US838325A - Car-coupling knuckle. - Google Patents

Description

No. 838,325. PATBNTED DEC. 11, 1906. N. F. HARRIMAN & E. B. DAILBY.

GAR COUPLING KNUCKLE. APPLICATION FILED mum, 1906.

run: NORRIS PETERS co., WASHINGTON. D. c.

UNITED STATES PATENT OFFICE.

NORMAN F. HARRIMAN AND EDMUND B. DAILEY, OF OMAHA, NEBRASKA.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed July 18,1906; Serial No. 326,723.

To all whom, it may concern.-

Be it known that we, NORMAN F. HARRI- MAN and EDMUND B. DAILEY, citizens of the United States, residing at Omaha, in the county of Douglas and State of Nebraska, have invented a new and useful Improvement in Car-Coupler Knuckles, of which the following is a specification.

Our invention relates to a wearing-strip applied to the engaging or bearing face of an automatic car-coupler knuckle, and has for its object to provide a hard metallic wearing-strip which can be readily inserted and firmly held in the said face and removed therefrom when worn without injury to the knuckle.

The invention consists in features of novelty, as hereinafter described and claimed, reference being had to the accompanying drawings, forming part of this specification, whereon Figure 1 is a top plan view of the drawheads and interlocking knuckles of an automatic car-coupler having our improved wearing-strip applied to the engaging faces, respectively, of the knuckles; Fig. 2, a similar view to Fig. 1 of one of the knuckles seen therein detached, omitting the wearing strip; Fig. 3, a vertical transverse section through the knuckle on line 3 3 in Fig. 2, showing its engaging face in front elevation, omitting the wearing-strip; Fig. 4, a similar view of the knuckle to Fig. 2, showing the wearing-strip in place; and Fig. 5, a front view of the wearing-strip preparatory to its being inserted and secured to the said face.

Like letters and numerals of reference denote like parts in all the figures.

(1/ represents the draw-heads, and b the interlocking knuckles, of an automatic carcoupler having its operatingparts constructed and arranged in the usual well-known manner. In the engaging or bearing face of each knuckle b is formed between the top and bottom surfaces of the knuckle b a recess 1 having its sides 2 for aportion of its length channeled, preferably dovetailed, With rounded corners at their junction with the inner face of the recess 1, as shown, or otherwise suitably shaped, the dovetailed channeled portions 2 of the recess 1 being open at the top of the knuckle b and closed at their inner ends 3, respectively, near the bottom of the knuckle b, where the metal is formed with a beveled or other suitably-shaped depression 4, which opens,

preferably, from the side of the recess 1 for the purpose hereinafter stated.

Within the recess 1 is inserted, preferably from above, a wearing-strip c, of hard steel or other suitable material, having its side edges for a portion of its length beveled and adapted to fit closely within the dovetailed (or other shaped) side channels 2 of the recess 1, while the remaining portions 5 of its side edges are preferably straight and adapted to fit closely between the corresponding straight side portions 5 of the recess 1, the bottom ends 3 of the beveled edge portions of the wearing-strip 0 bearing upon the closed ends 3 of the dovetailed portions 2 of the recess 1, in which position the top and bottom ends of the Wearing-strip c are flush with the top and bottom surfaces, respectively, of the knuckle 1), except that the aforesaid straight side edge portions 5 of the wearingstrip c are extended downward below the bottom of the knuckle b, as seen particularly in Fig. 5, so that when the strip 0 is inserted from above and forced home within the recess 1 these extended portions 5 of the side edges are forced outward into close engagement with the depressions 4, before mentioned, in the bottom of the knuckle b, as indicated by the dotted lines, and thereby firmly secure the wearing strip 0 to the knuckle I).

The outer or engaging face of the wearingstrip 0 corresponds in contour to the normal face of the knuckle and may extend for any suitable width across the same, while the inner face of the wearing-strip c, which is adapted to bear closely against the corresponding face of the recess 1, may be of any suitable contour therewith.

It is here noted that the above-described arrangement of the parts may be reversedthat is to say, the wearing-strip 0 maybe inserted from below and secured or clenched to the knuckle b at the top.

If desired, the wearing-strip c and recess 1 may be tapered and the sides of the recess channeled throughout instead of part Way, in which case the depressions for receiving the extended side edge portions of the wearingstrip 0 are formed in the horizontal surface of the knuckle adjacent to the small end of the recess 1.

By our invention casting-holes through the wearing-strip for holding it in place are dispensed with, and its strength, durability, and

bearing-surface thereby increased; also, as the means for securing the wearing-strip c are integral therewith it can be removed and renewed without injury to the knuckle.

We do not limit ourselves to the particular shape described of the channeled side portions 2of the recess 1 for enga ing'and holding the corresponding edges of the wearingstrip 0, as the same result may be obtained by making these portions of the recess 1 concave, square, or otherwise. Neither do we claim, broadly, the application of a wearingstrip to the bearing-face of a car-coupler knuckle, as such device has been heretofore used; but

What we do claim as our invention, and desire to secure by Letters Patent, is

1. The combination with a car-coupler knuckle, of a wearing-strip having means integral therewith, but adapted to removably clench the said strip to the knuckle rivetwise, substantially as described.

2. The combination with a car-coupler knuckle having an upright facial recess channeled part way along its sides from one end of the knuckles, and a depression opening from the recess at the other end of the knuckle, of a removable metallic wearing-strip corresponding to the recess, and adapted to be inserted therein, the said strip when in place bearing on the inner ends of the said channeled portions of the recess and adapted at one end to be clenched in the said depression, substantially as described and for the purpose set forth.

' 3. The combination with a car-coupler knuckle having an upright facial recess channeled part way along its sides from the top of the knuckle, and a bottom depression opening from the recess, of a removable metallic wearing-strip corresponding to the recess, and adapted to be inserted therein from above, the said strip when in place bearing on the inner ends of the said channeled portions of the recess, and adapted at the bottom to be clenched in the said depression, substantially as described and for the purpose set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

NORMAN F. HARRIMAN. EDMUND B. DAILEY.

Witnesses:

M. EVERETT DICK, THOMAS O. STARR.

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