Iм- PROVEMENTS IN LITHOGRAPHIC AND CHROMO-LITHOGRAPHIC PRESSES
Year: 1859

page_text: LETTERS PATENT to Richard Archibald Brooman, of 166, Fleet Street,
in the City of London, E.C., Patent Agent, for the Invention of "Iм-
PROVEMENTS IN LITHOGRAPHIC AND CHROMO-LITHOGRAPHIC PRESSES."- A com-
munication from abroad by Jean Théodore Dupuy, of Paris.
PROVISIONAL SPECIFICATION left by the said Richard Archibald Brooman
at the Office of the Commissioners of Patents, with his Petition, on
the 30th June 1859.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of
London, E.C., Patent Agent, do hereby declare the nature of the said Inven-
tion for "IMPROVEMENTS IN LITHOGRAPHIC AND CHROMO-LITHOGRAPHIC PRESSES,"
(communicated to me from abroad by Jean Théodore Dupuy, of Paris,)
to be as follows:-
The object of this Invention is the production in a given time of a greater
number of impressions than can be produced in presses as ordinarily con-
structed. The main features of the Invention are, 1st, to produce in a given
motion of a crank, a double course of the table of the press, and 2nd, the
arrangement of points or guides, whereby several colors can be made to
register" accurately. These guides facilitate the correctly fixing of the
stones as often as may be necessary to replace them, and whatever may be

page_text: their number. In order to obtain a double course of the table of the press, it
is supported on wheels or rollers, and carries a rack on the under side, a
toothed wheel connected by a rod to a crank or to a wheel to which rotary
motion is imparted, takes into the rack on the table, and also into a similar
fixed rack supported on or above the floor. The cylinder holding the paper
on which the impression is to be made is provided with a clip, governed by
springs and rollers acted upon by the revolution of the cylinder in such
manner that immediately on the impression being produced, the clip releases
the paper, and opens to receive another sheet of paper, which after being
printed it releases, and so on. The "
The "register" guides consist of points
inserted in arms pivoted on a stud affixed to the frame of the press. These
points indicate the correct "register," and are pivoted over clear of the
stones, so as not to interfere with their being placed and removal when
necessary. Guides for obtaining correct register in an opposite direction to
that of the points, are provided with hinges to allow of their being removed
out of the way of the stones while being laid or removed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Richard Archibald Brooman in the Great Seal Patent
Office on the 30th December 1859.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, RICHARD
ARCHIBALD BROOMAN, of 166, Fleet Street, in the City of London, E.C.,
Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of June, in the year of our Lord
One thousand eight hundred and fifty-nine, in the twenty-third year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me, the
said Richard Archibald Brooman, Her special licence that I, the said Richard
Archibald Brooman, my executors, administrators, and assigns, or such
others as I, the said Richard Archibald Brooman, my executors, adminis-
trators, 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 Inven-
tion for "IMPROVEMENTS IN LITHOGRAPHIC AND CHROMO-LITHOGRAPHIC PRESSES,"
(a communication from abroad by Jean Théodore Dupuy, of Paris,) upon
the condition (amongst others) that I, the said Richard Archibald Brooman,

page_text: 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 Richard Archibald Brooman, do hereby
declare the nature of the said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement thereof, reference being had to the Drawings hereunto
annexed, that is to say:-
"
The object of this Invention is the production in a given time of a greater
number of impressions than can be produced in presses as ordinarily con-
structed. The main features of the Invention are, 1st, to produce in a given
motion of a crank a double course of the table of the press, and 2nd, the
arrangem of points or guides whereby several colors can be made to
register" accurately. These guides facilitate the correctly fixing of the
stones as often as may be necessary to replace them, and whatever may be
their number. In order to obtain a double course of the table of the press, it
is supported on wheels or rollers, and carries a rack on the under side; a
toothed wheel connected by a rod to a crank or to a wheel to which rotary
motion is imparted, takes into the, rack on the table and also into a similar
fixed rack supported on or above the floor. The cylinder holding the paper
on which the impression is to be made, is provided with a clip governed by
springs and rollers acted upon by the revolution of the cylinder in such
manner that immediately on the impression being produced, the. clip releases
the paper and opens to receive another sheet of paper, which after being
printed it releases, and so on. The "register" guides .consist of points
inserted in arms pivoted on a stud affixed to the frame of the press. Theso
points indicate the correct "register," and are pivoted over clear of the stones,
so as not to interfere with their being placed and removed when necessary.
Guides for obtaining correct register in an opposite direction to that of the
points, are provided with hinges to allow of their being removed out of the
way of the stones while being laid or removed. Figures 1, 2 and 3, of the
accompanying Drawings, illustrate in longitudinal elevation a lithographic
press, constructed according to this Invention, and show the three different
positions the table of the press assumes. Figure 1, shewing the table in its
central position; Figure 2, shewing the same at the extreme left, and
Figure 3, shewing the table at the extreme right of its course; Figure 4 is a

page_text: transverse section of the press, through the line A, B, of Figure 1; Figures 5;
6 and 7, shew the manner of "pointing" or "registering" the lithographic
stones; Figure 7 bis shows part, in detail, on a larger scale, and Figures 8,
9 and 10, are different views of parts of the cylinder on which the to
paper
receive an impression is placed. The machine is put in motion by a pulley or
crank keyed to the shaft of a pinion E, which pinion gears into a driving
wheel F, which carries a crank M. This crank can be connected either to
the shaft of the wheel, or to an arm, or to the rim of the wheel; it is jointed
to a connecting rod D, through which a rotary motion is communicated to the
pinion B. This pinion B gears into two horizontal racks G, G¹, one, G¹, of
which is fixed and attached to the frame C¹ of the machine, whilst the other.
rack G, is free to move. In order that the shaft of the pinion B may be
constantly guided in a horizontal to-and-fro direction, it is caused to move in
lubricated guides 9, 9', in such manner that the movable rack G advances.
and retires sufficiently to allow the lithographic stone to pass beneath the
roller S, far enough to produce the desired impression on the paper. This
roller S is drawn in detail at Figures 8, 9 and 10. The paper is held by a
clip or gripper T, which is attached to a rod a, furnished with two or more
projections 6 (Figure 8), against which come springs c, c, as well as other
projections d, d, which are constantly in contact with levers e, fixed to the
shaft f; the ends of this shaft f are provided with arms g, each terminating
in a small roller e¹. These rollers come in contact with a circular disc f¹,
which has a part of its circumference cut away. When the rollers e¹ are in
contact with the disc f, the levers e and the springs c press against the pro-
jections b, d, of the paper clip or gripper, but as soon as the rollers e' leave
the disc the rod a turns, which depresses the levers e, as well as the springs,
which consequently no longer press upon or against the projections d, b, and
so allow the paper clip to rise at the proper time, that is, when the sheet of
paper has received its impression. The mechanism which raises the paper
clip consists of a roller g', which follows the course of the eccentric h³, which,
when it arrives at the top or upper part of the eccentric, imparts a rocking
motion to the rod a, on which the paper clip is fixed. The rollers e¹ press the
levers e, on the projections d, and the springs c against the projections b, and
the other of these rollers allows the same lever and springs to leave the paper
clip, which is released through the action of the roller g', in combination with
the eccentric h¹. The roller g¹, and the eccentric h³, are placed at each end
of the cylinder S, which is only shewn in part at Figure 8. The "pointing"
or "registering" of the lithographic stones is effected by means of points k, k¹,
Figures 5, 6 and 7, which points are pivoted at J, and can be thrown back on.

page_text: the lithographic stone as indicated by the lines M, N, or outside of the stones,
in order that the points shall not be in the way when it is desired to remove
the stones. The points occupy the position indicated by the dotted lines.
R, R', are the hinges about which the points turn in the other direction; one
of these hinges is shown on a larger scale at Figure 7 bis
And having now described the nature of the said Invention, and in what
manner the same is to be performed, I declare that I claim, first, the con-
struction of lithographic or chromo-lithographic presses in such manner that
by a motion of the crank a double course of the table of the press is produced,
as herein-before described and illustrated in the accompanying Drawings.
Second, the arrangement of points or guides in order to facilitate the printing
in colors, together with the method of rendering the stones stationary, all as
herein-before described and illustrated in the accompanying Drawings.
In witness whereof, I, the said Richard Archibald Brooman, have here-
unto set my hand and seal, this Thirtieth day of December, One
thousand eight hundred and fifty-nine.
R. A. BROOMAN. (L.S.)