Improvements in Apparatus for Stereotyping.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Stereotyping.
I, JULES MICHAUD, of 96, Rue d'Assas, Paris, France, Engineer, do hereby
declare the nature of this invention to be as follows:-
The object of my invention is to obtain a more rapid and at the same time a
more economical 'drying of the impression or matrix taken from the printing
matter or forme, and which is to serve for obtaining cliches, which are to be a
reproduction of such forme.
Hitherto the processes the most employed for drying the matrix have been the
following:
1st. The matrix while remaining applied to the printing matter and pressed
thereto, the printing matter itself is caused to rest on a plate heated either by hot
gases proceeding from the furnace itself of the foundry, such gases resulting from
the combustion of the combustible employed for heating the furnace, or by light-
ing gas, or by steam.
2nd. The matrix being detached from the printing matter is dried separately,
without the printing matter being heated. For this purpose the matrix is placed
either in a stove heated in any suitable manner, or upon a bed of sand heated by
lighting gas or by steam.
The means first indicated, that is the drying of the matrix in contact with the
printing matter, and heating the latter by hot gases proceeding from the foundry
furnace, has had to be abandoned on account of the difficulty of regulating exactly
the degree of heat imparted to the plate carrying the forme, the consequence of
which often was the fusion of the latter, by reason of the plate being heated to
too high a temperature.
This process was the most economical, but by reason of its disadvantages it was
necessary to substitute the heating by gas or by steam.
For the drying of the matrix detached from the forme a bed of sand or other
materials in powder was generally employed in a metallic dish heated by gas or
by steam.
My invention consists in the combination of the dish containing the bed of sand
or other material in powder with the furnace of the foundry, so that the hot gases
proceeding from the furnace serve to heat the metallic dish and its contents.
I construct the furnace so that it supports a dish having below a hollow part,
in which I can cause the hot gases proceeding from the furnace to pass, so as by
the aid of these gases to heat the materials employed for the drying of the matrix.
I may also construct the furnace so that this dish may be connected to the
furnace by a set of tubes.
The intensity of the heating of the dish is regulated by means of cocks, enabling
larger or smaller passage to be left for the hot gases proceeding from the furnace.
Dated this 3rd day of June 1897.
ALLISON BROS.,
Agents for the Applicant.

page_text: Improvements in Apparatus for Stereotyping.
I, JULES MICHAUD, of 96, Rue d'Assas, Paris, France, Engineer, do hereby
declare the nature of this invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
The object of my invention is to obtain a more rapid and at the same time a
more economical drying of the impression or matrix taken from the printing
matter or forme, and which is to serve for obtaining cliches, which are to be a
reproduction of such forme.
Hitherto the processes most employed for drying the matrix have been the
following:
1st. The matrix while remaining applied to the printing matter and pressed
thereto, the printing matter itself is caused to rest on a plate heated either by hot
gases proceeding from the furnace itself of the foundry, such gases resulting from
the combustion of the fuel employed for heating the furnace, or by lighting gas,
or by steam.
2nd. The matrix being detached from the printing matter is dried separately,
without the printing matter being heated. For this purpose the matrix is placed
either in a stove heated in any suitable manner, or upon a bed of sand heated by
lighting gas or by steam.
The means first indicated, that is the drying of the matrix in contact with the
printing matter, and heating the latter by hot gases proceeding from the foundry
furnace, has had to be abandoned on account of the difficulty of regulating exactly
the degree of heat imparted to the plate carrying the forme, the consequence of
which often was the fusion of the latter, by reason of the plate being heated to too
high a temperature.
This process was the most economical, but by reason of its disadvantages it was
necessary to substitute the heating by gas or by steam.
For the drying of the matrix detached from the forme a bed of sand or other
materials in powder was generally employed in a metallic dish or tray heated by
gas or by steam.
My invention consists in the combination of the dish or tray containing the bed
of sand or other material in powder with the furnace of the foundry, so that the
hot gases proceeding from the furnace serve to heat the metallic dish and its
contents.
I construct the furnace so that it supports a dish or tray having below a hollow
part, in which I can cause the hot gases proceeding from the furnace to pass, so
as by the aid of these gases to heat the materials employed for the drying of the
matrix.
I may also construct the furnace so that this dish or tray may be connected to
the furnace by a set of tubes.
The intensity of the heating of the dish or tray is regulated by means of dampers
enabling a larger or smaller passage to be left for the hot gases proceeding from
the furnace.
In the accompanying drawings,
Fig. 1 is a vertical section of a suitable arrangement for carrying my invention
into effect in which the foundry furnace is connected to the tray or dish containing
the sand by tubes, and the lower part of which is made hollow for the passage of
the hot gases.

page_text: The gases issue from the furnace at 1. The tray or dish is divided into two
parts by a partition 10 so that the gases entering at 2, travel round to 3 in following
the path indicated by the arrow, and escape at 4 into the vertical chimney. If the
damper 5 is closed the gases pass directly to the chimney without heating the dish
or tray and its bed of sand or powder 7. The damper 5 also serves to regulate the
heat of the tray or dish.
The damper 11 regulates the draught in the chimney.
Fig. 3 is a vertical section, and Fig. 4 a plan view of an arrangement in which
the heating dish or tray 8 forms part of the upper part of the furnace 9.
The arrangements shown and described only indicate suitable methods in which
the invention may be carried into effect, and same may be varied according to
requirements.
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:-
The combination of the foundry furnace in use, heated by any fuel, with the dish
or tray containing the sand or other materials employed for the drying of the
matrices, this dish or tray being heated by the hot gases resulting from the com-
bustion of the fuel employed for the heating of the furnace.
Dated this 14th day of February 1898.
ALLISON BROS.,
Agents for the Applicant.