IMPROVE- MENTS IN REGENERATIVE-GAS HEATING ARRANGEMENTS FOR HEATING WATER OR AIR, ALSO APPLICABLE FOR HEATING STEAM BOILERS AND FOR OTHER. PURPOSES.
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by Edwin Ambrose Brydges at the
Office of the Commissioners of Patents on the 6th July 1882. Communi-
cated to him by David Grove, Sanitary Engineer, of the City of Berlin.
EDWIN AMBROSE BRYDGES of the firm of Brydges & Co Engineers and Patent
Solicitors of 107 Königgrätzer Str in the City of Berlin and German Empire
and of 6 St. Leonards Terrace Upton in the County of Middlesex. IMPROVE-
MENTS IN REGENERATIVE-GAS HEATING ARRANGEMENTS FOR HEATING WATER OR
AIR, ALSO APPLICABLE FOR HEATING STEAM BOILERS AND FOR OTHER. PURPOSES.
A communication to me by David Grove, Sanitary Engineer of the City of Berlin
aforesaid,
This Invention relates to improvements in regenerative gas heating arrange-
ments for heating water or air, is also applicable.for heating steam boilers and for
other purposes.
The gases produced in the generator pass through a suitable connection pipe
into the flue or channel, from here they pass through the narrow orifices of the
burner into the combustion chamber where they come into contact with warmed
atmospheric air.
After the mixture of gas and air has been ignited by means of a gas jet or a rag
impregnated with petroleum or other suitable means, for which purpose an ignition
hole is made use of the burning gases stream through the cast iron canals or flues
in a serpentine direction from one pipe into the other and then pass through the
flue into the chimney.
The air for the combustion is heated in the interior of suitable canals or
chambers. This said air enters through two openings which can be closed or
altered in size and continues in a serpentine direction from one chamber into the
other until it issues from the top chamber through several small orifices provided
for that purpose and serves to promote the combustion of the regenerative gas.
These said air heating flues or chambers are lined with refractory material and
the air is caused to circulate through them by the draught produced by the chimney
or stack.

page_text: A spyhole for the purpose of observing the flame is arranged, by means of which
air can be admitted above the burner or slot to the flame which is done by
drawing over the closing or stopping piece.
The cast iron canals flues or pipes which heat the air for the rooms are provided
with a large number of ribs in order to present to the cold air passing through the
flue to the heating chamber the greatest possible heating surface.
Besides this the said cast iron canals flues or pipes are provided at the ends with
projections or shoulders, which said shoulders or projections are not fixed in brick-
work, but are laid loosely in sand in order to admit of expansion and contraction
taking place consequent upon the important changes of temperature.
In order to prevent the top air heating canal or pipe from becoming red hot,
which would render the air in the air chamber deleterious to health, the upper
air heating canals or pipes are lined with fireclay or other suitable refractory
material.
A water receptacle or dish is situated within the air warming chamber, the
purpose of which is to supply the necessary amount of moisture to the warmed air,
before the same reaches the dwelling apartments through the conducting flues.
This said receptacle or dish is kept supplied with water by means of another
similar receptacle, which is situated outside the air warming chamber
This latter receptacle is fed by a suitable water pipe, which said pipe is in
connection with the water main.
:
By means of a suitable connecting pipe or tube, the two vessels or receptacles
act as communicating pipes so that the height of the water in the vessel in the
interior of the air heating chamber can be ascertained by means of the water glass
on the receptacle situated outside the said air heating chamber.
In order to avoid the necessity of putting the whole apparatus out of operation
when repairs have to done a reserve furnace is arranged and in this case the air
heating chamber can be heated by a direct fire.
The construction of the gas generator is as follows:
The fire bars are arranged stair like and terminate in an ordinary level grate
which is provided with a slide for removing clinkers suitably arranged pieces of
angle iron serve to carry the said clinker slide.
The filling shaft or funnel can be closed during the operation of filling by a trap
or falling door. This trap door is fixed on a suitable shaft or axle and is raised or
lowered by the turning of the latter.
The filling shaft can also if desired be closed tight at the top by means of a
cover and water joint in order to prevent the gases from escaping during the
filling.
The connection pipe is provided with a throttle valve in order to regulate or cut
off the exit or production of gas.
A safety valve provided with a water joint is also arranged on the aforesaid
connecting pipe, the purpose of which is to permit of the free and dangerless exit
of the gas when the throttle valve is closed and the slide door is opened by accident
or carelessness. This is effected by the cover being pressed off by the force of
the gas.
The burner is made of fire clay, gannister or other suitable refractory material
and moves on small rollers; projections running in corresponding grooves enable
the burner stone to move or be slid regularly.
The arrangement of the apparatus for heating water by means of regenerative
gas is as follows: The generator gases pass through the connecting pipe to the
first canal or flue, which said canal or flue is in communication with a tar pit.
From this canal or flue the gases reach the second canal or flue and from here they
pass through the long opening of the burner direct into the heating or combustion
chamber. As the gases reach or enter the combustion chamber, they are
thoroughly mixed or combined with the heated atmospheric air, which issues from
the orifices of the top air warming chamber.
The pipes through which the water to be heated circulates are arranged in the

page_text: interior of the combustion chamber in suitable coils around which said coils the
gases or flames play, heat the water in the said coils and afterwards escape into the
chimney or stack.
The chambers or canals for heating or warming the air for combustion are made
in this case of wrought iron.
"
The air enters through suitable openings, which can be altered in size or closed,
into the bottom canals or chambers proceeds then upwards in a serpentine direction
and issues through several small orifices immediately above the burner where it
serves to promote the combustion of the regenerative gases.
The construction of the burner for this arrangement is quite similar to the
burner used for heating or warming air.