Improvements in Tin Plate Furnaces.
Year: 1896

page_text: Date of Application, 1st Aug., 1896-Accepted, 19th Sept., 1896
COMPLETE SPECIFICATION.
Improvements in Tin Plate Furnaces.
I, LOUIS ALBRECHT, Civil Engineer, of 25 Kampenstrasse, Siegen, West-
phalia, in the Empire of Germany, 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 tin plate furnaces hitherto used, having a massive raised furnace sole in a
combined plate heating furnace, possess the disadvantage that the tin plate heating
end which lies under the sole of the plate furnace, remains quite black during the
heating process and is not sufficiently heated, since the flames always pass direct
towards the back part of the tin plate furnace, underneath, & do not sufficiently
heat the front part of the said furnace.
This great disadvantage is avoided in a positive manner by the effectuation of
special heat apertures in the sole of the plate furnace and at the same time a
method of regulating the flames is obtained.
On the accompanying drawing the new construction of plate furnace with flame
regulating apertures is represented, in which :-
Fig. 1 is a longitudinal section, Figs. 2 and 3 are cross sections, and Fig. 4 is a
ground plan.
It consists of three or more solidly built arched ties a, with the intermediate
heating apertures b, on which are arranged the raised ribs c for carrying plates p
and made of fire resisting material and firmly built in with the arch ties a. At
the back end of this furnace there are on both longitudinal sides of the furnace
other projections d to enable the last plate s to be raised up as shown by the dotted
lines, whereby the direct draught of Hame towards the back over the furnace sole
into the tin plate heating furnace behind v, is at once checked as required. A side
inspecting tube f underneath the door of the plate furnace enables the heated tin
plate t to be inspected from outside at its front end at t.
When this new plate furnace is to be used, the plates p are laid on the carrying
ribs c and the whole surface of the furnace is covered therewith, whilst the tin
plate vt for heating to redness is laid in the tin plate beating furnace situated
underneath.
The flames produced on the grate z then pass over the fire bridge e through the
plate furnace directly backwards into the lower tin plate furnace and they quickly
heat, not only the plates p, but also the back end of the tin plate in the tin plate
furnace. As now the plates lying immediately behind the fire bridge è are
naturally heated first, they are the first ones to be withdrawn for rolling. The
first left hand row of heat apertures 6 are then open and the flames then pass in
the direction of the arrow, (see longitudinal section) through these apertures into
the lower front part of the tin plate furnace and play with intense heat on the still
black tin end t. The state of heat of the front part of the tin plate to can be
observed through the inspection hole f and the effect of the flames through the
first row of heating apertures 6 can be considerably increased by the last plate
being raised into the dotted position against the side projections d d whereby the
draught section at the back part of the plate furnace is decreased by two thirds
and the flames are obliged to pass through the plates p and also through the heat
apertures bb directly downwards so that the front end of the tin plate at t is also
as equally heated in a short time as the back end of the tin plate from backwards.
The furnace attendant is now perfectly enabled, by the arrangement of the plate

page_text: furnace sole provided with heating apertures to regulate as desired the flame effect
necessary for the equal heating of the tin plate tv to be heated to redness, by
the novel manipulation, of the plates p laid on the plate furnace sole, and with the
avoidance of any loss of heat from the tin plate furnace; as the opening of the
large doors to the tin plate furnace is rendered unnecessary on inspection. By this
arrangement also an entirely new and expedited process of working is attained for
heating the plates and also for equally heating the tin plates in the furnace for
raising them to a red heat.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is:
1. The form of construction of a raised plate furnace sole for combined plate
and tin plate red-hot heating furnace, with heating apertures or openings in the
sole of the plate furnace, for the purpose of obtaining the regulation of the flames
for both furnaces by the manipulation of the plates to be heated.
2. The arrangement and construction of tin plate furnaces, substantially as
described with reference to the drawings.
ני
T1 10ne
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.