IMPROVEMENTS IN ROTARY FOLDING APPARATUS
Year: 1884

page_text: PRUTAL
DIECIFICATION,
I, GEORGE ASHLEY WILSON of Broad Green, near Liverpool in the county of
Lancaster, Engineer, do hereby declare the nature of my said invention for
IMPROVEMENTS IN ROTARY FOLDING APPARATUS to be as follows:-
This invention relates to apparatus for giving folds to sheets of paper trans-
versely to the direction in which the paper is travelling.
Hitherto such apparatus has consisted of two rolls or cylinders carrying gripping
and creasing blades in which the creasing blade alone projected beyond the cir-
cumference of the cylinder or roll. The above construction necessitates the giving
of a rocking notion to the creasing blade and consequently the speed at which the
folding can be effected is limited by the quickness with which the actions of
the gripper and creaser can be repeated and moreover the apparatus is noisy in
action.
Now the object of my invention is to simplify the construction of such folding
apparatus, to enable folding to be effected with greater rapidity and certainty than
heretofore and to work with comparative silence.
For the above purpose I so construct the folding apparatus that the creasing
blade may be and preferably is fixed in the roll or cylinder the grippers alone
being movable and the essential feature of my invention which enables me to carry
this improvement into effect consists in so disposing both the gripper and creasing
blades that they project equally or nearly so beyond the circumferences of the
cylinders or rolls. The cylinder or roll carrying the gripper is raised to face
the gripper and a corresponding depression is made in the cylinder or roll carrying
the creasing blade.
A further part of my invention consists in giving the requisite rocking motion
to gripper blades by means of a lever made with a curved way or slot into which
a crank or disc pin gears.
The above apparatus may be used to actuate gripping and creasing blades in
other cylinder or roll folding machinery than that above described.
Dated the twenty-fourth day of March 1884

page_text: I GEORGE ASHLEY WILSON of Broad Green near Liverpool in the County of
Lancaster Engineer, do hereby declare the nature of my invention for IMPROVE-
MENTS IN ROTARY FOLDING APPARATUS 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 apparatus for giving folds to sheets of paper trans-
versely to the direction in which the paper is travelling.
Hitherto such apparatus has consisted of two cylinders carrying gripping and
creasing blades in which the creasing blade alone projected beyond the circum-
ference of the cylinder.
The above construction necessitates the giving of a rocking motion to the
creasing blade consequently the speed at which folding can be effected is limited
by the quickness with which the action of the gripper and creaser can be repeated
moreover the apparatus is noisy in action.
Now the objects of my invention are to simplify the construction of such folding
apparatus to enable folding, to be effected with greater rapidity and certainty than
heretofore and to work with comparative silence.
For the above purpose I so construct the folding apparatus that the creasing
blade may be and preferably is fixed in the cylinder, the grippers above being
movable and the essential feature of my invention which enables me to carry this
improvement into effect, consists in so disposing both the grippers and creasing
blades that they project equally or nearly so beyond the circumferences of the
cylinders The cylinder carrying the gripper is raised to face the gripper, and
a corresponding depression is made in the cylinder carrying the creasing blade.
A further part of my invention consists in giving the requisite rocking motion to
gripper blades by means of a lever made with a curved way or slot into which a
crank or disc pin gears.
"
The above apparatus may be used to actuate gripping and creasing blades in
other cylinder folding machinery than that above described.
DESCRIPTION OF THE DRAWINGS.
Fig 1 is an Elevation, and fig 2 an end view of rotary folding apparatus made in
accordance with iny invention-a b. c are folding cylinders secured to and carried
by shafts d-c. and arranged to give two folds to a sheet of paper-g. h are the
creasing blades, secured in grooves in the cylinders by set screws & in such mauner
as to project slightly beyond the circumference of the cylinders, j. k are the folding
grippers, which like the creasing blades project beyond the circumference of the
said cylinders, l. m projections on raised portions on the cylinders to face the
grippers n. o depressions p. q are the cutting knife and recess, r. 8 are the creasing
blade and gripper for taking hold of the leading edge of the sheet and are
constructed and operated in similar manner to the folding creases and grippers
above mentioned The grippers ks-j are secured by set screws or their equivalents
to shafts carried in bearings in the ends of the cylinders; on the shafts t are lever
arnis u made at the free ends with curved slots in which work crank or disc
pins w secured to the toothed wheels x. The toothed wheels a rotate freely on
pins secured to the ends of the cylinders and gear into wheels y on the shafts def
The said wheels are held stationary by means of the sleeve and stud & secured to
any adjacent part of the framing of the machine. The action of the apparatus is
E
1

page_text: as follows: as the cylinders rotate the wheels x are carried around the fixed
wheels and are thereby caused to rotate. The rotation of the said wheels
gives a rocking motion to the lever arms and closing and opening action to
the grippers & with periods of rest for the purpose of gripping holding and
releasing the papers at the required times-On the cylinder a the gripper is shewn
as just closed, on the cylinder b the gripper is shewn as just about to open and
release the leading edge of the sheet, on the cylinder c the gripper is shewn fully
opened-It will be seen that whilst the pins ware travelling from one end of the
slot v to the other the grippers will be at rest. The length of the slot is usually
such that the grippers are at rest during about one third of the revolution of the
cylinders.
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 :-
First Rotary folding apparatus with fixed creasing blades and movable
grippers.
Second-Constructing the cylinder of rotary folding apparatus with equally
projecting creasing blades and grippers and with projections and depressions
substantially as herein set forth.
Third In rotary folding apparatus, the Combination of gripper shafts, levers
with curved slots, crank or disc pins, and actuating gear substantially as set
forth.
Fourth Actuating the grippers of rotary cylinder folding apparatus by means
of levers having curved slots in which crank or disc pins are caused to work
substantially as set forth.
Dated this 24th day of December 1884.