Improvements in or applicable to Sheet Folding Machines.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in or applicable to Sheet Folding Machines.
We, HERBERT JAMES SALMON of Woodley Iron Works, near Stockport, in the
County of Chester, Engineer, JOHN CAPPER and JAMES DEAVILLE of the same place,
Engineers, do hereby declare the nature of tho said invention, to be as follows:
Our invention relates to improved combinations applicable to sheet folding
machines, by which the folded sheet after it has received its last fold and while it is
in motion being delivered, is cut into two or more parts as required, and our invention
in carrying out this object consists in combining with the mechanism delivering the
sheet at the last fold to be given to it, one or more pairs of rotary disc cutters or
shears driven from some convenient rotary part of the machine the peripheral velocity
of the cutters being the same as that of the folded sheet when being delivered. When
two or more pairs of disc cutters are used, the discs on one shaft giving rotation to
one set of discs are or may be made adjustable by screws on the shaft and are then
fixed, the corresponding set of discs on the other shaft are or may be arranged to
be rotated on the shaft but so as to slide upon it so that the sides of their edges which
come together in cutting will be pressed against their corresponding discs on the
other shift each by an helical spring and an adjusting screw upon the shaft
or axis.
When the folded sheets are to be delivered and cut after the second fold the
disc cutters are in bearings on vertical axes or shafts, and when to be delivered
further folded and then cut the plane of the folded sheet being then horizontal, the
axes of the shafts for the disc cutters are also horizontal.
1000
PETER J. LIVSEY,
Agent.
Improvements in or applicable to Sheet Folding Machines.
We, HERBERT JAMES SALMON of Woodley Iron Works, near Stockport, in the
County of Chester, Engineer, JOHN CAPPER and JAMES DEAVILLE of the same place,
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 applicable to sheet folding
machines, by which the folded sheet after it has received its last fold and while
it is in motion being delivered, is cut into two or more parts as required, and our
invention in carrying out this object, consists in combining with the mechanism
delivering the sheet at the last fold to be given to it, one or more pairs of rotary disc
cutters or shears driven from some convenient rotary part of the machine the
peripheral velocity of the cutters being the same as that of the folded sheet when

page_text: being delivered. When two or more pairs of disc cutters are used, the disc on one
shaft giving rotation to one set of dises are or may be made adjustable by screws on
the shaft and are then fixed, the corresponding set of dises on the other shaft are or
may be arranged to be rotated on the shaft but so as to slide upon it so that the
sides of their edges which come together in cutting will be pressed against their
corresponding discs on the other shaft each by an helical spring and an adjusting
screw or collar upon the shaft or axis.
When the folded sheets are to be delivered and cut after the second fold the disc
cutters are in bearings on vertical axes or shafts, and when to be delivered further
folded and then cut the plane of the folded sheet being then horizontal, the axes
of the shafts for the disc cutters are also horizontal.
Fig. 1, is an elevation partly in section, the section being in a plane at a right
angle to the axes of the third and fourth folding rollers, the fourth fold being made
downwards parallel to the third fold.
Fig. 2, is a view in the same plane as Fig. 1, of part of the machine showing how
the fourth fold is made upwards also parallel to the third fold.
Our invention will he illustrated by reference to these figures.
a, is the framing of the machine; b, is one of the hinged tables upon which the
paper to be folded is placed for the first fold. The sheet descends vertically, being
carried by tapes from the first pair of folding rollers until the first fold comes against
a stop, when the second fold is made, the knife for which, drives it between the
second folding rollers, the axes of which are in a vertical position, and it is carried
by tapes from them, along the vertical face of the plate a", baving a slot a, in it, until the
second folded sheet comes against a stop when the third folding knife drives it through
the slot a, and between the third pair of folding rollers l, from which the third
folded sheet is carried horizontally by tapes to the fourth pair of folding rollers
and the axes of which are horizontal and in the same plane as the third folding
rollers, consequently the third folded sheet receives its fourth fold parallel to the
third fold.
The third folded sheet is carried by endless tapes over the surface of the
table '.
The lower set of tapes, extend from the lower folding roller to the nearest fourth
folding roller (r) and the upper set of tapes r, extend from the upper third folding
roller to a tape carrying roller, in bearings near the folding roller r.
The third folded sheet is carried by the tapes over the fourth folding rollers and
, until it comes against an adjustable stop, on the table ad, when the knife 4, drives
it downwards between the fourth folding rollers and
The knife, is carried by arms s, on the shaft, in bearings on the framing, and
is actuated in an ordinary manner.
In the modification iflustrated by Fig. 2, the lower set of tapes from the third
folding rollers pass round an endless tape or string, carrying roller a, nearly under
the fourth folding roller r, which is nearest the third folding rollers, and the upper set
of tapes, pass from the upper third folding roller to the nearest fourth folding
roller, so that the third folded sheet passes under the fourth folding rollers' and
and then over a table a, to an adjustable stop ..
The fourth fold is driven by the knife , upwards between the folding rollers r
and r¹.
There is a lower set of carrying strings or tapes from the folding roller, to a tape
or string currying roller, and another set of tapes or strings from the folding
roller r, passing against the roller r, then against the roller, under the roller, and
back over the rollers and 9, to the roller r.
pass
it
Thus arranged the up folded sheet is carried to rollers, and, which
vertically downwards in front of the pusher t, for a packing box with prongs t
A similar arrangement of packing box with prongs being used for sheets having the
fourth fold parallel to the third downwards shown in Fig. 1, which packing box
mechanism is of well known ordinary arrangement.
Our present improvements-illustrated as applied to cutting the folded sheets while

page_text: being delivered after being folded, either with an upward or downward fold, will be
readily understood from the following explanation.
Two parallel shafts u and u', are placed in Fig. 1, near to and parallel to the folding
rollers and, in suitable bearings on the framing, and in Fig. 2, the shafts u
and u', are placed near and parallel to the rollers. and .
These shafts have each a disc cutter u³, secured upon them, so that their edges
overlap and their disc faces come close together, when the folded and delivered sheet
is to be cut into two parts. But if the folded sheets are to be cut into two or more
parts there are as many other pairs of disc cutters at the required distance apart on
the same shafts u and u¹. One of the shafts for the disc cutters may be screw threaded
and the hole in the boss of the cutter which passes on to the shaft is screw tapped to
fit and screw on to the shaft and when the disc is in the correct position it is locked
by a lock nut also screwing on to the shaft and screwing against the boss of the disc
cutter screwed thereon.
The shaft for the corresponding disc is or may be made with a key groove in its
lengthway and the disc cutter or cutters are bored out to fit the shafts and are
prevented from rotating upon it by a key secured in the boss of each cutter (if more
than one) which can slide on the shaft and are or may be acted upon by a helical
spring on the shaft, one end of which abuts against an adjustable collar secured on the
shaft and the other end abuts against the boss of the cutter to keep the edge of its
cutting face against that of the cutter fixed on the other shaft.
Each pair of cutters if more than one are arranged as above described, or in any
other ordinary and convenient manner.
The peripheral velocity of the cutters u and ', is that of the folding or delivery
rollers andor and , or that of the sheet as delivered, or one cutter may
be a little larger in diameter than the other thus having a little excess of peripheral.
velocity.
The disc cutter shafts u and u¹, are geared together by equal spur wheels and one
of them is geared by an intermediate wheel (u) with one of the folding rollers (*¹) in
Fig. 1, and one of the delivery rollers (7) in Fig. 2.
A similar arrangement of cutters and shafts are used when to cut folded sheets
delivered in a vertical plane, in which case supplementary strings or tapes are or may
be employed to carry the severed sheets to the delivery.
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.
The combination of rotary disc cutters with folding machines for cutting the sheets
folded by the machine into two or more parts when being delivered, substantially as
herein before described and illustrated by the drawings.
Dated this Twenty-second day of April 1897.
PETER J. LIVSEY,
Agent.