Improvements in Pistonless Pumps Worked by Fluid Pressure.
Year: 1891

page_text: Date of Application, 11th Dec., 1891
Complete Specification Left, 12th Sept., 1892-Accepted, 22nd Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Pistonless Pumps Worked by Fluid Pressure.
I, JOHN WILD, M.I. Mech. E. of Falcor. Iron Works, Oldham, in the County
of Lancaster, do hereby declare the nature of this invention to be as follows:-
My invention relates to pistonless pumps and the chief object of my invention is
to economise the steam or other fluid employed in pumping.
In constructing a steam pump according to my invention I employ two or more
pump barrels and in a steam chest at the top of the barrels I have a weighted
double beat steam valve for each barrel; each steam admission valve face is
preferably of slightly larger area than the other valve face on its stem and the
weights or floats of the valves are contained in the pump barrels and balance each
other. In each valve stem is a box or opening to receive one end of a pivoted
lever which is arranged so that at starting either valve can be opened by turning
the pivot to admit steam into one of the barrels while subsequently when the pump
is at work the valves and the lever can move freely without turning the pivot.
In operation when steam is admitted into one of the pump barrels and then shut
off the steam will gradually condense and so allow a little liquid to enter the barrel
meanwhile steam has been entering the other barrel and on turning the pivot and
reversing the valves steam is again admitted to the first barrel while that in the
second barrel condenses and allows liquid to enter; this action of alternately
admitting and shutting off steam by turning the pivot and reversing the valves is
continued until both barrels are nearly full of liquid when on again admitting steam
to the first barrel some of the liquid therein will be expelled from the barrel
through the discharge valve and pipe and on the reversal of the valves liquid
will also be discharged from the second barrel while the first barrel will fill with
liquid sufficiently to meet the float weight in it thereby destroying the equilibrium
between the two admission valves and automatically effecting their reversal, which
action continues until steam is shut off.
The function of the smaller valve on each valve stem is to make each double
beat valve an equilibrium or nearly an equilibrium valve, and the steam passing
through each smaller valve is conducted through a passage into one of the pump
barrels.
In order to make the pump work quickly and more effectively I propose to take
an injection pipe from the discharge pipe into each pump barrel near the top,
an adjustable back pressure valve being fitted in each injection pipe to regulate the
flow of liquid from the latter into the pump barrels and also to prevent the escape
of steam from the barrels.
My improved pump can be worked by compressed air; to effect this I should
employ two pairs of valves for each pump barrel both pairs of valves being coupled
to one float so that when the air admission valve is opened then the second or
exhaust valve would be closed.
When one of the air admission valves is closed liquid fills the pump barrel
controlled by the said valve and the second or exhaust valve of this barrel being
open at this time the air in it escapes through such valve and at the same time the
liquid is expelled from the other pump barrel until the action is reversed as before
described.
Dated this 10th day of Doomben 1001
H. B. BARLOW,
Agent for Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Pistonless Pumps Worked by Fluid Pressure.
I, JOHN WILD, M.I. Mech. E. of Falcon Iron Works, Oldham, in the County
of Lancaster, 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 :-
My invention relates to pistonless pumps and the chief object of my invention
is to economise the steam or other fluid employed in pumping.
In constructing a steam pump according to my invention I employ two or more
pump barrels and in a steam chest at the top of the barrels I have a weighted
double beat steam valve for each barrel; each steam admission valve face is
preferably of slightly larger area than the other valve face on its stem and the
weights or floats of the valves are contained in the pump barrels and balance each
other. In each valve stem is a box or opening to receive one end of a pivoted
lever which is arranged so that at starting either valve can be opened by turning
the pivot to admit steam into one of the barrels while subsequently when the pump
is at work the valves and the lever can move freely without turning the pivot.
And in order that my invention may be fully understood and readily carried
into effect I will describe the accompanying two sheets of drawings reference being
had to the figures and letters marked thereon.
Fig. 1 is a front sectional elevation the upper portion being taken on the line A B
and the lower on the line C D, Fig. 2.
Fig. 2 is a side sectional elevation taken on the line M N Fig. 1 and
Fig. 3 is a plan taken on the line E G, Fig. 1.
Fig. 4 is a front sectional elevation of a modification of my invention.
Figs. 1, 2, and 3 show a pistonless pump constructed according to my improve-
ments and arranged to be worked by steam.
In these views,-a a designate two pump barrels, 6 the liquid inlet passage con-
trolled by the two non-return valves c, d is the discharge chamber controlled by
two non-return valves e e, and d' the discharge pipe, f is an air vessel of the usual
type in connection with the discharge chamber d and which I prefer to employ in
order to prevent hammering or jarring.
Above the pump barrels a is fixed the steam chest in which are placed the
double beat steam valves which control the admission of steam to the two
valves a; each lower steam admission valve face is preferably of slightly larger
area than the upper valve face on the same stem and the weights or floats j of the
valves are contained in the pump barrels a and balance each other. In each valve
stem is a box or opening to receive one end of a lever k which is fulcrumed on the
pivot in such a manner that at starting either pair of valves can be opened by
turning the pivot to admit steam into one of the barrels a, while subsequently
when the pump is at work the valves h and the lever k can move freely without
turning the pivot l.
In order to make the pump work quickly and more effectively I propose to take
an injection pipe or bye-pass m from the discharge pipe d' into each pump barrel a
near the top, an adjustable back pressure valve n being fitted in each injection
pipe m to regulate the flow of liquid from the latter into the pump barrels and also
to prevent the escape of steam from the barrels.
In operation when steam is admitted into one of the pump barrels a and then
shut off the steam will gradually condense (the process of condensation being
accelerated by the discharge of liquid through the bye-pass m) and as the steam
condenses a little liquid enters the barrel through its non-return valve c; meanwhile
steam has been entering the other barrel a and on turning the pivot land reversing
the valves steam is again admitted to the first barrel a, while that in the second
barrel condenses and allows liquid to enter through its non-return valve c; this

page_text: action of alternately admitting and shutting off steam by turning the pivot and
reversing the valves his continued until both barrels are nearly full of liquid when
on again admitting steam to the first barrel some of the liquid therein will be
expelled from the bariel through its discharge valve e and pipe d' and on the
reversal of the valves liquid will also be discharged from the second barrel,
while the first barrel will fill with liquid sufficiently to meet the float weight j
in it thereby destroying the equilibrium between the two pairs of admission
valves, and automatically effecting their reversal, which action continues until
steam is shut off.
The function of the upper and smaller valve h on each valve stem i is to make
each double beat valve h an equilibrium or nearly an equilibrium valve, and the
steam passing through each. smaller valve is conducted through a passage g¹ into one
of the pump barrels.
In the modification of my invention illustrated by Fig. 4 the improved pump is
shown constructed to be worked by compressed air and for forcing liquid supplied
to it by gravitation. To effect this I employ two pairs of valves h and h¹ on each
stem i for each pump barrel a, both pairs of valves h h being coupled to one float j
so that when the pair of air admission valves h are opened then the second pair or
exhaust valves h will be closed. In this arrangement g is an air chest to which
compressed air is supplied and g¹ is the passage by which air from the chest g flows
into the pump barrels a when their respective pairs of admission valves are open.
The air expelled from the pump barrels a by the inrush of the entering liquid
escapes through the exhaust valves h¹ and an exhaust passage o.
When one. pair of the air admission valves is closed liquid under pressure
enters and fills the pump barrel controlled by the said valves and the second pair
or exhaust valves of this barrel being open at this time the air in it escapes
through such valves and through the exhaust passage o and at the same time the
liquid is expelled from the other pump barrel until the action is reversed by liquid
acting on one of the floats ; as before described.
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 1
claim is :-
1. In a pistonless pump worked by fluid pressure the combination with the
equilibrium valves which control the admission of the steam or other fluid under
pressure to the pump barrels, of an arrangement of float weights whereby the
reversal of said valves is effected automatically as the pump barrels fill substan-
tially in the manner herein set forth.
2. The arrangement use and application, in connection with each pump barrel,
of an injection pipe or bye-pass such as m which is controlled by an adjustable
back pressure valve and forms a communication between the discharge chamber or
pipe and the pump barrel substantially as and for the purpose herein set forth.
3. The several combinations and arrangements of parts embodying my improve-
ments in pistonless pumps worked by fluid pressure substantially as herein described
and as illustrated by the accompanying drawings.
Dated this 10th day of September 1892.
H. B. BARLOW & GILLETT,
17, St. Ann's Square, Manchester, Agents for Applicants.