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Патент USA US2127563

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Aug. 23‘, 1938.
G. w. JOHNSTON
2,127,563
PAPER CUTTING MACHINE
Filed Oct. 20, 1936
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INVENTOR
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Patented Aug. 23, 1938
‘UNITED STATES PATENT oFFics
2,121,5sax
PAPER CUTTING MACHINE
George W. Johnston, Astoria, N. Y.
Serial No. 106,49‘?
Application October 20, 1936,
9 Claims. (Cl. 164-41)
This invention relates to improvements in
paper cutting machines in which a stack or pile
of sheets, such as paper or card board, are sup
ported upon a bed plate of the frame of the
5
machine adapted to be simultaneously cut to size
‘or trimmed by a cutter in the form of a knife
blade carried by a carrier mounted in the frame
the form of a knife blade 1, the cutter being
suspended in said guideways or slots to have
reciprocatory movement toward and away from
the material support by links 8, 9 pivotally con
nected at one end to the cutter carrier and at
the opposite end pivoted to the arched member.
There is provided the usual member to clamp the
to have reciprocatory movement toward and
away from the bed plate, and relates particularly
10 to‘ power operated paper cutting machines em
bodying means to couple the cutter carrier actu
stack or pile of sheets to be cut to the bed plate
adapted to be actuated toward and away from 10
the bed plate by a hand wheel it. A gauge or
gauges (not shown) are also provided as usual to
ating means with and uncouple it from power
means and operative by means actuated when
the cutter carrier actuating means moves the
position the material on the support relative to
the cutter.
. cutter away from the bed plate to uncouple the
cutter carrier actuating means
means, and it is the object of the invention to
A rotatable shaft H is journalled in the base 15
of the frame and is adapted to be connected to
driving means, shown in the form of a pulley it
loose on the shaft and driven by a belt 53 from
provide improved means operative when the
means to couple and uncouple the cutter carrier
20>. actuating means from its driving means is actu
a suitable source of power, and shown as an
electric motor M mounted on the frame of the 20
machine. Means are provided to couple and un
couple the pulley l2 from the shaft ll, and shown
ated to uncouple the cutter carrier actuating
means from its driving or power means when the
as a conventional form of clutch comprising an
cutter carrier is moved away from the bed plate
and hold the cutter carrier actuating means
adapted to be operated by an expanding device
expanding clutch arranged within the pulley and
against movement and adapted to be released
carrier actuating means by the
operation of the means to couple the cutter car
rier actuating means with the power means.
In the drawing accompanying and forming a
part of this application Figure 1 is a front eleva
3 O tion of a conventional form of paper cutting
machine embodying the invention and showing
the parts in operative position to hold the actu
It to engage a drum Ill’ carried by the pulley, 25
the expanding device H5 being actuated by a cone
l5 mounted on the shaft l l to have sliding move
ment on and rotate with the shaft and adapted
to be moved or actuated toward and away from
the expanding device M by a manually operative 30
lever or shifter l6 pivotally supported by a
bracket mounted on the frame, the one arm of
the lever having a bifurcation H to straddle the
ating means for the cutter carrier against move
ment, only so much of the paper cutting machine
35 being shown as is essential to an understanding
of the invention.
Figure 2 is a sectional view taken on the line
2-2 of Figure 1 looking in the direction of the
40 arrows.
Figure 3 is a fragmentary front elevation of
the machine and partly in section to show the
the invention in position to re
lease the actuating means for the cutter carrier
and permit of operation thereof to actuate the
45
cutter carrier; and
‘
Figure 4 is a fragmentary view of means to stop
the cutter carrier actuating means after a cutting
operation of the cutter.
>
An embodiment of the invention is illustrated
in the drawing in connection with a conventional
form of paper cutting machine, comprising a
frame having a hollow base B arranged with a
bed plate‘ 4 for supporting the material, such as
i a stack or pile of sheets of paper or card board,
I to be cut or trimmed. An arched member 5 is
(10.‘
cone i5 and each bifurcation arm having a pin
?xed in and extending inwardly from said arms 35
to engage an annular groove or recess in the
cone l5, as shown at
l8.
-
'
. .
The shaft II is operatively connected to the
cutter carrier 6 to move the same toward and
away from the bed plate 4 by the rotation of the
shaft by a worm IS on said shaft meshing with
a worm wheelv 20 ?xed on a rotatable shaft 22)’
having a crank connection with the cutter car
rier in the form of a link 2! pivotally connected
at one end to a pin in a bifurcation of a laterally 45
extending portion of the cutter carrier, as at 22.
The opposite end of the link 2| is pivotally en
gaged on a stud 23 fixed eccentrically in and
extending laterally from a face of the worm wheel
20, whereby upon a revolution of the worm wheel 50
there will be imparted a movement to the cutter
carrier toward and away from the material sup
port. Means are provided to automatically stop
the operation of the actuating means for the cut
55
ter carrier after each movement of the cutter
carrier toward and away from the material sup
mounted and supported upon the bed plate 4, the
port or bed plate to permit of the removal of
the cut or trimmed material and ‘the ‘substituting
uprights of which arched member are provided
of material to be cut.
with guideways in the form of slots for the en
gagement of a bar or carrier 6 for a cutter in
are provided‘ to disconnect the shaft H and
For this purpose means 60
2
2,127,563
thereby the cutter carrier actuating means from
the driving means #2, and shown as comprising
moving the arm 24 longitudinally and causing
an arm 26 pivotally connected at one end to and
extending from an arm 33 of the clutch shifter
E6 to intersect and lie contiguous to a face of
?exing laterally the arm 24, the abutment having
a beveled edge whereby this movement of the
the worm wheel 20, the arm being provided with
abutment is facilitated, and to actuate the lever
the abutment 25 to ride off from the pin 26 and
23, 3! in position to move the latch nose 29 out
of engagement with the stud 23, and the blade
carrier 6 is operatively connected with the driv
ing means l2, as shown in Figure 3. The parts
10
engage the abutment by the rotation of the Worm
wheel, when the clutch shifter is operated to
actuate the cone E5 to connect the shaft with the
driving means or pulley i2, and operate the clutch
shifter IE to actuate the cone I5 to disconnect
the shaft H from the driving means or pulley l2.
are maintained in such positions for substantially
one revolution of the worm wheel 20 and during
the movement of the cutter carrier toward and
away from the material support.
To facilitate reciprocating and counterbalancing
the cutter carrier a further link 2'! is pivotally
connected to the pin 22 and the opposite end
connected to a pivoted counterweight, as is usual
in machines of this character, but which is not
shown since it does not constitute an essential
part of the present invention.
To prevent movement of the cutter carrier
toward the material support or bed plate during
the period of removal of the cut or trimmed ma
terial from the bed plate and substituting other
moved longitudinally toward the
i6 and thereby move the clutch shifter I6 to K
actuate the clutch actuating member IE to per
mit the clutch to disconnect the shaft II from
the driving means 52, and the parts will be ef
'
against movement in said posi
tions by the stud 23 engaging the latch nose 29
cf the lever arm 28.
Having described my invention, I claim:
material to be cut or trimmed, means are provid
ed which is automatically operative to hold the
30 cutter carrier actuating means and thereby the
cutter carrier against movement vhen the shifter
1. In paper cutting machines, a support for
the material to be cut, a cutter reciprocatory to
30
lever l 6 is operated by the arm 21.1 from the Worm
wheel 20 to actuate the cone i5 or by any other
means, such as breakage in the clutch which will
actuate the cone 55 in a direction from the pulley
I2, to disconnect the shaft H from the driving
means or pulley l2 and thus prevent injury to
the operator of the machine. This means as
shown comprises a lever, one arm 3:8 of which is
40. provided with a nose 29 to arrange said arm as a
‘ latch. The lever is ?xed on a shaft 36 extending
parallelly of the axis of the worm wheel 20 and
35
ter actuating means from its driving means and
hold the rotatable member against rotation with
the cutter in position away from the material
support.
7
2. In paper cutting machines, a support for the
material
'
one position of the lever
latch 28 the nose will be positioned to be engaged
by the extended end of said stud, as shown in
Figure 1. To eifect automatic operation of said
.latch when the cutter carrier is moved to posi
tion‘ away from the bed plate or
port and the shaft i I disconnected
ing means l2, the other arm 3|
lever is connected with the clutch
material sup
from its driv
of the latch
shifting lever
by a link 32 pivotally connected at one end to
the lever arm 3i and the other end to the arm
33 of the clutch shifting lever.
~
In operation the parts are normally in the po
sition shown in Figure l with the clutch shifting
60 lever l8 positioning the clutch actuating mem
ber i5 in unclutching position and disconnecting
the shaft Ii from the driving means H2. The
pin 25 is in engagement with the abutment 25
away from the material support.
3. In paper cutting machines, a support for the m)
on the arm 2% and the stud 23 is in engagement
with the nose 29 of the lever latch 28 with the
cutter carrier in position away from the bed
plate or material support and held in such po
sition by the engagement of the stud 23 with
the latch nose 29. In this position of the parts
70 the material to be cut or trimmed is positioned
on the bed plate or material support 4 relative
to the cutter when the clutch shifting lever I6
away from the material support upon a revolu
is operated to actuate the clutch member I5 to
couple the shaft 5 l with the driving means I2,
tion of said wheel, means connected to the clutch
shifter adapted to engage and hold the wheel,
and means connected to the clutch shifter actu
ated by said wheel upon a revolution thereof to
75 this movement of the clutch shifting lever I6
70
75
3
2,127,563
operate the shifter to actuate the clutch to dis
connect the shaft from its driving means and
operate the wheel holding means to hold the actu
ating means for the cutter carrier against move
ment with the cutter carrier in position away from
the material support.
4. In paper cutting machines, a frame includ
ing a support for the material to be cut, a cutter
carrier mounted in the frame to have movement
10 toward and away from the material support, a
rotatable shaft, driving means for and rotatable
concentrically of the shaft, means to connect and
actuate the cutter carrier from the shaft includ
ing gear wheels and a link connected at one end
nected to the shifter adapted to engage the link
connecting stud and ,hold the worm wheel and
cutter carrier against movement when the
shifter is operated to actuate the clutch to dis
connect the shaft from the driving means, and
release the latch from said stud by the opera
tion of the shifter to actuate the clutch to con
nect the shaft with its driving means.
7. Paper cutting machines as claimed in claim
6, wherein the latch comprises an arm of a lever 10,
15 to the cutter carrier and connected at the oppo
site end to a stud ?xed eccentrically in and ex
tending laterally from a face of one of the gears,
a clutch to connect the driving means with and
disconnect the same from the shaft, a shifter to
actuate said clutch, and a latch pivotally con
nected with the clutch shifter adapted to be en
gaged by the eccentric stud of the one gear when
the shifter is moved to actuate the clutch to dis
connect the shaft from its driving means and
said
engagement of the stud, with the latch hold
25
ing the actuating means for the cutter carrier
against movement, and the latch adapted to be
released from said gear stud when the shifter
is operated to actuate the clutch to connect the
30 shaft with its driving means.
5. In paper cutting machines, a frame includ
ing a support for the material to be cut, a cut
ter carrier mounted in the frame to have move
ment toward and away from the material sup
port, a rotatable shaft having a worm thereon,
driving means for the shaft, a clutch to connect
and disconnect the shaft from the driving means,
means to actuate the clutch, a worm wheel mesh
ing with the worm on and rotated from the shaft I
40 having a stud ?xed eccentrically in and extend
ing laterally therefrom, a link pivotally engaged
at one end on the stud and at the opposite
end connected with the cutter carrier and ar
ranged to impart movement to the cutter carrier
45 toward and away from the material support
upon a revolution of the worm wheel, and means
connected with and operative from the clutch
actuating means when operated to actuate the
clutch to disconnect the shaft from its driving
means to co-operate with the eccentric stud of
50
the worm wheel to hold said wheel against rota
tion and the cutter carrier against movement and
said means being released from said stud when
the clutch actuating means is operated to actuate
55 the clutch to connect the shaft with its driving
means.
_
6. In paper cutting machines, a frame includ
ing a support for the material to be cut, a rotat
able shaft having a worm thereon, driving means
for the shaft, a clutch to connect and discon
nect the shaft from the driving means, a clutch
shifter, a worm wheel rotatably supported by the
frame meshing with the worm and having a stud
?xed eccentrically in and extending laterally
65 therefrom, a link pivotally connected at one end
to the cutter carrier and the opposite end piv
oted on the stud of the worm wheel and arranged
to impart movement to the cutter carrier toward
and away from the material support upon a revo
lution of the worm wheel, means connected to
70
the clutch shifter and operative from the worm
wheel upon a revolution thereof to operate the
shifter to actuate the clutch to disconnect the
shaft from its driving means, and a latch con
connected to the clutch shifter by a link pivotally
connected to the other arm of said lever and
the shifter.
8. In paper cutting machines, a frame having
a support for the material to be cut, a cutter
carrier mounted in the frame to have movement
toward and away from the material support,
means to actuate said cutter carrier including a
rotatable wheel having a stud ?xed eccentrically
in and extending laterally from the wheel and a ,
link pivoted at one end on said stud and the op
posite end connected with the cutter carrier to
impart movement to the cutter carrier toward
and away from the material support upon a
revolution of the wheel, driving means, means -'
including a clutch to connect the wheel with
and disconnect the wheel‘ from the drivingmeans,
a clutch shifter, a lever having one arm arranged
as a latch to engage the wheel stud to hold the
wheel and cutter carrier against movement, and
a link connecting the other arm of the lever to
the clutch shifter, and said shifter when operated
to actuate the clutch to disconnect the wheel
from the driving means adapted to position the
latch to be engaged by the wheel stud and when 35
operated to actuate the clutch to connect the
wheel with the driving means actuate the lever
to release the lever latch from the wheel stud.
9. In paper cutting means, a frame including
a support for the material to be cut, a cutter car- -
rier mounted in the frame to have movement
toward and away from the material support,
means to actuate said cutter carrier including
a rotatable wheel having a stud ?xed eccentrical 45
ly in and extending laterally from the wheel and
a link pivoted on said stud at one end and con
nected at the opposite end with the cutter car
rier to impart movement to the cutter carrier
toward and away fromthe material support upon
a revolution of the wheel, driving means, means
including a clutch to connect the wheel with
and disconnect it from the driving means, a
clutch shifter, an arm connected to and extend
ing from the clutch shifter to intersect and lie 55
contiguous to a face of the wheel and having
an abutment on the face opposed to the wheel,
a pin ?xed eccentrically in- and extending from
the wheel adapted to engage the arm abutment
upon a revolution of the wheel and thereby‘ move
the arm and shifter to actuate the clutch to dis
connect the wheel from the driving means, a
lever having one arm arranged as a latch to en
gage the wheel stud to hold said wheel and the
cutter carrier against movement, and a link 65
connecting the other arm of said lever to the
,clutch shifter, and said shifter when operated
to actuate the clutch to disconnect the wheel
from the driving means adapted to position the
lever latch to be engaged by the wheel stud and
when operated to actuate the clutch to connect 70
the wheel with the driving means actuate the
lever to release the lever latch from the wheel
stud.
GEORGE W. JOHNSTON.
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