Improvements in or relating to Automatic Paper-feeding Devices for Printing Presses.
Year: 1897

page_text: PROVIDIUNAL SPECIFICATION,
Improvements in or relating to Automatic Paper-feeding Devices for
Printing Presses.
I, LOUIS GERO, Manager of Printing Works, of Kálmán-utza No. 13, Budapesth;
Hungary, do hereby declare the nature of this invention to be as follows:-
My invention relates to cylinder-printing presses and has for its object the con-
struction of an improved mechanism or device for feeding the sheets to be printed
to the impression cylinder.
Most of the automatic paper feeding devices heretofore known and used have
proved a failure either because they were too complicated and therefore easily
deranged, or because the sheet next to the top one to be fed to the impression
cylinder was by the adhesion between the two sheets, carried along a greater or
less distance towards the cylinder, whereby frequent stoppages were caused.
By the improved automatic feeding device, to be hereinafter described which is
very simple in construction and which may be attached to any existing cylinder
printing press the above mentioned inconveniences are intended to be avoided.
The essential features of my improved device consist firstly in the peculiar dis-
position and construction of the feeding table; secondly in the peculiar construc-
tion of the suction pipe which is movable upon an eccentric axis and which is pro-
vided with recesses or bends for the paper pile holders and for the grippers of the
impression cylinder; thirdly in the peculiar manner in which this suction pipe is
moved in order to prevent the carrying along of several sheets instead of one.
The feed paper is placed quite close to the impression cylinder so that the dis-
tance which the sheets have to traverse become as short as possible. This table is
adjustable and guided by toggles, or some other suitable device which will permit
of its being raised automatically by a weighted lever in the same measure as sheets
are being taken from the top of the paper pile, so that the point of the latter at
which the top sheet is subjected to the suction of the pipe will always be kept at
a uniform level. The entire pile of paper is, up to the last sheet, held upon the
table in such manner that none of the sheets can shift or become displaced during
work. For this purpose the table is provided at either side with high angles or
sides which are laterally adjustable to take any size of paper. At the rear of the
paper pile are placed hooks for holding the latter in position. These hooks are
attached to a point outside of the table and permit a free up and down movement
of the latter, while they are also adjustable towards and from the impression.
cylinder according to the size of the sheets used. At the forward edge of the
table, facing the impression cylinder, there are also disposed hooks for holding the
pile. These hooks are connected with levers, which are operated by a cam so that
the hooks will be alternately swung away from the forward edge of the paper pile,
and again brought to bear against it. The suction pipe is eccentrically journalled
in an oblong frame at either end. These two frames are attached to one arm of a
bellcrank lever to the other arm of which is connected a rod that is operated by
a cam in such manner as to swing the frames with the suction pipe from the paper

page_text: pile to the impression cylinder and back again. The suction pipe is provided with
a suitable number of recesses or bends which correspond with the grippers of the
impression cylinder. In some of these bends are also situated the holders at
the front edge of the paper pile. When the suction pipe is swung back upon the
paper pile, it rests upon the topmost sheet in such manner that its suction holes are
situated at the front edge of the paper. Up to the moment when the suction pipe
arrives in this position the topmost sheet is still held down by the hook. Immedi-
ately after the suction pipe has touched the topmost sheet in the described manner,
the air is exhausted from the pipe through its hose whereby this sheet is drawn
against the suction pipe. At the same instant when this takes place the hooks are
removed from the paper pile and, by a cam a cog segment is swung forward, which
segment meshes with a cog wheel upon the suction pipe. At either end of the
suction pipe the eccentric axis thereof carries a fast cog wheel which meshes with
a rack attached at the side of the suction pipe frame. The cog segment as it
swings forward again and rotates the cog wheel, turns the suction pipe in its bear-
ings and rolls it a short distance to the rearward upon the racks. The topmost
sheet which is still held to the pipe by suction, is by this rearward rotation of the
pipe partly wound upon this latter and, as this pipe rests for a short time in this
position, the underlying sheets, which may have been lifted together with the top
one in consequence of the adhesion, have time to drop back upon the pile. When
this has taken place, which only takes a very short space of time, the hooks swing
back against the pile and hold down the sheets until the next one is to be fed to
the cylinder. As soon as the hooks have returned to the pile the levers swing the
suction pipe together with the sheet adhering thereto, forward upon the impression
cylinder. The rear hooks bearing but slightly upon the rear part of the paper,
the sheet can easily be drawn from underneath them. Upon the way to the
impression cylinder a crank upon the eccentric axis of the suction pipe strikes and
turns around a stationary tappet, thereby causing the pipe to revolve in its bear-
ings. As the cog wheels upon the axis of the suction pipe roll upon the racks
back again to the forward end of the frame, the forward edge of the sheet which
is still adhering to the suction pipe is thus brought to the lowest point of the
latter and upon the impression cylinder. Almost simultaneously herewith the
grippers of the impression cylinder reach their top position and meet the edge of
the sheet. Now the grippers close down upon the sheet and hold it fast to the
impression cylinder in the customary manner. Simultaneously with the closing
down of the grippers a threeway cock is operated by a cam so as to permit the
atmospheric air to enter at by the hose into the suction pipe. The sheet is thereby
instantly released from the suction pipe and may now be carried along around the
impression cylinder.
From the foregoing will be seen that by partly winding the sheet adhering to
the suction pipe around the latter and by arresting the pipe upon the paper pile
in this position until the other sheets adhering to the topmost one have fallen
back upon the pile and are held down again by the hooks, a feeding to the impres-
sion cylinder of more sheets than one at a time is perfectly prevented.
BOULT & WADE,
Agents for the Applicant.
Dated this zom uаy o pro 1001.
BOULT & WADE,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in or relating to Automatic Paper-feeding Devices for
Printing Presses.
I, LOUIS GERO, Manager of Printing Works, of Kalman-utcza No. 13, Buda-
pesth, in Hungary, do hereby declare the nature of this invention and in what
Improvements in or relating to Automatic Paper-feeding Devices for
Printing Presses.
I, LOUIS GERO, Manager of Printing Works, of Kalman-utcza No. 13, Buda-
pesth, in Hungary, do hereby declare the nature of this invention and in what

page_text: manner the same is to be performed, to be particularly described and ascertained
in and by the following statement:
My invention relates to cylinder-printing presses, and has for its object the con-
struction of an improved mechanism or device for feeding the sheets to be printed
to the impression cylinder.
Most of the automatic paper feeding devices heretofore known and used have
proved a failure either because they were too complicated and therefore easily
deranged, or because the sheet next to the top one to be fed to the impression
cylinder was, by reason of the adhesion between the two sheets, carried along a
greater or less distance towards the cylinder, whereby frequent stoppages were
caused.
By the improved automatic feeding device, to be hereinafter described, which is
very simple in construction and which may be attached to any existing cylinder
printing press, the above mentioned inconveniences are intended to be avoided.
In the annexed drawing, in which similar letters of reference indicate corres-
ponding parts,
Figure 1 shows the automatic feeding device in side elevation,
Figure 2 is a plan view of the device, partly in section, and Figure 3 shows a
detail view of the feeding device.
The essential features of my improved device consist firstly in the peculiar dis-
position and construction of the feeding table; secondly, in the peculiar con-
struction of the suction pipe which is movable upon an eccentric axis and which
is provided with recesses or bends for the paper-pile holders and for the grippers
of the impression cylinder; thirdly, in the peculiar manner in which this suction
pipe is moved in order to prevent the carrying along of several sheets instead of
one.
This
The feed table a is 'placed quite close to the impression cylinder so that the
distance which the sheets have to traverse becomes as short as possible.
table a is adjustable and guided by toggles d d or some other suitable device which
will permit of its being raised automatically by a weighted lever e to the same
so that the
degree as sheets are being taken from the top of the paper-pile s
point f of the latter at which the top sheet is subjected to the suction of the pipe k
will always be kept at a uniform level. The entire pile of paper is, up to the last
sheet, held upon the table a in such manner that none of the sheets can shift or
become displaced during work. For this purpose the table is provided at either
side with high angles or sides which are laterally adjustable to take any size of
paper. At the rear of the paper-piles are placed hooks or catches for holding
the latter in position. These hooks are attached to a point outside of the table and
permit a free up and down movement of the latter, while they are also adjustable
towards and from the impression cylinder according to the size of the sheets used.
At the forward edge of the table, facing the impressing cylinder there are also dis-
These hooks i are connected with
posed hooks or catches i for holding the pile s.
levers which are operated by a cam 7 so that the hooks i will be alternately
swung away from the forward edge of the paper pile into the position indicated
by dotted lines in Figure 1 and again brought to bear against it. The suction
These two
pipe is eccentrically journalled in an oblong frame at either end.
frames are attached to one arm of a bell crank lever m to the other arm of which
is connected a rod n that is operated by a cam n¹ in such manner as to swing the
frames with the suction pipe k from the paper pile to the impression cylinder and
back again. The suction pine k is provided with a suitable number of recesses or
bends o which correspond with the grippers p of the impression cylinder. In some
of these bends o are also situated the holders at the front edge of the paper pile.
When the suction pipe is swung back upon the paper pile, it rests upon the top-
most sheet in such manner that its suction holes are situated at the front edge of
the paper, that is at the point marked f in Figure 1, of the drawing. This posi-
tion is indicated in dotted lines in the same figure. Up to the moment when
the suction pipe arrives in this position the topmost sheet is still held down by the

page_text: hook . Immediately after the suction pipe has touched the topmost sheet in the
described manner, the air is exhausted from the pipe k through its tube q whereby
this sheet is drawn against the suction pipe. At the same instant when this takes
place the hooks i are removed from the paper pile, and, by a cam ra cog segment t
is swung forward, in the direction of the arrow, which segment meshes with a cog
wheel, upon the suction pipe. At either end of the suction pipe the eccentric
axis thereof carries a fast cog wheel u which meshes with a rack uº attached at
the side of the frame l. The cog segment t as it swings forward again and rotates
the cog wheel to turns the suction pipe k in its bearings and rotates it a short dis-
tance to the rearward upon the racks u° indicated in Figure 3. The topmost
sheet, which is still held to the pipe k by suction, is by this rearward rotation of
the pipe partly wound upon this latter, and, as this pipe rests for a short time in
this position, the underlying sheets, which may have been lifted together with the
top one in consequence of the adhesion, have time to drop back upon the pile.
When this has taken place, which only takes a very short space of time, the
hooks i swing back against the pile and hold down the sheets until the next one
is to be fed to the cylinder. As soon as the hooks i have returned to the pile, the
levers m swing the suction pipe k together with the sheet adhering thereto, forward
upon the impression cylinder. The rear hooks h bearing but lightly upon the rear
part of the paper, the sheet can easily be drawn from underneath them. Upon
the way to the impression cylinder a crank v upon the eccentric axis of the suction
pipe k strikes and turns upon a stationary tappet w thereby causing the pipe k to
revolve in its bearings. As the cog wheels u upon the axis of the suction pipe roll
upon the racks back again to the forward end of the frame 1, the forward edge
of the sheet, which is still adhering to the suction pipe is thus brought to the
lowest point of the latter and upon the impression cylinder. Almost simultane-
ously herewith the grippers of the impression cylinder reach their top position and
meet the edge of the sheet. Then the grippers p close down upon the sheet and
hold it fast to the impression cylinder in the customary manner. Simultaneously
with the closing down of the grippers a three-way cock x is operated by a cam y
so as to permit atmospheric air to enter at z and pass through the tube q into the
suction pipe k. The sheet is thereby instantly released from the suction pipe
and may now be carried along around the impression cylinder.
From the foregoing will be seen that by partly winding the sheet adhering to
the suction pipe around the latter and by arresting the pipe upon the paper pile
in this position until the other sheets adhering to the topmost one have fallen back
upon the pile and are held down again by the hooks a feeding to the impression
cylinder of more sheets than one at a time is perfectly prevented.
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. In automatic paper feeding devices for cylinder printing presses the com-
bination with the impression cylinder having suitable means for gripping the
sheets as they are fed, of a table placed close to the impression cylinder and adapted
to hold the pile of sheets in position, means for guiding and automatically raising
this table so as to keep the top of the paper pile at a permanent level, an eccen-
trically rotatable suction pipe adapted to be swung, together with its bearings,
from the paper pile to the impression cylinder and back, and of means for impart-
ing to the said suction pipe when resting upon the paper pile, a partial revolution
first away from, and then towards the front edge of the sheets; substantially as
described.
2. In automatic paper feeding devices for cylinder printing presses the com-
bination with the impression cylinder having suitable means for gripping the
sheets as they are fed, of an adjustable table an eccentrically rotatable suction
pipe adapted to be swung, together with its bearings, from the paper pile to the
impression cylinder and back, of means for imparting to the said suction pipe

page_text: when resting upon the paper pile, a partial revolution first away from, and then
towards the front edge of the sheets, and of swinging hooks situated at the front
edge of the paper pile and adapted to alternately hold and release the sheets of the
paper pile; substantially as and for the purpose described.
3. In automatic paper feeding devices of the kind described, the combination
with an eccentrically rotatable suction pipe as k journalled in frames of a lever m
attached to the said frames, a rod n coupled to the lever m and a cam adapted to
impart a reciprocating, swinging movement to the frames and the suction pipe
and to produce a short stoppage in this movement when the suction pipe is resting
upon the paper pile; substantially as and for the purpose described.
4. In automatic paper feeding devices of the kind described the combination
with an eccentrically rotatable suction pipe as k journalled in oblong frames and
with means of imparting to these frames and to the suction pipe a reciprocating,
swinging movement interrupted by a short stop, or toothed wheels to and u upon
the eccentric axes of the suction pipe of racks upon the frames for the wheels u
to engage with, and of cog segments adapted to mesh with and operate the cog
wheels to substantially as and for the purpose described.
5. In automatic paper feeding devices of the kind described, the combination
with an eccentrically rotatable suction pipe as k journalled in oblong frames and
with means for imparting to these frames and to the suction pipe a reciprocating,
swinging movement interrupted by a short stop, of cog wheels to and upon the
eccentric axis of the suction pipe of racks u° upon the frames for the wheels u to
engage with, of cog segments t adapted to mesh with and operate the cog wheels to
and of a crank v also fixed upon the eccentric axis of the suction pipe and adapted
to operate against a tappet w substantially as and for the purpose described.
6. In automatic paper feeding devices of the kind described the combination with
the automatically adjustable table of hooks adjustably attached at the rear of said
table at a point outside thereof, and of laterally adjustable angle-pieces 9 at the
sides of said table; substantially as and for the purpose described.
7. The combination and arrangement of parts constituting the complete auto-
matic paper feeding device, substantially as described and illustrated in the accom-
panying drawings.
Dated this 7th day of December 1807
BOULT & WADE,
Agents for the Applicant.