Improvements in Devices for and Method of Connecting the Ends of Tubes in Boilers and Heating Apparatus
Year: 1889

page_text: Date of Application, 7th Aug., 1889
Complete Specification Left, 7th May, 1890-Accepted, 19th July, 1890
PROVISIONAL SPECIFICATION.
Improvements in Devices for and Method of Connecting the Ends of
Tubes in Boilers and Heating Apparatus.
A communication to me from abroad by RUDOLF VON SCHMITZ, Agent, of Bremen,
in the Empire of Germany.
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of Middlesex,
do hereby declare the nature of this invention to be as follows:--
This invention relates to boilers and heating apparatus in which tubes containing
water are used the ends of which have to be connected together in pairs by curved
pipes or bends, and it has for its object novel methods of jointing and attaching such
bends to the ends of the pipes.
The ends of the two pipes which are to be connected together are turned slightly
conical and fit into corresponding conical sockets in the ends of the conical bend
which is to connect them so that if they are drawn together a tight joint is made
between their conical surfaces.
For the purpose of drawing them together the part of the projecting tube behind
the conical end is made of somewhat larger diameter and has a screw thread formed
upon it upon which a strong nut can be screwed up outside the tube plate.
The nut has two lugs or cars upon it corresponding with two similar lugs or ears
upon the socket at the end of the bend, and the two can be drawn tightly together by
means of bolts, or studs screwed into the nut and passing through the lugs upon the
socket their outer ends being provided with nuts by which the conical surfaces are
drawn tightly together to make the joint.
In a modified form of construction the projecting end of the tube behind the
conical part has an annular recess formed round it into which is fitted a flange or ring
made in two parts connected together by lugs or cars into which studs are screwed
so as to hold the parts of the flange together upon the tube, the ends of the studs
passing through the lugs upon the socket on the bend and having nuts by which the
latter can be screwed up as in the arrangement first described.
The projecting ends of the parts forming the ring are recessed into each other so
that the ring is the same thickness throughout.
Date : 741 d
1001
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Devices for and Method of Connecting the Ends of
Tubes in Boilers and Heating Apparatus.
A communication to me from abroad by RUDOLF VON SCHMITZ, Agent, of Bremen,
in the Empire of Germany.
I, EDMUND EDWARDS, of the firm of Edwards and Co., Patent Agents and
Engineers, of 35, Southampton Buildings, Chancery Lane, in the County of
Middlesex, 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 and accompanying drawing (that is to say)
:―
This invention relates to boilers and heating apparatus in which tubes containing
water are used the ends of which have to be connected together in pairs by curved
ลา

page_text: pipes or bends and it has for its object novel methods of jointing and attaching such
bends to the ends of the pipes.
In the accompanying drawing, which is in illustration of the invention, figure 1 is
a front view of two pipes which are to be connected, the connecting pipe being shewn
broken off.
Figure 2 is a plan of the same partly in section.
The ends of the two pipes a a which are to be connected together are turned slightly
conical and fit into corresponding conical sockets in the ends of the bend which is
to connect them so that if they are drawn together a tight joint is made between their
conical surfaces.
For the purpose of drawing them together the part of the projecting tube behind
the conical end is made of somewhat larger diameter and has a screw thread formed
upon it upon which a strong nut c can be screwed up outside the tube plate.
The nut has two lugs or cars upon it corresponding with two similar lugs or ears
upon the sockets at the end of the bend b, and the two can be drawn tightly together
by means of bolts or studs screwed into the nut. c and passing through the lugs upon
the socket their outer ends being provided with nuts by which the conical surfaces
are drawn tightly together to make the joint.
In a modified form of construction illustrated in figures 3, 4, and 5, the projecting
end of the tube a¹ behind the conical part has an annular recess formed round it into
which is fitted a flange or ring e¹ made in two parts connected together by lugs or
ears into which studs are screwed so as to hold the parts of the flange together upon
the tube, the ends of the studs passing through the lugs upon the socket on the bend
as shewn in figure 2, and having nuts by which the latter can be screwed up as in the
arrangement first described. The projecting ends of the parts forming the ring are
recessed into each other as shewn in figure 5 so that the ring is the same thickness
throughout.
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. In boilers and heating apparatus the method of connecting the ends of tubes
by means of a bent pipe having conical sockets fitting upon the corresponding conical
ends of the tube the ends of the tubes beyond the conical part being enlarged and
screwed or otherwise formed to receive nuts having lugs to receive studs or bolts
passing through corresponding lugs upon the bent pipe, substantially as described and
shewn.
2. The modified method of construction shewn in figures 3, 4 and 5, in which the
ends of the tubes beyond the conical pari are reduced in diameter, and the nuts
or rings fitting upon them are made in two halves, substantially as described and
shewn.
Dated this 7th day
1000
EDWARDS & Co.,
35, Southampton Buildings, Chancery Lane, London,
Agents for the Applicant.