to be MEANS OF CONNECTING PIPES AND TUBES USABLE FOR VARIOUS PURPOSES
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I, THOMAS DURRANS, Architect, of Upper Baker Street, in the County of
Middlesex, % Day, Davies & Hunt, Patent Agents, 321, High Holborn, in the
County of Middlesex, do hereby declare the nature of my Invention for " IMPROVED
to be
MEANS OF CONNECTING PIPES AND TUBES USABLE FOR VARIOUS PURPOSES
as follows:
This Invention relates to the improved formation of the spigot or entering ends
and of the socket or receiving ends of pipes and tubes in such a manner as will
permit of them being turned and forcibly drawn together end wise in the act of
being jointed or connected and of their being thereby so securely brought into
true contact as will effect an air gas or liquid tight connection without the aid or
need of any intervening packing.
The Invention is especially applicable to iron or metallic pipes and tubes such as
are used as soil pipes, hot and cold water pipes, drain pipes, pneumatic tubing, gas
pipes and mains, smoke flues, ventilating pipes, steam pipes, hot air pipes, and
other analogous purposes.
The Invention consists in the formation of the meeting or connecting ends of the
pipes or tubes with corresponding reversely formed truly turned or formed inclined
faces which when brought into true contact in the act of connecting the pipe ends
form a perfectly tight joint, and also in the formation of the meeting or connecting
ends of such pipes or tubes when thus formed with corresponding screw or
equivalently forined surfaces which permit of the pipes in the act of being turned
and connected being drawn end wise towards each other so that such truly turned
or formed meeting faces shall be brought into true contact.
In an advantageous modification of carrying the Invention into practical effect,
the spigot end of the pipe or tube is formed with an external or male screw and
with an external flange a short distance from the end of the pipe, and the meeting
force of which (that is the face of the flange adjacent to the end of the pipe) is
made of an inclined tapering or conical formation, a cross section of which in the
direction of a plane passing through the axis of the pipe or tube may exhibit
either a straight or plane or a slightly convex or concave contour. The socket end
of the pipe or tube is made with an enlargement which is formed with an interior
or female screw, and this end of the pipe or tube is made as regards its meeting

page_text: face of a formation corresponding with but reversely to that of the meeting face of
the flange of the spigot end of the tube, so that in the act of joining connecting or
screwing the tubes together they are forcibly drawn endwise thus bringing the
said meeting faces into true contact so as to obtain the desired perfect connection
thereof without the aid or need of any intervening lead gaskin or other packing
which it is the present usual practice to use for the purpose of securing a tight
joint, and which it is moreover difficult to properly insert at the under part of the
pipes; and by dispensing with this necessity I economize labor in effecting the
desired object.
In this modification the meeting faces are accessible for examination, but in
other modifications the similarly formed meeting ends may be arranged within the
screwed socket ends; in both such modifications the interior of the tubes is left
continuous and free from any kind of obstruction to the flow of the contents.
The said inclined and correspondingly formed meeting faces may also be otherwise
formed in both ends of the pipes without there being any external flange or other
projecting part.
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.

page_text: I, THOMAS DURRANS, Architect, of Upper Baker Street, in the County of
Middlesex, % Day, Davies & Hunt, Patent Agents, 321, High Holborn, in the
County of Middlesex, do hereby declare the nature of my Invention for "IMPROVED
MEANS OF CONNECTING PIPES AND TUBES USABLE FOR VARIOUS PURPOSES," and
in what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
"3
This Invention relates to the improved formation of the spigot or entering ends
and of the socket or receiving ends of pipes and tubes in such a manner as will
permit of them being entered the one into the other and turned and forcibly drawn
together end wise in the act of being jointed or connected, and of their being
thereby so securely brought into true contact as will effect an air, gas, or liquid
tight connection without the need of any intervening packing.
The Invention is especially applicable to iron or metallic pipes and tubes such as
are used as soil pipes, hot and cold water pipes, water mains, drain pipes, pneumatic
tubing, hydraulic pipes, gas pipes or mains, smoke flues, ventilating pipes, steam
pipes, hot air pipes, and other analogous purposes, and to pipes of all sizes.
The Invention consists, essentially, in the formation of the meeting or connecting
ends of the pipes or tubes with corresponding reversely formed truly turned or
otherwise truly formed inclined or equivalently formed faces which when brought
into true contact in the act of connecting the pipe ends form a perfectly tight joint,
and also in the formation of the meeting or connecting ends of such pipes or tubes
when thus formed with corresponding screw or equivalently formed surfaces which
permit of the pipes in the act of being turned and connected being drawn and cause
them to be drawn endwise towards each other so that such truly turned or formed
meeting faces shall be brought into true contact.
Advantageous modifications of carrying the Invention into practical effect are
illustrated on the accompanying drawings; in which Fig; 1, represents a longi-
tudinal section of one modification; Figs; 2 represent similar views of another
modification, illustrating the corresponding reversely formed ends of adjacent pipes
in position to be connected-Fig; 3, represents a similar view of the same parts
connected and in operative position. Figs; 4 and 5, represent end views
respectively of the socket and spigot ends of the pipes or tubes illustrated in
Figs; 2. The same reference numerals indicate the same or like parts wherever
repeated.
In Fig; 1, the spigot end, 1, of the pipe or tube, 2, is represented as formed
with an external or male screw, 3, and with an external flange, 4, a convenient
distance from the end of the pipe, and the meeting face, 5, of which, (that is, the
face of the flange adjacent to the end of the pipe,) is made of an inclined tapering
or conical formation, a cross section of which in the direction of a plane passing
through the axis of the pipe or tube may exhibit either a straight or plain contour
as shown, or a slightly convex or concave contour. The socket end, 6, of the pipe
or tube, 2, and of the pipe or tube, 7, to be connected therewith, is made with an
enlargement, 8, which is formed with an internal or female screw, 9, and this end
of the pipe or tube is made, as regards its meeting face, 10, of a formation
corresponding with but reversely to that of the meeting face, 5, of the flange, 4, of

page_text: the spigot end of the tube, so that in the act of joining, connecting, or screwing
the tubes, 2, 7, together, they are forcibly drawn endwise, thus bringing the said
meeting faces; 5, 10; into true contact, so as to obtain the desired perfect connection
thereof without the need of any intervening packing such as in existing systems
of connecting pipes and tubes is necessary for the purpose of securing a tight joint,
and by dispensing with this necessity, I economise labor in effecting the desired
object; but I desire it should be understood that though the present improvements
make such a perfect joint as to dispense entirely with the need of any intervening
packing when laying the pipes in a right line, yet any suitable packing such as
collars or washers of lead may be used in connection with the herein described
improvements in such cases as where a much cheaper joint is required, and in such
cases the said meeting faces 5, 10, need be but roughly turned, or as where it is
required to lay the pipes not truly in a right line but in a more or less curved
direction, or to introduce junctions elbows and bends.
In this modification, and in the modification illustrated in Figs; 2, to 5, the
meeting faces of the adjacent pipes or tubes are accessible for examination, but in
other modifications the similarly formed meeting ends may be arranged within the
screwed socket end;, in such modifications the interior of the tubes is left continuous
and free from any kind of obstruction to the flow of the contents. The said
inclined and correspondingly formed meeting faces may also be formed in both
ends of the pipes without there being any external flange or other projecting part.
In the modification illustrated in Figs, 2, to, 5, the formation of the inclined
meeting edges of the pipes or tubes is substantially the same as that herein
described with reference to Fig; 1, but the means used for drawing the tubes
together, on the one being inserted into and turned within the other, consist of an
inclined plane or belically disposed segmental rim or rims, 11, preferably formed
within the socket end of the pipe, and recessed at two or more parts, 12, and of an
equal number of lugs, 13, preferably formed outside the spigot end of the pipe, and
which lugs, 13, are entered through the recesses, 12, into within the socket of the
pipe behind the rim or rims, 11, thereof, and upon being turned forcibly draw the
meeting faces, 5, 10, together. Either or both ends of pipes or tubes thus formed,
are preferably formed with any convenient number of external lugs, 14, affording
facility for the screwing up and unscrewing of the tubes by suitable appliances.
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 formation of the spigot or entering ends and of the socket or receiving ends
of pipes and tubes usable for various purposes, with corresponding reversely formed
truly turned or otherwise truly formed inclined or equivalently formed meeting
faces which can be brought into true contact in the act of connecting the pipe ends,
and with corresponding screw or equivalently formed surfaces which will cause the
pipe ends in the act of being connected to be drawn endwise towards each other,
in such a manner as that the said meeting faces will be thereby so securely brought
into true contact as will effect an air, gas or liquid-tight connection without the
need of any intervening packing, substantially as herein before described * with
reference to the accompanying drawings.
T
021
1
1 1007
DAY, DAVIES & HUNT,
321, High Holborn, London, W.C.,
Agents for the Applicant.