Improvements relating to the Production of Brass Fittings by Stamping.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements relating to the Production of Brass Fittings by
Stamping.
I, PAUL ROCKENSTEIN, of 41, Kommandantenstrasse, Berlin, S.W., in the
Empire of Germany, Merchant, do hereby declare the nature of this invention
to be as follows:-
This invention relates to the manufacture of brass fittings and has for its
object to produce such fittings economically by stamping so that the resulting
product shall be ready for application to the part to which it is intended to be
fitted without any necessity for machining finishing off or polishing.
Hitherto brass fittings such as valve bodies, valve covers, tooth wheels, and
other parts and fittings have been produced from cast metal which were necessary
to machine polish and finish off before application to the part to which they
were intended to be fitted.
The object of this invention is to avoid the disadvantages attendant upon
the production of such fittings by casting in the usual way.
The invention
consists in stamping the valve body, valve cover, wheel or other part or fitting
from sheet brass of a composition in which the zinc predominates, for example
of a composition of from 50 per cent. to 60 per cent. by weight of copper to
50 to 40 per cent. by weight of zinc with the addition of other metals such as
tin, aluminimum. By providing a high percentage of zinc in the brass alloy
the metal is better stamped as the zine is possessed of the quality of plasticity
at certain high temperatures lower than melting point especially when alloyed
with other metals.
In the production of parts or fittings according to the invention the metal
blank is heated to a moderate degree in order to render the metal slightly plastic
and suitable for forging or pressing. The strip of metal or part previously
warmed is then stamped within a press in which the dies are provided to corre-
spond and to give the form desired to the particular fitting or part to be made.
Parts or fittings so produced have a smooth surface and do not require machining
polishing or finishing and are ready for use having the holes, apertures, teeth,
projections and other formations of the parts of the fitting formed in the press
by one or a series of operations as herein before described.
No limitation is placed to the kind of press or presses for the production of
the fittings nor to any manner of stamping or pressing in such machine.
Dated this 1st day of October 1898.
MARKS & CLERK,
18, Southampton Buildings, London, W.O., and
13, Temple Street, Birmingham, Agents.

page_text: COMPLETE SPECIFICATION.
Improvements relating to the Production of Brass Fittings by
Stamping.
I, PAUL ROCKENSTEIN, of 41, Kommandantenstrasse, Berlin, S.W., in the
Empire of Germany, Merchant, 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 relates to the manufacture of brass fittings and has for its
object to produce such fittings economically by stamping so that the resulting
product shall be ready for application to the part to which it is intended to be
fitted without any necessity for machining finishing off or polishing.
Hitherto brass fittings such as valve bodies, valve covers, tooth wheels, and
other parts and fittings have been produced from cast metal which were necessary
to machine polish and finish off before application to the part to which they
were intended to be fitted.
The object of this invention is to avoid the disadvantages attendant upon
the production of such fittings by casting in the usual way. The invention
consists in stamping the valve body, valve cover, wheel or other part or fitting
from sheet brass of a composition in which the zine predominates, for example
of a composition of from 50 per cent. to 60 per cent. by weight of copper to
50 to 40 per cent. by weight of zinc with the addition of other metals such as
tin, aluminium in such small proportions as will produce the desired degree of
hardness to suit the purpose to which the alloy is to be applied. By providing
a high percentage of zinc in the brass alloy the metal is better stamped as the
zinc is possessed of the quality of plasticity at certain high temperatures lower
than melting point expecially when alloyed with other metals.
In the production of parts or fittings according to the invention the metal
blank is heated to a moderate red heat in order to render the metal slightly plastic
and suitable for forging or pressing. The strip of metal or part previously
warmed is then stamped within a press in which the dies are provided to corre-
spond and to give the form desired to the particular fitting or part to be made
Parts or fittings so produced have a smooth surface and do not require machining
polishing or finishing and are ready for use having the holes, apertures, teeth,
projections and other formations of the parts of the fitting formed in the press
by one or a series of operations as hereinbefore described.
No limitation is placed to the kind of press or presses for the production of
the fittings nor to any manner of stamping or pressing in such machine.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
1 claim is:-
The manufacture of brass fittings from sheet brass having a relatively high
percentage of zinc, the alloy being heated and forged stamped or pressed to
form the particular fittings required, in the manner for the purpose and sub-
stantially as herein before described.
MARKS & CLERK,.
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and 25, Cross Street, Manchester,
Agents.