Year: 1887

page_text: Date of Application, 28th Feb., 1887
Complete Left, 28th Nov., 1887
Complete Accepted, 30th Dec., 1887
I, JAMES KEITH of 57 Holborn Viaduct in the City of London, Gas, Hydraulic,
Heating and Ventilating Engineer, do hereby declare the nature of this invention to
be as follows:-
My invention has for object mainly to lessen the cost of production and increase
the efficiency of sectional coils or radiators of the class described in the Specification
of Letters Patent granted to me No. 1920 of 1882, the improved coil or radiator
which is adapted for heating by the use of hot water or steam, being composed of
sections consisting each of a series of vertical tubes connected to form a longitudinal
row instead of being as under the construction described in the before mentioned
Specification, connected in a transverse row. Each vertical tube of the section is
connected to the adjoining tubes by longitudinal tubular water ways at or near the
top and bottom to provide for the circulation through the tubes of hot water or steam
which is supplied from a boiler through flow and return pipes connected to each end
of the coil in the line of the lower or upper longitudinal water ways.
Each section consists of a single casting of any suitable length and height, and to
provide for connecting two or more of them to form a long coil, orifices are formned
in the ends opposite the longitudinal water ways and are suitably faced, the sections
being secured together by short bolts passed longitudinally through.projecting fins or
flanges formed on the outside of the end tubes, the openings at the upper or lower
ends of the coil or radiator, which are not connected to the flow and return pipes,
being closed by caps or covers. The vertical tubes of the coil sections are by
preference of oval cross-section and have formed on their exterior projecting fins
extending the full length of the tubes and terminating at the base in flanges which
form feet for supporting the coil, while the connecting water ways are formed
preferably of short round tubes having formed on them flange like ribs between the
vertical tubes. To provide great radiating surface without unduly lengthening the
coil or radiator two or more sections inay be connected together side to side, short

page_text: transverse flanged tubes serving as water ways being formed at top and bottom at or
near each end of the coil or radiator and the sections being secured together in paralle!
rows by bolts passing through the transverse water ways, suitable joints being formed
between the faced flanges of the transverse tubes.
Two or more coils or radiators each consisting of one or more sections may be placed
alongside each other without being connected the one to the other and each connected
to a main flow and return pipe, so that any of them may be closed while the others
remain in connection with the flow and return pipes, to provide for regulating the
heat given off to the circumambient air.
CRUIKSHANK & FAIRWEATHER,
62, St. Vincent Street, Glasgow,
Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Heating Coils or Radiators.
I, JAMES KEITH of 57 Holborn Viaduct, in the City of London, Gas, Hydraulic,
Heating and Ventilating 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 :-
My invention has for object mainly to lessen the cost of production and increase
the efficiency of heating coils or radiators of the class described in the Specification of
Letters Patent granted to me No. 1920 of 1882, the improved coil or radiator which
is adapted for heating by the use of hot water or steam, being composed of a series of
vertical tubes with longitudinal water ways at top and bottom, forming a longitudinal
row, coil or section in one casting, instead of each single coil being constructed of
pieces connected together transversely of the rows of tubes as described in the before
mentioned Specification.
As represented in front elevation at figure 1, in end elevation at figure 2, and in
plan at figure 3 of the accompanying drawings each vertical tube a of the coil or
section A is connected to the adjoining tubes by longitudinal tubular water ways bat
or near the top and bottom to provide for the circulation through the tubes of hot
water or steam which is supplied from a boiler through flow and return pipes connected
at e to each end of the coil in the line of the lower or upper longitudinal water ways
or both, at either end; or the flow pipe can be connected at the one end and the return
pipe at the other end, both connections being preferably at the lower water way.
Each coil or section A consists of a single casting of any suitable length or height,
and to provide for connecting two or more of them to form a long coil, orifices are
formed at d in the ends opposite the longitudinal water ways and are suitably faced,
the coils or sections being secured together by short bolts, as shown in detail at
figure 4, passed longitudinally through projecting fins or gills a' formed on the outside
of the end tubes, the openings at the upper or lower ends of the coil or radiator
which are not connected to the flow and return pipes being closed by caps or covers f.
The vertical tubes a of the coils or sections are by preference of oval cross section as
shown particularly at figure 4, and have formed on the exterior, projecting fins or
gills g, extending the full length of the tubes, and terminating at the base in flanges h
which form feet for supporting the coil, while the longitudinal connecting water
ways b, are formed preferably of round tubes having formed on them flange like. ribs
or gills between the vertical tubes. To provide great radiating surface without
unduly lengthening the coil or radiator, two or more coils or series of coils may be
connected together side to side as indicated in the perspective view figure 5, short
transverse flanged tubes j. serving as water ways being formed at top and bottom at
or near each end of the coil or radiator, or as shown in figure 5, and the coils being
secured together in parallel rows as indicated in vertical section at figure 6 by bolts k
passing through the transverse water ways, suitable joints being formed between the
faced flanges of the transverse tubes j.

page_text: Two or more coils or radiators each consisting of single or extended coils may be
placed alongside each other without being connected the one to the other sidewise and
each be connected to a main flow and return pipe at either end so that any of them
may be shut off while the others remain in connection with the flow and return pipes,
to provide for regulating the heat given off to the circumambient air.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what I
claim is:
1. A heating coil or radiator made in a single casting substantially as hereinbefore
described with reference to figures 1, 2 and 3 of the annexed drawings.
2. A heating coil or radiator composed of single coils connected together, sub-
stantially as hereinbefore described and whereby provision is made for extending the
coil lengthwise or sidewise or both.

page_text: b
Figa.