Improv Rubber or Analogous Gum.
Year: 1887

page_text: Improv
Rubber or Analogous Gum.
We JOSEF BOSCH and WILHELM KUMPFMILLER both of Brunnstrasse 9, Munich
in the Kingdom of Bavaria Manufacturers 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 vulcanized objects and especially to such objects as are
composed of sheet metal or other material in thin sheets required to be vulcanized.
The purpose of this invention is to provide sheets, plates, jars and other receptacles
and objects having the rigidity conferred by metal with the resistance to acids or
other influences derived from vulcanizing, the said vulcanized surface being
firmly secured over all parts of the metal.
The improvements consist in forming said sheets, plates jars or other receptacles or
objects of or from perforated sheet metal wire gauze or of other rigid material having
passages or perforations through the same-applying the rubber to be vulcanized or
vulcanized or partly vulcanized rubber in the form of sheets on each side of the sheets
or plates or of the sheets or plates forming the jars or other receptacles or objects
subjecting the same to pressure and vulcanizing the rubber on the sheets or the like.
The rubber is thereby connected over all parts of the sheets or plates through the
perforations thereof, and the two layers of rubber are connected together at such
places as one block whereby the adhesion of the rubber is rendered exceedingly
durable and secure.
In performing this invention we preferably follow the process hereinafter described;
with reference to the accompanying drawings in which Fig. 1 is a vertical section of
a receptacle showing on the right the perforated metal and on the left, the same with
vulcanized covering. Fig. 2 is a horizontal section thereof. Fig. 3 is a part of a
curved plate showing a modification. Fig. 4 is a horizontal section of a vessel
showing another modification.
The vessel or receptacle or other object is made in the required form of the
perforated sheet metal or wire gauze on like perforated rigid material and is treated
with chloroform and covered, each sheet thereof, on each side with plates or sheets of

page_text: rubber prepared as for vulcanizing in the usual manner. The two sheets are then
pressed firmly together between molds fitting to the object or between rollers or plates
according to the nature of the objects constructed and are vulcanized under
pressure.
By this process it is possible to produce vessels such as are heretofore unknown, of
great resisting capacity against breakage or cracking as also against acid and other
corroding influences, the rubber layers being so firmly attached as to be practically
inseparable from the metal.
We do not confine ourselves to using rubber on each or either side of the perforated
sheet metal or the like, thus on the one side we may use gumelastic c and on the other
hard rubber a; or rubber capable of being vulcanized to different degrees of hardness
on each side or in different parts of the vessel or other object.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed we declare that what we claim is
1. The process for producing plates, sheets, vessels and objects substantially as
described consisting in coating perforated metal or other plates or gauzes or objects
composed thereof, on each side with rubber or like material, the same or different
for each side or for different parts of said plates or objects, prepared for vulcanizing,
and thereafter vulcanizing the same under pressure as set forth.
2. As a new article of manufacture, plates or sheets, vessels or other objects
composed of perforated sheet metal, wire gauze or like perforated material with
vulcanized layer on each side substantially as set forth.
Doted this 10th day of Docomhar 1887
Doted this 10th day of Docomhar 1887
JOSEF. BOSCH.
WILHELM KUMPFMILLER.
By Herbert & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agents to Applicant.