the knuckle. The hub 1 is at its interme- .scale thereof.

diate portion divided, so as to aord an eX- panded chamber 7, which is intersected by the pintle'- seat 8, which extends vertically through the said hub. The tail or shank of the knuckle is cored out t0 form a tapered chamber V9, which follows as closely as possible the outline of the exterior of said tail or shank, and thereby forms the said tail With a shell of approximately equal thickness. By a vertically-extended core the bumping head or portion 3and portions of the ears 5 are cored out to forma chamber 10. (Best shown in Figs. 5 and 6.) The said chambers 7, 9, and 10 are all in communication and may be formed by a single core. By this chamber 10 ,the outer bumping portion or head of the knuckle, as well as portions of the ears 5, are made of shell-like form in contradistinction to solid or block-construction. To reinforce the walls. of the bumping head Vor section 3, endless reinforcing-ribs 11 are run in horizontal planes withinthe chamber 10. Between the said ribsll the wall of the said section 3 is preferably thickened, asshown .at 12. The

. ribs 11 and 12 greatly stien the face or front wall of the bumping-head 3 and prevent the same from being indented.

Experience has shown that steel and malleable castings when cast hollow and properly ribbed are stronger than when cast solid. This is probablydue to the fact that they are more Velastic and to the furtherfact that the strongest part of the casting is the skin or Hence I believe the knuckle described to have increased strength and decreased Weight..`

A single core or a core the parts of which are rigidly connected may be used to core out all of the cavities or recesses of the knuckle, including the pintle-seat 8. That portion of the core which forms the pintle-seat will, as is usual, project at its ends and be suitably anchored in the sand. It therefore serves to keep all the portions of the core in proper alinement and relative position. At theeX- treme end of the knuckle-tail is shown a perforation 13, through which a portion of the core may project to assist in anchoring the core in proper position in the sand.

What I claim, and desire to secure by Letters Patent of the United States, is as follows:

1. A coupler-knuckle having its bumping head or end formed with vertically-spaced and l seat intersecting the intermediate portion of perforated ears, and with said head and portions of said ears cored out by a cavity which extends into the body of the knuckle and is 5 reinforced by an endless internal flange eX- tending in a horizontal plane, substantially as described.

2. A coupler-knuckle of the character described cast hollow by a cavity extending 1o throughout its tail or shank, bumping head or end and intermediate portion, and a pintlesaid cored cavity, whereby a single or rigid core may be employed, substantially as described.

In testimony whereof I alix my signature in presence of tngo witnesses.

EDWIN o. WASHBURN. i

Witnesses:

ELIZABETH KELIHER, F. D. MERCHANT.

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