Improvements in or relating to Wire Annealing and similar Furnaces.
Year: 1897

page_text: Date of Application, 21st July, 1897-Accepted, 4th Sept., 1897
COMPLETE SPECIFICATION.
Improvements in or relating to Wire Annealing and similar
Furnaces.
I, CONRAD HEUCKEN, of 92 Kaiseraller, Aaschen, in the Empire of Germany,
Merchant, 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 :-
This invention relates to wire annealing and similar furnaces in which generator-
gases are used as fuel and any desired number of which can be supplied with gas
from one central station.
The air required for the ignition and combustion of the gases is strongly heated
by passing it through one or several systems of pipes or passages made of metal
or refractory material arranged in the gas-outlet flues of the furnace, and supplying
it to the incoming heating gases. These pipes or passages are surrounded by the
combustion gases passing towards the chimney in a heated condition and thus give
off part of their heat to the air passing through the passages, whereby it becomes
strongly heated before it reaches the gas-burner or furnace.
As the efficiency of a gas-furnace increases as is well known in proportion to the
heat of the air supplied for combustion, this efficiency is very great in the furnaces
of this construction, and the heating period is considerably reduced owing to the
high temperature of combustion, a substantial saving in fuel or gas being thus
effected.
The construction of the furnace will now be explained with reference to the
accompanying drawings in which
Fig. 1 is a sectional elevation and
Fig. 2 a sectional plan.
The gases from the generator pass through a gas-valve v, the furnace-space K,
and from the latter through slots or passages e into the annealing space m.
The air for combustion enters through lateral openings into an annular
passage i, rising ibrough vertical passages f communicating with the latter, into
the air-chamber d and passes from the latter, through pipes or passages c
communicating with it, downwards to the bottom of the heating space where it
meets the gases entering, through the passages e the heating chamber m where
ignition takes place.
The combustion products escape from the heating chamber through the opening a
into the flues h heating in their passage the pipes c placed in these flues, said pipes
giving off this heat to the air passing through them, the products of combustion
finally escaping through the annular passage b communicating with the flues into
the chimney.
Having now particularly described and ascertained the nature of the said inven-
ion and in what manner the same is to be performed I declare that what I
claim is :-
1. A wire annealing or similar furnace characterised by the inlet passages for
the air for combustion being arranged in the outlet passages for the combustion
products anbatantially as described

page_text: 2. The combination and arrangement of parts introducing and heating air in a
furnace substantially as described and illustrated in the accompanying drawings.
Detail ] I.1 1007
BOULT & WADE,
Agents for the Applicant.