Improvements in Connecting Metallic Pipes.
Year: 1890

page_text: Date of Application, 8th Mar., 1890
Complete Specification Left, 28th Nov., 1890-Accepted, 3rd Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Connecting Metallic Pipes.
We CAMPBELL GROVE HARRISON of Fair View House Halesowen in the County of
Worcester Foreman and HENRY HOWARD of the firm of Lloyd and Lloyd of Comb's
Wood, Halesowen aforesaid Manufacturers do hereby declare the nature of this
invention to be as follows:
The said invention consists of the improvements hereinafter described in connecting
metallic pipes end to end by which improvements metallic pipes such for example as
gas and water pipes and the like may be connected and disconnected very readily and
when connected the junction is very strong and secure.
On the end of each of the pipes to be joined we fix a flange having four or other
number of radial arms each of the said arms extending preferably through an arc of
about thirty degrees.
The radial armis on one of the flanges are about double the length of those on
the other flange and the said longer radial arms are folded or doubled inwards so as
to form a series of clips.
The short arms on the flange of the other pipe are flat or unbent. When the end
of the pipe with the flange having short arms is presented to the end of the other pipe
the short arms of the first named pipe being presented to the spaces between the clips
on the end of the other pipe and the said first named pipe is turned through a small
angle its short arms enter the clips on the end of the other pipe and the ends of the
two pipes become firmly locked together.
The short arms of the one flange and the clips of the other may be slightly inclined
so that the short arms in entering the clips draw the two flanges tightly together and
thereby form a very secure joint. Washers or packing of india rubber, leather or
other elastic or flexible material may be used between the flanges or after the ends of
the pipes have been connected together the junction may be luted by cement or other
lute or welded.
In connecting the ends of the pipes together the short arms of one pipe may be
forced tightly into the clips of the other by a screw clamp.
Although we prefer to make the short arms and clips slightly inclined yet we
do not limit ourselves thereto as the said arms and clips may be parallel to the
flanges.
Where necessary or desirable as where the joined pipes are likely to be exposed
to strains or vibrations, the position of the arms in the clips may be fixed by means of
screws or otherwise fixed.
We prefer to make the flanges and arms of cast steel but we do not limit ourselves
to the use of any particular material nor to any method of making the said flanges,
clips and arms.
The said flanges may attached to ends of the pipes by welding, brazing or screwing
or by shrinking, but we prefer to connect them by forming an annular groove in the
inner edge of the flange and expanding the end of the pipe into the said groove.
Dated in 0.1
M
1. 1000

page_text: COMPLETE SPECIFICATION.
Improvements in Connecting Metallic Pipes.
We CAMPBELL GROVE HARRISON of Fair View House, Halesowen in the County of
Worcester Foreman and HENRY HOWARD of the firm of Lloyd and Lloyd of
Coombs Wood Halesowen aforesaid Manufacturers do hereby declare the nature
of the said invention and in what manner the same is to be performed to be particularly
described and ascertained in and by the following statement :-
The said invention consists of the improvements hereinafter described in connecting
metallic pipes end to end by which improvements metallic pipes such for example as
gas and water pipes and the like may be connected and disconnected very readily and
when connected the junction is very strong and secure.
On the end of each of the pipes to be joined we fix a flange having four or other
number of radial arms each of the said arms extending preferably through an arc of
about thirty degrees.
The radial arms on one of the flanges are about double the length of those on
the other flange and the said longer radial arms are folded or doubled inwards so
as to form a series of clips; or the clips and flanges may be made by casting,
The short arms on the flange of the other pipe are flat or unbent. When the end
of the pipe with the flange having short arms is presented to the end of the other
pipe the short arms of the first nained pipe being presented to the spaces between the
clips on the end of the other pipe and the said first named pipe is turned through a
small angle its short arms enter the clips on the end of the other pipe and the ends of
the two pipes become firmly locked together. The short arms of the one flange and
the clips of the other may be slightly inclined so that the short arms in entering the
clips draw the two flanges fightly together and thereby form a very secure joint.
Washers or packing of india rubber leather or other elastic or flexible inaterial may
be used between the flanges or after the ends of the pipes have been connected together
the junction may be luted by cement or other lute or welded.
In connecting the ends of the pipes together the short arms of one pipe may be forced
tightly into the clips of the other by a screw clamp or other forcing tool.
Although we prefer to make the short arms and clips slightly inclined yet we do
not limit ourselves thereto as the said arms and clips may be parallel to the flanges.
Where necessary or desirable as where the joined pipes are likely to be exposed to
strains or vibrations the position of the arms in the clips may be fixed by means of
screws or otherwise fixed.
We prefer to make the flanges and arms of cast steel but we do not limit ourselves
to the use of any particular material nor to any method of making the said flanges
clips and arms,
The said flanges may be attached to the ends of the pipes by welding brazing or
screwing or by shrinking or by forming an annular groove in the inner edge of the
flange and expanding the end of the pipe into the said groove.
We will now proceed to describe with reference to the accompanying drawing the
inanner in which the said invention is to be performed.
Figure 1 represents in end elevation and Figure 2 in side elevation, the ends of
two metallic pipes connected together according to this invention; Figure 3
represents in elevation a portion of the two tubes drawn to a larger scale exhibiting
the positions of one of the radial arms and its clip before they are engaged together;
Figure 4 represents in vertical section and Figure 5 in horizontal section the radial
arm and clip engaged together; Figure 6 represents a portion of the end of the pipe
carrying the radial arm detached from the other end of the pipe drawn to the same
scale as Figures 3, 4, and 5.
The same letters of reference indicate the same parts in the several figures of the
drawing.
a, bare the ends of the two metallic pipes to be connected together. On the end of
the pipe a is a flange a having on its outer edge four projecting radial arms c c.

page_text: These arms are flat on one side and slightly inclined on the other side the inclined
side being marked in Figures 3 and 5. On the end of the pipe b is a similar
flange the outer edge of which is provided with a series of four clips d, d at the
same distances apart as the radial arms cc on the flange a³. The clips d are either
made by bending long arms on the flange into the arch shaped form represented or by
casting them with the flanges of the shape represented.
One of the sides of each of the clips d is slightly inclined internally the inclined
side of the clip being marked d in Figures 3 and 5. The flanges a² 62 and their
arms c c and clips d d are preferably made of cast steel and the said flanges are
attached to the ends of the pipes by making annular grooves in the said flanges and
expanding the ends of the pipes into the said grooves, as represented in Figure 4 but
the flanges carrying the connecting arms and clips may be welded brazed screwed or
shrunk on the ends of the pipes.
In connecting the ends of the two pipes a and b together the flange a having the
radial short arms cc is placed against the flange & carrying the clips d d in such a
position that the short arms c, c are situated in the spaces between the clips d d as
indicated in dotted lines in Figure 1. By turning the pipe a through a small angle
in the direction of the arrow Figure 1 its short arms cc enter the clips d d on the
end of the pipe and lock the two pipes firmly together. As the short arms c c enter
the clips d, d their inclined sides at bearing against the inclined sides at of the
clips dd draw the two flanges a, b tightly together and form a very secure joint.
Washers or packing rings let into annular grooves in the abutting faces of the two
flanges a² may be used to ensure the formation of a liquid, gas or air tight joint;
or the junction of the two pipes may be luted cemented or welded together. We do
not limit ourselves to the number of arms and clips represented in the drawing as two,
three or more than four may be employed.
The engaging parts of the radial arms cc and clips d d may be made parallel instead
of making one side inclined as shown in the drawing.
In order to obtain additional security in the junction of the two ends of the pipes
the engaged arms and clips may be fixed together by screws or other fastenings.
Having now particularly described and ascertained the nature of the said inven
tion and the manner in which the same is to be performed we declare that we
claim as the said invention :-
The improvements in connecting metallic pipes hereinbefore described and
illustrated in the accompanying drawing; that is to say, forming on the end of one
pipe a flange carrying on its edge two or more radial arms one of their bearing faces
being preferably inclined and forming on the end of the other pipe a similar flange
carrying on its edge two or more clips one of their bearing faces being preferably
inclined and securely connecting the two pipes together by the engaging or locking
of the radial arms on the flange of one pipe with the clips on the flange of the other
pipe substantially as described and illustrated.
Dated the 26th day of November 1890
CAMPBELL GROVE HARRISON.
HENRY HOWARD.