IMPROVEMENTS IN JOINING OR CONNECTING PIPES
Year: 1876

page_text: PROVISIONAL SPECIFICATION left by Henry Parsons at the Office of the
Commissioners of Patents on the 26th July 1876.
HENRY PARSONS, of Birmingham, in the County of Warwick, Gun Barrel Manu-
facturer. "IMPROVEMENTS IN JOINING OR CONNECTING PIPES."
My Invention consists in constructing, in the manner herein-after described, the
joints of pipes, whereby the said pipes are readily connected together and dis-
connected from one another, and a tight joint produced without the use of a packing
of lead.
In joining or connecting pipes according to my Invention I make flanges on the
ends of the pipes, the flange on one end of each pipe being hollow, and the flange
on the other end being solid, and of a size and shape proper to engage in the hollow
flange of another pipe, the solid flange of one pipe entering the hollow flange of the
other pipe by a sliding motion in a direction at right angles to the axis of the pipe.
The hollow and solid parts of the joint are constructed as follows:-The hollow
part consists of an undercut recess or seat made in the flange, the said recess or seat
being by preference inclined, or of a V figure, and extending about two-thirds
around the flange, the remaining part of the flange being cut away to form the
opening to the said recess or seat. The open top of the seat has an angular
shoulder. The solid part of the joint on the end of the other pipe consists of an
inclined lip, extending about two-thirds round the said pipe, the remaining part
of the end of the pipe being provided with a flange of a shape and size proper to
fit in the open top of the hollow part of the joint. The inner face of the flange of
the solid part of the joint is undercut so as to bear upon the angular shoulder
at the open top of the hollow part of the joint. In joining or connecting pipes
having the flanges thus constructed the lip of the solid of the joint on the end of
one pipe is introduced by a sliding motion into the undercut recess or sent in the
hollow part of the joint in the flange of the other pipe, and when the solid part of
the joint has been pushed home in the hollow part, the head of the said solid part
bears upon or seats itself against the angular shoulder in the open top of the hollow
part of the joint. The two parts of the joint are thus engaged together, and a close
fitting joint is formed and the ends of the two pipes are connected together, the
flanges of the connected pipes resembling externally the flanges of ordinary pipes;
to fix the engaged flanges securely together a cross pin or other fastening is passed
through the flanges. In order to detach the two pipes it is only necessary to
[Price 2d.1

page_text: remove the cross pin or fastening, and to lift the end of the pipe having the solid
joint part from the hollow flange of the adjoining pipe. I do not limit myself to
the sectional figure of the lip of the solid part of the joint, and the recess or seat
in the hollow part to receive it, as the said parts may be square in section, but I
prefer to make them of the figures herein-before described. The flanges or joint
parts of the pipes are made by preference by the casting process at the same time
as the said pipes are made. The hollow part of the joint may be made on both
ends of alternate pipes, and the solid part of the joint on both ends of the pipes
used between the former.
The joints of pipes made according to my Invention do not require the ordinary
lead packing, but may be made quite tight by the use where necessary of hemp or
white lead.