Improvements in Inking Apparatus of Cylinder Printing Machines.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in Inking Apparatus of Cylinder Printing Machines.
DAVID PAYNE, of Caxton Works, Otley, in the County of Yorkshire, Engineer,
and DANIEL THOMAS POWELL, of 33A, Ludgate Hill, in the City of London,
Engineer, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the inking appliances of letterpress
printing machines and has for its object the provision of simpler means of getting
the rollers in and out of position in connection with cylindrical or pyramid inking
systems.
The distributing drums are placed in a frame capable of being raised or lowered
by any suitable mechanical means instead of being definitely fixed in one position
or one height as as present. The rotary motion is imparted to the distributing
drums by means of geared pinions driven from the loose wheel on the printing
cylinder. These pinions are so placed that when the frame is raised to its fullest
limit they always remain in gear with the loose wheel, it is thus impossible to
get into a wrong tooth, or position and accidents are thereby avoided and no time
is required for setting the drums in position for reciprocating. The frame carry-
ing the drums
"inkers"
the
at highest point allows
to be easily
lifted in or out of position and when these have been placed and adjusted in the
adjusting brackets, hereafter described, the drums in the frame are lowered right
down to the lowest limit and make contact with the "inkers or forme rollers.
The adjusting brackets of which there are 2 for each roller, one on each side
of machine, are constructed so as to be screwed on to the side frame of the
machine and are provided with slotted holes to enable them to be set in any
required position. In the upper parts of these brackets is a fine threaded screw
of sufficient diameter to carry the metal fork in which the spindle of the inking
roller revolves. By means of this screw the exact height of the inking roller is
determined and having been adjusted it is prevented from alteration by a locking
device.
"
When the drums are raised the rollers may be lifted out to be
washed or for any purpose without any of the brackets or their adjustments
being moved or interfered with and when the rollers are replaced they are in pre-
cisely the same position as formerly no time being consumed in readjusting as at
present.
Similar advantages may be obtained by means of a device for lowering the ink-
ing rollers away from the drums and to do this we provide at both sides of the
side frames of the machine, a sliding frame capable of being raised or lowered by
suitable mechanical means and on to these sliding frames are bolted the adjusting

page_text: brackets before referred to. In this case the drums remain at one fixed height
but if it is desired both systems may be embodied on one machine.
Dated this 27th day of September 1899.
DAVID PAYNE,
DANIEL T: POWELL.
Improvements in Inking Apparatus of Cylinder Printing Machines.
We, DAVID PAYNE, of Caxton Works, Otley, in the County of York, and
DANIEL THOMAS POWELL, of 33A, Ludgate Hill, in the City of London, Printers'
Engineers, 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 improvements in the inking appliances of letterpress
printing machines and has for its object the provision of simpler means of getting
the rollers in and out of position in connection with cylindrical or pyramid inking
systeins.
The distributing drums are placed in a frame capable of being raised or lowered
by any suitable mechanical means instead of being definitely fixed in one position
or one height as as present. The rotary motion is imparted to the distributing
drums by means of geared pinions driven from the loose wheel on the printing
cylinder. These pinions are so placed that when the frame is raised to its fullest
limit they always remain in gear with the loose wheel, it is thus impossible to
get into a wrong tooth, or position, and accidents are thereby avoided and no time
is required for setting the drums in position for reciprocating. The frame carry-
ing the drums when at its highest point allows the inkers to be easily
lifted in or out of position and when these have been replaced and adjusted in the
adjusting brackets, hereafter described, the drums in the frame are lowered right
down to the lowest limit and make contact with the inkers or forme rollers.
The adjusting brackets of which there are two for each roller, one on each side
of the machine, are constructed so as to be screwed on the side frame of the
machine and are provided with slotted holes to enable them to be set in any
required position. In the upper parts of these brackets is a fine threaded screw
of sufficient diameter to carry the metal fork in which the spindle of the inking
roller revolves. By means of this screw the exact height of the inking roller is
determined and having been adjusted it is prevented from alteration by a locking
device.
When the distributing drums are raised the rollers may be lifted out to be
washed, or for any purpose, without any of the brackets or their adjustments
being moved or interfered with and when the rollers are replaced they are in pre-
cisely the same position as formerly no time being consumed in readjusting as at
present.
Similar advantages may be obtained by means of a device for lowering the ink-
ing rollers away from the drum and to do this we provide at both sides of the
side frames of the machine a sliding frame capable of being raised or lowered by
suitable mechanical means and on these sliding frames are bolted the adjusting
brackets before referred to. In this case the distributing drums remain at one
fixed height but if it is desired both systems may be embodied on one machine.
The accompanying drawing is a side elevation showing the invention worked
either by raising the distributing rollers, or by lowering the inking rollers, or
both methods may be applied to the same machine.

page_text: a is-a frame working in the slides c, d, and e, f, so that it can move up or down
freely. This frame carries the three distributing drums g, h, i, and the
rollers k, l, m; each of the distributing drums carries a toothed wheel working in
gear with the intermediate toothed wheel o and the top drum g is also connected
by toothed wheels P and q with the loose wheel A on the cylinder.
E is a bracket attached to the cylinder stand and provided at its overhanging
end with a threaded nut 1 working in a bearing in the end of the bracket, and
provided on its outer periphery with teeth gearing into a worm F.
Inside this nut works a threaded spindle C attached at its lower end to the
frame by means of a pin B. By revolving the nut D in its bearing by means
of the worm F the screw C is caused to rise, drawing with it the whole frame a.
together with its wheels and rollers, and they may be raised so far as to allow of
the forme rollers ₁₂, being lifted out of their respective sockets. This
can be effected without withdrawing the pinion q wholly out of the gear with the
loose cylinder wheel A, so that when the frame is dropped back into its place the
pinion will return into gear with precisely the same teeth as when the machine
stopped. It must be understood that the apparatus shown is duplicated with the
exception of the toothed wheels, on the other side of the machine, and the worm
spindle passes across so that both threaded nuts are always moved precisely the
same amount, and the rollers thus kept parallel with the table.
The drums when lowered down to their lowest make contact with the inkers
or forme rollers 2 4 carried in the forks $1, 82, 83, 54. These forks slide
into the hollow adjusting nuts such as which screw into the upper part of the
brackets, which are attached ordinarily to the top of the side frame of the
machine; by revolving the nut the fork is raised or lowered, and the rollers brought
nearer or farther away from the drums h, and i, to which they can thus be adjusted
to a nicety. The upper part of the brackets u are split so that when the right
position is found the nut can be locked by tightening the bracket holding it, or
an ordinary lock nut may be added for this purpose. A certain amount of side
adjustment is also provided for by connecting the brackets to the side frames
through slotted holes such as b.
A modification of our invention is shown. Instead of raising the frame a or
in addition to so doing, the inking rollers may be carried by a sliding frame v
working in the slides, y, and z, n, and connected at w to a similar mechanism
as that above mentioned for raising or lowering.
In this case the frameworks in a space cut out of the side frames of the
machine and may advantageously be arranged with a fixed travel, bringing it
always back to the same position; any further adjustment of the inking rollers
that may be necessary when the distributing drums are in a fixed frame is then
made by means of the adjusting brackets just mentioned, which are attached to
the top of the sliding frame v.
It must be understood that we do not limit ourselves to the screw mechanism
shown for raising and lowering the sliding frames. A toggle system of levers
with one of the end pivots of the toggle connected to the frame vat w may advan-
tageously be used for the lower frame.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. In printing machines having a cylindrical or pyramid system of inking
apparatus, the construction of the distributing portion of the apparatus on a sliding
frame which can be raised to admit of the inking, or forme rollers, being removed,
without disturbing their bearings, and without the gearing together of the train
of toothed wheels driving the distributing drums being altered when the frame is
returned to its working position, substantially as herein described.
2. In printing machines having a cylindrical or pyramid system of inking
apparatus, the construction of a sliding frame carrying the inking roller bearings

page_text: and working in slides formed in the side frame of the machine; so that the said
sliding frame can be lowered to admit of the inking rollers being removed and
returned to its working position without the adjustment of the rollers with the
distributing apparatus being altered, substantially as herein described.
3. The combination of a sliding frame a carrying the distributing drums, with
a sliding frame » carrying the inking rollers, arranged and operating substantially
. as herein described and illustrated in the drawing.
Dated this 28th day of June 1900.
SYDNEY E. PAGE, A.M.I.C.E.,
28, New Bridge Street, London, E.C,
Agent for the Applicants.