IMPROVEMENTS IN HEAT RADIATORS
Year: 1876

page_text: LETTERS PATENT to Alexander Melville Clark, of 53, Chancery Lane, in the
County of Middlesex, Patent Agent, for the Invention of "IMPROVEMENTS IN
HEAT RADIATORS." A communication from abroad by Emerson Colon Angell;
of the City, County, and State of New York, United States of America.
PROVISIONAL SPECIFICATION left by the said Alexander Melville Clark at
the Office of the Commissioners of Patents on the 1st March 1876.
ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of Mid-
dlesex, Patent Agent. "IMPROVEMENTS IN HEAT RADIATORS."
This Invention is illustrated in the accompanying Drawing, Figure 1 of which is
a part sectional elevation of the improved heat radiator.
This radiator is connected with a stove or furnace by means of the upright tube
A. B is a direct draft tube; C is a damper in the draft tube; D is a damper in
the upright tube A; E is a valve or damper in the vertical tube F, and Ĝ is a
valve in the direct longitudinal tube B. The two latter dampers are slotted to
allow them to be turned when the clearing chain H is in place. When starting a
fire to heat up the radiator the damper C is opened, and the dampers D, E, and G
are closed. The damper I in the upright tube J is also closed, and the damper K
in the discharge tube L is opened. With this arrangement a direct draft to the
chimney is obtained, and the radiator is made ready for use. When the fire is well
going, the damper D in the upright tube A, and damper I in the upright tube J,
are opened, and the products of combustion allowed to pass through the series
of tubes M; as indicated by the arrows, and discharged into the pipe L, or continued
upward to another radiator in the apartment above.
Any number of the vertical tubes M may be used for radiating purposes by a
proper arrangement of the dampers. For instance, the dampers in the direct draft
flue B being closed, and the dampers D and I being opened, if the damper marked
N 5 is opened the tubes numbered 1, 2, 3, and 4 will radiate heat as the products
of combustion will pass into the direct draft flue at 5, and so if any other one of
the dampers N are opened. This is of course assuming that the draft through the
direct flue B will overcome the draft through the balance of the flues M.
In cleaning the radiator all the dampers N are opened, so that the ashes contained
in the tubes M will be discharged into the flue B. Q, Q are scrapers attached to
the chain H. P is a weight at one end of the chain. This chain may pass upward
Price Gd1

page_text: over a pulley if desired. The scrapers Qare drawn through the flue, and the loose
ashes and soot are discharged through the vertical tube F. The scrapers may be
either double or single, and any number may be used. These scrapers may remain
in the flue as the space R above them will be sufficient for the direct draft. The
scrapers may if desired be arranged upon an endless chain, carried by rollers,
turned by crank, as shown in dotted lines in the the Drawing. This radiator pre-
sents a very extended radiating surface; the products of combustion are so cut up
and divided that after passing through it but little heat can be carried to the
chimney and lost. The radiator is supported on legs S, independently of any stove
or furnace below it, and it is admirably adapted for economizing fuel.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by the
said Alexander Melville Clark in the Great Seal Patent Office on the 9th August
1876.
"
ALEXANDER MELVILLE CLARK, of 53, Chancery Lane, in the County of Mid-
dlesex, Patent Agent. IMPROVEMENTS IN HEAT RADIATORS." A communication
from abroad by Emerson Colon Angell, of the City, County, and State of New
York, United States of America.
Similar
This Invention relates to improvements in heat radiators, and is illustrated in
Figure 1 of the accompanying Drawings, which shows a view partly in section of
the Invention. Figure 2 is a cross section of Figure 1 on the line x, x.
letters of reference indicate corresponding parts in the two Figures. This radiator
is connected with a stove or furnace by means of upright tube A; B is a direct
draft tube; C is a damper in the draft tube³; D. is a damper in the upright tube A;
and E is a valve or damper in the vertical tube F; and G is a valve in the direct
longitudinal tube B. The two latter dampers are slotted to allow them to be
turned when the clearing chain H is in place. When starting a fire to heat up the
radiator the damper C is opened, and the dampers D, E, and G, are closed. The
damper I, in the upright tube J, is also closed; and the damper K, in the discharge
tube L, is opened. With this arrangement a direct draft to the chimney is obtained,
and the radiator is made ready for use. When the fire is well going the damper D
in the upright tube A, and damper I in the upright tube J, are opened, and the pro-
ducts of combustion are allowed to pass through the series of tubes M, as indicated
by the arrows, and are discharged into the pipe L, or continued upward to another
radiator in the apartinent above.
Any number of vertical tubes M may be used for radiating purposes by a
proper arrangement of the dampers. For instance, the dampers in the direct draft
flue B being closed, and the dampers D and I being opened, if the damper marked
N is opened, the tubes numbered 1, 2, 3, and 4 will radiate heat as the products
of combustion will pass into the direct draft flue at 5, and so if any other one of
the dampers N are opened. This is of course assuming that the draft through the
direct flue B will overcome the draft through the balance of the flues M.
In cleaning the radiator all the dampers N are opened, so that the ashes contained
in the tubes M will be discharged into the flue B. Q, Q are scrapers attached to the
chain H. P is a weight at one end of the chain. This chain may pass upwards
over a pulley if desired. The scrapers Q are drawn through the flue, and the loose
ashes and soot are discharged through the vertical tube F. The scrapers Q may be
either double or single, and any number may be used. These scrapers may remain
in the flue as the space R above them will be sufficient for the direct draft. . The
scrapers may if desired be arranged upon an endless chain, carried by rollers,
turned by crank, as shown in dotted lines in the Drawing.
This radiator presents a very extended radiating surface; the products of com-
bustion are so cut up and divided that after passing through it but little heat can
be carried to the chimney and lost. The radiator is supported on legs S, inde-

page_text: pendently of any stove or furnace below it, and it is admirably adapted for
economising fuel.
Having described the nature of the said Invention, and the manner of performing
the same, I would observe that I am aware that radiators through which the pro-
ducts of combustion are carred back and forth in a vertical or horizontal direction
are not new, but what I claim as the Invention to be protected by the herein-before
in part recited Letters Patent is,―
1st. The combination with tubes A, J, of tubes M, rising from a continuously
open draft flue B, F, that has a valve near each end, provided with valves N just
above said fluc, and above these valves, connected by cross pipes, all as herein
shown and described, so that all the flues M will empty into a continuous tube,
being thus easily cleaned, and a direct or indirect draft being had as wanted.
2nd. I claim the employment of the scrapers Q, or analogous devices, for the
cleaning of the flues B, substantially as described.
In witness whereof, I, the said Alexander Melville Clark have hereunto set
my hand and seal, this Ninth day of August, in the year of our Lord One
thousand eight hundred and seventy-six.
A. MELVILLE CLARK.