IMPROVEMENTS IN THE PROCESS OF CUTTING PAPER ROLLS TRANSVERSELY AND IN APPARATUS APPLICABLE THEREFOR
Year: 1884

page_text: I, WILLIAM PHILLIPS THOMPSON, Fel. Inst. P. A, of The Agency for Foreign
Patent Solicitors, 6, Lord Street, Liverpool, in the county of Lancaster, and
323, High Holborn, in the county of Middlesex, Civil Engineer, do hereby declare
the nature of the said invention for "IMPROVEMENTS IN THE PROCESS OF CUTTING
PAPER ROLLS TRANSVERSELY AND IN APPARATUS APPLICABLE THEREFOR," (A. com-
munication from abroad by Carl Milchsack of Berg Gladbach, Rheinprovinz, in the
Empire of Germany) and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
The improvement consists in cutting simultaneously several coiled paper rolls
into narrower ones, such as those applied for telegraphic writing apparatus and
other purposes, in such manner that the rotating paper-rolls R which are to be cut,
are pushed against a correspondingly long or endless knife that automatically
moves, during the cutting, contrary to the travel, of the paper rolls, and so
continuously offers a new cutting surface to the same.
The pulleys P and the shaft w are connected by belts and thus cause the
rotation of the rolls R.
The coiled paper-rolls R, which are to be cut, four for example, are situated in a
frame A consisting of a bed-plate a with spindle and bearing pieces bc, along with
which frame they receive a side movement corresponding to their length, and a
forward and backward motion corresponding to the cutting surface.
The side movement of the frame A is effected, as usual, by means of a screw
spindle e, by the revolution of which the plate a is checked on its gantree d
according to the desired width of the paper rolls (discs) to be cut.
The spindle e is turned by means of an intermediate piece o which is set in
motion, after every complete cut by means of hand lever p, or automatically by
means of suitable intermediate mechanism after the return of the frame A, from
the machine. An exactly equal thickness of the separated paper rolls results by
a constant stroke of the lever p.

page_text: .
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By replacing two or more of the toothed wheels a b c d (Figures 1 and 2,
Sheet 3) by other ones with a smaller or greater number of teeth, it is possible to
alter the extent of the rotation of e, also the extent of the side movement of A
and the width of the disc to be cut off at each stroke of the lever may be altered.
The constant longitudinal movement can also be attained, to any desired degree by
the interpolation of a common dial and usual appurtenances.
The gantree & carrying the frame A with the paper rolls R is provided with
slides for the forward and backward travel and has an intermittent to and fro
motion, slow during the forward travel (that is during the cutting operation) and
quick during the backward travel, which motions are effected as follows:
The two pulleys Z and Z¹ (see sheet 4) rotating loose on an axle, but being one
of them fixed firmly to toothed wheel a² and the other to wheel c², support a belt
coming down from a communicator arranged on the ceiling, which belt, according as
to whether it passes over the one pulley Z or the other Z1 puts a shaft w, which is
fixed under the said discs, and in connection with the discs m, either in rapid
rotation in one direction or in slow rotation in the other direction.
This result is attained by the tooth-wheel a³ gearing directly into a large
'wheel b fixed on the shaft w, while the wheel c² operates only by means of an
intermediate wheel d², upon a small wheel e² fixed on w.
On this shaft w are furthermore two adjustable tappets ff, which press down
an oscillating lever gå to one or the other side before a full rotation is finished.
A fork in connection with this lever, swings therewith, whereby the belt is
shifted from one pulley Z or Z¹ to the other; the rotation of the shaft w is thus
regularly reversed. The oscillating motion resulting therefrom is of course also
communicated to the pulleys m, which are provided with a square die turning on
a round pivot. The die can be placed by means of a screw spindle 22 at any
required distance from the centre and slides, when the lower shaft is rotating in
the slit of a lever n, whereby the latter is moved forward and backward, according
to the eccentricity of the square die. The slow forward and quick backward
motion resulting from the above described arrangement is transmitted by means of
two rods K to the lever provided with toothed sectors h, which gear together
with racks of the gantree d and cause thus the above mentioned forward and
.backward motion of the paper rolls R.
The discs m and the tappets f'f' are so arranged that the motion is reversed at
the so-called dead points of the levers n and thereby the course of the gantree d,
carrying the frame A with the paper rolls R exactly limited.
These motions may be regulated according as it may be desired to alter the
speed or depth of cut, by changing the bands on the stepped pulleys or by
altering the eccentrics m.
The cutting mechanism consists either of a straight knife of length pro-
portionate to the number of paper rolls to be cut, and preferably suspended by
a chain or band passing over pulley t, or it may consist of an endless knife
band & running over rolls t.
In the first case, the other end of the chain or band is secured to a weight which
is released, when the knife comes in contact with the paper.rolls, causing the blade
'to have an upward motion during the cutting process (sheet II Fig 2) If an
endless band be employed, it is moved in the same direction by actuating the
pulley by suitable gearing.
In order to prevent bulging of the knife s through the pressure of the paper
rolls R, which press forward during the cutting, it is held against these in a suitable
manner, for instance, by means of correspondingly long slotted side pieces x, and
it is secured against being thrown out by guide rolls which press against it at
the side and from the rear, as clearly shown in the drawings (sheet 3, Figures 3, 4
and 5).
The piece x is sloped off in such a fashion, that the cut paper rolls (discs) which
in consequence of their rotation and of the slant of the knife, become dished
outwards, are not pressed sheet 3, Figure 3.

page_text: The knife band 8 runs in a direction likewise opposed to the rolls R, and some-
what sloping out and has besides a sharpening appliance at y, which is to be set
in action simultaneously with the revolution of the knife so that the latter can
be sharpened as required.
By the hitherto known means for cutting narrow paper rolls, a single paper roll
only can be cut at each time and that with a great expenditure of time, an exact
knowledge of the work and considerable practise in the saine.
My invention has the indisputable result, that at each operation several paper
rolls are simultaneously cut with very little expenditure of time, and without any
knowledge of the work, or dexterity.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, as communicated
to me by my foreign correspondent, I declaro that what I claim is
1st The process of simultaneously cutting up any desired number of paper rolls
into narrower ones (discs or endless strips) by means of pushing the same, whilst
they are all turning in the same direction, against a correspondingly long or endless
knife a which moves automatically, during the cutting, in a direction contrary to
the course of the paper rolls.
2nd The arrangement of a frame A, movable sideways and forwards and
backwards for the simultaneous reception of several coiled paper rolls R, and of
a correspondingly long or endless knife 8, which, the one as well as the other
assumes, in the moment of contact, a motion in a direction opposite to that of the
paper rolls, with the object of opposing to the forward pressing and also rotating
paper rolls R during the cutting operation, a continually fresh cutting surface.
220
day of August 1884.
WP. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Agents for the Applicant.