Year: 1886

page_text: I, STEPHEN ALLEY, of the Sentinel Works, Polmadie, in the County of Renfrew,
North Britain, Engineer, do hereby declare the nature of this Invention to be as
follows, that is to say:-
My said Invention has for its object the combining of parts in an improved
manner to form flexible tubing which will stand considerable wear and tear such
as the flexible connecting pipes are subjected to, that are used in railway pneumatic
brake apparatus.
:
My improved flexible tubing consist of a series of short lengths of metallic
tubes coupled together in an improved manner. The adjacent ends of two tube
lengths are formed with faucets and the lengths are connected so that the edges of
the faucets are brought nearly, but not quite, close to each other. A short coupling
piece of tubing of rubber, leather, or other suitable flexible material is placed so as
to fill or nearly fill the faucet enlargements and a short tube of thin metal is
placed inside of this flexible coupling piece. A thin metal band or a covering of
fine wire may also be placed on the outside of the flexible coupling piece at its
middle to prevent it from getting out between the edges of the faucets or a wire
helix may be embedded in the flexible coupling piece. The metallic tube lengths
are connected by external coupling pieces which are by preference shaped like
short barrel-shaped tubes so as also to cover and protect the joints. Each external
coupling piece is made in halves; and in one modification the coupling piece is
jointed on four pins like trunnions formed or fixed on the faucets, a pair of the
trunnion pins being on each faucet. The halves of the coupling piece are fixed
together by screws or hinges, and the bearings for the trunnion pins may be
formed half in each half coupling piece so that the half coupling pieces are attached
to the trunnion pins whilst being fixed to each other or the bearings may be made
in the coupling pieces at right angles to the joints. In another modification the.
external coupling pieces are simply made with contracted or turned-in ends which
bear on the external shoulders of the faucets, the bearing surfaces being shaped
spherically or so as to allow of the slight inclination of the tube lengths to each
other intended to be provided for. The several parts of the flexible tubing, are,
by preference, prevented from turning about their axes relatively to each other in
any convenient way, as for examples by projections on the metallic tube lengths
arranged to engage in notches in the edges of the external coupling pieces.
Dated this nineteenth day of January 1886.
-
"

page_text: I, STEPHEN ALLEY, of the Sentinel Works, Polmadie, in the County of Renfrew,
North Britain, 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, that is to say :-
My said Invention has for its object the combining of parts in an improved
manner to form flexible tubing which will stand considerable wear and tear such
as the flexible connecting pipes are subjected to that are used in railway pneumatic
brake apparatus.
My improved flexible tubing consists of short lengths of metallic tubes coupled
together in an improved manner. The adjacent ends of two tube lengths are
formed with faucets, and the lengths are connected so that the edges of the faucets
are brought nearly but not quite close to each other. A short coupling piece of
tubing of rubber, or leather, or other suitable flexible material is placed so as to fill
or nearly fill the faucet enlargements and a short tube or ring of thin metal is
placed inside of this flexible coupling piece. A thin metal band or a covering of
fine wire may also be placed on the outside of the flexible coupling piece at its
middle to prevent it from getting out between the edges of the faucets; or a wire
helix may be embedded in the flexible coupling piece. The metallic tube lengths
are connected by external metallic coupling pieces or boxes, which are by preference
shaped like short barrel-shaped tubes so as also to cover and protect the joints.
Each external coupling piece is made in halves; and in some modifications the
coupling piece is jointed on four pins like trunnions formed or fixed on the faucets
or inner tube lengths, a pair of the trunnion pins being on each faucet. In other
modifications the external coupling pieces are simply made with contracted or
turned-in ends which bear on the external shoulders of the faucets, the bearing
surfaces being shaped spherically or so as to allow of the slight inclination of the
tube lengths to each other intended to be provided for.
And in order that my said Invention and the manner of performing the same
may be properly understood I hereunto append two sheets of explanatory drawings
to be hereinafter referred to and representing various modifications of my improved
flexible tubing.
Figure, 1, is a view, partly in elevation and partly in section of a short portion
of one modification and figure, 2, is an inside view of one of the external half
coupling pieces. Figures, 3, and 4, show a second modification, figures, 5, and 6, a
third modification and figures, 7, and 8, a fourth modification, figures, 4, 6, and 8,
being sectional. In these drawings the same reference numerals are used to mark
the same or like parts wherever they are repeated.
My improved flexible tubing is made up of short inner metallic tube lengths, 10,
connected by external metallic coupling pieces or boxes, 11, and having the joints
closed internally by short tubes, 12, of rubber or other suitable flexible material.
The rubber tubes, 12, are held in faucets or enlargements formed in the ends of the
inner metallic tubes, 10; and to support and keep them in their places thin metal
tubes or rings, 13, with slightly flanged-in ends are placed inside of them; whilst
outside of them thin metal bands or rings, 14, are placed to prevent them from
getting into the space between the adjacent faucets. The external coupling pieces
L..

page_text: or boxes, 11, are made in halves which are shown as fixed together by screws but
which may be connected by hinges or in any other convenient way. Each inner
metal tube, 10, has formed on it at each end two diametrically opposite trunnions, 15,
which project into sockets made for them in the external coupling pieces, 11. These
sockets for the trunnions, 15, may be made as shown in figures, 1, and 2, at the
joint of the coupling piece, 11, and half in each half coupling piece; or they may
be made at right angles to the joints of the external coupling pieces, 11, as shown
in figures, 3, to 8.
The modification shown in figures, 3, and 4, differs from that shown in figures, 1,
and 2, merely in the relative positions of the trunnion sockets as already explained.
In the modification shown in figures, 5, and 6, the internal supporting rings, 13,
are made shorter and support is given to the insides of the rubber tubes, 12, by
extensions, 16, of the bodies of the inner metal tubes, 10, the faucets or recesses
for the ends of the rubber tubes being made in the form of annular grooves. In
the modification shown in figures, 7, and 8, the extensions of the body parts of the
inner metal tubes, 10, are increased and instead of supporting rings, (13) between
the ends of the metal tubes, 10, thin metal bands or rings, 17, are placed outside of
the body extensions and inside of the rubber tubes, 12. This modification will
probably be better suited than the others when the internal pressure is less than
that of the atmosphere.
In all the figures the trunnions, 15, are shown as arranged for continuous
bending in one plane, each length or section being capable of being inclined to a
small extent relatively to the adjacent lengths or sections; but when flexibility in
different directions is required each or any one of the inner metal tube lengths, 10,
may have its trunnions at one end placed at right angles or other angles to those
at its other end; or the pair of sockets for the trunnions of one inner tube length
may, in the external coupling piece, be at right angles to the pair of sockets for
the trunnions of the other inner tube length; or, again, there may be four
trunnions at right angles to each other at each end of each inner tube length, the
sockets for them in the external coupling piece being longitudinally elongated.
The several parts of the flexible tubing may be prevented from turning about
their axes relatively to each other in any convenient way, as for example by
projections on the inner metallic tube lengths, 10, arranged to engage in notches in
the edges of the external coupling pieces, 11.
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 improved flexible tubing made up of inner metallic lengths, with
external metallic coupling pieces or boxes, also with short rubber or other flexible
tubes held in faucets at the ends of the inner metallic lengths, and also with thin
metal supporting or strengthening rings, the several parts being constructed and
arranged or combined together substantially as hereinbefore described and as
shown in the accompanying drawings.
2-The connecting of internal metallic tube lengths to external metallic coupling
pieces or boxes by trunnions substantially as and for the purposes herein before
described.
תנית
1000
EDMUND HUNT,
Applicant's Agent.