Improvements in or connected with Heat Regulating Apparatus.
Year: 1892

page_text: Date of Application, 26th Jan., 1892
Complete Specification Left, 3rd Oct., 1892-Accepted, 5th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in or connected with Heat Regulating Apparatus.
A communication by FERDINAND E. CHATARD, of Baltimore, in the State of
Maryland, United States of America.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Manchester, both
in the County of Lancaster, and 323, High Holborn, in the County of Middlesex,
Civil Engineer, do hereby declare the nature of this invention to be as follows :—
The invention has in view the controlling of the combustion in a furnace boiler
or other heater automatically by thermostatic devices in such manner as to
maintain a uniform temperature in the apartment in which the thermostat is
located.
To this end, a thermostatically-controlled motor is combined with a valve which
admits air to the heater below or above the fire grate as it is required to increase
or diminish the temperature.
The first part of the invention relates to an improved construction of the valve,
whereby it is adapted to be operated by slight expenditure of power, and the
second to a motor of peculiar construction for operating the same.
A box or chamber is provided at its two sides with air inlet openings, and at its
top and bottom with two air delivery pipes. The two pipes, which are opened and
closed alternately, are extended one to the base of the furnace or heater below the
fire grate in order to supply air to promote combustion, and the other to the top of
the furnace above the fire in order to check combustion, after a manner commonly
practised and generally understood.
The valve for controlling the passage of air to the pipes consists of two
concentric sheet metal cylinders, one of which is fixed in position across the
interior of the chamber so that its ends encircle the air inlets, and the other
mounted on a horizontal axis, so as to turn freely within the former. The outer
cylinder is provided with top and bottom openings or ports through which the air
entering through the centre passes to the upper or the lower pipe as the case may
be. The inner cylinder or valve is also provided with top and bottom openings
or ports through which the air passes to the openings of the outer cylinder.
As the power available for operating the valve is very limited in amount, and as
the valve inust move with great ease, the mounting of the inner or rotary member
on its central axis so that it may turn easily and without frictional contact with the
surrounding cylinder or casing is of great advantage.
When the inner valve stands in a given position, its upper ports will register
with those in the outer cylinder and allow the air to ascend through a pipe to
deaden the fire; the lower open ports of the valve standing at this time over the
solid portion of the external cylinder, so that the passage of air to the lower pipe
is prevented. If, however, the valve be given a slight motion on its axis, the
upper ports will be closed and the lower ports opened so as to admit air to the fire.
It will be observed that the valve may be accurately balanced on its axis to turn
easily that the air pressure does not affect its action, and that by opening a series
of ports at one time it provides, by a slight movement, openings of great area for
the passage of the air.
For the purpose of operating the valve, the electro-magnetic motor is provided
controlled by a thermostat located in the apartment, the temperature of which
to be controlled. The motor consists of a lever or walking beam fixed on the
valve spindle and provided at its two ends with pendent, soft iron armatures, arranged

page_text: to rise and fall within the stationary solenoids, through which a current is passed
alternately, thus causing the armatures to descend, one at a time, and thus rock the
valve to and fro.
The thermostat is composed of a compound conducting bar arranged to vibrate
between two contact points so adjusted that it meets one or the other according as
the temperature reaches the maximum or minimum limit.
The minimum contact is connected through a conductor to a binding post, thence
through a conductor to a gravitating finger, thence through a conductor and a
solenoid to a binding post, thence through a conductor to the battery and a
conductor to thermostatic bar.
The maximum contact is connected through a conductor to a binding post, thence
through a conductor to a gravitating finger, thence through a conductor and solenoid
to a binding post, thence through a conductor to battery, and through a conductor
to thermostatic bar.
The walking beam carries a finger which acts to raise fingers alternately, so that
whenever a circuit is closed to excite one of the solenoids and move the valve, the
circuit is immediately opened again to prevent waste of the current, the circuits
being both in an open condition except at the instant when the valve is being moved.
This will be more clearly understood by considering the action in detail. Assume
that the valve stands open and that the temperature falls until the thermostatic
bar contacts on the left. The effect will be to complete the circuit through the
solenoid and cause its armature to descend and turn the valve until it is closed at
the top and opened at the bottom. As this action is completed, a finger is lifted
which breaks the circuit, at the same time lowering a finger of the other circuit so
that it may be completed in its turn when the thermostat contacts on the maximum
side, so as to reverse the motion of the valve.
If desired, spring catches or other suitable devices may be provided to engage
the beam and hold the valve from moving accidentally..
Dated this 25th day of January 1892.
WM. P. THOMPSON & Co.,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or connected with Heat Regulating Apparatus.
A communication by FERDINAND E. CHATARD, of Baltimore, in the State of
Maryland, United States of America.
I, WILLIAM PHILLIPS THOMPSON, F.C.S., M.I.M.E., of the Agency for
Foreign Patent Solicitors, 6, Lord Street, Liverpool, and 6, Bank Street, Man-
chester, both in the County of Lancaster, and 323, High Holborn, in the County of
Middlesex, Civil Engineer, 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:-
This invention has in view the controlling of the combustion in a furnace boiler
or other licater automatically by thermostatic devices in such manner as to maintain
a uniform temperature in the apartment in which the thermostat is located.
To this end, a thermostatically-controlled motor is combined with a valve which
admits air to the heater below or above the fire grate as it is required to increase
or diminish the temperature.
The first part of the invention relates to an improved construction of the valve,
whereby it is adapted to be operated by slight expenditure of power, and the
second to a motor of peculiar construction for operating the same.
In the accompanying drawings-
Figure 1 is an elevation of the device, the motor being shown in vertical
section.

page_text: and 3.
F
Figure 3 is a vertical section on the line 3-3 of Figure 2.
Referring to the drawings-
A represents a box or chamber provided at its two sides with air inlet openings a
and at its top and bottom with two air delivery pipes B and C. The two pipes,.
which are opened and closed alternately, are extended one to the base of the
furnace or heater below the fire grate in order to supply air to promote,
combustion, and the other to the top of the furnace above the fire in order to
check combustion, after a manner commonly practised and generally understood.
The valve for controlling the passage of air to the pipes consists of two con-
centric sheet metal cylinders D and E, the former fixed in position across the
interior of the chamber so that its ends encircle the air inlets, and the latter
mounted on a horizontal axis e so as to turn freely within the other. The outer
cylinder is provided with top and bottom openings or ports d through which the air
entering through the centre passes to the upper or the lower pipe as the case may
be. The inner cylinder or valve is also provided with top and bottom openings
or ports e¹, 2 through which the air passes to the openings of the outer cylinder.
As the power available for operating the valve is very limited in amount,.
and as the valve must move with great ease, the mounting of the inner or rotary
member on its central axis so that it may, turn easily and without frictional contact
with the surrounding cylinder or casing is of great advantage.
When the inner valve stands in the position shown in Figure 3, its upper ports
will register with those in the outer cylinder and allow the air to ascend through
pipe C to deaden the fire; the lower open ports of the valve standing at this time
over the solid portion of the external cylinder so that the passage of air to the
lower pipe is prevented. If, however, the valve be given a slight motion on its
axis, the upper ports will be closed and the lower ports opened so as to admit air to
the fire. It will be observed that the valve may be accurately balanced on its axis
to turn easily that the air pressure does not affect its action, and that, by opening
a series of ports at one time, it provides, by a slight movement, openings of great
area for the passage of the air.
For the purpose of operating the valve, there is provided the electro magnetic
motor G, controlled by a thermostat H located in the apartment the temperature
of which is to be controlled. The motor consists of a lever or walking beam g
fixed on the valve spindle, and provided at its two ends with pendent soft iron
armatures garranged to rise and fall within the stationary solenoids g³ and g
through which a current is passed alternately, thus causing the armatures to descend,
one at a time, and thus rock the valve to and fro.
The thermostat is composed of a compound conducting-bar / arranged to vibrate
between two contact-points and 2 so adjusted that it meets one or the other
according as the temperature reaches the maximum or minimum limit.
The minimum contact is connected through conductor to binding post h³,
thence through conductor to gravitating finger, thence through conductor 48
and solenoid to binding post, thence through conductor 10 to battery, and
conductor to thermostatic bar.
The maximum contact is connected through conductor " to binding post 1³,
thence through conductor / to gravitating finger 41, thence through conductor /16
and solenoid g³ to binding post, thence through conductor 10 to battery, and
through conductor " to thermostatic bar.
The walking beam carries a finger which acts to raise the fingers his
alternately, so that, whenever a circuit is closed to excite one of the solenoids and
move the valve, the circuit is immediately opened again to prevent waste of the
current; the circuits being both in an open condition except at the instant when
the valve is being moved. This will be more clearly understood by considering the
action in detail. Assume that the valve stands open as in Figure 3, and that
the temperature falls until the thermostatic bar contacts on the left. The effect

page_text: will be to complete the circuit through solenoid and cause its armature to descend
and turn the valve until it is closed at the top and opened at the bottom. As this
action is completed, the finger lifts the finger and breaks the circuit, at the
same time lowering the finger 4 of the other circuit so that it may be completed
in its turn when the thermostat contacts on the maximum side, so as to reverse the
motion of the valve.
If desired, spring catches I or other suitable devices may be provided to engage
the beam, as shown, and hold the valve from moving accidentally.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as commnunicated to me by
my foreign correspondent, I declare that what I claim is-
1. In combination with a thermostat and an electric motor controlled thereby, a
valve operated by the motor and consisting of the fixed cylinder provided with
ports, and the internal rotary cylinder sustained by a central axis and having
ports arranged to register at the top and bottom alternately with the ports of the
outer cylinder.
2. In a heat-regulating apparatus, the damper to control the action of the
heater, consisting of the rotating and the non-rotating cylinders provided each
with a series of ports arranged to register on the two sides alternately, in
combination with a central shaft sustaining the rotary cylinder and pipes leading
from opposite sides to deliver air to the top or bottom of the heater as
demanded.
3. In combination with the cylindrical rotary valve, its lever, the electrodes
attached thereto, the solenoids, two thermostatically controlled circuits including
the respective solenoids, the gravitating circuit-controlling fingers and 4, and
the finger on the lever whereby these conducting fingers are alternately out of
action.
1003
WM. P. THOMPSON & Co.,
Agents for the Applicant.