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Патент USA US3039352

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June 19, 1962
J. E. EUTH
3,039,345
SLITTER AND PIN-WHEEL FEED FOR STATIONERY STRIPS
Filed Oct. 13. 1958
4 Sheets-Sheet 1
h dc 7I w .7.
June 19, 1962-
_J_ E, EUTH
3,039,345
SLITTER AND PIN-WHEEL FEED FOR STATIONERY STRIPS
Filed Oct. 13, 1958
FIE
4 Sheets-Sheet 2
June 19, 1962
3,039,345
J. E. EUTH
SLITTER AND PIN-WHEEL. FEED FOR STATIONERY STRIPS
4 Sheets-Sheet 5
FilQd Oct. 15, 1958
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June 19, 1962
J. E. EUTH
3,039,345
SLITTER AND PIN-WHEEL FEED FOR STATIONERY STRIPS
Filed 001;. 15, 1958
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4 Sheets-Sheet 4
United States Patent 0 ice
3,639,345’.
Patented June 179, 1962
1
2
3,039,345
of stationery showing the feed band partially removed
therefrom.
SLITTER AND PIN-WHEEL FEED FOR
The slitter of the present invention may be used for
various slitting operations on continuous form stationery
STATIONERY STRIPS
John E. Euth, Chicago, lllh, assignor to Uarco,
and interleaved carbon ‘strips and may be used in con
nection with various types of machines found in business
Incorporated, a corporation of iliinois
Filed Oct. 13, 1953, Ser. No. 766,901
14 Claims. (Cl. S3—423)
offices using continuous form stationery. The principles
of operation of the slitting ‘blades may be utilized in other
processes and with other equipment.
This invention relates to a slitter for sheet material
Referring to FIGS. 1 and 2, the slitting devices of the
and more particularly to a slitter for removing marginal 10
present invention are shown as mounted on parts 8 and 9
feed bands from a plurality of superposed stationery
of the frame of a bursting machine. Continuous form
strips.
The severing or cutting of continuous stationery strips
has generally been accomplished by relatively high speed
cutting wheels. Ordinarily, the cutting wheels would
stationery S is shown in dotted outline traveling in the
direction of the arrow 10 and having its marginal perfo
15 rated feed bands 11 ‘and 12 removed by the slitting mech
have a peripheral velocity from eight to twenty times the
surface speed of the paper being cut. Di?iculties in ob
taining a straight, as contrasted to a wavily cut edge, have
been generally accepted. Also, there has been difficulty
in cutting accurately through many moving webs, for
example, eight to twelve webs with interleaved carbon
strips. The slitter of the present invention solves both
these problems and shows a mechanism for accomplish
ing a straight out in one or a plurality of superposed
strips.
It is therefore the primary object of this invention to
provide a new and improved slitter of the character
described.
Another obiect is to provide a slitter mechanism in
which the cutting blades move at the same speed as the 30
stationery being out
anisms 13 on the left hand and 14 on the right hand side.
These slitting mechanisms are mounted upon a mounting
rod 15 and a drive shaft 16, the latter having a keyway
17 for driving connection with gearing within the slitting
units. A drive chain 13, receiving motive force from
the motor driving the burster machine, transmits force
through gears 19 and 20 (FIG. 2) to the drive shaft 16.
The shaft is equipped with appropriate bearings 21 and
22 in the frame parts 8 and 9 of the bursting machine.
The frame parts may be supported upon a base shown
fragmentarily at 23 and being in the nature of a table.
' Each‘ of the slitting units 13 and 14 is shown herein
as a self-contained device movable along the rod and
drive shaft supporting the same. A thumb nut 24 at
the front of each unit may be utilized for the purpose of
locking the unit in a selected position. The units are
similar, being positioned to trim the left hand margin of
the stationery and the unit 14 positioned to trim the right
‘hand margin. The structural form of the units is similar
Another object is to provide such a mechanism in which 03 D1 except for the differences necessitated by the left versus
Another object is to provide such a mechanism in
which the stationery is maintained under positive control
to an instant just prior to the slitting of the stationery.
the slitting blades are so mounted as to maintain a proper
right hand positioning.
Each of the slitting units has a base frame 30 support
cutting relation even though the supporting mechanism
ing a rearward cover 31 and a forward cover 32 hinged
for the cutting blades may not be in true alignment.
on a pin 29, the covers enclosing these sharp‘ slitting blades
A further object is to provide a slitter mechanism
capable of maintaining a straight line out in a moving web 40 from view. The forward cover 32 is equipped with a
?nger detent 27 adapted to engage openings in the base
of stationery whether a single strip or a plurality of super
posed strips are cut at one time.
A still further object is to provide a mechanism where
in an adjustment in the Width of the strip or the place
frame to hold the cover in closed or open position,
An
opening 28 is shown for receiving the detent to hold the
front cover open in cooperation with the detent. Be
45 tween the lateral extension 33 of the base frame and the
ment of cut may be made readily and easily.
covers, there is formed a guide for the stationery.
A still further object is to provide a compact slitter
As best illustrated in FIGURES 3 and 4, the extension
unit readily serviceable and adaptable to various instal
33 of the base frame for supporting the stationery is,
lations.
in effect, a ledge formed on a part of the base. This
Further objects, features and advantages of the present 50 ledge
in connection with the rearward cover 31 forms
invention will be apparent from the following descrip
an upwardly extending guideway 35 leading the station
tion of a preferred embodiment illustrated in the accom
ery upwardly to the slitting position and then horizon
panying drawings, in which:
tally beyond that point in connection with the forward
FIGURE 1 is a fragmentary plan view of a pair of
slitter mechanisms embodying the invention and mounted 55
upon a bursting machine frame;
FIGURE 2 is a fragmentary elevational view of the
mechanism shown in FIGURE 1, viewing the same from
0*
cover 32.
The construction of the base frame includes a number
of castings held together in a relatively unitary structure.
An upstanding part 36 is connected to an intermediate
section 37 and the innermost section 38 forming a part
of the guide ledge. These frame sections mount a lower
the bottom of FIGURE 1 and taken substantially along
60 stub shaft 25 and an upper stub shaft 39 in as close to
line 2—2 in FIGURE 1;
parallel relation as possible. Each of the shafts is pro
FIGURE 3 is an elevational view looking toward one
vided with bearings such as the bearings 40 and 41 for
of the slitter units shown in FIGURES 1 and 2;
the lower shaft and the bearings 42 and 43 for the upper
FIGURE 4 is a vertical sectional view through the
shaft. Between the bearings and secured to the shaft are
slitter unit taken substantially along line,4—4 in FIG
gears 44 and 45 of the same size and in mesh so that the
URE 3;
two shafts are turned in opposite directions at the same
FIGURE 5 is a sectional view through the slitter unit
rate of speed. The drive to these shafts is accomplished
taken substantially along line 5-5 in FIGURE 4;
from the drive shaft 16 to a gear 46 within the frame part
FIGURE 6 is a fragmentary sectional view taken gen
36 having a direct mesh connection with the gear 44 on
erally in a horizontal plane and along line 6-6 in FIG 70 the lower stub shaft 25. Gear 46 is equipped to slide
URE 5; and
along the drive shaft 16 maintaining its connection with
FIGURE 7 is a fragmentary view of superposed strips
the keyway 17 therein.
3,039,345
4
3
One of the features of the present invention has to do
with the control of the stationery at the moment slitting
occurs. Herein, this control is accomplished by an engage
ment of the slitting mechanism with the perforate feed
band on the stationery. Speci?cally, this control is ac
complished by the provision of pin wheel 47 secured to
blade has its cutting edge just slightly above the pitch
diameter of the pin wheel surface. It is desirable that
the stationery secured to the pin wheels by the pins
impaling the perforations, should remain tightly under
the control of the pins. This is accomplished in part by
causing the slitting blades to overlap entirely Within the
projection of the pin wheel itself. That is to say, the
lower blade does not project above the pin wheel and
the upper blade overlaps the lower below the surface
surface 50 on the wheel. The .cover members have a
groove 51 in their lower part to ?t over the pins as the 10 of the wheel. In addition to the slitting blade location,
the cover members are recessed immediately over the
wheel revolves so that the stationery is con?ned between
path of the pins, thus, in effect, aiding to maintain the
the periphery of the wheel and the covers when the slitter
stationery on the pins. These structures cooperate to
is in operative condition. The perforate feed brands en
maintain the stationery under positive control just prior
gaged by the pin wheel are intended to be severed from
the stationery and de?ected to waste. Referring to FIG 15 to the slitting operation. It has been found that an ab
solutely straight edge is obtained and the usual wave
URE 7, the feed band F is shown de?ected from the
cut is avoided.
stationery S and in FIGURE 5, as passing downwardly in
the shaft by set screw 48 and having a plurality of pins
49 extending outwardly from an outer circular peripheral
The foregoing detailed description has been given for
the direction of the arrow 51.
To provide the slitting, a pair of cooperating sharpened
slitting blades are mounted upon the stub shafts. The
lower blade 55 is an annular sharpened blade secured to
a sleeve 56 by a plurality of screws 57.
The sleeve is
movable on the stub shaft and connected thereto by the
key’ 58 and secured in position by a set screw 59‘. The
blade is preferably a heat-treated steel having Rockwell C
scale hardness of around 62 or 63. Also, preferably the
blade is given a slight undercut on the sharpened side
which faces the free end of the stub shaft 25.
The cooperating upper slitter blade 60 is also a circular
blade annular in form with its sharpened edge 61 facing
the supported end of the stub shaft 39. The blade is
similar to the blade 55 so that the hollow-ground edges
of the blades face each other in cutting relation. " The
upper blade 60 is supported on a sleeve 62 by a plurality
of screws 63 and the sleeve is slidably connected to the 35
shaft 39 by the key 64. A collar 65 with a knurled outer
surface is secured to the shaft by a set screw 66 for re
ceiving and retaining one end of a compression coil spring
67 urging the upper blade against the lower. The collar
is appropriately recessed and the sleeve 62 has an exten
sion 68 to keep the spring in proper alignment.
The overlap of the cutting blades is positioned as best
seen in FIGURE 5 to be exactly opposite the point of
deepest penetration by the pins 49 of the pin wheel into
clearness of understanding only and no unnecessary limita
tions should be understood therefrom for some modi?ca~
tions will be obvious to those skilled in the art.
I claim:
1. A slitter for slitting stationery adjacent a row of
perforations in the stationery comprising: a pair of spaced
driven shafts; a pin wheel having outwardly extending
pins thereon mounted on one shaft to engage the perfora
tions in said stationery to positively advance the same
between said shafts; a ?rst disc type cutting blade mount~
ed adjacent the pin wheel on said one shaft and having
a cutting edge at the periphery of the wheel; a second
disc type cutting blade mounted on the other shaft and
having a cutting edge overlapping the edge of the ?rst
blade in cutting contact therewith, said shafts turning the
cutting blades and pin wheel at substantially the same
peripheral speed to positively slit the stationery adjacent
the pin wheel engagement with the stationery.
2. A slitter for removing a perforate feed band from‘
strips of stationery and thelike, comprising: a pair of
driven shaftsv spaced apart for passage of a strip there‘
between; a pin wheel including a plurality of outwardly
extending pins secured to one of the shafts to engage the‘
perforate feed band and positively feed the strip between
the shafts; a ?rst disc type slitting blade mounted on said
one shaft beside the pin wheel and having a cutting edge
the stationery. The guide path for the stationery allows
generally aligned with the periphery of the wheel; and
the pins to enter the perforations and control the stationery
in its passage through the device. The slitting occurs
a ‘second disc type slitting blade on the other shaft in
cutting contact with the ?rst blade at a position beside
where the blades overlap exactly opposite the point of
deepest penetration of the pins into the stationery and
the engagement of the pin wheel with the feed band
whereby the strip is slit while held on said pin wheel.
while there is thus the greatest control of the stationery. 50
3. A slitter unit for use in slitting stationery and the
As a result of this construction, it has been found that
like, comprising: a frame having openings therein for
an extremely straight line of cut is obtained in either va
mounting the frame upon supporting rods; a pair of gen
single stationery strip or a plurality of superposed strips.
erally parallel stub shafts in said frame with gears driv~
The drive to the slitting blades is such that their peripheral
ingly connecting the shafts; a pin wheel including a plu~
speed is the same as that of the pin wheel, and thus the
rality of outwardly extending pins secured to one of the
same as the advancing speed of the stationery.
shafts to engage feed perforations in the stationery to
Following the slitting operation, the severed margins
positively advance the same; a ?rst disc type slitting blade
may be de?ected by a spring ?nger 70 held on a detent 71
mounted on said one shaft to one side of the pin wheel
in the forward cover 32. The ?nger is retractible when
and having a cutting edge at the periphery of the wheel;
not desired or needed for use.
a second disc type slitting blade mounted on the other
Adjustments in the position of the slitting blades may
easily be accomplished by swinging the covers 31 ‘and
shaft in overlapping cutting contact with the ?rst blade;
means for driving said shafts and said gearing turning
said cutting blades and pin wheel at generally the same
32 upwardly to expose the blades. The lower collar or
sleeve 56 is adjusted in position relative to the pin wheel,
peripheral speed.
and a similar adjustment is made in the position of the 65
4. A slitter as speci?ed in claim 2 wherein the second
upper collar 65 so that a proper spring compression is
slitting blade is yieldingly urged against the ?rst slitting
maintained on the upper blade.
Should the upper and
blade so as to maintain said contact between the blades.
lower shafts be slightly out of alignment, the urging
5. A slitter- as speci?ed in claim 2 wherein. the ?rst
slitting \blade is supported on a sleeve in turn secured to
the one shaft, said sleeve being movable along the one
of the upper blade against the lower will maintain a proper
cutting relation. The cutting blades always move at the
same speed as the paper and thus do not tend to drive
shaft to vary the distance between said pin wheel and
or pull the paper off line. In the pas-t, cutting blades
slitting blade, said second blade being movable along the
have generally been driven much faster so that such pull~
other shaft to maintain cutting contact with said ?rst
blade.
ing occurs when the blades become dull.
It will be noted in the drawings that the lower slitting 75
6. A slitter for removing a perforate feed band from
3,039,345
5
6
strips of stationery and the like, comprising: a pair of
driven shafts spaced apart for passage of a strip there
in said perforations whereby the strips are slit while held
on said pin wheel; and means for driving said stub shafts,
pin wheel and slitter blades.
between; a pin wheel mounted on one shaft and having
generally radially extending pins adapted to engage the
perforations in the feed band to‘ positively advance the
strips; a ?rst disc type slitting blade having a sharpened
11. A slitter unit as speci?ed in claim 10 wherein the
frame has a base section and a pair of cover sections, the
upper surface of the base section and the lower surface
of the cover sections being spaced to form said guide
means directing the strips to the pin wheel, said cover
eter of the pin wheel and spaced laterally of the wheel
sections when closed enclosing said slitter blades.
to engage the strips at a desired line of slitting; means
12. A slitter unit as speci?ed in claim 10 wherein the
for rotating the ?rst slitting blade with the pin wheel and 10
frame has a plurality of gears therein joining said stub
at the same speed; a second slitting blade mounted on
shaft and drive shaft with a keyed connection between
the other shaft and having a sharpened cutting edge en
cutting edge substantially positioned at the pitch diam
gaging and slightly overlapping the cutting edge of the
?rst blade; and means for driving the second slitting
blade at substantially the same peripheral speed as the
I ?rst cutting blade.
7. A slitter for removing perforate feed bands from
superposed strips of stationery and the like, comprising:
a pair of driven shafts spaced apart for passage of the
superposed strips therebetween; a pin wheel including a
plurality of pins mounted on one shaft said pins being
outwardly extending to enter perforations in said feed
bands to positively advance the stationery between said
shafts; a circular slitting blade having a supporting ‘sleeve
the drive shaft and one of said gears to permit movement
of the slitter unit longitudinally of the drive shaft and
support rod and means for locking the unit in selected
position therealong.
13. A slitter unit as speci?ed in claim 10 wherein each
slitter blade is annular and secured to a sleeve member
slidingly mounted upon its respective stub shaft for ad
justment therealong, one of said blades being secured in
position relative to its stub shaft when in use and the
other blade being resiliently yieldingly urged toward said
one blade to maintain said cutting relation.
14. A slitter unit for use in slitting stationery strips
mounted upon said one shaft and positioning the blade 25 and the like, comprising: a base frame having a lower
part with openings therein to slidingly receive a drive shaft
generally concentrically with and to one side of said pin
and a supporting rod and an upstanding part thereabove;
wheel, said slitting blade having a cutting edge generally
a pair of stub shafts journalled in said base frame, one in
valigned with the periphery of said pin wheel; a cooperat
the lower part and one in the upper part, said shafts being
ing circular slitting blade mounted upon the other shaft;
means yieldingly urging the cooperating blade into and
maintaining cutting contact with said ?rst circular slit
ting blade with a cutting edge of cooperating blade over—
lapping the cutting edge of said ?rst circular blade so
as to sever the feed band ‘from the stationery strips im
spaced and substantially parallel with gears connecting
the shafts for rotation at the same rate; gear means con
necting said drive shaft to said gears; a pin wheel secured
on the lower stub shaft for rotation therewith, said wheel
having a periphery with pins outstanding therefrom to
mediately beside the pin wheel.
engage perforations in the stationery strips to positively
8. A slitter as speci?ed in claim 7 wherein the co
operating blade is secured to a sleeve slidingly mounted
upon said other shaft, drive means connect said sleeve
advance the same; a ?rst circular slitting blade mounted
on the lower stub shaft adjacent said pin wheel and hav
ing a cutting edge generally at the level of said pin wheel
periphery and aligned therewith; a second circular slitting
and shaft and the slitting blades and pin wheel are driven
40 blade mounted on the upper stub shaft and having a
at substantially the same peripheral speed.
cutting edge overlapping the lower blade opposite the
9. A slitter as speci?ed in claim 3 in which the second
upper part of the pin wheel, said upper blade being yield
slitting blade is slidingly mounted on said other shaft,
ingly urged into cutting contact in cooperation with the
a collar is attached to said other shaft in spaced relation
lower blade; guide means for directing the stationery to
to the blade and a spring urges the blade away from the
45 said upper part of the pin wheel so that the strips are slit
collar and into contact with the ?rst slitting blade.
by said blades closely adjacent the engagement of the pin
10. A slitter unit for use in slitting stationery strips
wheel with the stationery, said gears and drive means
and the like, comprising: a frame having a pair of open
providing said pin wheel and cutting blades with generally
ings therein to receive a supporting rod and drive shaft
the same peripheral speed.
respectively therein; a pair of stub shafts journalled in
the frame and connected for rotation in unison; a pin
References (lited in the ?le of this patent
wheel secured to one shaft, said wheel having a periph
eral surface with pins extending outwardly therefrom for
engaging perforations in the stationery to be slit to posi
tively advance the same; a ?rst disc type slitter blade
mounted on said one shaft and having a cutting edge 55
extending generally in alignment with the peripheral sur
face of the pin wheel so as to avoid lifting the strips oif
the pin; a second disc type slitter blade mounted on the
other shaft and having a cutting edge contacting the ?rst
blade and overlapping a portion thereof; guide means for 60
directing strips to the pin wheel for engagement of the
pins with said perforations, said overlapping cutting edges
_ being positioned beside the area of pin wheel engagement
UNITED STATES PATENTS
1,376,264
1,663,788
2,236,366
2,241,395
2,328,582
2,329,469
2,390,907
2,399,154
2,476,326
2,796,771
Fortner _____________ __ Apr. 26, 1921
Zinmiewicz __________ .._ Mar. 27, 1928
Chapman et a1. _______ __ Mar. 25,
Egling ______________ __ May 13,
Ratchford et al. _______ __ Sept. 7,
Huck _______________ __ Sept. 14,
Winter ______________ __ Dec.
Antrim _____________ __ Apr.
Sherman _____________ __ July
Brown ______________ __ June
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25,
1941
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