Improvements in Couplings for Pipes for Conveying Heating Liquids and for similar uses.
Year: 1892

page_text: Date of Application, 13th June, 1892
Complete Specification Left, 11th Mar., 1893-Accepted, 22nd Apr., 1893
PROVISIONAL SPECIFICATION.
Improvements in Couplings for Pipes for Conveying Heating Liquids
and for similar uses.
I, EDUARD SCHELLERRER, Foreman in the Heating Department of the
Imperial and Royal State Railways in Vienna, Austria do hereby declare the
nature of this invention to be as follows:-
The couplings hitherto used for connecting the heating pipes between railway
carriages have consisted of flexible india-rubber pipes or hoses. This construction
had the defect of becoming very soon useless owing to the pipe being damaged and
to small portions of the india-rubber becoming loosened therefrom.
The invention consists in providing a coupling which will remedy these defects,
being entirely made of metal pipes, and thoroughly impermeable in all its parts, and
serving as well whether the heating is effected by hot air, steam or water; more-
over, in consequence of the simple construction of its joints it is, as compared with
the india rubber coupling hitherto used, much more easily manipulated while being
at the same time much lighter in weight.
The improved coupling consists of two metal pipes, one of which is tightly fixed
in elbows, while the other is inserted at one end in a similar elbow and at the other
in the chamber of the valve used for blowing off the condensed water when steam
is used as the heating medium, this chamber being placed in a symmetrical plane.
The elbow pipes at the ends of the respective pipes opposite the front ends of
the carriage are connected in the ordinary manner by other elbow pipes with the
conical appendages of the service pipe which are fixed to the carriages. The
elbow piece at the end of the pipe which is nearest the centre is connected with
the valve chest.
To establish a flexible connection the one set of elbow pipes is connected with.
the other set of elbow pipes and thence with the valve chamber, while the latter
elbows are likewise connected with a further set of elbow pipes by means of a
screw or like joint of peculiar construction, so that each two parts, which are
connected together, can be readily separated by unscrewing without shifting their
position relatively to one another, the whole thus forming (say) five joints so as
fully to ensure the tightness or impermeability of the whole heating pipe coupling.
Each of the (say five) joints consists of a nut or collar provided with a left
handed and a right handed screw thread and in which is screwed one of the
screw threaded ends of the tubular piece to be connected. The other end of
the pipe requiring to be connected thereto i.e. the projection on the valve chest
is formed or
shaped so as to be readily inserted in a recess formed in the first
named tubular piece, a flange being formed which fits the smooth part of the
nut or collar (between the two screw threads) so that the packing ring placed
between the flange and the screwed in pipe end may be firmly fixed. Bebind
the flange, the pipe is shaped or formed to allow a split ring furnished outwardly
with a screw thread to be placed in position, the same being screwed in the nut or
collar.
As the packing ring is firmly fixed, in consequence of the opening or recess
formed therefor, by the pipe and its flange, and the other pipe is screwed in with
an opposite screw thread, the twisting or turning of the two pipes or parts con-
nected together may be possible, but the separation or severance of the connection
is fully prevented. In this manner, the heating pipe coupling may swing upon
the two screw joints connecting the elbow pipes, so that the coupling may follow
the lateral oscillations of the carriages, while the angular position of the two
pipes may be altered in consequence of their jointed connection with the elbow

page_text: pipes and the valve chamber according as the two coupled carriages sway to and
fro, i.e. approach each other or move away one from the other.
When driving over curves the coupling swings outwardly, in consequence of the
centrifugal force developed, upon the screw joints between the pipes, and the pipes
are brought in the extended position required by the necessary prolongation of the
coupling owing to their being able to turn upon the other three screw joints.
It is obvious that the above described coupling may be used for other jointed
connections, such as for pulsometer pipes and the like.
Dated the 13th day of June 1892.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Couplings for Pipes for Conveying Heating Liquids
and for similar uses.
I, EDUARD SCHELLERRER, Foreman, in the Heating Department of the Imperial
and Royal State Railways in Vienna, Austria, 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:-
The couplings hitherto used for connecting the heating pipes between railway
carriages have consisted of flexible india-rubber pipes or hoses. This construction
had the defect of becoming very soon useless owing to the pipe being damaged and
to small portions of the india-rubber becoming loosened therefrom.
The invention consists in providing a coupling which will remedy these defects,
being entirely made of metal pipes, and thoroughly impermeable in all its parts and
. serving as well whether the heating is effected by hot air, steam or water; more-
over, in consequence of the simple construction of its joints it is, as compared with
the india rubber coupling hitherto used, much more easily manipulated while being
at the same time much lighter in weight.
The accompanying drawings illustrate a flexible coupling for heating pipes
constructed according to this invention.
Fig. 1. is a side view, Fig. 2 a plan and Fig. 3. a vertical central section of my
improved coupling.
'
Fig. 4. is a section on an enlarged scale of one of the connections between two
pipes.
The improved coupling consists of two metal pipes a and a¹ one of which is
tightly fixed in elbows b, while the other is inserted at one end in a similar elbow
and at the other in the chest or chamber of the valve g used for blowing off the
condensed water when steam is used as the heating medium, this chest or chamber f
being placed in a symmetrical plane.
C
The elbow pipes b at the ends of the respective pipes a and a¹ opposite the front
ends of the carriage are connected in the ordinary manner by other elbow pipes
and d with the conical appendages of the service pipe which are fixed to the
carriages. The elbow piece at the end of the pipe a which is nearest the centre
is connected with the valve chest f.
To establish a flexible connection, the one set of elbow pipes is connected with
the other set of elbow pipes c and thence with the valve chest or chamber f, while
the latter elbows are likewise connected with a further set of elbow pipes d by
means of a screw or like joint h of peculiar construction, so that each two parts,
which are connected together, can be readily separated by unscrewing without
shifting their position relatively to one another, the whole thus forming (say) five
joints h so as fully to ensure the tightness or impermeability of the whole heating
pipe coupling.
Each of the (say) five joints h consists, as clearly shown in Fig. 4, of a nut or

page_text: collar i provided with a left handed and a right handed screw thread and in which
is screwed one of the screw threaded ends of the tubular piece or d to be
connected. The other end of the pipe requiring to be connected thereto i.e. the
projection on the valve chest or chamber is formed or shaped so as to be readily
inserted in a recess formed in the first named tubular piece, a flange & being thus
formed which fits the smooth part of the nut or collari (between the two screw
threads) so that, the packing ring placed between the flange k and the screwed-in
pipe end may be firmly fixed. Behind the flange, the pipe is shaped or formed 'to
allow the split ring furnished outwardly with a screw thread to be placed in
position, the same being screwed in the nut or collar i.
221
As the packing ring is firmly fixed, in consequence of the opening or recess
formed therefor, by the pipe and its flange, and the other pipe is screwed in with
an opposite screw thread, the twisting or turning of the two pipes or parts con-
nected together may be possible, but the separation or severence of the connection
is fully prevented. In this manner, the heating pipe coupling may swing upon the
two screw joints connecting the elbow pipes c and d, so that the coupling may
follow the lateral oscillations of the carriages, while the angular position of the two
pipes a and a¹ may be altered in consequence of their jointed connection with the
elbow pipes cc and the valve chest or chamber according as the two coupled
carriages sway to and fro ¿e approach each other or move away one from the
other.
When driving over curves, the coupling swings outwardly, in consequence of the
centrifugal force developed, upon the screw joints between the pipes c and d, and
the pipes a and a' are brought in the extended position required by the necessary
prolongation of the coupling owing to their being able to turn upon the other three
screw joints.
The curved tubes c may be also bent in such a manner that after connecting one
of their ends with the tube or pipe a or a the other end of these bent pipes may
extend in an upward direction (instead of outwardly as shown in the drawings).
In this case the bent pipes d are dispensed with, as the bent pipes c are directly
connected by means of the screw joint h with the conical shaped projections of the
conduit pipes.
Accordingly the angular position of the two tubes a and a¹ is rendered possible
as before in consequence of the combination or connexion by means of a joint with
the bent pipes cc and the valve chest or chamber f, while when travelling over
curves the screw connections between the pipes c and the main or conduit pipe
permits of an angular position being assumed by the carriage which has arrived
over the curve relatively to the whole coupling, and by the latter relatively to the
adjoining carriage.
It is obvious that the above described coupling may be used for other jointed
connections such as for pulsometer pipes and the like.
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 jointed coupling for the heating pipes of railway carriages characterized by
two rigid pipes a a' which are connected together or with the chest or chamber ƒ of
the valve, which may in some cases be used for blowing off the condensed water, at
one end and at the other with the elbow pipes c and d which can turn relatively
one to the other, this being effected in such a manner, that the tubular coupling
thus formed swings upon the connections between the pipes c and d and can have
its angular position changed in consequence of its simultaneous turning upon the
joints at the end of the pipes a and a¹.
2. In the heating pipe coupling the characteristic features of which are set forth
in Claim 1 the direct and rotatable connection of the bent pipes c with the main
conduit pipes, so that the coupling may assume, in a vertical as well as in a
horizontal plane, an angular position relatively to the carriages.

page_text: 3. In the coupling for heating pipes described in Claim 1 the arrangement, for
the purpose of jointedly connecting the pipes u a' with the valve chest or chamber f
i.e. with the elbow pipes e and the latter with the elbow pipe d, of the nut or collar i
provided with a left handed and a right handed internal screw thread in which one
pipe is screwed at one end, and the reduced end of a pipe having a flange which
tightly holds the packing material is inserted in the other end, the latter pipe being
firmly held in position by a split ring m screwed into the screw thread formed in
the last mentioned end of the nut so that it (the packing) cannot be loosened should
the pipe behind the flange k turn..
Dated the 7th day of March 1893.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicant.