Year: 1887

page_text: Date of Application, 13th Dec., 1887
Complete Specification Left, 12th Sept., 1888
Complete Specification Accepted, 2nd Nov., 1888
VS
I, GEORGE FREDERICK SHEATH of the firm of Sheath Brothers of 89 City Road
in the County of Middlesex, India Rubber Manufacturer, do hereby declare the nature
of this invention to be as follows:
My invention relates to the production of flexible braided tubing suitable to be
employed for speaking tube terminals, telephone instruments, conversation and hearing
tubes, connections or conduits to gas stoves and lamps and for other uses.
For this purpose I employ a helically coiled wire core as usual but instead of
enveloping such core in a tube or covering of vulcanized india rubber or rubber
compound I, according to my invention, cover such core with india rubber proof
cloth or india rubber insertion sheet according to the use to which the tubing is
to be put.
This cloth I preferably cut diagonally in order to give greater flexibility to the
tubing and I coil, wrap or lay it around the core carefully joining its meeting edgos
by means of india rubber solution or cement and I then braid an outer protecting
covering thereto.
By these means I obtain a flexible tubing which is perfectly impervious to air, gas
and other fluids, which is not so liable to decay and which is less expensive to produce
and more durable, and therefore more suitable for hot climates than tubing formed of
vulcanized india rubber or india rubber compound.
GEORGE FREDERICK SHEATH.
By Harris & Mills,
23, Southampton Buildings,
Agents.

page_text: I, GEORGE FREDERICK SHEATH of the firm of Sheath Brothers of 89 City Road,
in the County of Middlesex, India Rubber 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, reference being had to
the accompanying drawing, and to the letters marked thereon:-
My invention relates to the production of flexible braided tubing, suitable to be
employed for speaking tube terminals, telephone instruments, conversation and hearing
tubes, connections or conduits to gas stoves and lamps, and for other uses.
For this purpose I employ a helically coiled wire core a as usual, but instead of
enveloping such core a in a tube of india rubber or rubber compound, I, according
to my invention, cover such core a with india rubber proof cloth b, that is to say,
with cloth proofed on one side with india rubber, or with india rubber insertion
sheet, that is to say, a sheet of cloth with india rubber on both sides, according to
the use to which the tube is to be applied.
This india rubber proof cloth or india rubber insertion sheet I preferably cut
diagonally, that is to say, on the "cross" in order to give greater flexibility to the
tubing, and I coil, wrap, or lay it around the core a, carefully joining its meeting
edges by means of india rubber solution or cement, and 1 then braid an outer
protecting covering c thereon.
By these means I obtain a flexible tubing which is perfectly impervious to air,
gas and other fluids, which is not so liable to decay, and which is less expensive to
produce and more durable, and therefore more suitable for hot climates, than tubing
formed as heretofore, of helically coiled wire covered with vulcanized india rubber or
india rubber compound.
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 :-
The improved manufacture of flexible tubing by enveloping a helical wire core with
india rubber proof cloth, or with india rubber insertion sheet, and covering the same
with a braided covering, substantially as herein shown and described.
Dotal this 19th day of Santamba„ 1000
GEO. FRED. SHEATH.
By Harris & Mills,
23, Southampton Buildings,
Agents.