Improvements in Mechanical Printing Presses.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Mechanical Printing Presses.
I, DR. LUDWIG GERO, of the Pallas Druckerei-Actien Gesellschaft, Budapest,
in the Kingdom of Hungary, Empire of Austria, Director, do hereby declare the
nature of this invention to be as follows:-
-
This invention has for its object improvements in or relating to automatic
paper feeding devices for printing machines, the present improvements
being intended to allow of the more perfect operating of the separate components
(serving for feeding the paper in mechanical printing presses), and more particu-
larly the suction pipe and the feeding table, with the object of obtaining an
improved feed of the separate sheets of paper, so that mechanical presses provided
with the above improvements may register completely without the hand labour
hitherto employed for register printing.
In the accompanying drawings;
Figure
is a front view of a mechanical press showing only the feed table
and the printing cylinder with the feeding device and the mechanism for
operating it;
Figure 2 is a right hand side view;
Figure 3, a left hand side view of these parts of a mechanical press;
Figures 4-12 are details.
Various cam discs mounted on a shaft 1 driven by the main driving shaft
of the printing press serve for operating the devices for the rapid and registering
insertion of the sheets of paper. These will now be described as follows: ---
A cam disc 2 (Figure 3) operates the levers 3 in such a way that the lever 3 which
is revoluble on a fixed point of rotation 4 and is always pressed by a spiral spring 5
with its small roller 7 arranged on its shorter arm 6 against the cam disc 2, must
move with its longer arm from the feed table to the printing cylinder and back.
This longer arm serves for holding the suction pipe S which sucks up the sheet to
be inserted, which pipe may move to and fro in a guide 9 on the said
lever. This movement of the suction pipe 8 is effected as follows by
means of an arrangement of levers and links mounted on the levers 3 and operated
by means of a cam disc 10; an elbow lever 12 pivotally mounted on an arm of
the lever 3 at the point 13 has a roller 11 on one of its arms, whilst its other
arm is coupled by means of a pin 14 to a link 15, which latter is connected in
turn by means of a pin 16 to an elbow lever 18 pivotally mounted at 17 on the
lever 3, the longer arm of this elbow lever 18 being in turn connected by means
of a pin 19 with a link 20. This link turns a crank arm 21 which is connected
to the suction pipe 8 and has a cogwheel 22 engaging in the teeth of a rack 23 on
the end of the lever 3 (Figure 5) so that the block or squared part 24 is moved
backwards in the guide 9. In Figure 3 the suction pipe is shown when the back-
ward movement has been completed. The cam discs 2 and 10 are so constructed
that the working of the lever 3 together with the suction pipe 8 is as follows:-
Starting from the position of the lever 3 shown in dotted lines in Figure 2,

page_text: in which a sheet of paper has just been placed on the printing cylinder, the
lever 3 is moved back by means of the cam disc 2 as before described to the feed
table 100 until it is in the position shown in full lines, the suction pipe will then
lie in the foremost part of its guide and in this position will draw up a sheet
of paper. The lever 3 then remains a short time at rest because its roller 7
travels over a circular or concentric part of the cam disc 2, but the projection of
the cam disc 10 encounters the roller 11 at the moment when the suction pipe
has taken the sheet of paper and lifts the said roller 11, whereupon as already
described the suction pipe must be moved backwards with the lifted sheet of paper
on the pile of sheets of paper (Figure 6). This backward movement has for
its object to allow any sheet which may have been lifted up by adhesion to the
topmost sheet to be re-deposited on the pile. After the backward movement of
the suction pipe is completed, the roller 7 of the lever 3 comes off the circular part
of the cam disc 2 and on to the cam part and bears against this latter under the
impulse of the spring 5, thus moving the lever with the sheet of paper to the
printing cylinder, during which movement a finger 25 firmly mounted on
the spindle of the suction pipe and resting on a shaft 48 causes a rotation of the
suction pipe and a forward movement thereof on the rack 23, so that when the
suction pipe has reached the printing cylinder, it is again held in the foremost
part of its guide and can release the sheet of paper sucked up.
For this effect however the suction of the pipe must be adjusted, and this takes
place by means of a tap or valve arranged on a pipe 26 leading from a pump to
the suction pipe and operated by means of a cam disc 36, lever 33 and link 31, a
roller 35 arranged on the lever 33 bearing on the cam disc 36 under the impulse of
a spring 38 and thus causing the valve to be closed in order to stop the suction of
air at the moment when the paper is to be released.
During this movement of the lever 3 and the suction pipe 8, the feed table
must rise somewhat for the taking-off of the topmost sheet and then again descend.
It must further however assume a suitable height, changing in a manner to
correspond with the gradual removing of the sheets from the pile of paper and
the paper holder must also be lifted off the pile of paper. These functions are
effected as follows by means of cam disc 78 (Figure 2) or rather by cam disc 39
(Figure 3).
A roller 75 mounted on a lever 74 pivoted at 76 is pressed by means of a
spring 77 constantly on a cam disc 78, and by this means operates or moves a
link 73 and an elbow lever 69 rigidly attached to an arm 70 loosely mounted on
a spindle 135 and pivotally connected to said link, one arm of said elbow lever 69
being toothed and engaging in the teeth of a sector 66 keyed on the spindle 135
and maintained in said engagement by the pull exerted on the arm 70 by a
spring 94. The arm 79 lifting the feed table by means of a hinged rod 80 is also
keyed on the spindle 135, as is also an arm 67 with a counterweight 68. A
projection 71 is screwed on the frame of the press above the arm 70. When the
rod 73 is lifted up by the spring 77 pulling the roller 75 into the groove or cam
surface of the disc 78, the sector 66 and therefore the table 100 is lifted by means
of the elbow lever 69, but when the arm 70 encounters the projection 71, the rod 73
which extends somewhat further lifts the teeth of the elbow lever 69 out of those
of the sector of the table. In case the suction pipe does not yet encounter the
topmost sheet it is lifted now sufficiently far by means of the counterweights 68.
In the meantime the roller 75 has reached the lowest point of the disc 78 and from
this point the teeth of the sector and elbow lever will again engage and the table
be lowered.
Referring now to the paper holder 50, a lever 43 pivotally mounted at 41 on a
carrier 42 has on its outer arm a roller 40 which by means of a spring 57 is
constantly pressed on a cain. disc 39 (Figure 3) and operated by the
latter to turn by means of a link 45 and crank 47 the paper
holder 50 on the spindle 48 mounted on the support 51 and lifts the same
from the pile of paper at the moment the sheet of paper is drawn up by the suction

page_text: holes 55 of the pipe 56 (Figure 4). The above mentioned pipe 56 is eccentrically
arranged in the suction pipe and the latter has recesses 53 with the object of
affording the necessary space for the paper holder which is shaped correspondingly
to allow it to lift off the pile of paper, and also to ensure that the grippers
arranged on the printing cylinder for catching the sheet of paper shall not come in
contact with the suction pipe. Figure 4 shows a front elevation and cross sections
on the lines x, y―y and z-z of the suction pipe.
In order that the sheets of paper may be taken by the suction pipe always in
the same position, that is in order to obtain a thorough register when printing,
the said sheets are first placed straight by means of a so-called registering
device. This consists of front and side rules 54, 121 and 120 operated by means
of a cam disc 65 and a key 104 operated by a cam disc 82.
The roller 64 bearing on the cam disc 65, Figure 2, turns a lever 62 on its
fixed point of rotation 63, the rotation of which lever is conveyed by means of
a link 60 and crank 58 to a spindle 52 mounted at both sides in supports 51,
Figures 1 and 2, on which spindle is bolted a partition or the front stop of the
feed table 54 provided at the top with notches 59 for the purpose of receiving
the paper holder. The feed table 100 has projections 95, Figure 1, corresponding
to the notches 59 of the front stop or rule, which projections prevent the sheet of
paper becoming jammed between the front rule and the table plate. Two small
slide bars 126, Figures 2, 7, 8 and 9, are keyed on the link rod 60, and serve
for guiding a projection 127 of a double lever 125, which is pivotally mounted on
Each end of the double
a pin 130 of a bearing 124 arranged on the feed table.
lever is connected by means of a pin or hinge 128 and 129 respectively with a
link or rod 117 and 118 respectively. These rods move other rods 113 and 114
which are flexibly connected with them and which travel in bearings 116 115
and 124 which rods 113 & 114 serve for carrying two projections or carriers 122
and 123 which travel stiffened with the said rods in guide slots of the
table 100 and each carry a short side wall or side blocks 120 and 121.
The link 60 together with the slide bars 126 are moved by the cam 65, whilst
simultaneously the table with its projection 127 is lifted; the projection slides
along the bars, and this movement is transferred to the double lever 125 in such
a way that it turns or rotates on the pin 130 in the direction of the arrow 1,
Figure 7, or in the opposite direction. This rotation is conveyed by means of the
rods 117 and 118 to the rods 113 and 114 which must travel along their
guides 116, 115, 124, by which means the two side blocks 121 and 120 move
against one another in their guide slots 132 and act on the pile of paper lying
between them. The lifter 104, Figures 1, 2, 3 and 7 has an arm 103, which is
firmly keyed to a rod loosely that is to say revolubly mounted in a bearing
frame 107. This bearing frame 107 is mounted by means of a short stand 108
in such a way on a cross shaft 106 bolted to the two side frames of the press that
it may slide along this shaft 106 and thus carry the lifter or key 104 with it. A
short arm 101 is also screwed to the rod 102, which short arm is connected with a
rod 97 by means of a hinge or pin 99 and this latter rod 97 has a pin 111.somewhere
about its centre, which bolt may travel along the guide groove 112 of a second rod 98
loosely mounted on uprights or supports 108 of the bearing frame 107, the rod 98
being of rectangular section.
The rod 97 is connected by means of a second hinge or pin 96 with a short
arm 92 which is keyed firmly on the upper part of a vertical rod or shaft 91. This
shaft 91 is loose, that is to say revoluble on its axis and is mounted in projections
of the side frame and further connected below with a second short arm 90,
Figure 7, which by means of a hinge or pin 89 is connected with an arm 88 and
the latter with an elbow lever 86 revoluble on a pivot 83, which elbow lever at
its lower end carries a roller 85 constantly pressed against a,cam.disc.82 by means
of a spring 93.
The cam, disc 82 lifts the roller 85, by which means the rod 88 is pushed side-
the shaft 91 revolved on its axis and thereby the rod 97 also moved sideways.
ways,

page_text: By the movement of the latter, the rod 102 is revolved on its axis and the key or
lifter 104 moved downwards on to the pile of paper. During this movement the
pin 111 has traversed its guide groove 112 and causes the lateral movement of the
rod 98 and thus of the whole bearing frame 107 after the lifter rests firmly on the pile
of paper so that the topmost sheet of paper is pushed against the left side block
by means of the lifter 104 which is provided underneath with short blunted pins
or studs. The roller 85 has then traversed or passed the highest projection of the
disc 82, the lifter again rises from off the pile of paper and the whole apparatus
returns to its initial position.
By the arrangement of this registering device the sheets of paper are always
brought into precisely the same position and only after this has been done are
they drawn up by the suction tube and conveyed to the printing cylinder 49, from
whence when printed in the ordinary manner they reach the receiving table by
means of conveying bands 139 travelling over a band cylinder 138. The front
ledge or rule and the side ledges or rules as well as the cam discs operating the
paper lifters are so constructed that in consequence of the pushing or shifting
action of the above mentioned parts of the suction cylinder on the sheets of paper,
the latter are always drawn up in a position always adjusted to the front and side
ledges or blocks 54 and 121.
Another form of construction of the register device is shown in Figures 10
and 11. In this the front ledge or rule 54 remains unchanged but the two side
ones and the lifter are replaced as follows by other devices. Instead of the elbow
lever 86 previously employed, a simple arm 86, Figure 10, is arranged, which
arm is provided with a roller 85 and flexibly connected with a second rod or
bar 140. The rod or bar 140 is moved up and down in a guide 141 by means of
the cam disc 82 and this movement is conveyed to an elbow lever 142 flexibly
connected with the same and provided with a fixed point of rotation and from
this lever further to U-shaped iron 143 & 144 revolubly mounted on pins 145
and 146, to which U iron the side ledges or registers 120, 121 are rivetted, and
thus these latter are caused to describe a reciprocating movenient and in conse-
quence of this movement the pile of paper lying between the side rulers or
registers are adjusted for the registering printing. The cam disc 82 is so con-
structed that the sheets of paper before they are lifted by the suction cylinder
are first pushed in the direction of the arrow I, Figure 11, then in that of the
arrow II and finally in that of the arrow III, and only after these movements are
they lifted by the suction cylinder and reach thereby always in the same positions
situated to the front and side ledges or registers 54, 121, in order to be further
conveyed to the printing cylinder.
Figure 12 shows the suction device with the grippers 147 arranged thereon.
The grippers 147 serve for holding more securely the sheet of paper which has
been drawn up in case (as happens in many cases) the latter should strongly
adhere to the next sheet lying beneath it, and thus its removal by the suction pipe
would be too difficult. These grippers are arranged on a shaft 148 and are
approached to the suction cylinder by means of a spring 150 acting on a projec-
tion 149 keyed on the same shaft. When the suction pipe travels along its
guide slot 9, the projections 149 must follow, that is to say they are raised or
lowered according to the position of the suction pipe, both positions being shown
in Figure 12, one in dotted lines and one in full lines, and thereby the grippers 147
are laid on the suction pipe 55 or rather on the sheets of paper drawn up in the
meantime by the same and in consequence of the position of the suction pipe the
said sheets of paper are held fast until they are inserted in the printing cylinder.
The correct positon of the sheets of paper is thus always ensured.

page_text: Improvements in Mechanical Printing Presses.
I, DR. LUDWIG GERO, of the Pallas Druckerei Actien Gesellschaft, Budapest,
in the Kingdom of Hungary, Empire of Austria, Director, do hereby declare the
nature of this invention and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
-
This invention has for its object improvements in or relating to automatic
paper feeding devices for printing machines, the present improvements
being intended to allow of the more perfect operating of the separate components
(serving for feeding the paper in mechanical printing presses), and more particu-
larly the suction pipe and the feeding table, with the object of obtaining an
improved feed of the separate sheets of paper, so that mechanical presses provided
with the above improvements may register completely without the hand labour
hitherto employed for register printing.
In the drawings accompanying the Provisional Specification,
Figure 1 is a front view of a mechanical press showing only the feed table
and the printing cylinder with the feeding device and the mechanism for
operating it;
Figure 2 is a right hand side view;
Figure 3, a left hand side view of these parts of a mechanical press;
Figures 4-12 are details.
Various cam discs mounted on a shaft 1 driven by the main driving shaft
of the printing press serve for operating the devices for the rapid and registering
insertion of the sheets of paper. These will now be described as follows:-
lever.
on
A cam disc 2 (Figure 3) operates the levers 3 in such a way that the lever 3 which
is revoluble on a fixed point of rotation 4 and is always pressed by a spiral spring 5
with its small roller 7 arranged on its shorter arm 6 against the cam disc 2, must
move with its longer arm from the feed table to the printing cylinder and back.
This longer arm serves for holding the suction pipe 8 which sucks up the sheet to be
to and fro in a guide 9 the said
inserted, which pipe may move
as
This movement of the suction pipe 8 is effected follows by
means of an arrangement of levers and links mounted on the levers 3 and operated
by means of a cam disc 10; an elbow lever 12 pivotally mounted on an arm of
the lever 3 at the point 13 has a roller 11 on one of its arms, whilst its other
arm is coupled by means of a pin 14 to a link 15, which latter is connected in
turn by means of a pin 16 to an elbow lever 18 pivotally mounted at 17 on the
lever 3, the longer arm of this elbow lever 18 being in turn connected by means
of a pin 19 with a link 20. This link turns a crank arm 21 which is connected
to the suction pipe 8 and has a cogwheel 22 engaging in the teeth of a rack 23 on
the end of the lever 3 (Figure 5) so that the block or squared part 24 is moved
backwards in the guide 9. In Figure 3 the suction pipe is shown when the back-
ward movement has been completed. The sam discs 2 and 10 are so constructed
that the working of the lever 3 together with the suction pipe 8 is as follows:-
Starting from the position of the lever 3 shown in dotted lines in Figure 2,
in which a sheet of paper has just been placed on the printing cylinder, the
lever 3 is moved back by means of the cam disc 2 as before described to the feed
table 100 until it is in the position shown in full lines, the suction pipe will then
lie in the foremost part of its guide and in this position will draw up a sheet
of paper. The lever 3 then remains a short time at rest because its roller 7
travels over a circular or concentric part of the cam disc 2, but the projection of
the cam disc 10 encounters the roller 11 at the moment when the suction pipe

page_text: has taken the sheet of paper and lifts the said roller 11, whereupon as already
described the suction pipe must be moved backwards with the lifted sheet of paper
or the pile of sheets of paper (Figure 6). This backward movement has for
its object to allow any sheet which may have been lifted up by adhesion to the
topmost sheet to be re-deposited on the pile. After the backward movement of
the suction pipe is completed, the roller 7 of the lever 3 comes off the circular part
of the cam disc and on to the cam part and bears against this latter under the
impulse of the spring 5, thus moving the lever with the sheet of paper to the
printing cylinder, during which movement a finger 25 firmly mounted on
the spindle of the suction pipe and resting on a shaft 48 causes a rotation of the
suction pipe and a forward movement thereof on the rack 23, so that when the
suction pipe has reached the printing cylinder, it is again held in the foremost
part of its guide and can release the sheet of paper sucked up.
For this effect however the suction of the pipe must be adjusted, and this takes
place by means of a tap or valve arranged on a pipe 26 leading from a pump to
the suction pipe and operated by means of a cam disc 36 lever 33 and link 31, a
roller 35 arranged on the lever 33 bearing on the cam disc.36 under the impulse of
a spring 38 and thus causing the valve to be closed in order to stop the suction of
air at the moment when the paper is to be released.
During this movement of the lever 3 and the suction pipe 8, the feed table
must rise somewhat for the taking-off of the topmost sheet and then again descend.
It must further however assume a suitable height, changing in a manner to
correspond with the gradual removing of the sheets from the pile of paper and
the paper holder must also be lifted off the pile of paper. These functions are
effected as follows by means of a cam disc 78 (Figure 2) or cam disc 39 (Figure 3).
A roller 75 mounted on a lever 74 pivoted at 76 is pressed by means of a
spring 77 constantly on a cam disc 78, and by this means operates or moves a
link 73 and an elbow lever 69 rigidly attached to an arm 70 loosely mounted on
a spindle 135 and pivotally connected to said link, one arm of said elbow lever 69
being toothed and engaging in the teeth of a sector 66 keyed on the spindle 135
and maintained in said engagement by the pull exerted on the arm 70 by a
spring 94. The arm 79 lifting the feed table by means of a hinged rod 80 is also
keyed on the spindle 135, as is also an arm 67 with a counterweight 68. A
projection 71 is screwed on the frame of the press above the arm 70. When the
rod 73 is lifted up by the spring 77 pulling the roller 75 into the groove or cam
surface of the disc 78, the sector 66 and therefore the table 100 is lifted by means
of the elbow lever 69, but when the arm 70 encounters the projection 71, the rod 73
which extends somewhat further lifts the teeth of the elbow lever 69 out of those
of the sector of the table. In case the suction pipe does not yet encounter the
topmost sheet it is lifted mow sufficiently far by means of the counterweights 68
In the meantime the roller 75 has reached the lowest point of the disc 78.and from
this point the teeth of the sector and elbow lever will again engage and the table
be lowered.
Referring now to the paper holder 50, a lever 43 pivotally mounted at-41.on a
carrier 42 has on its outer arm a roller 40 which by means of a spring 57 is
constantly pressed on a .cam disc 39 (Figure 3) and operated by the
latter to turn by means of a link 45 and crank 47 the paper
holder 50 on the spindle 48 mounted on the support 51 and lifts the same
from the pile of paper at the moment the sheet of paper is.drawn up by the suction
holes 55 of the pipe 56 (Figure 4). The above mentioned pipe 56 is eccentrically
arranged in the suction pipe and the latter has recesses 53 with the object of
affording the necessary space for the paper holder which is shaped correspondingly
to allow it to lift off the pile of paper, and also to ensure that the grippers
arranged on the printing cylinder for catching the sheet of paper shall not come in
contact with the suction pipe. Figure 4 shows a front elevation and cross sections
on the lines ar, yy.and 2-2 of the -suction pipe.
In order that the sheets of paper may be taken by the suction pipe always in

page_text: the same position, that is in order to obtain a thorough register when printing,
the said sheets are first placed straight by means of a so-called registering
device. This consists of front and side rules 54, 121 and 120 operated by means
of a cam disc 65 and a presser foot 104 operated by a cam disc 82.
The roller 64 bearing on the cam disc 65, Figure 2, turns a lever 62 on its
fixed point of rotation 63, the rotation of which lever is conveyed by means of
a link 60 and crank 58 to a spindle 52 mounted at both sides in supports 51,
Figures 1 and 2, on which spindle is bolted a partition or the front stop of the
feed table 54 provided at the top with notches 59 for the purpose of receiving
the paper holder. The feed table 100 has projections 95, Figure 1, corresponding
to the notches 59 of the front stop or rule, which projections prevent the sheet of
paper becoming jammed between the front rule and the table plate. Two small
slide bars 126, Figures 2, 7, 8 and 9, are keyed on the link rod 60, and serve
for guiding a projection 127 of a double lever 125, which pivotally mounted on
a pin 130 of a bearing 124 arranged on the feed table. Each end of the double
lever is connected by means of a pin or hinge 128 and 129 respectively, with a
link or rod 117 and 118 respectively. These rods move other rods 113 and 114
which are flexibly connected with them and which travel in bearings 116, 115
and 124 which rods .113 and 114 serve for carrying two projections or carriers 122
and 123 which travel stiffened with the said rods in guide slots of the
table 100 and each carry a short side wall or side blocks 120 and 121.
The link 60 together with the slide bars 126 are moved by the cam 65, whilst
simultaneously the table with the projection 127 (Fig. 8) is lifted; the projection
slides along the bars, and this movement is transferred to the double lever 125 in
such a way that it turns or rotates on the pin 130 in the direction of the arrow 1,
Figure 7, or in the opposite direction. This rotation is conveyed by means of the
rods 117 and 118 to the rods 113 and 114 which must travel along their
guides 116, 115, 124, by which means the two side blocks 121 and 120 move
towards one another in their guide slots 132 and act on the pile of paper lying
between them. The presser foot 104, Figures 1, 2, 3 and 7 has an arm 103, which
is firmly keyed to a rod 102 loosely that is to say revolubly mounted in a bearing
frame 107. This bearing frame 107 is mounted by means of a short stand 198
that
in such a way on a cross shaft 106 bolted to the two side frames of the
it may slide along this shaft 106 and thus carry the presser foot 104 with it. A
short arm 101 is also screwed to the rod 102, which short arm is connected with a
rod 97 by means of a hinge or pin 99 and this latter rod 97 has a bolt 112 some-
where about its centre, which bolt may travel along the guide groove 111 of a
second rod 98 loosely mounted on uprights of the shaft 108 of the bearing
frame 107, the rod 98 being of rectangular section.
press
The rod 97 is connected by means of a second hinge or pin 96 with a short
arm 92 which is keyed firmly on the upper part of a vertical rod or shaft 91. This
shaft 91 is loose that is to say revoluble on its axis and is mounted in projections
of the side frame and further connected below with a second short arm 90,
Figure 7, which by means of a hinge or pin 89 is connected with an arm 88
and the latter with an elbow lever 86 revoluble on a pivot 83, which elbow lever
at its lower end carries a roller 85 constantly pressed against a cam disc 82 by
means of a spring 93.
The cam disc 82 lifts the roller 85, by which means the rod 88 is pushed
sideways, the shaft 91 revolved on its axis and thereby the rod 97 also moved
sideways. By the movement of the latter, the rod 102 is revolved on its axis and
the presser foot 104 moved downwards on to the pile of paper. During this
movement the pin 111 has traversed its guide groove 112 and causes the lateral
movement of the rod 98 and thus of the whole bearing frame 107 after the lifter
rests firmly on the pile of paper so that the topmost sheet of paper is pushed against
the left side block by means of the lifter 104 which is provided underneath with
short blunted pins or studs. The roller 85 has then traversed or passed the

page_text: .
highest projection of the disc 82, the lifter again rises from off the pile of paper
and the whole apparatus returns to its initial position.
By the arrangement of this registering device the sheets of paper are always
brought into precisely the same position and only after this has been done are
they drawn up by the suction tube and conveyed to the printing cylinder 49, from
whence when printed in the ordinary manner they reach the receiving table by
means of conveying bands 139 travelling over a band cylinder 138. The front
ledge or rule and the side ledges or rules as well as the cam discs operating the
paper lifters are so constructed that the sheets of paper are always drawn up in a
position always adjusted to the front and side ledges or blocks 54 and 121.
Another form of construction of the register device is shown in Figures 10
and 11. In this the front ledge or rule 54 remains unchanged but the two side
ones and the lifter are replaced as follows by other devices. Instead of the elbow
lever 86 previously employed, a simple arm 80, Figure 10, is arranged, which
arm is provided with a roller 85 and flexibly connected with a second rod or
bar 140. The rod or bar 140 is moved up and down in a guide 141 by means of
the cam disc 82 and this movement is conveyed to an elbow lever 142 flexibly
connected with the same and provided with a fixed point of rotation and from
this lever further two U-shaped irons 143 and 144 revolubly mounted on pins 145
and 146, to which U-irons the side ledges or registers 120, 121 are rivetted, and
thus these latter are caused to describe a reciprocating movement and in conse-
quence of this movement the pile of paper lying between the side rulers or
registers are adjusted for the registering printing. The cam disc 82 is so con-
structed that the sheets of paper before they are lifted by the suction cylinder
are first pushed in the direction of the arrow I, Figure 11, then in that of the
arrow II and finally in that of the arrow III, and only after these movements are
they lifted by the suction cylinder and reach thereby always in the same positions
situated to the front and side ledges or registers 54, 121, in order to be further
conveyed to the printing cylinder.
Figure 12 shows the suction device with the grippers 147 arranged thereon.
The grippers 147 serve for holding more securely the sheet of paper which has
been drawn up in case (as happens in many cases) the latter should strongly
adhere to the next sheet lying beneath it, and thus its removal by the suction pipe
would be too difficult. These grippers are arranged on a shaft 148 and are
approached to the suction cylinder by means of a spring 150 acting on a projec
tion 149 keyed on the same shaft. When the suction pipe travels along its
guide slot 9, the projections 149 must follow, that is to say they are raised or
lowered according to the position of the suction pipe, both positions being shown
in Figure 12, one in dotted lines and one in full lines, and thereby the grippers 147-
are laid on the suction pipe 55 or rather on the sheets of paper drawn up in the
meantime by the same and in consequence of the position of the suction pipe the
said sheets of paper are held fast until they are inserted in the printing cylinder.
The correct positon of the sheets of paper is thus always ensured.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1. The improvements in automatic paper feeding devices of the kind described
for printing machines, characterised by the rolling back of the suction cylinder
on the sheets of paper being effected by lever and link gear (122221) to cause the
suction cylinder to travel over a longer course; and by the automatic raising and
lowering of the feed table for the purpose of lifting off or sucking up the sheets of
paper being effected by means of a toothed sector (66) and by the sheets of paper
being moved by the rules (54, 120 and 121) and a key (104) for the purpose of
obtaining a registering printing, the paper being always sucked up by the suction
cylinder in the same positions, substantially as herein before described.
2. The improvement in automatic paper feeding devices of the kind described

page_text: characterised by the rolling back on the sheets of paper of the suction pipe which
is carried on a cogwheel (22) engaging in the teeth of a rack (23), being effected
by a cam disc (10) by means of an elbow lever (12) link (15) elbow lever (18)
and link (20) whilst the opposite that is to say forward movement of the suction
pipe is produced by a finger (25) resting on a fixed shaft (48) during the movement
of the suction pipe from the feed table to the printing cylinder, substantially as.
herein before described.
3. The improvement in automatic paper feeding devices of the kind described
characterised by the feed table being moved up and down by means of a toothed
sector (66) and an elbow lever (69) operated by a cam disc (78) said elbow lever
after each upward movement being disengaged from the teeth of the sector with
the object of always bringing the uppermost sheet of paper in contact with the
suction pipe in consequence of the table being raised by a counter weight (68) on
the disengagement of the teeth of the sector substantially as hereinbefore described.
4. In automatic paper feeding devices of the kind described, a form of con-
struction relating to the registering device, characterised by the front rule (54)
which is moved from and to the feed table by a cam disc (65) by means of lever and
link gear (62, 60) and the side rules (120, 121) which are also operated by said cam
disc (65) and travel in guide grooves of the table, being moved towards one another
by means of a double lever (125) guided by slide bars (126) on the link (60);
and further characterised by a key (104) being operated by means of a cam
disc (82) and a vertical spindle (91) revolved by levers (86, 88), and rods (97, 98);
the said cam discs being so constructed that in consequence of the combined
action of the parts the sheets of paper before being sucked up are always brought
into the same position that is to say fitted to the front and side rules (54, 121)
substantially as hereinbefore described.
5. A modification of the registering device hereinbefore described characterised
by the side rules (120, 121) which are rivetted to U-irons (143, 144) pivotally
mounted on pins (145, 146), and are operated by a cam disc (82) being arranged
to execute the movements indicated by the arrows I, II, III, by means of a
rod (140) and elbow lever (142), with the object of bringing the sheets of paper,
before being drawn up by the suction cylinder, always into the same position
that is fitted to the front and side rules (54, 121) substantially as hereinbefore
described.
6. In automatic paper feeding devices of the kind described; a suction pipe
provided with grippers (147) which are operated by projections (149) and
springs (150) with the object of holding fast or retaining the sheet of paper drawn
up by the suction pipe after the latter has travelled back, whereby said sheet is
conveyed with more certainty to the printing roller, substantially as herein before
described.