Improvements in Smoke Consumers for Locomotive Boilers.
Year: 1886

page_text: Improvements in Smoke Consumers for Locomotive Boilers.
We, CHRISTOPH ZACHARIAS and HERMANN ZACHARIAS of III Löwengasse
25 Vienna, Austria, Engineers, 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:—
The smoke consumer which forms the subject of this invention, essentially
consists of two air supply pipes or tubes, arranged beneath both longitudinal
borders of the grate, thence extending upward through its rearmost portion,
running up the lateral sides of the fire-box along a zigzag line, and ending in a
sort of chest or box fixed to the rear-side of the fire-box, above the fire-door. The
said chest or box is provided with a horizontal slot, through which the air, highly
heated while passing through the series of tubes, streams into the fire-box and
thereby supplies the fire with heated oxygen.
In the annexed sheet of drawings, Fig. 1 is a sectional side elevation of part of a
locomotive shewing the fire-box provided with the improved smoke-consumer.
Fig. 2 is a horizontal section on line y, y Fig. 1, and Fig. 3 a vertical section
on line a Fig. 1.
As clearly shown in the said Figures, a range of flat pipes a is arranged at either
lateral side of the fire-box, these ranges of pipes beginning beneath the grate b,
and extending several times forward and backward. Both ranges of flat pipes a
are connected by their upper ends to a chest or box c fixed to the rear-side of the
fire-box, above the fire-door d; the said box c extends horizontally across the
whole rear-side of the fire-box, and it is provided with a horizontal slot c',
the edges of which are formed into lips having a downward_direction.
The open lower ends of both ranges of pipes a are by preference directed forward
and provided with shut off flap valves mounted on a common shaft g, which is
adapted to be partly rotated in either direction by means of a system h of cranks
and connecting rods; it is obvious that by altering the position of the shaft g the
supply of hot air to the flame can be controlled.
With the above described arrangement, the prevailing draught will constantly
cause a current of air to pass through the beated pipes a into the chest c whence
a sheet or layer of hot air will continuously stream into the fire, and burn the
imperfectly oxidized gases as well as the small particles of carbon carried along by
the draught.

page_text: Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed we declare that what we claim as
respects smoke consumers for locomotive boilers is —
•
1st. The combination with the locomotive fire-box of two ranges of zigzag pipes,
fixed to the lateral sides of the fire-box and extending up from under the grate to
the top portion of the fire-box, and of a chest or box, fixed to the rear side of the
fire-box, above the fire-door, and having a horizontal slot with downwardly directed
lips, the said chest or box extending crosswise over the whole width of the rear-
side of the fire-box and communicating with both ranges of pipes, substantially as
and for the purpose set forth.
2nd. The combination with the locomotive fire-box of two ranges of zigzag
pipes, fixed to the lateral sides of the fire-box and having their open forward
directed lower ends located beneath the grate, and of a box arranged above the
fire-door and having a horizontal slot with lips having a downward direction the
said box communicating with both ranges of pipes substantially as and for
the purpose set forth.
Brd. In a smoke consumer for locomotive boilers, the combination with two
ranges of air ducts beginning under the grate and extending up along the lateral
sides of the fire-box, of a hot air emitting box, arranged above the fire-door, com-
municating with both ranges of pipes and having eduction openings, which face
the inner space of the fire-box, and of flap valves controlling the lower openings of
the two ranges of pipes, and connected to a common regulating gearing, substantially
as and for the purpose set forth.