Machine for Cutting Paper.
Year: 1892

page_text: Date of Application, 21st July, 1592
Complete S, ecification Left, 18th Aug., 1892-Accepted, 24th Sept., 1892
PROVISIONAL SPECIFICATION.
Machine for Cutting Paper.
I, BENJAMIN JOSEPH BARNARD MILLS, of 23 Southampton Buildings, in the
County of Middlesex, Patent Agent, do hereby declare the nature of this invention
(a communication to me from James Gabriel Pavyer, of No. 3121 Clifton Place,
St. Louis, in the State of Missouri and United States of America, Machinist) to be
as follows:-
This invention relates principally to the clamp by which the paper is held while
being cut, the said clamp having a hinged part with a wide face that is intended for
ordinary use and a narrow faced part which is used when narrow strips are cut, as
will be fully explained hereinafter. The invention also relates to the construction of
the knife operating lever bearings, the said lever and the crank, which is connected
with the knife frame, being cast integral with a tubular rock shaft having bearing
on a fixed arbor.
The table upon which the paper is laid for cutting is carried by a suitable framing,
and it is provided with a movable gauge having a screw threaded lug that works in
a longitudinal slot in the table; a gauge adjusting screw works in the said lug and
has bearings beneath the table. The screw is restrained from end wise movement
in its bearings, so that as it is turned the gauge is moved forward and backward.
The screw is operated by a hand wheel fixed thereon. No novelty is claimed in
the gauge or means for adjusting the same.
The clamp and the knife frame have bearing in standards which are connected
by a cross bar or head having a socket in which turns a clamp screw which is
furnished with a hand wheel. The hub of the hand wheel bears upon the top of a
cross bar, and a collar upon the screw bears against the bottom of the cross bar, so
that while the screw turns freely in the socket, it is restrained from vertical move-
ment. The ends of the clanip or clamp frame work in guide grooves of the
standards. The lower edge of the clamp is narrow and is adapted to bear upon a
bunch of paper and to hold it in place while being cut. Thus when the narrow
clamp edge is in position for use, the gauge may be brought very near to the knife
or cutter, and thus the paper may be cut into very narrow strips. The clamp bas
a screw threaded socket in which works the clamp screw, so that the turning of the
screw gives vertical movement to the clamp. The clamp frame has lugs giving end
bearing to fixed pins forming the pivots on which turns one member of the clamp.
This member has hinge lugs through which pass the said fixed pins, the construction
being such that the said member may be swung up on the pins from one position to
another position, and rice versa. The lower edge of the said clamp member is
flanged so as to have a broad bearing face, the flange extending beneath the edge
of the other member when in working position. There are slots in the said hinge
lugs and through the slots pass set screws that are screw threaded in the said fixed
pins or pintles. The slots extend so far around the lugs as to allow the clamp
member the described upward and downward movement. Apertures are formed in
the movable clamp member through which the heads of the set screws pass when
the said member is thrown up or down, and there are flat places on the opposite
sides of the lugs. The heads of the set screws bear against these flat places and
retain the said member in either its active or inactive position.
The knife or cutter is fixed in a frame which works in vertical guide slots of the
standards. The knife frame is supported on links so placed that when the knife is
moved to the left it descends with a shearing stroke to the safety bar of wood. let
into a recess of the table. This motion is imparted to the knife by a hand lever

page_text: connected to an end extension of the knife frame. The said hand lever is cast in
one piece with a tubular rock shaft having bearing on an arbor or spindle which
passes axially through the roller shaft, and whose ends are secured in fixed lugs of
the main frame. Upon the said tubular rock shaft is cast a crank arm that is
connected by a link to the end extension of the knife frame. The arrangement is
such that when the lever is in one position, the knife is in its upper position, and as
the lever is moved from such position, the knife is moved downward with a sliding
cut. During the descent of the knife its endwise movement is constantly increasing
relatively to its downward movement, so that the power of the lever over the knife
increases and thus the power of the lever is greatest at the time the greatest power
is needed, for the latter part of the paper is always being cut in the latter part of
the stroke. The relative power of the lever on the knife at the end of the stroke
is also increased owing to the position of the crank arm on the shaft, for as the knife
nears the end of the stroke, the movement of the crank arm relatively to the knife
is much increased with a proportionate increase of power of the lever over the
knife.
A projection on the tubular shaft has a stud that limits the backward movement
of the hand lever by impingement against a lug.
Dated this 21st day of July 1892.
D.
D. MILL,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.
COMPLETE SPECIFICATION.
Machine for Cutting Paper.
1. BENJAMIN JOSEPH BARNARD MILLS of 23 Southampton Buildings in the
County of Middlesex Patent Agent, do hereby declare the nature of this invention,
(a communication to me by James Gabriel Pavyer of No. 3121 Clifton Place,
Saint Louis in the State of Missouri United States of America Machinist) and in
what manner the same is to be performed to be particularly described and ascer-
trined in and by the following statement :—
This invention relates principally to the clamp by which the paper is held while
being cut, the said clamp having a hinged part with a wide face that is intended for
ordinary use and a narrow faced part which is used when narrow strips are cut, as
will be fully explained hereinafter. The invention also relates to the construction of
the knife operating lever bearings, the said lever and the crank which is connected
with the knife frame being cast integral with a tubular rock-shaft having bearing
on a fixed arbor.
Figure 1. is a top view of the machine.
Figure 2. is a side elevation.
Figure 3. is a detail elevation of the narrow clamp.
Figure 4. is a front elevation of the machine.
Figure 5 is a detail, vertical, transverse section taken at V V, Figure 2.
Figure 6 is a detail horizontal section taken at VI VI, Figure 5.
Figures 7 & 8 are detail, vertical, longitudinal sections taken at VII-VIII
Figure 5 showing the wide clamp in its operative and inoperative positions
respectively.
Figures 9 and 10 are detail, vertical longitudinal sectious taken at IX-X
Figure 5 showing the wide clamp in its operative and inoperative positions.
I is the frame of the machine. 2 is the table upon which the paper is laid for
cutting. 3 is a movable gauge having a screw threaded lug 4 that works in a
longitudinal slot 5 in the table. 6 is the gauge-adjusting screw working in the
lug 4 and having.bearing at 7 beneath the table. The screw 6 is restrained from

page_text: end wise movement in its bearings 7 so that as it is turned the gauge is moved
forward and backward. S is a land wheel on the screw 6. No novelty is claimed
in the range or means for adjusting the same.
9 are standards in which the clamp and the knife frame have bearing. The
standards are connected by a cross-bar or head 10 having a socket 11 in which
turns the clamp-screw 12. 13 is a hand wheel on screw 12.
The
The hub of the hand wheel bears upon the top of the cross bar 10 and a collar 14
upon the screw bears against the bottom of the cross bar so that while the screw
turns freely in the socket it is restrained from vertical movement. 15 is the clamp
or clamp-frame whose ends 16 work in guide grooves 17 of the standards 9.
lower edge 18 of the clamp is narrow and is adapted to bear upon a bunch 19 of
paper and to hold it in place while being cut. It will be seen that when the narrow
clamp edge 18 is in position for use, as indicated in Figures 5 8 and 10 that the
gange 3 may be brought very near to the knife or cutter and thus the paper may
be cut into very narrow strips. The clamp has a screw threaded socket 2 in which
works the clamp screw 12 so that the turning of the screw gives vertical movement
to the clamp.
The clamp frame 15 has lugs 21 giving end bearing to the fixed pins 22 forming
the pivots on which turns the member 23 of the clamp. 24 are hinge lugs on the
clamp member 23 and through these lugs pass the pins 22; the construction being
such that the member 23 may be swung up on the pins from the position seen in
Figures 7 and 9 to the positions seen in Figures 8 and 10 and rice versu. The lower
edge 25 of the member 23 is flanged so as to have a broad bearing face, the flange
extending beneath the edge 18 of the other member when in working position, as
scen in Figures 7 and 9. 26 are slots in the lugs 24 and through the slots pass set
screws 27 that are screw threaded in the pintles 22. The slots extend so far around
the lugs as to allow the clamp member the described upward and downward move-
ment as seen by comparing Figures 9 and 10.
28 are apertures in the clamp member 23 through which the heads of the set screws
pass when the said member is thrown up or down. 29 are flat places on the opposite
sides of the lugs. The heads of the set screws bear against these flat places and
retain the member 23 in either its active or inactive position.
30 is the knife frame working in vertical guide slots 31 of the standards. 32 is
the knife or cutter fixed in the frame. The knife frame is supported on links 33 so
placed that when the knife is moved to the left it descends with a shearing stroke
to the safety bar 34, of wood, let into a recess of the table. This motion is imparted
to the knife by a hand-lever 35 connected to an end extension 36 of the knife
frame. The lever 35 is cast in one piece with a tubular rock shaft 37 having bearing
on an arbor or spindle 38 which passes axially through the roller shaft and whose
ends are secured in fixed lugs 39 of the main frame. Upon the tubular shaft 37 is
cast a crank arm 40 that is connected by a link 41 to the extension 36 of the knife
frame.
The arrangement is such that when the lever is in the position shown in the
drawings that the knife is in its upper position and as the lever is moved in the
direction of the arrow the knife is moved downward with a sliding cut.
During the descent of the knife its endwise movement is constantly increasing
relatively to its downward movement so that the power of the lever over the knife
increases and thus the power of the lever is greatest at the time the greatest power
is needed, for the latter part of the paper is always being cut in the latter part of
the stroke. The relative power of the lever on the knife at the end of the stroke is
also increased owing to the position of the crank arm 40 on the shaft, for as the
knife nears the end of the stroke the movement of the crank-arm relatively to the
knife is much increased with a proportionate increase of power of the lever over
the knife.
42 is a projection on the tubular shaft with a stud that limits the backward
movement of the lever 35 by impingement against the lug 39.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is
1. The combination with the clamp member 15 of the hinged member 23 adapted
to be raised and lowered on the member 15 substantially as set forth.
2. In a paper cutting machine, a paper clamp consisting of a member 15 sliding
in fixed ways, and a member 23 hinged to the member 15 and having a broad base 25
adapted to extend below the lower edge of member 15 substantially as set forth.
3. The combination, in a paper cutting machine, of the clamp having a sliding
member 15 and a member 23 having slots 26 and orifices 28, and hinged to fixed
pins 22, of the member 15 carrying set screws 27 all constructed and adapted to
operate substantially as set forth.
4. The combination in a paper cutting machine of the clamp having a sliding
member 15 and a member 23 hinged to the member 15 so as to be raised and
lowered, the knife 32 and gauge 3; the clamp being constructed and adapted to
operate substantially as set forth.
5. In paper-cutting machine, the knife operating lever 35 cast integral with a
shaft forming the fulcrum of the lever and with a crank arm 40 the latter being
connected by a link with the knife, substantially as set forth.
6. In a paper-cutting machine, the combination of the knife actuating lever 35
cast integral with the tubular shaft 37 forming the fulcrum of the lever and with
the crank arm 40 connected by a link with the knife, all constructed and adapted
to operate substantially as set forth.
Dated this 18th day of August 1892
B. J. B. MILLS,
By Harris & Mills,
.
23, Southampton Buildings, London, W.C., Agents.