US125751A - Improvement in dies for forming felly-plates - Google Patents

Description

UNITED TATES ATENT rFIcE.

FRANCIS B. MORSE, OF PLANTSVILLE, CONNECTICUT, ASSIGNOR TO H. SMITH St CO., OF SAME PLACE.

IMPROVEMENT IN DIES FOR FORMING FELLY-PLATES. Specification forming part of Letters Patent No. 125,751, dated April 16, 1872.

To all whom it may concern: ness of the plate to be produced, while at the Beit known that IFRANGIS B. MORSE, of edges it will be much narrower, the space Plantsville, in the county of Hartford and gradually diminishing from the center toward State of Connecticut, have invented a new the edges, as more fully hereafter described. Improvement in Dies for Forging Fell 7-Plates 5 A is the lower die, of the form of the interior and I do hereby declare the following, when of the plate, and is provided with two studs, taken in connection with the accompanying a c, corresponding to the perforations d in the drawing and letters o freference marked thereblank B, as seen in Fig. 5. C is the upper on, to be a full, clear, and exact description of die, of a form relative to the lower die, the same, and which said drawing constitutes as seen in Fig. 3, so that the space between part of this specification, and represents, inthe two dies, when set together, will be the Figure 1, a perspective View of the lower greatest thickness at the center, gradually die Fig. 2, a perspective view of the upper diminishing to the edges, and the said upper die Fig. 3, a transverse section of the two die constructed with perforationsb corresponddies; Fig. 4, a transverse section of the plate ing to the studs c of the lower die. The blank produced by the dies 5 Fig. 5, the blank from B is cut from a sheet of suitable metal, of the which the plate is produced 5 and in Fig. 6, form and size required for the plate, less so an outside view of the plate as produced nmuch as the plate will be extended in drawing, ished from the die. and is perforated at the two ends d to form This invention relates to an improvement the bolt holes. This flat blank is placed upon in dies for forging what are known tothe trade the die A, setting the perforations d of the asv felly-plates-that is to say, the plate blank onto the studs a, which retains the which is placed upon the inside of the felly blank in a central position on the lower die. over the meeting ends of the felly to hold the The upper die is struck down onto the said ends in their proper relative position. Hereblank with sufficient force to curve the blank tofore this plate has been made of an equal around the form, and which process, owing to thickness over its entire surface, or slightly the peculiar shape of the dies, as beforedechamfered around its edge; in either case the scribed, not only curves the plate, but draws additional thickness of the .plate is exposed or extends the plate from a point at or near and gives to the wheel at that point a bunthe center to the edges, gradually reducing glin g appearance. By my invention this diffithe plate in thickness from this point to the culty is overcome; and it consists in dies, conedges, as seen in Fig. 4, producing the plate structed as hereinafter described, to draw the in external appearanceas seen in Fig. 6. To plate from a point at or near the center to the form a ilat4 surface around the bolt-holes, I edges, whereby the plate is gradually reduced make a recess in the die, which would form a from the said point to the edges, so that when projection on the plate, or make a projection placed upon the wheel the internal line of the in the die to produce a fiat depression at that felly is so little changed as to be scarcely perpoint in the plate. ceptible. My invent-ionconsistsintwo dies, one 4 I claim as my inventionbeing of the form of thefelly at the place where The dies A C, constructed as herein dethe felly is to be applied, the other of a circle of scribed, for forging felly-plates.

slightlylarger radius, but from a point eccen- F. B. MORSE. tric to the center of the inner die, so that when Witnesses: one is set over the other the space between E. E. PADDOGK,

the two dies at the center will be the thick- AsA. L. FowLER.

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