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Патент USA US2109808

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March l, 1938.
.
2,109,808
T. TAYLOR
PRINTING MACHINE
Filed ¿une 7, 1957
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March 1,4‘1938.
T. TAYLOR
2,109,808 l
PRINTING MACHINE
Filed June '7, 1937
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arch E, 1938.
T. TAYLOR
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2, ì 09,80
APRINTING MACHINE
Filed June 7, 1937
P7
I5 Sheets-Sheet 5
Patented Mar. 1, 1938
UNITED STATES PATENT (')FFTCEV
2,109,808
PRINTING MACHINE
Tom TaylolgBristol, England,` assigner to The
Thrissell Engineering Company, Limited, Bris
tol, England
Application June 7, 1937, serial No. 146,953
Y
In Great Britain June 12, 1936
10 Claims.
lating to printing machines of the kind having
to permit the inking means to move radially
away from the point about which the support
a forme movable into -and out ofV engagement
moves s‘o that the inking means may move over
with a platen and inking mechanism comprising
and engage the surface of the forme.
One Way of carrying the invention into effect Cn
will be described by way of example with refer
ence to the accompanying drawings in which:-Figure 1 is a side elevation, partly in section,
of a printing press with the forme in the upper
This invention is for improvements in or re
5 an ink container, an ink distributor, means to `
transfer ink from the container to the distribu
tor, inking means to transfer ink from the dis
tributor to a forme, and rolling means disposed
between the means to transfer ink from the con
10 tainer and the inking means to roll the ink on
the surface of the distributor.
In printing machines of the type described it
has previously been proposed to apply ink to a
flat surface on which the ink was rolled and
from which the ink was transferred to the forme.
Machines'constructed in accordance with these
proposals usually occupy a comparatively large
amount of space.
The term “rough ink” when used herein and
in the appended claims means ink which is con
tained inthe ink container vor which has been
removed therefrom but which has not been rolled
so as to make it suitable for application to the
mm
.
(Cl. lOl-_302)
inking means.
According to the invention there is provided
inking mechanism of the type described wherein
the ink distributor comprises a curved surface
arranged to reciprocate between the transfer
means and the inking means in a manner such
position.
10
Figure 2 is a side elevation, partly in section,
showing certain of the parts shown in Figure l
in different positions from the positions in which
they are shown in Figure 1.
Figures ‘3 and 4 show diagrammatically the
manner in 'which ink is spread over the surface
of a` distributor.
Like references refer to like parts throughout
the specification and drawings.
Referring to the drawings, the forme 3 of the
printing machine is carried by a head 4 which
is pivoted at 5 so as to be oscillatable towards
and away from the platen 6 which is positioned
on the bed 'I of the machine. The printing head
is oscillated by means of crank and toggle mech 25
anism, comprising two links 8 and 8a, the former
being pivoted at 9 to the bed 1 of the machine,
and the latter connected at» Ill with the head ¿i
of the machine by a projection I I. A link I2
that the rolling means engages the curved sur
face during the movement of the latter in each
direction for the purpose of spreading the ink
over the curved surface. The extent of recip
rocation' of the curved surface is regulated in a
manner such that that portion of the curved
surface to which. ink is transferred by the trans
fer means is not engaged by the inking means in
order that the inking means shall not receive ink
is connected with the arms 8 and Baß at I3 and
is also connected with a crank I4 which is driven
from the main drive of the machine.
To the‘printing head 4 there is connected the
inking mechanism which comprisesran ink con
tainer I5 and a curved distributing surface I5
which may comprise a cylindrical roller but
support to permit the required engagement be
reason of the fact that the rollers 2U are carried on frames 22 which are secured to rods 23
which is shown in the drawings as an arc of a
circle. The distributing surface is mounted for
from that portion of the curved surface to which - rotation with a shaft I1, the axis of rotation of
“rough” ink is applied by the transfer means.
which isV coincident with the centre of curvature
The curved surface may be rotatable about an of the curved surface I6.
axis coincident with the centre of curvature of
A toothed sector I8 is connected to the dis
the surface and the curved surface may comprise tributing surface I6 and engages with a further
an arc of a circle.
.
toothed sector I9 which is connected with inking
The inking means may be carried by a Vsup
means shown as rollers Ztl'. The inking rollers 45
port movable in an arcuate path, andthe inking 20 are carried by a support ZI and are arranged
means arranged to be movable relatively to the to be movable relatively to the support 2l by
tween the inking means and a forme.
The lrelative movement between the support
and the inking means may be provided by slid
ably mounting the inking means on the support
and controlling said means by a resilient ele
ment or elements, which is or are operative when
CIT 5. the inking means is in engagement with a forme,
slidable in the support 2l and controlled by
springs 24. VThe support 2| is arranged to move
in an arcuate path about a spindle 25 and the
springs 24 control the inking rollers 20 so that
as the support 2l moves through its arcuate path
and the inking rollers 20 engage with the forme 55
2
2,109,808
3 to apply ink thereto, the inking rollers move
relatively to the support in a direction which
is radial to the axis of the spindle 25 about which
the support 2l is moved.
The ink in the ink duct I5 is transferred from
the duct to the surface of the distributor I6 by
a vibrator or messenger roller 26 which is ar
ranged to oscillate between a roller 21 which
engages with the ink in the duct I5 and the sur
face of the distributor I6 as can be seen from
Figure 1. The roller 21 is rotated whilst the
messenger roller 26 is in engagement therewith
by means of a ratchet wheel 28 with which a
pawl 29 mounted on an arm 30 co-operates, the
arm 30 being connected by a link 3I to the sector
I8 which operates the distributor I 6.
A plurality of freely rotatable rollers 32 are
positioned adjacent the surface of the distributor
I6, and are arranged to roll over the surface of
20 the distributor the ink deposited upon the sur
face IS by the messenger roller 2li. As will be
seen from the drawings, the rollers 32 are dis
posed between the transfer roller 25 and the ink
ing means 2D.
The distributing surface I’G is arranged to os
cillate about the axis of the shaft I1 and so trans
fer the ink which has been rolled over the dis
tributor surface by the rollers 32 to the inking
rollers 2B.
30
"
As will be seen from Figure Z, the inking
rollers 20 are arranged to be in position to re
ceive ink from the distributor surface I6 whilst
the forme 3 is co-operating with the platen E.
It will be seen, therefore, that the distributing
35 surface I6 is movable between the transfer means
26 and the inking rollers 20 and in timed rela
tionship with the inking rollers and the arrange
ment is such that the rough ink on the curved
surface of the distributor I6 is engaged only by
40 the rollers 32 during the movement of the dis
tributor in each direction.
In this manner some
at least of the ink which is on the distributing
surface is rolled over the surface of the dis
tributor IE at least twice before it is transferred
to the inking rollers 20, and it is possible to ob
tain a more even film of ink on the distributing
surface I5 than is the case when the distributing
surface is moved in one direction only.
Figures 3 and 4 show the distributing surface
50 in its extreme positions, and as can be seen from
these figures, the ink transferred to the distrib'
uting surface I5 is spread over only a relatively
small area of the surface I‘B, the distance along
the arc formed by the surface I5 being indicated
by the distance S shown in Figures 3 and 4. The
ink transferred to the surface I6 along the dis
tance S is rough ink and the rollers 32 roll the
ink so ‘that it is relatively smooth over the re
mainder of the surface I6. From Figures 3 and
4 it will be seen that the extent of the movement
of the curved surface I6 in the direction of the
inking rollers 2@ is such that the inking rollers 2Q
do not engage with that part of the curved sur
face IG to which rough ink is applied.
'I‘he operation of the inking rollers 2€] and the
distributing surface It is effected in timed re
lationship with the movement of the forme 3
due to the fact `that the spindle 25 previously re
ferred to, and about which the support 2 I moves,
70 is connected with the head 4 of the printing
press. The support 2l is formed as a bell crank
lever, one arm of which supports the inking roll
roller 2l of the inking mechanism is movable in
timed relationship with the movement of the 10
printing head.
A cam (not shown) is connected with the spin
dle 25 and is arranged to operate the messenger
roller 2‘5 so that it transfers ink from the roller
27 to the distributor surface I6 at the required 15
intervals.
What I claim as my invention and desire to
secure by Letters Patent is:
1. In ink applying mechanism for printing ma
chines, the combination with a source of supply
of ink, of an ink distributor having a distribut
ing surface, transfer means for supplying rough
ink from said source to a portion only of said
surface, inking means receiving ink from said
surface, and means for moving said distributor
to cause the distributing surface thereof to en
gage and move over said inking means, the ex
tent of such movement being insuiiîcient to en
gage that portion of the said surface to which
rough ink is supplied.
2. In ink applying mechanism for printing ma
chines, the combination with a source of supply
of ink, of an ink distributor having a distribu
ting surface, transfer means for supplying rough
ink from said source to a portion only of said
surface, inking means receiving ink from said
surface, means for moving said distributor to
cause the distributing surface thereof to engage
>and move over said inking means, the extent of
such movement being insufficient to engage that 40
portion of the said surface to which rough inl:
is supplied, and means cooperating with said dis
tributing surface for spreading the ink thereover.
3. In ink applying mechanism for printing ma
chines, the combination with a source of supply
of ink, of 'an ink distributor having a distrib
uting surface, transfer means for supplying rough
ink from said source to a portion only of said
surface, inking means receiving ink from said
surface, means. for moving said distributor to
cause the distributing surface thereof 'to engage
and move over said inking means, the extent of
such movement being insufficient to engage that
portion of the said surface to which rough ink
is supplied, and roller means positioned adjacent
the path of movement of said distributing means
and engaging the surface thereof to spread the
ink over said surface.
4. In ink applying mechanism for printing ma
chines, the combination with a source of supply
of ink, of an ink distributor having a curved dis
tributing surface, transfer means for supplying
rough ink from said source to a portion only
of said surface, inking means receiving ink from
said surface, and means for imparting oscilla
tory movementI to said distributor to cause the
distributing surface thereof to engage and move
over said inking means, the extent of such move
ment being insufficient to engage that portion of
the said surface to which rough ink is supplied.
5. In ink applying mechanism for printing ma
the other arm being connected with a link
chines, the combination with a source of supply
of ink, of an ink distributor having a curved dis
33 pivoted at 313 to the bed l' of the machine.
The sector I9 also is connected to the spindle
tributing surface, transfer means for supplying
rough ink from said source to a portion only of
ers
75
25 so that as the printing head l! is moved the
support 2i is correspondingly moved and the sec
tor i9 by cc-operation with the sector I8 causes
the distributor i6 to be rotated about the axis
of the shaft I'I, and this movement in turn is
transmitted through the link 3| to the pawl 29
which operates the ratchet 28 and rotates the
roller 2l. It will be seen, therefore, that the
3
2,109,808
said surface, inking means receiving ink from
said surface, means> for imparting oscillatory
movement to said distributor to cause the dis
tributing surface thereof to engage and move
over said inking means, the extent of such move
ment being insufficient to engage that portion of
the said surface to which rough ink is supplied,
and means cooperating with said distributing
surface for spreading the ink thereover.
6. In ink applying mechanism for printing ma
10
chines, the combination with a source of sup
ply of ink, of an ink distributor having a curved
distributing’surface, transfer means for supply
ing rough ink from said source to a portion only
15 of said surface, inking means receiving ink from
said surface, means for imparting oscillatory
movement to said distributor to cause the dis
tributing surface thereof to engage and move
over said inking means, the extent of such move
20 ment being insufficient to engage that portion of
the said surface to which rough ink is supplied,
and roller means positioned adjacent the path of
movement of said distributing means and en
gaging the surface thereof to spread the ink
over said surface.
7. In ink applying mechanism for printing
presses ofthe type provided with cooperating,
relatively movable form and platen members,
the combination with a source of supply of ink,
30 of an ink distributor having a distributing sur
face, transfer means for supplying rough ink
from said source to a portion only of said sur
face, inking means receiving ink from said sur
face, said inking means being supported for
35 movement into engagement with and over the
active face of said form to apply ink thereto, and
means for moving said distributor to cause the
distributing surface thereof to engage and move
over said inking means While the latter is out
40 of engagement With said form, the extent of such
movement being insu?icient to engage that por~
tion of the said surface to Which rough ink is
supplied.
face, said inlring means being suppgorted for
movement into engagement with and over the
active face of said form to apply ink thereto,
and means for moving said distributor to cause
the distributing surface thereof to engage and 5
move over said inking means While the latter is
out of Vengagement with said form, the extent
of such movement being insufficient to engage
that portion of the said surface to which rough
ink is supplied, said inking means including ink
receiving rollers and means yieldingly urging said
rollers into engagement with said form and said
distributing surface.
9. In ink applying mechanism for printing
presses of the type provided with cooperating, 15
relatively movable form and platen members, the
combination with a source of supply of ink, of
an ink distributor having a curved distributing
surface, transfer means for supplying rough ink
from said source to a- portion only of said sur
20
face, inking means receiving ink from said sur
face, said inking means being supported for move
ment into engagement with and over the active
face of said form to apply ink thereto, means for
imparting oscillatory movement to said distribu 25
tor to cause the distributing surface thereof to
engage and move over said inking means While
the latter is out of engagement with said form,
the extent of such movement being insufficient
to engage that portion of the said surface to 30
which rough ink is supplied, and-means cooperat
ing With said distributing surface for spreading
the ink thereover.
10. In ink applying mechanism for printing
machines, the combination with a source of sup 35
ply of ink, of an ink distributor having a gen
erally cylindrical distributing surface, transfer
means for supplying rough ink from said source
to a portion only of said surface, inking means
receiving ink from saidsurface, rollers supported 40
for engagement with said surface to spreadthe
ink thereover, and means for oscillating said dis~
Vtributor about the axis of said surface to cause
the latter to move over said inking means and
said spreading rollers, the range of movement 45
of said'distributor being insufficient to Contact
the combination with a source of supply of ink, said inking means with the said portion of said
of an ink distributor having a distributing sur~
surface supplied with rough ink, said spreading
8. In ink applying mechanism for printing
45 presses of the type provided with cooperating,
relatively movable form and platen members,
face, transfer means for supplying rough ink
rollers being disposed intermediate said inking
from said source to a portion only of said sur
face, inking means receiving ink from said sur-
means and said transfer means.
TOM TAYLOR.
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