An Improved Method of and Means for Diametrically Compressing Flexible Tubes, Pipes, and the like.
Year: 1898

page_text: COMPLETE SPECIFICATION.
An Improved Method of and Means for Diametrically Compressing
Flexible Tubes, Pipes, and the like.
I, EREDERIC HUGHES, of 20, Paget Road, West Dulwich, Engineer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed to be particularly. described and ascertained in and by the following
statement;
My invention relates to an improved method of and means for diametrically
compressing flexible tubes pipes and the like and the object is to provide a simple
and effective means for regulating or preventing the passage of fluids through the
said tubes, whether used in connection with taps and the like which are the sub-
ject matter of my Patent No. 18172 of A.D. 1897 or for any other purposes In
carrying my invention into effect I proceed in or in about the following manner
making reference to the accompanying drawings in which Fig. 1 is a side view
and Figs. 2 and 3 cross sections showing respectively the two positions of the
parts when the flexible tube is compressed and closed and when it is open. Similar
letters denote the same parts wherever occurring. I pass the flexible tube a
through a circular part 6 having a groove c therein in which is free to turn the
elliptical or similar ring d. Passing radially and diametrically through the ring d
are two holes e in which are free to move in and out the pushes or pistons f and
knobs or
equivalents 9 are provided to facilitate the turning of the ring d. When
the ring d is in the position shown in Fig. 2 the pushes or pistons f are pressed in
and pinch opposite sides of the tube a into contact and so close the tube. When
however the ring d is in the position shown in Fig. 3 the pushes or pistons f are
sprung out by the resiliency of the tube and the tube is open for the passage of
whatever is to flow through it. If desired spiral or other springs may be provided
round or in connection with the pushes or pistons f to force them out indepen-
dently of the resilient action of the tube a. It will be seen that the shorter
diameter of the ring must be equal to the diameter of the circular part round
which the ring is free to turn and that its larger internal diameter must be about
the diameter of the flexible tube in excess of the shorter diameter. The length
of the pushes or pistons must be arranged accordingly so that in the one position
of the ring they will clip the tube a between their inner ends and in the other
position allow the tube to expand to its full diameter.
The ring d may run round a projection on, instead of in a groove in, the part b
and in that case inay have downturned edges or portions to prevent lateral move-
ment. A stop or stops may be provided to limit the rotary movement of d.
I do not confine myself to the precise relative proportions or disposition of parts
as shown in the drawings as some variations are possible without departure from
the essential features of the invention.
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;-
La improved mothed of and marns for diametrically compressing Aexible tubes

page_text: pipes and the like for use in taps draw off cocks or for any other purposes the
said method and means consisting essentially in passing the flexible tube or the
like axially through a circular piece of material around which is free to move in
a groove or otherwise an elliptical or similar ring by rotary movement of which
are pressed in or allowed to project pushes or pistons free to move in and out of
holes provided in the said circular piece of material and having radial and coin-
cident axes, the whole substantially as described in the above specification and
exemplified in the accompanying drawings.
Dated this 25th day of October 1898.