provements in Flanged Joints for Metal Pipes.
Year: 1894

page_text: Date of Application, 6th Mar., 1894
Complete Specification Left, 3rd Dec., 1894-Accepted, 5th Jan., 1895
PROVISIONAL SPECIFICATION
Improvements in Flanged Joints for Metal Pipes.
We JEAN BAPTISTE JOSEPH LECLAIRE and ALEXANDRE EDMOND
THOMINE both of 95 Boulevard Beaumarchais, Paris, in the Republic of France.
do hereby declare the nature of this invention to be as follows:-
In the joining up of metal pipes used for the supply of steam and water, many
plans have been employed, the principal ones involving the use of turned up or
brazed flanges. The great objection to the use of the brazed flange is, that joints
of this kind resist very imperfectly the vibrating strains to which coupled pipes
are generally submitted, and besides allow of little elasticity in the length of pipe.
Therefore, turned-up flanges, coupled by bolts or otherwise, are preferred. But
this style of coupling has the serious defect of want of strength, for the reason,
that the flange being taken from the length of the pipe itself, and turned over by
hammering, the material at the joint is seriously weakened. Thus, it nearly always
happens, that if the line of pipes is subject to even slight vibrations, the flanges
break, and cause accidents.
With the object of preventing these ruptures, the pipes are sometimes made
much thicker than would be otherwise necessary, thereby entailing considerable
extra expense.
It is with a view of remedying these defects, that we have devised, the system.
of jointing which forms the object of the present invention.
In general form, our system of jointing consists in securing the ends of the pipes
to be united by rivetting, screwing, or any other appropriate method, flanged rings.
prepared for the purpose, and drawing these flanges together by means of gripping
plates applied to the back of the flanges and connected together by nuts and
bolts.
These gripping plates may, if desired, be made to interlock with each other,
the one plate being, for this purpose, recessed to receive the flanges of the coupled.
pipes, and to present an annular space around the periphery of the flanges. At
the inner face of the other plate, an annular rib is formed, which enters the recess.
on the plates being drawn together by the attaching bolts and nuts. In either
case, the usual joint packing will be employed to render the joint steam or water
tight.
•
7
We may remark, that in coupling, say a copper pipe to pipe of cast iron, the
flanged ring will be applied only to the copper pipe, and but one gripping plate.
will be needed, the cast iron flange, serving to receive the bolts, from the loose
gripping plate.
This mode of connecting pipes, has many obvious advantages, not the least of
which is the facility offered of fitting up lergths of pipe by unskilled, labour.
Dated this 6th day of March 1894.
NEWTON & SON

page_text: πριον
A CARE
We JEAN BAPTISTE JOSEPH LECLAIRE and ALEXANDRE EDMOND
THOMINE, both of 95 Boulevard Beaumarchais, Paris, in the Republic of France,
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 :-
In the joining up of metal pipes used for the supply of steam and water, many,
plans have been employed, the principal ones involving the use of turned-up or
brazed flanges. The great objection to the use of the brazed flange is, that joints
of this kind resist very imperfectly the vibrating strains to which coupled pipes
are generally submitted, and, besides, allow of little elasticity in the length of
piping. Therefore, turned-up flanges coupled by bolts or otherwise are preferred.
But this style of coupling has the serious defect of want of strength, for the reason,
that the flange being taken from the length of the pipe itself, and turned over by
hammering, the material at the joint is seriously weakened. Thus, it nearly
always happens that if the line of pipes is subject to even slight vibrations, the
flanges break and cause accidents.
With the object of preventing these ruptures, the pipes are sometimes made
much thicker than would be otherwise necessary, thereby entailing considerable
extra expense.
It is with a view of remedying, these defects, that we have devised the system/of
jointing which forms the object of the present invention...
In general form, our system of jointing consists in securing to the ends of the,
pipes to be united by rivetting, "screwing, or any other appropriate method, flanged
rings prepared for the purpose, and drawing these flanges together by means of.
gripping plates applied to the back of the flanges, and, connected together by
nuts and bolts..
:
.
}
.
་
These gripping plates may, if desired, be made to interlock with each other, the
one plate being, for this purpose, recessed to receive the flanges of the coupled
pipes, and to present an annular space around the periphery of the flanges. At
the inner face of the other plate, an annular rib. is formed, which enters the recess
on the plates being drawn together by the attaching bolts and nuts. In either:
case, the usual joint packing will be employed to render the joint steam or water;
tight.
In the accompanying drawings, various applications of our system of joint are
illustrated..
Fig. 1 shows, in longitudinal section, two ends of pipes with rivetted flanged
rings joined together, by two gripping plates, and secured by the requisite number
of bolts.
}
Fig. 2.shows, in longitudinal section, a modification of the arrangement shown
in Fig. 1; in this example, the gripping plates are interlocking.
Figs. 3 & 34 show, in longitudinal section and face view, a further modification
of the arrangement illustrated in Figs. 1 and 2; in this arrangement, the inter
locking plates are made of such a form as to allow of a considerable reduction in
weight, without decreasing their strength.
..
Fig. 4 shows, in longitudinal section, the application of our invention when only
one of the pipes to be joined is furnished with a flanged ring. This form is suitable
for joining a cast iron and a copper pipe.
Figs. 5 and 6 show, in section and in face view, a form of joint for pipes of small
diameter, where the flanged rings, instead of being rivetted, are screwed onto the
"end of the nines to be united.

page_text: In the arrangement shown at Fig. 1, A, B, are the ends of the two metal pipes
to be joined. M is the flanged ring rivetted upon the end of the pipe A. N is
the flanged ring rivetted upon the end of the pipe B. K is the packing of plastic
material interposed between the flanges of the rings M and N.
D and D are the gripping plates (in the form of washers of equal thickness) of
the pipes A and B. Rare bolts for screwing the plates together, placed in
sufficient number round the same.
The arrangement shown at Fig. 2 differs only from the arrangement shown at
Fig. 1 in the shape of the gripping plates D and D', which are interlocking.
Figs. 3 and 34 also show interlocking gripping plates in which the material is
so distributed as to secure the utmost strength and pressure with the minimum
amount of metal.
Fig. 4 shows the application of our invention for joining an ordinary iron pipe
cast with a flange thereon, to a pipe fitted with the flanged ring. In this case,
only a single gripping plate D is necessary, and the packing material to form the
joint is interposed between the cast iron flange of the pipe A and the flanged ring
secured to the pipe B.
As indicated in Figs. 5 and 6, when dealing with pipes of small diameter, the
flanged rings M and N are screwed onto the ends of the pipes A and B, as, owing
to the small diameter of these pipes, rivetting would be impracticable.
This mode of connecting pipes has many obvious advantages, not the least of
which is the facility offered of fitting up lengths of pipe by unskilled labor.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
The system of joint for metallic tubes, consisting in the adaptation, by the aid
of rivets, screwing, or by any other appropriate means, to the extremities of pipes
to be joined, of metallic flanged rings capable of being (after the interposition
between them of packing) pressed one against the other by means of gripping
plates and bolts, substantially as explained with reference to the drawings.
Dated this 30th day of November 1894.
NEWTON & SON,
Agents for the Applicants