A Machine for the Manufacture of Conical Shaped Paper Bags.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
A Machine for the Manufacture of Conical Shaped Paper Bags.
I GEORGE ORLANDO WOOLLEY 7 Goodyere Street Gloucester, in the County of
Gloucestershire Mechanical Engineer do hereby declare the nature of this invention
to be as follows:-
This invention relates to a machine for the manufacture of conical shaped paper
bags, known in the trade as sweet bags, of the particular shape when folded described
by the accompanying drawing. Fig. 4 represents a finished bag this shape being
considered an improvement on the ordinary triangular sweet bag. Various sizes of
bags can be made by this machine, the width of paper & the length severed
determining the size of bag. The various operations of pasting, cutting off into
lengths & folding are accomplished by an uninterupted and continuous process, from
the reel whilst the paper is in motion. For this purpose four sets or pairs of rolls are
provided.
The first pair I will term the feed rolls the second the cutting or severing rolls
the third the traversing rolls and the fourth the creasing or delivery rolls.
The paper on leaving the reel is made to pass underneath and in contact with a
revolving disc the periphery of which is kept supplied with paste from another dise
which revolves partially submerged in a trough of paste. By this means a line or
streak of paste of the width of the disc first mentioned is laid along the margin of the
paper on the upper side thereof, or that which will subsequently be the inner
surface of the bag.
The paper then passes between the feed rolls and on to the cutting rolls, where it is
cut into the proper bag lengths.
The cutting rolls sever oue length at each revolution, the length severed being
determined by their speed in relation to the speed of the feed rolls. Thus if their
speed is increased, a shorter length will be severed and a longer one if reduced,
the speed of the feed & traversing rolls remaining at one uniform rate at all
times.
The severed portion is then passed on by the traversing rolls, and on emerging
therefrom it passes between a pair of reciprocating blades which at one end are centred
at a vertical spindle placed on one side of the machine. At the instant of leaving the
traversing rolls the blank sheet is seized in the manner shown by Fig. 2 by the closing
of the blades B, which then carries the sheet forward through an arc of a circle and in
doing so the part of the sheet in advance of the blades, marked A is turned back over
them, thus forming the first fold as at A' Fig. 3.
In this state the sheet is received by a set of grippers placed at the end of the stroke
of the blades. The blades then separate and return, leaving the partly folded
sheet held by the grippers at the fold, and suspended over the creasing or delivering
rolis.
A blade or knife then descends at the dotted line shown at Fig. 3 and by it the
sheet is driven between the creasing rolls, the grippers being at the same moment

page_text: opened to release the sheet, forming the second fold, which when pressed together by
its passage through the delivery rolls completes the bag. The pasted edge of the
sheet overlapping the fold first formed the bag is firmly cemented along the
seam.
CHIC
GEORGE ORLANDO WOOLLEY 7 Goodyere Street Gloucester Mechanical Engineer
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 :-
This invention relates to a machine for the manufacture of conical shaped, or cup
shaped paper bags, known in the trade as sweet bags, of the particular shape when
folded, described by the accompanying drawings. Sheet 1 Fig. 4 represents a finished
bag, this shape being considered an improvement on the ordinary triangular sweet
bag. Various sizes of bags can be made by this machine the width of the
paper & the length severed determining the size of the bag. The various operations
of pasting, cutting off into lengths, and folding, are accomplished in this machine
continuously and uninteruptedly from the reel whilst the paper is in motion. For
this purpose four pairs of rolls set parellel with each other and mounted in suitable
bearings are provided. The first pair I will term the feed rolls, the second the cutting
rolls, the third the traversing rolls, and the fourth the creasing or delivery rolls.
The paper on leaving the reel is made to pass underneath and in contact with a disc,
the perephery of which is supplied with paste from another disc which revolves in a
box containing paste or other sticking substance. By this device a line or streak of
paste of the width of the disc first mentioned is laid along the margin of the paper,
on the upper side thereof or that which will subsequently be the inner surface of the
bag. The paper thenpasses between the feed rolls and by them is drawn from the reel
and fed on to the cutting rolls, where it is cut into the proper bag lengths. The
cutting rolls sever one length at each revolution the length severed being determined
by their speed in relation to that of the feed rolls thus if their speed be equal to the
feed rolls the length severed will be equal to the circumference of the feed rolls.
If their speed be increased a shorter length will be severed, and if decreased a longer
length will result, the speed of the feed rolls remaining at a uniform rate at all times.
The severed portion is then received and passed on by the traversing rolls and on
emerging therefrom it passes between a pair of reciprocating folding blades, which at
one end are centred at a vertical spindle placed at one side of the machine. At the
instant of leaving the traversing rolls, the blank sheet Sheet 1 Fig. 1, is seized in
the manner shown at Sheet 1 Fig. 2 by the closing of the reciprocating blades,
represented by the dotted lines marked B, which then carry the sheet forward through
an arc of a circle of which the vertical spindle before mentioned is the centre. And
in doing so the part of the sheet in advance of the blades marked A Sheet 1 Fig. 2
is turned back over the top blade, thus forming the first fold as at Sheet 1 Fig. 3 A¹.
In this state the sheet is received by a set of grippers placed at the end of the stroke
of the blades. The blades then separate and return leaving the partly folded sheet
held by the grippers at the fold, and suspended over the creasing or delivery rolls.

page_text: A blade or knife then descends at the dotted line shown at Sheet 1 Fig. 3 and by it
the sheet is made to enter between the creasing rolls, the grippers being at the same
moment opened to release the sheet, thus forming the second fold which when
pressed together by its passage through the creasing rolls completes the bag. The
pasted nargin of the sheet overlapping the fold first formed the bag is firmly
cemented along the seam. The process just described is repeated for each bag
made.
And in order that my invention may be readily and properly understood I have
prepared the accompanying sheets of drawings, the same letters and figures of
reference being used in the different views of the same parts. Sheet 1 Fig. 5
represents a front elevation of the machine constructed in accordance with my
invention Fig. 1 represents a blank sheet of paper as severed, showing the line
of paste. Fig. 2 represents the position at which the blades represented by the
dotted lines marked B, seize the sheet. Fig. 3 shows the state in which the partially
folded sheet is delivered to the grippers and Fig. 4 represents a finished bag. Sheet 2
Fig. 6 represents a plan of the machine. Sheet 3 Fig. 7 represents a transverse
section on the line xy, those parts however which are clearly shown in the other
views, being omitted from this drawing for the sake of clearness. Fig. 8 represents
a section of the cutting rolls showing their position at the moment of severance of
the paper. Fig. 9 shows their position when the sliding pins 1 & 1 are approaching
the lugs 2 & 2 Figs. 10, 11, 12, 13 and 14 are diagrams showing how the folding
operations are performed.
Referring to Sheet 1 Fig. 5 D represents a reel of paper from which it is assumed
the bags are subsequently to be made. From the reel the paper is led underneath
the roller E and from thence to the feed rolls F & F. G is a box or trough of paste
in which revolves the disc H. I. is a smaller disc and so adjusted that it receives a
continnons supply of paste from the disc H, and convoys it to the margin of the
paper as the paper passes underneath the said disc I. The position of the line of
paste thus laid is shown at Sheet 1 Fig. 1 by the thick black line. The rolls F & Fi
draw the paper from the reel and pass it onward between the second pair or cutting
rolls J & J', and on to the traversing rolls K & K. The feed rolls & F¹ and the
traversing rolls K & K are all of the same diameter and are driven at a uniform and
constant rate of speed by the spur wheels represented by the circles 3',4', 5¹ & 6'
the function of the said rolls being to convey the paper passing between them at a
uniforin and regular speed at all times.
Referring to Sheet 3, Fig. 8 represents the cutting rolls, and they are so arranged
in suitable bearings that they are far enough apart to allow the paper to pass freely
between them. The upper roll J has the two sliding pins 1 & 11 fitted to two
corresponding holes provided, and to them are attached the serrated knife L. In the
lower roll J and opposite the serrated knife I. is a corresponding slot or groove and
by means of the spur wheels 13 & 131 the iwo cutting rolls revolve simultaneously
when actuated by the change wheel 6 Sheet 1 Fig. 5 through the inter-
mediates 7, 8, 9, & 10.
The pins 1&11 project beyond the roll and are shaped as shown, so that at
each revolution of the rolls their bevelled ends meet the lugs 2 & 2¹ fixed in
the bar M above, and by them the pins are pushed downward through the holes
carrying with them the serrated knife L thereby the paper is pierced and severed.
Two pockets are provided in the lower roll to allow the projecting ends of the pins to
clear when in that position. The spring N brings the serrated knife back to its
normal position after the pins 1 & 1 have passed the lugs 2 & 21. The cutting rolls and
the folding mechanism are both actuated by the change wheel 6 Sheet 1 Fig. 5, and
smaller or larger sizes of bags are made by substituting for it a change wheel of
greater or less number of teeth as required. The sheet being cut off it is passed on
by the traversing rolls K & K. I would here observe that instead of the severring
arrangement just described I may use any other suitable means to obtain the same
result, without prejudice to my patent: the essential part of my invention being the
process of forming the bag from the severed sheet of paper.

page_text: I will now describe in what manner the folling mechanism is actuated. Referring
to Sheet 1 Fig. 5, 0 is a cam fastened to the shaft P and by it a reciprocating motion
is imparted to the lever Q, through the medium of the lever R and connecting rod S,
the return stroke being effected by the spring T. The hollow vertical sleeve U bas
fastened to its lower end the lever Q and to its upper extremity the blade 11', and
to the hollow is fitted the spindle 1, to the upper end of which is fastened the boss V
and the blade 11. The pin W which is fitted tightly in a hole in the top of the
sleeve U and a working fit in the boss V serves to keep the top blade 11 in its
proper position above the lower blade 11, at the same time allowing a vertical
movement to the spindle U by the cam X, through the lever Y. Referring to
Sheet 2 Fig. 6, at 16, 17, & 18, is placed a set of grippers their office being to receive
and hold the partly folded sheet, at the end of the stroke of the blades. At 101, 171
& 181 is shown recesses or spaces in the top blade 11, and corresponding in
position to the position of the grippers. The top blade 11 is set forward beyond
the lower blade 11' a distance equal to the depth of the spaces aforesaid, the object
being to allow the grippers to close on the paper when they shut. Referring to
Sheet 1 Fig. 5, the lever Z carrying the knife or blade Z', receives its motion from
the cam a. through the sliding bar b and lever c. the return stroke being effected by
the spring d. From the traversing rolls the sheet which is represented at Sheet 3
Fig. 10 by the dotted line, is conducted by the plates 12 & 121 over the fixed
plate 13a and between the folding blades 11 & 111, and at the moment it is liberated
from the rolls K & K', the sheet is seized by the closing of the blade 11 upon the
blade 11 as shown at Sheet 3 Fig. 11, the blades being then at the end of their
stroke nearest the traversing rolls. At the same time the plate 12t is brought to
the position shown at Sheet 3 Fig. 11, by the lowering of the boss V upon the
knob e.
Sheet 1 Fig. 5. The object of this is to prevent the pasted margin of the paper
from coming in contact with the plate 13a in its passage under the plate. The
folding blades then pass underneath the plate 13a. The sheet. is thereby turned
back over the top blade. The blades 11 & 111 continue their passage forward to the
other extremity of their stroke, just before they arrive there however the lower blade
comes in contact with the lower gripper f. which then moves with the blade to
the end of the stroke thereof. Sheet 3 Fig. 12 shows the lower blade 11¹ just on the
point of meeting the gripper f. Fig. 13 shows the blades at their destination. The
upper grippers 16, 17 & 18 then are enabled to close and the partially folded sheet is
held by them while the blades 11 & 111 separate by the action of the cam X. The
blades then return, the top one lifting enough when at the position shown at Fig. 14
to enable the advancing sheet to pass freely under it. Fig. 14 shows the creasing
blade Z descending in order that the sheet may be made to enter the creasing
rolls g&g, which revolve in the directions indicated by the arrows, the screw h
Sheet 1 Fig. 5 at the same time opening the grippers. The sheet is thus liberated
and by its passage through the creasing rolls the pasted margin of the sheet is pressed
upon the margin of the fold first formed, thereby the seam is firmly cemented along its
entire length. The bag is then completed. The plate 12 returns to its normal
position by the action of the spring shown at t. Sheet 1 Fig. 5. The machine may
be set to make bags of various sizes, and when it is desired to alter it from one size
to another, a change wheel of suitable size must be substituted for the wheel 6. The
table i may now be moved along to its proper position on the frame ; and secured
there by any suitable means. The rod S connecting the two levers Q&R may now
be adjusted to the correct length, the cam O being then in the position as shown at
Sheet 1 Fig. 5, and the top of the sleeve U carrying the lower folding blade 11, is
back at the stop k. provided. A plate of suitable size is then substituted for the one
at 12. Sheet 1 Fig. 5. The wheel 10 which actuates the cutting rolls is provided
with a split boss and tightening screw l, so that it may be locked at any part of the
revolution about the spindle m of the cutting rolls. By means of this arrangement
the relative positions of the wheel 10 and the cutting roll J¹ may be so altered
and adjusted that the severed edge of the paper may be immediately between

page_text: the traversing rolls K & K, at the moment the sheet is seized by the folding
blades 11 & 11.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
1st. In a machine for the manufacture of conical shaped paper bags, the use of a
reciprocating instrument or a modification thereof for seizing the blank sheet of
paper, and forming the first fold during the passage of the reciprocating instrument
through an arc of a circle; substantially as herein described and illustrated.
2nd. The use of the gripper arrangement or a modification thereof either
independently or in combination with, the reciprocating instrument, substantially as
herein described and illustrated.