US111177A

US111177A - Improvement in dies for making felly-plates

Info

Publication number: US111177A
Authority: US
Publication date: 1871-01-24
Anticipated expiration: 1888-01-24

Description

UNITED STATES PATENT Crimes.

ALLISONiN. CLARK, OF PLAINVILLE, CONNECTICUT.`

IMPROVEMENT IN DIES FOR MAKING FELLY-PLATES.

Specification forming part of Letters Patent No. l l l, L77, dated January 24, 1871.

To all whom it may concern,.- A

Be it known thatI, A. N. CLARK, of Plainville, in the county of Hartford, and in the State of Connecticut, have invented certain new and useful Dies for Felly-Plates; and I do hereby declare that the following is a full, clear,

and exact description thereof, reference being had to the accompanyingidrawngs, making a part of this specification, in which- Figure l is a perspective View of the die for thinning the edges ofthe felly-plate; Fig. 2, a vertical central cross-sect1on of the same; Fig. 3, a plan view of the plate before the edges y are thinned; Fig. 4, a plan View of the plate lthe top center ot' which is a depression, a, of

lozenge forni with rounded extremities, the sides and ends beveling uniformly inwardly at an angle of about forty-live degrees either in straight or curved lines, and the bottom being upon a horizontal plane, the whole interior conformation corresponding precisely with the exterior of the plate presented in Fig. 4, or With edges a little curved.

B represents the felly-plate, having beveled, straight, or curved edges b, sloped at an angle of about forty-ve degrees, and having at either end holes c, by which it is secured to the felly.

In the operation of my device the felly-plate is first cut out of suitable sheet metal, as shown in Fig. 8, and this blank placed upon the depression a in the block A, Where it is forced into said depression by being subjected toV pressure under a drop or between rolls, or in any other convenient method. After this pressure is applied to the blank. it will be found that its edges are beveled. in correspondence with the interior shape.` of the depression. The plate is afterward iinished, by means of suit-able dies and swage-s, into the form shown in Fig. 5, when it is ready for use. The plate thus completed will have beveled, straight, or curved sharp edges onits outer side, and when placed in positionon the wheel its edges will press closely to the felly.

The advantage of the die consists in the cheapness and Vuniformity with which the edges of the plate may be thinned, and the advantages of their thinned edges consists in their neatness of appearance, which is a matter of consequence in fine carriages, and in the close finish it secures between the edge of theplate and the felly7 thus avoiding the danger of tearing off the plates, which frequently oc` curs in the crossing of railroad-tracks diagonally. Y

- Having thus set out the nature, description, and merits of my invention, what I claim as new therein is- For use jointly with a plain-faced drop or hammer, the die-block A, provided with the depression a, of the form and with the beveled or sloping margin herein described and shown.

In testimony that I claim the foregoing I have hereunto set my hand this 26th day of November, 1870.

ALLISON N. CLARK.

Witnesses:

H. S. CLARK,

Guo. D. CLARK.