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Патент USA US3071382

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Jan. 1, 1963
Filed July 15, 1960
3 Sheets-Sheet 1
Attorney S
Jan. 1, 1963
Filed July 15, 1960
3 Sheets—Sheet 2
I nuentor
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By ?aw/WM?”
A Home y S
Jan. 1, 1963
3,071 ,3 72
Filed July 15, 1960
3 Sheets-Sheet 3
Attorney 5
United States Patent O?lice
Derek Anthony Stevenson, Leeds, England, assignor to
R. W. Crabtree & Sons Limited
Filed July 15, 1960, Ser. No. 43,098
Claims priority, application Great Britain July 24, 1959
2 Claims. (Cl. 271-53)
Patented Jan. 1, 1963
and such an incorporation will now be described with
reference to the accompanying drawings.
In the drawings FIGURE 1 is a side elevation and
FIGURE 2 is a local plan view of part of the length of
a front lay assembly in accordance with this invention,
FIGURE 3 is a perspective view of a remote control box
and FIGURE 4 is a diagrammatic side elevation of a
sheet-fed printing machine showing the application of
This invention relates to mechanism employed to ef
the invention to it.
fect the front registration of sheets preparatory to their 10
Referring firstly to FIGURES 1 and 2, the front lays
being forwarded for an operation upon them: such regis
are indicated at 1, the various lays extending in a trans
ter mechanism is used on various different classes of sheet
verse row across the direction of advancing movement of
handling machines and is in common use in sheet printing
the sheet to be front registered while on a feed board X.
machines: for convenience in what follows reference will
The various lays are similar and each has similar con
mainly be made to sheet printing machines.
15 trol mechanism: thus each lay 1 is mounted on a carriage
Such front register mechanism comprises sheet stops,
2 which is moved backwards and forwards by a lever
usually termed front lays: such front lays are moved in
pivoted at '4, one arm 5 of the lever being pivotally con
to the path of movement of the sheet so as to ‘bring it to
nected to the carriage at 6 and the other arm 7 having
rest momentarily to effect the required registration and
a follower roller 8 making engagement with an edge cam
are then lowered to move clear of the front edge of the 20 9, the lever being biased by a spring 10 to carry the roller
sheet to permit it to be taken by grippers which pass the
towards the cam.
now registered sheet forward to the printing mechanism.
The carriage 2 is guided in its movement by a cam
Most commonly the front lays (which are two or more
in number, depending on the width of the sheets being
track 11 on blocks 118 and in which run rollers 12 on
the carriage 2: the track is shaped as is shown in FIG
dealt with) are mounted on a shaft which is rocked to 25 URE 1 so that as the carriage moves to the right into
move the lays into and out of registering position: the
shaft is usually adjustable so as to advance or retract the
lays in the path of the sheet advancing towards them and
in some cases provision is made for the lays to be set
in a slightly skewed position relative to the advance of the
Especially inthe case where very wide sheets are to
be used (say sheets exceeding 50" in width) the lays may
amount to anything from four to eight or even more in
position to register a sheet, it lifts the lay 1 above the
level of the advancing sheets shown at S: when the car—
riage is moved to the left (which is timed to occur after
the sheet S has been brought to rest temporarily and
registered by the front lay 1) the cam track 11 causes the
carriage 2 to be lowered by rocking about the pivot 6 so as
to move the lay 1 to below the level of the sheets; this
action frees the registered sheet which now passes on
as by being taken by grippers (not shown) on a feed
cylinder F. The various front lays are carried by a shaft
9“ which is driven ‘by the machine to which the sheets
S are fed by the feed cylinder F so that the registering of
particularly the case where, for accuracy in printing, it
the sheet and its release are operations which are effected
is required to set the lays to a “line” which is curved
step with the sheet feeding requirements of the ma
either convexly or concavely with the respect to the on— 40 chine.
coming edge of the sheet to be registered by the lays.
In order to vary the settings of the various front lays
In the mechanism so far provided adjustment of the lays
1 individually a stop 14 is disposed in the path movement
usually necessitates the stopping of the machine: in addi~
of an abutment 15 on each of the carriages 2: each stop
number: the adjustment of the shaft in such cases in
particular is not always sufficient: for this reason it be
comes necessary to adjust the lays individually, this being
tion, the adjustment of the lays individually is mainly a
matter of trial and error which involves repeatedly stop
ping the machine and re-starting it until the optimum set
ting is obtained.
is adjustable to be engaged by the corresponding abut
ment 15 earlier or later in the movement of its carriage 2
forward (i.e. to the right) to operative position. Thus by
manipulation of the stops 14 the front register setting of
It is one object of the present invention to provide a
the lays 1 can be varied. ,
front lay‘ mechanism such that adjustment can be made
For the purpose of this adjustment, the stop 14 is in
while the machine is running so that the time at present
the construction shown on a lever 14*‘ pivotally mounted
occupied can be considerably reduced.
on a pivot 16 so that, by rocking the lever, the stop is
A further object of this invention is to provide a front
advanced or retracted. This adjustment can obviously
lay mechanism which can be adjusted remotely from a
be made while the machine is running. As each front
point at which the effects of the setting on the sheets can
lay 1 would be similarly controlled, it follows that each
be examined and the setting varied to make any change
stop can be individually controlled by rocking the various
which may be necessary from the examination zone.
levers 14a individually.
Broadly stated the present invention consists in so
The invention also makes provision to enable remote
mounting some and usually all of the front lays for
control of'the various levers 14a to be obtained from say
adjustment in their setting and in providing adjusting
60 the delivery of the machine where the effect of adjustment
mechanism disposed for operation to effect adjustment of
of the front lay can be inspected. For this purpose each
the lays while the machine is running.
A further feature consists in providing an adjustment
mechanism which is coupled to the front lays by remote
of the levers 14“ has pivoted to it at 17 a rod 18 which
is screw-threaded to engage a rotatable nut 19 in a unit
frame 19": the nut is fast with a bevel 20 in mesh with
transmission so that control of the setting can be achieved 65 a bevel 21 on a spindle 22 coupled to a low-speed reversi
ble motor 23. The various motors 23 are controlled by
from a zone convenient to the operator and advantageous
an electrical remote transmission from a control box 24,
1y at a Zone at which the sheets can be observed by the
such as is shown in FIGURE 3 and each having forward
operator who is thereby able to inspect the effect of ad
and reverse pushes 25, 26 by manipulation of which the
justment and to correct it if necessary.
selected motor 23 causes the corresponding lever 14a to
Usually the two features would be incorporated in the
be rocked in one direction or the other.
one installation to obtain the bene?ts of both features
In order also to give an indication of the setting of
ally to adjust the associated stop member to predetermine
the operative positions of said lays in alinement with each
the various leversléa and'hence of the individual front
lays 1 at the control zone, the various nuts 19 are ex
tended to operate potentiometers '27 in the circuit of volt
meters shown at 28 in FIGURE 3, these volt meters
being calibrated in terms of adjustment from a datum
2. In a sheet printing machine, means to forward
sheets in succession to the machine, a plurality of lays
disposed substantially in a line across the path of move
ment of the sheets, each lay being mounted for movement
transversely of both the paths of movement of said sheets
and of said line of disposition of said lays between an
operative position to intercept the advancing end of the
sheet and an inoperative position and also for movement
In FIGURE 4 is shown the application of the appa'
ratus of this invention to a well-known type of sheet fed
printing machine of the off-set sheet perfecting kind in
which sheets S are taken by the cylinder F from a sheet
feeding apparatus 29, are then registered as described by
the front stops 1, pass thence to the cylinders 30 of the
printing unit and ?nally are taken by a conveyor 31 which
longitudinally in directions generally parallel to the path
of movement of said sheets, positive means for moving
each lay to its inoperative position, spring means for
moving each lay to its operative position and in one direc
tion longitudinally of the path of movement of said
lays the printed and perfected sheets on a delivery pile
As will be clear from this ?gure, this invention en
ables the control box 24 to be disposed for example in a
sheets, a stop member engageable with each lay in re
sponse to longitudinal movement of each lay accompany
position convenient to an operator stationed at the deliv
ing movement of the lay to its operative position, a bell
ery station 32 where he is able to examine the printed
crank lever for each stop member and to one end of
sheets and, by operation of the appropriate push-buttons
which such stop member is secured, a plurality separately
25, 26, set the front stops 1 as necessary and, of course,
controllable electric motors corresponding in number to
while the machine is in operation.
said bell crank levers, means for separately controlling
I claim:
said motors, and motion transmitting means connected
1. ‘In a sheet printing machine, means to vforward
between each motor and the other arm of each bell crank
sheets in succession to the machine, a plurality of lays
lever to swing the latter and adjust the associated stop
disposed substantially in a line across the path of move
whereby said'lays may be accurately individually adjusted
ment of thesheets, each lay being mounted for move
in alinement with each other.
ment transversely of both the path of movement of said
sheets and of said line of disposition of said lays between
References Cited in the ?le of this patent
an operative position to intercept the advancing end of
the sheet and an inoperative position and also for move
mentlongitudinally in directions generally parallel to the
path of movement of said sheets, positive means for mov
ing each lay to its inoperative position and in one direc
tion longitudinally of the path of movement of said
sheets, spring means for moving each lay to its operative
position and in the opposite direction longitudinally of
the path of movement of said sheets, a stop member en
gageable with each lay in response to the longitudinal
movement of each lay in said opposite direction and to
its operative position, a lever carrying each stop member,
and remotely controllable separate means respectively
connected to said levers for swinging each lever individu
Miehle ______________ -_ Oct, 16,
Stratton _____________ __ Apr. 25,
Barber _______________ __ June 5,
Kelly ________________ __ Ian. 18,
Reinatz ______________ __ July 27,
Kes _________________ .__ Nov. 12,
“Cams” (book), by Harold A. Rothbart, published by
John Wiley and Sons, Inc., New York, 1956, pp. 307, 308.
(Library of Congress, Catalog Card Number 56-7163,
Patent Ol?ce Scienti?c Library Number, Tj 206 R6.)
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