Improvements in Steam Boiler Furnaces and Flues.
Year: 1895

page_text: Date of Application, 16th Sept., 1895
Complete Specification Left, 16th June, 1896-Accepted, 18th July, 1896
PROVISIONAL SPECIFICATION.
Improvements in Steam Boiler Furnaces and Flues.
We, JOHN DEVONSHIRE ELLIS, Managing Director of John Brown & Co. Ld.,
of Atlas Works, Sheffield, in the County of York, and JOSEPH NODDER, of the
same place, Ironworks Manager, do hereby declare the nature of this invention to
be as follows :-
This invention has for its object to provide boiler furnaces, or flues, in which
there is an absence of pockets for the deposit of scale, and which are easily
cleaned on the water side; the manufacture being readily performed, and the
furnace, or flue, presenting great evenness of expansion and contraction throughout.
According to this invention the longitudinal section of the furnace, or flue, is made
to present alternating flat, or plain, parts, parallel with the axis, in the case of a
furnace, or flue, with parallel sides, and curved portions, preferably of long radius,
so as to give long sweeping curves; the concave sides being presented towards the
water space, and the convex sides towards the fire space of the furnace, or tube.
The flat, or plain, parts, thus alternating with the curved parts, are preferably
joined by curved parts of short radius, the water side of the furnace, or tube, thus
presenting shallow depressions, of considerable width, alternating with the flat, or
plain, parts.
Dated this 16th day of September 1895.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, W.C., Agents.
Improvements in Steam Boiler Furnaces and Flues.
We, JOHN DEVONSHIRE ELLIS Managing Director of John Brown & Company
Limited of Atlas Works Sheffield in the County of York and JOSEPH NODDER
of the same place, Ironworks Manager 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 provide boiler furnaces, or flues, in which
there is an absence of pockets for the deposit of scale, and which are easily
cleaned on the water side, the manufacture being readily performed and the
furnace, or flue, presenting great evenness of expansion and contraction throughout.
The accompanying drawing is a longitudinal section of part of a furnace or flue
formed in accordance with this invention. The longitudinal section of the furnace,
or flue, according to this invention, is made to present alternating flat, or plain
parts A, (parallel with the axie, in the case of a furnace, or flue, with parallel
sides,) and curved portions B, preferably of long radius, so as to give long
sweeping curves; the concave sides being presented towards the water space (the
upper side in the drawing) and the convex sides being presented towards the fire
space of the furnace, or tube, (the lower side in the drawing). The flat, or plain,
parts A, thus alternating with the curved parts B, are preferably joined by curved
D
ديد

page_text: parts C, of short radius, the water side of the furnace, or tube, thus presenting
shallow depressions (B) of considerable width, alternating with the flat, or plain,
parts A.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is :-
-
A boiler furnace or flue made with shallow depressions of considerable width on
the water side alternating with flat or plain parts as bereinbefore described and
illustrated by the accompanying drawing.
Dated this 16th day of June 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.