IMPROVEMENTS IN JOB PRINTING PRESSES
Year: 1879

page_text: LETTERS PATENT to Henry Pattman Trueman and John George New, both of
Birmingham, in the County of Warwick, Machinists, for the Invention of
"IMPROVEMENTS IN JOB PRINTING PRESSES."
Sealed the 23rd September 1879, and dated the 1st April 1879.
PROVISIONAL SPECIFICATION left by the said Henry Pattman Trueman and
John George New at the Office of the Commissioners of Patents on the 1st
April 1879.
HENRY PATTMAN TRUEMAN and JOHN GEORGE NEW, both of Birmingham, in the
County of Warwick, Machinists. "IMPROVEMENTS IN JOB PRINTING PRESSES."
This Invention refers to improvements in that class of job printing presses known
as bed and platten machines.
Our improved press is constructed with a horizontal bed to receive the forme of
types, the ink plate being attached at an upward angle of about 80 degrees at the
back of the forme of types: On a vertical line erected from the centre of the type
bed. is pivotted a rectangular frame, one end of which forms a handle, and the other
carries two or more inking rollers. On moving the handle end through an arc of
180 degrees, the rollers are caused to traverse completely across the ink plate and
the forme of types upon the bed. The platten is hung immediately over the bed,
and carried to and from the types in exact parallelism by a system of grooves, which
after the impression is given, causes it to turn upward to receive the paper to be
printed. The impression is produced by a pair of toggle levers connected with the
rectangular frame, and means are provided for altering the intensity of the pressure
at will
The platten is also furnished with automatic frisket arms or grippers for
holding the sheets.
The press is provided with ductor rollers, which distribute ink on the plate but
not on the types. For better distribution the ink plate is caused to revolve by a
ratchet movement. To give easy access to the from for correcting without removal
from the bed, the whole of the upper part of the press is made to turn on a hinge,
so as to completely expose the forme to view.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Henry Pattman Trueman and John George New in the Great Seal
Patent Office on the 30th September 1879.
HENRY PATTMAN TRUEMAN and JOHN GEORGE NEW, both of Birmingham, in the
County of Warwick, Machinists. "IMPROVEMENTS IN JOB PRINTING PRESSES."
This Invention relates to that class of printing presses or machines in which a
swinging platten is used in combination with a fixed or stationary type bed, and it
consists,
First. In the use as a means of operating the platten of a rectangular frame
carrying inking rollers at one end, and formed for use as a lever handle at the other
end; it further consists in the employment of mechanism for inking the type and
apparatus for supplying ink to the ink plate, and also in the use of means whereby
the frisket arms or grippers of the platten are rendered positive in their action
instead of being dependent on the action of springs. Also, in a novel construction
and arrangement of the mechanism, which allows of the forme of type being
completely exposed and free from the working parts without removal from the bed.
We will now proceed to describe the Invention by the aid of the annexed
Drawings, referring by letters to those parts chiefly of the machine which are new,
the remaining the remaining parts being common to other machines of this class,
and shewn in the Drawings merely for the purpose of more clearly illustrating our
Invention.
Fig. 1 is a front elevation of a printing press of the class above named.
Fig. 2, a transverse section.
Fig. 3, a perspective view.
(a) is the horizontal bed of the ordinary description to receive the forme of types,
the ink plate (b) being placed at an upward angle of about 80 degrees at the back
of the forme of types. On a vertical line erected from the centre of the type bed:
is pivotted a rectangular frame (c), one end of which forms a handle, and the other
carries two or more inking rollers. On moving the handle end through an arc of
180 degrees, the rollers are caused to traverse completely across the ink plate and
the forme of types upon the bed. The platten (d) is hung immediately over the
bed, and carried to and from the types in exact parallel line by a system of grooves
(e), which after the impression is given, cause the platten (d) to turn upward to
receive the paper to be printed. The impression is produced by a pair of toggle
levers connected with the rectangular frame (c), and means are provided for altering
the intensity of the pressure at will, such as by the impression screws (f). The
platten (d) is also furnished with automatic frisket arms or grippers (g) for holding
the sheets. The press is provided with ductor rollers (h), which distribute ink on
the plate but not on the types. For better distribution the ink plate is caused to
revolve by a ratchet movement. To give easy access to the forme for correcting
without removal from the bed, the whole of the upper part of the press is made to
turn on a hinge, so as to completely expose the forme to view, as shewn in Figure 3.
The automatic action of the frisket arms is thus obtained. The frisket arms (g) are
connected with a square rod (2) in bearings at the back of the platen (d); on the
rod (j) is a short crank (k), which is connected by the rod (1) with the lever (m),
which has a fulcrum or pivot at (n); one side of the upper portion of the lever (m)
slides in contact with the cam (o), which is fixed immoveably in the shaft (p).
During the vertical motion of the platten the levers (1) and (m) and the crank (k)
remain stationary, but during the swinging portion of the platten motion the lever
(m) is bent in such a way as to allow the frisket arms to open.
The ink duct (h) for supplying the plates is detachably fixed on the top of the

page_text: girder (q), which carries the platten (d). As the girder (g) is moved over little more
than 90 degrees, it is clear on referring to the Drawing, Figure (2), that it can only
travel to the centre of the ink plate and back, and will not touch the type inking
roller or the type. The ink box and its rollers are mounted on flexible springs (r)
to adjust automatically to the ink plate.
To render access to the type easy we make the whole of the upper part of the
press to turn up on a hinge, as seen in Figure (3), or, if preferred, we fix the type
on a sliding tray, which may be run out on ways from under the platten.
Having thus described the nature of our said Invention, and the manner in which
the same is to be carried into effect, we wish it to be understood that we do not
confine ourselves to these precise details, as the same may be varied without
departing from the spirit of the Invention, but we claim,―
Firstly. The application to a printing press of the description herein shewn of a
removeable ink duct mounted on flexible springs, and oscillating to and from the
plate during the operation of the press.
Secondly. We claim the means described whereby the frisket arms or grippers
are rendered positive in their action.
Thirdly. We claim the construction and arrangement of the mechanism which
allows the form of type to be completely exposed and free from the working parts
without removal from the bed.
In witness whereof, we, the said Henry Pattman Trueman and John George
New, have hereunto set our hands and seals, this Twenty ninth day of
September, in the year of our Lord One thousand eight hundred and seventy
nine.
HENRY PATTMAN TRUEMAN. (L.S.)
JOHN GEORGE NEW,
(L.S.)