Improvements in Apparatus for Mechanical Organ Blowing.
Year: 1895

page_text: Date of Application, 3rd Aug.. '895
Complete Specification Left. 4th May, 1896-Accepted, 1st Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Mechanical Organ Blowing.
FREDERICK WILLIAM DURHAM Jun. Engineer Glembam Lodge Station Road
New Barnet Herts do hereby declare the nature of this invention to be as follows
:-
By this invention a gas engine working at small cost for consumption of gas
can be used in connection with a hydraulic engine combining the well known
advantages of the hydraulic system of organ blowing and without the heavy cost of
working a hydraulic engine supplied from the main. To accomplish this I provide
a gas engine of suitable power which I make to drive compression or force pumps,
which pumps take their suction from a tank or vessel, these pumps have their
delivery pipes connected to a hydraulic engine which works the feeders of the
bellows the exhaust from the hydraulic engine is led back into the tank before :
mentioned, a valve of suitable construction is placed in a passage which forms a
bye path between the delivery and exhaust of the hydraulic engine cylinder, and
such valve or valves are connected by suitable means with the bellows reservoir
the action being that when the bellows reservoir is full it automatically opens the
bye path so stopping the hydraulic piston and allowing the liquid used to pass
freely from the tank through the pumps and round through the bye path and
exhaust pipe back into the tank without pressure thus relieving the gas engine of:
practically all its work, but when this bye path is closed the liquid has to go at
whatever pressure it is loaded to through the hydraulic cylinder working its piston
and exhausting back to the tank. This arrangement avoids the use of a stop cock
or throttle valve in the supply pipe to the hydraulic cylinder which constantly give
trouble by sticking or requiring considerable force to move them it also prevents
the objectionable jerking at the end of each stroke.
I provide an air vessel on the engine supply pipe for cushioning each end of the
stroke, the valve in the bye path is also actuated by a draw stop or pedal.
By this invention I am enabled to avoid the effects of frost as by constantly using :
the same liquid supply pumping it from the tank through either the engine or
bye path as required and exhausting back to the tank I am enabled to use a mixture
such as glycerine and water or oil to lessen evaporation and prevent freezing.
My invention also dispenses with pulleys, belts, levers or any intermediate
mechanical connections the only connection between the gas and hydraulic engines
being the supply and exhaust pipes thus facilitating fitting and allowing the gas
engine to be placed at any distance away from the organ or building 30 that the
noise of it may not be heard in the building the hydraulic engine being practically
silent in action. When gas is not available I may use an oil engine or other motor
for driving the pumps.
Dated this 2nd day of Angust 1895.
.
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page_text: Improvements in Apparatus for Mechanical Organ Blowing.
FREDERICK WILLIAM DURHAM Junr. Engineer Glemham Lodge Station Road
New Barnet Herts, 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:―
By this invention a gas engine working at small cost for consumption of gas can
be used in connection with a hydraulic engine so combining the well known
advantages of the hydraulic system of organ blowing and without the heavy cost
of working a hydraulic engine from the main. To accomplish this I provide a gas
engine of suitable power which I make to drive compression or force pumps, which
pumps take their suction from a tank or vessel these pumps have their delivery
pipes connected to a hydraulic engine which works the feeders of the bellows the
exhaust from the hydraulic engine is led back into the tank before mentioned a
valve of suitable construction is placed in a passage which forms a bye path between
the delivery and exhaust of the hydraulic engine cylinder and such valve or valves
are connected by suitable means with the bellows reservoir the action being that
when the bellows reservoir is full it automatically opens the bye path so stopping
the hydraulic piston and allowing the liquid used to pass freely from the tank
through the pumps and round through the bye path and exhaust pipe back into the
tank without pressure thus relieving the gas engine of practically all its work, but
when this bye path is closed the liquid has to go at whatever pressure it is loaded
to through the hydraulic cylinder working its piston and exhausting back to the
tank.
This arrangement avoids the use of a stop cock or throttle valve in the supply pipe
to the hydraulic cylinder which constantly give trouble by sticking or requiring
considerable force to move them-it also prevents the objectionable jerking at the end
of each stroke.
I provide an air vessel on the engine supply pipe for cushioning each end of the
stroke, the valve in the bye path is also actuated by a draw stop or pedal. By this
invention I am enabled to avoid the effects of frost as by constantly using the same
liquid supply, pumping it from the tank through either the engine or bye path as
required and exhausting back to the tank I ain enabled to use a mixture such as
glycerine and water or oil to lessen evaporation and prevent freezing. My invention
also dispenses with pulleys belts, levers or any intermediate mechanical connections.
the only connection between the gas and hydraulic engines being the supply and
exhaust pipes thus facilitating fitting and allowing the gas engine to be placed at
any distance away from the organ or building so that the noise of it may not be
heard in the building, the hydraulic engine being practically silent in action.
Where gas is not available I may use an oil engine or other motor for driving the
pumps.
A reference to the drawings shows the arrangement generally. A is a wheel driven
from a gas engine or other suitable motor which wheel is on and drives a crank
shaft B which drives a pump C having its delivery valves D which are connected
by the pipes D' with the supply to the hydraulic cylinder H and which is drawn
from tank F by the suction pipe E the exhaust pipe G leading back to and emptying
itself into the tank F the supply pipe D' and exhaust pipe G are connected with each
other by the valve I which valve is operated by the lever J. This lever is worked
by the rise and fall of the bellows reservoir, or it may have one end resting on the
small auxiliary bellows K which form a pneumatic regulator for the valve I, these
bellows take their supply of wind through the pipe L from the wind trunk M of
the organ the supply of which is regulated by the reservoir of the organ bellows O,

page_text: so that when this reservoir rises high enough to move the weight N and operate the
slide P they allow the wind from the trunk M to pass into the bellows K and so
move them consequently the lever J opening the valve I and connecting the two
pipes D¹ and G allowing the pressure generated by the pump to pass freely from
the pipe D1 to the exhaust pipe G without going through the hydraulic engine and
so back to the tank F, directly the reservoir O falls the valve I is closed by the
weight N, so that the only way for the liquid under pressure to pass is through the
supply pipe D through the hydraulic engine working its piston and exhausting into
the pipe G and back into the tank F, the piston rod of the hydraulic engine H is
connected by the lever Q with the feeders of the inain bellows R. Therefore when
the valve I is closed and the liquid ander pressure is passing through the pipe D' the
hydraulic cylinder is working the feeders R and supplying the organ with wind.
S is a draw stop and lever for mechanically raising the lever J and operating the-
valve I when the hydraulic cylinder is not required to work. T is a section of the
valve I the weight V on the lever W for holding the valve Y closed being adjustable
to suit any pressure required in the hydraulic engine which may be found necessary
to work the feeders R. U, is a belt from motor to driving wheel of pump.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
clann 13
The combination of the gas, oil, or other motor with a pump for generating pressure
for driving a motor engine, with a valve arrangement for regulating the same, actuated
by the bellows of the organ substantially as described.
Dated this 12th day of June 1896.
FREDERICK WILLIAM DURHAM, JNR.