Improvements in Flexible Metal Tubing.
Year: 1899

page_text: Date of Application, 24th Mar., 1899
Complete Specification Left, 27th Dec., 1899-Accepted, 27th Jan., 1900
Improvements in Flexible Metal Tubing.
I, WILLIAM GEORGE BARTON, of 15, Lady Margaret Road, Kentish Town, N.W.,
Clerk, do hereby declare the nature of this invention to be as follows:-
In appliances where a flexible shaft is employed, it is usual to enclose the
shaft within a tube for the protection of the shaft, such tube being necessarily
also flexible.
It has been found in practice, that it is desirable that the degree of flexibility
of this tube should vary in different parts of the tube, according to the circum-
stances under which the flexible shafting is to be used, and the object of this
invention is so to produce a tube of this character, that its flexibility may be
increased or diminished at one or more points in its length, as desired.
In carrying out this invention I cut strips of suitable metal, or other suitable
material, of varying widths, and I coil these strips round a mandril with
graduated spaces.
The larger spaces will preferably be where the strip is the narrowest, and
rie versa, and thus the necessary degree of flexibility desired in any position of
the tube is obtained.
NEWTON & SON,
Agents for the Applicant.
Improvements in Flexible Metal Tubing.
I, WILLIAM GEORGE BARTON, of 15, Lady Margaret Road, Kentish Town, N.W.,
Clerk, 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:-
In appliances where a flexible shaft is employed, it is usual to enclose the
shaft within a tube for the protection of the shaft, such tube being necessarily
also flexible.
It has been found, in practice that the degree of flexibility of this tube should
vary in different parts of the tube, according to the circumstances under which
the flexible shafting is to be used, and the object of this invention is so to
produce a tube of this character, that its flexibility anay be increased or
diminished at one or more points in its length as desired.
In carrying out this invention I cut strips of suitable metal or other suitable
material of varying widths, and I coil these strips round a mandril.

page_text: In the accompanying drawings I have illustrated at Fig. 1 a strip of metal such
as I use for my flexible tube. Preferably this strip at the widest end is half an
inch wide and it tapers down to one eighth inch.
This strip is wound on a mandril as already mentioned as shown in Fig. 2 to
produce the flexible tube and where the narrowest part of the strip comes there
the greatest amount of flexibility is obtained.
Of course this strip may be of varying widths so that the flexibility of the
tube formed therefrom may be varied according to requirements.
I find that for ordinary purposes close coils as shown serve the desired end
but in cases where a still greater flexibility is desired the spaces between the
coils may be graduated.
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:-
A flexible tube composed of a taper strip or strips of material or a strip or
strips of material of varying width formed into a coil as herein shown and
described.