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Патент USA US3027843

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April 3, 1962
F. A. FOUSER
3,027,833
SYSTEM FOR PRINT SIZE CONTROL IN PROOF PRESSES
4 Sheets-Sheet 1
Filed March 6, 1959
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JR
Fred ,4. Fouser
April 3, 1962
F. A. FOUSER
3,02 7,833
SYSTEM FOR PRINT SIZE CONTROL IN PROOF PRESSES
4 Sheets-Sheet 2
Filed March 6, 1959
151222214471"
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Fred A. Fouser
“z”! @“k?g;
April 3, 1962
F. A. FOUSER
3,027,833
SYSTEM FOR PRINT SIZE CONTROL IN PROOF PRESSES
Filed March 6, 1959
4 Sheets-Sheet 3
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Eran-[0r
Ffea’ A . Fo user
April 3, 1962
F. A. FOUSER
3,027,833
SYSTEM FOR PRINT SIZE CONTROL IN PROOF PRESSES
Filed March 6, 1959
4 Sheets-Sheet 4
Fred I A. F'o'user
United States Patent C)
‘3,027,833
..
lC€
Patented Apr. 3, 1962
2
1
According to this invention, the sheet bed is moved
in a direction parallel to the movement of the carriage
3,027,833
during engagement of the blanket cylinder with the sheet
SYSTEM FOR PRINT SIZE CONTROL IN
carried by the sheet bed. With this very simple system, it
PROOF PRESSES
is found to be possible to obtain very accurate registration
Fred A. Fouser, Chicago, 11]., assignor to Vandercook &
Sons, Inc., Chicago, 111., a corporation of Delaware
of images. To explain this result, it is important to con
Filed Mar. 6, 1959, Ser. No. 797,774
sider certain aspects of the printing operation.
8 Claims. (Cl. 101——_252)
When the blanket cylinder is rolled over the printing
plate, it picks up the ink image and also picks up mois
This invention relates to proof presses and more par
ticularly to offset proof presses; Such presses are adapted 10 ture from the non-printing areas of the plate. When the
cylinder is then rolled over the sheet, the moisture is
to use a printing plate which is chemically processed to
transferred thereto along with the ink. At the same time,
form moisture-receptive non-printing areas and non
a certain amount of pressure is applied to the sheet. The
moisture receptive printing areas corresponding to the
combination of pressure and moisture may result in length
image to be reproduced. Moisture is ?rst applied over
the surface of the plate to be retained in non-printing 15 ening of the paper in the direction of movement of the
carriage. As the paper dries, it may shrink to a certain
areas thereof after which ink is applied to be repelled
extent, depending upon the composition thereof, and after
from the moistened areas and retained by the non-mois
it is dry it may have a length equal to its original length
tened printing areas and thereby form an image on the
but, in most cases, it will have a length which is either
plate.
greater or less than the original length.
It is found that this stretching or shrinking of the
paper is predominantly in the direction of movement of
the blanket cylinder over the sheet and comparatively
After inking of the plate, a blanket cylinder having a
resilient surface of rubber or the like is rolled over the
plate to effect transfer of the image from the plate to
the cylinder. The cylinder is then rolled over the sheet
of paper to transfer the image thereto.‘
In the construction of such presses, the blanket cylin
der and dampening and inking rollers are mounted on
a carriage reciprocable over spaced stationary beds which
carry the plate and the sheet to be printed, with means
being provided to control'engagement of the cylinder and
rollers with the plate and sheet.
In the use of such presses, it is often times desirable to
little change in size occurs in a transverse direction.
25'
By moving the sheet in a direction parallel to the direc
tion of movement of the carriage in a subsequent print
ing operation, in accordance with this invention, it is pos
sible to precisely compensate for the lengthening or short
ening of the sheet. For example, if the sheet has been
it is necessary to lengthen the image in a
so lengthened,
‘subsequent printing operation. To do so, the sheet bed
is moved in a direction opposite to the direction of move
imprint more than one image on a single sheet. For
ment of the carriage.
example, it may be desired to imprint an image in one
It should be noted that means are provided for ?xing
color on the sheet and then superimpose another image in
the
amount of rotation of the blanket cylinder relative to
another color. To do so, a number of sheets, perhaps a 35
its
linear
movement along the bed. For example, a gear
hundred or so, may be imprinted with an image in one
on the cylinder may mesh with a rack on the frame of
color. The plate is then removed and replaced by a
plate formed with the image for the other color and the
inking roller system is cleaned and set up for the other
the press. It might seem that movement of the sheet bed
might produce blurring of the image under such condi
In practice, however, it is found that the blanket
cylinder surface is sufficiently resilient, and the movement
sheet bed and imprinted with the image in the other
of the sheet bed is. sufficiently gradual, to prevent any
color.
observable blurring action.
In such multi-image printing, it has been found to be
A speci?c feature of the invention is in the provision
extremely dif?cult and often times impossible to obtain
registration of the images over the entire printing area 45 of a comparatively simple and very reliable mechanism
for effecting the required movement of the sheet bed.
of the sheet. For example, if the sheets are so posi
Another feature is in the provision of readily operated
tioned as to obtain registration of the images on one edge
means for quickly adjusting the amount of movement of
portion of the printing area, the images may be offset
the sheet bed.
to a substantial extent on the opposite edge portion. It
This invention contemplates other objects, features and
has usually been the practice to attempt to obtain regis
advantages which will become more fully apparent from
ration in the central portion of the sheet, or in the por
the following detailed description taken in conjunction
tion in which registration of the images is most critical,
with the accompanying drawings which illustrate a pre
and then allow mis-registration of the images in other
portions of the sheets. Various methods of attempting
ferred embodiment and in which:
to obtain registration have heretofore been proposed, but 55
FIGURE 1 is a side elevational view of a proof press
no known satisfactory solution has heretofore existed.
constructed according to the principles of this invention;
This invention, accordingly, was evolved with the ob
FIGURE 2 is a top plan view of the press of FIG
ject of providing an improved proof press system in which
URE 1;
color.
The sheets are then placed one by one on the 40 tions.
accurate registration of images is possible.
FIGURE 3 is a side elevational view, on an enlarged
Another object is to provide a system of accurate im 60 scale, of the carriage of the press of FIGURES 1 and 2,
age registration using a very simple and reliable mecha
the relationship of FIGURE 3 to FIGURE 2 being indi
nism.
cated by arrows III—III in FIGURE 2;
A further object is to provide a proof press system
' FIGURE 4 is a side elevational view, on an enlarged
utilizing a‘ mechanism which is readily and quickly ad
65 scale, of a portion of the stationary part of the press, the
justed to obtain accurate image registration.
3
3,027,833
4
relationship of FIGURE 4 to FIGURE 2 being indicated
by arrows IV—IV in FIGURE 2;
frame to control the vertical position of the blanket
cylinder 20.
In the operation of a mechanism as thus far described,
FIGURE 5 is a side elevational view, on an enlarged
scale, illustrating the side of the carriage opposite that
movement of the roller 32 results in rotation of the sector
shown in FIGURE 3, the relationship of FIGURE 5 to
FIGURE 2 being indicated by arrows V—-V in FIG
URE 2; and
gear 29 in a counter-‘clockwise direction as viewed in
FIGURE 3, to rotate the gear 27 together with the crank
arm 26 in a clockwise direction, to move the link 25 up
‘
FIGURE 16 is a sectional view taken substantially
wardly and rotate the arm 24 in a clockwise direction,
along line VI——VI of FIGURE 5.
to lower the blanket cylinder 20. Accordingly, move
Reference numeral 10 generally designates a printing 10 ment of the roller 32 upwardly causes movement of the
press according to the principles of this invention. The
blanket cylinder 20 downwardly.
press 10 comprises a carriage 11 mounted on an elon
Referring now to FIGURE 1, when the carriage is in
gated frame 12 for reciprocable movement. As illus
the rearward position as illustrated, the roller 32 is posi
trated in FIGURES l and 2, the carriage 11 is at the
tioned below the lower surface of a horizontal bar 33
left-hand end of the frame 12, hereinafter referred to as 15 affixed to the side of the frame 12. When the carriage
the rear or rearward end. The carriage 11 is movable
is moved forwardly to a position such that the blanket
forwardly, to the right as viewed in FIGURES 1 and 2,.
cylinder is disposed adjacent the left-hand or rearward
to successively pass a plate bed 13 and a sheet bed 14
edge of the plate bed 13, the roller 32 engages the upper
supported in spaced relation in the frame 12. After
surface of a cam 34 to cause the roller 32 to move up
reaching the front or forward end of the machine, the 20 wardly and to cause the blanket cylinder to move down
right-hand end as illustrated in FIGURES 1 and 2, the
wardly to engage a plate on the plate bed 13. With
carriage is moved back to the initial rearward position
further movement in the forward direction, the roiler 32
as illustrated. This movement of the carriage is prefer
rides over the upper surface of a horizontal bar 35 and
ably e?ected through a motor drive arrangement, not
thence over the upper surface of a control cam 36 and
illustrated, of a type known in the art, although it could
thence over the upper surface of another horizontal bar
be effected by hand.
37, the roller ‘32 being thus maintained in‘ an elevated
' Iournalled on the carriage 11 are a dampening roller
position, to maintain the blanket cylinder 2t) in a lowered
15, four inking rollers 16, 17, 18 and 19, and a blanket
position for engagement with a sheet on the sheet bed 14.
cylinder 20. The blanket cylinder preferably has a re
When the blanket cylinder 20 reaches the forward end
silient surface of rubber or the like. In the normal 30 of the sheet bed, the roller 32 engages the lower surface of
printing operation of the machine, the carriage moves
"a cam plate 38 to cause the roller 32 to‘ move downward
forwardly, to the right as illustrated in FIGURES 1 and
ly and thus raise or trip the blanket cylinder to an ele
2, and the dampening roller 15 is engaged with a plate
vated position. At this time, the roller engages the
on a plate bed 13 to apply moisture thereto. This mois
ture is retained by moisture-receptive non-image areas of
the plate. The plate is then engaged successively by the
inking rollers 16-19, the ink being retained on non
moistened image areas of the plate. The plate is then
engaged by the blanket cylinder, to cause transfer of the
image from the plate to the surface of the cylinder.
35
upper surface of a control cam 39 to pivot the same
downwardly against the action of a spring, not shown,
acting thereon. At the completion of the forward move
ment, the roller 32 is in a downward position, with the
blanket cylinder 20 being elevated or tripped, and the
control cam 39 is returned to the position as illustrated
Upon reaching the sheet bed, the dampening roller 15
through the action of the spring means acting thereon.
When the carriage is then moved in the rearward di
and the inking rollers 16-19 are tripped upwardly so as
not to engage a sheet on the bed 14. The blanket cylin
der, however, engages a sheet on the bed 14 to transfer
under the plate 37, then under another control cam 40
adjacent the cam 36, then under the bar 35, and then
rection, the cam roller 32 moves under the cam 39,
the image thereto. After reaching the right-hand front 45 engages the lower surface of the control cam 34 to move
or forward end of the machine, the carriage is moved
back toward the initial rear position as illustrated and
the same upwardly against the action of a spring, not
shown, acting thereon, the roller 32 then moving under
during this movement, the blanket cylinder 20 and the
the bar 33 to the initial position. Thus on return move
inking rollers 16-19 are tripped upwardly so as not to
ment, the blanket cylinder is maintained in a tripped or
engage either the sheet on the bed 14 or the plate on the 50 elevated position, so as not to engage either a sheet or a
bed 13.
The dampening roller 15, however, may be
lowered to engage the plate on the bed 13, to maintain
plate.
The above~described control of the blanket cylinder 29
is that used in a normal printing operation. In certain
moisture in the moisture-receptive areas of the plate.
When the carriage is returned to the initial rearward 55 circumstances, and particularly when initially setting up
and adjusting the operation of the machine, it is desirable
position as illustrated, water is applied to the dampening
to prevent engagement of the blanket cylinder 20 with
roller 15 and ink is applied to the inking rollers 16-19 in
either or both the plate or the sheet, during forward
preparation for the next cycle of operation.
movement7
and to cause engagement of the blanket cyl
It should be noted that the amount of angular rotation
inder 20 with either or both the plate or the sheet on
of the blanket cylinder 20 relative to linear movement of 60 rearward movement. For this purpose, the control cams
the carriage 11 is ?xed by means of a gear 21 on the
34, 36, 39 and v40 may be manually controlled to obtain
cylinder 20 which meshes with a rack 22 formed in one
upper side portion of the frame 12.
Referring to FIGURE 3, the blanket cylinder 20 is
any of such operations as may be desired.
Somewhat similar means are provided for controlling
the inking rollers 16-19, a portion of Ithe casing of the
journalled on a shaft 23 carried on an arm 24 journalled 65 carriage being broken away in FIGURE 3, to show the
mechanism used to control the inking roller 18. As
shown, the inking roller 18 is disposed on a shaft 41
one end of which is journalled by a bearing 42. The
arm 24 is connected through a link 25 to a crank arm 26
bearing 42 is secured to the upper end of a rod 43 jour
which is af?xed to a gear 27 rotatable on a shaft 28
a?ixed to the carriage. The gear 27 meshes with a sector 70 nalled for vertically slidable movement in the carriage.
The rod 43 has a downward-1y facing shoulder 44 on its
gear 29 keyed to a shaft 30 which is journalled by the
inner side which rests against a cam 45 affixed to a
carriage, the inner end of the shaft 31} being secured to
shaft 46 which is journalled by the carriage. The inner
in the carriage, the axis of the shaft 23 being displaced
or eccentric to the axis of rotation of the arm 24.
The
an arm 31 which carries a roller 32. The roller 32 pro
end of the shaft 46 is a?ixed to an arm 47 which carries
jects inwardly into a cam track on one side of the main 75 a roller v48 arranged to engage in cam tracks formed on
3,627,833
frame. A cam track 69 is disposed along the side of
the side of the frame 12. With this mechanism, move
ment of the roller 48 upwardly results in rotation of
the frame and includes surfaces inclined inwardly and
arm 47 and cam 45 in a clockwise direction to move
ment of the wedge member inwardly and outwardly and
thereby control movement of the dampening roller .15
rod 43 upwardly and elevate one end of the shaft 41. A
similar mechanism is provided at the other end of the
inking roller 18,,and it will be understood that similar
mechanisms are provided at both end-s of each of the
inking rollers 16, 17 and 19.
For distribution of ink on the inking rollers 16-19,
outwardly with respect to the frame ‘to control move
upwardly and downwardly, the dampening roller being
engaged with the plate on the plate bed '13 during both
forward and rearward movement of the carriage. For
distribution of water on the dampening roller 15, a dis
vibrator rolls 49, 50 and 51 are arranged to engage be 10 tributor roll 70 is supported therea-bove.
According to this invention, the sheet bed 14 is gradual
ly shifted forwardly or rearwardly while the blanket cy
linder 20 moves thereover to shorten or lengthen the im
rolls 49-51 as they are rotated. Vibrator roll 51 is sup
pression on the sheet of paper. Conceivably, this shift
ported on a shaft 52 one end of which is carried by a
plate 53 which carries a pin ‘5'4 disposed in a slot of a 15 ing movement could be effected by hand, but in accord
ance with this invention, a comparatively simple and very
plate 55 which is carried on the upper end of an up
tween the upper sides of adjacent inking rollers, suit
able means being provided for axially reciprocating the
right member 56 secured to the bearing 42. A similar
support is provided at the other end of the vibrator roll
50 and similar supports are provided at both ends of the
reliable mechanism is provided for controlling the shift
ing movement of the sheet bed 14.
Secured to the forward end of the sheet bed 14 is a
20 bracket 71 including a pair of spaced portions 72 and 73.
vibrator rolls 49 and 51.
'
'
The rearward end of a link 74 is disposed between por
Referring now to FIGURE 1, the roller 48, and similar
tions 72 and 73 and is pivotally secured thereto by means
rollers for controlling the other inking rollers are initial
of
a pin 75. The forward end of the link 74 extends be
ly disposed on a horizontal surface 57 on the side of the
tween a pair of arms 76 and is pivotally secured thereto
frame when the carriage is in its rearward position.
When the carriage is moved forwardly, the control rollers 25 by means of a pin 77. Arms 76 are secured to the cen
tral portion of a transverse shaft 78. One end of the
engage an upwardly inclined cam surface, not shown,
shaft 78 is extended outwardly beyond the side of the
to elevate the same and cause the inking rollers to clear
frame and has secured thereto the hub portion 79 of an
the rearward edge of the plate bed, which may be raised
arm 80 which extends rearwardly along the side of the
slightly above the level of the plate. The control rollers
then ride on a horizontal surface 58 and then on a 30 frame 12. At its rearward end the arm 80‘ carries a cam
downwardly inclined surface 59 to be brought back into
engagement with the surface 57 and to move under a
roller 81.
With the mechanism as thus far described, it will be
appreciated that as the roller 81 is moved upwardly, the
bar 60 affixed to the side of the frame. The inking
shaft 78 will be rotated in a clockwise direction as viewed
rollers will then be engaged with a plate on the plate
35 in FIGURE 1, or a counter-clockwise direction as viewed
bed 13.
in ‘FIGURE 4, to shift the sheet bed 14 forwardly. With
When the inking rollers reach the forward end of the
downward movement of the roller 81, the sheet bed is, of
plate bed 13,'the control rollers engage an upwardly in
course, shifted rearwardly.
clined cam surface 61 to be elevated and to then engage
the upper surface of av bar 62 secured to the side of the
Referring now to FIGURE 5, the carriage 11 carries a
frame. The inking rollers are thereafter maintained 40 generally channel-shaped cam member 82 which includes
a vertical wall 83 and a pair of spaced parallel generally
upwardly in the remainder of the forward movement of
horizontal walls 84 and 85 projecting inwardly from the
the carriage, so as not to engage a sheet on the sheet
upper and lower edges of the vertical wall 83. A pin 86
bed 14. During movement up the cam surface 61, the
is secured to the member 82 adjacent the forward end
control rollers engage a control cam 63 to pivot the same
upwardly out of the path of the control rollers, against 45 thereof and extends outwardly through an opening in the
the action of spring means, not shown. On return move
ment of the carriage in the rearward direction, the con
trol rollers ride over the upper surface of the bar 62,
then over the upper surface of the control cam 63 and
lower end of an arm 86a which is secured to and projects
downwardly from a side portion of the carriage 11. A
pin 87 is secured to the member 82 adjacent the rearward
end thereof and projects outwardly through an opening
The control 50 in a ?tting 88 which is secured to the lower end of a
vertical rod 89. The upper end of the rod 89 extends
through a rearwardly extending portion 90 of an upstand
downwardly against the action of spring means and to then
ing member 91 on the carriage 11, and an adjustment
ride over the upper surface thereof. The rollers then
knob 92 is threaded on the upper end of the rod 89.
ride over the surface 58, and then down the previously
described but unillustrated inclined surface, to return to 55 When the knob 92 is rotated, the rod 89 is moved up
wardly or downwardly, to pivot the cam member 82 up
their initial positions on the surface '57.
wardly or downwardly about the axis of pin 86. The rod
The above-described operation is for normal printing,
89 may carry a pointer member 93 movable vertically
but in some circumstances, particularly when setting up
along a scale 94 provided with suitable indicia for indicat
the machine, it may be desirable to engage the inking
rollers when the plate on return or rearward movement 60 ing the vertical position of rod 89 and hence the position
of the carriage. For this purpose, the control cam 63
of the cam member 82.
may be pivoted upwardly to direct the control rollers
When the carriage is moved forwardly to a position
down the inclined surface 61 and under ‘the bar 60. It
such that the blanket cylinder 20 is at the rearward edge
will, of course, be understood that cam tracks similar
of the sheet bed 14, the roller 81 will be engaged be
to those thus far described are provided on the opposite 65 tween the upper and lower walls 84 and 85 of the cam
side of the frame, for control of the opposite end of
member 82. This relationship is illustrated in FIGURE
the inking rollers.
6. As forward movement of the carriage 11 continues,
The dampening roller 15 is mounted on a shaft 65
the roller 81 will remain in the same position, or will be
which is journalled in a bearing 66. Bearing 66 is sup
gradually shifted either upwardly or downwardly, de
ported on the upper end of a rod 67 which is journalled 70
pending
upon the position of adjustment of the cam mem
for vertically slidable movement in the carriage. The
ber 82.
rod ‘67 has an inclined lower surface, not shown, en
If, for example, the cam member 82 is so positioned
gaged by the upper surface of a wedge member, also not
that the walls 84 and 85 are horizontal, the position of
shown, disposed behind a plate 68 for movement in
wardly and outwardly with respect to the side of the 75 roller 81 will remain stationary. If the cam member 82
then over the upper surface of the bar 60.
rollers then engage a control cam ‘64 to pivot the same
3,027,833
7
8
is shifted downwardly about the axis of the pin 86, the
roller 31 will be engaged by the lower surface of the
ment of said means, means operative during inter-engage
upper side wall 84 to be gradually shifted downwardly
as the carriage is moved forwardly. This will cause a
gradual shifting of the sheet bed 14 in a rearward direc~
ment of said bed and cylinder means for producing move—
.ment of said bed means in parallel relationship to the
direction of movement of said carriage and at a substan—
the axis of the pin 86, the roller 81 will be engaged by
tially constant ratio to the movement of said carriage, and
means for adjusting said ratio.
‘ 4. In a printing press, a frame, a carriage mounted for
the upper surface of the lower wall 85 to be gradually
shifted upwardly and to gradually shift the sheet bed 14%
of said frame, bed means on said frame, cylinder means
tion.
If the cam member 82 is shifted upwardly about
forwardly.
forward and rearward movement between opposite ends
10 on said carriage effectively engageable with said bed
It will thus be appreciated that with this comparatively
simple mechanism, ‘the sheet bed 14 can be gradually
shifted either forwardly or rearwardly as desired, during
engagement of the blanket cylinder 2% with the sheet.
means on forward movement of said carriage, said bed
means being arranged to support a sheet and said cylinder
means being arranged to carry an ink image to be trans
ferred to the sheet upon inter-engagement of said means,
This movement can be controlled with great accuracy by
means operative during interengagement of said bed and
cylinder means for producing movement of said bed
adjustment of the knob '92. Furthermore, it will be ap
parent that the adjustment can be quickly effected.
To insure initial positioning of the roller 81 between
the walls 84 and 85 of the cam member 82, the cam mem
means in parallel relationship to the direction of move~
ment of said carriage and at a substantially constant ratio
to the forward movement of said carriage, and means for
ber 32 is preferably provided at its forward end with
adjusting said ratio to any selected value Within a range
wall portions 95 and g6 extending angularly upwardly
extending from a negative value to produce rearward
movement of said bed, to a positive value to produce for
and downwardly from the forward ends of the wall por
tions 84 and 85. Similarly, the cam member 82 at its
rearward end may include wall portions 97 and 93 ex
ward movement of said bed.
5. In a printing press, a frame, a carriage mounted for
tending angularly upwardly and downwardly from the 25 movement back and forth between opposite ends of said
rearward ends of the wall portions 84 and S5, to insure
frame, bed means on said frame, cylinder means on said
that the roller will become positioned within the channel
carriage, said bred means being arranged to support a
sheet of paper and said cylinder means being arranged to
member on return rearward movement of the carriage.
This invention thus provides a readily and quickly ad
carry an ink image to be transferred to the sheet upon
justable system for either shortening or lengthening the 30 inter-engagement of said means, a ?rst member carried
by said carriage, a second member movably supported on
size of an image produced on the sheet of paper. It is
said frame for engagement by said ?rst member during
noteworthy that with the cam, lever and linkage arrange
inter-engagement of said bed and cylinder means, and
ment as illustrated, the ratio between movement of the
means coupling said second member to said bed means
sheet bed and the corresponding movement of the car
riage is substantially linear, which is highly desirable 35 for producing gradual movement of said bed means in a
direction parallel to the direction of movement of said
since the stretching or shrinking of a sheet will ordinarily
carriage during inter-engagement of said bed and cylinder
be uniform along its length. It is also noted that the de
means.
gree of movement of the sheet bed is small compared to
6. In a printing press, a frame, a carriage mounted for
the corresponding vertical movement of the roller 81 so
as to reduce the accuracy required in positioning of the 40 movement back and forth between opposite ends of said
frame, bed means on said frame, cylinder means on said
cam member 82 and at the same time to more accurately
carriage, said bed means being arranged to support a
control the movement of the sheet bed.
sheet and cylinder means being arranged to carry an ink
It will be understood that modi?cations and variations
image to be transferred to the sheet upon inter-engagement
may be effected Without departing from the spirit and
scope of the novel concepts of this invention.
45 of said means, a cam follower member supported on said
frame for movement in a direction generally transverse to
I claim as my invention:
the direction of movement of said carriage, a cam member
1. In a printing press, a frame, a plate bed and a sheet
on said carriage having a surface engageable with said
bed in spaced relation on said frame, a carriage mounted
cam follower member during inter-engagement of said
for movement back and forth between opposite ends of
bed and cylinder means, and means coupling said cam
said frame, inking rollers journalled by said carriage and
follower member to said sheet bed for shifting said
arranged to apply ink to a plate on said plate bed, a
sheet bed in a direction parallel to the direction of move
blanket cylinder journalled on said carriage and arranged
ment of said carriage in response to movement of said
to engage a plate on said plate bed to pick up an image
therefrom and to then engage a sheet on said sheet bed
cam follower member.
to transfer the image thereto, and means for gradually
shifting said sheet bed in parallel relationship to the direc
tion of movement of said carriage during engagement of
said blanket cylinder with the sheet.
7. In a printing press, a frame, a carriage mounted for
movement back and forth between opposite ends of said
frame, bed means on said frame, cylinder means on said
of said means, a cam follower member supported on said
frame, bed means on said frame, cylinder means on said
carriage, said bed means being arranged to support a sheet
and said cylinder means being arranged to carry an ink
2. In a printing press, a frame, a carriage mounted for
movement back and forth between opposite ends of said 60 image to be transferred to the sheet upon inter-engagement
frame for movement in a direction generally transverse
carriage, said bed means being arranged to support a sheet
,to the direction of movement of said carriage, a cam
and said cylinder means being arranged to carry an ink
member on said carriage having a surface engageable with
image to be transferred to the sheet upon inter-engagement
said cam follower member during inter-engagement of
of said means, means operative during inter-engagement
said bed and cylinder means, means coupling said cam
of said bed and cylinder means for producing movement
follower member to said sheet bed for shifting said sheet
of said bed means in parallel relationship to the direction
bed in a direction parallel to the direction of movement
of movement of said carriage and at a substantially con
of said carriage in response to movement of said cam
stant ratio to the movement of said carriage.
3. In a printing press, a frame, a carriage mounted for 70 follower member, and means pivotally supporting said
cam member on said carriage for adjustment of the angle
movement back and fourth between opposite ends of said
of inclination of said surface relative to a plane parallel
frame, bed means on said frame, cylinder means on said
carriage, said bed means being arranged to support a
to the direction of movement of said carriage.
sheet and said cylinder means being arranged to carry an
8. In a printing press, a frame, a carriage mounted for
ink image to be transferred to the sheet upon inter-engage 75 movement back and forth between opposite ends of said
3,027,838
frame, bed means on said frame, cylinder means on said
carriage, said bed means being arranged to support a sheet
and said cylinder means being arranged to carry an ink
image to be transferred to the sheet upon interengage
10
bed means in response to movement of said carriage in
a direction generally parallel to the direction of movement
of said carriage.
References Cited in the ?le of this patent
ment of said means, an elongated cam track pivotally
UNITED STATES PATENTS
mounted on said frame, a cam roller connected to said
carriage and adapted to be received in said elongated cam
track for movement therealong, said cam track being tilt
able in response to movement of said cam roller there
along, and rod means pivotally connected to said elon 10
gated cam track and to said bed means for moving said
1,128,351
Motley ______________ __ Feb. 16, 1915
1,715,712
Koppe ______________ _____ June 4, 1929
2,619,901
Harrold ______________ __ Dec. 2, 1952
2,694,941
2,725,010
Spiller ______________ __ Nov. 23, 1954
Vandercook et a1 ______ .._ Nov. 29, 1955
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