Generating Steam by Means of Electricity Derived from Dynamos Driven by the Steam Generated.
Year: 1895

page_text: Date of Application, 27th Nov., 1895
Complete Specification Left, 28th Sept., 1896-Accepted, 7th Nov.,
1896
PROVISIONAL SPECIFICATION.
Generating Steam by Means of Electricity Derived from Dynamos
Driven by the Steam Generated.
We, JOHN HENRIQUE DUNN, of Saville House, Wood Green, in the County
of Middlesex Surveyor and Accountant, and ROBERT GRAEME ELPHINSTONE
DALRYMPLE, of 6, Gledstane Road, West Kensington, in the County of London,
Colonel in Her Majesty's Army, do hereby declare the nature of our invention to
be as follows:-
This invention relates to means for generating steam by the use of electricity
alone or in combination with heat derived from other source such as a furnace. The
electricity employed may be derived from dynamos, operated by rotating shafts,
axles, or the like, driven by the steam generated in the boiler. In a steam boiler
we provide beneath the water level, electric conductors arranged in pairs after the
manner of the carbons of electric arc lamps or the said conductors may be
otherwise arranged so that when a current is passing therethrough heat is produced
which will rapidly generate steam in close proximity to the said conductors. The
steam thus generated can be employed for driving engines from which dynamos
may be operated to generate the electricity supplied to the conductors in the
boiler. The electricity generated may be conducted from the dynamos direct to'
the conductors in the boiler, or it may be stored in accumulators or secondary
batteries from which current to the conductors may be supplied as required.
When the invention is applied to the boilers of locomotive engines the dynamos
may be driven from the axles or one of the axles of the engine or from one or more
of the axles of the carriages composing the train to which the locomotive engine is
connected. When the invention is applied to the boilers of marine engines the
dynamos may be driven from the screw shaft or other suitable moving part of the
engine.
By means of this invention, fuel for generating the steam in the boiler, is saved
or economised.
Dated this 27th day of November 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents..
COMIDELE DI BUITIVATION.
Generating Steam by Means of Electricity Derived from Dynamos
Driven by the Steam Generated.
7
We, JOHN HENRIQUE DUNN, late of Saville House but at present residing at:
28 Parkhurst Road, Wood Green, in the County of Middlesex, Surveyor and
Accountant, and ROBERT GRAEME ELPHINSTONE DALRYMPLE, of 6 Gledstane.
Road, West Kensington, in the County of London, Colonel in Her Majesty's
Army, 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 relates to means for generating steam by the use of electricity
Γ
:

page_text: alone or in combination with heat derived from other source such as a furnace.
The electricity employed may be derived from dynamos operated by rotating
shafts, axles, or the like, driven by the steam generated in the boiler.
In a steam boiler we provide beneath the water level, electric conductors,
arranged in pairs after the manner of the carbons of electric arc lamps or the said
conductors may be otherwise arranged so that when a current is passing there-
through heat is produced which will rapidly generate steam in close proximity to
the said conductors.
The steam thus generated can be employed for driving engines from which
dynamos may be operated to generate the electricity supplied to the conductors
in the boiler. The electricity generated may be conducted from the dynamos
direct to the conductors in the boiler, or it may be stored in accumulators or
secondary batteries from which, current to the conductors may be supplied as
required. When the invention is applied to the boilers of locomotive engines the
dynamos may be driven from the axles or one of the axles of the engine or from
one or more of the axles of the carriages composing the train to which the
locomotive engine is connected. When the invention is applied to the boilers of
marine engines the dynamos may be driven from the screw shaft or other suitable
moving part of the engine. By means of this invention fuel for generating the
steam in the boiler is saved or economised.
Figure 1 of the accompanying drawings shews diagrammatically a means, for
applying this invention to locomotive engines and railway trains.
Figure 2 is a transverse section of the locomotive boiler drawn to a larger
scale and
Figure 3 represents diagrammatically the invention applied to a torpedo boat.
Referring to Figures 1 and 2 A represents a locomotive engine B a tender
C passenger carriages or the like and D the guard's brake vau.
In the tender B are arranged secondary batteries or accumulators E which are
charged by dynamos F situated in either of the carriages C or in the guard's
brake van D as shewn. These dynamos can be driven from one or more of the
axles of the vehicle in which they are placed, the electricity generated thereby,
being conducted to and stored in the accumulator batteries E. In the boiler of
the locomotive below the surface of the water are electrodes G arranged in pairs
after the manner of the electrode employed in electric arc lamps. Current from
the storage batteries E or if desired direct from the dynamos is conducted through
the electrodes G so as to maintain permanent arcs whereby heat is produced which
will rapidly generate steam in the boiler means being provided for feeding the
carbons forward as they burn away, the said carbons being carried in insulated
If
holders passing through stuffing boxes which prevent the escape of water.
desired in addition to the heat generated by the electric current, heat from the
The steam
furnace may be employed to facilitate the generation of steam.
generated is employed for driving the locomotive engines.
In applying my invention to steam ships or like vessels the dynamos can be
worked by gearing from the screw shaft or other rotary part of the engine as
shewn in Figure 3 in which figure F represents the dynamo, E storage batteries,
A the steam boilers and A² the engines for driving the screw H.
In the boiler A below the water therein is arranged a resistance G through
which current from the batterics E is conducted, the heat derived from the said
resistance is such as to rapidly generate steam in the boiler which steam, is
conducted through a pipe a to the engines from which the screw shaft H' is worked
to propel the vessel. The dynamo F is shewn as being worked by means of
gearing from the screw shaft H³ the gearing being multiplied to the extent desired
so as to drive the dynamo at the required speed. The electricity generated by the
dynamo or dynamos may be conducted to the storage batteries E, or it may be
conducted direct through the resistance G in the boiler, which resistance if desired
may consist of electrodes as in the arrangement described with reference to
Figures 1 and 2 or any other arrangement by which heat produced by the current

page_text: in passing therethrough will be sufficient to generate steam, and if desired heat
from a furnace may be employed in conjunction therewith to facilitate the
generation of the steam.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. Means for generating steam by the use of electricity derived from dynamos.
operated by mechanism worked by the steam generated by the electricity produced,.
in combination or not with heat derived from other source such as a furnace
substantially as herein before described.
2. Means for generating steam in the boilers of locomotives by the use of
electricity generated by dynamos operated from the axles or one of the axles of
the locomotive, or a carriage or carriages connected to the locomotive, the steam
generated by the electric current in combination or not with heat derived from
other source, such as a furnace, being employed for driving the locomotive engine
substantially as herein before described.
3. In marine steam ships or like vessels, means for generating steam in the steam
boilers of the said vessels by the use of electricity derived from dynamos operated
from the screw shaft of the vessel or other rotary part of the engine substantially
as hereinbefore described.
Dated this 28th day of Se-1000
J. H. DUNN.
Johnsons & Willcox,
47 Lincoln's Inn Fields, London, W.C., Agents.