IMPROVEMENTS IN METAL PAOKING RINGS AND IN THE A com- METHOD OF AND APPARATUS FOR MANUFACTURING THE SAME
Year: 1878

page_text: LETTERS PATENT to Frank Wirth, of the Firm of Wirth and Company, Patent
Solicitors, at Frankfort-on-the-Main, in the Empire of Germany, for the
Invention of "IMPROVEMENTS IN METAL PAOKING RINGS AND IN THE
A com-
METHOD OF AND APPARATUS FOR MANUFACTURING THE SAME."
munication from Theodor Remus, of Lodz, in the Empire of Russia.
Sealed the 4th October 1878, and dated the 8th April 1878.
PROVISIONAL SPECIFICATION left by the said Frank Wirth at the Office
of the Commissioners of Patents on the 8th April 1878.
FRANK WIRTH, of the Firm of Wirth and Company, Patent Solicitors, at
"IMPROVEMENTS IN METAL
Frankfort-on-the-Main, in the Empire of Germany.
PACKING RINGS AND IN THE METHOD OF AND APPARATUS FOR MANUFACTURING
THE SAME." [A communication from Theodor Remus, of Lodz, in the Empire of
Russia.]
This Invention relates to improvements in metal packing rings, and in the method
of and apparatus for manufacturing the same.
Rings manufactured according to my said Invention have no joint of any kind,
and may be constructed of any suitable material, also of any size and shape.
The method of manufacturing the same is as follows, that is to say :-One or
more sheets of metal are placed under a sort of punch, which being pressed down-
ward causes the metal to wrap up around the sides of the former; this is
then placed in a lathe or any other suitable machine, and rings are cut off
the same by means of sharp-edged wheels being pressed against the material as it
revolves.
It will be understood that by giving the edges of the cutters a proper shape any
desired section can be given to the ring.

page_text: After the rings have been thus manufactured they may be passed through another
apparatus to give them any further desired form. This is effected by a sort of
rolling apparatus with moveable rollers or pressing wheels.
I also manufacture by means of this Invention fluted rings; one advantage of
these rings is that they can be made larger or smaller within a certain limit.
Rings manufactured out of two sheets of metal open when pressed.
The operation is as follows, that is to say:-Copper or other metal to form the
ring is first cut into round plates or sheets, the size of which will be regulated
according to the size of the rings that are intended to be made from the same;
these sheets are then placed under a press, provided with a round-nosed punch,
which, being forced down upon the metal, causes the same to wrap up round the
punch. It will be seen that by this operation a metal cup or cylinder with one end
closed is formed. Then the punch head having one end thereof covered with tho
metal which has become wrapped around it, as above described, which metal is to
be cut into rings, is fixed by its other end into a lathe head or other suitable
revolving machine, which being set in motion a round cutter (or preferably four
cutters, placed two on either side) is pressed against the metal, thus cutting off a
ring. It will be seen that according to the section given to the cutters will be the
shape of the ring. Also, that if a cutter is made with two or more cutting edges a
corresponding number of rings will be cut off. Two or more sheets of metal may be
pressed upon the punch, and in this manner several rings cut off at once, the
same fitting inside each other.
In manufacturing fluted or corrugated rings according to this Invention, I take
the plain rings produced as above described, and pass the same through two rollers
or wheels provided with the desired indentations."

page_text: FRANK WIRTH, of the Firm of Wirth and Company, Patent Solicitors, at
Frankfort-on-the-Maine, in the Empire of Germany. "IMPROVEMENTS IN METAL
PACKING RINGS AND IN THE METHOD OF AND APPARATUS FOR MANUFACTURING
THE SAME." A communication from Theodor Remus, of Lodz, in the Empire of
Russia.
My Invention relates to improved metal packing rings and the method of producing
such packing rings, as herein-after set forth.
In the accompanying Drawing,
Figure 1 is a plan, illustrating the manner of cutting my improved packing rings
from a metal tube or pipe.
Figure 2 is a plan, illustrating one manner of shaping the said rings.
Figure 3 is an elevation, illustrating the manner of forming wavy or fluted
rings.
Figure 4 is a sectional view, illustrating the formation of rings with double
thicknesses of metal.
Figure 5 is a similar view, illustrating the method of making the same
hollow.
Figures 6 and 7 illustrate the manufacture of large rings.
Figures 8 and 9 are front and side views, illustrating a modified manner of
making hollow rings according to this Invention.
The method of manufacturing the said rings is as follows, that is to say :-A sheet
of copper or other suitable metal is pressed either on a lathe under a press, or by any
other well-known means, into short tubes or pipes, as shewn at A, Figure 1. These
tubes are placed on a revolving mandrel or pin B, and cut into rings by circular
cutters C pressed against the same. Any convenient number of these cutters may bo
placed side by side, such cutters being of different sizes, so that the first cuts but lightly
into the metal, the second somewhat more deeply, and so on, and the last cutter of
the series cuts off the ring. The said cutters may also be so arranged that two
make the first cut, and two cut off the rings. As soon as the said rings have been
cut off, either the tube is moved so that a fresh piece comes before the cutters, or
the frame carrying the cutters is moved along to effect the required adjust-
ment.
Figure 2 represents a pair of rollers carrying shaping rolls a, b, made of hardened
steel, between which rollers the said rings are rolled to sharpen their edges and
give them any desired form; these rollers are pressed together by screws, levers, or
other suitable mechanism.
In some instances I make these rings wavy, undulated, or fluted, as represented
at e, Figure 3; this is effected by passing them between toothed rolls or
wheels c, d.
I also in some cases make the said rings hollow in the following manner :-In
making the tubes or pipes as described as the first operation, two metal sheets
are worked together, so that a tube or pipe is formed within a pipe, and when
placed on the mandrel as described, two rings, that is to say, one inside the other,
will be cut off at one operation. If one of these rings consisting of two sheets are
inside, the other is placed between rollers, as shewn in Figure 4, and the same are
pressed together; the two metal rings not having room to expand will separate in
the centre, and push themselves into the hollow of the rollers, thus producing a
hollow ring as represented in transverse section in Figure 5.
Very large rings can be manufactured according to this Invention advantageously
from sheet metal by cutting the same into flat rings, as shewn in Figure 6, by
means of circular shears; these flat rings are then rolled to give them the form
represented in Figure 7.

page_text: My improved rings can also be made hollow by rolling the two halves separately
in the manner illustrated in Figure 8, and then placing them together as represented
in Figure 9.
Having thus fully described the said Invention and the manner of performing the
same, I wish it understood that I claim,―
First. A metal packing ring without a scam, or only having a scam around its
periphery, and with its periphery either plain or wavy, as above set forth.
Second. A metal packing ring composed of two or more parts, and hollow, or
with an annular space extending around inside its periphery, as and for the
purpose set forth.
In witness whereof, I, the said Frank Wirth, have hereunto set my hand
and seal, this Third day of October, in the year of our Lord One thousand
eight hundred and seventy-eight.
FRANK WIRTH. (L.S.)