US561548A

US561548A - Car-coupling

Info

Publication number: US561548A
Authority: US
Publication date: 1896-06-02
Anticipated expiration: 1913-06-02

Description

(No Model.) 2 Sheets-Shet 1. J. MGMAHON. GAR COUPLING.

No. 561,548. Patented June 2, 1896.

ANDREW RGRAMAM. PNOTO-LITHQWASNINGTOK I16 'llwirnn STATES PATENT Orricn.

JOSEPH MCllilAIlO N, OF DENVER, COLORADO.

CAR-COUPLING.

SPECIFICATION forming part of Letters Patent No. 561 ,548, dated June 2, 1896.

Application filed December 16, 1895. Serial No. 572,360. (No model.)

To [0% whom it may concern.-

Be it known that I, JOSEPH MCMAHON, a citizen of the United States .of America, residin g at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Oar-Couplings; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the artto which it appertains to make and use the same, reference being had to the accompanying drawings, and tothe figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in car-couplers; and it consists of the features hereinafter described and claimed, all of which will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a vertical 1ongitudinal section taken through two drawheads equipped with my improvements, the link being coupled in one draw-head and about to enter the other. Fig. 2 is a vertical crosssection taken through the draw-head on the line 00 00, Fig. 1. Fig. 3 is a top or plan view of the link, shown in detail. Fig. 4 is an underneath view of the coupling-pin.

Similar reference characters indicate corresponding parts in the views.

Letthe numeral 5 designate the draw-head recessed to receive the link 6. The draw-head is provided with apertures formed in its top and bottom. The link is provided with two slightly-elongated apertures 6, and its extremities are beveled, as shown at 6. The central portion 6 of the link is solid, and it is reinforced on each side of the apertures 6 by oval projections 6 The pin 7 is also of special construction. Its lower portion 7 is circular in cross-section and provided with a beveled face 7 formed 011 its rear side and a ro unded or beveled face 7 J formed on the front side when in position for use. At the upper extremity of this beveled face 7 c is formed an offset 7 The upper portion 7 g of the pin, or that above the part 7 is rectangular in crosssection, the length of its longer side being the diameter of the part 7 a of the pin, while the length of the shorter side is about half the length of said diameter.

Hence there are horizontal shoulders 7 formed on the pin and lying in the horizontal plane separating the parts 7 a and 7 The top of the pin is provided with a cap 8, held in place by a pin 9, passed through coinciding apertures formed in the cap and pin. The cap is recessed to receive the pin and its top is provided with an aperture 8. The top of the draw-head is provided with a boss 5, upon which the cap rests. This cap being larger than the hole in the draw-head supports the pin in position. The pin, with the cap detached, is inserted in the bottom of the draw-head through the aperture 5, which is circular. The aperture in the top of the draw-head is composed of a circular portion 5 and a rectangular portion 5 This rectangular portion 5 of the aperture allows the portion 7 of the pin to rise sufficiently to permit the link to enter the drawhead or assume the coupled position. The offsets 7- of the draw-head lie in a horizontal plane separating the two

portions

5 and 5 of the opening in the upper part of the drawhead. Hence these offsets lie in the path of the shoulders 7 of the pin as the latter moves upward and prevent the pin from leaving the draw-head via the top opening through. accident or otherwise.

After the pin has been inserted inthe drawhead in the manner heretofore stated the cap 8 is applied to its upper extremity and secured by the pin 9, which is fastened by riveting or otherwise.

From the foregoing description the operation of my automatic coupler will be readily understood. Assuming that the locking-pin 7 of one draw-head engages the aperture 6 in one end of the link, the opposite end of the link will engage the beveled face 7 J of the pin and raise the latter sufficiently to allow the link to enter to the coupled position as the cars approach each other.

The construct-ion and arrangement of the parts should be such that the two draw-heads will engage each other the instant the pin drops to position in the hole of the link, the object being to relieve the link and pin from the strain to which they would otherwise be subjected.

Having thus described my invention, what I claim is- In a car-coupler, the combination with the draw-head, of the link having apertured, beveled extremities, the central portion between the apertures being solid the pin having its lower portion 7 circular in cross-section, and its upper portion rectangular in cross-section, the pin being beveled in the front and rear as described, and a cap attached to the top of the pin and apertured to receive a lifting connection, the draw-head being apertured below the recess to allow the pin to pass upward therethrough the aperture above the recess being cored out to allow the pin to rise during the operation of coupling, the upper portion of the aperture in the draw-head being rectangular in shape whereby offsets are formed lying in the path of shoulders on the pin, substantially as described and for the purpose set forth.

In testimony whereof I aiiix my signature in the presence of two witnesses.

JOSEPH MCMAHON. \Vitnesses CHAS. E. DAWSON, ALFRED J. OBR EN.