Improved Smoke Consuming Apparatus for Locomotive and other Boilers.
Year: 1895

page_text: Date of Application, 8th June, 1895--Accepted, 13th July, 1895.
COMPLETE SPECIFICATION.
Improved Smoke Consuming Apparatus for Locomotive and other
Boilers.
I. ALBERT SILBERMANN, Manufacturer of 74 Blumenstrasse, Berlin, Germany,
do hereby declare the nature of my invention and in what manner the same is
performed to be particularly described and ascertained in and by the following
statement :-
The object of the present invention is to provide an apparatus whereby the smoke
generated by steam boilers is consumed by the boiler fire, and thus considerable
saving in fuel attained.
In order to attain this object the chimney of the boiler is connected by means of
a pipe of suitable section with the firebox, suitable exit for the surplus combustion
gases being provided for through a throttle valve, which may act automatically or
be operated by the engine driver.
The device may be applied to any locomotive or other boiler without altering the
construction of the same, and without causing any very great extra expense.
And in order to make the present Specification more easily intelligible reference
is had to the accompanying drawing in which the device is shown in side sectional
elevation.
According to the drawing a pipe connection b extends from the front upper part
of the chimney downwards under and along the boiler and enters the firebox, the
ends of the said pipe connection being enlarged at the chimney and firebox ends.
The pipe may also be provided with a removeable piece b' at the front part to
enable easy access to the interior of the same and to the boiler for the purpose of
cleaning the same. In the boiler chimney above the point at which the pipe b
branches off from the same, a sieve d is provided which may be closed by means of
a valve e said valve being hinged to the chimney a in suitable manner and operated
by a cord or chain from the engine room. When the pressure of the combustion
gases exceeds a certain limit the valve will be operated by the same automatically.
Instead of taking the said pipe connection from the front of the chimney the
same may extend from the sides of the same in two channels one from each side,
said two pipes being united again under the body of the boiler in any suitable
manner.
The apparatus operates in the following manner :-
The smoke and sparks which hitherto escaped at the chimney are conducted by
the pipe b back to the firebox and there consumed by the aid of the air draught
drawn in through the grate by the fire. Any surplus pressure of combustion gases
escaping at the valve c. The sieve d will however prevent the escape of smoke and
sparks, whilst the escape of the combustion gases can be regulated by means of the
valve c.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is performed I declare that what I
claim is :-
1. In a locomotive or other boiler, the combination of a pipe 6 extending from
the chimney to the firebox and means for regulating the exit of combustion gases
from the said chimney in the manuer and for the purpose substantially as

page_text: 2. In combination with a boiler the pipe extending from the chimney to the
firebox and a sieve d in the chimney above the point of communication of said pipe
with the chimney and a valve c to cover said sieve and means for operating said
valve substantially as described.
3. The combination of a pipe b extending from the chimney of a boiler to the
firebox and having its ends enlarged at the points of junction with the chimney and
firebox, a removeable front piece to said pipe and means in the chimney for
regulating the exit of surplus combustion gases in the manner and for the purpose
substantially as described and shown.
Dated this 8th day of June 1895
BOULT & WADE,
Agents for the Applicant.