Improvements in the Manufacture of Paper Bags, and in Machines therefor.
Year: 1898

page_text: Date of Application, 16th Aug., 1898-Accepted, 29th Oct., 1898
[Communicated from abroad by HUGO BILGRAM, of 751, North 40th Street,
Machinist, and RICHARD MAX UHLMAN, of Twelfth and Noble Streets,
Machinist, both in Philadelphia, Pennsylvania, United States of America.]
Improvements in the Manufacture of Paper Bags, and in Machines
therefor.
I, HENRY HARRIS LAKE, of the Firm of Haseltine, Lake & Co., Patent Agents,
45, Southampton Buildings, in the County of Middlesex, 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:-
These improvements are shown embodied in an organized machine adapted for
forming a completely folded and pasted bag from a continuous roll of paper;
and these improvements are especially adapted to the formation of a satchel-
square" bottom upon a bellows-side-fold tube.
A part of these improvements relates to the tube forming devices by which the
paper is formed into a pasted tube, and is designed particularly to equalize the
tension upon the paper throughout the tube forming devices while the tube is
being formed, whereby wrinkling and tearing of the paper is avoided and a perfect
continuous tube may be formed at a very high speed.
Another part of the invention relates to the slitting devices, used in machines
of this character for making slits in the paper tube at intervals, to form tabs upon
the ends of the tube sections, and this part of the invention is designed especially
for controlling the operation of such slitters, whereby their speed may be regulated
to suit the speed with which the paper is moving, whether it be faster or slower,
and their time of operation may be suitably regulated to ensure the slits being made
at the proper intervals apart.
Another part of the invention relates to the cutting devices, and consists particu-
larly in certain improvements in the swinging cutter bar or striker, and in the
means for operating it, whereby the line of movement of the bar or striker is
confined wholly within the body of the machine.
Another part of the invention relates to the bottom formers by which the end
of the paper tube is formed into the proper folds before passing to the final folding
and pasting devices; and this part of the invention is designed particularly for
enabling a satchel square bottom to be formed on a bellows-side-fold tube by the
action of suction with great rapidity and precision; this part of the invention also
includes improvements in the means for applying the suction to the suction
formers by which the bottom is folded, whereby the use of external suction tubes
leading to the suction formers is avoided, and improvements in the devices for
assisting the suction formers at the completion of their operations in forming the
folds on the ends of the tube sections.
This invention also relates to the devices for clamping the tube sections while
their ends are being folded by the bottom formers and automatically releasing
017

page_text: them after the bottom folds are formed; and these improvements are designed
to attain greater simplicity of construction and certainty of action.
Another part of the invention relates to the final folding and pasting devices,
and is designed to enable the final folds, which are formed in the paper tube
after it is delivered from the bottom formers, to be made with greater accuracy
and speed.
Another part of the invention relates to printing devices for printing an
impression upon the paper bags during their process of construction, e.g. for
indicating the capacity thereof, and this part of the invention is designed especially
for controlling the operation of such printing devices to suit the speed of move-
ment of the paper and for timing their operation so that the impressions may be
made at the proper intervals.
This invention also embraces improvements in the stripping devices for removing
the partially formed tube section from the bottom forming devices; whereby a
more positive and certain action of the gripper of the stripping cylinder is obtained.
Referring to the accompanying drawings:
Fig. 1 is a side elevation of a paper bag machine embodying this invention;
Fig. 2 and Fig. 2 is a plan view of the same on a larger scale than Fig. 1;
Fig. 3 and Fig. 3 is a longitudinal vertical sectional view of the same on the
line of Fig. 2, Fig. 2;
Fig. 3 is a sectional view similar to Fig. 3 of a part of the mechanism showing
the tucker plate in a different position;
Fig. 4 is a transverse vertical sectional view on the line y-y of Fig. 1 looking
to the right;
Fig. 5 is a plan view enlarged of the tube section carrier and bottom former;
Fig. 6 is a front view of the same with the suction formers opened;
J
Fig. 7 is a transverse sectional view of one of the formers on the line - of
Fig. 6;
Fig. S is a side elevation of the tube section carrier and bottom former;:
Fig. 9 is a longitudinal vertical sectional view of the same on the line ww of
Fig. 5;
Fig. 10 is a front elevation enlarged of part of the final folding devices;
Fig. 11 is a vertical, sectional view of the same on the line
of Fig. 10;
Fig. 12 is a detail plan view of a part of the devices for operating the folding
plates;
Fig. 13 is a cross sectional view of the same on the line uu of Fig. 12;
Fig. 14 is a plan view enlarged of the stationary guide plate and the movable
base of the reciprocating carrier;
Fig. 15 is a transverse vertical sectional view of the same on the line t-t of
Fig. 14;
Fig. 16 is a sectional diagram of the final folding and pasting cylinders;
Fig. 17 (Sheet 5) is a plan view, enlarged, of the printing devices;
Figs. 18 and 19 are longitudinal sectional views of the suction formers showing
different positions assumed by the sections in the formation of the bag bottoms;
Figs. 20 and 21 are transverse sectional views of the tube forming devices
respectively on the lines r―r and s―s of Fig. 2^;
Figs. 22, 23, 24, 25, 26, 27 and 28 are perspective views of the tube section
illustrating the different steps in the formation of the bag bottom;
Fig. 29 (Sheet 7) is an horizontal sectional view of a part of the bottom formers
showing the air passageway therein;
Figs. 30, 31, 32, 33, 34, and 35 are perspective views of detached portions of
the bottom formers;
Fig. 36 is an end view enlarged of the stripping cylinder; and
Fig. 37 is a longitudinal sectional view of part of the same on the line p―p
of Fig. 36;
Fig. 38 is an enlarged plan view of the bottom forming devices;

page_text: Fig. 39 is a longitudinal vertical section in the line ¹¹ of Fig. 38; and
Figs. 40 to 44 are detail perspective views of portions of the end folding wings
and mechanism for operating them.
The body of the machine is composed of suitable side frames 1-1, by which the
various operative parts are carried. The final folding and pasting devices are
carried in brackets 2-2 at the front of the machine.
Power is distributed to the various operative parts of the machine through
suitable gearing and power transmitting connections from a power shaft 3
journalled in the frames 1-1.
The paper
in a continuous web is taken from the roll 4, mounted in the rear of
the machine, and is carried forward about suitable guides, pasted longitudinally
and folded into a bellows-side fold tube. It is then cut into sections, which are
taken by the reciprocating carrier, and the bottom folds are formed by the
movable suction formers thereof; these tube sections with the bottoms thus
partially formed are then delivered to the final folding and pasting devices by
which the final folding and pasting operations are performed, and the finished
bags are discharged from the machine.
THE TUBE FORMING DEVICES: (See Figs. 1, 24, 34, 20 and 21).
The roll of paper 4 is carried on a shaft 5 supported in brackets 6 in the rear
of the machine. It passes thence in a continuous web over a guide 7 extending
transversely between the frames 1-1, and upon a guide 8 in the rear of the
machine, adjacent to which is located the paste wheel 9, by which paste is applied
in the usual manner to one of the edges of the web as the paper passes over the
guide 8.
From the guide 8 the paper passes under the forming plate 10, which is carried
by a frame 11 supported by a pendant 12 from a bracket 12b carried by one of the
side frames 1, and forms an upwardly inclined extension from the rear of the base
plate 14. This plate or extension 10 has outwardly inclined edges 13, 13, by which
the sides of the web are bent upwardly in commencing the formation of the tube
(see Fig. 20). The lower face of the frame 11 carries a base plate 14 inclining
upwardly from the base of the plate or extension 10, and forming therewith an
angle 15. Under this plate 14 and its extension 10 the paper of the web passes
while its edges are being folded down and the bellows folds are being formed in the
sides.
16 is the top plate carried by the frame 11 and extending forward between the
feeding rolls 25, 26, one of which is suitably reduced as at 25 to admit it. 17 is
a folding finger carried by the arm 12" and extending forward with an inwardly
inclined edge over the plate 16 from the end thereof on one side. 18 is a folding
finger carried by the arm 12", on the opposite side, and extending rearwardly with
an inclined edge over the plate 16 from the end thereof.
19, 19, are fingers, shown as extensions of the fingers 17, 18, projecting rear-
wardly beyond the end of the plate 16 and inclining outwardly. 20 is a finger
carried by the plate 16 and projecting from its opposite side over the finger 17.
21, 21, are plates carried by the bracket 12 or pendant 12" and extending
forward longitudinally one on each side under the plate 16, with their edges
inclining forwardly from the rear. 22 are guides, one on each side depending
from the fingers 17 and 18 and located at the sides between the plates 14 and 16
and adjacent to the extension 10.
As the web of paper passes under the plate 10 its two sides are bent up by the
inchned edges 13, 13, thereof, and downward inclination of the plate together with
the inward inclination of the edges 13, 13 acting to turn up the side edges. This
action is also assisted by the fingers 19, 19, which act upon the outside of the paper
and serve to hold it in contact with the edges 13, 13 of the plate 10. The outward
inclination of these edges 13, 13 acts to gradually narrow the lower ply of the
paper until it reaches the base plate 14, where its upturned sides pass under the

page_text: guides 22, 22 and the side edges at the top pass under the fingers 17 and 18 (see
Fig. 21). By these means an even tension is obtained upon the paper throughout,
and the liability of the paper to wrinkle or be torn is avoided. The sides of the
paper are acted upon by the plates 21, 21, and, being wide at the rear where they
pass the angle 15, are gradually creased inwardly to form the bellows-side folds.
The finger 17 folds the edge upon which it acts down upon the plate 16, while the
finger 20 acts upon the opposite pasted edge and folds it over.
The bellows tube thus formed envelopes the plate 16, and as it travels forward
to the rolls 25, 26, its upper face is acted upon by the rollers 23, 23, which serve
to draw the paper tightly about the upper plate. The rollers 23, 23, are shown
set at an angle and carried by a weighted lever 24 supported by a pedestal 27.
The fingers 19, 19, may be omitted, or used on one side only; and while the
fingers 22, 22 are desirable in assisting in flattening down the sides and guiding
the paper they may be omitted, without materially affecting the operation of the
tube former.
37 is a plate arranged over the forward end of the plate 16 immediately in the
rear of the rolls 25, 26, between which and the plate 16 the upper ply of the paper
tube passes. This plate serves to keep the paper flat and to prevent creasing and
also to press the pasted edges together. This plate is shown provided with side
flanges 38, extending downward on each side of the plate 16 and held against
forward movement by the rod 39.
In the construction shown the pedestal 27 for the pressure roll lever 24 is carried
by this plate 37, and the plate is provided with slots 40, 40, to admit the slitters 28.
41 is a pressure plate located below the plate 14, between which and the plate 14
the lower ply of the paper tube passes. This plate is shown hinged to the end of
a lever 42 carried on the rod 39, and an arm 43 carried thereby and connected by
a spring 44 with a stationary portion of the machine holds the plate 41 in contact
with the lower ply of the paper tube as it passes over the plate 14. The plate 41
acts to hold the paper tube flat and to prevent creasing.
THE SLITTERS AND MEANS FOR CONTROLLING THEM: (Figs. 2 and 3*).
28 are the slitters for cutting the short longitudinal slits in the paper tube,
to form the tabs on the ends of the tube sections when the tube is severed. As these
slitters must operate to make the slits exactly at the lines upon which the tube is
severed into bag lengths, it is desirable that their time of action should be varied
with any change in the length of the bag sections to make the slits at greater
intervals apart. It is also desirable to prevent any irregularity in cutting or
variation in the length of the slits that their speed of operation should be uniform
with the speed of movement of the paper.
To control the intervals of the action of the slitters means are employed for
interrupting their operation; and to enable their speed of operation to be main-
tained uniform with the speed of movement of the paper, their speed is controlled
through power transmitting connections with the tube feeding or drawing-in.
devices, so that whatever may be the speed of movement of the paper the slitters
will operate uniformly therewith, while their intervals of action may be varied
to suit the length of the bag sections to be formed.
The slitters 28 are carried on a shaft 29 journalled behind the rolls 25, 26 in
suitable bearings on the side frames 1, 1 and driven through a gear wheel 30
carried thereby, which engages a gear wheel 31 loose on a counter shaft 32, and
controlled by the tube feeding or drawing-in devices, receiving power from the
gear wheel 212 on the shaft of the lower drawing-in roller 26 through an inter-
mediate gear 211. The devices shown for interrupting the action of the slitters 28
are as follows;
The gear wheel 30 is connected with the shaft 29, or with the sleeve 33 thereon
which carries the slitters, by a yielding connection, through a spring 34, and a
finger 35 carried by the shaft is acted upon by a segment 36 on the counter shaft 32,
.:

page_text: which, during the interval of its contact with the finger 35, prevents the rotation
of the shaft 29 and slitters 28, putting the spring 34 under tension, which, the
instant the segment 36 releases the finger 35, restores the driving connection
between the shaft 29 and slitters 28. The gear wheel 30 continues the rotation
of the shaft 29 until its movement is again arrested by the action of the segment 36
on the finger 35.
To regulate the action of the segment 36 to govern the operation of the
slitters 28, 28 and release them at the proper moment with relation to the move-
ment of the paper, it may be adjusted circumferentially on the shaft 32.
When the speed of the drawing-in rollers 25, 26 is accelerated or retarded, to
increase or decrease the speed of movement of the gear 30 and slitters 28 will be
correspondingly increased or decreased through the gearing 212, 211 and 31, and
time of rest or interval of interruption will be correspondingly increased or
diminished.
THE TUBE FEEDING AND CUTTING DEVICES: (Figs. 2, 24, 3 and 4).
25, 26 are the drawing-in rollers between which the paper tube passes and by
which it is fed to the cutters by which it is cut into bag sections. The plate 16
passes between the rollers 25, 26, and is formed at this point with a narrow
section 16", so that the rollers may act directly upon the sides of the paper. These
rollers 25, 26, are the feed rollers by which the paper is drawn from the roll 4
and carried through the tube former; they are journalled in suitable bearings on
the side frames 1, 1, and the upper roller 25 is shown journalled in eccentrics by
which it may be raised out of contact with the lower roller 26, thus stopping the
feeding of the paper.
The roller 25 is geared with the shaft 47 of the roller 26 by gears 48, 49 and is
driven therefrom.
The outer end of the plate 16 beyond the rollers 25, 26 is provided with the usual
serrated edge 59, and a second stationary cutter 70 carried by a bar 71 is located
immediately above it. The bar 71 is shown pivoted to a bracket on the frame as
at 72 and its free end engages a notch 73 on the opposite side and is locked in place
by a pivoted dog 74 (Fig. 4).
45 is a rocking reciprocating cutter bar, which, in its cutting action, is projected
across the path of the paper tube and rocked past the stationary cutters, and on
its return movement is retracted and rocked back out of the path of the paper.
The rocking movements are obtained by a crank operatively connected with the
rear end of the bar, and the reciprocations are imparted by a rocking slide on
which the bar moves longitudinally when rocked. In the particular construction
shown, the cutter bar 45 is pivoted, or otherwise operatively connected, at its
rear end with a crank 75 of a shaft 76 journalled in a bracket 77 carried by the
side frame 1, and its rear portion is provided with a longitudinal slot 78, which
receives a slide 79 pivoted on a stud 80 on the bracket 77. As the crank 75 turns,
the cutter bar is rocked, and, at the same time, is reciprocated on the slide 79.
Considering the bar in the position shown in Fig. 4, the forward movement of the
crank reciprocates the bar forward on the slide 79, until its end extends below the
stationary cutters 59, 70. In this position the slide 79 is at the rear end of the
slot 78, and the downward movement of the crank 75 rocks the bar on the stud 80
as a fulcrum, causing it to ascend with a quick movement across the face of the
cutters 59, 70 and sever the paper tube. The continued forward and upper move-
ment of the crank 75 retracts the bar 45 on the slide 79 until its end is moved
bevond the line of the cutters and the further upward and forward movement of
the crank then rocks the bar downward on the stud 80 as a fulcrum until it again
reaches the position shown in Fig. 4.
By these means the movements of the bar 45 are confined within the planes
bounding the sides of the machine, and the swinging of the bar in an arc outside
of the machine, which requires lateral space and is dangerous, is avoided.

page_text: The crank-shaft 76 may be operated from a counter-shaft 81, by worm
gears 250, 251, carried by the crank shaft and counter-shaft respectively.
'
82, 83 are feeding rollers, carried on shafts 84, 85, respectively and located in
front of the cutters, which receive the cut bag lengths and feed them forward to
the bottom formers. The shafts of these feed rollers are geared together by
gears 86, 87.
88 is a guide plate extending from the rear of the feed rollers 82, 83, and
between them forward to the point of delivery to the clamp frame of the carrier;
the peripheries of the feed rolls are suitably recessed to permit the passage of
the guide plate between them. The tube sections, cut off by the action of the
bar 45, are fed forward by the rollers 82, 83, over the plate 88, the rear end of
which 89 may be bent downward to guide the forward ends of the paper tubes
and prevent them from catching thereon.
89, 89 are feed rolls located near the front end of the guide plate 88, and running
in contact with lower feed rolls 90, 90, to receive the tube sections from the feed
rolls 82, 83 and deliver them to the clamp frame of the bottom formers. The
feed rolls 89 are shown above the plate 88 and the rolls 90 below it, the plate
being provided with slots 91 through which the rolls make contact.
Either or
both of the sets of feed rolls 89 and 90 may be provided with facing of more or
less adhesive material, such as rubber. In the drawings the upper feed rolls 89
are shown provided with rubber peripheries 92.
The shaft 93 of the lower rolls 90 is shown driven by a gear wheel 94; and the
shaft of the upper rolls 89 is shown driven therefrom by gears 252.
THE BOTTOM FORMERS: (Figs. 1, 2, 3, 5, 6, 7, 8, 9, 18, 19 and 30 to 35 and 38 to 44).
This portion of my invention relates to improvements upon the bottom forming
devices for forming satchel square bottoms upon bellows-side-fold tubes described
in Letters Patent to Purvis and Hays 19,372 of A.D. 1893.
In
In that patent is described bottom forming devices employing a reciprocating
carriage carrying suction formers composed of hollow sections, which, during their
reciprocations, are moved apart and changed in the angular relations of their
sections to break down the end of the paper tube into the desired folds.
connection therewith side folding fingers are used, adapted at certain intervals
to move over the perforated faces of the suction formers to assist the suction thereof
in properly shaping the bellows-side-folds. As shown in that patent the suction
is created in the hollow sections of the formers through flexible tubes connected
with them. The tube sections are fed to the carriage and are clamped thereby,
with the ends projecting between the suction formers, while the bottoms are being
folded, and are then released and stripped off.
A portion of these improvements relate to the employment of a clamping device
on the carriage, controlled by a frictional resistance produced by the movement
of the carriage, to close the clamp during the forward reciprocation of the carriage,
while the bottom is being formed, and to automatically open or release at the
proper moment.
For this purpose a movable clamp is employed upon the carriage operated by
a controller slide or shoe upon a guide, which imposes a frictional resistance to
the controller, and operates the clamp while the carriage is reciprocating.
50 is the reciprocating carriage, guided in guides 52 of a bed frame 51 carried
by the side frames 1, 1. 53 is a pedestal carried by the carriage 50 and carrying
the suction formers 60, 61. The carriage 50 is reciprocated by a lever 54, hinged
to the carriage, as at 55, and operated Through a link 56 from a crank 57 on the
shaft 58.
95 is a transverse plate carried by the pedestal 53 (or plates 62, 62 carried
thereby) and projecting forward therefrom, at a slight distance above the upper
edge of the pedestal to permit the tube sections to pass between. The rear faces

page_text: of plate 95 and pedestal may be inclined or bevelled as shown to. guide the forward
edge of the tube section between them..
96 is a clamp extending transversely below the projecting edge of the plate 95
and separated a distance therefrom to permit the tube section to pass between;
its front edge is immediately adjacent to the edge of the plate 95. This clamp 96
is pivoted at its rear, as at 100, to the plate 95, and is provided with a controller
or arm 97 which runs on a longitudinal rod 99 extending rearwardly. from a
bracket 101 in the front of the machine.
The movement of this slide 98 on the rod 99, when the carriage 53 is moved
forward, produces a frictional resistance, which acts to rock the clamp 96 on its
pivot 100 and to clamp its edge with the edge of the plate 95. The instant the
backward movement of the carriage 53 begins this frictional resistance acts in the
opposite direction, and opens the clamp 96. Thus while the carriage 53 is moving
forward the edges of the plate 95, and clamp 96, are clamped together, but at the
moment when the carriage 53 starts to move back they are unclamped.
The controller or arm 97 is shown provided with a shoe 98 running upon the
bar 99. In the drawings this shoe is shown consisting of a longitudinally divided
tubular sleevé embracing the bar 99, with one half carried by the arm 97 and the
other half connected therewith by pins 102, with springs 103 interposed between
the pins and the sleeve section, thus uniting the sections of the sleeve 98 by a
yielding connection.
The
The bottom formers 60, 61 are carried by the pedestal 53, and consist of suction
formers, having perforated faces adapted to move apart as the carriage reciprocates
and to break down the end of the paper tube, which adheres to their suction faces,
into the desired folds. 62, 62" are cheek plates or extensions carried by the
pedestal 53, one on each side, to which the movable suction formers are hinged.
Instead of using formers composed of independent sections hinged together as
in the patent referred to, collapsing sections are employed, so constructed, that,
as the sections vary their angular relations, one section will collapse upon the
other at the back, each section being moved on a transverse axis at its rear.
suction former 60 is hinged to the plate 62 at one end on a pivot 104, and in the
construction shown, consists of two hollow boxes or sections 63, 64, of which the
outer box or section 64 fits within the side plates 136, 136 of the section 63 (see
Fig. 7) and is hinged to the end frame 65 through an arm 66 connected with the
frame 65 by a pivot 67. The sections 63, 64 are provided with perforated suction
faces 68, 69, and the back 105 of the inner section 63 is curved and fits over the
curved back 106 of the section 64, so that either section may move with reference
to the other on its respective pivot 104 or 67. The lower suction former, 61 is
identical in construction and arrangement with the suction former 60, consisting
of an inner section 63" having a perforated face 68" and pivoted at 104" to the
opposite side cheek 62, and an outer section 64, having a perforated face 69" and
hinged at 67 through an arm 66 to the end frame 65" of the section 63ª, the
curved back 105 of the section 63" fitting over the curved back 106 of the
section 64 and permitting the two sections to move with respect to one another
on their respective pivots or axes.
To avoid the use of means for independently creating a suction in each section,
the sections 63, 64 and 63, 64" respectively communicate with one another, so
that it is necessary to connect the suction creating devices with one section only.
In the construction shown this is readily permitted by the feature of the
collapsibility of the sections at the back, the rear of the front sections 64, 64"
opening into the front of the rear sections 63, 63. Other means may however be
employed for establishing this communication without using the collapsible
sections.
i
As the carriage 50 reciprocates the formers 60, 61 are moved apart, and the
angular relations of their sections are varied. Suitable mechanism anay, be
***
"
'

page_text: employed for this purpose, such e.g, as is shown in the Patent of Purvis and Hays,
19,372 of 1893 referred to.
A special form of mechanism is shown for operating the sections which shall
now be described;
107 is a gear wheel on the pivot 104 of the end frame 65 of the section 63.
108 is a gear wheel carried on a stud 109 journalled in the side cheek 62 and
carrying an arm 110 on the end of which is a roller 111. 112 is a gear wheel
carried by the pivot 67 of the arm 66 of the outer section 64, and 113 is an inter-
mediate gear on the frame 65 between the gears 107 and 112. 114 is a roller on
an arm 115 carried by the end frame 65 of the section 63.
Similar devices are employed at the opposite side for operating the sections 63",
64, 107 is the gear wheel on the pivot 104"; 108 is the gear wheel carried by
a stud 109 journalled in the side cheek 62, and carries the arm 110" provided on
its end with the roller 111"; 112ª is the gear wheel carried by the pivot 67" of the
arm 66* of the section 64; 113ª is the intermediate gear between the gears 107"
and 112, and 115ª is the arm on the end frame 65" which carries the roller 114".
116, 116 are cams (shown as cam slots) on which the rollers 111 and 114,
and 111 and 114" respectively run, and by which the formers 60, 61 are moved
apart and the angular relations of their sections are varied. As shown these cam
slots are formed in plates 117, 117" located one on each side of the machine. The
cam slot 116 which operates the upper former 60 has a lower portion 118, an upper
portion 119, and an intermediate upwardly inclined connecting portion 120
(see Fig. 1) while the cam slot 116" which operates the lower former 61 is oppositely
arranged having an upper portion 118, a lower portion 119" and an intermediate
downwardly inclined connecting portion 120 (see Fig. 3).
the
When the carrier 50 is in its rearmost position, as shown in Fig. 3, the rollers 111
and 111 are in the rear ends of the slot portions 118, 118, and the rollers 114, 114"
are in the front ends thereof adjacent to the inclined portions 120, 120". As the
carrier 50 moves forward the rollers 114, 114° move in the inclined
portions 120, 120%, and rock the inner sections 63, 63 on their pivots 104, 104",
through approximately 90°, or until they are brought into substantially a vertical
plane with reference to one another, as shown in Fig. 19. During this portion
of the movement of the carrier 50, the angular position of the outer sections 64, 64"
is not changed, as the rollers 111, 111, which operate them, are travelling over
the horizontal portions 118, 118" of the cams. At this moment therefore the
sections 64, 64 occupy a substantially rectangular position with reference to the
sections 63, 63 as shown in Fig. 19; but as the carrier 50 continues in its forward
movement the rollers 114, 114" move forward over the cam portions 119, 119"
without affecting the angular positions of the sections 63, 63, while
rollers 111, 111", travel on the inclined portions 120, 120", and rock the outer
sections 64, 64 on their pivots 67, 67 through the gears 108, 107, 113 and 112
and 108, 107, 113" and 112, until they are opened out into a substantially
vertical position in the same plane with the sections 63, 63 as shown in Fig. 6.
On the return of the carrier 50 these motions are reversed. In Fig. 18 the sections
are shown in an intermediate position before the inner sections 63, 63 are moved
fully open. The tube section, which is fed to the carrier in the condition shown
in Fig. 22 with its end lying between the suction formers, is first brought into
the partially opened position shown in Fig. 23, when the formers assume the
positions shown in Fig. 18; is then brought into the condition shown in Fig. 23,
when the formers are in the position shown in Fig. 19, and is finally flattened out
into the condition shown in Fig. 25, when the sections are fully opened as shown
in Fig. 6.
It will be observed that a single cam 116 or 116ª operates both sections of its
corresponding former, rocking each section independently on its axis, and that
certain and positive movements are imparted. In the construction shown the
movement is imparted directly to the inner section through the arm 115 (115"),

page_text: while the movement is imparted to the outer section by the rocking arm 110 (110")
through the intermediate gearing. The use of a single cam for each former instead
of two cams affords a simpler and more efficient construction.
To avoid the use of flexible tubes communicating with the formers 60, 61 as in
o the patent referred to, suction is created through passageways in the frame work
communicating with the formers through their journals 104, 104".
121 is a tube or passageway leading from the fan, or suction creating device
(not shown), and opening through the base plate 51 into a chamber 122 therein
(see Fig. 15) which communicates through a guideway 52 with a longitudinal
slot 123 in the base of the reciprocating carrier 50, whereby communication between
the base of the carrier and the suction passageway 121 is maintained.
The base 50 is hollow and communicates with the interior 125 of the hollow
pedestal 53, which through side openings 126, 120, communicates with passage-
ways 127, 127 through the extensions or side cheeks 62, 62", leading through the
journals 104, 104 to the interior of the formers 60, 61 (see Fig. 29 and dotted
lines in Fig. 5).
To control the suction in the formers and positively interrupt it to release the
tube section at the proper moment a valve or damper 246 in the flue 121 may be
employed. This is shown operated by a lever 247 connected at one end with the
valve or damper by a link 248, and at the other end with the crank 57 by a link 249
(see Figs. 1 and 4).
To assist the suction in breaking the paper into the square box shape shown in
Fig. 24 and to aid in the formation of the usual diamond side folds, former fingers
have been used projected into the diamond folds while the bottom is being formed.
To ensure the positive projection and retraction of these fingers at the proper
intervals and to simplify their operation the fingers are arranged movably upon
one of the sections of the former and means are employed carried by the other
section for operating them.
As shown these devices are as follows;
137, 137 and 137, 137" are the folder fingers located one on each side of each
section 63, 63 and adapted at a certain moment to be projected forward over the
paper into the diamond side folds forming therein. The fingers 137, 137 are each.
carried by a slide 138 guided longitudinally in the top 105 of the section 63 and
the fingers 137", 137" are similarly carried each by a slide 138" guided longitu-
dinally in the top 105* of the section 63. l'ins or lugs 139, 139 on these slides 138
engage cam slots or grooves 140, 140 in an arm 141 carried by the outer section 64;
and similar pins or lugs 139", 139" on the slides 138 engage similar cam slots
or grooves in an arm 141ª carried by the section 64".
As the inner sections 63, 63 are rocked on their pivots 104, 104ª, their
tops 105, 105 are moved under the arms 141, 141 of the sections 64, 64", and the
cam slots 140, 140 act upon the lugs or projections 139, 139" and draw the
slides 138, 138 inward, thus moving the fingers inwardly over the paper upon the
faces of the suction formers at the time the inner sections 64, 64" are moving
upwardly to break the bottom of the bag into the square box shape and form
the diamond side folds.
Upon the upward movement of the sections 64, 64" upon their pivots 67, 67th the
cam slots 140, 140" act upon the pins 139, 139 in the opposite direction and thus
retract the fingers 137, 137".
128, 128ª are plates arranged transversely to the planes of the faces of the former
sections, one on each side, and are adapted when the former sections assume the
rectangular position which breaks the bottom of the bag section into the square
box shape, to occupy positions immediately adjacent to the opened slides of the
formers, and to be projected forward so as to press slightly upon the sides of the
paper, and thus ensure the formation of the square box folds.
In the construction shown the plates 128, 128" are carried on the ends of short
rods 129, 129 carried in suitable guides in frames 130, 130", on the side

page_text: checks 65, 65" of the former sections 63, 63", and are normally retracted by
springs 131, 131*. 132, 132 are arms carried by the rods 129, 129" (shown pro-
jecting laterally through longitudinal slots 133, 133ª in the guides) and provided
on their ends with rollers 134, 134 adapted to be acted upon by cams 135, 135"
(Fig. 2) when the carrier 50 reciprocates.
The operation of these devices is as follows:
When on the forward movement of the carriage 50, the sections 63, 63ª are
rocked on their pivots 104, 104" by the action of the cams 120, 120° on the
roller 114, 114", as heretofore described, the frames 130, 130, and the
plates 128, 128 which they carry, are moved with them so as to occupy a position
immediately adjacent to and in advance of the faces 6S, 68" of the sections 63, 63ª
as shown in Fig. 6, the frame 130 and its plate 128 moving upward and the
frame 130 and its plate 128" moving downward. At this moment the outer
sections 64, 64" occupy a position substantially at right angles to the sections 63, 63"
and the paper which adheres to their perforated faces is opened out into a square
box shape and the rollers 134, 134" are acted upon by the cams 135, 135 and the
plates are projected inward to a slight extent into the side openings between the
former sections. These plates press upon the sides of the paper and act to
straighten it out and more perfectly break it into the square box shape.
When the formers reach the end of their forward reciprocation with the sections
thereof opened up as shown in Fig. 6 and the bottom of the tube folded as shown
in Fig. 25 flattening plates are folded down upon the opened faces of the formers
to flatten out the bottom of the bag. These plates may be operated in any
convenient manner.
As shown these devices are as follows;
(Figs. 2 and 3 and 38-44.)
142, 142 are plates hinged on vertical axes to arms 143 on rods 144, 144, guided
in a transverse frame 145 in the front of the machine, and connected at the rear
with a bar 146 operated by arms 147, 147 of a rock-shaft 148 journalled in the
brackets 101. 149 is a rod hinged to one of the arms 147 and extending rear-
wardly over the suction formers and guided at the rear in a guide 184. 185 is
a stop (shown adjustable) carried by the rod 149 adjacent to the rear thereof.
186 is a guide or jaw carried by the frame 65" of the suction former 60 engaging
the rod 149 and adapted at the end of the backward movement of the former 60
to strike the stop 185 and impart a slight backward movement to the rod 149,
thus rocking the shaft 148 and projecting the rods 144, 144.
191 is a yielding frame having an extension 187 guided in the frame 145 and
provided with arms 188, acting as yielding bearings for the plates 142, 142 adjacent
to their hinge points. 189 is a spring normally pressing the frame 186 forward
and permitting it to yield. 190, 190 are springs normally retracting the plates 4
and maintaining them in contact with the arms 188, 188 as shown in Fig. 2.
At the end of the forward movement of the formers 60, 61 (which are then
opened as shown in Fig. 6) they strike the outer edges of the plates 142, 142 and
press the yielding rods 144 back, rocking the plates 142, 142 upon their hinges about
the arms 188 as fulcra, and folding the plates down with a positive action upon 4
the opened paper drawn out into the position shown in Fig. 25 by the opened
sections of the suction formers. As the formers move forward pressing against
the plates the frame 191 yields, so that a certain and positive pressure of the folding
plates 142, 142 is obtained upon the opened end of the paper tube, and the folds,
produced by the opening of the former sections are perfectly formed and defined. 5
This backward movement of the rods 144, 144, moves the rod 149 rearwardly, so
that, on the return movement of the carriage, the projection or jaw 186 thereon
will strike the stop 185 and restore the rods 144, 144 and plates 142, 142 to normal
position as shown in Fig. 1, the yielding frame 191 returning under the action
of the spring 189.
At the end of the forward movement of the formers the paper tube is in the
5

page_text: condition shown in Fig. 25, and as the carriage starts to move back, the clamp is
released and the partially folded bag is removed by the usual stripping devices
(not shown) and reaches the final folding and pasting devices in the condition
shown in Fig. 26, when the paste is applied and the final folds are formed in the
manner well known.
THE FINAL FOLDING AND PASTING DEVICES: (Figs. 3, 3º, 10, 13 and 16).
The stripping cylinder 150 is located immediately in front of the reciprocating
formers 60. 61, in position to receive the bag section therefrom when the formers
reach the limit of their forward movement, and is provided with a gripper 151.
operated by a cam 152, to seize the flap on the lower portion of the bottom and
remove the bag section from the formers.
To ensure a positive certain and elastic gripping action in the gripper 151 a
vielding connection between the gripper, or gripper shaft, and the part actuated by
the cam 152. This construction is particularly shown in Figs. 36 and 37. The
gripper 151 is secured to a shaft 252 iournalled longitudinally in the cylinder 150.
253 is the arm which is rocked by the cam 152 and carries the usual roller 254.
This arm is vieldingly connected with the gripper shaft 252 by a strong spring 255
through which the gripper shaft and gripper are actuated when the arm is moved
by the cam, but which permits the arm to move independently of the gripper
shaft, after the gripper is clamped upon the paper. In the particular construction
shown the arm 253 is carried by a short sleeve 256 encircling the shaft 252, and
connected by a coiled spring 255 with an enlargement 257 on the gripper shaft.
By these means the difficulty of properly shaping and adjusting the cam to ensure
a certain gripping action is entirely avoided, and the cam is made of a size sufficient
to impart slightly more movement to the arm than is necessary to close the gripper.
As the grinner is actuated through the spring it acts elastically upon the paper
without liability of injuring it.
153 is a feed roller located below the stripping roller 150 and running in
contact with the periphery thereof, between which and the roller 150 the bag
section is fed.
154 is a pasting roller provided with the usual pasting form, which receives
naste from the usual rollers 155, 156 and applies it to the bag bottom. 157 is the
usual roller running in contact with the pasting roller. between which and the
pasting roller the bag passes while the paste is being applied to its bottom. 158 is
an intermediate guiding roller between the rollers 153 and 157 over which the bag
section is guided when released by the gripper 151. 159, 160 are the first pair
of rollers over which the bag passes when delivered from the pasting rollers 154. 157,
and between which it passes when the first final fold is formed. 161, 162 is the
second pair of rollers over which the bag passes when delivered by the
rollers 159. 160 and between which it passes when the second final fold is formed.
163 is the guide plate extending over the roller 160 for guiding the end of
the bag section to permit the first final fold to be formed and 164 is the guide
plate projecting over the roller 162 for guiding the end of the bag section to
permit the second final fold to be formed. 165 and 166 are respectively the
reciprocating tuckers or plates adapted to reciprocate respectively between the
rollers 159, 160 and 161, 162 to form the final folds.
The bag section when delivered from the formers is carried bottom foremost
between the rollers 150, 153, being flattened thereby into the condition shown in
Fig. 26. and passes over the roller 158, between the rollers 154. 157 where paste
is applied to its bottom in the usual manner. Thence it passes over the
rollers 159. 160 under the tucker plate 165 (which is then in the position shown in
Fig. 3) with its forward end resting on the plate 163. The plate 165 descends
forming the first final fold as shown in Fig. 27 and directing the bag section
between the rollers 159, 160, whence it descends under the tucker plate 166 (which
is then in the position shown in Fig. 3) with its front end under the plate 164,

page_text: which permits the first fold from reopening. The tucker plate 166 then rocks
acting upon the unfolded end and folding it up upon the bottom as indicated in
Fig. 28 and directing the bag section between the rollers 161, 162 from which the
completed bag is discharged.
The following is a description of the apparatus for operating the tucker
plates 165, 166 which is illustrated particularly in Figs. 10, 11, 12, 13 and 16.
167, 167 are arms journalled on the shaft 169 of the roller 159 carrying a cross
bar 168 to which the tucker plate 165 is secured. 170, 170; are projections of the
arms 167, 167 forming stops against the shaft 171 of the roller 160 to limit the
descent when the plate is lowered to act on the bag bottom. 172 is a movable
trip shown as a transversely movable slide carried by the roller 159 and adapted
to project at either end beyond the periphery thereof. This slide is provided
on its end with lateral lugs or projections 173, 174 projecting from the face thereof.
175 is a cam on the shaft 171 provided with a high projection 176 and a low
projection 177, adapted to operate on the ends of the trip 172 and actuate it.
179 is a lug or lateral projection carried by one of the arms 167 and adapted
to be actuated by the lugs 173, 174 of the trip 172.
The plate 166 is similarly carried by arms 167, 167 journalled on the shaft 180
of the roller 161, and carrying a cross bar 168 by which the plate 166 is carried.
170, 170 are stop projections of the arms 167, 167", adapted to be arrested by
the shaft 181 of the roller 162 when the plate 166 is lowered. 172ª is the trip on
the roller 161 having the laterally projecting lugs 173ª, 174ª on its ends. 175° is
the cam on the shaft 181 having the high projection 176" and the low projec-
tion 177, and 179ª is the lug or projection carried by one of the arms 167* adjacent
to the slide 172ª.
182 is a segmental gear carried by the journal of the arms 167 on the shaft 169
of the roller 159 adapted to engage a similar gear 183 carried by the journal of
the arms 167" on the shaft 180 of the roller 161.
These gears 182 and 183 are so arranged that when one of the plates 165, 166
is elevated the other is lowered, and vice versa. In the position shown in Figs. 10
and 11 the plate 165 is lowered and the plate 166 is raised. Considering the
mechanism to occupy the positions shown in these figures the operation is as
follows;
The high part 176" of the cam 175" is immediately adjacent to the end of the
trip 172, and as the rollers 161, 162 rotate it will strike the end of the trip 172
and force it inward projecting the opposite end outward to the full extent, and
when upon the rotation of the roller 161 this end of the trip reaches the projec-
tion 179 of the rocking frame 167, its lug 173" will act thereon to depress it,
thus rocking the plate 166 and causing it to act upon the bag bottom and crease it
and direct the bag between the rollers 161, 162 as indicated in Fig. 28. This
movement of the rocking frame 167" will, through the segmental gears 182, 183,
rock the frames 167, 167 and elevate the plate 165 (as shown in Fig. 3). During
these movements there has been no operation of the trip 172 of the roller 159
because the slide occupied an intermediate position with either end fully projected.
Immediately after the operation of the projected trip 172" upon the frame 167 its
end is struck by the low projection 177 of the cam 175" thus restoring it to an
intermediate position. The high projection 176 of the cam 175 then strikes the
end of the trip 172 and projects its opposite end in a similar manner, so that as
the roller 159 rotates, the lug 173 on the projected end of the trip will strike the
projection 179 and depress the frames 167 and plate 166, and cause it to act upon
the bag to crease it and direct it between the rollers 159, 160, as shown in Fig. 27.
At the same time the frames 167° and the plate 166 are elevated by the action of
the segmental gears 182, 183. Immediately after the trip 172 has thus acted
upon the frame 167 it is struck by the low projection 178 and restored to inter-
mediate position. This intermittent operation of the trips 172, 172ª enables the

page_text: rollers 159, 160, and 161, 162 to make more than a single revolution between each
operation of the tucker plates, so that the rollers may conduct the folded bag
between them before the next folding operation takes place. It will be observed
that the tucker plates are oscillated on axes concentric with the rollers.
THE PRINTING DEVICES:
It is desirable in a machine of this character that devices should be employed
for printing upon the bags figures or symbols to indicate the size or capacity
thereof. For this purpose a printing attachment is employed for printing the
desired impression on each bag section.
As these printing devices should operate to make impressions at exactly the
same position on each bag, it is desirable that their time of action should be varied
with any change in the length of the bag sections to make the impressions at
greater or less intervals apart. It is also desirable to prevent blurring of the
impressions that their speed of operation should be uniform with the speed of
movement of the paper. For these purposes means are employed for interrupting
the operation of the printing devices, and control their speed of operation through
power transmitting connections with the tube feeding or drawing-in devices, so
that whatever may be the speed of movement of the paper the printing devices
will operate uniformly therewith, while their intervals of action may be varied
to suit the length of the bag sections. These devices are particularly shown
in Figs. 1, 3 and 17. 178 is a type cylinder arranged immediately adjacent to
the guide roller 7, over which the paper passes as it travels to the tube former,
and which acts as an impression roller. The type cylinder may be provided with
a removable type plate to provide for printing for different sizes of bags.
192 is an inking roller for supplying ink from a fountain 193 to the type
cylinder 178. Power is imparted to the inking cylinder and type cylinder from
a gear 194 through gears 195, 196 on their respective shafts and an intermediate
gear 203.
The type cylinder is driven from a part of the machine which controls or is
controlled by the speed of movement of the paper, and operates uniformly there-
with. In the drawings it is shown driven from the drawing-in roller 26 through
power transmitting connections 239, 240, of which 239 is a chain transmitting
power from a sprocket wheel 241 on the shaft 47 to a sprocket wheel 242 on a
counter shaft 243, and 240 is a belt, transmitting power from a pulley 244 on the
shaft 243 to a pulley 245 on the shaft of the pinion 194, and it is apparent that
when the speed of the drawing-in rollers 25, 26 is accelerated or retarded to draw
in the paper faster or slower the speed of the printing cylinder will be correspond-
ingly increased or decreased.
To control the time of impressions independently of the speed of the printing
devices means are employed for interrupting the operation of the printing devices
at intervals. As shown these devices are as follows: The impression cylinder has
a yielding or frictional connection with its gear 196 through a spring 197, and a
stop 198 carried by the type cylinder is acted upon by a reciprocating rod 199
controlled by the driving devices of the machine, to interrupt the action of the
type cylinder at intervals of greater or less length according to the size of the bag
being made.
This rod 199 is carried by an eccentric 200 on the shaft 32 and its outer end
is guided in a guide 201 and arranged to be projected into the path of the stop 198
to temporarily arrest the type cylinder and control its operation.
THE DRIVING DEVICES:
Power may be distributed to the various operative parts of the machine in any
suitable manner. The devices which are shown are as follows:

page_text: counter shaft 58 (by which the former carriage 50 is reciprocated as has been
described) through a gear wheel 207 carried by said counter shaft.
208 is a pinion on the shaft 3, through which the counter shaft 81, which drives
the cutter-bar 45, is driven through gears 209, 210.
The counter-shaft 32, which carries the eccentric 200 and the cam 38 for con-
trolling the printing devices and slitters respectively, is driven through a gear 213
thereon from the gear 210.
Power is imparted to the drawing-in rollers 25, 26 from the shaft 32 by the gear
wheels 202 and 215 on the shafts 32 and 47 respectively and an intermediate
gear 204. By changing the gear 202 on the shaft 32, and adjusting the inter-
mediate gear 204 by the adjustable arm or lever 216 which carries it, the speed
of the drawing-in rollers 25 and 26 may be accelerated or retarded to decrease
the speed with which the paper travels.
The feed rollers 82, 83 are driven from the gear 215 through a gear 214 on the
shaft 85 of the roller 83 and an intermediate gear 217. The feed rollers 89 and 90
are driven from the gear 214 through the gear 94 on the shaft 93 and an inter-
mediate gear 218.
The final folding and pasting devices are driven from the shaft 58 through
a chain 219 and sprocket wheels 220 and 221 respectively on the shaft 58, and the
shaft 222 of the roller 158.
The gripping roller 150 and the pasting roller 154 are driven from the gear 223
on the shaft 222 through gears 224 and 225 on their respective shafts. The
rollers 153 and 157 are driven from the gears 224 and 225 respectively through
gears 236, and 237, on their respective shafts. The paste-feeding rolls are driven
from the gear 225 through gears 226, 227:
The rollers 159 and 160 are geared together by gears 231, 232, and are driven
by a gear 228 on the shaft of the roller 160 from the gear 223 through an inter-
mediate gear 230; the rollers 161, 162 are similarly geared together by
gears 233, 234, and are driven from the gear 230 through a gear 229 on the shaft
of the roller 161.
It will be thus seen that the machine embodies two systems of driving, the direct
system from the power shaft 3 which drives the striker-bar 45 the reciprocating
bottom formers, the final folding and pasting devices, and the shaft 32, with a
constant uniform movement, and the indirect or variable system controlled by the
change gear 202, which drives the drawing-in and tube feeding devices, the slitters
and the printing devices with a variable movement. This method of driving permits
the adjustment of the machine to the making of bags of different sizes. To make
such an adjustment, the cam plates 117, 117", which are adjustably secured to the
side frames 1-1, as by slotted arms and set screws 260, are loosened to permit
the arms 111, 114 to be disengaged from the slots in the plates 117, 117, the
pedestal 53 is detached from the carriage 50 and the end frame 145 with the
brackets 101 is detached from the plates 117, 117. The formers with the pedestal 53
and the frame 145 with the flattening plates 142, and the rods 99 and 149 are
removed, and corresponding parts of a different size are substituted for them,
the cam plates 117, 117 being suitably adjusted to receive them. The tube former
is detached from the pendant 12 which supports it, and removed together with its
folding fingers, and a new tube former of proper size is substituted. The gear 202
is changed to increase or decrease the speed of the paper to suit the longer or
shorter length of the tube sections to be formed, and the segment 36 and eccen-
tric 200 are adjusted on the shaft 32 to correspondingly regulate the timing of the
action of the slitters and printing devices.
While these proved tube forming devices, slitters, printing devices and final
folding and pasting devices have been shown combined with the reciprocating
suction formers, it is understood that they may be used with other bottom
forming devices, and that the improvements in the bottom forming devices may

page_text: e employed in combination with other forms of tube formers, slitters, printing
evices and final folding or pasting devices.
Having now particularly described and ascertained the nature of my said
nvention, as communicated to me by my foreign correspondents, and in what
anner the same is to be performed, I declare that what claim is;-
First; In the tube forming devices; -
a. The inclined extension of the plate, over which the paper is moved,
having outwardly inclined side edges.
b. The outwardly inclining guide finger or extension 19, located at the rear
of the tube forming devices on either or both sides.
c. The folders 17, or 18, when formed with a continuous forwardly inclining
folding edge.
d. The side guides 22 adjacent to the rear of the tube forming devices.
Second; In the devices for forming the slits in the paper tube;-
a. The rotary slitters having a relatively uniform speed with the paper,
when combined with means for interrupting the movement of the slitters
at intervals.
b. The devices shown and described for interrupting the movement of the
slitters.
c. The means for uniformly accelerating or retarding the speed of the tube
feeding devices. and slitters when combined with means for independently
interrupting the movement of the slitters.
Third In the printing devices:-
a. The rotary printer having a uniform speed with the paper, when com-
bined with means for interrupting the movement of the printer at intervals.
b. The devices for interrupting and controlling the operation of the printing
devices.
c. The means for uniformly accelerating or retarding the speed of the tube
feeding devices and printer, when combined with means for independently
interrupting the movement of the printer.
Fourth: The cutter bar having a combined reciprocating and rocking movement.
Fifth: The clamping devices, for clamping and releasing the paper tubes in the
rrier, controlled by frictional resistance during the movement of the carrier.
Sixth In the bottom formers:-
a. Collapsible sections composing a suction bottom former.
b. The bottom former, when composed of hollow sections communicating
with one another internally, in combination with a suction passageway
communicating with the interior hereof.
c. The reciprocating carrier provided with a suction passageway through
it communicating with the interior of the suction formers.
d. The movable forming fingers 137 (137") carried by the suction formers
and projecting upon the faces thereof at intervals.
e. The devices for operating the fingers 137 (137") substantially as shown
and described.
f. The reciprocating plates 128 (128) projected against the sides of the
paper tube when partially opened out by the formers.
g. The means for operating the plates 128 (128").
h. The single cam substantially as described for operating the two sections
of each former.
i. The devices controlled by the cams for rocking the sections of the formers
upon their axes, during their reciprocations.
Seventh The devices controlled by the reciprocating carrier for restoring the
ding wings 142, 142 to operative position.
Eighth The gripper of the stripping cylinder having a yielding connection
th its operating shaft.

page_text: Ninth In the final folding devices:-
a. The oscillating tucker-plates hinged concentrically with the rollers
between which the paper tube passes.
b. The means for oscillating the tucker plates.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.