Improvements in Apparatus Employed in the Manufacture of Flexible Pipes and Tubes.
Year: 1896

page_text: Date of Application, 8th Dec., 1896
Complete Specification Left, 8th Sept., 1897-Accepted, 30th Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in Apparatus Employed in the Manufacture of
Flexible Pipes and Tubes.
We, RILEY PATCHETT and FRANK PATCHETT, both of Sedbergh Mills, Halifax,
in the County of York, Wire Manufacturers, do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in apparatus or appliances employed
in the manufacture of hose pipes, steam pipes, and other flexible pipes or tubes
which are made of a woven or knitted fabric internally or externally covered
with rubber or other waterproof solution in a soft or plastic condition. The object
is to provide apparatus by which a great length of woven or knitted tubing can
readily be covered with the rubber or other solution in such a manner that the
solution is pressed or forced into the fibres, and practically forms a part thereof.
According to this invention we employ a die and mandril, and in the latter
is formed a circumferential groove in which are placed a series of anti-friction
balls or runners, the outer peripheries of which extend or protrude slightly beyond
the circumference of the mandril. Inside the die are also a series of balls or
runners, and as the woven tube is drawn over the mandril, it passes between the
ball bearings on the mandril and the ball bearings of the die, so that the tube
can be drawn through with facility and without binding or sticking.
Attached to or forming part of the die is a chamber containing a solution of
rubber, or rubber in a plastic condition, and this rubber is by any of the ordinary
machines forced into and on the woven tube, and the latter is drawn through
the die, and the superfluous rubber is removed, and an even coating is left on
the tube.
Adjustable guide and pressure rollers are applied to the die to guide the tube
passing over the mandril. After passing through the die, the covered tube passes
through a heated pipe or chamber, and the solution is hardened or dried.
The pipe is passed through the apparatus and the required thickness of
rubber or other solution is fixed thereon, and when dry is vulcanized or hardened,
and if it is the interior of the pipe which is to be covered, the pipe is turned
inside out.
The solution is put on the pipe in one even layer and at one operation, and a
thoroughly water and air-proof covering is ensured. As the pipe or tube is drawn
forward, the balls are free to revolve or move so that there is no sticking or
binding.
BRIERLEY & HOWARD,
Penny Bank Chambers, Halifax, Agents for the Applicants.

page_text: COMPLETE SPECIFICATION.
"
Improvements in Apparatus Employed in the Manufacture of
Flexible Pipes and Tubes.
We, RILEY PATCHETT and FRANK PATCHETT, both of Sedberg Mills, Halifax,
in the County of York, Wire 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 improvements in apparatus or appliances employed
in the manufacture of hose pipes, steam pipes, and other flexible pipes or tubes
which are made of a woven or knitted fabric internally or externally covered
with rubber or other waterproof solution in a soft or plastic condition. The object
is to provide apparatus by which a great length of woven or knitted tubing can
readily be covered with the rubber or other solution in such a manner that the
solution is pressed or forced into the fibres and practically formis a part' thereof.
Such being the nature and object of our said invention, the following is a
complete description of same, reference being had to the accompanying drawings,
in which
Fig. 1 is a sectional side elevation of the head of the improved apparatus, such
head being fitted onto any ordinary rubber feed apparatus.
Figs. 2 and 3 are details of modified forms of mandrils.
According to this invention we employ a mandril 1 on which is a boss or enlarged
part 2 formed either on the mandril 1 itself (see Fig. 3) or in a separate part
(see Fig. 1) or in two parts (see Fig. 2); in either of the latter forms the part
or parts is or are mounted on a pin 3 which connects the two parts of the mandril 1
together and also forms an axis for the sphere or parts forming the boss 2. A
circumferential groove 4 is formed in the boss or enlarged part 2 (see Figs. 2 and 3)
and in this groove 4 are placed a series of anti-friction balls or runners 5-5 the
outer peripheries of which extend or protrude slightly beyond the circumference
of the enlarged part 2 of the mandril 1. The boss or sphère 2 instead of having
the ball bearings or runners 5, 5, around its greatest circumference may itself
be mounted on ball bearings or runners 5, 5, (see Fig. 1) in which case the balls
or runners 5, 5 are carried in grooves 4 formed by and between the ends of the
parts of the mandril 1 and the boss or sphere 2, the balls 5 resting on the pin 3.
By any of the above described arrangements it will be seen that the boss or
enlarged part 2 will offer no resistance to a flexible tube when the latter is
drawn over it.
The mandril 1 is passed through a die 6 formed by two circular grooved
plates 7, 8 being screwed or bolted together, and in the groove 9 between such
plates are a series of anti-friction balls or runners 10, 10, so that a circular
anti-friction die is formed thereby. The mandril 1 is passed through such die 6
until the boss or enlarged part is almost in contact therewith, as shewn in Fig. 1.
The mandril 1 is also passed between the guide blocks or supports 11, 12, and
through a plain circular die 13. The mandril 1, anti-friction die 6, guide blocks 11, 12,
and die 13 are all interchangeable so that woven or knitted tubes or pipes of
various diameters can be covered with rubber in the manner hereinafter described
The woven tube or pipe to be covered with solution is drawn over the mandril 1
and between the enlarged part or boss 2 on the mandril 1 and the ball bearings
of the die 6. so that the tube can be drawn through with facility and without
binding or sticking as it is drawn between two or more sets of anti-friction or
ball bearings.
Attached to or forming part of the die 13 is a chamber 14 communicating by

page_text: holes 15 with the feed pipe 16 by which a solution of rubber or rubber in a
plastic condition is by any of the ordinary machines forced into and through the
chamber 14 and into and on the woven tube, and the latter is drawn through the
die 13 and the superfluous rubber or solution is removed, and an even coating
is left on the tube.
Adjustable guide and pressure rollers 17 are applied to the mandril 1 to
guide the tube passing over the same. After passing through the die 13 the
covered tube may be passed through a heated pipe or chamber and the solution
is hardened or dried.
The tube or pipe is passed through the apparatus and the required thickness of
rubber or other solution is fixed thereon, and when dry is vulcanized or hardened,
and if it is the interior of the pipe which is to be covered, the pipe is turned
inside out.
The solution is put on the pipe or tube in one even layer and at one operation,
and a thoroughly water and air-proof covering is ensured. As the pipe or tube
is drawn forward the balls 5, 5 and 10, 10 are free to revolve or move so that there
is no sticking or binding.
At 16 is a steam space by which the feed head can be maintained at the required
temperature, and at 17 is a pipe or valve by which access to the solution
chamber 14 or pipe 16 is available for any purpose.
The several balls or runners 5, 5, 10, 10 may be mounted on a circular axis or
ring if desired, such ring passing through the centres of the balls or runners
which have holes drilled through them.
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 general construction, arrangement, and combination of parts con-
stituting the improved apparatus as and for the purpose herein described and
substantially as illustrated by Fig. 1 of the annexed drawings.
(2) In apparatus for covering woven or knitted pipes or tubes with a plastic
substance, the use of a mandril with a boss or enlarged part formed by, or
mounted on, ball or anti-friction runners in combination with a die formed by a
series of anti-friction balls or runners substantially as herein described and illus-
trated by Fig. 1 of the annexed drawings.
(3) A mandril 1 having a boss or enlarged part 2 mounted on ball bearings
or anti-friction runners, or having balls or anti-friction runners arranged around
its greatest circumference, as and for the purpose herein described and substantially
as illustrated by Figs. 1, 2, and 3 of the drawings annexed.
Dated this 741. day of Canton 1007
RILEY PATOHETT,
FRANK PATCHETT.
By their Agents, Brierley & Howard,
Penny Bank Chambers, Halifax.