Improvements in Steam Boiler Furnaces.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Steam Boiler Furnaces.
I, FRANCIS DISON BUMSTED, of Cannock Chase Engine Works, Hednesford, in
the County of Stafford, Engineer, do hereby declare the nature of this invention
to le as follows:-
This invention has for its object to enable the generation of steam in a boiler
to be readily controlled in accordance with requirement so that when steam is
not being used, generation of steam in the boiler may be arrested until a supply
is needed. For this purpose the furnace is made movable in relation to the
boiler itself in such a manner that when steam is required to be generated the
furnace will occupy a position in which the hot gases and products of com-
bustion therefrom will act upon the heating surface of the boiler, but when it is
desired to arrest the generation of steam without necessarily extinguishing the
fire, the furnace can be moved into a position in which the hot gases and products
of combustion instead of acting upon the heating surface of the boiler will o
conveyed either by a suitable flue or flues to some required place for utilization
or will be allowed to escape up a suitable chimney, or be partly utilized and partly.
allowed to escape as convenience may dictate.
The invention may be carried out in various forms; the furnace may be
adapted either to be slidden on grooves or rails, or to swing laterally.
TAL: O Jon of November 1900C
Improvements in Steam Boiler Furnaces.
I, FRANCIS DIXON BUMSTED, of Cannock Chase Engine Works, Hednesford, in
the County of Stafford, 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 for its object to enable the generation of steam in a boiler
to be readily controlled in accordance with requirement so that when steam is
not being used, generation of steam in the boiler may be arrested until a supply
is needed. For this purpose the furnace is made movable in relation to the
boiler itself in such a manner that when steam is required to be generated the

page_text: furnace will occupy a position in which the hot gases and products of com-
bustion therefrom will act upon the heating surface of the boiler but when it is
desired to arrest the generation of steam without necessarily extinguishing the
fire, the furnace can be moved into a position in which the hot gases and products
of combustion instead of acting upon the heating surface of the boiler will be
conveyed either by a suitable flue or flues to some required place for utilisation
or will be allowed to escape up a suitable chimney, or be partly utilised and partly
allowed to escape, as convenience may dictate.
The invention may be carried out in various forms; the furnace may be
adapted either to be slidden on grooves or rails, or to swing laterally.
The accompanying drawing illustrates in side elevation an application of the
invention to a vertical boiler 1 which is provided at one side with or arranged
adjacent to a supplementary chimney or hood 2 similar to that above an ordinary
smith's forge. The furnace or fire box 3 is connected to the boiler 1 and hood 2
by pairs of links 4 and 5, which are pivoted at 4" 5" and 4b 5b to the furnace or
fire-box and the boiler and hood respectively. One of the links 5 has an
extension 6 which forms a handle and the arrangement is such that by raising the
handle 6 the furnace 3 can, when desired, he swung from under the boiler into
the position indicated in dotted lines, so that the hot gases and products of com-
bustion will pass directly up into the hood 2, thus arresting or practically so
the generation of steam in the boiler 1. Suitable means are provided for holding
the handle 6 in its two extreme positions.
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
A steam boiler furnace made movable in relation to the boiler itself in such a
manner that when steam is required to be generated, the furnace will occupy a
position in which the hot gases and products of combustion therefrom will act
upon the heating surface of the boiler but when it is desired to arrest the generation
of steam without necessarily extinguishing the fire, the furnace can be
moved into a position in which the hot gases and products of combustion instead
of acting upon the heating surface of the boiler will be conveyed by a suitable
flue or flues to some required place for utilization, or will be allowed to escape up
a suitable chimney direct, or be partly utilized and partly allowed to escape,
substantially as herein described for the purpose specified.
Dated this 9th day of August 1897.
For the Applicant,
W. LLOYD WISE,
46 Lincoln's Inn Fields, London, W.C., Chartered Patent Agent.