Year: 1898

page_text: I, ACHILLE JOSEPH DENOYER, of Moret, Department of Seine and Marne, in
the Republic of France, Mechanician, do hereby declare the nature of this inven-
tion to be as follows:
This invention relates to improvements in machines for manufacturing paper
bags having square bottoms, such improvements referring more especially to
the machine described in the Specification of my former Patent No. 215 dated
January 4th 1893 the object of such improvements being to simplify the con-
struction, render the operation more certain and increase the output of the said
machines, without prejudicially affecting the formation of the bags or their
tightness.
In order that my invention may be clearly and readily understood, I have
represented the same in the accompanying drawings in which:
Figure 1 is a side elevation of a machine comprising my improvements and
intended for the production of square bottomed bags.
Figure 2 is a corresponding plan view, seen from above.
Figure 3 is a longitudinal section taken upon the line 3-3 of Figure 2.
Figures 4 and 5 are views in elevation and in plan respectively of a table or
form upon which preparation for the formation of the bags takes place.
Figures 6, 7, 8, 9 and 10 are detail views of some of the operative parts of
the machine.
Figures 11, 12, 13, 14, 15, 16 and 17 shew the different relative positions of
the various parts serving for the formation and sticking of the folds of the bag
bottoms.
Figures 18, 19, 20, 21, 22 and 23 illustrates the successive phases of the manu-
facture of a bag, and
Figure 24 is a perspective view of a finished bag in an open condition.
The machine represented in Figures 1, 2 and 3 has a frame A supporting all
the operative and fixed parts necessary in the manufacture of the bags,
at the rear portion of which frame is situated a reel B carrying the endless.
band of paper employed in such manufacture.
The paper from this reel B passes successively over rollers b and c before
reaching the table or form C hereinafter referred to. The rollera merely acts as a
guide, whilst the roller b, arranged opposite to a printing roller b¹, serves to

page_text: support the paper whilst it is being impressed; the roller c arranged opposite to
a milled pasting roller, also serves to support the paper during the operation of
applying the adhesive substance..
The printing roller 61 has a circumferential development equal to the length
of the paper required for the formation of the bag; to its surface is applied a
rubber stamp bearing the device or matter desired to be impressed, and it is
caused to rotate by means of an endless chain 62 passing over a chain-wheel 63
rigidly fixed upon one of the extremities of its axis, and on the other
hand by a chain wheel rigidly fixed upon one of the extremities of
the axis of a cylinder Dhereinafter referred to. This printing roller is inked
by means of a cylindrical pad impregnated with ink capable of drying
very readily, in the same manner as ordinary universal pads, its rotation
being caused by that of the printing roller. It should be pointed out that the
rubber stamp is mounted upon its roller in such a position that the impression
is effected at a predetermined place upon the paper corresponding to a fixed
position upon the finished bag; it will, however, be understood that such impres-
sion may extend over the whole of the surface of the paper which will be visible
outside the formed, bags, and this in so locating the impressions that they are
arranged either lengthwise of the bags, across them or in diagonals or any
desired manner.
The pasting roller is mounted at one of the extremities of a lever cª
pivoted at and loaded at its opposite extremity with a counter weight c
serving to constantly apply the said roller beneath the band of paper x.
This roller or disc is, partly immersed in a vessel containing an adhesive sub-
stance and deposits, owing to its free rotation, a narrow strip y of the adhesive
substance (Figure 18) at a small distance from the edge of the paper opposite
to which it is situated. It should be noticed that the extremity of the lever c
which carries the milled disc c¹ is forked and that the branches of this fork sup-
port the axis of the said, disc opposite to which is rigidly fixed a roller c6 of the
same diameter as the disc c¹ and provided with an india-rubber covering at its
periphery, the said roller resting upon the edge of the band of paper opposite
to that which receives the adhesive strip y.
This roller c, owing to its adherence to the band of paper, necessarily turns
when this latter is displaced and causes the disc c¹ to participate in its movement
of rotation; on the other hand it counterbalances the pressure exerted by the
said disc upon the band of paper, in such a manner that this band has no tendency
to oblique displacement, as might otherwise be the case. It will also be noticed
that the vessel containing the adhesive substance is mounted upon a plate c
the height of which may be so adjusted that the disc is immersed in the adhesive
substance to any desired extent, and further that one of the arms of the forked
lever is provided with a scraper which embraces the disc and frees it from
any excess of the adhesive substance which it may carry on its sides."
Before proceeding further it should be pointed out that-the axis of) the: rcel.B
is provided with a brake which may be formed of a pulley d surrounded by a'
band of leather attached on the one hand to a fixed point d2 and. on the other
hand to a spiral spring, the tension of which may be régulated as desired by
means of a nut d. This brake serves to check the too rapid unwinding of the
reel. In addition to this, the axis of the reel B may be displaced laterally
in such a manner as to regulate the position of the band of paper x so that it
corresponds to the axis of the machine; this displacement may be effected by
means of a screw de traversing a nut and provided with a handle d
After having been provided with this adhesive strip aty, adjacent to
one of its edges, the band of paper & passes on to the table or form C beneath
which the lateral edges of the said band are folded in such a manner as to pro-
duce a kind of flattened pocket ¹ (Figure 18). This form C (Figures 4 and 5)
consists of a thin metal plate which, at its rear portion slightly inclined towards
the disc c¹, is of a width X equal to one half that of the band of paper›7;'less^the~

page_text: covering of the lateral edges, and which at its front: portion is reduced to a
width X¹ equal to the width of the flaps hereinafter referred to. For a certain
portion of its length the form C, is of a greatly reduced width x in order to permit
of the transverse cutting hereinafter described. The form C is fixed, at,its rear
portion, to a support C¹, whilst at its front portion it is entirely free; it is pro-
vided, in front of its wide portion with an aperture o
wires o¹ and of arranged longitudinally; the function of these wires will be
through which pass two
hereinafter explained.. To its front, portion; is fixed: a flat forked spring 03
the branches of which constantly tend to separate the said table or form.
Upon each side of this table C are arranged rollers e, e¹, serving to turn down
the edges of the band of paper projecting. beyond the edges of the said table.
These rollers e el are mounted upon a transverse axis e arranged above the table
and to, which motion is imparted by the. endless chain 62 already mentioned
which is in engagement with a chain wheel e³ fixed to one of the extremities of
the said axis. In continuation of these rollers are provided (fixed rods f. and fl
arranged beneath the table C and which serve to raise beneath this latter the
edges of the band z which are turned down by the rollers e e, in such a manner
that the band a completely envelopes the table, and constitutes a flattened sheath
or pocket as indicated in Figure 18. It will be noticed that, on the one
hand, the width X of the table C is such that the edges of the band of paper
cover each other by a certain amount, and that on the other hand the rods f
and fact successively in such a manner that the said edges are superposed
beneath the table in such order that the edge provided below with adhesive sub-
stance along the line y comes above the edge.not so provided and adheres thereto.
It will further be noticed that the rods f and flare jointed upon guides ff3
respectively which are capable of being fixed at a suitable position in
the slides ff which also form the supports of the axis. 2. It will be
seen that these rods f and f¹ may be adjusted in any direction (vertically, longi-
tudinally and transversely) thereby enabling perfectly accurate folding and
raising of the edges of the band of paper beneath the table or form C to be
effected, and the production of a flattened pocket. xl.
Opposite to the aperture o of the table or form C are two cylinders D and D¹
arranged transversely, one above and the other below the said aperture and
being of a circumferential development equal to the length of the bags to be
formed. The axes of these two cylinders are mounted respectively in bearings
and are caused to rotate in the direction of the arrows (Figure 3) in the manner
which-is, hereinafter explained; they are each provided with annular reliefs g, g,
and g g (Figures 6 and 7) which, owing to their contact through the aperture o,
press between them the pocket or sheath of paper a so as to displace it longi-
tudinally upon the form C. Within these reliefs are formed annular grooves
arranged opposite the wires o¹ o² and between these grooves there exists a central
relief g which projects to a less extent than the reliefs g g'; the object of these
grooves and of this relief is that no obstacle may be opposed to the displacement
of the sheath at the place where the superposed and adhering edges are situated
and at the same time to avoid crushing the strip of adhesive substance y which
is between these latter. Finally the cylinder D₁ is provided with a U-shaped
cavity g³, and the cylinder D with a cutting blade of corresponding form,
the return portions g³ of which are plain cutters whilst the middle portion g' is
serrated.
The cylinders D and D1 are fixed in such a manner that the blade g of one
engages in the cavity g³ of the other, in such a manner as to form shears and to
produce in the sheath or pocket ¹, at each of their revolutions U-shaped
uts 1-2-3-4 forming, in the said sheath, superposed flaps z and 2; it
hould be noticed that upon each side of the middle portion of the blade g
s provided a cavity in which the cut edges of the paper lodge, so that the flap 1
possessing a portion of the adhesive strip y does not touch the cylinder D which
s thus protected from accidental contact with the adhesive substance. It should

page_text: further be noticed that the wires o' and o2 serve to separate, whilst the sheath of
paper is advancing, the lower portion of the said sheath from the upper, and
to destroy any adherence which might exist between the superposed flaps z
and z in line with the cut 2-3 produced by the serrated blade.
The sheath of paper a¹ is then presented in this condition in front of two other
cylinders E and E' arranged transversely, one above the other, near the reduced
portion X of the table or form C. These two cylinders, of the same circum-
ferential development as the cylinders D and D', have their respective axes
mounted in bearings and are caused to rotate in the direction of the arrows
(Figure 3) in the manner hereinafter indicated; they are provided with
grooves h h respectively (Figure 8) intended to avoid the reduced portion X¹
of the table or form and to permit of contact between the external portions of
the said cylinders. The upper cylinder E is chamfered near its extremities
at h³, h in order not to crush the lateral folds of the sheath of paper ¹, so that
these latter have no tendency to cut ultimately, that is to say when the manu-
factured bags are opened; it is provided with two serrated blades h³ ³ arranged
upon the same generating line and intended to form, in the paper sheath ¹,
cuts 5-6 and 7-8 (Figure 18) which form continuations of the portion 2-3
of the preceding cut 1-2-3-4 in such a manner as to form a transverse cut 6-8.
It should be noticed that the serrated blades h3, h³ cut in combination with a
corresponding cavity or notch h* formed in the lower cylinder E' and that the
cylinder E is provided with two annular grooves h5 h into which pass, tangen-
tially beneath the said cylinder, two metal rods t t which are mounted by one
of their extremities upon a fixed crosspiece t¹, the purpose of which is to detach
from the shears or serrated blades h³, h³ the paper sheath cut by these latter.
Beyond the cylinders E E the sheath of paper 2¹ is not only supported by
the reduced portion X2 of the form C which traverses it longitudinally, but also
rests upon a fixed tablet F. It then reaches a third pair of cylinders G G¹
arranged transversely one above and the other near the said reduced portion X³,
the upper cylinder preferably being formed of two rollers mounted upon
the same axis and having their external edges chamfered at ii in order not
to crush the lateral folds of the sheath of paper, with the object already stated.
The axes of these cylinders are mounted in bearings and are caused to rotate
in the direction of the arrows (Figure 3) in the manner hereinafter indicated;
they are slightly larger in diameter than the above named cylinders D D¹
and E E', so as to impart to the portion of the sheath which passes between them
a greater velocity, in order that this portion may be detached from the remainder
of the sheath, the said portion being separated upon the cutting line 6-8, and
being the portion (Figure 19) intended for the formation of a bag. This
increase of velocity, which continues until the termination of operations, serves
to produce, between the sheath a¹ and the detached portion, and all the detached
portions which follow each other in the machine, the separation necessary
for the different phases of the formation and of the sticking of the folds of the
bottom of each of the bags in course of manufacture. The detached portions
will hereinafter be designated as sheath."
6
The sheath thus detached and separated from the sheath ¹ reaches the end
of the table or form C, that is to say the part X'. The forked spring o³ which is
arranged at this point raises the upper flap z Figure 3 of this sheath and
guides it towards an inclined plane arranged above the form C. This inclined
planek is fixed upon a frame. K mounted upon pivots one of which carries
à toothed pinion gearing with a toothed sector ³ pivoted at * and constantly
maintained depressed by means of a counter spring . A cam 6 of suitable con-
figuration, which is rigidly fixed upon the axis of the cylinder G¹, acts upon the said
sector in such a manner as to raise it progressively until the moment at which it
releases it in order that it may be depressed by the action of the said spring .
It will be noticed that an idle period, caused by the form of the said cam itself,
exists both before and after the lifting of the sector F³.

page_text: Under the influence of this latter and of the pinion arranged upon the
frame K of the inclined plane k, this latter describes an arc of a circle around
the point so as to become depressed from the front to the rear and vice versa
as will be seen hereafter.
Beneath the frame K of the inclined plane k is arranged a lever m intended
to react upon the said frame at the commencement of its depression from front
to rear, and consequently to facilitate its actuation. This lever is pivoted at m¹
and its opposite arm is attached to the extremity of a spring m² connected with
a lever m³ which is in contact with a cam m keyed upon one of the extremities
of the axis of a cylinder J hereinafter referred to. This cam, owing to its form,
extends the spring m just at the moment at which the lever m should re-act
upon the frame K, whilst the spring m² has ordinarily no effect upon the lever m.
Above one of the arms of the frame K is provided a circular part n which
is excentric with respect to the point of oscillation of the frame K and which
is intended to progressively reduce the fall of the said frame in its depression
from front to rear. This compensating part n is merely a lever pivoted at n¹
of which the opposite arm n³ is attached to a spring n³ imparting to the said
compensating part the elasticity necessary to its action. In contact with the
arm of this compensating part n is a cam arranged upon the driving
shaft M of the machine, and which, owing to its configuration, acts upon the
said arm so as to raise the compensating part n in such a manner that it offers
no resistance to the frame K when the inclined plane is depressed from the
rear to the front, that is to say when this inclined plane returns to its original
positions.
a
Until the moment at which it is lifted by the forked spring o³ of the form C,
the upper flap z is maintained by a Hexible blade mounted upon
fixed transverse rule the width of which is equal to that of the reduced
portion of the form C. This flexible blade 7 offers resistance to any acci-
dental raising of the said flap until this latter is opposite the forked spring o
Above this flexible blade and the forked spring o of the form C, is arranged
a pallet mounted in such a manner as to oscillate upon pins p' and which is
submitted to the action of a spring 22 constantly tending to cause it to oscillate
in a downward direction, but which has no effect so long as this pallet is main-
tained by a pin 23 upon one of the arms of the said frame K. On the other
hand the pins 1 of the pallet p are supported in longitudinal slides P P which
are suitably guided and submitted to the action of corresponding cams P¹ Pi
upon the axis of the cylinder G and which, when they encounter the projec-
tions of the said slides, impel these latter and likewise the pallet p towards
the front of the machine. The backward return of these parts is effected suddenly
by means of a spring P2 attached to the slides P. It should be remarked that
the cams P P act also upon the noses of the frame of the inclined plane k
in such a manner as to assist the operating mechanism of this latter when it
is depressed from rear to front; they act at the commencement of such depression.
The pallet p,
when at rest in its rear position (Figure 3) is so adjusted that its
fore edge is opposite to a line 9-10 (Figure 19) of the sheath ².
Above this pallet p is arranged a presser Q formed of two small plates q q¹
(Figure 2) which are separated by an interval such that they escape or fit upon
the inclined plane k and are mounted upon the cross-piece of a lever Q¹ of a
transverse axis one of the extremities of which is provided with an arm ³ in
contact with a cam q keyed upon the axis of the cylinder G see Figure 13. A
spring constantly tends to depress the said presser Q the purpose of which is
hereinafter explained.
The different parts which have just been described, namely, the inclined plane k,
the pallet pand the presser Q serve exclusively for the formation of a portion
of the folds of the bottom of the bags; that is to say the transition of the sheath
from the form indicated in Figure 19 to that indicated in Figure 20. In order

page_text: that this formation may be readily understood and likewise the action of the
parts which co-operate to produce it, reference should be had to Figures 11, 12,
and 13 of the drawings.
Figure 11 shews the upper flap z of the pocket raised and engaged upon the
inclined plane k at the moment at which this latter is about to be depressed from
front to rear; it also shews the pallet praised with its edge opposite the
line 9-10 and the presser Q in its raised position.
Figure 12 shews the inclined plane k depressed towards the rear, the pallet p
released from the pin 23 which is displaced by reason of the depression of the
inclined plane, the front edge of this pallet being lowered in the direction of
the table or form C in contact with the line 9-10, and the presser Q being like-
wise lowered in the direction of the said table or form C. Under these condi-
tions, the inclined plane has turned down the upper part of the sheath
towards the rear, folding the said upper portion upon the line 910 upon which
rests the front edge of the pallet p, whilst the lower portion of the sheath is
retained by the reduced portion X of the table or form C. The depression
of the pallet p towards the rear produces not only a fold along the line 9-10, but
also, and in a perfectly natural manner, the folds 1-9 and 4-10 as well as
those starting from the points 9 and 10 and terminating at the points 1 and 4'
of the lower fold z'. This folding is such that the doubled cuts 5-6-51
and 7-8-71 open and rejoin each other at the middle (Figure 20). This turn-
ing down is produced in a very rapid and practically instantaneous manner, as
it will be noticed that the sheath is constantly drawn towards the front of the
machine by the feeding and detaching cylinders G and G¹.
Figure 13 shews the sheath occupying a more advanced position in the
machine; it shews that the pallet p accompanies this sheath until the lower
fold is seized by the feed cylinders H and H', which have not hitherto been
referred to, whilst the presser Q secures the folds formed and opposes their de-
formation or the accidental raising of the portion turned down towards the
rear.
The cylinders H and H₁ (Figure 9) are arranged transversely and their circum-
ferential velocity is equal to that of the detaching or spacing cylinders G G¹,
so that the sheath, folded in the manner above described, passes from the one
pair to the other without any prejudicial traction or retrogression. The upper
cylinder H presents the peculiarity that its extremities are chamfered in order
to avoid any crushing of the lateral folds of the pocket, as above stated.
When the sheath is sufficiently engaged between the cylinders H and H¹,
the inclined plane k, the presser Q and the pallet presume their initial position
in order to act upon the following sheath.
In advance of the feed cylinders H H¹ is arranged a cylinder I rotating in
the opposite direction, as indicated by the arrows (Figure 3) and in a cavity of
which is mounted a flexible blade r to the extremity of which are fixed small
cups projecting slightly from the said cylinder which become filled with
adhesive substance in their contact with a roller taking up such adhesive
substance from a vessel R. The flexible blade is combined with a button r³
which enables it to be maintained at the bottom of the cavity in the cylinder I
when, for example, it is desired to cause the machine to run empty. The vessel R
is so arranged as to remove from the edges of the roller any adhesive substance
in excess remaining thereon.
Above the cylinder I is provided another vessel S containing adhesive sub-
stance in which are immersed two parallel milled discs ss mounted upon an
axis capable of rotation, with which discs two other milled discs may
make contact, these latter being mounted upon an axis supported by levers S¹ S¹
arranged upon an axis S2. The levers S¹ S¹are, in addition, connected by means
of a transverse reglet placed beneath the discs ; they are submitted to the
action of a counter spring s constantly tending to cause them to oscillate in a
downward direction, whilst a cams of appropriate form, tends, on the contrary,

page_text: to cause them to oscillate in an upward direction. This cam acts upon an arm s
fixed to one of the extremities of the axis S of the levers S¹ S¹.
The normal position of these levers, and consequently of the milled discs
is that represented in Figure 14, that is to say, that this position is that in which
the said milled discs are in contact with the discs s s. It is in this position that
the cylinders Hand H impel the folded sheath towards the cylinder I
(Figure 14). When the lower flap gl, situated in front, comes into contact with
the cylinder I, the cam s6 escapes from the arm 7, and the levers S S¹, under
the influence of the spring 5, oscillate around the axis S3 and bring the discs & s
for applying the adhesive substance and the reglet into the position indicated
in Figure 15.
On referring to this figure it will be seen that the lower edge of the reglet st
is applied along a line 11-121 (Figure 20) of the front extremity of the folded
sheath and inflects this extremity between the cylinders Hand H¹ whilst, on
the other hand, the milled discs each deposit a strip of adhesive substance
which, owing to the continuous advancement of the paper, extends from y¹ to y³.
The cylinders H' and I fold the previously bent front extremity which is stuck
(Figure 21) upon a portion of the two strips of adhesive substance before men-
tioned. At this moment the cam causes the discs and the reglet sto
resume their initial position, whilst the cups come into contact with the upper
flap z which has been turned down towards the rear and deposit upon it the drops
of adhesive substance which subsequently cause it to stick.
Figure 16 represents the position of the parts when the said drops y³ of adhe-
sive substance have been deposited and the bag presents the aspect shewn in
Figure 21. As shewn in this figure the direction of the sheath has been
changed and its front extremity, folded and stuck, is in advance of the rotating
cylinder. J arranged beneath the cylinder H To one of the extremities of the
axis of this cylinder J is keyed a cam j acting; by means of its periphery, upon
an-arm of an axis which carries two arms ³ ³, connected by a plate J¹
curved with a radius equal to that of the cylinder J, under the influence of a
spring attached to one of the arms 3, when the cam j releases the arm ¹ as
indicated in Figure 17. When this is the case, the upper edge of the plate J₁
is applied along the line 13-14 (Figure 21) of the front extremity of the pocket
and inflects-this latter between the cylinders 'H' and J which seize it and which,
under the influence of their rotation in the direction of the arrows (Figure 17)
displace the whole in the direction of a plate K¹: In this movement the sheath 2
is folded along the line 13-14 (Fig. 22) at the same time as along the
line 11-12 so that the upper flap and the rear, extremity of the said sheath
are applied upon the front extremity of this latter. It results from 'this' folding
that the upper flap is applied upon the lower flap which has already been
supplied with adhesive substance and adheres to it owing to the drops of adhe-
sive substance there present at the same time that it adheres at 2 upon the
strips of adhesive substance y¹ y².
3
The bottom of the bag is now finished and all its parts are firmly stuck. It
should be noticed that on leaving the cylinder Hand-J the fold 11-12 remains
formed owing to the sticking, whilst the fold-13-14 is ready to open, as shewn
in Figure 17.
The bag leaving the cylinder in this form encounters the plate K' which
guides it towards a receiving stand L where all the bags are piled one upon the
other (Figure 3). When a certain number of bags has been piled up in this
inanner, they are stood on end by hand in the manner indicated in Figure 23.
Each of the legs so manufactured may be opened for the reception of goods of
any kind, their lower end being square as shewn in the perspective view
Figure 24.
There remains to be considered the question of the driving of the machine.
The starting point for this is the shaft M which may be provided at one of its
extremities with fast and loose pulleys U and U₁, but which may also be caused

page_text: to rotate by hand by means of a handle arranged upon a square formed upon the
said shaft for that purpose. Upon this shaft is mounted a toothed pinion u
gearing with another pinion u¹ upon the axis of the cylinder G¹ which is thus
caused to rotate. This pinion u transmits.the motion to the train of gear
wheels u, u, u, u³, the pinions u³ and 5 of which (which are of the same dia-
meter as the pinion ) belong to the lower cylinders E' and D' respectively,
whilst the gear wheels u and u are merely intermediate wheels; the object of
the said train of gearing is to cause the cylinders in question to rotate in the
same direction and with the same speed, whilst to the cylinder G is imparted a
greater circumferential velocity by reason of its larger diameter. At the side of
the pinion ¹, and keyed upon the same shaft, is arranged another pinion v of
slightly larger diameter than the pinion and transmitting the motion to a
train of gear-wheels 1 and 2, of which the pinion 2 (of the same diameter as
the pinion ) belongs to the cylinder H³, whilst the wheel 1 is merely an inter-
mediate wheel; the object of the said train of wheels is to cause the cylinder H¹
to rotate at the same circumferential velocity as the cylinder G¹. With the
pinion gear other pinions 23, 24, 25 which drive the cylinders H I J respec-
tively. With the pinion gear the pinions and respectively driving the
milled discs s, s and the roller 72. The pinions and gear with other
pinions and u respectively which are intended to drive, in the desired direc-
tion, the cylinders E, D. The cylinder G is driven by the cylinder G¹ by means
of the two pairs of pinions v, 8 and 9, 10. Finally upon the axis of the cylinder D
is arranged the chain-wheel driving the chain 3 which serves, as above
explained, to operate the rollers e, e¹ and the printing roller b¹.
Such, in its construction and operation as a whole, is the improved machine
which I have devised for the manufacture of paper bags having square bottoms.
It will of course be noticed that several bags are in course of manufacture at
the same time, in various degrees of advancement.
It is true that the bags manufactured by this machine do not present any
special feature as regards their manufacture and that all the phases of the opera-
tion are identical, or almost identical, with those of the machine forming the
subject of my prior patent; but it should be noticed that the present machine,
both by its general arrangement and its constructional details, totally differs
from the original machine, and that, in addition, a more uniform and more
speedy manufacture of the bags in question is effected by its use. The object
of the whole of the modifications devised have been based upon the transfer of
the printing operation from the front to the rear of the machine.
1011
1000
HASELTINE, LAKE & CO.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
CUNT LEIE
Improvements in Machines for the Manufacture of Paper Bags.
I, ACHILLE JOSEPHI DENOYER, of Moret, Department of Seine and Marne, in
the Republic of France, Mechanician, do hereby declare the nature of this inven-
tion, and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:―
This invention relates to improvements in machines for manufacturing paper
bags having square bottoms, such improvements referring more especially to
the machine described in the Specification of my former Patent No. 215
January 4th 1893 the object of such improvements being to simplify the con-

page_text: struction, render the operation more certain and increase the output of the said
machines, without prejudicially affecting the formation of the bags or their
tightness.
In order that my invention may be clearly and readily understood, I have
represented the same in the accompanying drawings in which:—
Figure 1 is a side elevation of a machine comprising my improvements and
intended for the production of square bottomed bags.
Figure 2 is a corresponding plan view, seen from above.
Figure 3 is a longitudinal section on line 3-3 of Figure 2.
Figures 4 and 5 are views in elevation and in plan respectively of a table or
form upon which preparation for the formation of the bags takes place.
Figures 6, 7, 89 and 10 are detail views of some of the operative parts of
the machine.
Figures 11, 12, 13, 14, 15, 16 and 17 shew the different relative positions of
the various parts serving for the formation and sticking of the folds of the bag
bottoms.
Figures 18, 19, 20, 21, 22 and 23 illustrated the successive phases of the manu-
facture of a bag, and
Figure 24 is a perspective view of a finished bag in an open condition.
Like letters of reference indicate corresponding parts.
The machine represented in Figures 1, 2 and 3 has a frame A supporting all
the operative fixed parts necessary in the manufacture of the bags, at the rear
portion of which frame is situated a reel B Figures 1 and 2 carrying the endless
band of paper employed in such manufacture.
The paper from this reel B passes successively over rollers a b and c before
reaching the table or form C hereinafter referred to. The roller a merely acts as a
guide, whilst the roller b, arranged opposite to a printing roller b¹, serves to
support the paper whilst it is being impressed; the roller c arranged opposite to
a milled pasting roller, also serves to support the paper during the operation of
applying the adhesive substance.
The printing roller b₁ has a circumferential developement equal to the length
of the paper required for the formation of the bag; to its surface is applied a
rubber stamp bearing the device or matter desired to be impressed, and it is
caused to rotate by means of an endless chain 62 passing over a chain-wheel 63
rigidly fixed upon one of the extremities of its axis, and on the other hand by
a chain wheel 64 (Figures 1 and 2) rigidly fixed upon one of the extremities of
the axis of a cylinder D hereinafter referred to. This printing roller 6' is inked
by means of a cylindrical pad 65 Figure 2 impregnated with ink capable of
drying very readily, in the same manner as ordinary universal pads, its rotation
being caused by that of the printing roller. It should be pointed out that the
rubber stamp is mounted upon its roller in such a position that the impression
is effected at a predetermined place upon the paper corresponding to a fixed
position upon the finished bag; it will, however, be understood that such impres-
sion may extend over the whole of the surface of the paper which will be visible
outside the formed bags, and this in so locating the impressions that they are
arranged either lengthwise of the bags, across them or in diagonals or any
desired manner.
The pasting roller c¹ Figure 1ª is mounted at one of the extremities of a lever c³
pivoted at and loaded at its opposite extremity with a counter weight
Figure 1 serving to constantly apply the said roller beneath the band of paper .
This roller or disc is partly immersed in a vessel c containing an adhesive sub-
stance and deposits, owing to its free rotation, a narrow strip y of the adhesive
substance (Figure 18) at a small distance from the edge of the paper opposite
to which it is situated. It should be noticed that the extremity of the lever c³
which carries the milled disc c¹ is forked and that the branches of this fork sup-
port the axis of the said disc opposite to which is rigidly fixed a roller c of the
same diameter as the disc c¹ and provided with an india-rubber covering at its

page_text: periphery, the said roller resting upon the edge of the band of paper * opposite
to that which receives the adhesive strip y..
This roller co, owing to its adherence to the band of paper æ, necessarily turns
when this latter is displaced and causes the disc c¹ to participate in its.movement
of rotation; -on the other hand it counterbalances the pressure exerted by the
said disc upon the band of paper, in such a manner that this band has no tendency
to oblique displacement, as might, otherwise. be the case. It will also be noticed
that the vessel containing. the adhesive substance is mounted upon a plate c²
the height of which may be so. adjusted that the disc is immersed in the adhesive
substance, to any desired extent, and further that. one of the: arms of the.forked
lever is. provided with a scraper Figures 1 and 2" which embraces. the disc
and free it from any excess of the adhesive substance which it may carry on its
sides.
"
...
J
Before proceeding further it should be pointed out that the axis.of the reel B
is provided with a brake which may be formed of a pulley d surrounded by.a
band of leather & attached on the one hand to a fixed point and on the other
hand to a spiral spring ³, the tension of which may be regulated as desired-by
means of a nut d. This brake serves to check the too rapid unwinding of the
reel. In addition to this, the axis of the reel B may be displaced longitudinally
in such a manner as to regulate the position of the band of paper so that it
corresponds to the axis of the machine; this displacement may be effected by
means of a screw d³ traversing a nut and provided with a handle. do.
After having been provided with this adhesive strip aty, adjacent to
one of its edges, the band of paper passes on to the table or form C beneath
which the lateral edges of the said band are folded in such a manner as to pro-
duce a kind of flattened pocket al (Figure 18). This form C (Figures 4 and 5)
consists of a thin metal plate which, at its rear portion slightly inclined towards
the disc c¹, is of a width x equal to one half that of the band of paper x, less the
covering of the lateral edges, and which at its front portion is reduced to a
width X¹ equal to the width of the flaps hereinafter referred to. For a certain
portion of its length the form C of a greatly reduced width X2 in order to permit
of the transverse cutting hereinafter described. The form C is fixed, at its rear
portion, to a support C, whilst at its front portion it is entirely free; it is pro-
vided, in front of its wide portion with an aperture o through which pass two
wires o and 2 arranged longitudinally; the function of these wires will be
hereinafter explained. To its front portion, X', is fixed a flat forked spring o³
the branches of which constantly tend to separate from the said table or form.
Upon each side of this table Care arranged rollers e, e¹, serving to turn down
the edges of the band of paper projecting beyond the edges of the said table.
These rollers e e¹ are mounted upon a transverse axis e arranged above the table
and to which motion is imparted by the endless chain 6 already mentioned
which is in engagement with a chain wheel e fixed to one of the extremities of
the said axis. In continuation of these rollers are provided fixed rods f and fl
arranged beneath the table C and which serve to raise beneath this latter the
edges of the band which are turned down by the rollers e e¹, in such a manner
that the band completely envelops the table, and constitutes a flattened sheath
or pocket as indicated in Figure 18. It will be noticed that, on the one
hand, the width x of the table C is such that the edges of the band of paper
cover each other by a certain amount, and that on the other hand the rods f
and fact successively in such a manner that the said edges are superposed
beneath the table in such order that the edge provided below with adhesive sub-
stance along the line y comes above the edge not so provided and adheres thereto.
It will further be noticed that the rods f and f¹ are jointed upon guides få f³
Figures 1 and 2 respectively which are capable of being fixed at a suitable posi-
tion in the slides ffo which also form the supports of the axis . It will be
seen that these rods f and f¹ may be adjusted in any direction (vertically, longi-
tudinally and transversely) thereby enabling perfectly accurate folding and

page_text: raising of the edges of the band of paper beneath the table or form 'C to be
effected, and the production of a flattened pocket ¹.
Opposite to the aperture o of the table or form C are two cylinders D and D'
arranged transversely, one above and the other below the said aperture and
being of a circumferential development equal to the length of the bags to be
formed. The axes of these two cylinders are mounted respectively in bearings
and are caused to rotate in the direction of the arrows (Figure 3) in the manner
which is hereinafter explained; they are each provided with annular reliefs g, g;
and g g (Figures 6 and 7) which, owing to their contact through the aperture, o,
press between them' the pocket or sheath of paper ¹ so as to displace it longi-
tudinally upon the form C. Within these reliefs are formed annular grooves
arranged opposite the wires o¹ 03 and between these grooves there exists a central
relief which projects to a less extent than the reliefs g g¹; the object of these
grooves and of this relief is that no obstacle may be opposed to the displacement
of the sheath at the place where the superposed and adhering edges are situated
and at the same time to avoid crushing the strip of adhesive substance y which
is between these latter. Finally the cylinder D₁ is provided with a U-shaped
cavity 93, and the cylinder D with a cutting blade 9 of corresponding form,
the return portions of which are plain cutters whilst the middle portion is
serrated..
The cylinders D and D¹ are fixed in such a manner that the blade g of one
engages in the cavity ³ of the other, in such a manner as to form shears and to.
produce in the sheath or pocket ¹, at each of their revolutions U-shaped
cuts 1-2-3-4 forming, in the said sheath, superposed flaps z and z¹ Figure 18;
it should be noticed that upon each side of the middle portion of the blade g
is provided a cavity in which the cut edges of the paper lodge, so that the flap.
possessing a portion of the adhesive strip y does not touch the cylinder D which
is thus protected from accidental contact with the adhesive substance. It should-
further be noticed that the wires of and o² serve to separate, whilst the sheath of
paper is advancing, the lower portion of the said sheath from the upper, and
to destroy any adherence which might exist between the superposed flaps z
and in line with the cut 2-3 produced by the serrated blade.
The sheath of paper a¹ is then presented in this condition in front of two other
cylinders E and El arranged transversely, one above the other, near the reduced
portion X3 of the table or form C. These two cylinders, of the same circum-
ferential development as the cylinders D and D', have their respective axes
mounted in bearings and are caused to rotate in the direction of the arrows
(Figure 3) in the manner hereinafter indicated; they are provided witli
grooves h¹ respectively (Figure 8) intended to avoid the reduced portion X²
of the table or form and to permit of contact between the external portions of
the said cylinders. The upper cylinder E is chamfered near its extremities
at h, h2 in order not to crush the lateral folds of the sheath of paper r¹, so that
these latter have no tendency to cut ultimately, that is to say when the manu-
factured bags are opened; it is provided with two serrated blades h³ ³ arranged.
upon the same 'generating line and intended to form in the paper sheath ¹,
cuts 5-6 and 7-8 (Figure 18) which form continuations of the portion 2-3
of the preceding cut 1-2-3-4 in such a manner as to form a transverse cut 6-8.
It should be noticed that the serrated blades h3, h³ act in combination with a
corresponding cavity or notch h* formed in the lower cylinder E¹ and that the
cylinder E is provided with two annular grooves h5 h5 into which pass, tangen-
tially beneath the said cylinder, two metal rods which are mounted by one
of their extremities upon a fixed crosspiece t', the purpose of which is to detach
from the shears or serrated blades h³, h³ the paper sheath cut by these latter.
Beyond the cylinders E E¹ the sheath of paper is not only supported by
the reduced portion X2 of the form C which traverses it longitudinally, but also
rests upon a fixed tablet F. It then reaches a third pair of cylinders G G¹
arranged transversely one above and the other below the said reduced portion X

page_text: Figure 11 the upper cylinder preferably being formed of two rollers mounted
upon the same axis and having their external edges chamfered at ii in order not
to crush the lateral folds of the sheath of paper, with the object already stated.
The axes of these cylinders are mounted in bearings and are caused to rotate
in the direction of the arrows (Figure 3) in the manner hereinafter indicated;
they are slightly larger in diameter than the above named cylinders D) D'
and E E', so as to impart to the portion of the sheath which passes between them
a greater velocity, in order that this portion may be detached from the remainder
of the sheath, the said portion being separated upon the cutting line 6-8, and
being the portion (Figure 19) intended for the formation of a bag. This
increase of velocity, which continues until the termination of operations, serves
to produce, between the sheath ¹ and the detached portion, and all the detached
portions which follow each other in the machine, the separation necessary
for the different phases of the formation and of the sticking of the folds of the
bottom of each of the bags in course of manufacture. The detached portions
will hereinafter be designated as "sheath."
The sheath thus detached and separated from the sheath ¹ reaches the end
of the table or form C, that is to say the part where the width of this latter is X¹.
The forked spring which is arranged at this point raises the upper flap z
Figure 3 of this sheath and guides it towards an inclined plane k arranged
above the form C. This inclined plane k is fixed upon a frame K mounted upon
pivots Figures 11 to 14 one of which carries a toothed pinion gearing
with a toothed sector pivoted at and constantly maintained depressed by
means of a counter spring. A cam Figure 13 of suitable configuration,
which is rigidly fixed upon the axis of the cylinder G¹, acts upon the said sector
in such a manner as to raise it progressively until the moment at which it
releases it in order that it may be depressed by the action of the said spring 15.
It will be noticed that an idle period, caused by the form of the said cam itself,
exists both before and after the lifting of the sector 3.
Under the influence of this latter and of the pinion arranged upon the
frame K of the inclined plane k, this latter describes an arc of a circle around
the point so as to become depressed from the front to the rear and vice versa
as will be seen hereafter.
Beneath the frame K of the inclined plane k is arranged a lever m Figures 1,
13 and 14 intended to re-act upon the said frame at the commencement of its
depression from front to rear, and consequently to facilitate its actuation. This
lever is pivoted at m¹ and its opposite arm is attached to the extremity of a
spring m Figures 11 to 15 connected with a lever m³ which is in contact with a
cam m keyed upon one of the extremities of the axis of a cylinder J herein-
after referred to. This cam, owing to its form, extends the spring m³ just at
the moment at which the lever m should re-act upon the frame K, whilst the
spring m² has ordinarily no effect upon the lever m.
Above one of the arms of the frame K is provided a circular part n which
is excentric with respect to the point of oscillation of the frame K and which
is intended to progressively reduce the fall of the said frame in its depression
from front to rear. This compensating part n is merely a lever pivoted at n¹
of which the opposite arm n³ is attached to a spring n³ imparting to the said
compensating part the elasticity necessary to its action. In contact with the
arm n of this compensating part n is a cam arranged upon the driving
shaft M of the machine, and which, owing to its configuration, acts upon the
said arm so as to raise the compensating part n in such a manner that it offers
no resistance to the frame K when the inclined plane k is depressed from the
rear to the front that is to say, when this inclined plane returns to its original
position.
Until the moment at which it is lifted by the forked spring o³ of the form C,
the upper flap is maintained by a flexible blade 7 Figures 12 and 13 mounted
upon a fixed transverse rule the width of which is equal to that of the reduced

page_text: portion X of the form C. This flexible blade 7 offers resistance to any acci-
dental raising of the said flap until this latter is opposite the forked spring o³.
Above this flexible blade and the forked spring of the form C, is arranged
a pallet p mounted in such a manner as to oscillate upon pins 2 and which is
submitted to the action of a spring 2 constantly tending to cause it to oscillate
in a downward direction, but which has no effect so long as this pallet is main-
tained by a pin 23 upon one of the arms of the said frame K. On the other
hand the pins p² of the pallet p are supported in longitudinal slides P P which
are suitably guided and submitted to the action of corresponding cams P¹ P¹
upon the axis of the cylinder G and which, when they encounter the projec-
tions p of the said slides, impel these latter and likewise the pallet 2 towards
the front of the machine. The backward return of these parts is effected suddenly
by means of a spring P2 attached to the slides P. It should be remarked that
the cams P P act also upon the noses
inclined plane k in such a manner as to
latter when it is depressed from rear to
of such depression.
Figures 1 and 2 of the frame of the
assist the operating mechanism of this
front; they act at the commencement
The pallet p, when at rest in its rear position (Figure 3) is so adjusted that its
fore edge is opposite to a line 9-10 (Figure 19) of the sheath ³.
Above this pallet p is arranged a presser Q formed of two small plates 9 9¹
(Figure 2) which are separated by an interval such that they escape or fit upon
the inclined plane k and are mounted upon the cross-piece of a lever Q¹ of a
transverse axis one of the extremities of which is provided with an arm ³ in
contact with a cam keyed upon the axis of the cylinder G see Figure 13.
spring constantly tends to depress the said presser Q the purpose of which is
hereinafter explained.
A
The different parts which have just been described, namely the inclined plane k,
the pallet pand the presser Q serve exclusively for the formation of a portion
of the folds of the bottom of the bags; that is to say the transition of the sheath
from the form indicated in Figure 19 to that indicated in Figure 20. In order
that this formation may be readily understood and likewise the action of the
parts which co-operate to produce it, reference should be had to Figures 11, 12
and 13 of the drawings.
Figure 11 shows the upper flap z of the pocket a raised and engaged upon the
inclined plane & at the moment at which this latter is about to be depressed from
front to rear; it also shews the pallet raised with its edge opposite the
line 9-10 and the presser Q in its raised position.
Figure 12 shews the inclined plane depressed towards the rear, the pallet p
released from the pin 23 which is displaced by reason of the depression of the
inclined planek, the front edge of this pallet being lowered in the direction of
the table or form C in contact with the line 9-10, and the presser Q being like-
wise lowered in the direction of the said table or form C. Under these condi-
tions, the inclined plane k has turned down the upper part of the sheath
towards the rear, folding the said upper portion upon the line 9-10 upon which
rests the front edge of the pallet p, whilst the lower portion of the sheath is
retained by the reduced portion X¹ of the table or form C. The depression
towards the rear upon the pallet p produces not only a fold along the line 9-10,
but also, and in a perfectly natural manner, the folds 1-9 and 4-10 as well
as those starting from the points 9 and 10 and terminating at the points 11.
and 4 of the lower fold 2. This folding is such that the double cuts 5-6-51
and 7-8-7 open and rejoin each other at the middle (Figure 20). This turn-
ing down is produced in a very rapid and practically instantaneous manner, as
it will be noticed that the sheath is constantly drawn towards the front of the
machine by the feeding and detaching cylinders G and G¹
Figure 13 shews the sheath occupying a more advanced position in the
machine; it shews that the pallet 7 accompanies this sheath until the lower
Hap is seized by the feed cylinders H and H', which have not hitherto been

page_text: referred to, whilst the presser Q secures the folds formed and opposes their de-
formation or the accidental raising of the portion turned down towards the
rear.
The cylinders H and H¹ (Figure 9) are arranged transversely and their circum-
ferential velocity is equal to that of the detaching or spacing cylinders G G¹,
so that the sheath, folded in the manner above described; passes from the one
pair to the other without any prejudicial traction or retrogression. The upper
cylinder H presents the peculiarity that its extremities are chamfered in order
to avoid any crushing of the lateral folds of the pocket, as above stated:
When the sheath is sufficiently engaged between the cylinders Hand H',
the inclined plane k, the presser Q and the pallet presume their initial position
in order to act upon the following sheath .
.:
In advance of the feed cylinders H H is arranged a cylinder I rotating in
the opposite direction, as indicated by the arrows (Figure 3) and in a cavity of
which is mounted a flexible blade r to the extremity of which are fixed small
cups projecting slightly from the said cylinder which become filled with
adhesive substance in their contact with a roller taking up such adhesive
substance from a vessel R, Figures 13 to 17. The flexible block r is combined
with a button which enables it to be maintained at the bottom of the cavity
in the cylinder I when, for example, it is desired to cause the machine to run
empty. The vessel R is so arranged as to remove from the edges of the roller ³
any adhesive substance in excess remaining thereon.
Above the cylinder I is provided another vessel S containing adhesive sub-
stance in which are immersed two parallel milled discs s s mounted upon an
axis capable of rotation, with which discs two other milled discs may
make contact, these latter being mounted upon an axis supported by levers S¹ S¹
arranged upon an axis S. The lever S¹ S₁ are, in addition, connected by means
of a transverse reglet s placed beneath the discs; they are submitted to the
action of counter spring constantly tending to cause them to oscillate in 'a
downward direction, whilst a cam 36 of appropriate form, tends, on the contrary,
to cause them to oscillate in an upward direction. This cam acts upon an arm s
fixed to one of the extremities of the axis S8 of the levers S' S¹.
The normal position of these levers, and consequently of the milled discs
is that represented in Figure 14, that is to say that this position is that in which
the said milled discs are in contact with the discs & s. It is in this position that
the cylinders H and H¹ impel the folded sheath towards the cylinder I
(Figure 14). When the lower flap, situated in front, comes into contact with
the cylinder I, the cam escapes from the arms, and the levers S¹ S¹, under
the influence of the springs, oscillate around the axis S and bring the discs
for applying the adhesive substance and the reglet s into the position indicated
in Figure 15.
On referring to this figure it will be seen that the lower edge of the reglet st
is applied along a line 11-12¹ (Figure 20) of the front extremity of the folded
sheath and inflects this extremity between the cylinders H¹ and I whilst, on
the other hand, the milled discs each deposit a strip of adhesive substance
which, owing to the continuous advancement of the paper, extends from y¹ to y³.
The cylinders H¹ and I fold the previously bent front extremity which is stuck
(Figure 21) upon a portion of the two strips of adhesive substance before men-
tioned. At this moment the cams causes the discs and the reglet s to
resume their initial position, whilst the cups come into contact with the upper
flap z which has been turned down towards the rear and deposit upon it the drops
of adhesive substance y³ which subsequently cause it to stick.
Figure 16 represents the position of the parts when the said drops y³ of adhe-
sive substance have been deposited and the bag presents the aspect shewn in
Figure 21. As shewn in this figure the direction of the sheath has been
changed and its front extremity, folded and stuck, is in advance of the rotating

page_text: cylinder J arranged beneath the cylinder H¹. To one of the extremities of the
axis of this cylinder J is keyed a cam j acting, by means of its periphery, upon
an arm of an axis which carries two arms j³ ³, connected by a plate J'
curved with a radius equal to that of the cylinder J, under the influence of a
spring attached to one of the arms 3, when the cam j releases the arm 1 as
indicated in Figure 17. When this is the case the upper edge of the plate J¹
is applied along the line 13-14 (Figure 21) of the front extremity of the pocket a
and inflects this latter between the cylinders H¹ and J which seize it and which,
under the influence of their rotation in the direction of the arrows (Figure 17)
displace the whole in the direction of a plate K*. In this movement the sheath
is folded along the line 13-14 (Figure 22) at the same time as along the
line 11-12 so that the upper flap z and the rear extremity of the said sheath x
are applied upon the front extremity of this latter. It results from this folding
that the upper flap is applied upon the lower flap 2 which has already been
supplied with adhesive substance and adheres to it owing to the drops of adhe-
sive substance ³ there present at the same time that it adheres at y upon the
strips of adhesive substance y¹ y².
2
The bottom of the bar is now finished and all its parts are firmly struck. It
should be noticed that on leaving the cylinders H₁ and J the fold 11-12 remains
formed owing to the sticking, whilst the fold 13-14 is ready to open, as shewn
in Figure 17.
The bag leaving the cylinders in this form encounters the plate K* which
the
guides it towards a receiving stand L where all the bags are piled one upon
other (Figure 3). When a certain number of bags has been piled up in this
manner, they are stood on end by hand in the manner indicated in Figure 23.
Each of the bags so manufactured may be opened for the reception of goods of
any kind, their lower end being square as shewn in the perspective view
Figure 24.
There remains to be considered the question of the driving of the machine.
The starting point for this is the shaft M which may be provided at one of, its
extremities with fast and loose pulleys U and U, but which may also be caused
to rotate by hand by means of a handle arranged upon a square formed upon the
said shaft for that purpose. Upon this shaft is mounted a toothed pinion u
gearing with another pinion u¹ upon the axis of the cylinder G¹ which is thus
caused to rotate. This pinion ¹ transmits the motion to the train of gear
wheels u², u³, u, us, the pinions 3 and 5 of which (which are of the same dia-
meter as the pinion ) belong to the lower cylinders E' and D' respectively,
whilst the gear wheels 2 and u are merely intermediate wheels; the object of
the said train of gearing is to cause the cylinders in question to rotate in the
same direction and with the same speed, whilst to the cylinder G¹ is imparted a
At the side of
greater circumferential velocity by reason of its large diameter.
the pinion u', and keyed upon the same shaft, is arranged another pinion of
slightly larger diameter than the pinion u and transmitting the motion to a
train of gear-wheels 1 and 2, of which the pinion 2 (of the same diameter as
the pinion ) belongs to the cylinder H', whilst the wheel is merely an inter-
mediate wheel; the object of the said train of wheels is to cause the cylinder H¹
to rotate at the same circumferential velocity as the cylinder G. With the
pinion gear other pinions 3, 4, which drive the cylinders H I J respec-
tively. With the pinion gear the pinions and respectively driving the
milled discs s, s and the roller. The pinions and ut gear with other
pinions and u respectively which are intended to drive, in the desired direc-
tion, the cylinders E, D. The cylinder Gis driven by the cylinder G¹ by means
of the two pairs of pinions v, 8 and 9, 10 Finally upon the axis of the cylinder I)
is arranged the chain-wheel 64 driving the chain 6 which serves, as above
explained, to operate the rollers e, e¹ and the printing roller b¹.
Such, in its construction and operation as a whole, is the improved machine

page_text: which I have devised for the manufacture of paper bags having square bottoms.
It will of course be noticed that several bags are in course of manufacture at
the same time, in various degrees of advancement.
It is true that the bags manufactured by this machine do not present any
special feature as regards their manufacture and that all the phases of the opera-
tion are identical or almost identical, with those of the machine forming the
subject of my prior patent; but it should be noticed that the present machine,
both by its general arrangement and its constructional details, totally differs
from the original machine, and that, in addition, a more uniform and more
speedy manufacture of the bags in question is effected by its use. The object
of the whole of the modifications devised have been based upon the transfer of
the printing operation from the front to the rear of the machine.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:
1. The improved machine for the manufacture of paper bags having square
bottoms as a whole and in its parts substantially as herein before described with
reference to the accompanying drawings.
2. In a machine of the kind described; the addition of a brake to the reel B
from which the band of paper is unwound.
3. In a machine of the kind described the arrangement of the printing roller bi
in such a manner that it prints the band of paper and not the manufactured
bags, thereby enabling almost the whole surface of the bag to be printed upon
instead of the impression being upon one side only.
4. In a machine of the character specified the combination of the milled
disc c for depositing the adhesive substance upon one of the edges of the band
of paper, with a roller co serving to balance the pressure of the said disc and
consequently to avoid all oblique traction of the said band of paper .
5. In a machine of the character specified the combination with the table or
form C and the turning down rollers e e¹, of two rods f f jointed upon guides f³ ³
arranged in slides f* f³, the said rods being capable of being adjusted in a vertical
longitudinal and transverse direction, in such a manner that the turned-down
edges of the band of paper are folded and superposed beneath the said table in a
uniform manner.
6. In a machine of the character specified the special arrangement of the table
or form C with an aperture o provided with two longitudinal wires o¹ o³ and with
a forked spring o³ fixed to the front extremity of the said form.
7. In a machine of the character specified the combination of the table or form
C with cylinders D and D¹ arranged and operating in such a manner as to cut
the flaps zz and not to squeeze the adhesive substance from the superposed and
stuck edges of the sheath or pocket of paper.
2
8. In a machine of the character specified the combination of the table or
form C with cylinders E, E¹ arranged and operating in such a manner as to cut,
in the sheath or pocket of paper, portions of suitable length for the formation of
the bags, and with rods tt serving to release the cut portion from the said
cylinders.
9. In a machine of the character specified the spacing of the portions detached
from the sheath of paper, by means of the cylinders G G¹ arranged and operating
in the manner and for the purpose described.
10. In a machine of the kind specified the combination of the table or form C
and its forked spring o³, with an inclined plane k, a pallet p, and a presser Q
for the purpose of forming a portion of the folds of the bottom, in the manner
described and for the purpose specified.
11. In a machine of the character specified the combination of the feed cy-
linders Hand H³ with a rotating cylinder I, milled discs 53 53 supplying the
adhesive substance and mounted upon oscillating levers, and a reglet s rigidly

page_text: connected with the said levers, for the purpose of inflecting and sticking the
lower flap z of the sheath or pocket of paper, as above specified.
12. In a machine of the character specified the special arrangement of the
cylinder I provided with a cavity within which are arranged cups for the
supply of the adhesive substance, the said cylinder being intended for sticking
the upper flap z of the sheath or pocket of paper, as above specified.
13. In a machine of the character specified the combination of the cylinder H¹
with a cylinder J and a curved oscillating plate J¹, for the purpose of inflecting,
folding and sticking the upper flap z in the manner described and for the purpose
specified.
سم
1
1000
+
HASELTINE, LAKE & CO.,
45, Southampton Buildings; London, W.C., Agents for the Applicant.