other Boilers
Year: 1888

page_text: Date of Application, 10th Feb., 1888-
Complete Specification Left, 17th Oct., 1888
Complete Specification Accepted, 23rd Nov., 1888
or other Boilers.
JOHN RANKINE, of 21 Payne Street, North Shields, Northumberland, Engineer, and
ROBERT FALCONER, of 47 Payne Street North Shields, Northumberland, Engineer,
do hereby declare the nature of this invention to be as follows :-
We propose to make these plates with a plain surface on one side, placing the plain
surface on the water side of the boiler: On the other side of the plate, and next to
the fire, we propose to strengthen the plate or structure by means of an irregular
surface, either in the form of ribs, squares, circles, diamond-shape, or other projections,
thus obtaining sufficient strength and stiffness to resist high pressures without having
objectionable irregularities on the water side of the boiler, facilitating the conduction
of the heat due to the reduced thickness of plates between the projections.
In the formation of furnaces, we may roll the plate throughout with the aforesaid
projections, or may only roll that portion of the plate which is exposed to the fire,
leaving the bottom part of the furnace plain. Or the formation may be a combination
of plain surfaces and projections as may be determined.
Dated this 9th day of February in the voor 1000
JOHN RANKINE.
ROBERT FALCONER.

page_text: Plates for Forming Furnaces and Combustion Chambers in Marine
or other Boilers.
WO, JOHN RANKINE, of 21, Payne Street, North Shields, Northumberland, Engineer,
and ROBERT FALCONER, of 47, Payne Street, North Shields, Northumberland,
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 :-
Our invention relates to the manufacture of iron, steel, and other plates, chiefly
designed for use in the furnaces and other internal parts of steam boilers and comprises
the improvements hereinafter described.
According to our said invention we make plates which are plain on one side but
which on the other side are provided with ribs or projections, arranged in the form of
strips, squares, circles, diamonds, or in any other suitable manner.
In manufacturing our improved plates we form the ribs or projections thereon by
rolling the plates being preferably first rolled plain on both sides and then again
rolled between suitable rollers to produce the ribs or projections.
In constructing boiler furnaces or other internal parts with our plates, the plain
side is placed towards tho interior of the boiler, and the ribbed side towards the furnace
or fire. The different plates may be connected either by welding or butt strapping,
or in any other desirable manner.
In the accompanying drawing
Figures 1, 2, and 3 are sections of portions of plates illustrating ribs or projections
of three different shapes; it is to be understood, however, that the ribs may be of any
other desirable shape.
Figure 4 shows a longitudinal section of a boiler furnace or flue of circular shape,
the ribs being so placed as to pass circumferentially around the furnace.
Tho chief advantages of our invention are that scale is not so liable to be deposited as
is the case when the internal face of the boiler furnaces or other internal parts, is
corrugated or roughened; that the said ribs or projections render the plates very
strong; and that furnaces made therewith can be repaired with greator facility than
furnaces made with plates which are uneven on the water side.
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 :-
(1.) The manufacture and use of boiler plates which are plain on one said and have
a series of ribs or projections upon the other side, substantially in the manner
described.
(2.) A steam boiler furnace or other internal parts constructed of plates
formed with ribs or projections upon one side the other side being plain and placed
inwards.
T
11
1
1000