Improvements in Union Couplings or Joints for Soft Metal and other- Flexible Pipes.
Year: 1895

page_text: Date of Application, 23rd Mar., 1895
Complete Specification Left, 17th Dec., 1895-Accepted, 15th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Union Couplings or Joints for Soft Metal and other-
Flexible Pipes.
I WILLIAM JAMES TAYLOR GASCOIGNE, Engineer, of 70 Alcombe Road,
Northampton in the County of Northampton, do hereby declare the nature of this
invention to be as follows:-
This invention for improvements in union couplings or joints for soft metal and
other flexible pipes has for its object to enable a coupling or joint to be readily
made with lead rubber and similar pipes without the aid of solder packing or the
like and consists essentially of a hollow externally screwed nipple having a
spherical projection on its inner end and an internally screwed cap adapted to screw
on the nipple and having an internal cone surrounding the said spherical projection
when the cap is screwed on the nipple. The end of the pipe to be joined is coned
out and gripped between the spherical projection and the internal cone.
When joining the adjacent ends of two pipes together the screwed nipple is made
double ended and the pipes are joined to these ends by two caps.
Dated this 23rd day of March 1895.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.
Improvements in Union Couplings or Joints for Soft Metal and other
Flexible Pipes.
I WILLIAM JAMES TAYLOR GASCOIGNE Engineer, of 70 Alcombe Road,
Northampton in the County of Northampton, 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 :--
This invention for improvements in union couplings or joints for soft metal and
other flexible pipes has for its object to enable a coupling or joint to be readily made
with lead rubber and similar pipes without the aid of solder packing or the like.
and consists essentially of a hollow externally screwed nipple having a spherical
projection on its inner end and an internally screwed cap adapted to screw on the
nipple and having an internal cone surrounding the said spherical projection when
the cap is screwed on the nipple. The end of the pipe to be joined is coned out
and gripped between the spherical projection and the internal cone.
When joining the adjacent ends of two pipes together the screwed nipple is made.
double ended and the pipes are joined to these ends by two caps.
In the accompanying sheet of illustrative drawings:-Fig. 1 is an elevation of a.
double union coupling constructed according to this invention and Fig. 2 is a section
of the same.
The double-ended externally screwed nipple a has a spherical projection bat
each end. The internally screwed caps c are adapted to screw on the nipple a and
have conical bores d at their outer ends. In connecting the union to a soft metal

page_text: or flexible pipe the cap c is placed on the pipe, the end of the pipe is forced over
the spherical projection 6 and the cap is screwed on the nipple, compressing the soft
metal or flexible material between the bore d and projection b. As shown at the
left of the illustration grooves e may be cut in the projections b so that a series of
depressions and ridges are formed to increase the grip on the pipe. Instead of
being spherical the projections may be conical or tapered.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1. A coupling for a soft metal or flexible pipe consisting of a screwed nipple
having a tapered projecting end and a cap having a tapered bore and adapted to
screw on the nipple.
2. The improvements in union couplings or joints for soft. metal and other
flexible pipes substantially as described with reference to the drawings.
Dated this 13th day of December 1895.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.