AN IMPROVED PACKING OR JOINTING MATERIAL FOR STEAM AND OTHER JOINTS
Year: 1884

page_text: '
I BENJAMIN RHODES of 240 Bow Road, London, E in the County of Middlesex,
Engineer and Brassfounder, do hereby declare the nature of my Invention for
AN IMPROVED PACKING OR JOINTING MATERIAL FOR STEAM AND OTHER JOINTS,
to be as follows:-
3
My invention relates to the mode of uniting or combining together certain sub-
stances in the production of a packing or jointing material to be used in making
steam and other joints which are subjected to the action of high pressure and also
great heat, as in the cases of steam boilers and pipes; steam coils and the like.
In carrying out my invention, I take thin sheets of asbestos paper or millboard
and perforate said sheets over the entire surface thereof with holes of any desired
shape or size. I then thoroughly saturate said sheets with an adhesive solution
made by dissolving caoutchouc or other gums, or with a suitablo-adhesive "sizing."
I take one of the aforesaid perforated and prepared sheets and place it between two
thin sheets of "rubber" or of rubber compound (which latter may be the "asbestos
rubber compound" described in the specification of my invention Number 1334 of
the year 1879) and pass the whole between heated rollers under pressure, in order
to ensure the thorough uniting and combining together of said sheets, which is
effectually accomplished by the material or materials composing the two outer
sheets being pressed through the perforations in the intervening asbestos paper or
millboard sheet prepared as aforesaid; and, so "keying" riveting, or securely
holding and combining the three sheets together. The said combined sheets may
then be subjected to the ordinary vulcanising process. Or, in making washers of
the improved packing according to my present invention, these may be stamped,
punched, or cut out from the said sheets before vulcanisation and the internal
pieces re-rolled, to prevent waste.
Any number of sheets of the respective materials hereinbefore described united
together in manner aforesaid, may be employed, to form packing of various
thicknesses.

page_text: COMPLETE SPECIFICATION,
I, BENJAMIN RHODES of 240 Bow Road, London, E. in the County of Middlesex
Engineer and Brassfounder do hereby declare the nature of my invention for
"AN IMPROVED PACKING OR JOINTING MATERIAL FOR STEAM AND OTHER JOINTS,"
and in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My Invention relates to the mode of uniting or combining together certain sub-
stances to be employed for the production of a jointing material-to-be-used-in-
making steam and other joints which are subjected to the action of high pressures
and also of great heat.
In carrying out my Invention I take thin sheets of asbestos paper or millboard
and perforate or indent said sheets over the entire surface thereof with holes of
any desired shape and size. I then-thoroughly-saturate said sheets. with.an.adhesive
solution made by dissolving caoutchouc or with a suitable-adhesive sizing. I take
one of the aforesaid perforated-and-prepared-sheets-and-place-it-between-two-thin
sheets of "Rubber" or "Rubber Compound" (which latter may be the "Asbestos
Rubber Compound" described in the Specification of my Invention-No-13347)-and-
pass the whole between heated rollers under pressure in order to ensure the
thorough uniting and combining together of said sheets, which object is effectually
accomplished by the material forming the outer sheets being pressed through the
perforations or indentations in the intervening asbestos paper or millboard sheet
prepared as aforesaid and so "keying," riveting or securely holding and combining
together the inner and outer sheets. The said combined sheets- may then be sub-
jected to the ordinary vulcanising process. Or, in like manner a sheet of
"Rubber" or "Rubber Compound" may be placed between two perforated sheets
of asbestos.
In making washers of the improved packing according to my present Invention,
these may be stamped, punched or cut out from the said sheets (formed as herein.
before described).before vulcanisation; and the internal piece is re-rolled, to prevent
waste.
Any number of sheets of the respective materials hereinbefore described, united
together in the manner aforesaid, may be employed to form packing of various
thicknesses.
In some cases I may use (with a view to impart additional strength) in combi
nation with the paper or millboard sheets herein before referred to, a knitted or
woven fabric or material of open mesh, made of finely spun asbestos yarn (or of
asbestos and cotton finely spun) which I saturate and prepare in a similar manner
to that which I have herein described in reference to asbestos paper or millboard;
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I wish it to be under-
stood that I make no claim for the mere process or operation of superposing one or

page_text: more sheets of the materials hereinbefore referred to upon each other and I declare
that what I claim is
Firstly-The use of perforated sheets of asbestos paper or millboard, in combi-
nation with "Rubber" or "Rubber Compound" generally and substantially as
herein set forth.
Secondly: The preparation and saturation of the asbestos sheets as herein
described so as to ensure a perfect union and combination or "Keying" of the
materials used in carrying out my Invention.