Improved Process for the Production of Matrices from Type.
Year: 1891

page_text: Date of Application, 1st June, 1391
Complete Specification Left, 29th Feb., 1892-Accepted, 2nd Apr., 1892
PROVISIONAL SPECIFICATION.
Improved Process for the Production of Matrices from Type.
We, JAMES STURROCK, of Seacraig, Cashier, Dundee Advertiser Office, and
GEORGE DUNCAN MACDOUGALD, of 3 Youngsdale Place, Analytical Chemist,
both of Newport, in the County of Fife, N.B. do hereby declare the nature of
this invention to be as follows:-
This invention which relates to an improved process for the production of
matrices from type, has for its object to dry the matrix while in contact with the
type in an improved manner and by means of improved apparatus.
In carrying out our invention, we pass a current or currents of air at a suitable
temperature around, or about the matrix while it is in contact with the type; the
air on its exit carrying with it the moisture from the said matrix.
While the current of air is depriving the matrix of its moisture, heat may also
be supplied to the back or front of the said matrix, or to both simultaneously.
Dated this 29th day of May 1891.
GEO. C. DOUGLAS & Co.,
Applicants' Agents.
COMPLETE SPECIFICATION.
Improved Process for the Production of Matrices from Type.
We, JAMES STURROCK, of Seacraig, Cashier, Dundee Advertiser Office, and
GEORGE DUNCAN MACDOUGALD, of 3 Youngsdale Place, Analytical Chemist,
both of Newport, in the County of Fife, N.B. 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 which relates to an improved process for the production of
matrices from type, has for its object to dry the matrix while in contact with the
type in an improved manner and by means of improved apparatus.
In carrying out our invention, we pass a current or currents of air at a suitable
temperature around, or about the matrix while it is in contact with the type; the
air on its exit carrying with it the moisture from the said matrix.
While the current of air is depriving the matrix of its moisture, heat may also
be supplied to the back or front of the said matrix, or to both simultaneously.
The accompanying sheets of explanatory drawings illustrate the method of
carrying out our invention.
Figures 1. and 2. (Sheet 1.) represent respectively sectional elevations of the
furnace and the hot press, Figure 3. a section of a modification of the hot press,
and Figure 4. a section at c. c. of the flexible or jointed pipe.
Figure 5. (Sheet 2.) represents a plan looking on B. B. (Figure 2.) and Figure 6..
a sectional plan of the furnace at A. A. (Figure 1.).
In these drawings the same reference numerals are used to mark the same or like.
parts wherever they are repeated.
DESCRIPTION OF THE DRAWINGS.
7. is the furnace in which the air for drying the matrices is heated, 8. being a.
10. is the fuel door and
lining of fireclay kept in position by the projections 9.
11. a catch for keeping it closed when required. 12. is a flexible or jointed pipe
for conducting the heated air to the hot plate 13. 14. is the chimney for use when
i Pored1

page_text: 19. are
connection to the hot plate is not established; said chimney being fitted with a
damper or shut off valve, not shown in the drawings. 15. is the pipe from the fan,
and 16. the ash-hole door. 17. is an ordinary hot press, as commonly used; the
hot plate 13. being attached to it as shown, by means of the clamps 18.
branch pipes connected with the pipe 12. and provided with a series of holes 20, to
allow of the hot air escaping into the chamber 21. and from thence through the
holes 22. to the matrix 23. 24. are the types, which may, or may not be heated by
means of the hot press plate 25. The holes 22. in the hot plate 13. are grouped
together as shown, the cross lines 26. being gutters or channels for allowing the hot
air to be distributed more equally.
The apparatus according to one modification is used in the following manner :-
Burning fuel is placed in the furnace 7. the doors 10. and 16. then being closed.
Air from the fan is introduced through the pipe 15. and the fire is blown up; the
waste gases escaping through 14. When the fire is in proper condition the damper
of the chimney 14. is closed, the heated air from the fan passing through the pipe 12.
to the branches 19. and from thence through the holes 22. until the plate 13. is
thoroughly heated. In the meantime the matrix 23. has been prepared in the usual
manner, and when all is ready the types with the matrix are transferred to the hot
press: When these are in position the hot plate 13. is pressed down upon it by
means of the screw 27. and hand wheel 28. The matrix will now be quickly dried
by the hot air passing over it, and if need be, aided by the heat of the hot press 25,
conducted through the types 24.
In a second modification the hot air may be introduced on both sides of the
natrix the hot press being supplied with hot air as the chamber 21. is; said hot
press being constructed as shown in Figure 3.
In a third modification the hot air may only be supplied through the bottom
plate of the hot press, the top chamber 21. not being used.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same to be performed, we declare that what we
claim is :-
In the improved process for the production of matrices from type :-
(1) The passing of a current or currents of air at a suitable temperature around
or about the matrix, while it is in contact with the type.
(2) The construction and arrangement of parts for passing heated air over the
matrix while it is in contact with the type, as hereinbefore described in our first
modification.
(3) The construction and arrangement of parts for passing heated air around or
about the matrix while it is in contact with the type, as described in our second
modification.
(4) The construction and arrangement of parts for passing heated air to the
underside of the matrix, as described in our third modification.
(5) The furnace for heating the air, substantially as hereinbefore described with
reference to Figures 1. and 6.
Dated this 25th day of February 1892.
GEO. C. DOUGLAS & Co.,
41, Reform Street, Dundee, Agents for Applicants