Improvement for Forming Joints in India-rubber Tubes for Bicycle Tyres and the like.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvement for Forming Joints in India-rubber Tubes for Bicycle
Tyres and the like.
JAMES HENRY MEDLOCK, of 6, Albion Terrace, New Fletton, near Peterborough,
Huntingdonshire, Turner, do hereby declare the nature of this invention to be
as follows:-
:-
The invention consists of a cylindrical metal tube with a saw cut down the
centre. The saw cut being of a desired width. The length of the tube is such
that it is equal to twice the length of the lap of the finished joint plus an
allowance for bending. The part allowed for bending is cut open, flattened and
bent to a right angle or thereabouts to allow of its being gripped in a vice.
The india-rubber tube is placed within the metal tube so that the rubber projects
a distance equal to twice the length of the joint. This is then turned over the
outside of the metal tube. The other end of the rubber tube is placed on the
outside of the part which is turned over on the metal tube for a distance equal
to the lap of the joint. The necessary cementing solution is then applied and
the joint is completed in the usual way.
Tate this to third dow of Mov 1800
Improvement for Forming Joints in India-rubber Tubes for Bicycle
Tyres and the like.
I, JAMES HENRY MEDLOCK, of 6, Albion Terrace, New Fletton, Peterborough,
Huntingdonshire, Metal Turner, 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:
A tube (A) (see drawing filed with Complete Specification) of twice the length
of the joint to be made, & rather larger in diameter than the india-rubber tube,
is split throughout its whole length at (B); it is also provided with a lug (C),
(in which, is a slot hole (E)), for holding the whole in a vice, or bolting to a
board or the like.
This lug is at one end, and preferably in one piece with the tube (A).
At the end of the tube (A), on each side of the lug (C), and diametrically
opposite, are two notches (D).
The whole made out of stamped or wrought sheet metal.
In using the invention, one end of the tube in which the joint is to be made

page_text: is put through, and turned inside out over the tube (A) until the end of it covers
the two notches (D); the other end of the india-rubber tube is then stretched
half over the end which is already on the tube (A), and which is inside out.
The whole of the exposed india-rubber tube which is on the tube (A), is then
covered with india-rubber solution. Then the end of the india-rubber tube
which is inside out, and which is covered with india-rubber solution on its
original inside, is taken hold of in the notches (D), which are made for that
purpose, by the thumb and forefinger of each hand, and is drawn over the other
end of the india-rubber tube which is covered with india-rubber solution on its
outside.
When the joint is set, the india-rubber tube is pulled out straight, and is
slipped out of the tube (A), through the slit (B).
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:-
(1) The use of a tube for the making of joints in endless india-rubber tubes
for bicycle tyres and the like, with a slit for the withdrawal of the india-rubber
tube after the joint is made.
(2) The use of a lug with a slotted hole in it; preferably in one piece with the
tube, for holding the whole in a vice, or bolting on a board or the like.
(3) The use of notches in the end of the tube, so that, the india-rubber not
being in contact with the tube, may be easily taken hold of, previously to turning
it back.'
Dated this 2nd day of December 1899.