Improvements in Beer Engines, Paraffin Pumps, and like Appliances.
Year: 1896

page_text: Date of Application, 30th Oct., 1896
Complete Specification Left, 30th July, 1897-Accepted, 9th Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in Beer Engines, Paraffin Pumps, and like
Appliances.
We, SAMUEL GEORGE MASON, Manufacturer, and JAMES TONRY, Foreman, both of Dale
End, in the City of Birmingham, do hereby declare the nature of this invention to
be as follows:-
This Invention consists of improvements in beer engines, paraffin pumps, and the
like, my object being to provide simple and effective means for preventing leakage or
overflow due to the displacing action of the bucket or plunger rod, and also to.
prevent shocks or unsteady working from the accumulation of air or gas within the
pump.
In carrying our invention into effect we construct the pump barrel from brass or
other suitable metal in the ordinary manner, and provide the usual and ordinary
connections for the admission and discharge of the liquid. Upon one side of the
barrel and preferably within the same casting we form a displacing or relief passage
or chamber communicating with the barrel at each end. Instead of a bucket we.
employ a piston or plunger which we preferably fit with hydraulic cup shaped packing
of leather or other material.
We fit a non-return or back pressure valve at a convenient and suitable position
within the displacing or relief chamber to open on the down stroke or in-stroke of:
the plunger but to close on to its seating on the up-stroke or out-stroke of the
plunger.
On the up-stroke or out-stroke of the plunger within its barrel or cyclinder the
beer or other liquid flows into the lower or admission end of the cylinder under the
atmospheric or external pressure, whilst the liquid above the plunger is forced or
delivered through the outlet end. On the down-stroke or in-stroke of the plunger
the liquid on the under side of the same is displaced and forced through the
non-return valve and the displacing or relief chamber and into the upper end of the
cylinder. The area of the annular space between the plunger rod and the walls of
the cylinder being of course less than the total area of the cylinder, the whole of the
liquid displaced on the under side of the plunger cannot be delivered on to the
upper side, but the surplus quantity is retained within the displacing or relief
chamber and thus leakage or overflow is prevented.
To the lower end of the displacing or relief chamber or in some other convenient
position we attach a collapsible receptacle which by its inflation effectually prevents
shocks or unsteady working from the accuinulation of air or gas within the
pump.

page_text: COMPLETE SPECIFICATION.
Improvements in Beer Engines, Paraffin Pumps, and like
Appliances.
We, SAMUEL GEORGE MASON, Manufacturer and JAMES TONRY, Foreman, both of
Dale End, in the City of Birmingham, do hereby declare the nature of this invention
and in what manner the same is to be perforined, to be particularly described and
ascertained in and by the following statement:-
This Invention consists of improvements in beer engines, paraffin pumps, and the
like, our object being to provide simple and effective means for preventing leakage or
overflow due to the displacing action of the bucket or plunger rod, and also to
prevent shocks or unsteady working from the accumulation of air or gas within the
pump.
In the accompanying sheet of explanatory drawings to be hereinafter referred to:-
Figure 1 is a side elevation and
Figure 2 a sectional elevation of our improved beer engine.
In carrying our invention into effect we construct the pump barrel A from brass or
other suitable metal in the ordinary manner, and provide the usual and ordinary
connections as a and a¹ for the admission and discharge of the liquid. Upon one
side of the barrel and preferably within the same casting we form a displacing or
circulating passage or chamber B communicating with the barrel at each end.
Instead of a bucket we employ a piston or plunger C which we preferably fit with
hydraulic cup shaped packing of leather or other material.
We fit a non-return or back pressure valve D within the displacing or circulating
chamber B to open on the down stroke or in-stroke of the plunger but to close on to
its seating on the up-stroke or out-stroke of the plunger.
On the up-stroke or out-stroke of the plunger within its barrel or cylinder the
beer or other liquid flows through the suction valve E into the lower or admission
end of the cylinder under the atmospheric or external pressure whilst the liquid
above the plunger is forced or delivered through the outlet end. On the down
stroke or in-stroke of the plunger the liquid on the under side of the same is
displaced and forced through the non-return valve D and the displacing or circulating
chamber, into the upper end of the cylinder. The area of the annular space between
the plunger rod and the walls of the cylinder being, of course less than the total
area of the cylinder, the whole of the liquid displaced on the under side of the
plunger cannot be delivered on to the upper side, but the surplus quantity is retained
within the displacing or circulating chamber, which has a collapsible or flexible
diaphragm as F, and thus leakage or overflow is prevented.
The rubber or other collapsible or flexible diaphragm F is contained within a
casing F¹ open to the atmosphere through the aperture f. The movement of the
diaphragm under the action of the pump effectually prevents shocks or unsteady
working due to the accumulation of air or gas. Instead of a diaphragın such as
described we sometimes employ a collapsible bag or receptacle.
The suction valve E is secured on its seating when the plunger C is in its
innermost position, by the leather tipped projection c from the underside of the
plunger, thereby preventing the passage of any gases that may arise from the barrel
or receptacle from which the liquid is drawn.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is.-
1. The construction of a beer engine, paraffin pump, or like appliance, substantially
as and for the purposes described.

page_text: 2. In a beer engine, paraffin pump, or like appliance the combination with a piston
or bucket C and valves D and E of a circulating chamber B having a collapsible
receptacle or a flexible diaphragm as F, substantially as described and as
illustrated.