A NEW AND USEFUL PAPER BAG MACHINE
Year: 1887

page_text: Date of Application, 26th Apr, 1887!
Specification Accepted, 27th May, 1887
WC, WILLIAM A. LORENZ and WILLIAM H. HONISS, both of Hartford, Connecticut,
one of the United States of America, and both inventors and mechanical engineers,
do hereby declare the nature of our invention, for A NEW AND USEFUL PAPER BAG
MACHINE, and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
This machine automatically manufactures continuous tucked paper tubing into
square bottom paper bags, at a high rate of speed.
Figures 1, 2 and 3 of the accompanying fourteen sheets of drawings show plan,
side and end views respectively, of a portion of a tucked paper tube, manufactured
by this machine from continuous tucked paper tubing, and called by us a blank.
Figure 4 is a side view of this blank pressed together near its center.
Figures 5 and 6 are side and plan views of the blank, showing one end opened
up into a box-like form.
Figures 7 and 8 are side and plan views of the blank, showing the box-like form
partly folded down into a shape which we term the diamond.
Figures 9 and 10 show side and plan views of the same fully folded down, and lines
of paste applied to the diamond.
Figure 11 is a side view of the blank, the diamond being shaped to a curve, and
the rear flap being partly folded over.
Figure 12 is a plan of the blank, showing the second flap fully folded over on the
diamond.
Figure 13 is a plan view, showing the first flap folded over upon the second flap
thus completing the bag.
Figure 14 is a perspective view of the bag fully opened up.
Figure 15 is a side view of that portion of the machine which draws forward the
tucked paper tubing, and folds the blanks as far as the shape shown in figure 6.
Figure 16 is a plan thereof.
Figure 17 is a section on the line ab of Figure 15 looking to the left.
Figure 18 is a section of a portion of Figure 16, and is taken on the longitudinal
centre c d of the machine.
Figure 19 is an end view of the right hand part of Figures 15 and 16.

page_text: Figure 20 shows portions of Figure 19, but in another position.
Figures 21 and 22 show plan views of the upper parts of Figures 19 and 20,
together with the blank at two different stages in the folding.
Figure 23 is a section of Figure 15, on the line e f.
Figure 24 is a plan view of that portion of the machine which folds the bag blank
from Figure 6 to completion.
Figure 25 is a section on the line m n of Figure 24.
Figure 26 is a section of Figure 25, on the line g h.
Figure 27 is an end view of a portion of Figure 25, looking to the left on the
line i j.
Figure 28 is an enlarged section of Figure 25, on the line kl, showing a portion
of the machine and the folded blank.
Figure 29 shows the same parts as in Figure 28, but in a more advanced
position.
Figures 30 and 31 are side views of a portion of Figure 25, showing the operation
of flap folding.
Figures 32 and 33 represent a modification of the blank folding portion of Figures 15
and 19, and are side and end views respectively.
Figure 34 is another modification of the same.
Figures 35 and 36 represent a modification of the flap folding devices.
Figure 37 represents a side view of another modification of the same, upon a
reciprocating carriage.
Figures 38 and 39 represent side views in two positions, of another modification of
the same.
Figures 40 and 41 represent side and plan views of another modification of the
same.
Figures 42 and 43 represent side views, in two positions, of another modification of
the same.
Figures 44, 45 and 46 represent side views in two positions and an end view, of
another modification of the same.
Figure 47 is an enlarged view of a portion of Figure 14.
Figures 48 and 49 are front and sectional plan views, respectively, of a modification
of the sweeper apparatus, the latter being taken on the line st of Figure 48.
For clearness, the following gears are not shown in full in side view, but have parts
broken away, or teeth omitted, namely:-21, 22, 25, 26, 28, 29, 32, 33, 67, 85, 86, 87,
88, 91, 93, 95, 181, 185, 186, 187, 193, 196, 222, 223, 247, 325, 326, 328, 332, 339,
340, 418, and 433.
The numeral 1 indicates a bag blank severed from a continuous tucked paper tube,
and having two inwardly projecting tucks, 2 and 3, and two longitudinal slits, 4 and 5,
a lip, 6, and a recess portion, 7; the tucks extending the entire length of the blank,
and the slits extending only a short distance into one end thereof, as shown in
Figures 1 to 3. The form which we call the box is that shown in Figures 5 and 6,
and is marked with the numeral 8. The form which we call the diamond is that shown
in Figures 7 to 10, and is marked with the numeral 9. The ends of the diamond are
called flaps by us, that marked with the numeral 10, being called the first flap, and
that marked with the numeral 11, the second flap. The numeral 12 indicates the
place where one side of the diamond laps over the other side, in order to prevent
paste from entering the bag, and to make the bag smooth on the inside of its bottom.
Lines of paste, 13, are placed on both sides of the lap, 12, as shown in Figure 10.
The second flap, 11, is folded over on the middle rectangular portion of the diamond
in Figure 12, and the first flap, 10, is folded over upon the second flap, as shown in
Figure 13, and the bag is thus completed.
In this machine, tucked paper tubing is drawn from another machine adapted to
make such tubing, or from any other source, and is delivered to and gripped upon a
travelling folding bed, and is separated into blanks at each stroke of this bed. This
bed, as we construct it, is a rocking one, and is provided with suitable folding apparatus
for making the primary bottom folds upon the bag.

page_text: From this folding bed, the partly folded bag is delivered by suitable mechanism to
gripping rolls, which pass it to a second travelling folding bed, upon which the pasting
and flap folding are accomplished. This second bed is an endless one, as we prefer to
construct it, and is provided with clamping and folding apparatus as herein set forth.
The combinations of mechanism with these folding beds, form the most important
parts of our present improvements, and they may be greatly modified in form and
arrangement, and very much in their details without departing from our invention.
In the principal figures the first travelling folding bed is represented as supported
upon a central cam-carrying pivot as shown in Figure 15. The second travelling bed
is shown as supported upon a central shaft with which it revolves, as shown in
Figure 25, and this bed is represented as carrying two pairs of retracting fingers,
arranged to act in succession from the inside to the outside of the endless folding
bed. Beyond this bed, are shown flap folding blades and rolls for flattening the
folded bag.
We first describe that section of this paper bag machine, which draws the tucked
paper tubing from the former of the machine which manufactures that tubing and
delivers it to the travelling folding bed, together with the mechanism for severing the
tubes into bag blanks.
In Figures 15, 16 and 17, sheets 2 to 4, the numeral 15 represents the driving
pulley by which power is communicated to this machine, and 16 is a loose pulley
adjacent thereto. The pulley 15 is fastened to a shaft 17 which has bearings in two
uprights 18 and 19, these latter being fixed to the bed 20. A driving gear 21 is
fixed to the shaft 17, and meshes into a gear 22 upon the shaft 23 upon which a
hand wheel 24 is fixed. Upon the shaft. 23 is fixed a gear, 25, meshing into an
intermediate gear, 26, turning upon a stud, 27. This gear 26 meshes into two gears
28 and 29 which turn upon shafts 30 and 31 respectively. The gears 28 and 29
mesh into gears 32 and 33 respectively, which turn upon shafts 34 and 35. To the
gears 28 and 32 are secured the drawing rolls 36 and 37, respectively, which also
run upon the shafts 30 and 34, respectively. These rolls are narrower than the tucked
tube and are also reduced in diameter in the middle, forming two annular projections
which press upon the tube between its edges and the bottoms of the inwardly pro-
jecting tucks, permitting these to preserve their roundness and elasticity. Pressure is
exerted upon the upper drawing roll, 37, through the can handles, 42 and 43, by
means of springs, 44, in the caps, 46 and 47, attached to the uprights, 18 and 19.
The cam handles, 42 and 43, extend into the caps, 46 and 47, and into the uprights,
18 and 19 and press upon arms, 48 and 49, in which is supported the shaft, 34,
and which are arins pivoted at 50 to the uprights, 18 and 19. The cam handles, 42
and 45, may be swung away from over the arms, 48 and 49, permitting the roll, 37,
to be swung back into the dotted position, 52, so that the tube 57, may be threaded
or drawn over the knife, 58, with ease. Pressing rolls, 53 and 54, are attached to the
gears 29 and 33, and revolve upon the shafts, 31 and 35, respectively. Pressure is
exerted upon the upper shaft by means of springs, 55, in the caps, 46 and 47.
To the left of the drawing rolls, 36 and 37, is shown a portion of the former, 56,
with the tucked paper tube, 57, upon it. The former, 56, has projecting from the
forward end thereof, within the tucked paper tubing, 57, a former knife, 58, which
extends centrally between the rolls, 36 and 37, and 53 and 54. This knife is
T-shaped, being of the width of the tube between the pressing rolls, and being
narrower where it passes between the rolls 36 and 37. A hole, 59, is made in said
knife, 58, to allow the rolls, 53 and 54, to press the tube. The knife, 58, extends
beyond the rolls, 53 and 54, and its front edge is suitably serrated, as shown in
Figure 17. Above the former knife, 58, and the tube which envelopes the same,
the lip knife, 60, is fastened to the uprights, 16 and 19, and its serrated front edge is
preferably curved at the sides, and should be placed somewhat to the rear of the front
edge of the former knife, 58. In front of the two knives, 58 and 60, is shown a
striker, 61, which is revolved by means of a shaft, 62, running in a bracket, 63, fixed
to the upright, 19. The shaft, 62, is driven by means of a bevel gear, 6-1, fixed thereto,
which gear meshes into a bevel gear, 65, upon the shaft, CG. This shaft is driven by

page_text: a gear, 67, meshing into the driving gear, 21. Upon the shaft, 66, is secured an
arm, 70, carrying two slitting knives, 71 and 72. The former, 56, is provided with
two slots, 73 and 74, to allow the slitting knives to pass into it.
The mechanism for imparting an oscillating motion to the travelling folding bed
will now be described, together with the preferred form of mechanism for working the
pressing plate upon that bed.
Upon the shaft, 66, is fixed the crank disk, 76, carrying a crank pin, 77, which
holds one end of the connecting rod, 78, the other end of which rod is pivoted upon
the stud, 79, attached to a rocking carriage, 80. This forwardly and backwardly
moving carriage vibrates upon the shaft, 81 in brackets, 82 and 83. Upon this shaft
revolve two gears, 85 and 86, meshing into two gears, 87 and 88, fixed to the
shaft, 89, in the bracket, 90. Meshing into the gear, 85, the gear, 91, is shown upon
the stud, 92, the latter gear meshing into the intermediate gear, 93, upon the stud, 94,
this gear meshing into the gear, 95, upon the shaft, 23.
Upon the upper part of the carriage, 80, there is a bag-blank clamping apparatus,
consisting of a presser plate, 98, which will be seen by referring to Figures 15, 16,
19 to 23, sheets 2-6 and wbich has a vertical motion to the dotted position shown
in Figure 18. This presser plate is secured to two brackets, 100 and 101, which
receive vertical motion by means of two presser arms, 102 and 103, which are fixed
to a rocking shaft, 104, which arms carry pins, 105 and 106, which enter the
brackets, 100 and 101. To the lower end of the bracket, 100, a link, 107, is attached,
pivoted at 108 to the carriage, 80, which gives the presser plate a parallel motion.
To the shaft, 104, at the outer end of the carriage, 80, there is attached an arm, 109,
to which is pivoted a connecting rod, 110, connected at its other end to a swinging
arm, 111, which arm rocks upon a stud, 112, fastened to the connecting rod, 78. "On
the swinging arm 111, a stud, 113, is fixed, which holds the connecting rod, 110, and
upon its inner end, holds the roller, 114, which runs in a cam groove, 115, in the
crank disk, 76, giving a vibrating motion to the arm, 111, as the crank disk revolves,
and, through the arm, 111, and intermediate parts, imparts a vertical motion at
suitable intervals to the presser plate, 98.
The various mechanisins attached to the travelling folding bed, as we prefer to
construct them, will now be described. They comprise a tuck entering motion, a
blade folding motion for making the primary folds upon the bottom of the bag,
together with a lifting motion for holding a part of the bag bottom.
Carriage, 80, has two ears, 118 and 119, carrying fixed studs, 120 and 121, upon
which are placed the two rocking tuck levers, 122 and 123. These levers are provided
with studs, 124 and 125, carrying cam-rolls, 126 and 127, which run in the cam
grooves, 128 and 129, of cams, 130 and 131; which cams are attached to the gears, 85
and 86, running upon the shaft, 81, at both sides of the carriage, 80. To the
upper end of these tuck levers, 122 and 123, are secured tuck blades, 132 and 133,
which have triangular ends, projecting inwardly towards the center of the machine,
and these blades receive a reciprocating motion at right angles to the motion of the
carriage, 80, as the cams, 130 and 131 revolve. In the upper ends of the tuck
levers, 122 and 123, are placed two shafts, 134 and 135, to which are secured box
blades, 136 and 137, which also have triangular shaped ends. These blades, 136
and 137, are connected with a cam on shaft, S1, and receive therefrom a rotary
reciprocating motion of about one hundred and eighty degrees, as shown in Figures 16
and 21 respectively. This movement is attained by means of connecting devices as
follows: Pinions, 138 and 139, fixed on the box-blade shafts, 134 and 135, are driven
by means of racks, 140 and 141, which slide in casings attached to the upper ends of
the tuck levers: Those racks are operated by means of connecting rods, 142 and 143,
which are connected at the pivots, 144 and 145, to oscillating levers, 146 and 147.
These oscillating levers swing upon the hubs of the tuck levers, 122 and 123, which
oscillate upon studs, 120 and 121, seen best in section in Figure 23, sheet 6. The
opposite ends of the oscillating levers 146 and 147, are bevel sectors, which mesh
into bevel sector arms, 148 and 149, fastened to the shaft, 150, which oscillates in
cars in the carriage, 80. To the outer end of the shaft, 150, is secured the arm, 151,

page_text: carrying a pin, 152, upon which a roller, 153, revolves, engaging in a cam groove, 154,
in the cam, 155, which cam is fixed to the other cam, 130, and revolves with it, thus
transmitting an oscillating motion simultaneously to the arms, 146 and 147, and
through them giving the oscillating motion to the box blades, 136 and 137. The tuck
levers, 122 and 123, and the levers, 146 and 147, are all held upon the studs, 120
and 121, by means of collars, 156 and 157.
The tuck levers, 122 and 123, receive the proper oscillating motion from the
cams, 130 and 131, at suitable intervals, thus driving the blades attached to their
upper ends to and from the carriage. The levers, 146 and 147, also receive a proper
oscillating motion from the cam, 155, at suitable intervals, transmitting an oscillating
motion to the box blades, 136 and 137, all of which motions occur during the rocking
motion of the carriage, 80.
From the front of carriage, 80, two cars, 160 and 161, project, between which a
sector, 162, is pivoted upon a stud, 163. To the upper end of the sector, 162, there
is attached a lifter plate, 164, which is curved at its forward end and which receives
oscillating motion by means of the sector, 162, meshing with and driven by the
sector, 165. This latter sector is fastened to a shaft, 166, swinging in a projecting
bracket, 167, on the carriage, 80; and to the other end of the shaft, 166, is attached
an arm, 168, which carries a pin, 169, and a roller, 170, which roller engages in a
cam groove, 171, in the cam, 172, which cam is attached to the cam, 131, and
revolves with it and transmits an oscillating motion to said lifter plate 164, proper to
hold up and guide the bag blank into the gripper rolls described below.
The mechanism for drawing down the partly folded bag into the diamond
shape, and delivering it from the first travelling bed to the second travelling bed
will now be described. This apparatus includes, besides a roll or rolls for pressing
along the partially folded blank, a sweeper having reciprocating fingers, operated
simultaneously in opposite directions during the stroke of the sweeper. Said sweeper
may be greatly modified as to its structure within the scope of our invention, and it
is shown in two forms, of which the preferred form is incorporated in the principal
views of the machine. Instead of the two gripper rolls, one roll having gripper
fingers thereon may be employed to pass along the bag blank to the second folding
bed; or the said blank may be delivered directly to this latter bed.
Arranged in front of the rocking carriage, 80, two upper gripping rolls, 175
and 176, are shown in Figures 24, 25 and 26, as placed above two lower gripping
rolls, 177 and 178; and in front of these gripping rolls is shown the cylinder, 180,
above which are represented pasting devices, and in front of which are shown flap
folding devices, all hereinafter explained. The cylinder, 180, is fixed to a shaft, 181,
which revolves in uprights, 182 and 183, attached to the bed, 20, of the machine.
To this shaft, 181, a gear, 184, is attached, which is driven from the intermediate
gear, 185, which meshes into the gear, 193, fastened to the shaft, 89, in the bracket, 90.
The gear 184, also meshes into an intermediate gear, 186, which drives a gear, 187,
upon the shaft, 188, upon which the lower gripper rolls, 177 and 178, are
attached; and the shaft 188, runs in adjustable boxes, 189 and 190, placed in grooves
in the uprights, 182 and 183. These boxes are supported by spiral springs, 191 and
192, in the uprights, 182 and 183. To the other end of the shaft, 188, is attached
another gear, 194; and meshing into the two gears, 194 and 187, are shown two
small gears, 195 and 196, fastened to shafts, 197, and 198, which run in brackets
199 and 200, and carry the two upper gripper rolls, 175 and 176, the brackets, 199
and 200, being fastened to the uprights, 182 and 183. By this arrangement of the
shaft, 188, in boxes, 189 and 190, together with the spiral springs, 191 and 192, the
lower gripper rolls, 177 and 178, are pressed upwards against the upper gripper
rolls, 175 and 176. Attached to the upper ends of the brackets, 199 and 200, is
shown a rod, 203, upon which a sector lever, 204, oscillates, one of whose ends
terminates in an arm, 205, carrying two sweeper shafts, 206 and 207, whose lower
ends are bent at about right angles, to form the sweeper fingers, 206¹ and 207',
and to whose upper ends are fastened sector pinions, 208 and 209, respectively;
the sector pinion, 208, has an arın upon which a stud, 210, is fixed, upon

page_text: which a roll, 211, is shown, engaging in a cam groove, 212, of the cam, 213,
fixed on rod, 203. As the arin, 205, is oscillated, the sweeper shafts, 206 and 207,
receive a rotary-reciprocating motion, being vibrated by means of the roller, 211,
working in the cam, 213. The arm, 205, also carries a plate, 214, shown in
Figure 26, whose functions will be hereinafter described. The arm, 205, derives its
oscillating motion from the sector, 204, meshing into a sector lever, 215, carried on
the stud, 216, fastened to the upright, 183. The other end of the lever, 215, carries
a stud, 217, and a roll, 218, engaging in the cam groove, 219, of a cam, 220, on
shaft, 221, which shaft runs in the upright, 183, and is driven by a gear, 222, meshing
into the gear, 223, on shaft, 224; the latter gear meshing into. the gear, 184, as
before described.
A plate, 226, is shown in Figures 24 to 26, fastened to an arm, 227, and having
a vibratory motion with it, upon a hub, 228, of the bracket 200. At the other end
of the arm, 227, is shown a sector gear, 229, meshing into a sector arm, 230, fastened
to a shaft, 231, in the upright, 163. To the other end of the shaft, 231, is fastened
the arm, 232, carrying the stud, 233, and the roller, 234, engaging in the cam groove,
235, of a cam, 236, and fastened to the shaft, 188. This cam, 236, communicates the
proper vibrating motion to the plate, 226; the plate, 220, has two extensions reaching
to both sides of the upper gripper rolls, 175 and 176, and over the lower gripper
rolls, 177 and 178. Between these upper two rolls and extending beyond them, are
shown two guides or fingers, 237 and 238, which are secured to a rod, 239, fixed in
the uprights, 182 and 183.
We will now describe the operation of the various mechanisms connected with
the second travelling folding bed, as we prefer to construct them. They comprise
paste applying devices, creasing and gripping apparatus, and flap folding devices
operating to retract the bag, upon the travelling folding bed.
Above the cylinder, 180, and upon the shaft, 224, the paster roll, 242, is so placed
as just to clear the cylinder, 180. The roll, 242, has an extension, 243, forming two
paste applying surfaces which lengthen the central paste applying surfaces of the
roll, 242. Paste is applied to these surfaces by a paste sector, 244, fastened to the
shaft, 221, which receives paste from a distributing roll, 245, upon the shaft, 246,
which runs in the upright, 183, and is driven by a gear, 247, meshing into the gear, 222.
Paste is taken from a paste dish, 248, supported by a rod, 249, fastened to the
upright 183. The paster roll, 242, carries two creasing blades, 251 and 252, which
are as wide as the cylinder, 180; the paster roll, 242, also carries two pressers or
sector rolls, 255 and 256, the diameter of which is a little larger than that of the
roll, 242; being just half the diameter, or other aliquot part, of the cylinder, 180, and,
when over this cylinder, just touching it.
The cylinder, 180, is provided with duplicate sets of gripping, creasing, and
folding devices, which devices are arranged diametrically opposite one another, but
we will describe only one set of these devices, because the description of its parts and
operation applies equally to those of the other.
The grooves, 257 and 258, match the creasing blades, 251 and 252, upon the
roll, 242 which blades enter the grooves a short distance as the cylinder revolves.
A little beyond the first creaser groove in the cylinder, 180, is arranged a pair of
yieldingly-held grippers, 259 and 260, which are secured to a shaft, 261, that
oscillates in bearings in the cylinder 180. Said grippers, 259 and 260, project through
holes in the rim of the cylinder, 180, and are bent so as to reach over and press upon
the outer circumference of this cylinder. This pressing is effected by a small
spring, 262, which rests upon the arm, 263, attached to the shaft, 261, at its outer end.
The grippers, 259 and 200, are raised and lowered at suitable intervals by means of the
roller, 265, upon the arm, 263, coming in contact with the cams, 266 and 267.
These cams are secured to a hub, 268, which is an extension of the upright, 182, and
through whose center the shaft, 181, revolves.
In the cylinder, 180, and to the rear of the second creaser groove, 258, there is
placed in the cylinder a shaft, 270, extending through the cylinder and carrying on
both sides thereof a pair of take-up arms or retracting fingers, 271 and 272, whose

page_text: outer ends are bent at right angles and extend into recesses, 273 and 274, in the
cylinder, 180. In Figure 24 one of these arms, 272, is omitted for clearness, the
shaft, 270, being broken off a little beyond the edge of the cylinder. These ends of the
arms, 271 and 272, are represented inside the circumference of the cylinder, 180,
and are moved outwards beyond its circumference at proper intervals by means of
an arın, 275, fastened to the shaft, 270; this arm carries a stud, 276, and a roll, 277,
running in a cam groove, 278, of a cam, 279, shown clearly in Figure 25, where the
web, 281, of the cylinder 180 is shown broken away. The cam, 279, is omitted in
Figure 24 for clearness, but is shown in Figures 25, 27, 30 and 31, being secured to a
hub, 282, which forms an extension of the upright, 183. As the cylinder, 180,
revolves, the cam, 279, transmits motion to the take-up arms, 271, and 272, giving
them a vibratory motion at proper intervals.
The cylinder, 180, also carries at its sides a pair of side clips 285 and 286 which
are shown in Figures 25, 27, 30, and 31, and only on one side of the cylinder in
Figure 24, being omitted on the other side for clearness. These side clips, 285 and
286, are placed at an angle on the sides of the cylinder, and oscillate upon studs,
287, and 288, which are secured to ears, 289 and 290, attached to the cylinder 180.
The outer ends of the side clips, 285 and 286, are bent inwards toward the cylinder,
and each of the clips have two projections, the shorter ones being represented by the
numbers 291 and 292 which projections extend a little in advance of the second
creaser groove, 258; and when closed over the cylinder, 180, reach over its edge a
short distance; the longer projections, 293 and 294, extend farther inwards and form
guiding fingers, which, when swung over upon the cylinder, 180, reach a little to the
rear of the second creaser groove, 258, and considerably inward from the edge of the
cylinder. These projections, 293 and 294, are beveled backwards, being open at the
front, and being closed at the back by corner pieces, 295, reaching to within a short
distance of the surface of the cylinder, as shown in Figures 30 and 31. These clips,
285 and 286, receive an oscillating motion at their inner end by means of studs, 296
and 297, and rollers, 298 and 299, which engage in cam grooves, 300 and 301, in
cams, 302 and 303, which cams are fixed to the hubs, 268 and 282, of the uprights,
182 and 183. Cam 303 is omitted in Figure 24 for clearness. These cams, 302
and 303, are constructed to communicate the required oscillating motion to the side
clips, 285 and 286, at proper intervals during the revolution of the cylinder, 180.
Operating in connection with the second travelling folding bed are shown flap
folding and delivering apparatuses which operate to do the final flap folding and to
deliver the bags from the machine.
Arranged in front of the cylinder, 180, upon the shaft 310, which shaft rests in
bearings in the two uprights, 308, and 309, on the bed, 20, of the machine are shown
three folder arms, an inner one, 311, and two outer ones, 312 and 313, all of whose
ends are bent and terminate in blades 314, 315 and 316 respectively. These blades
receive an oscillating motion by means of a sector, 317, fastened to the shaft, 310,
which meshes into a sector ended lever, 318, which oscillates upon a stud, 319, fixed
to the upright, 309. At the other end of the lever, 318, is shown a stud, 320, and a
roller, 321, which engages in the cam groove, 322, of a cam 323. This cam, 323, is
fixed to a shaft, 324, which turns in the uprights, 308 and 309, and is driven by a
gear, 325, meshing into a pinion, 326, which is driven by a shaft, 327, running in the
upright, 183, by means of a gear, 328, meshing in the gear, 184, before described.
The shaft, 324, carries a roll, 329, above which is shown another roll, 330, upon a
shaft, 331, running in the uprights, 308 and 309. The shaft, 331, is driven by a
gear, 332, meshing into the gear, 325, before described. The rolls, 329 and 330, are
arranged so as just to clear each other. Between the cylinder, 180, and the rolls,
329 and 330, are shown two narrow rolls, 335 and 336, which are secured to shafts,
337 and 338, which run in the uprights, 308 and 309; and these shafts are driven
by gears, 339 and 340, respectively, the former meshing into the gear, 326, and
driven by it.
In front of the cylinder, 180, is shown a curved plate, 341, which extends at
both sides of the rolls, 335; and also extends a little beyond the sweep of the blades,

page_text: 315 and 316, which blades in their motion downward pass at both sides of the roller,
336, and a little beyond it; and the roller, 336, is placed just to clear the roller, 335.
The operation of the machine is as follows:
Continuous tucked paper tubing, 57, while being manufactured upon a former, 56,
of a machine suitable for producing such tubing, is drawn forward into this
machine by the drawing rolls, 36 and 37, and passes between the pressing rolls, 53
and 54, and under the lip knife, 60.
In its progress forward from the former through these rolls, the tube, 57, envelopes
the former knife, 58, the upper ply, 14, Figure 3, of the tube passing over the knife, 58,
while the lower ply of the bag and the two plies of the tucks pass below it; and at
the same time the slitter knives rotate and cut slits, 4 and 5, into the tube, doing this
once for each bag length required. The tube is fed forward from the knife, 58, onto
the upper portion of the first traveling folding bed or carriage, 80, during its back-
ward stroke while the presser plate, 98, is elevated to its upper position as shown
in Figure 18. The presser plate, 98, descends upon the tube and clamps it to the
carriage, 80, at approximately the time when the latter commences its forward stroke,
a sufficient amount of this tube being fed beyond the forward end of this presser
plate to form a bag bottom. The forward motion of the carriage being at this point
slower than that of the tube, 57, the tube is bent downward as shown in Figure 15,
forming a slackness therein until the striker, 61, passes in front of the knives, 58 and 60,
and takes up this slack and breaks or tears off a bag length, all of which is done
once for every revolution of the crank, and every stroke of the carriage.
The taking up of the slack by the striker, 61, causes the paper to stand at an
angle approaching ninety degrees to the cutting edges of the two knives, so that, as
the striker passes them, it tears off the tube with great ease and produces a clean
break. The position of the parts at the beginning of the breaking, is shown in
Figure 18.
The shape of the cut produced is shown in Figures 1 and 2 by the lip, 6, in the
end of the bag and the recess, 7, in the on-coming tube; and the breaking off is so
timed as to bring the slits 4 and 5 at the forward end of the broken off tube, 57.
During the backward stroke of the carriage, 80, and while the tube passes under
the presser plate, 98, the tuck blades, 132 and 133, and the box blades, 136 and 137,
are rocked forward into the tucks, 2 and 3, of the paper tube as shown in Figures 15,
16, and 19. These blades are enabled to enter the tucks of the tube, on the backward
stroke of the carriage, 80, because the upper and lower plies of those tucks naturally
spring apart, by their own elasticity, and because the drawing rolls, 36 and 37, have
not flattened the turns of those tucks, and thus deprived them of that tendency. The
entering of the blades on the backward stroke of the carriage has the important
advantage of gaining time for making the primary fold, which is thereby readily
completed before the carriage finishes its forward stroke. The machine, therefore
has a greater capacity, with less velocity of movement in many of its parts, than it
would possess if the blades entered the tucks on the forward stroke of the carriage.
After these blades have entered, and after the presser plate, 98, has gripped the tube,
and during the forward motion of the carriage, the box blades, 136 and 137, are
turned over backwards, thus folding the forward part of the bag as shown in
Figure 21. During the forward motion of the carriage, the sweeper shafts, 206
and 207, and the plate, 214, enter the forward end of the box, 8, and after the box
has been folded as shown in Figure 21 they swing forward and draw the box, 8,
down into the diamond shape, 9, as shown in Figures 22, 24, and 25, the bent feet
of the sweeper shafts being turned outwards as shown in Figures 24 and 28. During
this operation of forming the diamond, the lifter plate, 164, is brought upwards
pressing the forward end of the diamond, 9, against the plate, 214, thus holding it
securely. At the same time the plate, 226, descends upon the flattened diamond
and prevents it from springing upwards as the bag passes forward. The sweeper
shafts, 206 and 207 then draw the diamond forward into the bite of the gripping
rolls, 175 and 177, and 176 and 178. The presser plate, 98, is then elevated a little,
the lifter plate is dropped a little, and the fuck levers, 122 and 123, withdraw the

page_text: four blades from the bag, taking the position shown in figure 20, after which the box
blades revolve back to the position shown in Figures 15 and 19. The sweeper shafts
206 and 207, are then driven forward with greater speed than that of the bag, and
the bent ends 206 and 2071 thereof are turned inwards and withdrawn from the bag
as shown in Figure 29.
As the bag passes forward, it is flattened by passing under the rolls, 175 and 176,
and plate, 226, and over the rolls 177 and 178, the rearward half of the diamond
being fully flattened between the plate, 226, and the plate, 98. It then passes forward
under the fingers, 237 and 238, and upon the cylinder, 180, the forward end of the
diamond being gripped by one of the pairs of grippers, 259 and 260, which draws
the bag forward under the paster roll, 242, which applies the paste to the diamond.
The creaser blade, 251, enters the recess, 257, in the cylinder, 180, and creases the
bag across the line o p, Figures 10 and 12, to facilitate subsequent folding operations.
The creaser blade, 252, then enters the groove, 258, in the cylinder, 180, and creases
the bag across the line qr, Figure 10. This causes the second flap il to rise into the
position shown in Figures 11, 25, and 27. While in this position, one of the two
pairs of side clips, 285 and 286, is rocked upon the cylinder and over the edge of the
bag, the projections, 291 and 292, taking a position over the edges of the bag and
preventing the bag from rising from the cylinder. This motion of the side clips also
projects the ends, 293 and 294, over the bag and behind the flap, 11, which has been
raised as before described. As the cylinder revolves forward the flap, 11, is supported
by the projections, 293 and 294, which prevent it from dropping down to its former
position.
After the flap, 11, has passed beyond the roll, 242, the presser sectors, 255 and 256,
arrive upon the rear end, 1, of the bag and firmly press it to the cylinder, 180, as
this revolves, as shown in Figures 30 and 31. By this time the grippers, 259 and 260,
will have released the forward end of the diamond which will spring outward under
the folding blades, 315 and 316, and over the plate, 341, and over the roll, 336, as
shown in Figure 30. While the presser sectors, 255 and 256, pinch the rear end of
the bag, the forward ends or fingers of the take-up arms, 271, and 272, move outward
beyond the circumference of the cylinder to the position shown in Figure 30, and
from that to that shown in Figure 31. This draws the forward end of the bag
backward upon the cylinder, the projections on the side clips, 285 and 286, allowing
the bag to do so. The object of pulling the bag backward is to fold forward the
second flap, 11, as shown in Figures 30 and 31. This is accomplished by the upper
ends of the projections, 293 and 294, of the side clips coming in contact with the
flap, 11, above gr. The bag is drawn backwards until it comes in contact with the
corner pieces, 295, after which the take-up arms, 271 and 272, are gradually returned.
The flap, 11, having been folded forward is now assisted by the folding blade, 314, as
shown in Figure 31 which moves downward with the folder blades, 315 and 316, the
first one serving to keep the flap, 11, close to the bag bottom while the last two
double over the first flap, 10, at the folding line o p, folding it upon the flap, 11, and
delivering the bag between the rolls, 335, and 336. The side clips, 285 and 286, are
meanwhile rocked outward from the cylinder, thus freeing the folded bag which then
passes between the rolls, 329 and 330, which flatten and deliver it completed. The
bag then passes to suitable drying apparatus not shown in the drawings.
In order to pass the bag between the gripping rolls, 175 and 176, and 177 and 178,
the bearings, supporting the latter rolls, are made elastic as represented. This same
arrangement of elastic bearings may be applied to the rolls, 242, 336 and 330, in
order to avoid crushing the bag unduly, but such bearings are not shown in the
present drawings.
The drawings represent double sets of grippers, 259 and 260, and of side clips,
285 and 286, and of take-up arms, 271 and 272, each of which sets act in succession
upon the partly folded bags as they are delivered to the cylinder. This duplication
of parts though not essential, is believed to be preferable, because the enlargement of
the cylinder thereby obtained, allows the use of larger cams at the side of the cylinder,
and does not require the bag to be bent around so small a circumference.
U

page_text: We will now describe some modifications of mechanisms that may be applied to the
first travelling folding bed, without departing from the scope of our invention. The
first of these is shown in Figures 32 and 33, and represents a modified form of
mechanism for imparting motion to the presser plate, 98. The travelling folding bed
is shown as before at 80, pivoted on the shaft, 81, between the two cams, 130 and 131,
in which the presser plate shaft, 104, is also shown and upon which shaft the presser
arms, 102 and 103 are fixed, at whose extremities are swung brackets, 100 and 101,
on the pivots, 105 and 100; the lower end of the bracket, 100, being steadied by the
link, 107, swinging upon the pivot, 108, projecting from the carriage, 80, and to which
brackets the presser plate, 98, is fastened, all in the manner before described. The
proper motion is imparted to this presser plate, 98, by mechanism driven from a cam
upon the shaft, 81. The cam groove is shown at, 350, cut in the side of the cam, 130;
and a roller, 351, upon the stud, 352, engages in the groove, the stud being secured
to the lower end of a lever, 353, which swings upon a stud, 354, fastened to an car, 355,
upon the carriage, 80. To the other end of the lever, 353, a connecting rod, 356, is
jointed upon a stud, 357. This connecting rod, at its other end, is jointed upon a
stud, 358, to the arm, 359, which arm is fastened to the shaft, 104, before described.
Motion is imparted to the presser plate, 98, by means of the shaft, 104, being driven
by the arm, 359, the connecting rod, 356, the lever, 353, and the cam groove, 350,
which groove is so cut as to impart this motion at proper intervals.
A second modification is applied to the first travelling folding bed, and is shown
in side view in Figure 34 upon a reduced scale. Here the carriage, 80, is not swung
upon the central shaft, 81, but is swung upon a pivot, 365, adjacent thereto, which
-pivot is fastened to a bracket, 366, upon the bed, 20, of the machine. The shaft, 81,
carries the cam, 130. The carriage, 80, carries mechanism similar to that shown in
Figure 32.
It is obvious that all motions communicated by cams upon the shaft, 81, to
mechanisms upon the carriage, 80, will have to be so far modified as to allow for
the different position of the pivot, 365, but these differences of motion do not effect
the results obtained in the folding operations performed upon the bag blank.
We will next describe various modifications that may be applied to the second
travelling folding bed, and refer to the mechanism for retracting the bag upon
the bed, as well as to the bed itself. In the principal figures, this bag retracting
apparatus is shown as constructed in Figures 24, 25, 26, 27, 30, and 31, and here
the retracting fingers are arranged to act from the inside towards the outside
of the endless folding bed, 180.
A modified form of retracting fingers, operating from the inside to the outside
of the folding bed is shown in Figures 35 and 36. Here, in place of the swinging
take-up arms, there are shown two radially sliding retracting fingers, 370 and 371.
These fingers slide in grooves, 372 and 373, in the cylinder, 180, and receive
a reciprocating motion by means of sectors, 374 and 375, meshing into racks cut
upon the fingers 370 and 371. The sectors, 374 and 375, are pivoted upon the
shaft, 376, to whose outer end an arm, 377, is fastened, which carries upon its extremity
a stud, 378, and roller, 379. This roller engages in a cam groove, 380, in a cam, 381,
which is fixed to the hub, 282, of the bracket 183.
The remaining parts shown in Figure 35, that is, the paster roll, 242, the creasing
blades, 251 and 252, the presser sector roll, 255, on the shaft, 224, are similar
to the parts before described, as are also the side clip, 285, the stud 287, roller, 298,
and the cam, 302.
The operation of the retracting fingers, 370 and 371, is similar as to time of
movements, to the retracting fingers, 271 and 272, and they perform the same
functions.
We will now describe a modified form of a travelling folding bed, which carries
a bag retracting mechanism operating outwardly to retract the bag. This is shown
in side view in Figure 37, wherein the travelling folding bed is represented as
a carriage, 390, upon a slideway, 391, upon which it may receive a reciprocating
motion from a connecting rod, 392, connected to a pin, 393. This carriage, 390,

page_text: moves backward and forward one to each revolution of the paster roll, 242, and presser
sector roll, 255, upon the shaft, 224. The roll, 242, carries the creasing blades,
251 and 252, which enter the creasing grooves, 394 and 395, in the carriage, 390,
in succession, as the carriage passes beneath the roll, 242, and so creases the bag
blank at the folding lines o p and qr, Figure 10. The carriage, 390, carries at
its sides a pair of side clips, 390, one of which only is shown in the drawing. This
clip, 396, is pivoted to the stud, 397, fastened to an ear, 398, of the carriage, 390.
The pair of clips, 396, are provided with a pair of studs, 399, upon which rollers, 400,
revolve, which engage in right and left land spiral cam grooves in a pair of cams, 401,
fastened to a shaft, 402. As the shaft is oscillated, the pair of cams, 401, by means
of their spiral grooves, impart a swinging motion to the pair of side clips, 396,
as shown in Figures 28 and 29. The pair of clips, 396, have projections, 291 and 293,
and corner pieces 295, similar to those before described. The oscillating motion
is imparted to the shaft, 402, by means of a lever, 403, whose upper end comes
in contact with a rod, 404, and whose lower end collides with a spring pawl, 405,
as it reciprocates. The carriage, 390, also carries a pair of retracting fingers, 406,
fastened to a shaft, 407, to which shaft an arm, 408, is secured, carrying a roller, 409,
which is vibrated, as the carriage reciprocates, by means of a switch cam, 410, which
is hinged to a stud, 411, upon a track, 112. The roller, 409, collides with the
switch cam, 410, in the forward motion of the carriage, 390, and moves the retracting
fingers, 106, outwardly as shown in the drawing, and after the roller, 409, has
passed the end, 413, of the switch cam, 410, it drops down upon the track, 412, and
passes on the backward stroke of the carriage beneath the switch cam, 410, elevating
it until it has passed beyond its length. The successive operations of bag retracting
and flap folding are similar in this travelling folding bed to the endless one described,
that is, after the bag has been creased and the pair of side clips, 396, have been swung
over the bag and the presser sector roll, 355, has gripped the tail of the bag
upon the carriage, 390, the retracting fingers, 406, are operated outwardly as the
carriage, 390, advances, thus drawing the forward part of the bag back, drawing the
flap, 11, underneath the projections, 293, of the clips, 396, after which the retracting
fingers drop and the next folding operations may be performed.
The next two modifications of retracting fingers, operating in connection with an
endless travelling folding bed, are shown in Figures 38 to 41. In these modifications
the retracting finger operates from the outside of the bed, pressing the bag inwardly
into it. The first of these modifications is shown in two positions in Figures 38 and 39
in side view, and resemble Figures 30 and 31 except that the retracting fingers and
In the place
their connecting mechanism are entirely omitted from the cylinder, 180.
thereof a revolving retracting finger, 416, is introduced into the combination. This
finger, 416, is attached to a shaft, 417, which shaft revolves in bearings in the
uprights of the machine, and is driven by a gear, 418, meshing into a gear not shown,
which drives the cylinder 180, and the shaft, 181. The outer end of the finger, 416,
projects in its revolution, into a recess, 419, of the cylinder, 180, and operates to draw
the bag back in the following manner: The partly folded bag having been gripped
upon the cylinder, 180, properly creased as before described, and moved along
sufficiently far to enable the presser sector rolls, 255, to grip the bag upon the cylinder:
the outer end of the revolving retracting finger, 416, presses upon the bag blank,
forcing it into the recess, 419, of the cylinder, 180, as shown first in Figure 38 and
then in Figure 39, drawing the forward end of the bag backward, and folding the
flap, 11, over in a manner similar to that described in the principal figures. During
the further revolution of the finger, 416, it moves out and away from the cylinder,
operating at its next revolution upon the next bag blank.
The second modification of the retracting finger oporating inwardly towards the
travelling bed is shown in Figures 40 and 41, where in the place of a revolving re-
tracting finger, 416, a retracting finger having a variable motion is shown, travelling
This finger, 423, extends across the
in the path shown by the dotted line, 422.
cylinder, 180, and is attached to a slide, 424, which moves in grooves in a yoke, 425,
which is pivoted at 426 to a rocking arm, 427, rocking upon a pivot, 428; attached

page_text: a
to the upright, 429. Near the other end of the yoke, 425, is shown a crank pin, 430,
fastened to the cam disk, 431, which communicates a rocking motion to the yoke, 425.
The cam disk, 431, is attached to a shaft, 432, and receives motion through
gear, 433, which meshes into a driving gear not shown, upon the shaft, 181. Around
the crank pin, 430, a cam groove, 434, is cut, in which a pin, 435, attached to the
slide, 424, engages. As the cam disk, 431, revolves, imparting a rocking motion to
the yoke, 425, the slide, 424, also receives a reciprocating motion at proper intervals,
giving to the finger, 423, a motion substantially as that shown by the dotted line, 422.
The cylinder, 180, is provided with the recess, 419, to allow of the passage of the
finger, enabling this finger to retract bag blanks, substantially in the same manner as
shown in Figures 38 and 39.
The next two methods for retracting a bag blank upon an endless travelling bed
are shown in Figures 42 to 46. The first of these is shown in two positions in
Figures 42 and 43. In these views the points of similarity to the methods described
in the principal Figures consist of the cylinder, 180, the side clips, 285, which are here
only partly shown, the paster roll, 242, and the creasing blades, 251 and 252. Instead
of retracting the bag by means of fingers previously described, it is pulled back
bodily, sufficiently to fold forward the flap, 11, by means of gripping fingers, 138
and 439, which grip the bag and hold it long enough to effect the desired retraction.
The fingers, 439, are pivoted on the hub, 448, of the cylinder, and the fingers, 438,
are pivoted on the shaft, 224. During the forward motion of the cylinder, 180,
a retarded motion is communicated to the fingers, 439, which communicate a re-
tarded motion to the fingers, 438, opening the spring, 440, as shown in Figure 13. The-
retarded motion communicated to the fingers, 139, is effected in the following manner.
To the fingers, 439, are attached sectors, 441, meshing into sectors, 442, upon a
shaft, 443, in the cylinder, 180. To this shaft is fixed an arm, 444, carrying a roller,
445, engaging in a cam groove, 446, in the cam, 447. As the cylinder, 180, revolves,
the roller, 445, is moved outwardly by the cam groove, 446, imparting through the
lever, 444, shaft, 443, and sectors, 442 and 441, a retarding motion to the fingers,
439. The same object may be obtained by stopping the motion of the fingers, 449,
as may be desired. After the bag has been retracted, the grippers, 438 and 439,
both move forward into their positions of rest as shown in Figure 42.
The second method shown in Figures 14 to 46, performs the same bodily retrac-
tion of the bag as that just described, the only point of difference, being in the
method of gripping the bag itself. Here, the retracting fingers, 450 and 451, carried
by the cylinder are pivoted on a shaft, 452, in the cylinder, 180, and receive a re-
tracting motion by means of an arm, 453, carrying a roller, 454, engaging in a cam
groove, 455, of the cam, 456, fastened to the hub, 282, of the bracket, 184. The
upper ends of the retracting fingers, 450 and 451, are provived with upper retracting
fingers, 457 and 458, fastened to a shaft, 459, which shaft oscillates in these fingers,
450 and 451, being vibrated by an arm, 460, shown in an enlarged view in Figure 47.
This arm, 460, is rocked in and out by posts, 461 and 462, shown in section in the
drawings, they being fixed to the main bracket of the machine. To the shaft, 459,
is secured a small cam, 463, against which a bolt, 464, is pressed by means of a
spring, 465, which holt and spring are held by a projection upon the finger, 450. In
this combination of parts, the end of the bag blank is gripped between the retracting
fingers, 450 and 451, and the upper fingers, 457 and 458, as shown in Figure 44, a
retarding motion is then given to these fingers, drawing the bag blank into the position
shown in Figure 45.
We now lastly describe a modification of the mechanism for operating the fingers
upon the sweeper for drawing down the partly folded bag into the diamond shape.
This is shown in Figures 48 and 49. Here the rod, 203, supports the cam, 213,
and sector lever, 204, with its arm, 205, all similar to those shown in the principal
figures. In Figures 48 and 49 the fingers are constructed at their lower ends
substantially as shown in the principal figures, and are arranged and operated as
follows: Two fingers, 468 and 469, are pivoted at 470 and 471 on the arm, 205, of
the lever, 204, and are provided with sectors at their upper ends which mesh into

page_text: each other.
The finger, 468, is a lever, whose upper end carries a roller, 472,
engaging in the cam groove of the cam, 213. As the arm, 205, vibrates, as shown in
the principal figures, the lever finger, 468, receives motion from the cam, 213, and
communicates motion to the finger, 469, and thus the two fingers swing towards each
other, and by the continued vibration of the arm, 205, are drawn away from the forward
end of the diamond.
Having now particularly described and ascertained the nature of our said invention,
and in what manner the same is to be performed, we declare that what we claim is :—
1. The combination of drawing rolls to bring the tubing into the machine; a
carriage provided with a clamping apparatus to seize and hold that tubing; and two
knives and a striker between those rolls and that carriage, operating to sever the tubing
when the rolls and the carriage have clamped it, and have made a slack therein; all
substantially as described.
2. The combination in a bag machine of the folding bed thereof; two oppositely
disposed levers, each carrying a pair of blades, substantially as described the cams 130
and 131, working those levers; and the cam 155, and connecting mechanism substan-
tially as described, working one member of each pair of those blades; all substantially
as described.
3. The combination of the rocking carriage 80; the levers 122 and 123, pivoted to
that carriage, and provided with the blades 136 and 137, respectively; the cams 130
and 131, working those levers; and the cam 155, and connecting mechanism
substantially as described, working those blades; all substantially as described.
:
4. The combination of the rocking carriage 80; the presser plate 98, rising and
lowering upon that carriage; the cam 180 and mechanism substantially as described
between that cam and that presser plate, and operating to work the latter all sub-
stantially as shown in Figures 32, 33, and 34 of the accompanying drawings, and
described in the foregoing specification.
5. The combination of the rocking carriage 80; the lifter plate 164, pivoted to
that carriage and projecting forward therefrom; the cam 172, and mechanism sub-
stantially as described between that cam and that lifting plate, and operating to work
the latter all substantially as described.
;
6. The combination of a reciprocating carriage, carrying a clamping apparatus; the
plate, 214, oscillating forward on the arc of a circle; and the lifting plate, 161, the
working end of which moves forward on a curved line corresponding with that arc, so
as to clasp the forward end of the diamond, between those two plates, and to deliver
the same to mechanism adapted to receive it; all substantially as described.
7. The combination of two mated bent sweeper fingers, reciprocating toward and
from each other, crosswise of the bag blank, and reciprocating side by side, lengthwise
of the bag bank; all substantially as described.
8. The combination of the two axially oscillating sweeper shafts, 206 and 207,
provided with the terminal sweeper fingers, 2001 and 2071, respectively, and worked
together by means of the sector pinions, 208 and 209, while oscillating side by side; all
substantially as described.
9. The combination of a reciprocating sweeper arm, carrying oppositely disposed
reciprocating sweeper fingers; and a cam operatively connected with those fingers
for working them during the stroke of the sweeper arm; all substantially as
described.
10. The combination of the oscillating arm, 205; the shafts, 206 and 207, carried on
that arin and having bent sweeper fingers at the ends thereof; and a cam operatively
connected with those shafts, and imparting thereto simultaneous movements in opposite
directions; all substantially as described.
11. The combination of lower and upper gripper rolls, the latter being divided by a
clear space in the middle; and a reciprocating sweeper, having its stroke extending
into that space, and operating to draw the forward end of the diamond into the bite of
the upper and lower rolls; all substantially as described.
12. The combination of lower and upper gripper rolls, the latter being divided by a

page_text: clear space in the middle; the plate, 164, under the diamond; and the plate, 214, over
the diamond both plates operating to clasp the forward extremity of the diamond,
and to carry it into that clear space, so as to deliver the diamond to the bite of the
lower and upper gripper rolls; all substantially as described.
13. The combination in a bag machine, and with the folding bed thereof, of side
clips rearward of the second flap, a presser or pressers operating on the bed rearward
of the side clips, to clamp to the bed the rearward end of the bag blank, and a retracting
finger or fingers operating laterally against the bag blank between said presser and
clips, whereby the forward end of said blank is drawn back under said clips, for
the folding over of the second flap, substantially as described.
14. The combination in a bag machine, and with the travelling folding bed thereof,
of side clips carried with said bed rearward of the second flap, a presser or pressers
operating on the bed rearward of the side clips, to clamp to the bed the rearward end
of the bag blank, and a retracting finger or fingers carried on the bed and operating
laterally against the bag blank between said presser and clips, whereby the forward
end of said blank is drawn back under said clips, for the folding over of the second
flap, substantially as described.
15. The combination in a bag machine, and with the cylindrical travelling folding
bed thereof, of the sido clips rearward of the second flap of the bag blank, a presser
operating to clamp said blank rearward of said clips, and a retracting finger or fingers
operating outwardly against the blank between said clips and said presser, whereby
said blank is drawn back under the clips for the folding of the second, flap thereof,
substantially as described.
16. The combination with the revolving cylinder 180, and with the presser acting
against said cylinder, of the side clips 285, 286, the retractor-pivoted to the cylinder,
and cams and connections actuating said clips and retractor, all constructed and
operating substantially as described.
17. The combination of cylinder, 180, having groove, 258, creasing blade operating
in said groove, clips, 285, 286, carried on the cylinder and each having one finger
forward and one rearward of said groove, all constructed and operating substantially
as described.
18. The combination in a bag machine, of the travelling folding bed having
grooves crosswise to the motion thereof, mechanism holding the bag blank on said
bed over said grooves, creasers operating in connection with the grooves to crease the
blank, rolls for receiving the creased blank from said bed, and the blades operating to
deliver the blank folded at said creases from said bed to said rolls, all substantially as
described.
19. The combination in a bag machine of the travelling folding bed, carrying the
partially folded and creased bag blank, rolls, 335, 336, the lower blades, 315 and 316,
and blade, 314, above and between said lower blades, all arranged and operating
substantially as described.
Dated this Twelfth day of April 1887.
WILLIAM A. LORENZ.
WILLIAM H. HONISS.