An Improved Method of Joining Wrought Iron Pipes such as are Used for Gas, Water, and Steam.
Year: 1893

page_text: Date of Application, 17th Nov., 1893
Complete Specification Left, 16th Aug., 1894-Accepted, 22nd Sept., 1894
PROVISIONAL SPECIFICATION.
An Improved Method of Joining Wrought Iron Pipes such as are
Used for Gas, Water, and Steam.
I, JAMES HODGSON Joiner 11 Warwick Road, Sutton Surrey, do hereby
declare the nature of this invention to be as follows:-
In place of the internal screwing of the fittings as usually made, to manufacture
them to pass just easily on the pipe, and to cut a screw thread on each end of the
fitting externally, and internally to provide a bevelled seat at each end.
For each end a cap is provided which also passes easily on pipe and is screwed
internally to fit the external thread on fitting.
The pipe has a small annular groove cut round it by a suitable tool which
gauges it from the end, and a ring of suitable metal cut in direction of its radius,
to allow it to be sprung over pipe, is provided and fits into groove on pipe.
A rubber ring is placed in fitting and when the caps are screwed up they press
on metal ring which by the bevelled seat is pressed tight into groove on pipe and
also presses pipe tightly on rubber ring, thus forming a perfectly sound and strong
joint.
In the drawing A, A, are two pipes to be joined, B, the collar fitting passing
easily on pipes, C, C, caps to screw on collar, D the rubber ring between pipes,
E, E, metal ring lying in groove round pipe and resting on bevelled seat in end
of collar fitting.
Dated this 15th day of November 1893.
JAMES HODGSON.
COMPLETE SPECIFICATION.
An Improved Method of Joining Wrought Iron Pipes such as are
Used for Gas, Water, and Steam.
I, JAMES HODGSON Warwick Road Sutton, Surrey, 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 place of the internal screwing of the fittings, to manufacture them so that
they pass just easily on pipes, with a screw thread cut externally on each end,
and internally with a bevelled seat to each end. For each end a cap is provided,
which also passes easily over pipe and is sorewed internally to fit each end of
fitting.
The pipe has a small annular groove cut round it by a suitable tool which
gauges it from the end, and a ring of suitable metal is provided, with cut in
direction of radius to allow it to be sprung over pipe, and fits into groove on pipe.
A rubber ring is placed in fitting between pipes, and when caps are screwed
up they press on metal ring, which by the bevelled seat is pressed tight into
groove on pipe and also presses pipes tightly on rubber ring, thus forming a
perfectly sound and strong joint.
Referring to the annexed drawing, A, A, are the pipes to be joined, B, B, the
collars, c, c, the caps. D the rubber ring between pipes.
e, e, the split metal
rings encircling pipes in grooves F, F.
It will be seen that by screwing up the caps c, c, the split metal packing
rings e will tend to make a tight joint between the ends of the pipe A & the

page_text: rubber ring D by drawing the pipes together; the grooves F in the pipes tending
to keep the ends of same against the packing D, & so make a tight joint.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I
claim is :-
1. In pipe joints, in combination, a loose sleeve having bevelled & screwed
ends, upon which ends screwed caps fit, being bored to receive the ends of the
pipes to be connected, two or more split metal rings engaging in grooves formed
in said pipes; a packing ring formed of indiarubber or such suitable material
& interposed or placed at the junction of the ends of the pipes aforesaid which are
preferably bevelled, substantially as herein described and illustrated.
Dated this 16th day of August 1894.
E. EATON,
Agent for Applicant.