Im- PROVEMENTS IN PRESSES FOR EMBOSSING AND PRINTING, AND IN THE MODE OF WORKING THE SAME
Year: 1872

page_text: LETTERS PATENT to William Oarwood, of Queen Street, Finsbury,
in the County of Middlesex, Engineer, for the Invention of "Im-
PROVEMENTS IN PRESSES FOR EMBOSSING AND PRINTING, AND IN THE MODE
OF WORKING THE SAME."
"
Sealed the 25th March 1873, and dated the 4th October 1872.
PROVISIONAL SPECIFICATION left by the said William Carwood at
the Office of the Commissioners of Patents, with his Petition, on the
4th October 1872.
I, WILLIAM CARWOOD, of Queen Street, Finsbury, in the County of
5 Middlesex, Engineer, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN PRESSES FOR EMBOSSING AND PRINTING, AND IN THE
MODE OF WORKING THE SAME," to be as follows:-
The object of this Invention is to avoid the great loss of time which
occurs in the working of embossing and printing presses used by book-
binders and others, in which the engraved plate serves first as an
embossing plate, and subsequently as a printing plate. In working
these presses as embossing presses it is necessary to heat the heater box
attached to the metal head of the press, and carrying the embossing
plate, and thereby to impart heat to that plate, heat being requisite to
' ensure a sharp and lasting impression.

page_text: leave it several hours to cool down before it is ready for the printing
operation. After some seven or eight hours the printing may be com-
menced, the suspended and inverted plate being inked on its engraved
face, and the covers being brought up into contact therewith, so that
the embossed lines or devices may receive the colour imparted to the
printed surface. The head of the press is usually heated by gas jets,
suitable burners being applied to transverse openings cast in the
heater box.
I now propose, as an improvement on embossing and printing presses,
to core out transverse channels in the cast-iron heater box, and to
connect these together at their opposite ends by ducts, so as to form a
serpentine or zig-zag passage through the heater box, but so as not to
interfere with the openings for the gas burners. The opposite ends of
this zig-zag passage I connect with pipes, one of which I lead down
from a water cistern, and the other I use as a discharge pipe. By this
means I am enabled, immediately the embossing work is completed, to
pass a stream of cold water through the heated box, and thereby to cool
it down while the workman is preparing for the printing operation.
When heating the press by steam I avail myself of the steam space
for the circulation of cooling water through the beater box, and I supply
the steam and water connections with suitable taps for effecting the
cut-off of the one and supply of the other medium, either simultaneously
otherwise.
In the accompanying Drawing Fig. 1 represents an elevation of an
embossing press with my improvements adapted thereto; Fig. 2 is a 2
sectional plan view of the same. a, a, is the heater box which is
adjusted in position by means of the screws and nuts a', a'; b, b, are gas
pipes provided with jets, and are introduced into the long square recesses
or holes made in the box, and are then made to heat the box. The book
covers or other work to be operated upon are placed on the table c, c, up 3
to a proper gauge, and to this table a rising and falling motion is com-
municated in order to bring the work up against the pressing or em-
bossing plate, which is temporarily secured to the heater box a in the
well-known manner. When the requisite number of impressions has
been taken the heater box is cooled down by causing cold water to run 3
from any convenient cistern through the pipe d into the zig-zag
channels e, e, Fig. 2, and indicated by dots in Fig. 1. The water, after
passing along these channels, escapes by the exit pipe f into any con-

page_text: year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto me, the said William Carwood, Her
special licence that I, the said William Carwood, my executors,
administrators, and assigns, or such others as I, the said William Car-
wood, my executors, administrators, and assigns, should at any time
agree with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"IMPROVEMENTS IN PRESSES FOR EMBOSSING AND PRINTING, AND IN THE MODE OF
WORKING THE SAME," upon the condition (amongst others) that I,
the said William Carwood, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that I, the said William Carwood, do hereby
declare the nature of my said Invention, and in what manner the same
is to be performed, to be particularly described and ascertained in and
by the following statement, reference being had to the Drawing here-
unto annexed, and to the letters and figures marked thercon (that is to
say):
The object of this Invention of "Improvements in Presses for Em-
bossing and Printing, and in the Mode of Working the same," is to
avoid the great loss of time which occurs in the working of embossing
and printing presses used by bookbinders and others, in which the
engraved plate serves first as an embossing plate, and subsequently as a
printing plate. In working these presses as embossing presses it is
necessary to heat the heater box attached to the metal head of the press,
and carrying the embossing plate, and thereby to impart heat to that
plate, heat being requisite to ensure a sharp and lasting impression.
When a given number of book or other covers (say a thousand) has
been embossed by the ascending table (or it may be the descending
heater box) bringing the covers one by one into close contact with the
heated engraved plate, it is necessary to stop the action of the press, and

page_text: leave it several hours to cool down before it is ready for the printing
operation. After some seven or eight hours the printing may be com-
menced, the suspended and inverted plate being inked on its engraved
face, and the covers being brought up into contact therewith, so that
the embossed lines or devices may receive the colour imparted to the
printed surface. The bead of the press is usually heated by gas jets,
suitable burners being applied to transverse openings cast in the
heater box.
I now propose, as an improvement on embossing and printing presses,
to core out transverse channels in the cast-iron heater box, and to
connect these together at their opposite ends by ducts, so as to form a
serpentine or zig-zag passage through the heater box, but so as not to
interfere with the openings for the gas burners. The opposite ends of
this zig-zag passage I connect with pipes, one of which I lead down
from a water cistern, and the other I use as a discharge pipe. By this
means I am enabled, immediately the embossing work is completed, to
pass a stream of cold water through the heated box, and thereby to cool
it down while the workman is preparing for the printing operation.
When heating the press by steam I avail myself of the steam space
for the circulation of cooling water through the heater box, and I supply
the steam and water connections with suitable taps for effecting the
cut-off of the one and supply of the other medium, either simultaneously
otherwise.
In the accompanying Drawing Fig. 1 represents an elevation of an
embossing press with my improvements adapted thereto; Fig. 2 is a a
sectional plan view of the same. a, a, is the heater box which is
adjusted in position by means of the screws and nuts a¹, a'; b, b, are gas
pipes provided with jets, and are introduced into the long square recesses
or holes made in the box, and are then made to heat the box. The book
covers or other work to be operated upon are placed on the table c, c, up 3
to a proper gauge, and to this table a rising and falling motion is com-
municated in order to bring the work up against the pressing or em-
bossing plate, which is temporarily secured to the heater box a in tho
well-known manner. When the requisite number of impressions has
been taken the heater box is cooled down by causing cold water to run 3
from any convenient cistern through the pipe d into the zig-zag
channels e, e, Fig. 2, and indicated by dots in Fig. 1. The water, after
passing along these channels, escapes by the exit pipe finto any con-

page_text: venient receptacle, and by its passage through the heater box quickly
reduces the temperature of the same.
Fig. 3 is a longitudinal vertical section, and Fig. 4 is a horizontal
section of a heater box which is intended to be heated by steam, hot air,
or hot water. The channels for the passage of these fluids are so
arranged as to allow of the circulation of the same through the box in
order to impart heat to the plate attached thereto. When heat is no
longer required, and it is desired to cool down the box a, cold water is
passed through the channels or passages, and the temperature of the
plate and box is quickly reduced. In other words, the steam, hot air, or
hot water is admitted through the pipe d to the zig-zag channels e, e, to
heat the box a, and when the heating is to be discontinued, the supply
of hot air, steam, or hot water is cut off, and a stream of cold water is
run from the same pipe d through the zig-zag channels or passages e, e,
and out at the exit pipe f', as in the former instance.
Having now set forth the nature of my Invention of " Improvements
in Presses for Embossing and Printing, and in the Mode of Working the
same," and having explained the manner of carrying the same into
effect, I wish it to be understood that I claim as the Invention secured
to me by Letters Patent as aforesaid,―
First. Constructing the heater boxes of presses which are to be heated
with gas in the manner and for the purpose above described with
reference to Figures 1 and 2..
Secondly. Cooling the heater box of bookbinders' embossing and
printing presses by causing a stream of cold water to pass through the
same, as herein set forth.
In witness whereof, I, the said William Carwood, have hereunto
set my hand and seal, the Third day of April, in the year of
our Lord One thousand eight hundred and seventy-three.