Improved Means and Appliances for Manufacturing Glass Tubing, and for Coupling Together such Tubing.
Year: 1890

page_text: Date of Application, 4th July, 1890
Complete Specification Left, 4th Apr., 1891-Accepted, 9th May, 1891
PROVISIONAL SPECIFICATION.
Improved Means and Appliances for Manufacturing Glass Tubing, and
for Coupling Together such Tubing.
I, DAN RYLANDS of Hope Glass Works, Stairfoot, near Barnsley in the County
of York, Glass Bottle Manufacturer do hereby declare the nature of this invention
to be as follows:-
My present invention has for its object the manufacturing or forming of glass
tubes in such a way that they can with their couplings be used alone or with but a
slight covering of wood or cement or other material.
My invention also applies to improved means of coupling such pipes so as to
hold them securely together_and_make perfectly safe and water tight joints. In
carrying out my invention I run or pour molten glass into a mould of the size
internally what the pipe is required to be externally and this mould opens at the
sides and can be securely closed by catches lockpins or other suitable arrangement.
At one end of this mould I form an annular recess which will produce on the
molten glass poured into such mould a flange. On the other end of the said mould
I form a projection having a female screw thread or inclined indentations which
produce on the molten glass poured in a male screw on raised inclines. After the
molten glass has been poured into this tube mould the tube is produced by first
pressing and then blowing. The mould having an inner piston working therein
which recedes as the plunger forming the inner diameter of tube is pressed down
until the said plunger has gone as low as practicable when by the pressure of
blowing the tube blown hollow for the remainder of its length. Where there is
any difficulty in forming either the screw projection or the raised inclines a small
quantity of hot molten glass may be added so as to ensure these being perfectly
formed. To joint these tubes together I take a union made of iron or other suitable
metal or material and having a female screw formed thereon and after cutting or
splitting such union in half I pass it over the flanged end of tube and then by a
suitable band made of wire or other suitable material I clamp or screw the two
halves of union together and thus the union is fastened so that it can be screwed on
the screwed end of another glass tube thus drawing the faces of the flange of the
one glass tube tightly against the face of the screwed portion of the next glass tube
and by means of a suitable packing between the two faces an airtight joint is
secured. In some cases I form a left-hand screw on the one tube and a right hand
screw on the other tube and by means of a suitably formed union which has corre-
sponding screws formed thereon the two pipes are securely coupled having suitable
packing between them.
In some cases I form a lead union or an union made of metal best adapted as a
non-conductor of electricity, or I form an union having glass for its outside and a
lining of lead or other suitable metal or material. Or I form the glass tube having
threaded ends similar to ordinary iron gas or steam tube and with a coupling either
of iron or of lead or tin-lined glass, or lead lined glass. Where it is desired to
cover the glass tubing with cement or other similar substance I form corrugations
on such glass tube for the better holding of the cement.
1000

page_text: COMPLETE SPECIFICATION.
Improved Means and Appliances for Manufacturing Glass Tubing, and
for Coupling Together such Tubing.
I, DAN RYLANDS of Hope Glass Works, Stairfoot, near Barnsley in the County
of York, Glass Bottle Manufacturer, do hereby declare the nature of this inven-
tion and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :-
This invention has for its object the manufacturing or forming glass tubes in
such a manner that they can with their couplings be used alone or with but a
slight covering of wood, cement or other suitable protecting material. Also to
improved means of coupling such tubes, so as to hold them securely together and
make perfectly safe and water tight joints. In order that the nature of this inven-
tion may be clearly understood reference is. had to the accompanying drawings in
which
Fig. 1 is a side elevation and Figs. 2, 3, 4 and 5 are sectional elevations of
tube mould, Figs. 6, 7. 8 and 9 being views showing different methods of coupling
up tubes. In Fig. 1. a, is the tube mould, made in two parts and hinged together
in the usual manner. b. b. b are latches or locks securely holding the two halves of
the mould together. c the pressing plunger, and d the pressing plunger guide.
e a movable mould bottom and a guide for same, g an air admitting mould cover
urnished with jointing ring h of asbestos or other suitable material and capable of
making joint with upper surface of mould a. The method of forming a tube by
the above described apparatus is as follows-The movable mould bottom e being in
the position shown by Fig. 2 and molten metal being charged into the upper portion
of mould as shown; the pressing plunger now descending will cause the molten
metal to ascend in the mould and enter and fill the space between the outer diameter
of plunger and inner diameter of mould thus completing the formation of the upper
portion of tube which may have male or female screw threads-portions of screw
threads, inclines or indentations formed on its upper inner or outer surface; the
plunger continuing its descent will cause the metal and the movable mould bottom e
also to descend till they occupy the position shown by Fig. 3 when the parason
tube will be completed. The movable mould bottom being now removed and the
air admitting cover placed and held in position on upper surface of mould, air
under suitable pressure is admitted causing the metal to still further descend and
complete the formation of the tube as shown by Fig. 4; the mould a being now
opened, the tube can be taken out and the overplugs of metal removed when the
completed tube is ready for the annealing oven. The plunger c and movable mould
bottom e are operated by any suitable means, preferably by hydraulic cylinders,
care being taken that the movable mould bottom will retreat before the advancing
plunger without putting undue strain on the molten metal. Fig. 5 shows a mould
for the formation of tubes having at one end an external screw-thread the opposite
end carrying an internal thread: i is a threaded cylinder bored internally to the
outer diameter of the pressing plunger and capable of being screwed into the upper
portion of mould where it forms a core for the formation of the internal thread.
On the tube being formed as previously described the threaded cylinder can by the
handles j. j be unscrewed from the mould-when the mould can be opened and the
tube removed in the usual manner. Fig. 6 shows a method of coupling tubes
having external screw threads and annular flanges at their opposite ends. kk. being
a coupling of metal or other suitable material made in. two halves and 1 a jointing
ring. The ends of the pipes being brought together and the divided coupling being
placed in position over them, a serving of wire m is passed over and around the
coupling, securely holding the two halves together and enabling the now-united
coupling to be screwed up in the usual manner. In Fig. 7, the tubes are furnished
at their opposing ends with right and left hand threads, the coupling being of glass,
metal or other suitable material. Fig. 8 shows the tubes with right hand threads

page_text: at both ends, or in some cases the threads may be left handed, the coupling being
formed to suit the threads. In Fig. 9, the tubes are threaded at both ends in the
usual manner, the coupling being of glass lined with tin lead or other suitable
material.
It will be seen that instead of screw threads the tubes may be joined together by
portions of screw threads, inclined planes, and that the threads, inclined planes or
other equivalents may be internal as well as external.
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. The improved means or appliances for the manufacture of glass tubes as
shown and described with reference to Figures 1 to 9 in the accompanying
drawings.
2. The improved manufacture and means of coupling together of glass tubes as
shown and described with reference to Figures 5 to 9 of the accompanying
drawings.
DAN RYLANDS.