US96782A - Car-coupling pins - Google Patents

Description

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FREDERICK W. DAVIDSON, OF CLEVELAND, OHIO.

Letters Patent No. 96,782, dated November 16, 1869.'

IIPROVED MACHINE FCR ROLLING- CAR-COUPLING- PINS.

The Schedule referred to in these Letters Patent nnr making part of the s'zune.

I, FREDERICKNV. DAVIDSON, of Cleveland, in thecounty of Cuyahoga, and State of Ohio, have invented certain Improvements in a Mill for Rolling Shackle or Car-Coupling Pins, of which the following is a specitication. l

The nature of this invention relates to the construction of a mill for rolling shackle or oar-coupling p ns direetlyinto bars, the pins being-formed-wth heads having eyes for attaching a chain.

Figure 1 is a side elevation.

Figure 2 is a vertical cross-section.

In the accompanying drawings- A represents a frame for supporting the rollers B B, which rest ou a suit-able bed-plate, C.

In the frame Aare the boxes d, for the rollers B B.

On the top of the frame there is a bar, e, and screws e' e', which hold the boxes in place.

The rollers are connected by gear-wheels g g.

The rollers B B, as will be seen in fig. 1, have grooves a a around them, which are formed at proper intervals required for the length of pins, with a space, a', larger than the groove, and broad enough to make-a head to the pin.

Within this space'is a pointed projection, b, .which punches a hole in the head, and at the same time spreads the metal intothe space a', thus forming the head. The two rollers being. alike, the projections and spaces meeting produce this result.

The projections b may have a hole through them, in the lower roller, asA seen in fig. 2, so that a ksmall portion of the metal may be out and pass int-o the centre of the rollers, which are hollow.

The groovesy at af', near the head-space, are reduced in size to form a point to the pins, but do not out them entirely in two, so that the pins are rolled out into long bars, and may he broken apart as maybe wanted;

Other grooves, c c, in the rollers, larger than the grooves a a, are for first reducing the iron into bars before passing them through the grooves a a, and the grooves may be round or tlat, as represented.

By the use of a rolling-mill, of the construction described, sh ackle-pins used in coupling `railway-cars may be very rapidly and perfectly made, at a much less cost in time and labor than in the ordinary way.

I claim, as my invention- The rollers B B, having grooves a, a formed around them, with the spaces aand projections b to form the heads, and the projections a" to form the points on shackle-pins, substantially in the manner Vshown and for the purpose set forth.

FREDERICK W. DAVIDSON.

Witnesses GEO. W. TIBBrrrs, A. J. MARvlN.

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