Improvements in Metallic Canisters for Holding Soft Soap.
Year: 1891

page_text: Date of Application, 23rd July, 1891-Accepted, 29th Aug., 1891
COMPLETE SPECIFICATION,
Improvements in Metallic Canisters for Holding Soft Soap.
I, DAN MASON, trading as the Chiswick Soap Company, of Chiswick in the
County of Middlesex, Soap Manufacturers, do hereby declare the nature of the
said invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
Soft-soap has hitherto usually been put up in canisters made of tin-plate; and
although other materials have sometimes been used there have been serious defects
in them and a canister or box such as is hereinafter described has been for a long
time very much wanted in the trade.
When canisters for this purpose are made of tin plate the soft soap, after a time,
eats away the coating of tin from the plate thereby causing the soap to become a
bad colour and deteriorate, and such canisters have usually been found very soon to
become defective and are otherwise objectionable.
Now according to my invention I make my improved canisters of steel plate the
surface of which has been specially prepared as hereinafter described.
I use steel plate of the kind known as "black plate," of the best quality, of
convenient thickness say preferably about one hundred and twelve sheets 14 inches
by 20 inches, to the cwt., but the guage of the plate will of course depend on the
size of the canisters to be made and other circumstances, and these plates in the
course of their manufacture I pass repeatedly between highly polished rollers much
more than is usual for this class of plate and so as to bring up a bright and
partially polished face of considerable surface hardness.
This is made into cylindrical canisters or boxes the joins, or seams, whereof are
formed with doubled seamed joints such as may be made on a double seaming
machine.
There is considerable difficulty in making the joints as thoroughly sound as is
desirable and I have found that I can get this done in a thoroughly efficient and
satisfactory manner at the South London Tin Works, of 175 Grange Road,
Bermondsey, where machinery specially adapted for this class of work is
employed.
•
The outside of the canisters I prefer to varnish in the usual manner.
In the accompanying sheet of drawings
Fig. 1 represents one of my improved canisters or boxes for soft soap.
Fig. 2, is a section of the same and
Fig. 3 represents enlarged sectional views of the seams drawn to an enlarged
scale.
A is the body of the canister. B is the lid, shown just over but removed from its
seat. C, d and e, are respectively the seams, made without solder, on the side, at
the top and at the bottom of the canister.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :
1. Constructing canisters or boxes, for the containing of soft-soap, of sheet iron
or steel, the surface c" which has been rendered specially hard and qualified to
resist the action of the soft-soap, by being subjected to severe rolling hetween
polished rollers substantially as described.
2. The use, in the manufacture of boxes or canisters for containing soft soap
of chan

page_text: 3. The use, for packing soft-soap, of canisters made of the material, and
substantially as hereinbefore described and set forth.
Dated the 22nd day of July 1891