A New or Improved Method of Manufacturing Ring-shaped Bodies from Solid Metal Blocks.
Year: 1894

page_text: GUMI DEI DI ECIFICATION.
A New or Improved Method of Manufacturing Ring-shaped Bodies
from Solid Metal Blocks.
We, OSCAR FRIEDRICH and WILHELM SCHULTE, both of Duisburger Eisen and
Stahlwerke, Duisburg, Rhine Province, Prussia, in the Empire of Germany, Iron
and Steel Workers, 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:-
**!!
This invention has for its object a new or improved method of manufacturing
ring-shaped bodies from solid metal blocks, and consists in pressing a heated metal
block, by means of hydraulic presses or under the steam haimmer, against and over
a puncheon in such a manner that this latter penetrates the block to a certain
depth (about to the full cross section of the conical top of the puncheon). The
block being pressed so far over the puncheon, the press stamp or the hammer ram
is drawn back and moved upwards, and upon the partly pierced block a second
heated block is placed in the guide frame and, by a repeated pressure or blow, the
first block is completely passed over the puncheon, the second block taking the
position of the first. The fully perforated block is taken away from the puncheon,
the second block is forced over the puncheon by a third one, and so on.
In the accompanying drawings the different operations are represented in
Figures 1, 2, 3.
In Fig. 1 the heated metal block E is placed in the upper correspondingly
shaped part of the guide frame A and is forced, by means of the press stamp B₁ of
the upper press ram or press piston B, over the puncheon D mounted in and
connected with the under press table C up to about the largest diameter of the said
puncheon D. Then the press piston. B with the stamp B' is withdrawn into the
position shown in the drawing by dotted lines, a second heated metal block is placed
in the guide frame and, by a pressure or blow of the press piston B and by means
of the press stamp B' and the second block, the first one is fully forced over the
puncheon D, as represented at Fig. 2.
In Fig. 3, the metal block having been fully perforated, the press_table_C
descends so far that the perforated metal block E and the puncheon D can be
drawn out, after which the latter can be replaced by another one. This done, the
press table with the puncheon is raised as far as the hole in the next block E will
allow, said block in the meantime being held in the guide frame. A new heated
metal block is then placed in the guide frame upon the aforesaid block and the
action is repeated.
In this manner ring-shaped bodies of every kind may be manufactured by
punching solid metal blocks of any desired profile, provided that the upper part of
the guide frame is made of shape corresponding to the profile of the metal block
which is to be punched, whilst the lower part of the guide frame is sufficiently
enlarged to allow a free expansion to the metal block as it is being expanded by
the penetrating puncheon.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:-
A new or improved method of manufacturing ring-shaped hollow bodies consisting
of pressing a metal block of any desired profile in a heated state, by means of a
piston B and a ram or stamp B', through a guide frame A against a puncheon D
placed in and connected with a second piston or press table C, and forcing it

page_text: completely over the said puncheon by placing thereon a second metal block, and
so on, the upper part of the guide frame A being of like shape to and fitting tightly
the metal block, whilst the under part of the guide frame is sufficiently enlarged to
allow a free expansion of the metal block as it is being expanded by the penetrating
puncheon, substantially as herein shown and described.
Dated this 12th day of February 1894.
OSCAR FRIEDRICH,
WILHELM SCHULTE,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.