A Process for the Production of Capsules, Cases, and the like, and Apparatus therefor.
Year: 1899

page_text: Date of Application, 29th July, 1899
Complete Specification Left, 24th Apr., 1900-Accepted, 30th June, 1900
A Process for the Production of Capsules, Cases, and the like, and
Apparatus therefor.
I, SALOMON FRANK, of 4, Blücherplatz, Frankfort-on-the-Main, in the Empire
of Germany, Engineer, do hereby declare the nature of this invention to be as
follows:
This invention relates to the production of capsules, cases, or other articles that
can be stamped from copper, aluminium, zinc and other tempered or hardened
metal.
According to my invention I place in a mould of steel, or other suitable metal,
a piece of the metal from which the capsule, or case, or the like, is to be made.
Into this mould a pressure piston then is caused to descend, which is formed of
such a size with relation to the mould as to be distant from all sides thereof an
amount corresponding to the thickness of the capsule, case, or the like to be
formed.
The descending stamp or piston exerts such a pressure upon the metal placed
in the mould, that the said metal is caused to ascend in the space between the
mould and the piston, thus forming the capsule, case, or the like.
In this manner cylindrical, conical, and angular capsules, cases, or the like,
can be formed, or other articles (such as boxes or the like) of any desired shape
in cross section or longitudinal section.
In one form of apparatus according to my invention for producing cylindrical
sockets, or cases, or the like, the mould is provided with a false bottom, on which
the metal is placed to be formed into a socket, or case, or the like, by the descent
of the stamp or piston formed with reference to the mould in the manner afore-
said.
The article so formed can be then knocked out of the mould by means of
the false bottom.
In another arrangement according to my invention sockets, capsules or cases,
or the like, as for instance cartridge cases, can be formed with their bottoms
provided with an annular flange.
The mould in this case consists of an annular piece open at the top and
bottom, the bore of which is wider in the lower portion than in the upper.
Into
the wider portion of the mould a false bottom is inserted but so as not to extend
up to the shoulder of the wider part. If the metal piece in the mould be now
compressed by the stamp or piston in the manner already described, a socket or
case with a flanged base will be formed. The false bottom. is then removed and
the case so formed is knocked out of the mould from above.
In the case of capsules, sockets, cases, or the like, the walls of which are vertical
and parallel to each other the walls or sides of the mould need not extend right
up to the height required for the article to be formed, it being sufficient if they
extend but slightly beyond the piece to be stamped or pressed out. The metal
forced out of the mould under the pressure of the stamp or piston ascends along

page_text: extend but slightly beyond the piece to be stamped or pressed out as shewn in
Figures 5 and 6. The metal c forced out of the mould a under the pressure of
the stamp or piston d ascends along the sides of the said stamp or piston without
the need in this case of being guided from outside.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
Producing capsules, cases, boxes, sockets and the like from copper aluminium
or other tempered or hardened metals, the characteristic feature being that the
metal from which the article is to be formed is placed in a mould and submitted
therein to the pressure of a piston so shaped as to leave a space between it and
the interior of the mould corresponding to the thickness required for the
socket case, or the like to be produced substantially as hereinbefore described.
Dated this 24th day of April 1900.
JOHNSONS & WILLCOX,
47, Lincolns Inn Fields, London, W.C., Agents.