US819340A - Method of making spinning-rings. - Google Patents

Description

PATH-WED MAY 1, 1906K J. R. 00B.

METHOD 0F MAKING s ATION FILED J PINNING RINGS. K

C I L P P A HAY PATENTED- MAY 1, 1906.

NG RINGS.

J. R. 00E. MAKING ATIoN H'LBD SPINNI JULY 16,

2 SHEETS-SHEET 2.

METHD O APPL WTA/[S555 2]: G'. @may ii'iriinn ,starriasA JAMES ROBERT COE, OF ASNIA, CONNECTICUT, ASSIGNOR, BY NlESNh ASSIGNMENTS, TO CONNEC'HCUT MILL SUPPLY COMP-ANY, A CORP()-V lRA'l`lON OF NEW JERSEY.

mETHoooF unione amertume-emes;

Noisiaaeo.

Specification of Letters Patent.

atented 'May 1,'1906.

i ilpplication filed July 16.1904. Serial No. 216.9015.

' formingV of doubleflanged spinning rings from sheet metal.

Single-hanged spinning-rings have heretofore-been made in various ways from sheet metal; but double-anged rings have only been successfully made by turning from -a blank.

It is the object of the present invention to produce a 'double-langed ring from sheet metal by acertain method of bending and pressing which will give it strength and durability of structure and `at the same time make possible'its manufacture at a cost coin- `paring favorably with the single-flanged ring.

Iiithe drawings, in which like characters of' reference indicate corresponding parts throughout, 'Figure 1 indicates the first die and its product; Fig. 2, the second die andl product; Fig. 3, the roller and product of the Ethird step Fig. 4, thev trimmer and the trimmed blank; Fig. 5, the closing-down-die andclosed blank; F ig. 6, the Jforming-die and formed blank; Fig. 7, aplan view of the inclosing die in Fig. 5.

Taken in their order the steps of' the operation are as follows, a brief description of the dies and rolls by which they are performed being included therewith for the sake of clearness,

2 is a cup of metal formed-from a lat disk,

which is out from a sheet of stock by the cutl ting-dies A A, Fig. i, and drawn by the reducing-dies B B-, of which B is an inner plunger carriedby the punch A.. The plunger B has 'a tapered end` portion b, which gives to the cup 2 a tapete-.i portion 2 adj acent to its bottoni.

C C represent a die Which forms from the cup 2 Ithe cup 3, Fig. 2, in which thetapered portitn 2 is 'reduced to a tubular sdction bi smaller diameter 3 by the portion'c of the die C. The shoulder between C and c is l formed with a concavecz. and between the parts -C and c is an oppositely-rounded shoulder cj These shoulders form the shoul der 32 of the cup with a curve which assists inthe forming of the liange, will appear .later S is a knock-out pin in the bottom of the die C. The opposite end of the icup 3 is th en reduced to produce the cup 4, which opH eration is performed by rolling on the arbor l), Fig. 8, with the roll E, which has corresponding anges to form the new shoulder with a similar curve and maintain the forni of the vshoulder 'rlrst formed, The varbor D has a loose ring D, which is just the size of the bottom oi' the cup 3', Fig, 2, and which is mounted to yield sufficiently to form the central rib 42 while the arbor is coacting with the roll E. The cup 4, it will be noted, now has deduced portions 4at each. end and a central rib or groove42 substantially rectangular in cross-section, but gcining the said reduced 4:portions by the curved shoulders. flhe cup 4 is then trimmed on the arbor F, Fig. 4, by

the trimmer G to remove the bottom oic the blank 4, trim the edges, andproduce the blank 5. The blank is new internally supported on a collapsiblemandrel H, Fig. 5,

which is substantially the shape of the censupported by the die I, a plan of which is shown in Fig. 7, and which corresponds to the exterior-oi said central portion of the blank, except that itsupper and lower edges t are oppositely recessed to forni withy the curved shoulder '/z, of the mandrel a semicircular cavity for the formation of the rim Jfrom whichthe iange is to be shaped. K is a second die member having a similar annular cavity l and carrying a pin L, which engages and enters the mandrel at L to center While ,said blank is supported on asimilar collapsihie mandrel to produce the ring 7 'Se tral portion of the blank 5 'and externally' i in a similar menner to the tffrof tion or ring (j. The rings thus viinirezi buii'ed or burnished to reduce thmerketable article.

The blank 5 may olwionsi)T be produced in a variety of Ways by drawing or rolling from thin stock or by forming, from thicker metal. The essential point of the invention is the internal supportingl of' the bianlr i n the coilapsible die and mandrel, Whfh allows the production of a double-flanged ringr from sheet metal by bending. The artiole thus produced is cheap, strong, and satisfactory and has the obvious and admitted advantages of the donblediangcd ring.

in. forming those rings it is usually desirable to have the flange Folded outward, so that the seam will come on the outside of the ring;v but obviously the Hedges might be turned in and the seam internallyv loeated.

fis above stated, the exact `features of the first four steps, as above described, may be variously modified, although those outlined :ire satisfaetoryfironi the stand point ol' qualityv of' product and eoononri,T of production. 4Various modifications may therefore be mede in the forms of the blanks in the manipula tion 'thereof Without departing 'from the spirit of my invention.

' What I therefore claim, and desire to secure by Letters Patent, is-

. l. The method of 'forming a double-ilanged spinning-ring from sheet metel, consisting in forming a cup hevin the loWe-r portion of the sides tapered, in re uoing seidftapered portion to-form an annuler shoulder, in forming e similar annular shoulder on the opposite end of the cup thus formed, in removing the bottom of the cup,`in closingfthe ends of the tube over, and against said shoulder, and iiattening said closed portions to' form fianges.

2. The method of forming e double-hanged iii-lished Consisting' iniln'ming a binnl al tubular portion and end tui i' slightly-ditterent dinineter, in .s pporting' said neutral portion internally, and in benriling siiiy1 ced portions, While vthe zentral portion is thus supported, and Coinpressing and flattening the bent end portions to torni iianges, substsntiall),Y as shown and described 2S. The method of forming)r a double-hanged spinning-ring, consisting in forming a blank having a central tubular portion, and end tn- 'bular portions of slightly-different diameter,

in supporting said neutral tubular portion, and in bending said end portions'while the contrai portion is thus supported, and com p ressing and ila ttening the bent cnd portions to form flanges.

4. The method of forming a double-flanged spin1iingrin, consistingdn forming a blank having e central tubular portion and end tubular portions ofslightly-ditlerent diameter, in supporting said central portion externally and internally, and in bendingr said end p01'- tions While the central portion is thus supported, and ronipressing and flattening the bent end portions to form ianges, substantiall)r as shown and described.

5. The method of orniinga double-Hanged spix'ining-ring from sheet metal, consisting in forming a tubular blank havin a central portion of one diameter, and endZ portions of a different diameter, in supporting seid central portion, and in bending, compressing and flattening the end portions to`orm flanges, While the central portion is thus supported.

l'n testimony whereof I afx my signature in presence of two witnesses.

' ,JAMES ROBERT COE.

Witnesses:

DAVID Con,

DAVID H. Con.

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