Improvements in Paper Bag Machines.
Year: 1889

page_text: of Application, 26th Nov., 1889-Accepted, 22nd Feb., 1890
COMPLETE SPECIFICATION.
Improvements in Paper Bag Machines.
We ARTHUR L. STEVENS of 11 South Ninth Street, Philadelphia, United States of
America, Mechanical Engineer and THE REMINGTON MACHINE COMPANY of
Wilmington, Delaware in the said United States, Machine Makers, a company
incorporated according to the laws of the State of Delaware, do bereby 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 :—
Our invention relates to that class of paper bag machines which make either flat or
square bags having tucked bottoms and comprises certain devices by which the
following advantages are secured; viz.,-To provide a machine that will make bags from
a tube of paper fed with a continuous non-varying speed into the machine, the bottom
tuck being formed while the tube is in motion and before the bag length is severed
from the tube, thus insuring uniformity in the bottoms; that will grip the pilot end
of the bag securely while the bag length is being severed from the tube, insuring
uniformity in the bag lengths, that will allow sufficient slack paper in the bag length
while severing from the tube and deliver the bags at an accelerated speed to allow a
gap or space between succeeding bags; that will be positive in its action and retain a
firm grip upon the paper without once releasing it until the completed bag is delivered
from the machine; that will apply paste to the bottom tuck without danger of throwing
paste when running at high speeds; that will cut or sever the paper into bag lengths
without wide and dangerous revolving parts to interfere with stiff and rigid
construction; that will print a brand or number upon the bags; that will be perfectly
adjustable to different sizes and lengths of bags and that will be capable of working
at high speeds.
The accompanying drawings represent a machine constructed according to our
invention. Figure 1 is a side elevation of the machine; Figure 2 is a transverse section
on line A B with the gear wheels 12 and 13 removed and showing the feed rolls,
driving shaft and the severing blade. Figure 3 is a longitudinal section through the
machine on line CD showing the position of the various rolls and bottom-tucking
device. Figure 4 is a plan view of the machine with the paste box removed.
Figures 5 and 6 are enlarged sectional views of the gripping rolls illustrating the
manner in which the bottoms of the bags are tucked and pasted. Figures 7 and 8 are
detailed views of one of the gripping rolls and mechanism for retarding and accelera-
ting the motion of same. Figure 9 is a diagram of the severing device showing the
path of blade and period of greatest acceleration. Figures 10 to 17 illustrate on a
larger scale those parts of the machine by which the printing of a brand or number on
the bags effected.
Upon the base 1 is secured the bed 2. Upon this bed 2 near its back end and
supported in suitable bearings are the shafts 3 and 4 to which are secured the feed
rolls 5 and 6. The shaft 4 is the driving shaft and has the tight and loose pulleys 7 and 8
and the hand wheel 9. Secured to shaft 3 is the gear wheel 10 engaging with the
gear wheel 11 on shaft 4. Motion is imparted to the other parts of the machine
through the intermediate gear wheel 12 and adjustable gear-wheel 13. Upon the
forward end of the bed 2 is the movable frame 14 which supports in the fixed
bearings 23 the shaft 15, this shaft having secured to it the roll 16, gear wheels 17
and 18 and the cam 19. Loose on shaft 15 is the internal gear wheel 20. The
bearings 23 are placed near the ends of the roll to insure rigidity and smooth running.
The top of this roll 16 is at or near the line of tangency of the feed rolls so that the
paper delivered from the rolls will pass across the top of said roll. Forward and
above the roll 16 is the roll 26 on shaft 25 running in the sliding boxes 24.
Said shaft has secured to it the gear wheel 27 and the mitre gear wheel 28 which

page_text: .
is adjustable by being secured to the shaft by the clamp 29. The boxes 24 are
near the ends of roll 26 and are forced back by the spring 31 extending across
the machine and having its ends resting upon the pins 32 which bear on said
boxes. The tension of the spring is adjustable by means of screw 33, the office
of this arrangement being to insure an even firm contact between the surface of
the two rolls 16 and 20, and yet allow them to spring apart sufficiently to allow
varying thicknesses of paper to pass and to further prevent accident if the paper
"wads."
The internal gear wheel 20 is twice the diameter of the gear wheel 17
and has keyed or secured to its hub the changeable gear wheel 22 which in
circumference is equal to twice the bag length. Between the gear wheels 20
and 17 is the intermediate pinion 21 carried on a stud in the radius bar 34. To
the end of the radius bar is attached the connecting rod 35 which is attached by
clamp 36 and stud 37 to the lever 38. The lever 38 is fulcrumed on stud 40 in
frame 14 and is provided with a roll or wheel 39 in contact with the cam formed
upon the outer rim of the gear wheel 20 (see Figures 1 and 7). At opposite
points on the rim of wheel 20 are depressions 41 into which the roll 39 falls by
the action of the spring 42 and also by the pressure or thrust of the wheels. The
wheel 20 being twice the diameter of the wheel 17 it will make one-half of a
revolution to one revolution of the latter. And since their motion is in contra
directions and as the wheel 20 turns with a constant velocity, it follows that when
the radius bar and pinion remain in a fixed position the velocity ratio between
the wheels 20 and 17 is constant, but when the radius bar and pinion are being
moved around in the direction in which the wheel 20 is moving, the angular
velocity of the wheel 17 and consequently the roll 16 will be reduced and per
contra when the bar and pinion are moved around in the opposite direction the
angular velocity of the roll 16 is increased. As the diameter of the roll 16 is
greater than one-half the diameter of the largest change wheel it follows that the
surface velocity of the roll 16 is greater than the speed of the paper (the pinion 21
being in a fixed position). But as the paper must be in the bite of the rolls 16
and 26 before the bag length is severed without producing tension in the same, in
fact it being desirable to have a little slack paper between these rolls and the line
of severance 44, the radius bar is moved at or near the time that the paper enters
between the rolls, by the roll 39 on lever 38 following the depressions 41 in the
cam, thus carrying the pinions 21 in the same direction as the wheel 20 is turning
and causing a retardation in the velocity of the rolls until the paper is severed,
when by the roll 39 passing out of the depression in the cam, the radius bar and
pinion are carried back to their former position, thus accelerating the velocity of
the rolls and carrying the completed bag in advance of the following paper tube.
The amount of retardation of the rolls 16 and 26 should be enough to reduce their
surface velocities below that of the feed rolls at the moment when the bag is severed from
the tube and this amount of retardation is adjusted by the position of the stud 37 in the
slotted end of the lever 38 which regulate the throw or stroke of the radius bar 34.
To make different lengths of bags a changeable wheel 22 is chosen the circumference
of which is twice the desired bag length, so that the rolls 16 and 26 will always make
one revolution to each bag.
The movable frame 14 is clamped by screws 43 to the bed 2 in such a position that
the distance from the line of severance 44 to the line of tangency between the rolls 16
and 26 is equal to the bag length minus the sum of the bottom lap, required slack
paper and the length of paper allowed between rolls 16 and 26 at the moment of
severance.
Supported in suitable bearings on the frame 14 is the rock shaft 45 having arms 46
near each end of the roll 16. Between these arms is stretched the wire or blade 47.
The centre of shaft 45 is so located that when it is rocked to and fro the arc of
vibration for the wire 47 is between a point near the bite of the rolls and a point some
distance above the plane of the paper as it enters the machine. Between the path of
the wire 47 and the roll 26 is the fixed bar 48 having its edge a little lower than the
'plane of the paper. Motion is imparted to the wire 47 by the cam 19 fixed to shaft 15)

page_text: and against which the roller 49, carried at the extremity of an arm on rock shaft 45,
is forced by the spring 50. The action of the spring forces the wire 47 downward
and against the paper thus preventing breakage in case the paper should bunch or
wad," as would be the case. if it was foreed down by the cam. On the top of the
frame 14 is the paste box 51 with its bottom V-shaped, the point of the V being over
the bar 48 and but a little removed from it. At its lower extremity is the slot 52 in
which is suspended the blade 53, one of the functions of which is to form a valve to
prevent the outflow of paste.
Supported in bearings upon the paste box is the rock shaft 54 having an arm
carrying the roller 56, and arms 55 which pass through slots in the yoke.57 attached
to blade 53. Attached to the top of the blade is the spring 58 which raises the blade
and brings the roller 56 in contact with the cam on the rim of wheel 20. As the
roller follows the depressions of said cam, corresponding in time to each succeeding
bag, the blade is slightly raised and again depressed, thus feeding a small amount of
paste through the slot 52 where it is wiped off on the bottom of each bag.
As the paper tube enters over the roll 16 and between the lower extremity of the
paste box and the bar 48, the wire 47 descends tucking back or doubling the bottom
upon the tube, and at the same time wipes the paste from the opening in the paste box
as shown in Figure 5. The wire carries the tucked end to where it is caught in the
rolls 16 and 26. The wire then ascends and pauses until the succeeding bag. This
wire or blade 47 being narrower than the bottom tuck it lies between the point or
break of the tuck and the pasted end, and therefore does not become smeared with
paste. In the rolls 16 and 26 are hard steel blocks 59 forming gripping surfaces that
hold the bottoms of the bags while the same are being severed from the tube. The
roll 26 is grooved at 60 to prevent any paste that squeezes out of the bottom lap
becoming smeared upon the surface of the roll. Below the roll 26 is a printing roll 61
having type that is impressed upon each bag as it passes through the machine.
This printing device is fully described further on with reference to Figures 10 to 17.
The rolls 16 and 26 have circumferential grooves 62 for the insertion of guiding
wires 63 and 64. Upon the side of the bed 2 is the extension 65 to which is secured
the bracket-bearing 66 in which runs the splined shaft 67. The mitre wheel 68 on
said shaft engages with wheel 28 on shaft 25 and has a groove in its hub into which
the end 30 of shaft 25 extends, so that when the frame.14 is moved forward or back-
ward the wheel 68 slides on the splined shaft 67 while remaining in gear with
wheel 28. To the end of shaft 67 is secured the crank disc 69 with pin 70 to
which is attached the vibrating slide bar 71. Secured to bar 71 is the severing
blade 72. Upon the extension 65 is the fulcrum stand 73 having the oscillating
sleeve 74 through which the bar 71 slides. Motion being in the direction of the
arrow Figure 2 the blade in its upward throw has its velocity accelerated at the
time when it severs the paper and gradually retarded and withdrawn to one side by
the motion of the crank until the end of the blade is clear of the paper tube, when
it dips downward and forward and is again accelerated to the severing point. To
time the severing blade with the bottoming device, the machine is turned until a
bottom is formed and is in the bite of rolls 16 and 26, the clamp 29 is thus loosened
and the crank turned until the blade strikes the underside of the paper tube; the
clamp is then tightened securing wheel 28 to its shaft, thus making the relative time
of vibration for blade 71 to correspond with the periodical action of the various other
parts of the machine, to the effect that after each bottom is formed and while said
bottom is gripped by the rolls 16 and 26 the blade 72 passes across the plane of the
paper and severs it by forcing it against the serrated edges of the former 75 and fixed
blade 76:
Great advantages are secured by this device which will appear when it is undr
stood that in order to sever the paper properly it is necessary that the upward
velocity of the blade at the moment of severance should be several times that of the
paper. In machines having a blade revolving upon a simple axis for this purpose the
great size and wide path necessary for the sweep of the blade involves a wide and
open construction "with deep gaps or wide frames not consistent with stiffnes or

page_text: admissable in high class rigid and fast running machinery. But in our machine the
path of the blade is restricted within comparatively short limits and the necessary
severing velocity attained by a gradual acceleration to the moment of severance.
This enables us to make the parts compact and well supported upon a rigid base. The
position of the end of the former 75 and blade 76 are such that the bottom ply of the
tube is severed forward of the line at which the remaining ply is severed with the
object of applying paste to the long or bottom ply as it is tucked. The former 75
is similar to the formers commonly used in paper bag machines of this class and its
function is well understood by persons conversant with these machines.
The operation of the machine is briefly as follows:-
Power is applied by belt to the pulley 7 and the paper tube fed into the machine by
the feed rolls 5 and 6. Motion is communicated to the roll 16 through the inter-
mediate wheel 12, adjustable wheel 13, change wheel 22, internal wheel 20 and
pinion 21 gearing with wheel 17 on shaft 15; roll 26 is actuated by means of
wheel 18 on shaft 15 and wheel 27 on shaft 25. Motion is imparted to the severing
device through wheels 28 and 68. By means of the change wheel 22 of suitable size
the various parts of the machine are caused to perform their movements and functions
periodically in time with each bag interval. As the pilot end of the tube reaches
across the bar 48 the wire or blade 47 descends tucking the end of the tube and at
the same time wiping paste from the lower extremity of the paste box at 52. As the
tucked bottom enters between the rolls 16 and 26 the wire ascends and the roller 39
following the depressions in the cam on rim of wheel 20 actuates as before described
the radius bar 34 and pinion 21, thereby retarding the velocity of the said rolls
sufficiently to cause slack paper between them and the line of severance 44.
The blade 72 then ascends severing the bag length from the tube. The rolls 16
and 26 are again accelerated in the manner described until the surface velocity is
greater than the speed of the paper, thus making an interval or space between
succeeding bags. Between or during each bag period the blade 53 is raised slightly
and again depressed, extruding a small quantity of paste along the line of opening in
paste box to be wiped off by the next bag bottom formed.
We will now describe that part of the machine which prints a brand or number
upon the bags; this part is shown in detail in Figures 10 to 17.
Figure 10 is a longitudinal section through the fountain roll; Figure 11 is a
transverse section on line F G ; Figure 12 is a transverse section on line CD and
shows the position and relation of the fountain roll with the other rolls in the bag
machine. Figure 13 is a transverse section on line A B showing the device for
feeding ink. Figure 14 is a detail view of one of the bearings and device for regu-
lating the impression. Figures 15 and 16 are views of the ink distributing roll, and
Figure 17 is an illustration of the class of work the device is designed to do.
In these Figures 1 is the fountain roll made in two parts and secured together by
screw bolts 2 and keyed to shaft 6. The shaft 6 is supported in bearings 7 and 8 and
has keyed to its end the disc 9. The disc 9 has a T-groove 10 in its face. The
driving wheel 11 is clamped to the face of the disc by the bolt 12 in the T-groove.
The end of the shaft is squared at 13. The cord chamber 3 in the roll 1 is for ink.
At the centre of the roll its diameter is reduced a little, forming an ink distributing
surface 4. A hole is drilled from the end in such a position that it will cut through
or be tangent with the surface 4 and has inserted in it the spindle 5. The metal is
cut away a little at 14 leaving the top of spindle 5 exposed. Holes 42 are drilled
through from the spindle chamber. into the ink chamber 3 from which the ink flows
by centrifugal. action due to the rotation of the roll. The spindle 5 thus forms a
valve which closes the passage for ink but feeds it slowly as it is used by oscillating
in its seat. This is accomplished by means of the fork 17 secured to the outer end of
the spindle and spanning the fixed excentric 16 which is formed on the end of the
bearing 7. The ink is distributed over the surface 4 by means of the roll 15. In the
opposite side of the fountain roll from the spindle 5 is the sliding. type block 18. On
the end of the bearing 8 is the adjustable.sliding block 19 baving a sleeve extension
terminating in an excentric 20.. One side. of the sliding block 19 is dovetailed with

page_text: the bearing 8 and in the other side is inserted the screw 21, the block 19 being
threaded and counterbored a short distance in at each side to allow the heads of the
screw to enter. The half of the hole for screw 21 that is in the bearing 8 is smooth
without threads and the heads of the screw bear against each side. By turning the
screw the block 19 is caused to slide across the end of the bearing 8 increasing or
diminishing the excentricity of the collar 20 with the shaft 6. Fulcrumed on pin 32
in roll 1 is the fork or yoke 23 which spans the excentric 20. On one arm of the fork
is the boss 24 which is drilled out to receive the shouldered pin 25. A slot or
opening is made through the web of the roll 1 into the radial slot containing the type
block, and through this opening extends the boss 24 and pin 25. The type block is
slotted to receive the pin which holds it in position. The pin 25 has a nut or head 26
and a spring 27 forces the pin into the slot in the type. The type can be removed by
pulling back the pin by means of the head 26. As the roll 1 revolves the fork 23
will, by means of the excentric 20, vibrate the pin 25 toward and from the centre of
the roll thus alternately depressing the face of the type even with the depressed
surface 4, when the type is opposite the inking roll 15, as in Figure 12 and raising
it even with the outer surface when revolved to the opposite side or to the point where
it is desired to impress the type against the paper. Figure 12 shows the relative
position of the fountain roll with the other parts of the bag machine in which the
roll 28 is the impression roll or the roll against which the type is pressed, and has in
this case a yielding surface at 29 where the impression is received. The bags are
formed and delivered from between the rolls 28 and 30 and pass between rolls 28
and 1. Near the upper end of each bag is generally a brand or number denoting its
size as in Figure 17. These rolls 1, 28 and 30 are geared together and make one
revolution for each bag. To time the roll 1 so that the type will print at the desired
place on the bag the screw 12 is loosened and as the bag is brought to the desired
position. the roll 1 is turned by means of the square head 13 so that the type will
impress the desired place of the bag, the bolt 12 is then tightened clamping the gear
wheel to shaft, and as the wheel 11 gears with a corresponding wheel on roll 28 it
follows that the rotative position of the rolls 1 and 28 remains fixed until it is desired
to change them again by the means just described. The bearings for the roll 1 are
supported upon stiff steel springs 31 bolted to the frame of the machine, the object
being to insure firm contact between the surface of the rolls 1 and 28, at
the same time allowing varying thicknesses of paper to pass between them.
The ink distributing roll 15 is carried on one end of the spindle 32 which
has bearings in the hinged piece 33. This hinged piece is secured to the
frame of the machine by means of the foot 34. The roll is forced upward
against the type and ink fountain by means of the spring 35. The spindle 32 is
splined and has a worm 36 thereon. Engaging with this worm is the worm wheel 37
secured to a stud 38 having an excentric head 39. Fulcrumed to the hinged
piece 33 is the forked bell crank 40 which is actuated by the said excentric and
has a pin 41 projecting into a groove in the end of spindle 32. This arrangement
gives a lateral movement to the ink-roll as it revolves, distributing the ink more
uniformly than it would without this movement.
In operation the fountain is supplied with ink and the type is set to register at
the right point on the bag, and the machine started, the fountain roll revolving once
for each bag, and: as the type approaches the roll 28, the fork 23 in revolving around
the adjustable excentric collar 20 forces the type out against the roll 28 with a
pressure dependent upon the adjustment of said excentric by means of the thumb
screw 21. As the motion of the roll continues the type is withdrawn and brought even
with the ink distributing surface 4, and in this position passes the roll 15.
revolution of the fountain the spindle. 5 is oscillated by means of the fork 17 and
excentric 16, thus supplying ink to the roll 15. The roll 15 revolves by contact with
the fountain roll and has a lateral movement as before described for the purpose of
distributing the ink uniformly.
At each.
All the movements required to perform the various functions; and offices of the

page_text: parts are secured by simple means dependent upon the rotation of the roll 1 and the
device is all self contained thus making it well adapted to be attached to any
machine.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim in respect of paper bag machines is :-
1. The combination with feed rolls having a constant speed, of gripping rolls
having a normal surface velocity greater than but periodically retarded below that of
the feed rolls, and a vibrating severing blade having its movement timed with the
said retardation of the gripping rolls, substantially as set forth.
2. In a paper bag machine in which a paper tube is fed by rolls having a constant
speed, the combination of a device for severing the paper tube into bag lengths with
gripping rolls having a normal surface velocity greater than that of the said paper
tube but retarded periodically to correspond to the time of severance of said tube
into bag length, and again accelerated to produce intervals between the succeeding
lengths, substantially as set forth.
3. A paper bag machine having paper feeding rolls running at a constant velocity
in combination with gripping rolls having a velocity which is periodically retarded
and accelerated, the position of said rolls relative to the feed rolls being adjustable to
correspond to the different bag lengths and a severing blade to sever the paper into
bag lengths, substantially as set forth.
4. A paper bag machine comprising the feed rolls 5 and 6, the gripping rolls 16
and 26 which are retarded and accelerated alternately and periodically, the severing
blade 72, vibrating tucking blade or wire 47, the fixed bar 48 and the paste
box 51 having an opening or slot in its lower edge to apply paste to the paper as it
is tucked by the said wire 47 substantially as described with reference to
Figures 1 to 9.
5. In a paper bag machine the combinations of paper feeding rolls, gripping rolls
and severing device, with a vibrating tucking blade or wire, a fixed bar over
which the paper is folded and a pasting device in which the box or receptacle
containing paste has a slot or opening along its under side in which is a blade
to act as a valve and which rises and falls at each bag interval, substantially as
set forth.
6. In a paper bag machine the combination of paper feeding rolls running at a constant
speed, gripping rolls which are periodically retarded by means of a gear wheel or
pinion which is intermediate between a wheel on one of said gripping rolls and a
large internal wheel which revolves at a constant velocity, said intermediate pinion
being moved during the period of retardation with said internal wheel, substantially
as set forth.
7. In a paper bag machine the combination of paper feeding rolls running at
a constant velocity, gripping rolls which are periodically retarded and accelerated
by means of a device consisting of an internal wheel 20 revolving in a direction
opposite to that of the gripping rolls, and a pinion 21 intermediate between said
wheel 20 and a wheel 17 on the shaft of one of the gripping rolls, said pinion being
carried on a radius bar such as 34, said bar being connected to a lever such as 38
having a roller 39 in contact with a cam on the rim of said internal wheel, by means
of which the intermediate pinion is moved with or contra to the motion of said internal
wheel, substantially as described with reference to Figures 1 to 9.
8. In a paper bag machine, the combination of paper feeding rolls, bottom gripping
rolls and bag length severing rolls, with a wheel on the shaft of one of said gripping
rolis, a large internal wheel, intermediate between said wheels, a pinion carried on a
radius bar which is connected to one end of a lever having a roller at its other end in
contact with a cam on the rim of: said internal wheel, substantially as described and
for the purpose set forth.
9. In a paper bag machine, the combination of paper feeding rolls and bag lengths

page_text: gripping rolls, with a severing blade attached to a bar having one end connected to a
revolving crank pin and sliding through an oscillating sleeve, substantially as
described.
10. In a paper bag machine having feeding rolls and serrated former or cutting
blades, the combination of gripping rolls and bottoms tucking blades, with a vibrating
severing blade, the motion of which is accelerated at the time of severing the paper,
but retarded and withdrawn to one side during its downward stroke, substantially as
set forth.
11. In a paper bag machine, feed rolls running at a constant velocity, a vibrating
blade which tucks or folds the bottom lap on the pilot end of the paper tube before the
bag length is severed, a paste receptacle having an opening or slot from which the
paste is wiped by the bottom lap, bottom gripping rolls which have a normal velocity
greater than the paper, but which are retarded to below that velocity at the time the
bottom lap enters between them, said rolls being adjustable in their relative distance
from the feed rolls to correspond to the different lengths of bags, and a vibrating blade
which severs the paper into the bag lengths while the bottoms are between the
gripping rolls, substantially as set forth.
12. In a paper bag machine, the combination of the bottom gripping rolls 16
and 26 and fixed bar 48, with the rock shaft 45 having arms 46 and tucking blade or
wire 47, the roller 49 carried on an arm on said rock shaft, the cam 19 and spring 50
substantially as described with reference to Figures 1 to 9.
13. In a bag machine, the bottom gripping rolls 16 and 26, the fixed bar 48 and
vibrating wire 47, in combination with the paste box 51 having a slot or opening 52 in
its lower extremity and near the bar 48, said slot being closed by a valve or blade 53
which is raised to feed paste to each bag bottom, substantially as described with
reference to Figures 1 to 9.
14. In a paper bag machine the movable frame 14 supporting the roll 16 in fixed
bearings, and the roll 26 being supported in sliding boxes, the spring 31 to force said
roll against the roll 16, the mitre wheel 28 on the shaft of said roll 26, the splined
shaft 67, mitre wheel 68, crank having pin 70, oscillating sleeve 74 and bar 71 with
severing blade 72 in combination with feed rolls 5 and 6 substantially as described
with reference to Figures 1 to 9 and for the purpose set forth.
15. In a paper bag machine, the shaft 15 having roll 16 and gear 17 secured
thereto, the internal wheel 20 revolving loosely on said shaft and having a changeable
wheel 22 secured to its hub, the intermediate pinion 21 between said wheels 17°
and 20, said pinion being carried on a radius bar 34 about the centre of shaft 15 and
having its end attached to the end of a lever 38 fulcrumed to the frame 14 and having
a roller 39 in contact with a cam on the rim of wheel 20, in combination with the
roll 26, bottom tucking blade 47, bar 48 and the severing blade 72, substantially as
described with reference to Figures 1 to 9 and for the purpose set forth.
16. In a paper bag machine, the combination of an ink [fountain roll, with a
sliding type block, said type being raised and depressed by a fork fulcrumed to said
roll and revolving around an excentric which is secured to a fixed bearing, substan-
tially as described and for the purpose set forth.
17. In a paper bag machine, a fountain roll having a depressed surface for the
distribution of ink, a device to feed ink from the interior of said fountain roll to the
distributing surface, consisting of an oscillating spindle inserted in said roll with its
surface tangential with said distributing surface, and by its oscillations supplying ink
through openings in the fountain roll, in combination with an ink distributing roll
and type sliding in said fountain roll, the face of said type being pushed out even
with the outer surface of the fountain roll and then depressed even with the said
distributing surface as it passes the ink roll, substantially as described and for the
purpose set forth.
18. In a paper bag machine, a printing attachment comprising the fountain roll 1,
the inking roll 15, the sliding type 18, the spindle valve and ink feeder 5, the said
spindle oscillating as the fountain revolves thereby supplying ink to the roll 15 which

page_text: distributes it over the depressed surface 4 of said fountain and the face of the type 18,
the type 18 being pushed out once in each revolution of the fountain even with
its outer surface, substantially as described with reference to Figures 10 to 16 and
for the purpose set forth.
19. In a paper bag machine, a printing device having an ink fountain roll with
a depressed surface, and having openings communicating with the interior of said
roll and the outside, said openings being closed by an oscillating spindle valve
and feeder which is actuated by means of a fixed excentric and a fork on the end
of said spindle, a sliding type block which is alternately pushed out even with the
outer surface of the roll and withdrawn even with the depressed surface for the
purpose of receiving ink from the ink roll and printing the same against the paper,
and an ink distributing roll, substantially as described.
20. In a paper bag machine, the combination of a fountain roll having an ink
feeding spindle and distributing roll as described, with a sliding type block actuated
by means of a fork or yoke fulcrumed to said fountain roll and an excentric fixed to
one of the bearings of said roll, substantially as described.
21. In a printing attachment of a paper bag machine, the roll 1 having a depressed
ink distributing surface such as 4, and an ink feeding spindle 5 actuated by means
of the fixed excentric 16, said roll being provided with a sliding type block 18 which
is raised and lowered by means of the yoke 23 and the adjustable excentric 20 in
combination with an ink distributing roll in contact with said depressed surface 4,
and having a lateral motion imparted to it as it revolves, substantially as described
with reference to Figures 10 to 16.
22. In a printing attachment of a paper bag machine having a fountain roll such
as 1 with depressed ink distributing surface 4 and ink feeding device such as
described, the combination of a sliding type block 18 with the fork 23 which is con-
nected to said type by the sliding pin 26, the adjustable excentric 20 and the
distributing roll 15, all substantially as described with reference to Figures 10 to 16
and for the purpose set forth.
23. In a printing attachment of a paper bag machine the roll 1 having a depressed
surface at 4 upon which ink is distributed by the roll 15 in combination with the type
block 18, the yoke 23 having pin 26 projecting into a slot in said type block, the
yoke acting excentric 20 on the end of the sliding block 19, said sliding block 19
being fitted to the end of one of the bearings for the said roll 1 and capable of
adjustment by means of the thumb screw 21, thereby increasing or diminishing
the excentricity of said excentric 20, substantially as described with reference to
Figures 8 to 16 and for the purpose specified.
24. In a paper bag machine, a printing attachment comprising the fountain roll 1
having an oscillating spindle 5 to feed the ink, the sliding type 18 actuated by the
yoke or fork 23, and adjustable excentric 20, said excentric being on a sliding piece
fitted to the end of one of the bearings, said yoke being provided with the pin 26
and spring 27 for the purpose specified, and the ink distributing roll 15, substantially
as described with reference to Figures 10 to 16.
25. In a printing attachment of a paper bag machine, the combination of the
fountain roll and type 18 with the ink roll having a worm 36 on its splined
spindle 32, the said worm engaging with the worm wheel 37, which actuates the
bell-crank 40 by means of the excentric 39 thereby vibrating the spindle and roll
laterally as it revolves in contact with said fountain roll, substantially as described
with reference to Figures 10 to 16.
26. In a paper bag machine, a printing attachment comprising the fountain roll 1
having the sliding type 18 and fork 23 actuated by the excentric 20 for the purpose
pecified, said fork being connected with said type by the pin 26, the ink feeding
spindle 5 actuated by the fork 17, and excentric 16, in combination with the ink
distributing roll 15 having on its spindle a worm 36 engaging with the worm
wheel 37, the excentric 39 being secured to said wheel and actuating the bell
crank 40 which is connected with the spindle 32, thereby vibrating said roll 15

page_text: laterally as it revolves in contact with said fountain roll, substantially as described
with reference to Figures 10 to 16.
27. Constructing paper bag machines as hereinbefore described and represented in
the accompanying drawings.
Dated this 23rd day of November 1889.
J. C. MEWBURN,
55 & 56, Chancery Lane, London, Patent Agent.