IMPROVEMENTS IN THE MANUFACTURE OF CISTERN PUMPS AND OTHER PUMPS
Year: 1884

page_text: COMPLETE SPECIFICATION.
WILLIAM DEVOLL 3, Boldmere Road Erdington near Birmingham in the
County of Warwick, Engineer and OLIVER HOWL Engineer Tipton in the
County of Stafford we do hereby declare the nature of our Invention for
IMPROVEMENTS IN THE MANUFACTURE OF CISTERN PUMPS AND OTHER PUMPS
and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement :—
The object of this Invention is to produce or make a pump for cisterns or for
other purposes which is stronger, and also much lighter in weight, than those at
present in use and is also unbreakeable.
The utility of the above Invention especially for purposes of export is very great,
as the cistern pumps and other pumps when made of cast iron, are often broken in
transit. The weight also of pumps made in accordance with our Specification and
Drawings, being about one third less pump, for pump, than those in use made of
common cast iron, a great saving in freight or carriage is thereby effected. For the
above purpose we make or form the pump barrel A out of wrought iron tube
screwed in the ordinary manner at each end.
We then form a valve chamber or tail piece of malleable or wrought iron and of
the shape or configuration shewn at B, on the Drawings, and having a valve which
opens inwards. The top or face of this chamber forming the seat for the valve.
We then screw the socket part C of this chamber to receive the end of the tube
forming the barrel, which is then screwed into it. The tail end of the suction
chamber is screwed out to receive the ordinary suction pipe, and a flange D is also
formed on, for the purpose of fixing the pump.
The spout is also of tough malleable or wrought iron and is attached to the tube
or barrel by four screws as shewn. For the top of the pump we form a ring E in
malleable or wrought iron, having an arm or fulcrum F to receive the handle which
is also formed or made of malleable or wrought iron. The top or ring E is screwed
internally so as to screw on to and fit the top of the barrel.
A groove G is turned in the centre of the screwed part at the top of the barrel-
as shewn on the Drawings-to receive the point of the set pin H, the said groove is
also made a little wider than the diameter of the pin. The advantage of this
arrangement is, that when the ring E is screwed on to the top of the barrel, it may
be screwed round so as to bring the handle to the right or to the left of the spout,
or at the back, as desired, and being screwed on will be firm in any position.

page_text: The set pin H is for the purpose of locking it when in position, the point of
which is screwed up into the groove and does not therefore injure the threads on
the barrel,
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 :-
1st. The use of a wrought iron tube for the purpose of forming the barrel of
a pump or pumps as.above described and as shewn on the accompanying Drawings,
which is lighter, and stronger than those in use made of cast iron, and also
unbreakeable, substantially as described..
2nd. An improved adjustable top ring screwed internally and fitted to the tube
as above described and as shewn on the accompanying Drawings substantially as
described.