Year: 1885

page_text: I CHARLES JULIUS BALL of 9 Bush Lane, Cannon Street, London, Engineer do
hereby declare the nature of this invention to be as follows:-
The object of this invention is to make the blades of centrifugal pumps of
crescent or curved form provided with wood, india rubber or its equivalent at and
near the working edges for closely fitting the inner periphery of a cylinder casing
and also side cheeks fitted within the casing and capable of being adjusted or set
to prevent escape of liquid pass the said edges.
Any number of these blades can be fitted on the boss of a shaft set horizontally
and portions of the blades are hollowed out particularly so near the shoulders for
the free entry of liquid through and from a central opening of the main casing
within which the blades work. The bosses of the blades are arranged near the end
of the driving shaft which passes to the outside of the casing and supported partly
by the casing and by bearings between which the gear is fitted for driving the
suction blades by any prime mover.
A portion of the casing can be fitted with sliding or swing doors, or one half side
of the casing can be swung eccentrically to allow of the interior being examined
for repairs or other necessary operation.
This pump is specially adapted for dredging operations but is applicable for
raising sewage sludge, semi-liquids from wash mills and the like and also for
irrigation purposes.
H. GARDNER,
166, Fleet Street, London,
Agent for the said C. J. Ball,

page_text: COMPLETE SPECIFICATION.
Improved Construction or Arrangement of Centrifugal Pump.
I CHARLES JULIUS BALL of 9 Bush Lane, Cannon Street, London, Engineer, do
hereby declare the nature of my said invention 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 make the blades of centrifugal pumps of
crescent or curved form provided. with wood, india rubber or its equivalent at and
near the working edges for closely fitting the inner periphery of a cylinder casing
and also side cheeks fitted within the casing and capable of being adjusted or set
to prevent escape of liquid past the said edges.
.
.
Any number of these blades can be fitted on the boss of a shaft set horizontally
and portions of the blades are hollowed out particularly so near the shoulders for
the free entry of liquid through and from a central opening of the main casing
within which the blades work. The bosses of the blades are arranged near the end
of the driving shaft which passes to the outside of the casing and supported
partly by the casing and by bearings between which the gear is fitted for driving
the suction blades by any prime mover.
A portion of the casing can be fitted with sliding or swing doors or one half side
of the casing can be swung eccentrically to allow of the interior being examined
for repairs or other necessary operations.
This pump is specially adapted for dredging operations but is applicable for
raising sewage sludge, semi-liquids from wash mills and the like and also for
irrigation purposes.
By my invention in centrifugal pumps hereinafter described I obtain a reduction
of cost on account of greater simplicity of construction, the possibility of passing
very large stones for the size of the pump, and extreme facility for opening the
pump and obtaining access to its interior in cases of obstructions or for renewals..
The pump (of which Figures 1, 2 and 4 are elevations and Figure 3 a plan) is
formed in two pieces, the one A is of an open dish shape being one side or cover of
the pump with the rim or cylindrical portion B in one casting, which also forms a
long bearing for the shaft C of the pump. The other piece D forms the other half
of the pump and forms itself into a come terminated by a flange with swivel bolts
and which joins on to the suction pipes E, E. I sometimes prefer to make the
sides of the pump in wrought iron sheets the rim being in thick cast iron, the
wrought iron being less liable to be cracked by big stones.
The inner sides of both A and D are completely covered by wearing plates F, F
of steel or chilled iron, cut or cast to the shape required.
The fan has a most peculiar form, having generally only three arms G, G, G,
which, as shown at Figure 1, start from the centre or boss of fan H and come out
widening until they nearly fill the space between the two cheeks or rubbing
wearing plates I, I. The blades G, G, are covered with india rubber flaps J, J,
which are a little wider than the fan blades and completely fill the space between
the said wearing plates, the flaps are held down by wrought iron plates or strips
held down by nuts and countersunk headed bolts.

page_text: The pipe K coming from the cover of pump is passed through a support L so
that when the cover is unfastened it can slide back leaving the whole of fan
exposed.
The arrangement by which all the supporting of the fan and shaft is done at the
rear whereas in ordinary pumps there is a bearing in front where the material
arrives, allows very big stones to pass freely in the annular passage M.
The cover D can be held to the pump A by means of screws and by screwing in
three sixths of a screw as in some breech loading guns, the other three, sixths being
cut out or simply by having three or more helical inclined planes cast on the cover
and slipping under three or more projections on the other casting so as to jam
under as soon as cover revolves slightly, or the cover may be secured in any other
suitable manner.
Figures 5 and 6 are plan and elevation respectively of the fan.
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 improvements in rotary centrifugal pumps hereinbefore described and sub-
stantially as shown on the annexed drawings.