Improvements in or applicable to Guillotine Machines for Cutting Paper, Cloth, and like Materials.
Year: 1892

page_text: Date of Application, 5th Aug., 1892
Complete Specification Left, 28th Apr., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
Improvements in or applicable to Guillotine Machines for Cutting
Paper, Cloth, and like Materials.
We, HERBERT JAMES SALMON of the firm of James Salmon & Son, of Woodley
Iron Works, Woodley, in the County of Chester, Printers' Engineers, JOHN
CAPPER, and WILLIAM HENRY DUFFETT, at the said Works, Engineers, do
hereby declare the nature of the said invention to be as follows :—
Our invention relates to improved combinations and arrangements for auto-
matically actuating the part (which may be termed the presser) that acts upon and
holds the material while being cut by the guillotine knife.
We arrange a shaft in bearings in the presser, and place two helical springs upon
it acting by torsion, and the two ends of the springs that come nearest are connected
by preference with a worm wheel that has its axis upon the said shaft, and this
worn wheel gears with worm on a short shaft in bearings, in the presser, so that
by rotating the worm the springs may be partly rotated round the shaft, to give
more or less elastic pressure as required.
Each of the other ends of the two springs are connected with the boss of a lever,
having its axis loose upon the said shaft or fast upon the said shaft if loose in the
presser.
These levers are arranged so that when lifted to a given height or position,
they come against a stop on the presser but they are free to move in the opposite
direction to any desired extent.
To the end of each lever, the upper end of a rod is jointed, the lower end of each
rod being jointed to one end of a cross beam, to the middle of which, one end of a
connecting rod is jointed, the other end of which is jointed to a crank pin in a disc
on the shaft, that actuates the guillotine knife, consequently the presser will be
lifted
materi and down to a given extent, when the driving shaft is rotated, but when
to be cut is placed under the presser it comes upon it, and as the presser
cannot then descend lower than the upper surface of the material the springs allow
the levers acting upon them to give way and this puts pressure upon the material
to a greater or less extent, according to the thickness of the material acted upon.
There may, in some cases, be one spring, or more than two, and two or more
springs one within the other, or two or more sets of springs on two or more shafts
in the presser, and the levers acting upon the springs need not come against a stop
on the presser when in their highest position but instead projections from the rods
actuating the levers may be arranged to come against the presser in the highest
position of the levers and lift it. Instead of levers for actuating the springs there
may be segments of spur wheels gearing with rack teeth on the actuating bars
or rods.
Instead of the movement being produced by a crank pin there may be a bowl on
the crank pin acting upon a curved slot in a lever connected with the cross beam
and instead of a crank pin a cam may be used ou the shaft which actuates the
guillotine knife.
Anti-friction bowls or rollers are or may be used to take any lateral strain upon
the presser in its guiding grooves.
Dated this Fourth dex of August 1899

page_text: COMPLETE SPECIFICATION.
Improvements in or applicable to Guillotine Machines for Cutting
Paper, Cloth, and like Materials.
We, HERBERT JAMES SALMON, of the firm James Salmon & Son, of Woodley
Iron Works, Woodley, in the County of Chester, Printers' Engineers, JOHN
CAPPER and WILLIAM HENRY DUFFETT, at the said Works, Engineers, 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:—
Our invention relates to improved combinations and arrangements for auto-
matically actuating the part (which may be termed the presser) that acts upon and
holds the material while being cut by the guillotine knife.
We arrange a shaft in bearings in the presser, and place two belical springs
upon it, acting by torsion, and the two ends of the springs that come nearest are
connected by preference with a worm wheel that has its axis upon the said shaft,
and this worm wheel gears with a worm on a short shaft in bearings, in the
presser,
so that by rotating the worm the springs may be partly rotated round the shaft, to
give more or less elastic pressure as required.
Each of the other ends of the two springs are connected with the boss of a lever,
having its axis loose upon the said shaft or fast upon the said shaft if it is loose in
the presser.
These levers are arranged so that when lifted to a given height or position, they
come against a stop on the presser, but they are free to move in the opposite
direction to any desired extent.
To the end of each lever, the upper end of a rod is jointed, the lower end of each
rod being jointed to one end of a cross beam, to the middle of which, one end of a
connecting rod is jointed, the other end of which is jointed to a crank pin in a disc
on the shaft, that actuates the guillotine knife, consequently the presser will be
lifted up and down to a given extent, when the driving shaft is rotated, but when
material to be cut is placed under the presser it comes upon it, and as the presser
cannot then descend lower than the upper surface of the material being cut the
springs allow the levers acting upon them to give way and this puts pressure upon
the material to a greater or less extent, according to the thickness of the material
acted upon.
There may in some cases, be one spring, or more than two, and two or more
springs one within the other, or two or more sets of springs on two or more shafts
in the presser, and the levers acting upon the springs need not come against a stop
on the presser when in their highest position but instead projections from the rods
actuating the levers may be arranged to come against the presser in the highest
position of the levers and lift it. Instead of levers for actuating the springs, there
may be segments of spur wheels, gearing with rack teeth on the actuating bars
or rods.
Instead of the movement being produced by a crank pin there may be segments
of spur wheels, gearing with rack teeth on the actuating bars or rods.
Instead of the movement being produced by a crank pin there may be a bowl on
the crank pin, acting upon a curved slot in a lever connected with the cross beam
and instead of a crank pin a cain may be used on the shaft which actuates the
guillotine knife.
Anti-friction bowls or rollers are or may be used to take any lateral strain upon
the presser in its guiding grooves.
Fig. 1, is a side elevation of so much of a guillotine machine for cutting paper and
similar materials as will be necessary to explain our invention.
Fig. 2, is a front elevation of parts of the machine.
a, is a part of the side framing; b, is the plate or beam to which the cutting

page_text: knife b, (see Fig. 1) is secured, which beam can slide up and down and move
laterally in slideways in the ordinary manner.
C, is part of the table of the machine upon which the material to be cut is
placed.
d, is the presser, the beam or bar extending across the machine between the side
frames (a), it is arranged to move up and down in slides in the usual manner and its
lower face comes upon the upper surface of the material to hold it down while
being cut.
This presser d, is formed with three bearings one (d¹) at each end and one ³, in
the middle, for a shaft shown in dotted line.
Loose upon the shaft, so as to partly rotate upon it are two helical springs e,
one on the right and the other on the left side of the machine.
Loose also on the shaft 3, close to the middle bearing for it, there is a worm
wheel el, (one on each side of the bearing d) which can rotate upon the shaft d³,
and with each of these worm wheels a worm e³, gears, which is upon a short shaft
or on pivots having bearings in the presser bar d, each worm fitting a recess in
the presser bar d, so that while it can be rotated freely (by a square formed on
one pivot) it cannot move endways. By means of these worms 2, the worm
wheels e', are rotated and the tension on the springs e, is adjusted, the worms
holding the wheels (and thus that end of the springs) in any position in which they
are left. The boss of each worm wheel e', is formed to engage with the end of the
helical spring e, nearest to it, and the other end of the helical spring is made to
engage with one side of the boss (ex) of a lever e³, free to oscillate on the shaft d³,
(or the levers es, may be fast to the shaft d³), the bosses of which levers e³, being
formed to engage with the other ends of the helical springs.
As shown the levers ³, act when made to oscillate downwards from the position
in which they are shown in the drawings to partly unwind the coils of the helical
springs e, but if desired, by making suitable hook or other connections between the
ends of the springs and the levers e³, and worm wheels e¹, the downward movement
of the levers e, may be made to wind up the coils of the springs.
Through a hole in the end of each lever e³, a cross bar et, passes, at each end of
which the upper end of a rod e', is jointed, the lower end of which rod is jointed to
a pivot e, on the end of a cross bar e', the ends of which can slide up and down
vertically in suitable guides a¹, attached to the framing u.
To the middle of this cross bar e', one end of a short link e, is jointed at e³, the.
other end of which is jointed to a crank pin fi, in a disc, secured on the end of a
shaft, which may be the shaft f, actuating the cutting knife or a shaft rotated at
the same speed.
When the cutting knife ascends the upper ends of the two levers e³, ascend and
turn on their axis until their back edges come against a stop d (one for each
lever) on a projection from the presser d, about which time it will have been lifted
to its highest position, then when the knife begins to descend or a little before, the
ends of the levers e³, descend and with them the presser d, until its under surface
comes upon the material to be cut which arrests its further descent, and as the
levers then turn on their axis d' by the pull of the bars es, they act upon the
coils of the springs e, and put pressure upon the material to the desired extent,
then when the crank pin f, begins its ascent, the levers e³, ascend, and lastly the
presser d, until it has attained its highest position ready for another cut.
A modification is or may be made, by dispensing with the levers e, and connected
parts, except the boss parts (ex) of the levers e, which engage with the helical
springs e, which boss parts ex, are secured to the shaft d', the ends of which come
through slots made in the side frames a, and upon each end of the shaft d³, outside
the side frames, toothed wheels (say of cast steel or malleable metal) are secured,
or segments of toothed wheels each of which is arranged to gear with a vertical
toothed rack projecting upwards from the ends of the cross bar e', and which may
be rigidly connected therewith, and arranged to work up and down in suitable
guides on the framing.

page_text: There is a projection from each toothed rack to come against the underside of
the shaft d, and lift it and consequently the presser when the toothed racks are
in their highest position.
Instead of the ends of the shaft ³, passing through slots in the side frames.there
may be an arm from each boss part ex, as above referred to, bent to come forward
and then sideways in front of and past the edges of each of the side frames, and to
the outside thereof, to carry the toothed segment which is to gear with the vertical
toothed racks from the bar e.
If desired the spring arrangement (e) above described and illustrated by Figs. 1
and 2, may be placed between the side frames a, under the table c.
In such case there would be a cross bar corresponding to the presser d, (but not
acting as the presser) in suitable vertical guides on the framing, and this cross bar
would be connected by a rod or upward projection from each end with an ordinary
presser to act upon the material on the table c, while being cut.
The rods or connecting upward projections could each pass in a hollow in each
side frame from the cross bar below the table c, to the presser, or could pass outside
the side frames to the
presser d.
Each end of a cross bar corresponding to the cross bar e', would then be arranged
to slide up and down in suitable guides in the framing and near each end of the
cross bar there would be a toothed rack arranged to gear with a toothed wheel or
segment taking the place of the boss of the levers.
The cross bar in this case corresponding to the bare, having the toothed racks
would be actuated by a crank pin f¹, and connecting link e, as herein before
described in reference to Figs. 1 and 2.
Other modifications and variations may be made from that herein before described
and illustrated by Figs. 1 and 2, without departing from the main features of our
invention.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is.
1. In machines for cutting paper and other materials the use of one or more
helical springs made to operate by partly rotating or twisting them on their axes
for putting holding down pressure upon the "presser" while the material is being
cut substantially as hereinbefore described and illustrated by the drawings.
2. The combination of helical springs, with the presser (d) of machines for
cutting paper and other materials and wich mechanism for actuating the same
substantially as hereinbefore described and illustrated by the drawings.
3. The combination referred to in Claim 2 when toothed racks and wheels are
substituted for the levers e³, rod et, and rods e³, and also when the springs (e) and
shaft d, are placed under the table substantially as hereinbefore described.
Dated this Twenty-seventh day of April 1893.
PETER J. LIVSEY,
Agent.