Improvements in or relating to Beer Engines.
Year: 1898

page_text: Date of Application, 9th Sept., 1898
Complete Specification Left, 9th June, 1899-Accepted, 2nd Sept., 1899
Improvements in or relating to Beer Engines.
We, CHADWICK BARDSLEY and JAMES BARDSLEY, both of 39, Union Street,
Oldham, Bar Fitters, do hereby declare the nature of our said invention to be as
follows:
Our said invention relates to beer engines with which, as at present made
the liquor is liable to drip at the taps or nozzle due to the displacement of beer
by the return stroke of the piston rod.
To prevent such spilling we cause the piston rod to pass through stuffing boxes
at both ends of the engine cylinder, and thus equalise the capacity of the cylinder
on both sides the piston in displacing or lifting the liquor.
The bottom part of piston rod is hollow and its lower end takes into a thimble,
pocket or cap fitted on to the engine cylinder and long enough to allow of the
stroke of the piston rod, and in the lower end of said tubular piston rod we provide
a small valve, whereby any air in the pocket may escape, and in case of any
leakage of the liquor into such pocket, it may be pumped out by the action of
the piston and the said valve. The liquor thus raised escapes on the upper side
of the piston.
In lieu of a stuffing box, we may provide cup leathers. The "pull" handle
of the engine is connected to, and operates the piston rod in the ordinary
manner.
Dated this 8th day of September 1898.
CHADWICK BARDSLEY,
JAMES BARDSLEY,
By John G. Wilson & Co.,
Agents.
Improvements in or relating to Beer Engines.
We, CHADWICK BARDSLEY and JAMES BARDSLEY, both of 39, Union Street,
Oldham, Bar Fitters, 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 said invention relates to beer engines with which as at present made,
the liquor is liable to drip at the taps or nozzle due to the displacement of beer
by the return stroke of the piston rod. To prevent such spilling we cause the
piston rod to pass through stuffing boxes at both ends of the engine cylinder,
and thus equalise the capacity of the cylinder on both sides the piston in dis-
placing or lifting the liquor. The bottom part of piston rod is hollow and its
lower end takes into a thimble, pocket or cap fitted on to the engine cylinder and
long enough to allow of the stroke of the piston rod, and in the lower end of
said tubular piston rod we provide a small valve, whereby any air in the pocket
may escape and in case of any leakage of the liquor into such pocket, it may be
pumped out by the action of the piston and the said valve.
D
077

page_text: And in order that our said invention may be more readily understood and
carried into practical effect we have hereunto annexed a sheet of drawings upon
which-
Fig. 1 is a side exterior elevation of our improved beer engine, Fig. 2 is a
vertical sectional elevation of the same, and Fig. 3 a general view of the engine
and taps complete.
(A) designates the engine cylinder of the ordinary kind, or, by preference
made of stoneware in accordance with Letters Patent No. 21105/91 with end
caps (A). (B) is the piston, and (C) the usual piston rod working through
stuffing box (C) and operated by the usual pull-over handles.
To the underside of the piston (B) which carries the clack valve (D) we apply
an extension (E) of the piston rod (C) long enough to pass through the stuffing
box (F) when the piston is at its highest point. (G) is the inlet from the barrel,
controlled by non-return valve in union (H), and (I) the delivery outlet to the
taps.
The action is as follows:-In the absence of the extra length of piston rod (E)
the cubical capacity of the cylinder when the piston is at its lowest point would
be less than when such piston is at its highest point to an extent equal to the
area of the piston rod (C), hence the downstroke of the piston under existing con-
ditions, of necessity displaces an amount of liquor out of the cylinder equal to
the said area of piston rod. By applying the extension (E), however, to the
underside of the piston, and passing it through the lower end of the cylinder, the
capacity of the cylinder with the piston at its highest or lowermost point is
always equal, and no displacement of liquor can take place.
To prevent waste of liquor which may leak through the lower end of the
cylinder, we provide the thimble or casing (J) and use a hollow piston rod, and
in the bottom end of such rod we provide a small valve (K). When therefore any
liquor gets into the thimble the rod and valve immediately pump it up, and with
the hollow piston rod open at the top return the liquor into the cylinder, thus
preventing waste, as well as preventing contamination of the liquor by contact
with outside air, etc.
In lieu of the stuffing boxes (C) and (F) we may provide cup leathers, and we
may, if required, use a solid piston rod (E) and dispense with the thimble (J).
The stuffing boxes are formed in one piece with the metal end caps (A*) to
which the inlet and outlet connections are made as shewn.
Having thus 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:-
-
1: In beer engines, a cylinder with stuffing boxes at both ends, a piston and
piston rod, a tubular extension of said rod beyond the piston, a valve in said
extension, a thimble into which said extension may take, and all mounted and
operating substantially as and for the purposes set forth.
2:-In beer engines, a cylinder with stuffing boxes at both ends, inlet and out-
let valve connections, and a piston and piston rod, and extension of said rod
beyond the piston, substantially as and for the purposes set forth.
3: In beer engines, the arrangement and combination of parts substantially
as and for the purposes herein set forth and illustrated on the accompanying
drawings.
Dated this 8th dox of June 1899
CHADWICK BARDSLEY,
JAMES BARDSLEY,
By John G. Wilson & Co.,
Agents.