Improvements in High Speed Printing Machines.
Year: 1899

page_text: Date of Application, 1st Aug., 1899
Complete Specification Left, 30th May, 1900-Accepted, 27th Oct.
1900
Improvements in High Speed Printing Machines.
I, PETER DVORAK, of 21, Bermogasse, Vienna VIII, in the Empire of Austria,
Printer, do hereby declare the nature of this invention to be as follows:-
This invention relates to high speed printing machines of that class in which
the feeding of the sheets is effected automatically by an
Machines of this class as hitherto constructed require very complicated mechan-
adhesive feeder.
ism owing to the feed table, upon which the sheets are piled, having to be adjusted
in position to compensate for the reduction of the pile.
By my invention I am enabled to dispense with the continuous re-adjustment
of the feed table.
The improved arrangement consists broadly of a picker up bar moving in a guide
groove ending in a vertical straight path near the paper pile, such picker up
bar being operated through the intervention of a
arranged as to control the movement of the said bar all but in the straight portion
rocking shaft and lever so
of the groove and so enable the bar to be deposited upon the pile of varying
heights without hindrance from the never varying angular motion of the operat-
ing lever.
My invention will be clearly understood by the accompanying description:
According to this invention I fix at both ends of the printing cylinder, at each
side of the frame strong cheeks, in which is mounted a shaft adapted to receive
a rocking motion from any convenient reciprocating mechanism forming part
of the machine, such as for example from the ink roller through the intervention
of chain wheels.
The adhesive feed or picker-up bar may be either shaped like a flat bar or
may be a roller and is at certain parts provided with an adhesive substance,
preferably the well known mixture of gelatine and glycerine. This bar is pro-
ided with eccentrically disposed prismatic portions, which enter slots in the
heeks and which cause the bar by gravity to always hang with its adhesive parts
lownwards. The slots are formed with a straight portion preferably vertical
nd extending to a point, concentric with the shaft and finishing with an out-
ardly curved portion to facilitate the accurately feeding of the sheets for print-
ng. Upon this shaft are seated loosely two levers 16 having slotted ends in
hich engage the cylindrical end studs of the picker up bar.
f each lever there is provided a spring carrying a pin which latter passes through
On the inner side
hole in the lever but is normally prevented from projecting from the outer
de of the lever by its spring which tends to pull it inwards.
Outside the levers are other levers, fast on the shaft, which impart a recipro-
ting motion to the first levers and thereby to the picker up bar, by moving the
me along in the one direction by the action of the cylindrical end studs and
the other direction by means of spring controlled pins. Curved face cams
ncentric with the shaft and forming an inclined path projecting from the outer
les of the cheeks, act upon the pins to engage or disengage them from the
cond lever as may be required.

page_text: The sheets for printing are piled upon the fixed table where they are retained
between the front abutting board and stops placed at the sides and rear thereof.
The action of the improved arrangement is as follows:-
The sheet is presented to the grippers by which such sheet is taken up and
held during printing. During the printing the feed or picker up bar is moved
towards the right owing to the retrograde movement of the inking roller.
The rotation of the shaft causes the second levers to oscillate and these levers
in turn actuate the slotted or first levers through the intervention of the pin
operated by the cam with the result that the feed bar also moves.
When the slotted levers are on the right of a vertical passing through the shaft
the pins are released by the action of their springs from the cam and thereupon
retire inward. This allows the second lever to always perform a uniform motion
while the first levers together with the feed bar only move as far as the pile
of paper will allow. The end of the slot is vertical and in this manner the
sheets from the pile are necessarily picked up exactly at the same point from
its front edge providing the sheets are placed against an abutting bar. If desired
however the vertical portion of the slot may be replaced by an inclined or even
a curved portion but in such case the abutting bar must be accordingly formed
or arranged so as to enable the sheets to be picked up all the same point from
the front edge.
As soon as the feeder has taken hold of the upper most sheet from the pile
by means of its adhesive surfaces, the motion of the mechanism is reversed, the
shaft causes the second levers to strike against the cylindrical end studs of the
feed bar and then move the first levers and feed bar towards the printing cylinder,
Before the first levers arrive in the vertical position the pins are moved outwards
by the inclined concentric cam so as to prevent the feed bar suddenly falling for-
ward and also to form the means for returning the feed bar into its position upon
the pile. By causing the prismatical portion to engage in the slot the possibility
of the feed bar shaking on arriving at one or other end of its travel is effec-
tually excluded.
In a slightly modified arrangement the first and second levers are replaced by
hook-shaped levers keyed at each side of the machine upon the shaft and so
arranged as to engage the cylindrical end studs of the feed bar and thus remove
the latter to and fro in the slot. This lever disengages from the feed bar
directly this latter comes to rest upon the paper pile whereupon the lever along
continues its downward motion. In all other positions the said hooked lever
controls the fed bar and thereby constraints the latter to participate in its motion
except when in the right hand end position. This, is effected by having the vertical
portion of the slot nearer the shaft than the other portions and by cutting away
the side of the hooked lever so as to enable the feed bar to escape therefrom.
The feed bar consists of a tubular portion in the interior of which is fixed a
bar which carries the tube and which forms the prismatic eccentric ends, for
guiding the bar in the slot. In the tube is a second bar adapted to be moved
up and down and advantageously provided with projections which pass through
holes in the said tube.
In this bar are screwed hollow screws which pass with their smooth shanks
through the bar. These screws are filled at their lower portion with adhesive
substance and are fitted at the upper end with a screw having an enlarged end.
The vertical lift of the bar can be adjusted to any desired extent by suitable
screws.
The object of this arrangement will be clear from the following.
The hollow screws can be adjusted by screwing in or out in the tube so as to
suit various thick or finer sorts of paper. For thick, heavy paper more screws
are placed in an operative position than for thin papers as it will be obvious
that more lifting power will be required for the former as compared with the
latter. The adhesive material must be of such a nature as not to take up small
chips or fibres of paper as otherwise it will lose its adhesive power very soon.

page_text: h
should not adhere so much as to leave more than a hardly visible
mark upon the sheet after being taken off. The wearing-off of the adhesive
substance can be compensated little by little in screwing the screw having the
enlarged end further into the hollow screw.
The vertical motion of the bar enables the sheet to be separated from the
feeder without damaging the paper.
levers which normally are kept at a certain distance from the printing cylinder
To this end a transverse shaft carries
by a lever having a roller which bears upon the surface of the cylinder and at
each revolution enters a recess therein. This occurs just at the moment when the
0 feeder presents the sheet to the grippers thereby causing the levers on the trans-
verse shaft to descend and lower the projections of the bar.
While the grippers fasten down upon the sheet, the roller retires from the
recess in the cylinder surface thus raising the levers on the transverse shaft which
in turn lift the bar and with it the hollow screws causing them to enter the
tube which at that moment is still kept stationary. By thus withdrawing the
screws into the tube the paper sheets become separated from the adhesive sub-
stance of the said screws without the slightest damage being done even to the
finest paper.
The arrangement for adjusting and lifting the top sheet of the pile comprises
a roller disposed at right angles to the length of the sheets and coupled with a
vertically movable rail or bar located at the side of the front board of the feed
table. This is raised first to allow of the top sheet being adjusted forwardly
against the front board, and again to allow of such sheet being taken off the
pile. The said roller reposes upon the paper pile and is made of material produc-
ing friction, such as caoutchouc, rubber or the like. It is mounted in vertical
bars, loosely held in guides.
against which levers act when operated by their cams or wipers. The roller is
The bars are fitted with adjustable tappets
connected by a cord, strap or the like running over grooved rollers, to a rail or
bar and so operates the same.
roller and this latter is furnished with a lever connected to a presser rod. This
The cords are fixed to adjustable rings on the
said rod is carried in a swivelling bearing and is actuated by a cam segment fast
on a chain wheel. spring is fastened by its ends to the rod and swivelling
respectively and tends to draw the rod towards the left and keeps its end applied
to the cam, or at other times draws a projection against the bearing.
The action is as follows:
If the feed bar be moved in the direction indicated by the arrow the cam
trikes against the rod and moves it to the right thereby causing the lever arm
o turn the roller. The roller by friction moves the top sheet on the pile forward
ausing it to adjust itself against the front board and the buckle up slightly. By
hus adjusting each sheet they will be picked up by the feeder at a uniform
istance from their front edge while at the same time the buckling up by the
oller ensures their being readily detached from the other sheets. The rail or bar
lowered upon the paper and prevents the front edge of the sheet curling up
rough the action of the roller.
Meanwhile the feeder is brought into contact with the top sheet which then
icks to the adhesive substance of the hollow screws and at the same time the
ms or wiper operate the levers and cause these latter to act upon the tappets
d so lift the rods together with the roller as well as the rail or bar. Thus the
sheet is now free to be removed by the feeder.
At the return motion of the shaft the cam releases the rod and allows a spring
draw it towards the left until the before mentioned projection comes against
e swivelling bearing and thus causes the roller to return into its initial position.
Dated this 1st day of August 1899.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant,

page_text: Improvements in High Speed Printing Machines.
I, PETER DVORAK, of 21, Bermogasse, Vienna VIII, in the Empire of Austria,
Printer, 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 relates to high speed printing machines of the type in which
the feeding of the sheets is effected automatically by an adhesive feeder.
Machines of this class as hitherto constructed require very complicated mechan-
ism, owing to the feed table, upon which the sheets are piled, having to be con-
stantly re-adjusted in position to compensate for the reduction of the pile.
By my invention I am enabled to dispense with the continuous re-adjustment
of the feed table.
The improved arrangement consists broadly of a picker-up bar moving in a
guide groove ending in a vertical straight path near the pile of sheets, such
picker-up bar being operated through the intervention of a rocking shaft and
lever so arranged as to control the movement of the said bar except in the straight
portion of the groove, and so enable the bar to be deposited upon the pile of vary-
ing height without hindrance from the never varying angular motion of the
operating lever.
My invention will be clearly understood by reference to the accompanying
drawing, in which;
Figure 1 shows a side elevation.
Figure 2 a longitudinal section.
Figure 3 a cross-section, of so much of a printing machine as is required to
show the application of the improved arrangement, of which
Figures 4 to 7 are details drawn to a larger scale.
Figures 8, 9 and 10 are an elevation, a plan, and a detail view respectively
of means for adjusting and disengaging the uppermost sheet of paper from
the pile.
According to this invention I fix at both ends of the printing cylinder 1, at
each side of the frame strong cheeks 2, 3, in which is mounted a shaft 4
adapted to receive a rocking motion from any convenient reciprocating mechan-
ism forming part of the machine, such as for example from the ink roller 5,
through the intervention of chain-wheels 6, 7, and chain 8.
The adhesive feed or picker-up bar 9 may be either shaped like a flat bar
or may be a roller, and is at certain parts 10 provided with an adhesive sub-
stance, preferably the well known mixture of gelatine and glycerine. This
bar 9 is provided with eccentrically disposed prismatic portions 11, 12 which
enter slots 13 in the cheeks 2, 3, and which cause the bar to always hang by
gravity with its adhesive parts 10 downwards. The slots 13 are formed with a
straight portion, preferably vertical and extending to the point 14, said slots
being concentric with the shaft 4 from 14 to 15 and finishing with an outwardly
curved portion to facilitate the accurate feeding of the sheets for printing. Upon
this shaft 4 are seated loosely two levers 16 (Figures 1, 3, 4) having slotted ends
in which engage the cylindrical end studs of the picker-up bar 9. On the inner
side of each lever 16 there is provided a spring 18 carrying a pin 19, which latter
passes through a hole in the lever, but is normally prevented from projecting
from the outer side of the lever by its spring which tends to pull it inwards.
Outside the levers 16 are other levers 20, fast on the shaft 4, which impart a
reciprocating motion to the first levers 16, and thereby to the picker-up bar 9,

page_text: end studs and in the other direction by means of spring controlled pins 19.
same along in the one direction by the action of the cylindrical
Curved face cams concentric with the shaft 4 and forming an inclined path
projecting from the outer sides of the cheeks 2, 3, act upon the pins 19
5 to engage or disengage them from the levers 20 as may be required.
TO
The sheets for printing are piled upon the fixed table 23 where they are
retained between the front abutting board 24 and stops 25 placed at the sides
and rear thereof.
The action of the improved arrangement is as follows:
In the position of the feed or picker-up bar 9 as indicated in Figure 2, the
sheet is presented to the grippers 26 by which such sheet is taken up and held
during printing. During the printing the feed or picker-up bar 9 is moved
towards the right owing to the retrograde movement of the inking roller 5.
The rotation of the shaft 4 causes the levers 20 to oscillate and these levers
in turn actuate the slotted levers 16 through the intervention of the pin 19
operated by the cam 21 with the result that the feed bar 9 also moves.
When the slotted levers 16 are on the right of a vertical line passing through
the shaft 4 the pins 19 are released by the action of their springs 18 from the
cam 21 and thereupon retire inward. "This allows the lever 20 to always perform
are
a uniform motion while the levers 16, together with the feed bar 9 only move as
far as the pile of paper will allow.
manner the sheets from the pile are necessarily picked up exactly at the same
The end of the slot 13 is vertical and in this
point from its front edge providing the sheets
abutting bar 24. If desired however
slot 13 may be replaced by an inclined or even a curved portion but in such case
placed against an
the vertical portion
the abutting bar 24 must be accordingly formed or arranged so as to enable the
of the
sheets to be all picked up at the same point from the front edge.
As soon as the feeder has taken hold of the uppermost sheet from the pile
by means of its adhesive surfaces 10, the motion of the mechanism is reversed,
the shaft 4 causes the levers 20 to strike against the cylindrical end studs of the
feed bar 9 and then move the levers 16 and feed bar 9 towards the printing
cylinder. Before the levers 16 arrive in the vertical position the pins 19 are
moved outwards by the inclined concentric cam 21 so as to prevent the feed bar 9
suddenly falling forward and also to form the means for returning the feed
bar into its position upon the pile. The prismatical portions 11, 12, engage in
the slots 13 which latter are narrower at their ends and fit the said portions 11, 12,
o that the possibility of the feed bar swinging on arriving at one or other
nd of its travel is effectually excluded.
In a slightly modified arrangement shown in Figure 5 the first and second
evers 16 and 20 are replaced by hook-shaped levers 27 keyed at each side of the
achine upon the shaft 4, and so arranged as to engage the cylindrical end
uds of the feed bar 9, and thus move the latter to and fro in the slot 13. This
gure also shows how the lever 27 disengages from the feed bar 9 directly this
tter comes to rest upon the paper pile whereupon the lever alone continues
s downward motion as indicated by dotted lines. In all other positions the
id hooked lever 27 controls the feed bar 9
d thereby compels the latter to participate in its motion except when in the
as shown in dotted lines
ht hand end position.
This is effected by having the vertical portion of the slot 13 nearer the shaft 4
an the other portions and by cutting away the side of the hooked lever 27
the manner shown so as to enable the feed bar 9 to escape therefrom.
Figures 6 and 7 are a longitudinal and a cross section respectively of the feed
9 drawn to a larger scale. The feed bar consists of a tubular portion 9
the interior of which is fixed a bar 28 which carries the tube and which forms
prismatic eccentric ends 11, 12 for guiding the bar in the slot 13. In
tube 9 is a second bar 29 adapted to be moved up and down and advantageously
vided with projections 30, 31 which pass through holes in the said tube 9.

page_text: In this bar 29 are screwed hollow screws 32 which pass with their smooth
shanks through the bar 28. These screws are filled at the lower portion with
adhesive substance 10 and are fitted at the upper end with a screw 33 having an
enlarged end 34. The vertical lift of the bar 29 can be adjusted to any desired
extent by suitable screws 35.
The object of this arrangement will be clear from the following.
The hollow screws 32 can be adjusted by screwing in or out in the tube so-as
to suit various thick or finer sorts of paper. For thick, heavy paper more screws
are placed in an operative position than for thin papers as it will be obvious
that more lifting power will be required for the former as compared with the
latter. The adhesive material must be of such a nature as not to take up
small chips or fibres of paper as otherwise it will lose its adhesive power very
soon. The material should not adhere so much as to leave more than a hardly
visible mark upon the sheet after being taken off. The wearing off of the
adhesive substance can be compensated little by little by screwing the screw
having the enlarged end further into the hollow screw 32.
The vertical motion of the bar 29 enables the sheet to be separated from
the feeder without damaging the paper. To this end a transverse shaft 36
(Figures 1, 2 and 3) carries levers 37 which normally are kept at a certain dis-
tance from the printing cylinder 1 by a lever 38 having a roller 39 which bears.
upon the surface of the cylinder and at each revolution enters a recess 40 therein.
This occurs just at the moment when the feeder presents the sheet to the
grippers 26 thereby causing the levers 37 on the transverse shaft to tilt over or
dip while at the same time the shaft 9 with bar 29 and projections 30, 31 advances
for feeding into the position just above the levers 37.
While the grippers now fasten down upon the sheet, the roller 39 retires from
the recess 40 in the cylinder surface thus raising the levers 37 which thereupon
engage beneath the projections 30, 31, and thus lift the bar 29 and with it the
hollow screws 32, causing them to retire within the tube 9 which at that moment
is still kept stationary. By thus withdrawing the screws 32 into the tube 9 the
paper sheets become separated from the adhesive substance of the said screws 32
without the slightest damage being done even to the finest paper.
The arrangement shown in Figures 8, 9 and 10, for adjusting and lifting the
top sheet of the pile comprises a roller 41 which reposes upon the paper pile 22
and is made of or covered with a material producing friction, such as caoutchouc,
rubber or the like. It is mounted in vertical bars 44, 45 loosely held in guides
42 and 43. The bars are fitted with adjustable tappets 46, 47, against which
levers 48, 49, act when operated by their cams or wipers 50. The roller 41 is
connected by a cord, strap or the like 54 running over grooved rollers 51, 52, 53
to a rail or bar 55 and so operates the same. The cords are fixed to adjustable
rings 56, 57 on the roller 41 and this latter is furnished with a lever 58 connected
to a presser rod 59. The said rod 59 is carried in a swivelling bearing 60 and is
actuated by a cam segment 61 fast on a chain wheel 7. A spring 62 is fastened
by its ends to the rod 59 and swivelling bearing 60 respectively and tends to
draw the rod towards the left and keeps its end applied to the cam, or at other
times draws a projection 63 against the bearing 60.
The action is as follows:
If the feed bar 9 be moved in the direction indicated by the arrow, the cam 61
strikes against the rod 59 and moves it to the right, thereby causing the lever
arm 58 to turn the roller 41 as shown by the arrow. The roller by friction moves
the top sheet on the pile forward, causing it to adjust itself against the front
board 24 and then buckle up slightly as shown. By thus adjusting each sheet
they will be picked up by the feeder 9 at a uniform distance from their front
edge while at the same time the buckling-up by the roller ensures their being
readily detached from the other sheets. The rail or bar 55 is lowered upon the
paper and prevents the front edge of the sheet curling up through the action
of the roller 41.

page_text: Meanwhile the feeder 9 is brought into contact with the top sheet which then
sticks to the adhesive substance of the hollow screws 32 and at the same time
the cam or wiper 50 operates the levers 48, 49 and causes these latter to act upon
the tappets 46, 47 and so lift the rods 44, 45, together with the roller 41 as well
as the rail or bar 55. Thus the top sheet is now free to be removed by the
feeder 9.
At the return motion of the shaft 4 the cam 61 releases the rod 59 and allows
a spring 62 to draw it towards the left until the before mentioned projection 63
comes against the swivelling bearing 60 and thus causes the roller 41 to return
into its initial position.
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. A high speed printing machine with adhesive feeder, characterized broadly
by a feeder 9 mounted in slots 13 in guide cheeks 2, 3, and operated through the
intervention of a rocking shaft 4 and levers 20, Figures 1 to 3, or 27 Figure 5,
in such a manner as to positively move it in the curved portions only of the
slot 13 but disengaging from it in the straight portion thereof for the purpose of
enabling the feeder to take its position upon the paper pile of varying thickness
without impediment to the uniform or non-varying angular motion of the operat-
ing lever, substantially as herein before described.
2. In high speed printing machines as claimed in Claim 1, a modified feed
arrangement in which the movement of the feeder through the intervention of
the shaft 4 is obtained by means of a hook-shaped lever 27, substantially as
herein before described with reference to Figure 5 of the accompanying drawings.
3. In high speed printing machines as claimed in Claim 1, in which the
operating lever 20 Figures 1 to 3 of the feeder co-operates with levers 16 loosely
mounted on the shaft 4, and which are coupled therewith during the entire travel
in one direction, and only for a part of the travel in the other direction, i.e. along
the curved portion of the slot 13, the coupling of the levers being effected by
spring controlled pins 19 acted upon by a cam 21 substantially as herein before
described.
4. In a high speed printing machine a feeder characterized by hollow screws 32
fitted with adjustable screws 33 for pressing out the adhesive substance 10
contained in the hollow screws 32 which may or may not be retained in a movable
bar 29 adapted to be lifted by levers 37 at the moment of delivering the sheet
into the grippers of the printing cylinder in order to separate the sheets from
the adhesive substance.
5. In the high speed printing machine claimed in Claim 1 an arrangement for
adjusting and loosening the top-sheet, characterized by a roller 41 resting upon
the top sheet and adapted to be revolved by means of a lever 58 and rod 59
operated by a cam 61 so as to cause the sheet to be first adjusted against the
front board 24 and then buckled while its front edge is being held by a rail or
bar 55 to loosen the top sheet from the pile the rail or bar 55 being finally
lifted through the intervention of a lever 49 in order to allow of the sheet being
removed, substantially as herein before described with reference to Figures 8, 9
and 10 of the accompanying drawings.
.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicant.