Improvements in Hot Water Circulation Heating Apparatus.
Year: 1897

page_text: Date of Application, 8th May, 1897--Accepted, 21st Aug., 1897
COMPLETE SPECIFICATION.
Improvements in Hot Water Circulation Heating Apparatus.
I, BENJAMIN JOSEPH BARNARD MILLS, of 23 Southampton Buildings in the
County of London, Patent Agent, do hereby declare the nature of this invention, a
communication to me from CLAUDE DREVET of 65 Rue de la Villette, Lyons, in the
Republic of France, Manufacturer of heating apparatus, and in what manner the
same is to be performed to be particularly described and ascertained in and by the
following statement:-
The present application has for its object an automatic propeller, serving to effect
the propulsion of water in hot water circulation heating apparatus called thermo-
syphon, when the boilers are placed higher than the level of the circulation pipes, and
at any distance.
The automatic propeller is composed:
1. Of a valve B located in a box A, communicating at one side with the pipe C
for returning the water to the boiler, and at the other side with the circulation
pipes D.
2. Of a second valve F placed on the outlet pipe G of the boiler the box E of which
is surmounted by a vertical reservoir J and is connected on a level with the circulation
pipe H.
3. Of a third valve establishing communication between the outlet and return
water pipes and placed more or less near to the boiler.
When the water in the boiler commences to boil, it produces intermittent risings
of water from the boiler through the valve F into the reservoir J and a vacuum is at
the same time formed in the boiler.
In the intervals, the valve F is closed, when, as the water which has passed there.
through cannot return, it enters the circulation pipe H and the valve B opening under
this increased charge and in obedience to the vacuum in the boiler allows a quantity
of water to enter the boiler equal to that which has left it.
This intermittent rising of water from the boiler causes an intermittent circulation
with sudden stoppages.
This objection is avoided by the third valve I which opens at the moment
when the vacuum in the boiler has been refilled and the pressure in the latter
closes the valve B and thus permits the water contained in the circuit to continue
new impulse. The
its movement by the speed acquired until it receives a
water at such time passing from the pipe D through the valve I and into
the pipe H.
Thus a continuous circulation is obtained within the pipes D and H of a nearly
uniform speed.
The small quantity of steam formed in the reservoir J by the rise of the water
in a state of ebullition, passes through the pipe L and condenses in the feeding
Corvair M

page_text: This reservoir which is provided with a ball cock, supplies a constant feed to
the boiler by the pipe O.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1. In hot water circulation heating apparatus the combination therewith of two
valves placed the one at the entrance and the other at exit of water from
the boiler and opening in the direction of the circulation substantially as
herein set forth.
.
2. In hot water circulation heating apparatus, the combination therewith of a vertical
reservoir surmounting the valve placed at the outlet and communicating with the
entry of the circuit substantially as herein set forth..
3. In hot water circulation heating apparatus, the combination therewith of a valve
causing the two ends of the circuit to communicate before their junction with the
boiler substantially as herein set forth.
4. The improvements in hot water circulation heating apparatus substantially as
herein set forth.
ונימ
1007