IMPROVEMENTS IN PRINTING PRESSES
Year: 1877

page_text: LETTERS PATENT to Carlo Giuseppe Squintani, of the City of London, Mer
chant; for the Invention of "IMPROVEMENTS IN PRINTING PRESSES."
Sealed the 7th August 1877, and dated the 14th June 1877.
PROVISIONAL SPECIFICATION left by the said Carlo Giuseppe Squintani
at the Office of the Commissioners of Patents on the 14th June 1877.
CARLO GIUSEPPE SQUINTANI, of the City of London, Merchant.
IN PRINTING PRESSES."
"
IMPROVEMENTS
This Invention consists of improvements in the construction of printing presses;
particularly applicable for "job" printing, the object of the improvements being to
render such presses strong, simple, and clienp, little liable to get out of order, and
easy to work, at the same time that they shall occupy less space than usual.
To carry out my improvements I arrange the platen so that it is operated by a
pin and groove movement in connection with a wheel gearing with a pinion on the
Hly wheel shaft, by wliich arrangement I obtain, firstly, an ample "dwell" on the
impression for setting the ink on the paper; and, secondly, I obtain a feed-rest
which allows ample time for removing the printed sheet, and replacing it with a
fresh sheet:
To obtain a more thorough and even "distribution" than usual, I employ three
rollers, one of which is placed above, and between the other two, so that they
revolve together and manipulate the ink upon and between their surfaces as thoy,
receive it from the revolving ink disc. From this arrangement it will be under-
stööd that during the process of inking the form, as well as when the rollers are in
contact with the disc, a constant distribution is taking place, and the form rollers:
continually present á freshly inked surface to the face of the type.
I also do away with the ordinary side arms, and alter the position of the fly:
wheel, which enables ine to print sheets of almost any size without folding or
wrinkling.
"

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Carlo Giuseppe Squintani in the Great Seal Patent Office on the
13th December 1877.
CARLO GIUSEPPE SQUINTANI, of the City of London, Merchant.
IN PRINTING PRESSES."
"IMPROVEMENTS
This Invention consists of, improvements in the construction of printing presses,
particularly applicable for "job" printing, the object of the improvements being to
render such presses strong, simple, and cheap, little linble to get out of order, and
easy to work, at the same time that they shall occupy. less space. than usual.
The general arrangement and construction of the press is similar to that described
in the Specification of former Letters Patent granted to me, and dated the Tenth day
of April 1877, No. 1400, except that in carrying out my present improvements the
platen is operated by means of a pin and groove movement in combination with a
wheel gearing with a pinion on the fly wheel shaft, driven by a treadle or other-
wise, by which arrangement I obtain, firstly, an ample
" dwell" on the
impression for setting the ink on the paper; and, secondly, I obtain a feed-rest,
which allows ample time for removing the printed sheet, and replacing it with a
fresh sheet.
To obtain a more thorough and even "distribution" than usual, I employ three
rollers, one of which is placed above and between the other two, so that they
revolve together and manipulate the ink upon and between their surfaces, as they
receive it from the revolving ink disc; but I make no claim to this third roller.
From this arrangement it will be understood that during the process of inking the
"forme," as well as when the rollers are in contact with the disc, a constant distri-
bution takes place, and the forme rollers continually present a freshly inked surface
to the face of the type.
I also do away with the ordinary side arms, and alter the position of the fly
wheel, which enables me to print sheets of almost any size without folding or
wrinkling.
But in order to make my Invention better understood I will proceed to describe
the same by reference to the accompanying Drawing, in which Figure 1 is a side
elevation of the improved press in its open or normal position; Figure 2, a similar
view partly in section of the upper part of the press when closed, in the position
whilst taking an impression; Figure 3, a front elevation of part of the press;
Figure 4, perspective view of the improved press.
Similar letters in all the Figures represent similar parts.
a, a, is the iron frame of the press; b, the bed; c, the chase; d, the platen; all
constructed and arranged in a similar manner to that described in the Specification of
my said former Letters Patent, as is also the self-inking mechanism, except that I now
employ a third roller e, which I call the rider roller (but to which I make no claim);
this roller is placed above and between the other two rollers f, g, so. that they
revolve together and manipulate the ink upon and between their surfaces, as they
receive it from the revolving ink disc. From this arrangement it will be under-
stood that during the process of inking the forme, as well as when the rollers are.
in contact with the disc, a constant distribution takes place, and the forme. rollers
continually present a freshly inked surface to the face of the type.
The press is fixed on a table h, supported on a strong iron stand i, i. The platen
d is connected by the knee-jointed lovers j to a shaft or axis k, having its bearings.
in the side frames a, a, of the press; this shaft carries a curved lever or cam
having an endless groove m; against the sides of this groove bears a roller n
(sbewn in dotted lines at Figure 3), turning on the pin or bolt p on the toothed
wheel, the said wheel being carried in the bracket or bearing r, cast with or
fixed to the frame of the press; into this wheel a gears a pinion 8, on the fly wheel
shaft t, having a fly wheel u. The shaft t is driven by the treadle v, connecting
rod w, and crank a, but it may if required be driven by power.

page_text: From this improved arrangement of mechanism for operating the platen it will
be at once seen that the turning of the fly wheel shaft t will cause the roller n, by
the turning of the wheel g, to communicate a rocking or vibrating motion to the
lever, thereby partly turning the shaft k, so as to communicate a to-and-fro motion
to the levers j, and consequently to the platen d, the parts being so arranged as to
allow of an ample "dwell" on the impression for setting the ink on the paper, and
also to obtain a sufficient "feed-rest" to give ample time for removing the printed
sheet and replacing it with a fresh one.
It will be understood that the ordinary side arms of presses worked by treadles
are done away with, and the fly wheel is so placed as not to project above the
platen, thus enabling sheets of almost any size to be printed without folding or
wrinkling.
Having thus described my Invention and the best means with which I am
acquainted for carrying the saine into effect, I wish it to be understood that what
I claim is, the improvements in printing presses, substantially as herein-before
described and represented in the accompanying Drawing.
In witness whereof, I, the said Carlo Giuseppe Squintani, have hereunto set
my hand and seal, this Thirteenth day of December, in the year of our
Lord One thousand eight hundred and seventy-seven.