Improvements in or relating to Pipe Joints.
Year: 1893

page_text: Date of Application, 5th Oct., 1893
Complete Specification Left, 5th July, 1804-Accepted, 11th Aug.,
1894
.PROVISIONAL SPECIFICATION.
Improvements in or relating to Pipe Joints.
I, DOUGLAS ROLLAND DRUMMOND, of High Road, Leytonstone, in the County
of Essex, Builder, do hereby declare the nature of this invention to be as
follows:-
This invention relates to joints for pipes and the like of soft metal or material
and may be carried out in the following manner :-
Upon the end of the soft metal pipe i place a thimble or sleeve provided with a
flange or collar and I turn the soft metal pipe down over this flange so that the
soft metal pipe has a flange as well as the thimble. Upon the thimble I place an
internally screwed coupling cap and by placing a leather or other washer or
packing ring and screwing the coupling cap on to a projecting externally screwed
tube I can make a strong tight joint and one which is usually detachable and
thus avoid the necessity for the wiped joint usually used for plumbers' work of this
description.
The externally screwed tube upon which I screw the cap may be attached to
another piece of soft pipe or it may be connected to a cistern, a tap or the like, to
which the soft pipe is to be connected.
Amongst others, the following advantages are possessed by this joint, that the
ordinary wiped or other soldered joint which is tedious to make is entirely dis-
pensed with and that this joint can be made even while the water is to some
extent at all events, on, whereas the presence of water will ruin or absolutely
prevent the formation of a wiped joint.
Dated this 30th day of October 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Pipe Joints.
I, DOUGLAS ROLLAND DRUMMOND, of High Road, Leytonstone, in the County
of Essex, Builder, 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 relates to joints for pipes and the like of soft metal or material
and may be carried out in the following manner :-
Upon the end of the soft metal pipe I place a thimble or sleeve provided with a
flange or collar and I turn the soft metal pipe down over this flange so that the
soft metal pipe has a flange as well as the thimble. Upon the thimble I place an
internally screwed coupling cap and by placing a leather or other washer or
packing ring and screwing the coupling cap on to a projecting externally screwed
tube I can make a strong tight joint and one which is easily detachable and thus
avoid the necessity for the wiped joint, usually used for plumbers' work of this
description.
The externally screwed tube upon which I screw the cap may be attached to
another piece of soft pipe or it may be connected to a cistern, a tap, or the like, to
which the soft pipe is to be connected.
Amongst others, the following advantages are possessed by this joint, that the

page_text: •
ordinary wiped or other soldered joint which is tedious to make is entirely dis-
pensed with and that this joint can be made even while the water is (to some
extent at all events) on, whereas the presence of water will ruin or absolutely
prevent the formation of a wiped joint.
In the accompanying drawings
Figure 1 is an elevation and
Figure 2 a longitudinal section of one form of the joint constructed according to
this invention, and
Figure 3 is a longitudinal section of another form of the joint.
Like letters represent like parts throughout the drawings.
The joint shown in Figures 1 and 2 is designed for connecting together two
pipes A A¹ of soft metal for which purpose place on each of them a thimble
or sleeve B or B' the former provided with a flange or collar B' and the latter
with an external screw thread B. I turn the ends of A A' outwards over the
inner ends of B B' respectively so that the soft metal pipes have each a flange A³.
Upon the thimble B I place a coupling cap C provided with an inwardly projecting
flange C for engaging with the flange or collar B' and with an internal screw-
thread C' for engaging with the threaded portion B' of B'.
By screwing the cap on to B' the adjacent faces of the flanges A³ are forced
sufficiently tightly together to form a sound joint without any extraneous means
though if desired I may provide a leather or other washer or packing between the
flanges A³, or I may coat the adjacent faces of A' with paint or equivalent
material.
In the joint shown in Figure 3 I provide a screwed nipple D two thimbles or
sleeves B, and two internally threaded coupling caps Cone screwing upon each end of
the nipple D. By this means the flanges A³ of the soft metal pipes A A' are forced
tightly against the ends of the nipple D so as to form tight joints. In Figure 3 the
nipple D is represented as of larger internal diameter than the pipes A A' but if
desired it may be made of the same internal diameter as A A¹.
It will be readily understood that when, in accordance with this invention I
require to connect a soft metal pipe with a valve as for example in a pipe leading
from a water main to a house, the flanges A2 are pressed against the two screw-threaded
ends of the valve in precisely the same manner as that shown in Figure 3. To connect
say the pipe A with a flushing cistern or waste preventer the thimble or sleeve B¹
is soldered or otherwise secured in the flushing cistern in the usual manner and the
flanged end of A is forced against the end of B' the tightness of the joint if desired
being ensured by a coating of paint or in any other desired manner though such
special means are not absolutely necessary as the softness of the flange A admits
of its conforming at every part of its outer face with the contiguous face of the
thimble B¹.
Having now particularly described the nature of the said invention and in what
manner the same is to be performed, I declare that what I claim is :-
1. In a joint for a soft metal pipe the combination with a flange on the pipe of a
flanged sleeve or thimble such as B B' threaded coupling cap and a threaded sleeve
nipple or fitting such as B' or D against which latter the pipe flange bears either
directly or through a leather or equivalent washer substantially as described and
illustrated in the accompanying drawings.
2. In a joint for two soft metal pipes the combination with flanges on the pipes
of two sleeves or thimbles such as B'B' and B' B' and a coupling cap the two pipe
flanges bearing against each other either directly or through a leather or equivalent
washer interposed between them substantially as described and illustrated in.
Figures 1 and 2 of the accompanying drawings.
3. In a joint for soft metal pipes the combination with flanges on the pipes of.
two sleeves two coupling caps and a nipple against the ends of which the pipe..
flanges bear either directly or through leather or equivalent washers substantially
as described and illustrated in Figure 3 of the accompanying drawings.

page_text: 4. The complete joint for soft pipes substantially as described and illustrated in
Figures 1 and 2 of the accompanying drawings.
5. The complete joint for soft pipes substantially as described and illustrated in
Figure 3 of the accompanying drawings.
Dated this 5th day of July 1894.
D. R. DRUMMOND.
W. P. Thompson & Boult,
Agents for the Applicant.