Improvements in and relating to Jointing Wrought Iron Pipes.
Year: 1894

page_text: Date of Application, 3rd Aug., 1891-Accepted, 8th Sept., 1894
Improvements in and relating to Jointing Wrought Iron Pipes.
We, JOHN DAKERS, of the Woodlands, Blaina, Monmouthshire, Mining
Engineer, and JOHN SWINBURNE, of Holly Cottage, Blaina, aforesaid, Mechanical
Engineer, do hereby declare the nature of this invention and in what mauner
the same is to be performed, to be particularly described and ascertained in and
by the following statement :-
This invention has reference to jointing wrought iron pipes for water, steam, gas
or compressed air.
According to this invention a flange is welded on to each end of the pipe. Iu
the faces of the flanges are cut or otherwise formed V-shaped grooves so that a
diamond-shaped annular channel is presented when the flanges of two pipes abut
on one another. Behind each flange and at a suitable distance therefrom, a collar,
smaller in diameter than the flanges, is welded on to the pipe.
A ring of india-rubber is laid in the diamond-shaped channel aforesaid, and
divided and recessed coupling boxes of cast iron, steel or other suitable metal are
placed over the pipe ends and are connected and screwed up by suitable bolts.
In the accompanying sheet of illustrative drawings, Fig. 1 represents in elevation,
and Fig. 2 in section, the improvements in and relating to jointing wrought iron
pipes which constitute this invention.
Behind the flanges a¹
smaller in diameter than
Over the pipe ends is
The coupling
Welded on to the ends of the pipes a are flanges al having V-shaped grooves
sunk in the abutting faces. These grooves present a diamond-shaped annular
In the said channel is laid a
channel extending round in the flanges a'.
correspondingly shaped ring 6 of india-rubber or the like.
and situated at a suitable distance therefrom are collars
the flanges a'. These collars are also welded on the pipes.
placed a coupling box d of cast iron, steel or other suitable metal.
box d which is divided horizontally into two parts is recessed to engage with the
flanges a¹ and collar c as shown. By means of bolts e the two parts of the
coupling box are connected and screwed up to make the joint of the pipes
tight. As shown at Fig. 2, the coupling box is recessed to engage with the
flanges a' and is shaped at the inner ends to engage with the collar c.
In carrying our invention into practice, a Hange a¹ and collar care first welded
ou one end of the pipe. Over the other end of the pipe, which end is as yet
unprovided with a flange and collar, are slid two separate and similar parts of the
coupling boxes end to end, that is to say, with their flanged faces turned away
from one another.
A flange and collar are then formed on the pipe end at which the parts of
the coupling boxes have been slid on as aforesaid. The respective parts of the
coupling boxes are then moved to their proper places for connection to
corresponding parts similarly placed on the abutting pipes.
To provide for maintaining the joint tight in event of fracture of or injury to
These
the coupling box other coupling boxes are provided for use in such cases.
differ from those above described in that they are divided both horizontally and
vertically, as shown at Fig. 3, so as to be capable of being readily applied to and
made to embrace the pipes at the joints.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that
what we claim is :-
Tainting wrought iron nines by providing thereon flanges such as a', and collars

page_text: Buch as c, of smaller diameter than the flanges, which, as well as the collars, are
arranged to engage with recessed and flanged coupling boxes such as d (made
either in two or four pieces) and secured together across the pipe joint by suitable
screw bolts; the joint being rendered tighter by the provision in the flanges of a
diamond-shaped ring such as 6 of india-rubber or like material, substantially as
herein before described with reference to the accompanying drawing.
Dated this 1st day of August 1894.
5
NICHOLAS WATTS,
Chartered Patent Agent, Bristol.