Improvements in Lithographic and Letterpress Printing Machines.
Year: 1889

page_text: Date of Application, 24th Dec.; 1889
Complete Specification Left, 24th Oct., 1890-Accepted, 29th Nov., 1890
PROVISIONAL SPECIFICATION.
Improvements in Lithographic and Letterpress Printing Machines.
I, ADAM PATON, of 114, Beeston Road, Leeds, in the County of York, Engineer,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the application of ink-distributing cylinders instead of
inking tables or slabs in lithographic and letter-press printing machines, thereby
reducing the length of the machines, and ensuring much better distribution of ink
than is to be obtained on the inking tables or slabs.
I place ink-distributing cylinders above the inking rollers in such a position that
the inking rollers rise and fall between the ink-distributing cylinders and the stone or
forme, taking their ink from the above cylinders and supplying it to the stone or forme ;
and in case the inking rollers are not perfectly round 1 sustain them up against the
ink-distributing cylinders by means of elastic pressure such as springs, india rubber,
or balance weights.
One ink-distributing cylinder is placed a little above each set of two or three inking
rollers, the inking rollers are in the usual place relative to the stone or forme and in
ordinary inking roller brackets, then I use a frame, rising and falling at the proper
times under the inking roller spindles and outside the ordinary inking roller brackets
which franre has long springs in it under half bearings so that as the frame rises
these half bearings lift the roller spindles up until the rollers touch the ink-
distributing cylinders having the elasticity of the springs under these half bearings
and rollers.
T 14h dow of December 1889
COMPLETE SPECIFICATION.
Improvements in Lithographic and Letterpress Printing Machines.
1, ADAM PATON, of 114, Beeston Road, Leeds, in the County of York, Engineer,
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 the application of ink-distributing cylinders instead of
inking tables or slabs in lithographic and letterpress printing machines, thereby
reducing the length of the machines, and ensuring much better distribution of ink
than is to be obtained on the inking tables or slabs.
I place ink-distributing cylinders above the inking rollers in such a position that
the inking rollers rise and fall between the ink-distributing cylinders and the stone or
forme, taking their ink from the above cylinders and supplying it to the stone or
forme; and in case the inking rollers are not perfectly round 1 sustain them up
against the ink-distributing cylinders by means of elastic pressure such as springs,
india-rubber, or balance weights.
One ink-distributing cylinder is placed a little above each set of two or three inking
rollers. The inking rollers are in the usual place relative to the stone or forine and
in ordinary inking roller brackets; then I use a frame, rising and falling at the
proper times under the inking roller spindles and outside the ordinary inking roller
brackets, which frame has long springs in it under half bearings so that as the frame
rises these half bearings lift the roller spindles up until the rollers touch the ink-
distributing cylinders having the elasticity of the springs under these half bearings

page_text: Figure 1 shows the spring frame with the cam for raising and lowering it, in com-
bination with the inking rollers and ink-distributing cylinders.
Figure 2 is a partial end view of the same.
Figure 3 shows the gearing necessary to remove the inking-roller brackets out of
position in order to withdraw the rollers for cleaning.
In Figure 1. CC are the ink-distributing cylinders, which in addition to a
continuous revolving motion, have a transverse motion for the better distribution
of ink.
RRRR are the inking rollers in the ordinary bracket D, which has the new
method of removing it out of position in order t, clean or change the rollers, namely
a rack K.which is placed inside the bottom of th
fastened to G the side frame of the machine.
and set inside the end of the roller bracket
hand-wheel, the brackets with the rollers can
ink-distributing cylinders.
roller bracket the whole length and
use two pinions geared into the rack
er the rack, so that by turning the
be removed out from underneath the
F is the rising and falling frame actuated by he cam E, so that when the frame is
raised to the full extent, the half bearings old the inking rollers up against the
ink-distributing cylinders, having the elasticit of the springs S coiled round the
spindles X, which move loose in the frame, being screwed into the half bearings b,
and having adjustable nuts n to give more or less pressure to the inking rollers.
Fig. 2 shows the rising and falling frame F as outside the ordinary inking roller
bracket D. K shows the space for the rack inside the bracket, and the space for the
pinions is to be seen above K.
In Figure 3 I show the racks K fixed to the machine side frames G.
PP are the pinions geared together and into the rack. The top pinions are fixed
on to the hand wheel shaft m. It is evident that by turning this hand wheel the
brackets will be carried along the rack.
I can use the frame F as a combined inking roller bracket and rising and falling
bracket.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim in respect of Improvements in Lithographic and Letterpress Printing
Machines is:-
First. The frame F with springs or any elastic matter or balance weights as the
substitute for springs in combination with the ordinary inking roller brackets and ink-
distributing cylinders substantially as herein described.
Second. The frame F acting as a roller bracket and rising frame in one, sub-
stantially as herein described.
Third. In combination with the frame F the application of the rack inside and
under the ordinary roller brackets, with pinion or pinions to slide the brackets
over the top of the rack substantially as herein described in Figure 3.
Dated this 23rd day of October 1890.
ADAM PATON.