Improvements in Tubes, and in their Manufacture.
Year: 1895

page_text: Date of Application, 20th Aug., 1895
Complete Specification Left, 28th Mar., 1896-Accepted, 23rd May, 1896
PROVISIONAL SPECIFICATION.
Improvements in Tubes, and in their Manufacture.
I ROBERT ELLIOTT of 118 Manor House Road Jesmond in the City and
County of Newcastle-on-Tyne, Engineer do hereby declare the nature of this
invention to be as follows:-
My invention relates to improvements in tubes and in their manufacture and
has for its object to produce tubes which are strong and can expand and
contract.
According to my invention a part of the tube is corrugated the other part being
plain (by plain I mean of one diameter).
Also a tube can be plain in the middle of its length and be corrugated at one or
both ends.
Preferably I make these corrugations by threading rings of an, or other
suitable section upon a tube and the tube is expanded in such a manner that the
part of the tube immediately surrounded by the ring assumes nearly the same
form as the ring.
Corrugated tubes can be threaded upon tubes of a smaller diameter and the
smaller tube can be expanded so that it takes nearly the same form as the
corrugated tube.
When strength is required more than expansion the section of these rings can
be varied for instance rings of a 1 or a flat section can be threaded upon a tube
and the tube may be expanded into the rings.
Tubes can be threaded upon other tubes and the smaller may be expanded into
the larger.
In some alternative forms of my invention tubes which have been treated in the
manner here-in-before described can have their ends swollen out to a larger
diameter.
Also pieces of suitably shaped tubes may be welded or fastened to the tubes
which I have here-in before described.
Again the ends of these tubes may consist of one corrugation so that the tube
can be fastened to a tube plate at an angle to it.
Tube expanders can be made of a suitable length and their rollers can be made
of a form suitable to the work they have to perform.
These rings or tubes can be held by suitable machinery upon the smaller tube
when it is expanded into them.
Again a tube expander can be made which will hold the rings or tubes upon
the smaller tube while its rollers expand the smaller into the larger tube or
rings.
Dated this Nineteenth day of August 1895.
RODERI ELLIOTT,
Applicant.

page_text: Improvements.in Tubes, and in their Manufacture.
I ROBERT ELLIOTT of 118 Manor House Road, Jesmond in the City and
County of Newcastle-on-Tyne, Engineer 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 :-
My invention relates to improvements in tubes and in their manufacture, and
has for its object to produce tubes which are strong and can expand and
contract.
According to my invention a part of the tube is corrugated the other part being
plain, (by plain I mean of one diameter).
Also a tube can be plain in the middle of its length and corrugated at one or
both ends.
Preferably I make these corrugations by threading rings of a horse-shoe, or
other suitable section upon a tube, and the tube is expanded in such a manner
that the part of the tube immediately surrounded by the ring assumes nearly the
same form as the ring.
Corrugated tubes can be threaded upon tubes of a smaller diameter, and the
smaller tube can be expanded so that it takes nearly the same form as the
corrugated tube.
When strength is required more than expansion the section of these rings can
be varied for instance rings of a 1, or other suitable section can be threaded upon
a tube and they may be expanded into the rings.
Tubes can be threaded upon other tubes, and the smaller, may be expanded
into the larger.
In some alternative forms of my invention tubes which have been treated in
the manner here-in-before described can have their ends swollen out to a larger
diameter.
Also pieces of suitably shaped tubes may be welded or fastened to the tubes
which I have here-in-before described.
Again the ends of these tubes may consist of one corrugation so that the tube
can be fastened to a tube plate at an angle to it.
Tube expanders can be made of a suitable length and their rollers can be made
of a form suitable to the work they have to perform.
These rings or tubes can be held by suitable machinery upon the smaller tube
when it is expanded into them.
Again a tube expander can be made which will hold the rings, or tubes, upon
the smaller tube while its rollers expand the smaller, into the larger tubes, or
rings.
And in order that my said invention may be fully understood I shall now
proceed more particularly to describe the same and for that purpose I shall refer
to the several figures on the annexed sheets of drawings, the same letters of
reference indicating corresponding parts in all the figures.
Figure 1, Sheet 1, shews in longitudinal section a tube strengthened according
to my invention, the three rings a, a', and a², have been threaded upon the tube A,
and the tube has been expanded until the tube is gripped by the rings.
The end B, of the tube A, has been swollen out to a larger diameter.
The end B', has been swollen out so as to form part of a corrugation and enable
the tube A, to be fastened to the tube-plate C, at an angle.
Figure 2, Sheet 1, shews in longitudinal section a tube A, with the expansion
rings b, and b, these rings have been threaded upon the tube A, and a suitable
expander has expanded the tube A until it has assumed nearly the same form
as the rings b, and b'.

page_text: The rollers used to expand this tube into the rings can be globular or of any
suitable form.
The ring a, is a strengthening ring which has been fastened to the tube A, in
the saine manner as the rings a, a', and a have been fastened to the tube A,
Figure 1, Sheet 1, and here-in-before described.
Figures 3, 4, and 5, Sheet 2, shew respectively the plan, elevation, and the end
view, of a machine used to expand the tube into the rings according 'to my
invention.
The machine consists of a frame D, with the two bearings E, and E', through
which the mandrill F, is made to revolve by means of the toothed wheels G and G,
the shaft H, and the bevel wheels I and 1', and the short shaft J, to which the
handle K, is fastened.
To the end of the mandrill F, is fastened the part F¹, in which the rollers for
expanding the tube work.
The rod L, with its tapering end L', works in and through the mandrill F, and
the part F'.
Figure 7, Sheet 2. shews in longitudinal section the mandrill F, and the
part F
Figure 8, Sheet 2, shows the end view of the part F', with the three
rollers M, M', and M', which are pressed outwardly when the tapering part of
the rod L', is moved through the mandrill.
Figures 7, 8, and 9, Sheet 2, are drawn to a larger scale than the rest of the
figures on Sheet 2, the rod L is suitably connected to the lever N, one end of the
lever N, is connected to the frame D, the other end being geared to the rod O;
one end of the rod O, is screwed and is worked to and fro by the wheel P, which
is threaded upon it. The wheel P, is held in its position by the bracket R.
The vice S, a separate view is shewn in Figure 6, Sheet 2, is made to hold the
tube and the ring in such a position that the rollers M, M', and M³, are surrounded
by the ring when the tube is being expanded.
The vice S, is recessed in the jaws to allow the ring to rest in them.
To expand a tube into a ring, a tube with a ring threaded upon it, is pushed
upon the mandrill F, the ring being retained in the vice S, when the ring is at.
the desired distance from the end of the tube the vice 'S, is screwed tight so that
it grips the tube.
The mandrill F, is made to revolve by the handle K.
The wheel P, is turned around drawing the lever N, towards it by means of
the rod O.
The lever N, then pushes the rod L, with its tapering part L', partially through
the mandrill F.
The rollers M, M', and M³, are pressed against the tube by the tapering
part L', and as the rollers revolve with the mandrill F, they gradually expand
the tube into the ring.
The collar T, is fastened to or may be a part of the mandrill F, and keeps the
mandrill from shifting when the machine is worked.
Figure 9, Sheet 2, is a view taken on the line X, Y, of the gear which connects
the rod L, to the lever N. The rod L, is free to revolve.
A second vice of the same pattern as shewn on Sheet 2, and here-in-before
described may be fixed in a line with the mandrill F, so that when the tube is
being expanded it is held by two vices.
The machine for expanding the tubes into the rings may be varied without
departing from my invention as here-in-before described, for instance the
mandrill F, Sheet 2, may be made to revolve by means of a hand wheel or other
necessary gear, the rod L, being moved by suitable machinery.
Again the mandrill F, Sheet 2, may be driven by any suitable motive power,
for instance a steam, or a gas engine, can be connected by means of belts, and
sheaves, or toothed wheels; I do not limit myself to the particular forms of rings

page_text: that I have illustrated in Sheet 1. The ends of the tubes may be of
pattern.
any
desired
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. A tube having rings or tubes threaded upon it, the tube being expanded by
suitable machinery making the rings or tubes grip the tube substantially as here-
in-before described.
2. A tube having rings of a horse-shoe or other section threaded upon it, the
tube being expanded making parts of it assume nearly the same forms as the
rings substantially as here-in before described.
3. The machinery used to expand these tubes substantially as here-in-before
described.
Dated this 27th day of March 1896.
ROBERT ELLIOTT,
Applicant.