Improved Means for "Priming and Working Centrifugal and other Pumps.
Year: 1890

page_text: Date of Application, 17th Dec., 1890
Complete Specification Left, 17th Sept, 1891-Accepted, 17th, Oct., 1891
PROVISIONAL SPECIFICATION
"
Improved Means for "Priming and Working Centrifugal and other
Pumps.
We, JOSEPH ARMYTAGE WADE, of Hornsea, near Hull, in the East Riding of
the County of York, Merchant, and JOHN CHERRY, of Hornsea aforesaid,
Mechanical Engineer, do hereby declare the nature of this invention to be as
follows:-
:―
:
Our invention relates to improved means for priming and working centrifugal
and other rotary pumps, whereby liquid may be supplied thereto.for enabling the
pump to be started without the use of a. foot-valve, and air or other gas may be
withdrawn from the pump-casing for the purpose of effecting the freer discharge of
the liquid pumped, especially when the same is hot.
In applying our invention, by way of example, to a centrifugal pump, we mount
upon or in communication preferably with the top of the pump casing a reservoir or
feeding vessel; the passage leading therefrom to the interior of the casing being
provided with a stop-cock. Between this cock and the casing, two branch-pipes,
each fitted with a stop-cock, are connected; and at some point between these two
cocks there may be placed a conical nozzle of the kind commonly employed in
ejector-apparatus. One of the branch-pipes serves to admit a stream of liquid
(preferably cold) to the conical nozzle, whilst by the other pipe, the liquid, together
with the air or other gas educed from the pump-casing, escapes. The first branch-
pipe may, however, be dispensed with, and liquid may be supplied to the conical
nozzle from the reservoir or feeding vessel, eventually escaping through the
remaining branch-pipe, as previously described.
or other
By means of the reservoir or feeding vessel, in the case of centrifugal
rotary pumps, liquid is supplied to the pump-casing for the purpose of enabling the
revolving fan or blade wheel to create such a vacuum as will suffice to lift the liquid
in the suction-pipe.
The reservoir or feeding vessel may be dispensed with; the branch-pipes and
conical nozzle being.retained for the purpose of withdrawing confined air or gas.
..Dated this 17th day of December 1890.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Agent for the Applicants.
COMPLETE SPECIFICATION.
Improved Means for "Priming"" and Working Centrifugal and other
Pumps.
We, JOSEPH ARMYTAGE WADE, of Hornsea, near Hull, in the East Riding of
the County of York, Merchant, and JOHN CHERRY, of Hornsea aforesaid,
Mechanical Engineer, 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 :—
Our invention relates to improved means for 'priming' and working centrifugal
and other rotary pumps, whereby liquid may be supplied thereto for enabling the
pump to be started without the use of a foot-valve, and air or other gas may be
withdrawn from the pump-casing for the purpose of effecting the freer discharge of
the liquid pumped, especially when the same is hot.

page_text: In the accompanying drawings, Fig. I represents, in side elevation, means con-
structed in accordance with our invention for working and priming centrifugal and
other pumps Figs. 2 and 3 illustrating modified forms of construction.
In applying our invention, by way of example, to a centrifugal pump, we mount
upon, or in communication preferably with the top of the pump-casing, a reservoir
or feeding vessel A.; the passage leading therefrom to the interior of the casing
being provided with a stop-cock A¹. Between this cock and the casing, two
branch-pipes B and C, each fitted with a stop-cock B or C, are connected; and at
some point between these two cocks, there may be placed a conical nozzle of the
kind commonly employed in ejector-apparatus. Such a conical nozzle is shewn in
Fig. in dotted lines. The branch-pipe B serves to admit a stream of liquid
(preferably cold) to the conical nozzle; whilst, by the pipe C, the liquid, together
with the air or other gas educed from the pump-casing, escapes.
The branch-pipe B may, however, be dispensed with, and liquid may be supplied
to the conical nozzle from the reservoir or feeding vessel A; the same eventually
escaping through the branch-pipe C, as previously described. This construction is
shewn in Fig. 2; the conical nozzle of Fig. 1 being replaced by a curved taper
nozzle, as indicated in dotted lines.
By means of the reservoir or feeding vessel A, when the apparatus is used with
centrifugal or other rotary pumps, liquid is supplied to the pump-casing for the
purpose of enabling the revolving fan or blade-wheel to create such a vacuum as
will suffice to lift the liquid in the suction-pipe.
According to the method of construction illustrated in Fig. 3, the reservoir or
feeding vessel A is dispensed with; the branch-pipes B and C, with their stop-
cocks B and C, and the conical nozzle being used for the purpose of withdrawing
confined air or gas.
Having now particularly described and ascertained the nature of this invention
and in what manner-the-same-is-to-be-performed, we claim :—
1. The improved means for priming and working-centrifugal and other pumps
substantially as described with reference-to-Fig. 1-of-the accompanying drawings
the same comprising a reservoir or feeding vessel A and stop-cock A, a branch-
pipe B-and stop-cock B, and a branch-pipe C and stop-cock C
2. The modified means for priming and working centrifugal and other pumps,
substantially as described with special reference to Fig. 2-of-the-accompanying
drawings; the same comprising a reservoir or feeding vessel A. and stop-cock A', a
branch-pipe C and stop-cock C, and a curved taper nozzle leading from the
vessel A to the pipe C.
3. The modified means for priming and working centrifugal and other pumps,
substantially as described with special reference to Fig. 3 of the accompanying
drawings; the same comprising a branch-pipe B and stop-cock B₁, and a branch-
pipe C and stop-cock C'.
Dated this 15th day of September 1891.
G. G. M. HARDINGHAM,
191, Fleet Street, London, E.C., Chartered Patent Agent.