Improvements in or connected with Printing Machines.
Year: 1893

page_text: te of Application, 28th Feb., 1893-Accepted, 8th Apr., 1893
COMPLETE SPECIFICATION.
[Communicated from abroad by Messrs. R. HOE & COMPANY, of 504, Grand
Street, in the City of New York, United States of America, Printing Machine
Manufacturers.]
Improvements in or connected with Printing Machines.
I HENRY EDWARD NEWTON of the Office for Patents, 6 Bream's Buildings,
Chancery Lane in the County of London, Patent Agent 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 refers to improvements in or connected with printing machines,
and especially relates to providing an efficient inking mechanism, which shall be
more simple and compact than those heretofore in use.
In carrying out this invention, a cylinder is employed having a segmental inking
surface by which the form is inked, either directly, or through the usual form
rolls or
equivalent devices, and a segmental distributing surface receiving the ink
from the ink supply, this distributing surface being on a different portion of the
cylinder from the inking surface, and not engaged by the form, form rolls, or other
ink-receiving devices, so that the cylinder has independent inking and distributing
surfaces, as distinguished from those constructions of inking mechanism in which
the same surface is used both as the receiving and distributing surface and the
inking surface, these independent inking and distributing surfaces being arranged
circumferentially of the cylinder, so that the ink may be transferred to the inking
surface from the distributing surface by a roll engaging both surfaces in succession
as the cylinder rotates.
With this construction of inking and distributing cylinder, any suitable device
may be used for supplying ink to the distributing surface of the cylinder, but
preferably combined therewith is a vibrating transfer roll, which engages only the
distributing surface of the inking and distributing cylinder, and the usual inter-
mittently rotated fountain roll, from which the transfer roll from which the
transfer roll receives its ink. Mechanism is provided by which these parts are
actuated from the inking and distributing cylinder through simple connections.
For a full understanding of this invention, a detailed description of a simple
construction, embodying the same in its preferred form, will now be given, and
the features forming the invention specifically pointed out in the claims.
Referring now to the accompanying drawings forming a part of this
Specification,
Fig. 1 is a side elevation of a simple printing machine with an inking mechanism
embodying my improvements.
Fig. 2 is a plan view of the same.
Figs. 3 and 4 are diagrammatic sections taken inside the frame, and showing the
parts in different positions.
Fig. 5 is a rear end elevation of the inking mechanism.
Fig. 6 is a perspective of roll G, and
Fig. 7 shows a modification.
In the drawings, A is the frame of the machine, in which is mounted the type
cylinder B and impression cylinder B, the type cylinder B carrying the form or
type plate 1. In the frame A, is mounted a cylinder D, forming an inking and
distributing cylinder, this cylinder being provided with the segmental inking pad 2,
forming an inking surface, the surface of the cylinder not occupied by the pad
forming a distributing surface 3. The pad is shown as applied so that the inking
surface 2 is higher than the distributing surface 3, and this construction is
preferable, as avoiding all danger of the distributing surface engaging the type
plate or type cylinder during its rotation, even though the type plate be level with,

page_text: or raised but slightly above, the type cylinder, and the inking surface be brought
opposite the distributing surface, but it will be understood that this construction
is not essential, but that the inking and distributing surfaces may be of the same
height, and the proper distance between the distributing surface and type cylinder
be secured in any other suitable manner.
In the construction illustrated in which the type plate 1 is shown as raised above
the level of the type cylinder B, it is evident that the inking pad 2 may be placed
level with the surface of cylinder D, the cylinders B D being brought closer
together, so that the type plate will engage the inking pad, the parts being so
timed, as shown, so that the type plate brought opposite and in position to
engage the inking pad at each second revolution of the latter, and at no time comes
opposite the distributing surface 3. With the inking pad raised above the surface
of cylinder D, as shown, it is evident that the type plate 1 may be level with the
surface of cylinder B.
This cylinder is shown as mounted so that the inking pad 2 engages the type
form 1, and the ink is delivered directly thereto, and the three cylinders B, C, D
are geared together, so that they are driven directly from a single source of power.
It will be understood, however, that the usual form rolls may be employed between
the cylinder D and type cylinder B, if desired, in which case, the form rolls will
be mounted to engage the inking surface 2 and type form 1, but not the distributing
surface 3, as shown in Fig. 7, in which a construction of printing machine
employing form rolls N is illustrated. The cylinder D is shown as one half the
size of the type cylinder B, so that the inking pad engages the type form only at
each second revolution of the former, and this construction is preferable, as a
better distribution of ink is obtained, but it will be understood that this construction
is not essential.
The ink is distributed upon the distributing surface 3 of the cylinder D, and
transferred therefrom to the inking surface 2 by a roll E, which is preferably
mounted, as shown, in arms F, carried by sleeves 4, loose upon the shaft G, and
spring-pressed by means of springs 8, so that the roll E is held against the
distributing surface 3, and yields against the pressure of the spring 8, to allow the
roll to pass over the raised inking surface 2. The springs 8 are carried by sleeves 5
adjustably secured upon the shaft I, by means of set screws 6, so that the pressure
of the springs may be adjusted as desired.
The ink may be applied to the distributing surface 2 of the cylinder D in any
suitable manner, but it is preferable to use the common construction of an inter-
mittently rotating fountain roll, & in order to prevent the engagement of the
transfer roll with the inking surface 2, and secure the proper movements of the
transfer and fountain rolls, the following construction is provided.
The transfer roll K is carried by arms L mounted loosely, by means of the
sleeves 7, upon the rod G, these arms L being spring-pressed by springs 18, so as
to hold the transfer roll K normally in engagement with the distributing surface 3,
and the springs 18 being preferably adjustably mounted on shaft I by the sleeves 9
and set screws 10, as in the case of springs 8. The cylinder D is provided, at one
end, with a plate 11, opposite the inking surface 2, and projecting outside the same,
which plate engages the transfer roll K while the inking surface 2 is opposite the
transfer roll, and depresses the arms L against the pressure of springs 18, so as to
hold the transfer roll out of engagement with the inking surface, the transfer roll
being raised by the springs 18, so as to re-engage the distributing surface, when
released by the plate 11. For vibrating the transfer roll, so as to receive a supply
of ink, the transfer roll is provided, at one end, in line with the projecting plate 11,
with a projection 12, which is engaged by the plate 11 at certain revolutions of
the transfer roll and cylinder, so as to depress the transfer roll sufficiently to
engage with the fountain roll. In place of the plate 11 on cylinder D, it is evident
that a plate or disc on transfer roll K engaging the edge of the inking pad, or
a plate of the same height as the pad, inay be used, this disc carrying the
projection 12.

page_text: The ink supply for the transfer roll may be of any suitable form. As shown, it
consists of a fountain and fountain roll, as usual in similar constructions of printing
machines. The fountain roll M is mounted in the fountain N below the transfer
roll, and is provided with the usual ratchet wheel 13, for securing its rotation, to
bring a fresh inking surface opposite the transfer roll. A doctor 14, adjustable by
means of the segment 15, and worm shaft 16, is shown, but this is immaterial, so
far as the present invention is concerned. For the purpose of rotating the fountain
roll M, one of the arms L, carrying the transfer roll K, is extended beyond the
transfer roll, and carries a spring pressed pawl 17 adapted to engage the ratchet
wheel 13, on the depression of arms L, by engagement of the plate 11 and
projection 12, so as to secure the rotation of the fountain roll simultaneously with
the depression of the transfer roll K into engagement with the same.
The operation of the devices will be understood from a brief description in
connection with the drawings.
In the position shown in Figs. 1 and 3, the type form has just been inked by
the inking surface 2, and the inking surface is just about to receive a fresh supply
of ink from the roll E, the distributing surface 3 being in engagement with, and
receiving ink from, the transfer roll K, this supply of ink being transferred to the
inking surface 2 on the next revolution of the cylinder.
In the position shown in Fig. 4, the cylinder D has made one complete revolution
from the position shown in Fig. 3, and is on the second revolution, the inking
surface 2 having received ink twice from the roll E, and the type form 1 being just
about to receive a fresh supply of ink from the inking surface. The roll E has
just passed off the inking surface, and is in engagement with the distributing
surface 3, from which it receives the fresh supply of ink to be transferred to the
inking surface on the next revolution of the cylinder, the roll being held in contact
with the distributing surface by the springs 8. The projecting plate 11, opposite
the inking surface 1, is in engagement with the transfer roll K, and the latter is
depressed thereby, so as to be held out of engagement with the cylinder D until the
inking surface has passed the roll.
The transfer roll K is not brought into engagement with the fountain roll M,
nor is the pawl 17 actuated to rotate the fountain roll on every depression of the
transfer roll K by engagement of the plate 11 with the roll. At certain revolutions
of the cylinder, however, it will be seen that the plate 11 comes in contact with the
projection lug 12, so that the arms L are further depressed against the tension of
springs 18, and the transfer roll is carried into contact with the fountain roll, to
receive a fresh supply of ink therefrom, the pawl 17 simultaneously engaging the
ratchet 13, and rotating the fountain roll, to bring a freshly-inked portion of its
surface into position for engagement with the transfer roll at its next depression.
It will be understood that this invention is not limited to the exact, construction
shown, as many modifications may be made therein, without departing from the
nature of the invention.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, as communicated to me
from abroad, I declare that what I claim is :-
1. The combination with a cylinder having a segmental inking surface and an
independent segmental distributing surface, of ink-receiving devices, said cylinder
and ink-receiving devices being constructed and arranged so that the ink-receiving
devices engage the inking surface, but not the distributing surface, and a roll
engaging both the inking and distributing surfaces, substantially as described.
2. The combination with a cylinder having a segmental inking surface and an
independent segmental distributing surface, of ink-receiving devices, said cylinder
and ink receiving devices being constructed and arranged so that the ink receiving
devices engage the inking surface but not the distributing surface, a roll engaging
both inking and distributing surfaces, and means for supplying ink to the dis-
tributing surface, substantially as described.

page_text: 3. The combination with a cylinder having independent segmental ink and dis-
tributing surfaces, the distributing surface being of less height than the inking
surface, of a spring-pressed roll engaging both the inking and distributing surfaces,
and a roll engaging and supplying ink to the distributing surface, substantially as
described.
4. The combination with a cylinder having independent segmental inking and
distributing surfaces, of ink-receiving devices, said cylinder and inking devices
being constructed and arranged so that the ink-receiving devices engage the inking
surface, but not the distributing surface, a roll engaging both the inking and
distributing surfaces, a roll engaging and supplying ink to the distributing surface,
and means for moving said roll out of position, to engage the inking surface,
substantially as described.
5. The combination with a cylinder having independent segmental inking and
distributing surfaces, and having a projection opposite the inking surface, of ink-
receiving devices, said cylinder and ink-receiving devices being constructed and
arranged so that the ink-receiving devices engage the inking surface, but not the
distributing surface, a roll engaging both the inking and distributing surfaces, and
a roll engaging and supplying ink to the distributing surface, and moved out of
engagement with the inking surface by engagement with the projection on the
cylinder, substantially as described.
6. The combination with a cylinder having independent segmental inking and
distributing surfaces, of ink-receiving devices, said cylinder and ink-receiving
devices being constructed and arranged so that the ink-receiving devices engage
the inking surface, but not the distributing surface, a roll engaging both the inking
and distributing surfaces, an ink supply, a vibrating transfer roll engaging and
supplying ink to the distributing surface, and means for moving the roll out of
engagement with the inking surface, and into contact with the ink supply, sub-
stantially as described.
7. The combination with a cylinder having independent segmental inking and
distributing surfaces, and a projection opposite the inking surface, of ink-receiving
devices, said cylinder and ink-receiving devices being constructed and arranged so
that the ink-receiving devices engage the inking surface, but not the distributing
surface, a roll engaging both the inking and distributing surfaces, an ink supply,
and a vibrating transfer roll engaging and supplying ink to the distributing surface,
but moved cut of position to engage the inking surface by the projection on the
cylinder, said transfer roll having a projection adapted to be engaged by the pro-
jection on the cylinder, for moving the transfer roll into contact with the ink
supply, substantially as described.
8. The combination with a cylinder having independent segmental inking and
distributing surfaces, and a projection opposite the inking surface, of ink-receiving
devices, said cylinder and ink receiving devices being constructed and arranged so
that the ink-receiving devices engage the inking surface, but not the distributing
surface, a roll engaging both the inking and distributing surfaces, a fountain and
fountain roll having a ratchet, spring pressed pivoted arms carrying a pawl adapted
to engage the ratchet on the depression of the arms, a transfer roll carried by said
arms, and engaging the distributing surface, but moved out of contact with the
inking surface by said projection on the cylinder, said transfer roll being provided
with a projection adapted to be engaged by the projection on the cylinder at
certain revolutions of the transfer roll, whereby the arms are depressed to carry
the transfer roll into contact with the fountain roll, and to rotate the latter,
substantially as described.
1002
NEWTON & SON,
Agents for the Applicant.