High Pressure Steam and Hydraulic Flange Joints for Pipes.
Year: 1895

page_text: Date of Application, 10th Oct., 1895
Complete Specification Left, 30th June, 1896-Accepted, 12th Sept., 1895
PROVISIONAL SPECIFICATION.
High Pressure Steam and Hydraulic Flange Joints for Pipes.
WILLIAM CAIRNS 5 Finnart Street Greenock in the County of Renfrew
North Britain, Engineer JOHN LAIRD 31 Trafalgar Street Greenock in the
County of Renfrew North Britain Coppersmith, do hereby declare the nature of
this invention to be as follows :—
A flange having an annular ridge formed on face near inner edge, of such a form
that when clasped or holted against another flange or faced surface having inner
portion of face slightly raised-so that the annular ridge aforesaid will press hard
upon this point, while the other parts of faces are not in contact, thereby forming
a joint capable of withstanding high pressures.
Dated this 9th day of October 1805
WILLIAM CAIRNS.
JOIN LAIRD.
High Pressure Steam and Hydraulic Flange Joints for Pipes.
We WILLIAM CAIRAs, Engineer & Pant Street, JoHN LAI Coppersmith
31 Trafalgar Street both of Greenock, in the County of Renfrow North Britain,
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 :-
Our said invention has for its object an improved inode of making the joints of
pipes of copper or other metal or alloys, to render such joints more durable and
more capable of withstanding high pressures than the pipe joints heretofore
in use.
It is also applicable to all joints of brass mountings, brass, steel, cast iron and
other metals or alloys.
In carrying out our invention on copper brass, steel or other metals, we braze
or screw the flanges on the pipes, but prepare the flanges with a narrow ridge or
ridges on the one the other having a plain face or with inner portion of face
slightly raised.
The holt holes for securing them together are bored or cored out an easy fit
for the bolts and we complete the joint by drawing the two flanges together by
screw bolts, so that the ridge or ridges on the one is pressed hard up to the flat
face on the other, no intervening joint being required.
An example of our improved pipe joint is delineated in the accompanying sketch,
the pipe and joint being shown in longitudinal section.
The pipe lengths A have flanges B. C. brazed or otherwise secured to them,
flange B having an annular ridge E formed on face near inner edge. Flange C
baving a plain face or with a slightly raised part at inner edge where it comes in
contact with ridge E on flange B. Then by compressing the flanges together by
screw bolts D, a tight joint capable of withstanding high pressures and not liable
to give way is formed.

page_text: When two flanges of different metals require to be jointed together under our
system, the annular ridge E is to be formed on the flange which is made of the
softer metal.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is
The making of pipe or other joints by means of a narrow annular ridge or
ridges, formed on the flange or cover to be jointed and compressed by screw bolts
as hereinbefore described.
WILLIAM CAIRNS,
JOHN LAIRD,
Applicants.