L PRESS PRINTING MACHINES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said George Newsum at the
Office of the Commissioners of Patents on the 11th January 1882.
GEORGE NEWSUM of Leeds in the County of York.
LITHOGRAPHIC AND LETTER PRESS PRINTING MACHINES."
"IMPROVEMENTS IN
First. My improvements have reference to the inking or form rollers used in
lithographic and letter press printing machines. These I mount in adjustable
swivel bearings, in which they may be set to any height, and also worked at any
required angle. I also mount "riders" on or between the inking or form rollers.
To these "riders" a rotary reciprocating motion is imparted through suitable
gearing from a rack which moves backwards and forwards with the table. The
required motion is imparted to the form or inking rollers by friction from the
rotating "rider." This arrangement of form or inking rollers and means employed
for imparting motion to the same prevents the noise and friction or "skidding" on
or over the work and the ink is better or more evenly distributed.
Second. My improvements have reference to the arrangement of damping rollers
on lithographic machines, and the means for imparting the required moisture to
the same.
The damping rollers are mounted in adjustable bearings in which they
may be set to any required height. I also mount " 'riders" on or between the
damping rollers and impart the required rotary reciprocating motion through
suitable gearing from a rack which moves backwards and forwards with the table.
The required motion is imparted to the damping rollers by friction from the
rotating "riders." For the purpose of imparting the required moisture to these
rollers I employ a trough containing water extending across the machine, within it
[Price 621

page_text: in suitable bearings I mount a roller such roller being caused to revolve and
partially immersed in the water carries round with it a supply thereof. For the
purpose of conveying the required amount of moisture to the damping rollers I
provide another roller covered with flannel or other absorbent material, this is
mounted on arms attached to a rocking shaft on the framework. On the shaft
that carries the trough roller I provide an expanding cam and thereby impart the
to and fro motion to the water feed roller. By such motion it is brought in
contact with the upper portion of the trough roller and is retained there by the
cam until it has absorbed the required amount of water. Then after being released
from the cam it drops onto the "rider" giving off its moisture thereto, and thence
such moisture is imparted to the damping rollers.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Newsum in the Great Seal Patent Office on the 10th July
1882.
GEORGE NEWSUM of Leeds in the County of York.
LITHOGRAPHIC AND LETTER PRESS PRINTING MACHINES."
"IMPROVEMENTS IN
Fig. 1 is a part side elevation of printing machine shewing my arrangement of
inking, damping, and distributing rollers. Fig. 2 is a plan looking at the top of
the same. Figs. 3 and 4 are respectively part enlarged side and end elevation
shewing arrangement of printing rollers.
First. My improvements have reference to the arrangement of inking rollers on
lithographic or letter press printing machines a is part of the framework of the
printing machine and b are the inking rollers. These are carried in the bearings c
which are carried on the brackets & attached to the carriage e by means of the
bolts fand in order to render them capable of adjustment in a lateral direction
slot holes g are provided through which the bolts of pass. I provide also the
grooves into which the projection i are fitted (so as to slide freely) in order to
retain the brackets d in their proper position. The bearings c are provided with
the round shank k so that they may be swivelled round to any angle and are
adjusted in a vertical direction by the set screws l.
I also mount the riders m on or between the inking or form rollers in bearings n
on the carriage e. To these riders m a rotary reciprocating motion is imparted
through suitable gearing o from a rack p which is attached to the table and moved
backward and forward therewith. The required rotary motion is imparted to the
form or inking rollers 6 by friction from the rotating riders m. This arrangement
of form or inking roller b and means employed for imparting motion to the same
prevents the noise and friction or skidding over the work and the ink is better or
more evenly distributed.
J
Second. My improvements have reference to the arrangements of damping rollers
on lithographic printing machines and the means for imparting the required
moisture to, the same. The damping rollers are shewn at q these are mounted in
bearings arranged and applied in all respects in the same manner as those for the
inking rollers b. I also mount riders r on or between the damping rollers q and
impart the required rotary reciprocating motion thereto from the rack p through
suitable gearing in a similar manner to that described for the inking riders m.
The required motion is imparted to the damping rollers 9 by friction from the
damping riders r. For the purpose of imparting the required moisture to these
rollers 9 I employ a trough 8 mounted on the damping roller carriage t and within
it in suitable bearings u I provide a roller v, such roller being caused to revolve by
suitable gearing w and partially immersed in water carries round with it a supply
thereof. In order to distribute the moisture uniformly over the damping rollers g
I provide another roller x covered with flannel or other absorpent material. This
roller is mounted on arms y attached to a rocking shaft z on the damping roller
carriage t. On the shaft 1 that carries the trough roller v I provide a cam 2 for
the purpose of imparting the necessary to and fro motion to, the water feed roller x.
By such motion it is brought in contact with the upper portion of the trough
roller and is retained there by the cam 2 until it has absorped the required.
amount of water. Then after being released by the cam 2 it drops onto the rider r
giving off its moisture thereto and thence such moisture is imparted to the damping
rolleis q.
The distributing rollers 3 are mounted in swivel bearings 4 on the carriage 5

page_text: and adjusted in a vertical direction by the set screws 6 as already described for
the inking and distributing rollers.
Having now with the aid of Drawings described my said Invention and how
the same may be carried into practice I would have it understood that I do not
limit myself to the precise details and configuration of the parts I have described
and shewn as the same may be varied without departing from the nature of my
Invention; but what I claim is :-
First. The arrangement, construction and application of the adjustable bearings c
of the inking or form rollers b; and the means employed for imparting the rotary
, reciprocating motion to the inking or form rollers 6 of lithographic and letter-press
printing machines substantially as and for the purposes herein set-forth.
Second. The arrangement, construction, and application of the adjustable
bearings c to the damping rollers q, and the means employed for damping and
imparting the rotary reciprocating movement to the damping rollers q of litho
graphic printing machines substantially as and for the purposes herein setforth.
In witness whereof I the said George Newsum have hereunto set my hand
and seal this Thirtieth day of June in the year of our Lord One thousand
eight hundred and eighty two.
GEORGE NEWSUM. (L.S.)