Dies for Shaping Spinning Rings from Sheet Metal.
Year: 1894

page_text: Date of Application, 24th Feb., 1894-Accepted, 24th Mar., 1894
COMPLETE SPECIFICATION.
Dies for Shaping Spinning Rings from Sheet Metal.
I, MERRICK DAVID MARCY, of 31 North Foster Street, Worcester, in the
County of Worcester, and State of Massachusetts, United States of America,
Manufacturer of Mill Supplies, do hereby declare the nature of this invention,
and in what manner the same is to be performed, to be particularly described,
and ascertained in and by the following statement :—
In the drawings;
Fig. 1 represents a circular disk of sheet-metal from which the ring is made.
Fig. 2 represents in central, sectional view the cup-shaped form into which the
disk is drawn by the action of a die-press with the sheet-metal forming the sides of
the cup reduced in thickness, and with a fillet in the corner between the annular
side and bottom of the cup.
Fig. 2 represents the ring formed by removing the bottom of the cup.
Fig. 3 represents in central, sectional view, the punch and die with a sectional
view of the ring as shown in Fig. 24, held therein and showing the first operation
of upsetting the thick edge of the ring in forming the flanged track for the
traveller.
Fig. 4 represents the die, shown in Fig. 3 with the ring therein, both shown in
central, sectional view, with the ring represented in the form produced by the
action of the punch, as shown in Fig. 3.
Fig. 5 represents a die-plate and punch in central, sectional view, with a
sectional view of the ring at the completion of the operation of upsetting, and
having the thick edge of the ring as represented in Fig. 4, compressed to form the
flanged track for the traveller.
Fig. 6 represents, in central, sectional view, the punch and sectional die, with
the ring held therein by which the base of the ring is expanded, and
Fig. 7 is a view of the completed ring.
Similar letters refer to similar parts in the different figures.
My invention relates to an improved method of shaping spinning rings from
sheet-metal, and consists in providing means for holding the body of the ring
against bending, or spreading, while its edge is compressed, or upset, by the
reciprocating action of a compressing die, acting against an inclined surface in the
ring holding die, whereby the edge of the ring is crowded to one side, during
the action of upsetting and also in providing said ring-holding die with a restraining
wall, or surface, opposite said inclined surface, so as to make the edge of the ring
symmetrical with the body of the ring, and these results I secure by means of the
dies hereinafter described.
The method of making a spinning-ring from sheet-metal by means of my
improved dies is as follows: A circular blank A, Fig. 1, is cut from a sheet of
sheet-metal, and drawn into the cup-shaped form represented at B Fig. 2, that
portion of the metal forming the annular, vertical side B' being reduced, in thick-
ness by the drawing operation of the punch and dic by which it is stamped into
the cup-shaped.form.
The plunger or mail-die, by which the interior of the cup is formed, is chamfered
at its end so as to leave a fillet B2 between the annular side B' and the bottom B*
of the cup. The bottom B³ is then removed from the cup forming a ring consisting
of the annular side B₁ of the cup, provided with a thick edge C, as represented in
central, sectional view in Fig. 2.
The punch and die by which the next operation is performed is represented in
central, sectional view in Fig. 3; the die D' being provided with an annular channel

page_text: or groove D' provided with tapering or inclined sides D2, D3, and terminating at
the bottom in an annular channel D₁ having vertical, opposing walls and being of
the proper size to receive and support the vertical sides B and B of the body B¹
of the ring.
The ring, in the form represented in Fig. 2^ is placed within the annular channel
formed in the die D as represented in Fig. 3 with the side B' held in the
channel D' and with the thick edge of the ring in the bevelled channel D¹ with
the inclined side of the fillet B resting against the inclined side D³ of the
channel D'.
An annular punch E provided with a bevelled end E₁ adapted to enter the
channel D', is then brought down upon the thick edge C of the ring upsetting it
between the inclined sides D2, D3 into the form shown in Fig. 4, with the thick
edge of the ring pressed into a wedge-shape between the inclined sides D³ and D.
The straight portion B¹ of the ring is then placed in an annular channel F' of a
die-plate F, with the wedge-shaped edge C projecting above the face of the die F.
A plunger G is then brought down upon the edge C compressing it into the form
shown in Fig. 5 having an interior flange H and exterior flange H' lying in the
same plane and integral with the body B' of the ring; the flanges H and H¹
forming the track for the ring-traveller. The ring is then placed upon the anvil-
block I and between the fixed jaw I' and a movable jaw I2 having flaring faces I³, 1',
and the body B' of the ring is then expanded forming a flaring base J, as shown in
Fig. 6, so the outer edge of the flared section is preferably of the same diameter
as the outer edge of the exterior flange H'; this operation is accomplished by a
suitably shaped plunger K.
The several operations I have described are performed in a die-press employed in
sheet-metal work and as the operation of such a die-press is well understood, I
have not shown or described the same.
I do not confine myself to the specific form of the dies as shown, nor to the exact
successive steps in the process as described, as both can obviously be varied
somewhat without departing from the scope of my present invention.
Before the expansion of the base of the ring, the edges of the external and
internal flanges H and H¹ are trimmed in order to form a track for the ring
traveller of uniform width and having concentric edges, the base of the ring is then
expanded and the edge J¹ is trimmed to the size desired.
During the operation of stamping and upsetting, it will be probably found
necessary to anneal the rings and after the edges have been trimmed as above
mentioned, the completed ring is hardened by case-hardening, or otherwise, and the
surface of the flanged track thoroughly polished to fit it to receive the ring-
traveller.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination of a die for shaping a spinning-ring from sheet-metal,
provided with an annular channel having its lower section provided with opposing
walls adapted to bear against the opposite sides of the ring, whereby said body of
the ring is restrained from bending, or spreading, and having the upper section of
said annular channel provided with an inclined surface upon one of its sides,
whereby the edge of the ring is crowded toward the opposite side of the channel by
the movement of the metal along said inclined surface, by means of pressure applied
to the edge of said ring, and in a line parallel with its axis, and a compressing-die
by which pressure is applied to the edge of the ring in a line parallel with the axis
of the ring, substantially as described.
2. The combination of a die for shaping a spinning-ring from sheet-metal,
provided with an annular channel having its lower section adapted to fit the body
of the ring, and having its upper section provided with an inclined surface on one
side to crowd the edge of the ring toward the opposite side of the channel, and

page_text: having the opposite side of the channel correspondingly inclined, so the edge of the
ring when upset between said inclined sides, be symmetrical with the body of said
ring as held in the lower section of said channel, and a compressing-die by which
the edge of the ring is upset between said inclined sides, substantially as described.
3. The within described dies for forming a spinning-ring from sheet-metal and
consisting of a ring-holding die D, having an annular channel D', formed with
inclined sides D and D', said inclined sides terminating in an annular channel D',
and an upsetting die E, provided with an annular, bevelled edge E' adapted to
enter between the inclined sides D2 and D' and upset the edge of an annular ring
into a shaped edge, symmetrical with the body of the ring, substantially as
described.
In witness whereof, I, the said Merrick David Marcy, have hereunto set my
hand this 12th day of February & D 1801
In presence of:
ALBERT A. BARKER,
FRANK M. MARCY.
MERRICK DAVID MARCY.