US395888A

US395888A - Henry p

Info

Publication number: US395888A
Authority: US
Publication date: 1889-01-08
Anticipated expiration: 1906-01-08

Description

(No Model.)

H. P. FISKE. METHOD OF FORMING MEEAL BLANKS FOR GAPPING NAILS No. 395,888. Patented Jan. 8, 1889.

UNITED STATES PATENT OFFICE.

HENRY I FISKE, OF \VATERBURY, CONNECTICUT, ASSIGNOR TO THE AMERICAN RING COMPANY, OF SAME PLACE.

METHOD OF FORMING METAL BLANKS FOR CAPPING NAILS.

SPECIFICATION forming part of Letters Patent No. 395,888, dated January 8, 1889.

Application filed June 25, 1888. Serial No. 278,123. (No model.)

T0 (6 1071/0722 it may concern.-

Ile it known that I, HENRY P. FIsKE, of \Vaterbury, in the county of N ew Haven and State of Connecticut, have invented an Improvement in the Method of Forming Metal Blanks; and the following is declared to be a description of the same.

My present improvement is adapted for use with a machine for making decorative nails, t'orwhich. I filed an application for patent under date of September 23, 1887, Serial No. 250,3 3? 2, which application was duly allowed April 13, 1888.

In the method of forming metal blanks before my present invention it was usual to out said blanks either from a strip of metal which was wider than the blank when out orto out said blanks from a sheet of metal, in either of which cases there was a good deal of surplus metal lorming scrap which it was necessary to remelt and roll for further use.

The peculiarityof my present improvement in the method of forming metal blanks consists, essentially, in cutting the metal blanks from a strip of metal that is narrower than the diameter of the finished blank, and in the carrying out of my improvement I employ a die and matrix for cutting and forming the blank, the recess in the matrix being about as deep as the thickness of two blanks, the die in entering the matrix cutting the blank, and when the same brin the blank up against the base of the depression said blank is spread to completely fill the opening in the matrix, and is made thinner by the spreading operation, and an annular rib is formed on one face of the finished blank.

My improvement relates especially to blank.

"from which are formed decorative nails; but

blanks for any other purpose may be cut in the same manner.

In the drawings, Figure 1 is a front elevation of the strip of metal and the face of the e matrix. Fig. 2 is a longitudinal section of the die, matrix, and strip of metal just before the cutting-of the blank. Fig. 3 represents separately the blank cut. Fig. 4. represents the face of thc'die, and Fig. 5 a longitudinal i l i section of the die and matrix and strip of metal and the completely-formed blank. Fig. 6 is an elevation of the finished blank.

(1 represents the strip of metal; I), the body portion of the die, and 1) its cutting-face. 0 represents the matrix, and c the depression in the same. 6 represents the cut blank, and e the finished blank.

By reference to Fig. 1 it will be seen that the width of the strip of metal from which the blank is cut is considerably less than the diameter of the depression in the matrix, and also of the face I) of the die. In the operation of the parts I prefer, as shown in the drawings, to feed the strip of metal a vertically to the cutting device, which device, in making the cut, as will be seen from Figs. 1 and 2, separates the blank, like the one shown in Fig. 3, from the strip of metal a, forcing the same into, the depression 0, the small triangular points at 1 constituting the waste or scrap. The further movement of the matrix 0 against the die I) forces the blank 6 to the bottom of the depression c, the movement of the parts being continued to compress the blank and spread the same in, the depression 0 until it completely fits the same into the shape shown in Fig. 6, the finish ed blank being thus made thinner, and also the metal, by compression, harder. 'lhe finished blank may be pushed out of the depression in the matrix in any desired manner preparatory to other blanks being cut and finished.

I have shown in Figs. 2, 4, and 5 the face of the die with an annular depression which serves to form the annular rib on one face of the finished blank, this being adapted to receive the nail-head in formin g decorative nalils.

It isapparent that in my present improvement there will be very little waste metal or scrap requiring remeltin g for further use.

I am aware that bars of metal have been cut off to form blanksand carried into a die and spread laterally by pressure to fill the die; also, that in the manufacture of sheet-metal nail-heads dies have been used to cut out a full-sized blank, and then to form a circular rib or cup that receives the head of the nail.

In my present inolhml 1111 Two operall'iuns11 1-0 ing the blank 111d forming :11 circular lil) upon IO made use of so as to save nmi'vrinl 11ml 'l'm-ili- (1110 surface and si11111'li'a n00uslyspreading the 1:110 the 1111111111'1101'111'0. 111011111 laterally in [ill the (lie, suhsimii ially 51.;

The method hvroin spmjviliml (1f .l'mrining Signml 111' 1110 this Elsi] (lay of June, 1888. 11101111 blanks, iho smne consisting in milling IIENR Y T. FISKE. :1 pinto of 11101111 by Sllll'ilhlf (lies l'rmn n strip 111' sheet 01 11101111 which is nal'l-mvvr in width T112111 iliv [inisllwl l1l:111l ,:1n(l iilwn mlnpi'vss- W it nosses:

GEO. '1. PINUKNEY, 111111111: (1. M011.