similar Metal or Alloy.
Year: 1886

page_text: similar Metal or Alloy.
I, ROBERT BAND POPE, of the firm of Denny and Company, of Dumbarton,
in the County of Dumbarton, North Britain, Engineer, 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,
that is to say :-
My said Invention has for its object, by an improved mode of making the joints
of pipes of copper or other similar metal or alloy, to render such joints more
durable and more capable of withstanding high pressures than the pipe joints
heretofore in use.
In carrying out my Invention according to one modification in the case of a
copper steam pipe I make the joint without flanges brazed or otherwise fixed on
the ends of the pipe lengths. Instead of flanges brazed or fixed on the pipe lengths
I use detached rings of castiron, or steel, or malleable iron; and I flange out the
ends of each copper pipe length, so that the turned out faces of the two adjacent
flanges at a joint may meet in close contact. I form the rings with narrow
annular ribs to bear on the outsides of the copper flanges; and I complete the
joint by drawing the two rings towards each other by screw bolts so that their
ribs may nip the copper flanges together between them.
An example of my improved pipe joint is delineated in the accompanying
explanatory drawing, the pipe and joints being shown in longitudinal section.
The copper pipe lengths, A, have flanges, B, C, formed on their ends, one at least
of these flanges being formed after two joint rings, D, E, have been strung upon
each pipe length. The joint rings, D, E, are formed with projecting annular
ribs, R, which when the rings are drawn together by screw bolts, S, bear on the
flanges, B, C, and by compressing the flanges together form a tight joint capable
of withstanding a high pressure and not liable to give way.
When a copper pipe length, A, has to be fixed to a castiron pipe length, P, or
to the flanged inlet to a valve casing or other connection, an annular rib, R, may
be formed on the flange, G, so that the copper flange, B, may be nipped between
it and the rib on the joint ring, D. Or the flange, G, may be made with a flush
or flat face for the outer flat part of the copper flange, B, to bear on..

page_text: My improved mode of jointing pipe lengths is applicable with pipes made of
such metals or alloys as have more or less of a flexible or malleable character, like
that possessed by copper. Instead of using complete rings (D, E) which have
to be placed on the pipe lengths before the ends are flanged out, the rings may
be made in halves with the meeting ends half-checked to each other; or each ring
may consist of two thicknesses each thickness being in halves and the four parts
being arranged so as to break joint. The Invention is also applicable when flanges
are brazed on the ends of the pipe lengths, the rings (D, E) made in balves or
parts, being applied so that their annular ribs (R) may bear on the flanges and
concentrate the binding pressure on the parts with which they come in contact.
The concentration of the binding pressure by making the bearing surfaces of the
ribs (R) narrow is an important feature of my Invention, and may be attained
by using separate narrow rings of steel or other hard metal or alloy instead of the
ribs (R). Or a similar result may be attained by inserting a narrow ring between
the flanges (B, C,) of the pipe lengths, in which case the binding rings (D, E) may
be made with or without the ribs (R).
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is :-
The making of pipe joints by binding together flanges on the ends of the pipe
lengths by rings made to compress the flanges by means of screw bolts substantially
as hereinbefore described.
EDMUND HUNT,
Applicant's Agent.