Systems of Pipes.
Year: 1887

page_text: Systems of Pipes.
I, HERBERT JOHN ALLISON, of 52 Chancery Lane, London, in the county of
Middlesex, Patent Agent, do hereby declare the nature of this invention, which has
been communicated to me from abroad by Walter Morton Brown and Samuel
Warren Whitmore, both of Albany, in the State of New York, United States of
America, both Attorneys at Law, and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement :-
Figure 1 is a side elevation of a system of heating-pipes, with my arrangement of
gas-pipes and hoods.
Figure 2 is a transverse section of the same at the line X X.
Figure 3 is an enlarged transverse section of a heating-pipe, gas-pipe and hood
showing the manner of securing the latter.
Figure 4 is an enlarged perspective view of the hood, showing the openings in the
top of the latter for the escape of the products of combustion: and
Figure 5 is a perspective view of the clamp for securing the hood to the heating-
pipe.
This invention relates to an improvement in heating coils and systems of pipes by
the use of gas or other inflammable vapor as a fuel; and it consists in combining
with each heating-pipe a gas-pipe and a hood; the said gas-pipe being perforated to
permit a number of gas jets to burn directly under the heating-pipe, and the hood
being placed directly above each heating-pipe so as to cause the flame and heated
products of combustion to either wholly or partially surround the heating-pipe, and
to retain said flame and products of combustion in contact with said heating-pipe for
the longest practical space of time.
As represented in the drawings A indicates a system of heating-pipes arranged in
what is commonly known as a flat-coil; underlying each pipe of the system of heating-
pipes is a corresponding gas-pipe, B, which is provided, on its upper side, with a
series of burners or perforations, 1, so that the flame of the burning gas will impinge
against the lower side of the heating-pipes and then, by dividing, surround said
pipes.

page_text: C is a hood made in the form of an inverted trough and fixed directly over cach
of the heating-pipes, so that the lower edges of said hood will extend below the centre
line of each pipo; in the upper part of said hood a series of openings, 2, is formed
for the purpose of permitting the escape of the products of combustion from the under
side of said hood.
D is a clamping-device for securing the hoods C to the heating-pipes; said clamping-
device consists of a hoop that is open at the lower side and is there provided with
lugs, 3, through which a screw-bolt, 4, is inserted to draw the hoop snugly around
the heating-pipe; on the upper side of the clamping-device there is a socket, 5,
secured; said socket being of such length as to fix the hood C at the required distance
from the top of the heating-pipe; a rivet, 6, which passes through the bore of the
socket, secures the clamping-device to the hood C.
The hood C is preferably made of sheet-metal in the form shown in Fig. 3, and,
preferably, has a lining, 7, of asbestos, or other material that is a good non-conductor
of heat, but said hood may be made of any suitable refractory material.
This invention operates in the following manner: The gas or other inflammable
vapor issuing from the burners or perforations in the gas-pipe B is ignited, and the
flame and other heated products of combustion produced thereby impinge upon and
are carried completely around the heating-pipes the hood C confining the heated
products of combustion in close contact with the entire circumference of said heating-
pipes until the spent products of combustion escape through the openings 2 in the
top of the hood C, and in this manner the most, if not all, of the heat produced by
the burning gas is utilized in heating the pipes.
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 system of heating-pipes, in combination with a gas-pipe, or
system of pipes, provided with burners for heating said coil or system of heating-pipes,
and a hood arranged above said heating-pipes and burners in order that the heat from
the latter may be concentrated on the former substantially as specified.
2. A perforated arched hood, in combination with a heating-coil or system of
heating-pipes arranged below said hood, and a gas-pipe and burners discharging
below said hood for heating said coil or heating-pipes, substantially as set forth.
3. The combination of a heating-coil or system of heating-pipes, a hood arranged
above said coil or pipes, a clamping-device for securing said hood to said heating-
pipes, and burners discharging under said hood; the latter being perforated to allow
the escape of the products of combustion substantially as set forth.
4. The combination of a heating-coil or a system of heating-pipes, having burners
discharging under the same, and an arched hood arranged above said heating-pipes;
said hood being protected by asbestos, or other non-conductor of heat, and perforated
to allow the escape of the products of combustion, substantially as set forth.
5. A hood substantially as described, in combination with an imperforate coil
arranged below the same, burners which heat said coil, a clamping-device for securing
said hood to said coil, and a socket interposed between said hood and clamping-device
for supporting said hood clear from said coil, substantially as set forth.
Dated this 7th day of November 1887.
ALLISON BROS.,
Agents for the Applicant.