Improvements in Pipe Joints.
Year: 1899

page_text: Improvements in Pipe Joints.
I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., of 18, Buckingham
Street, Strand, W.C., Patent Agent, do hereby declare the nature of this inven-
tion, a communication to me from abroad by Otto Siedentopf, of Behrenstrasse 53,
Berlin, W., Engineer, to be as follows:-
This invention relates to improvements in pipe couplings for connecting
branch pipes with the pipe of gas or water main and differs from the
hitherto used similar devices in having the end of the branch pipe pressed
directly against the main pipe to be connected therewith, an absolute tightness
of the junction being obtained.
In the annexed drawing;
Figure 1 is a view partially in section of the coupling in conjunction with the
pipes to be connected therewith;
Figure 2 a section on the line A B of Figure 1;
Figure 3 the plan view of the coupling.
Figure 4 the view of the upper part showing another form of construction
of the coupling.
Figure 5 a section on line CD of Figure 4.
Figure 6 a plan view of the wedge for the form of construction shown in
Figure 4 and 5.
The coupling consists of a two-part collar cl 2 surrounding the main pipe a
and enclosing the end of the branch pipe b, the two halves of the collar engage
by hooks or in any other suitable manner one into the other. Whilst the
lower part of the collar touches only the main pipe a, its upper half reposing
like a saddle on the main pipe a is provided with an opening through which the
branch pipe.b provided on its end with a flange or saddle a passes freely.
In Figures 1 and 3 the blunt end of pipe b is pressed against the main
pipe a (with interposition preferably of a washer e) by two screws f which
press with their lower ends on the flange d of the pipe b whilst their threads
engage in the upper part 2 of the collar.
In the construction shown in Figures 4 to 6 the pressing of the branch
pipe against the main pipe a is effected by a fork-shaped wedge y
(Figure 6) which is driven between the flange d and the upper collar-half c.
It will be seen that in the described coupling. it is not the collar itself
which is made fluid or gas tight but this collar serves only as a means of pressing
the end of the branch pipe b directly against the main pipe a whereby an
entirely tight connection of both pipes is assured.
The number of wedges or screws for fastening-the coupling may vary accord-
ing, to circumstances.

page_text: I, REGINALD HADDAN, of the Firm of Herbert Haddan & Co., 18, Buckingham
Street, Strand, W.C., Patent Agent, do hereby declare the nature of this inven-
tion, a communication to me from abroad by Otto Siedentopf, of Behrenstrasse 53,
Berlin, W., Engineer, and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:―
This invention relates to improvements in pipe couplings for connecting
branch pipes with the main pipe of gas or water conduits and differs from the
hitherto used similar devices in having the end of the branch pipe pressed
directly against the main pipe to be connected therewith; an absolute tightness
of the junction being obtained.
In the drawing, left with my Provisional Specification
Figure 1 is a view partially in section of the coupling in conjunction with the
pipes to be connected therewith;
Figure 2 a section on the line A B of Figure 1;
Figure 3 the plan view of the coupling.
Figure 4 the view of the upper part showing another form of construction
of the coupling.
Figure 5 a section on the line C D of Figure 4.
Figure 6 a plan view of the wedge for the form of construction shown in
Figures 4 and 5.
The coupling consists of a two-part collar c¹, c, surrounding the main pipe a
and enclosing the end of the branch pipe b, the two halves of the collar engage
by hooks, or in any other suitable manner one into the other. Whilst the
lower part of the collar touches only the main pipe a, its upper half reposing
like a saddle on the mainpipe a, is provided with an opening through which the
branch pipe b, provided on its end with a flange or saddle d, passes freely.
In Figures 1 and 3 the blunt end of the pipe b, is pressed against the main
pipe a, (with interposition preferably of a washer e) by two screws f, which
press with their lower ends on the flange d, of the pipe b, whilst their threads
engage in the upper part 2 of the collar.
In the construction shown in Figures 4 to 6 the pressing of the branch
pipe b, against the main pipe A, is effected by a fork-shaped wedge g,
(Figure 6) which is driven between the flange d, and the upper collar half c².
It will be seen that in the described coupling it is not the collar c¹, c³, itself
which is made fluid or gas tight, but this collar serves only as a means of pressing
the end of the branch pipe b, directly against the main pipe a, whereby an
entirely tight connection of both pipes is assured.
The number of wedges or screws for fastening the coupling may vary accord-
ing to circumstances.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:-
1. A pipe joint wherein the end of the branch pipe b, is pressed directly
against the main pipe a, by means of screws f, or wedges g, which have bearing

page_text: on a wedge or saddle & on the end of the branch pipe 6 and engage or have
counter-seating in one of the parts of the bipartite collar c² c³ surrounding
the main pipe.
Dated th: 10th
AT
1000