Improvements in Apparatus for Making Paper Bags.
Year: 1891

page_text: Date of Application, 16th Dec., 1891
Complete Specification Left, 10th Sept., 1892-Accepted, 16th Dec., 1892
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Making Paper Bags.
A communication from QUENARD FRERES ET FILS, of 95, Boulevard Beaumarchais,
Paris, in the Republic of France.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E., do hereby declare the nature of this invention to be as follows:-
This invention relates to a machine for the automatic manufacture of paper bags.
The machine consists of two main frames or supports connected at their lower
parts by ties or braces and at the upper pari by the table and the various brackets
for supporting the operating devices. The table is rectangular in shape and
recessed and it is secured to the frames by means of lugs and bolts.
In the back end of the table which projects beyond the frames, are provided two
slots through which pass endless pitch or feed chains. These chains are adapted to
be moved longitudinally and are gui led by the sides of the table. Two rollers are
mounted on two shafts carried in suitable supports fixed by bolts to the rear of the
table. The two pitch-wheels whereby the feed-chains are moved along, are rigidly
secured upon cross-shafts whose bearings are situated in the lower part of the frames.
This shaft receives its reciprocating circular motion from the driving shaft
through the medium of a cam secured on its shaft, a jointed lever, a link, a pawl, a
ratchet-wheel having four teeth only, and two gear-wheels, the diameters of which
bear to each other the proportion of 1 to 2.
The relative position of these intermediate parts is such, and they are so timed,
that while the shaft upon which the before mentioned cam is secured and which for
convenience is herein designated the cam shaft 5 completes one revolution, the
pitch-wheels only perform one half of a turn.
The cam shaft 5 receives its motion from the main driving shaft through suitable
gearing.
The driving shaft is provided at its ends with fast and loose pulleys and a fly-
wheel for controlling the operation of the machine.
During the horizontal forward motion of the feed chains the paper is carried
through the machine and a paper-bag made, this motion being invariably uniform.
The position of cach sheet of paper is adjusted by means of small squares arms or
brackets secured to one of the pitch-chains (say that of the right side) and by a
movable stop or tappet adapted to travel intermittently in a straight line.
This tappet or stop at its upper portion carries a guiding stud which at a given
moment projects beyond the table and affor.is a support for the paper. The tappet
is guided within a socket integral with the table and a spring holds it constantly in
contact with a cam hereinafter for convenience referred to as the cam 14 which is
firmly secured on its shaft and receives motion from the before mentioned cam-
shaft 5 by means of suitable gearing.
The cam 14 raises the tappet whenever a fresh bag is to be formed and releases
it immediately afterwards to enable the paper to be carried on by the feed-chain
when this is set in motion.
The paper
intended to form a bag is connected to the left chain by means of
pins or points provided in plates secured to that chain, and is in this manner drawn
underneath the mandrel.
The feeding of the paper under the mandrel may also be ensured in the following
Upon the tandet actuated by the cam 14 is rigidly secured a stop with
manner

page_text: which is arranged to engage a finger integral with or rigidly secured to a horizontal
shaft which is guided within two brackets or bearings. A counterweight sliding
upon the said shaft retains the finger against the stop.
A square or bell-crank lever fixed to the end of the shaft through the medium of
a lever and link conveys a semi-circular movement to a rod which as it so moves
opens and closes the nippers or tongs arranged to grasp the paper.
Upon the movable plate of the mandrel is secured a fork shaped spring which
is to retain the sheet of paper, while the nippers are in motion to fetch the next
sheet at the end of the table. Two pairs of such nippers are secured to a rod
which is reciprocated by the action of a slide or carriage operated by links and
levers which receive motion from a cam and the said rod is connected to the said
slide or carriage which imparts motion to two rods located within the mandrel.
The nippers somewhat resembling ordinary scissors in shape are retained in their
open position by springs as they recede the rod between the arms in performing its
semi-circular motion moves said arms apart thereby bringing the actual operating
jaws close together which are to grasp the paper and to carry it under the mandrel.
A horizontal square support or bracket arranged on a level with the table receives
from a cam a vertical up and down motion, the curve of the cam being so calculated
as to cause the plate to descend at the precise moment when the first sheet of paper
is carried under the forked spring and a free passage is afforded to one pair of
nippers while at the same time the sheet of paper grasped by the other pair of
nippers is being carried under the mandrel.
The mandrel is the main feature of our invention and consists of a plate fixed by
bolts or the like to a support and of another movable plate. These two plates are
connected by jointed walls or sides adapted to move further apart or closer together
as required under the action of two links one end of each of which is secured to the
said side pieces, while the other is attached to a bracket screwed on to a central
rod. The bottom piece of the mandrel consists of two jointed or hinged parts which
are folded or spread out by the action of the said central rod and of other small
links. The central rod is guided by two sockets through which it passes and which
are integral with a stationary plate. Motion is imparted to it by a cam secured to
the before mentioned cam shaft 5, through the medium of a pivotted lever, a rod
and a bell-crank lever. This bottom piece is arranged as described to enable the
movable face of the mandrel, when required to approach or recede from the
stationary surface.
The paper being tightly grasped between the table and the inner surface of the
movable plate of the mandrel, the folds on the left are formed by means of a
folding device pivotted to two adjustable standards. When turned down this
folding device is horizontal and level with the table. When raised, it is vertical
having completed a quarter of a revolution and thereby formed the left folds of the
bag by pressing the paper against the corresponding wall of the mandrel.
The upper fold is formed by a flange arranged at the end of the folding device.
Motion is imparted to the folder by a cam firmly secured on the before mentioned
shaft 5 and through suitable levers a cross-piece belonging to the frame, and a link.
The motion of the next folding device is effected in the same way as that of the
last described folding device the arrangement of the parts being similar.
The double fold instead of being formed by the flange of the folder as in the first
folder is made by means of an inclined india-rubber roller whose operation will be
presently described. This roller is also adapted to ensure the necessary adhesion
between the two upper folds of the paper-bag, one of which folds receives
beforehand a layer of paste or adhesive material from a device of any suitable
construction.
The flexible roller adjustable as to height and direction, is fixed to a bush or
socket sliding upon an inclined way. The frictional action of the roller on the
paper is obtained by means of links and levers which receive motion from a cam
rigidly secured to the before mentioned cam shaft 5.

page_text: The folding of the paper to be formed into a bag is performed in four successive
operations, viz.
(1) the lower fold, (2) the upper fold, (3) the right fold, and (4) the left fold.
The lower fold is effected by means of a frame upon which is mounted a plate
equal in width to the bottom plate of the mandrel. This plate by a circular
movement brings its back portion nearer to the paper projecting at the bottom of
the mandrel. The frame is so pivotted in bearings as to freely turn along with the
support or brackets. Motion is imparted to it by means of a crank arranged on
the outside of the bracket, a link and a lever operated by a cam secured on to the
before mentioned cam shaft 5.
The upper fold is performed exactly in the same manner, the operative parts
employed for this purpose being arranged in the left frame of the machine, and
being in all respects similar to those of the mechanism which forms the lower fold.
One side fold is formed by turning down upon the bottom of the mandrel a
square plate secured to a vertical shaft which freely turns in bearings integral with
the bracket. Upon this shaft is mounted a wormwheel which receives motion from
another worm-wheel or worm fixed upon a horizontal shaft, on the end of which is
tightly fitted a crank connected by a link with a lever moved by a cam on the
before mentioned cam shaft 5.
The other side-fold is effected exactly in the same way by the second square
plate.
After the paper has been folded upon the mandrel a plate in order to facilitate
the flattening of the bottom of the bag, follows the movement of the jointed bottom
piece of the mandrel. The plate is secured to the end of a lever mounted upon a
shaft and describes an arc of a circle sufficiently large to enable the bag to be
disengaged from the mandrel. The said plate performs an intermittent recipro-
cating circular motion and the shaft upon which it is mounted freely turns in its
bearings. Upon this shaft also is firmly secured a crank which receives motion
from a cam secured on the cam shaft 5 through the medium of a lever, links and a
Hange.
When the bag is thus flattened by the closing movement of the mandrel, two
rods arranged within the latter push the bag between two flattening devices and
cause the bottom piece to bear against a horizontal plate mounted upon a frame.
This frame works in combination with the lower flattener and the object of its
operation is to reverse the lower bottom fold, which is effected by means of a frame
upon which the said horizontal plate is fixed and which receives an intermittent
circular reciprocating motion from a heart-shaped cam which operates a pivotted
lever connected by a link to a toothed sector which gears with a pinion mounted
on the end of the last mentioned frame.
The rectilinear intermittent reciprocating motion of the rods within the mandrel
is caused by the links and levers which receive motion from a cam mounted on the
same shaft as the before mentioned heart-shaped cam and which shaft for
convenience is herein referred to as the cam shaft 100.
When the bag has reached the flattening devices these draw closer together,
though still leaving a sufficient space between them to avoid breaking the paper.
This movement of the flatteners is produced by two cams actuating the flattening
plates in opposite directions. These plates are mounted upon the ends of rols and
are guided by sockets, spiral springs holding the lower ends of the rols in contact
with the cams which are mounted upon the cam shaft 100 which receives motion
from the before mentioned cam shaft 5 through the medium of an eccentric or
equivalent mounted upon the said shaft and of parallel motion gear.
The flattening devices baving moved apart the bag is extended owing to its
being flattened, so that it is seized by two fingers between which it had previon-ly
passed. These fingers connected with a cam by a lever in moving forward push
the bag between the feed aprons of the finishing apparatus.
In order to render the distance between these aprons adjustable, they are passed
over two rollers connected to supports by hinged levers which are retained at their

page_text: ends, in a given position, by slides. A stretching roller is provided over which one
of the aprons also passes. These feed-aprons are drawn along by means of pulleys
mounted upon the spindles of the rollers and operated by means of a belt strap or
equivalent or two pulleys mounted upon the driving shaft.
Upon leaving the finishing apparatus the bag falls into a drum divided into
compartments and arranged to move intermittently in a circular path, such circular
motion taking place whenever one of the compartments has received 25 bags.
This drum is formed of two circular plates or discs made of wood or metal and
connected to a central nave, the annular space thus formed being divided by
partitions into preferably eight compartments.
The nave of the drum is traversed by a shaft freely turning in bearings.
Upon the end of this shaft is secured a ratchet-wheel having preferably eight
teeth with which engages a pawl fixed to a lever pivotted to the drumm-shaft. This
lever receives motion from the cam shaft 100 through the medium of a pinion
secured to this shaft and having preferably 20 teeth. This pinion gears with a
wheel having preferably 100 teeth upon the shaft of which is securely fixed a
pinion also having say 20 teeth, which gears with another wheel with say 100 teeth,
this latter wheel completing one revolution during the time that the cam shaft 100
turns round say 25 times.
Whenever it does so it operates a lever which acts upon a tappet located within
a plate secured to the cam shaft 100. The tappet is thus caused to meet a lever
and to swing it round so that it causes the drum to move say th of a revolution
under the action of a link a lever and the ratchet-wheel secured on drum shaft.
Dated this 16th day of December 1891.
W. P. THOMPSON & BOULT,
Agents for the Applicant.
A communication from QUENARD FRÈRES ET FILS, of 95, Boulevard Beaumarchais,
Paris, in the Republic of France.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Member of the Institution of Mechanical 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:-
This invention relates to a machine for the automatic manufacture of paper bags
and will be best understood by reference to the accompanying drawings in which
Fig. 1 is a side elevation of the machine showing the operating mechanism
arranged upon the left frame or support.
Fig. 2 is a similar elevation of the operating parts arranged on the right frame
or support.
Fig. 3 is a plan of the complete machine.
Fig. 4 is an elevation of the front end of the machine.
Fig. 5 is a cross section on line P Q Fig. 1.
Fig. 6 shows the device for driving the movable paper carrier whereby the
position of the sheet of paper to be formed into a bag is adjusted.
Figs. 7 7 7B 70 and 7D are various views of the mandrel.
Fig. 8 is a diagram illustrating the arrangement of the paper-feed by means of
endless pitch-chains.
Fig. 9 represents the various devices for operating the finisher and receiver.
Fig. 10 is an end view of a modified arrangement of the feed.
Fig. 11 is a plan thereof.

page_text: Fig. 13 shows in elevation and in plan the details of the nippers by which the
paper is carried along.
Fig. 14 is a detail view of the mechanism for effecting the lower fold.
Fig. 15 is a detail view of the mechanism for flattening the bottom of the bag.
Fig. 16 is a side view showing the rods 86 and the mechanism for operating
them.
Figs. 17 and 18 are views showing the folds of the bottom before and after
flattening.
The machine consists of two main frames or supports A A' connected at their
lower parts by ties or braces B and at the upper part by the table C and the
various brackets D E F G II for supporting the operating devices. The table C
is rectangular in shape and recessed and it is secured to the frame A A' by means
of lugs or feet band bolts (Figures 1 and 3).
12
In the back end of the table which projects beyond the frames are provided two
slots m through which pass endless pitch or feed chains (Figures 3 and 5). These
chains are adapted to be moved longitudinally and are guided by the sides of the
table. Two rollers M are mounted on two shafts N carried in suitable supports O
fixed by bolts to the rear of the table (Figure 1). The two pitch wheels R whereby
the feed chains are moved along are rigidly secured upon cross shafts S Figure 1,
whose bearings T are provided at the inner side of the frames A A'.
This shaft receives its reciprocating circular motion from the driving shaft
through the medium of a cam 3 secured on its shaft 3 a lever 4 a link 6 a pawl a
ratchet wheel 7 having four teeth only and two gear wheels 8 and 9 the diameters
of which bear to each other the proportion of 1 to 2 (Figures 1 and 8).
The relative position of these intermediate parts is such and they are so timed
that while the shaft 5 upon which the cam 3 is secured completes one revolution
the pitch wheels only perform one half of a turn.
The cam shaft 5 receives its motion from the main driving shaft 1 Figure 3
through the medium of a toothed wheel 17 gearing with a pinion 18.
The driving shaft 1 is provided at its ends with fast and loose pulleys 23 24 and
a fly wheel 25 for controlling the operation of the machine (Figures 13 and 4).
During the horizontal forward motion of the feed chains the paper is carried
through the machine and a paper bag made. This motion being invariably uniform.
The position of each sheet of paper is adjusted by means of small arms or brackets 10
secured to one of the pitch chains (say that of the right side) and by a movable
stop or tappet 11 adapted to travel intermittently in a straight line (Figure 5).
This tappet or stop 11 at its upper portion carries a guiding stud which at a
given moment projects above the table and affords a support for the paper. The
tappet 11 is guided within a socket 12 Figures 5 and 6 integral with the table and
a spring 13 holds it constantly in contact with a cam 14 which is firmly secured on
the same shaft 15 as the gear wheel 16 and receives motion from the cam shaft 5
by means of the gear wheel 19 and the idler 20. This idler freely turns upon a
shaft 21 secured to a support or bracket 22 fixed by bolts to the frame A'.
The cam 14 Figure raises the tappet 11 whenever a fresh bag is to be formed
and releases it immediately afterwards to enable the paper to be carried on by the
feed chain when this is set in motion.
The paper intended to form a bag is drawn along by the left chain by means of
pins or points provided in plates 26 secured to that chain and is in this manner
brought underneath the mandrel (Figures 1 and 5).
The feeding of the paper to the mandrel may also be ensured in the following
manner and by the apparatus shown in Figures 10 11 and 12. Upon the tappet 11
actuated by the cam 14 is rigidly secured an arm a with which is arranged to
engage a finger integral with or rigidly secured to a horizontal shaft which is
supported by two brackets or bearings dd. A counterweight o adjustable upon
the said shaft c retains the finger against the arm a.
A lever arm e fixed to the end of the shaft
C
through the medium of a link ƒ and

page_text: lever arm imparts partly circular movement to a rod h which as it so moves opens
and closes the nippers or tongs arranged to grasp the paper.
Upon the movable plate p of the mandrel Figure 7 is secured a fork shaped
spring which is to retain the sheet of paper, while the nippers are in motion to
convey the next sheet at the end of the table. Two pairs of such nippers kk' are
secured to a rod which is reciprocated by the action of a slide or carriage operated
by links 87 the pivotted lever 88 a link 89 and a lever 90 which receives motion
from cam 91 secured on the shaft 100 Figure 2. The rod is connected to the
said slide or carriage which imparts motion to two rods 86 located within the
mandrel (Figure 7).
The
The rods 86 (of which Figure 16 is a side view) are actuated by the parts which
operate the grippers k k¹ so as to shift them forwards to the desired extent.
forward motion of these grippers is obtained, by means of a carriage operated
by the link 87, pivotted lever 88, link 89 and lever 90. These rods 86 are operated
by the same rod 1, so that, at the same time as the rods move a bag from the
mandrel, the grippers pick up a fresh sheet of paper, carry it under the mandrel,
and release it there in the desired position.
The nippers k k somewhat resembling ordinary scissors in shape are retained in
their open position by springs m as they recede the rod in performing its partly
circular motion moves said arms n apart thereby bringing the actual operating jaws
close together which are to grasp the paper and to carry it under the mandrel.
A horizontal square support or bracket 7 arranged on a level with the table
receives from a cam a vertical up and down motion, the curve of the cam being
so calculated as to cause the plate to descend at the precise moment when the first
sheet of paper is carried under the forked spring j and a free passage is afforded to
the nippers while at the same time the sheet of paper grasped by the nippers ¹
is being carried under the mandrel.
The mandrel (Figure 7) consists of a plate u fixed by bolts or the like to a
support D (Figures 1 and 3) and of another movable plate t These two plates
are connected by jointed walls or sides 27 and 28 (Figure 7) adapted to move
further apart or closer together as required under the action of two links 29 and 30
(Figure 7) one end of each of which is secured to the said side pieces, while the
other is attached to a bracket 31 screwed on to a central rod 32. The bottom
piece of the mandrel consists of two jointed or hinged parts which are folded or
spread out by the action of the said central rod 32 and of other small links 33
and 34. The central rod 32 is guided by two sockets or bearings 35 and 36
through which it passes and which are integral with a stationary plate u. Motion
is imparted to it by a cam secured to the cam shaft 5, through the medium of a
pivotted lever 37, a rod 38, and a bell-crank lever 39 (Figure 1). This bottom
piece is arranged as described to enable the movable face of the mandrel, when
required to approach or recede from the stationary surface.
L
The paper being tightly grasped between the table and the inner surface of the
movable plate t of the mandrel, the folds on the left are formed by means of a
folding device 40 pivotted (as shown in Figures 7 and 4) to two adjustable
standards 41. When turned down this folding device 40 is horizontal and level
with the table C. When raised, it is vertical having completed a quarter of a
revolution and thereby formed the left folds of the bag by pressing the paper
against the corresponding wall of the mandrel. The upper fold is formed by a
flange 42 arranged at the end of the folding device 40 (Figures 4 and 7"). Motion
is imparted to the folder by a cam 43 firmly secured on the shaft 5, lever 44 and
lever arm 45 pivotted at 46 to a cross-piece 47 of the frame, and link 48 which
connects the lever 45 to the folder 40 (Figures 5 and 7*).
The motion of the next folding device 401 (Figures 4 and 7°) is effected in the
same way as that of the folding device 40 the arrangement of the parts being
similar.
The double fold instead of being formed by the flange of the folder 40' is made
by means of an inclined india-rubber roller whose operation will be presently

page_text: cribed. This roller is also adapted to ensure the necessary adhesion between
two upper folds of the paper-bag, one of which folds receives beforehand a
er of paste or adhesive material from a device of any suitable construction.
The flexible roller 49 adjustable as to height and direction is fixed to a bush or
ket 50 sliding upon an inclined way 51. The frictional action of the roller on
paper is obtained by means of link 52, lever 33 pivotted at 54 Figure 1, link 55
the lever 56 pivotted at 57 which latter lever receives its motion from a cam 58
dly secured to the cam shaft 5.
The folding of the paper to be formed into a bag is performed in four successive
The lower fold is effected by means of a frame 59 upon which is mounted a
plate 60 equal in width to the bottom plate of the mandrel Figures 4 & 14. This
plate, by a circular movement, brings its back portion nearer to the paper projecting
at the bottom of the mandrel. The frame 59 is so pivotted in bearings 61 as to
freely turn along with the support or bracket E (Figures 1, 4 and 14). Motion is
imparted to it by means of a crank 62 arranged on the outside of the bracket E
link 63 and a lever 64 operated by a cam 66 secured on to the cain shaft 5.
The upper fold is performed in the same manner, the operative parts employed
for this purpose being arranged in the left frame of the machine, and being in all
respects similar to those of the mechanism which forms the lower fold.
One side fold is formed by turning down upon the bottom of the mandrel a
square plate 67 (Figure 4) secured to a vertical shaft 68 (Figure 1) which freely
turns in bearings integral with the bracket E. Upon this shaft is mounted a
worm 69 which receives motion from a worm or skew-gear wheel 70 fixed upon a
horizontal shaft 71 and also freely turning within bearings secured to the frame or
bracket E.
On the end of the shaft 71 is tightly fitted a crank 72 connected with a lever 74 by
a link 73 (Figures 1 and 4). The lever 74 is moved by the cam 75 on the cam
shaft 5 (Figure 1).
The other side-fold is effected exactly in the same way by the second square
plate 67.
The bottom of the bag is pasted when the lower fold is folded up against the
upper fold. For this purpose the sheet of paper, of which the bag is to be formed,
is provided before its insertion into the machine with a certain amount of paste
along two of its adjacent edges, which may be done either by hand or by means of
any suitable brush or the like. The paste along ab serves to join the edges of the
body of the bag as shown in Figure 17, while the paste along the adjacent edge
serves to close the bottom and to retain the folds formed in their position. No
special device for applying the paste is claimed, as the paste may be spread in any
suitable manner before the sheet of paper is sent through the machine.
After the paper has been folded upon the mandrel a plate 77 (Figure 15) in
order to facilitate the flattening of the bottom of the bag, follows the movement
of the jointed bottom piece of the mandrel. This plate is arranged at the extremity
of a bent arm 77. The bag being placed around the mandrel, as indicated in
dotted lines, it will readily be seen how the rotary motion of the plate 77 is brought
about. The cam 81 mounted upon the shaft 5 lowers the lever 82 and consequently
causes the lever 82¹ to rise and through the medium of the rod 78, the shalt 79
receives rotary motion, while the plate 77 describes an arc of a circle about the
shaft 79 and in so doing flattens the bottom of the bag against the mandrel. The
arrow indicates the direction of motion of the plate 77.
Upon this shaft 79 is also firmly secured a crank which receives motion from a
cam 81 secured on the cam shaft 5 through the medium of a lever 82, link 83,
lever 84 and another link 85.

page_text: When the bag is thus flattened by the closing movement of the mandrel, two
rods 86 (Figures 10 and 11) arranged within the latter push the bag between two
flattening devices and cause the bottom piece to bear against a horizontal plate
mounted upon a frame 103 (Figure 3). This frame works in combination with the
lower flattener and the object of its operation is to reverse the lower bottom
fold, which is effected by means of a frame 103 Figure 3 upon which the said
horizontal plate is fixed and which receives an intermittent circular reciprocating
motion from a heart-shaped cam 104 (Figure 1) secured to the shaft 100. This
cam operates a lever 105 connected by a link 106 to a toothed sector 107 which
gears with a pinion 108 mounted on the end of the frame 103.
The rectilinear intermittent reciprocating motion of the rods 86 is caused by
the links 87 the lever 88 a link 89 and a lever 90 which receives motion from the
cam 91 on shaft 100 (Figures 10 and 11 and 16).
When the bag has reached the flattening devices 92 and 93 (Figure 1) these
draw closer together, though still leaving a sufficient space between them to avoid
breaking the paper. This movement of the flatteners is produced by two cams 94
and 95 (Figure 4) actuating the flattening plates in opposite directions. These
plates are mounted upon the ends of rods 96 and 97 and are guided by sockets or
bearings, spiral springs 98 and 99 (Figure 2) hold the lower ends of the rods 96
and 97 in contact with the cams 94 and 95 which are mounted upon the cam
shaft 100 which receives motion from the cam shaft 5 through the medium of an
eccentric or equivalent 101 mounted upon the said shaft and of parallel motion
gear 102.
The flattening devices having moved apart, the bag is extended laterally owing
to its being flattened, so that it is seized by two fingers 109 between which it had
previously passed. These fingers 109 connected with a cam 110 by a lever 111
in moving forward push the bag between the feed aprons 112 and 113 of the
finishing apparatus.
From Figure 1 it will be seen that in order to render the distance between these
aprous 112 and 113 adjustable, they are passed over two rollers 114 and 115
connected to supports H by hinged levers 117 and 118 which are retained at their
ends, in a given position by the slides 119 and 120. The roller 116 is a stretching
roller over which the apron 112 also passes. These feed-aprons are drawn along
by means of pulleys 121 and 122 mounted upon the spindles of the rollers and
operated by means of a belt strap or equivalent or two pulleys 123 mounted upon
the driving shaft 1.
Upon leaving the finishing apparatus the bag falls into a drum 124 Figures 1
and 9 divided into compartments and arranged to move intermittently in a circular
path, such circular motion taking place whenever one of the compartments has
received 25 bags.
This drum is formed of two circular plates or discs made of wood or metal and
connected to a central nave, the annular space thus formed being divided by
partitions 125 into preferably eight compartments. The nave of the drum is
traversed by a shaft 126 freely turning in bearings carried by suitable brackets.
Upon the end of shaft 126 is secured a ratchet-wheel 127 having preferably
eight teeth with which engages a pawl 128 fixed to a lever 129 pivotted to the
drum-shaft. This lever receives motion from the cam shaft 100 through the
medium of a pinion 130 secured to this shaft and having preferably 20 teeth.
This pinion gears with a wheel 131 having preferably 100 teeth upon the shaft
of which is securely fixed a pinion 132 also having say 20 teeth, which gears
with another wheel 133 with say 100 teeth; this latter wheel completing one
revolution during the time that the cam shaft 10" turns round say 25 times.
Whenever it does so it operates a lever 134 which acts upon a tappet 133
located within a plate 136 secured to the cam shaft 100. The tappet is thus
caused to meet the lever 137 and swing it round so that it causes the drum 124
to move say th of a revolution under the action of a link 138 operating the
lever 129, and the ratchet-wheel 127.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondents, and in what manner
the same is to be performed, I declare that what I claim is :-
1. In a machine for making paper bags the arrangement of the mandrel having
the shape of a rectangular parallelopiped the sides and bottom of which are formed
of several jointed or hinged parts which act by means of the before described
operating mechanism the purpose of this arrangement being to form the bag by
folding the paper on the sides and on the end substantially as described and
illustrated in the accompanying drawings.
2. In a machine for making paper bags the mechanical arrangements serving
to fold the bag on the sides and at the bottom and the mechanism for seizing the
bag when it leaves the mandrel and leading it after pasting into a receptacle
substantially as described and illustrated in the accompanying drawings.
3. The combination and arrangement of parts constituting the complete machine
for making paper bags substantially as described and illustrated in the accompanying
drawings.
Dated this 10th day of September 1809
W. P. THOMPSON & BOULT,
Agents for the Applicant.