Improvements in Paper Slitting Machines.
Year: 1899

page_text: Date of Application, 11th July, 1899-Accepted, 16th Sept., 1899
Improvements in Paper Slitting Machines.
I, CHARLES BECK, of 609, Chestnut Street, Philadelphia, County of Philadelphia,
State of Pennsylvania, United States of America, Manufacturer, do hereby declare
the nature of this invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement:-
This invention relates to rotary paper-slitting and rewinding machines and
has for its object the general improvement of the construction and operation of
such machines in the following respects-
1st. To so arrange the parts of the machine that the unwinding beam, the
three re-winding shafts, and the starting and stopping mechanism shall all be
on the front of the machine within range of vision of the operator at all times.
2nd. To provide improved tension and shaft adjusting means for the unwind-
ing beam.
3rd. To provide improved tension adjusting means for the rewinding shafts.
4th. To provide improved bearings for the rewinding shafts.
5th. To provide improved means for rendering the upper feed roll casily
removable.
6th. To provide improved cutter disks and attached mechanism.
7th. To provide improved adjustable bearing-washers for the cutter shafts.
With these objects in view, my invention consists in the improved construc-
tion, arrangement and combination of parts hereinafter fully described and after-
wards specifically pointed out in the appended claims.
In the accompanying drawings,
Figure 1 is a perspective view of a machine constructed in accordance with my
invention.
Figure 2 is a detail sectional view of the tension mechanism of the rewinding
shafts.
Figure 3 is a transverse sectional view of the same on the broken line 3-3
or Figure 2.
Figure 4 is a detail view of the clamp-carrying arm, detached.
Figure 5 is a detail sectional view of the tension and shaft adjusting mechanism
of the unwinding shaft.
Figure 6 is a transverse sectional view of the same on the broken line 6-6
of Figure 5.
Figure 7 is a fragmentary perspective view of the connecting portions of the
lamps shown in Figures 5 and 6.
Figure 8 is a partly sectional view of the feed rolls and their adjusting
mechanism.
Figure 9 is a view, in side elevation, of the parts shown in Figure 8.
Figure 10 is a sectional view illustrating the roll removing mechanism in its
olding position.
Figure 11 is a sectional view illustrating the removable upper bearing for the
ewinding shafts.
Figure 12 is a view of the same parts in side elevation.
077
DI Figure 2.
Figure 4 is a detail view of the clamp-carrying arm, detached.
Figure 5 is a detail sectional view of the tension and shaft adjusting mechanism
of the unwinding shaft.
Figure 6 is a transverse sectional view of the same on the broken line 6-6
of Figure 5.
Figure 7 is a fragmentary perspective view of the connecting portions of the
clamps shown in Figures 5 and 6.
Figure 8 is a partly sectional view of the feed rolls and their adjusting
mechanism.
Figure 9 is a view, in side elevation, of the parts shown in Figure 8.
Figure 10 is a sectional view illustrating the roll removing mechanism in its
holding position.
Figure 11 is a sectional view illustrating the removable upper bearing for the
ewinding shafts.
Figure 12 is a view of the same parts in side elevation.
... ។

page_text: Figure 13 is a perspective view of a hub and cutter disk.
Figure 14 is a sectional view of a pair of adjacent cutter disks and their hubs,
removed from the shaft.
Figure 15 a view in front elevation of two pairs of hubs and disks mounted
in operative positions.
Figure 16 is a detail view of part of the adjustable bearing for the cutter
shafts.
Like letters of reference mark the same parts wherever they appear in the
several figures of the drawing.
In the drawing, a, a¹ indicate the sides of the frame, and 6 the beam from
which the roll of paper is to be unwound, provided with a fixed hub b², this
beam being at the front of the frame. c, d and c are the rewinding shafts, the
butt or unslit portion c¹ of the roll of paper being rewound on c, and strips d', e',
on d and e. f indicates tension rolls of the well known interlocking class,
journalled in the rear of the frame, one set alternating with the other and inter-
locked by means of lever f¹; g, g' indicate shafts journalled in the frame inter-
mediate of the interlocking tension rolls f, and the front of the frame, and carry-
ing interlocking cutting disks h, h. i, ¹ (Figure 8) indicate feed rolls journalled
in front of these disks. The rolls and cutter disks are driven from a main
shaft j by a drive chain k engaging sprocket wheels c, d, e, g², and 2. The paper
starts off the unwinding beam at the front, passes through the interlocking tension
rolls at the rear, then through the slitting disks, and is finally rewound on the
rolls c, d and e at the front of the machine, the narrow strips di and e¹ being re-
wound on shafts d and e and the wider butt c¹ of the roll of paper, which requires
more tension than the strips, is rewound on shaft c the object of placing all of the
rewinding shafts at the front of the machine being to have them all under the
eye of the operator while running the machine, so that in the event of breaks,
the machine may be instantly stopped by means of treadle to avoid loss of
paper. A further advantage is that by placing the parts as herein shown, a
great saving in room is effected, the machine taking up much less floor space
which sometimes is very costly.
On the
I will now describe the tension devices of the rewinding shafts c, d and e, and
as they are duplicates, only one is shown in detail in Figures 2, 3 and 4 in which
the sprocket wheel 2 is extended to form a hub c provided with a peripheral
groove c, the sprocket and hub being loosely journalled on shaft c.
shaft a radial arm is adjustably secured by a set screw and is provided with
a hole at its outer end in which is fixed a pin 13. Clamp bars m are pivoted
together by pin 13, pass around hub in groove, and are tightened or loosened
by a set screw. The sprocket chain drives the hub and sprocket wheel and the
friction between the hub and the clamps turns the shaft when sufficiently tight,
the adjustment of the clamps allowing them to slip on the hub when necessary.
On the shaft b, (Figures 5, 6 and 7) is keyed or otherwise secured a hub b³
having a peripheral groove 64, the shaft being slidably mounted in its bearings
in the frame a. A screw threaded rod n is threaded into frame a parallel with
shaft and on this is threaded an elongated hand nut n¹ having a peripheral
groove n³.
A pair of clamp bars n³, nt encircle the hub in groove n³ and are
adjusted by screw n³. A fork 6.projecting from engages in the groove n³
of hand nut n¹.
In Figures 8, 9 and 10 I have illustrated the means for mounting the feed
rolls, Each roll has a conical recess in each end. Screws are threaded
through frames a, a, and have conical ends engaging the opposite ends of
roll. A screw is threaded through frame a¹ into the recess in one end of roll i.
A smooth pin o, slidably mounted in frame a has conical inner end engaging the
opposite end recess. The pin o is held normally in its outer position, withdrawn
from the recess, by a spring o¹ secured to the frame and engaging in a notch in
the side of the pin. The pin is beveled off at 02, the balance o³ of the end being
squared off.
A lever p pivoted to frame a has a beveled face p' and straight

page_text: face 2. To press the pin o from its withdrawn position, as in Figures 8 and 9,
to its inner position to engage the roll, as in Figure 10, the lever p is pressed
down, the bevel face engaging bevel face o of the pin and forcing it in, and
the straight face p² engaging straight end and holding it in.
The bearings of the shafts c, d and e are illustrated in detail in Figures 11
and 12 in which a is the frame having half bearings a³, c the shaft in said bear-
ing, and a the upper half bearing hinged at one end to a². A weighted handle
or lever q is pivoted to the outer end of a3 and is provided with a hook q' held
normally in engagement with a tooth or projection on the frame, by the
weight of the lever. To raise the hinged bearing it is only necessary to raise
the handle g, the first movement upward thereof releasing the hook q2 and the
further movement raising the bearing.
In Figures 12 to 16 I have shown the cutting disks and their adjusting
mechanism, in which the shafts are indicated at g, and the rotary cutter disks
at h, h. Each cutter disk is secured to one side of a hub h2 in any suitable
manner, preferably by screws or other detachable fastening devices in order that
the cutter disks may be easily removed from the hubs when necessary.
Each hub is provided with a series of segmental bearing blocks which may
form integral parts of the hub or be separate pieces firmly secured thereto. These
blocks project inwardly from the bore of the hub and also extend beyond it at
each end. Preferably these will be used on cach hub and they will be of uniform
width and be uniformly spaced apart and the space between them will preferably
be equal to the space occupied by them, or approximately so, in order that the
projecting ends of the blocks on one hub may fit snugly in the spaces between
the blocks on an adjacent hub. This is not essential, however, and more than
three blocks may be used on each hub if preferred. Each hub is to be provided
with similar devices for clamping it independently on the shaft, and in the draw-
ing I have shown set screws h for this purpose.
In operation the several hubs with their attached cutters are slipped onto the
shaft with the bearing blocks in substantial contact therewith, it being neces-
sary only to provide for sufficient looseness to permit the hubs to slide on the
shaft, and when the cutters are arranged at the predetermined distance apart the
hubs will be individually clamped on the shaft, and the cutters will be firmly
secured at a right angle to the shaft, the bearing blocks effectually preventing
any deviation of the cutter disk from its true position, it being of course under-
stood that the bearing faces of the blocks will be at a true right angle to the
cutter when the latter is secured in position on the hub.
The cutters will be firmly held in position irrespective of whether the hubs are
in contact or not and the cutter disks may thus be adjusted any desired distance
apart above the minimum and be just as effective, as the segmental bearing
blocks form part of the bearing of the hub. It is, however, in adjusting the
cutter disks to the minimum distance apart that my invention possesses its most
marked advantage, since I am enabled to get a lateral bearing for the cutter on
the shaft twice the length of the distance between the cutters without diminish-
ing the distance to which the cutter may be adjusted.
As illustrated in Figure 14, the cutter disks are as close together as it is pos-
sible to bring them, but as the bearing blocks are enabled to interlock, each
cutter disk has a lateral bearing twice the length of the distance between the
cutters. In this figure the space between the cutters is three-eights of an inch
and the length of the bearing block is three-fourths of an inch, thus adding
firmness to be hub on the shaft.
It will thus be seen that greater bearing surface is provided to securely hold
the cutter in its proper plane and at the same time the cutter disks may be
adjusted to almost any desired relative position, certainly to any position likely
to be necessary in practical operation, for it must be understood that the lengtň
of the bearing blocks may be less than indicated in the drawing and still be
effective.

page_text: On the screw threaded postions on the right hand end of shaft g and left hand
end of shaft g', inside of the frame, I have threaded rings r, preferably of
brass, split part way around to form two sections 1 and 2. This ring can be
moved outward to bear against the frames a and a respectively to bear against
the natural tendency of the shaft g to move to the right, and the shaft g to
move to the left during the cutting operation, especially when heavy stock is
being cut. A screw threaded through section and bearing against section r
serves to force the sections apart. and thus lock the ring against accidental
turning.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what
I claim is
1. In a paper slitting and rewinding machine, the combination with the frame
thereof of an unwinding beam at the front thereof, tension rolls at the rear and
rewinding shafts at the front above the unwinding beam, substantially as
described.
;
2. In a paper slitting and rewinding machine, the combination with the frame,
thereof of an unwinding beam at the front thereof, tension rolls at the rear
and rewinding shafts at the front above the unwinding beam and starting and
stopping mechanism at the front, substantially as described.
3. In a paper slitting and rewinding machine, the combination with the frame,
thereof of an unwinding beam at the front thereof, tension rolls at the rear,
slitting disks at the middle, feed rolls at the delivery side of the slitting rolls,
and rewinding shafts at the front above the unwinding beam, substantially as
described.
4. In a paper slitting and rewinding machine, the combination with the frame,
of the unwinding beam journalled therein, a hub thereon provided with a peri-
pheral groove, a screw threaded rod secured in the frame parallel with the shaft,
an elongated nut or sleeve on said rod provided with a peripheral groove, a
clamp friction bar adapted to engage half around the hub and provided with a
forked end seated in the groove of the sleeve, a second clamp lever pivoted to
the first and adapted to engage around the other half of the hub, and a clamp
screw to draw the two clamp bars together, substantially as described.
5. In a paper slitting and rewinding machine, the combination with the frame,
of a rewinding shaft journalled therein, a sprocket wheel loosely journalled on
the shaft and provided with an extended hub with a peripheral groove, a radial
arm adjustably secured to the shaft and extending beyond the periphery of the
hub, a pin secured in the arm parallel with the shaft and crossing the hub, a
pair of clamp bars pivoted together on the pin and embracing the hub, and a
screw for drawing them together, substantially as described.
of
6. In a paper slitting and rewinding machine, the combination with the frame,
of a feed roll having conical recesses in its ends, a screw threaded through one
side of the frame and having a conical end engaging in one
said recesses, a pin slidably mounted through the other side of the frame
and having a conical end adapted to engage in the other recess, a spring for nor-
mally holding the pin outward, and means for pressing and holding it inward,
substantially as described.
7. In a paper slitting and rewinding machine, the combination with the frame,
of a feed roll having conical recesses in its ends, a screw threaded through one
side of the frame and having a conical end engaging in one of said recesses, a
pin slidably mounted through the other side of the frame and having a conical
end adapted to engage in the other recess, a spring for normally holding the pin
outward, the outer end of the pin being beveled off half way across, and a lever
pivoted to the frame and having an oppositely beveled edge and straight face,
substantially as described.
8. In a paper slitting and rewinding machine, the combination with the frame
provided with an open half-bearing, of a roll adapted to be journalled therein, a

page_text: hinged upper half bearing and a weighted handle lever pivoted to the outer end
of the hinged bearing and provided with a hook engaging by gravity with the
frame under the outer end of the fixed half-bearing, substantially as described.
9. In a paper slitting and rewinding machine, the combination with the frame,
of the cutter disk shaft journalled therein and having shoulders bearing against
the inside of the housing, a ring threaded upon the shaft inside of the shoulder
split through part of its circumference, and a screw threaded through one portion
and bearing against the other to force the two parts outward and serve as a lock-
nut, substantially as described.
10. The combination in a paper slitting machine with rotary cutter disks, of
hubs to which the cutter disks are secured, said hubs having a series of seg-
mental bearing blocks projecting inwardly and laterally from its bore and extend-
ing beyond the ends thereof for perfect adjustment and alignment, substantially
as described.
11. The combination in a paper cutting machine with rotary cutter disks, of
a hub to which the cutter disks is secured, said hub having a series of segmental
bearing blocks projecting inwardly and laterally from its bore and extending
beyond the ends thereof by which the bearings are enlarged, and said blocks being
substantially uniform in size and uniformly spaced apart whereby the cutter
disks may be adjusted for the purpose specified.
12. In a rotary cutting machine of the class described, the combination with
the shaft, of a series of hubs mounted to slide thereon, each hub having a series
of segmental bearing blocks projecting inwardly from its bore, and extending
beyond its ends, the blocks on one end being adapted to interlock with those on
an adjacent hub, means to clamp each hub independently on the shaft, and a
rotary cutter secured to each hub, substantially as described.
13. In a rotary cutting machine of the class described, the combination with
the shaft, of a series of hubs mounted to slide thereon, a rotary cutter disk
secured to each hub, a series of bearing blocks on each hub having the same base
of the hub and projecting beyond the ends thereof, the blocks on one hub being
adapted to interlock with those of an adjacent hub, the cutting disks arranged
in alignment with each other, and means to clamp each hub independently to
the shaft, as described.
14. In a rotary cutting machine, the combination with the shaft, of a series of
hubs mounted to slide thereon, a rotary cutter secured to each hub, a series of
segmental bearing blocks projecting inwardly from the bore of each hub and
extending beyond the ends thereof, the blocks on the hubs being substantially
uniform in size and uniformly spaced apart to permit the blocks on one hub to
interlock with those of an adjacent hub, and means to clamp each hub indepen-
dently on the shaft, substantially as described.
1000
F. WISE HOWORTH,
46, Lincoln's Inn Fields, London, W.C., Agent for the Applicant.