Improvements in Copper-plate Printing Machines.
Year: 1889

page_text: Date of Application, 6th Sept., 1889
Complete Specification Leit, 15th Apr., 1890-Accepted, 24th May, 1890
PROVISIONAL SPECIFICATION.
Improvements in Copper-plate Printing Machines.
I JEAN LARIVIÈRE of 79 Rue du Cherche-Midi Paris in the Republic of France, .
Copper Plate Printer, do hereby declare the nature of this invention to be as
follows:-
The invention constituting the subject of the present application consists of an
arrangement of machine for copper plate printing, principally characterised by the
new arrangement and combination of the wiper or rubber and damper, which are
employed to operate according to the nature of the work to be effected by a simple
or compound rotary motion intended to imitate that which is done by hand in this
special kind of work.
The complete machine and its principal details; such as I have designed, are
represented in the accompanying drawings but only by way of example.
Figure 1. represents the elevation of the complete machine.
Figure 2 is a corresponding plan, part of each of said Figures being drawn for
convenience on two separate sheets.
Figure 3. is a vertical transverse section drawn through the wiper or rubber and
through the axis of the turning plate.
In all the figures like parts are indicated by similar letters of reference.
The machine consists essentially of a cylinder a provided with grippers as in litho-
graphic machines, of a table b, of the carriage c which carries the plate and which
is situated between the rubbing or wiping apparatus at d and the damping apparatus
at e, of the inking table f of the ink font g, of distributing rollers f¹ and of inking
rollers h, and finally of rubbing or wiping apparatus at d and damping apparatus
at e.
The rubber or wiper and the damper being constructed, driven and working in an
exactly similar manner I will limit myself to describing only one of them; at the
same time remarking that the roller which carries the damping cloth is hollow and
perforated with small holes to permit the damping of this cloth by the water
contained in it whilst the like roller of the rubber or damper is without such
perforations.
As is more particularly represented at Figure 3, the wiper, or rubber and the
damper each consists of a depending frame K which carries the cloth covered rollers
and their gearing, this frame is mounted on the vertical shaft / rotated by the strap
pulley m,
this shaft carries a clutch n held in the fork of the lever o, which is operated
by the cam p.
For ordinary work, the above described mechanism, whilst remaining the same as
described does not utilize the rotary motion that the shaft is intended to give to it;
it is the same with the carriage which carries the engraved plate, and which in place
of turning in a contrary direction to that of the wiper or rubber and of the damper
retains only its rectilinear to and fro motion.
The shaft carries, jointed at 9 a double lever r having a roller at each end, the
first son which is wound a convenient length of calico or other suitable cloth, and
the second s¹ receiving this calico or cloth after it has served its purpose.
The travel of this cloth or calico is produced by the action of the rollers t which
are rotated by a series of toothed wheels and by the ratchet gear u.
The course of
the cloth is represented in the drawing by a thick black line; it passes under the
metallic plate W. the lower surface of which is covered with swansdown or other
suitable material.
For very particular work, the rubber or wiper and the damper, thus arranged,
turn in contrary direction to the carriage V, and they are both mounted so as to be

page_text: raised at the moment of the passage of the table for inking and for the return of the
carriage.
an
The carriage V consists of a circular table having two movements
advancing motion and a rotary motion. These two movements are simultaneously
effected in the above case during the period of traverse; in the outward motion,
comprised between the distributing rollers and the cylinder, so as to present itself
always in the same direction under this cylinder during the return motion the table
of the carriage does not turn.
The forward motion of the carriage can otherwise be the same as in printing
machines; with respect to its rotary motion it is obtained when required by means
of a longitudinal shaft x rotated by bevel wheels and the vertical shaft y on which is
keyed the table v.
As is shown clearly by Figure 1. the inking rollers h are placed between the
rubber or wiper and the damper, and they are raised during the outward motion of
the carriage, and lowered during the return by means of the cam 2.
As the other details of the machine do not present any specially characteristic
arrangements, there is no necessity for describing them here, nor the driving and
transmitting mechanism which can be of any desired arrangement.
Dated Santambon with 100a
JEAN LARIVIÈRE.
By Harris & Mills,
23, Southampton Buildings, Agents.
COMPLETE SPECIFICATION.
Improvements in Copper-plate Printing Machines.
I, JEAN LARIVIÈRE of 79 Rue du Cherche-Midi, Paris in the Republic of France,
Copper Plate 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 :-
The invention constituting the subject of the present application consists of an
arrangement of machine for copper plate printing, principally characterised by the
new arrangement and combination of the wiper or rubber and damper, which are
employed to operate according to the nature of the work to be effected, by a simple
or compound rotary motion intended to imitate that which is done by hand in this
special kind of work.
The complete machine and its principal details, such as 1 have designed, are
represented in the drawings accompanying my provisional specification but only by
way of example.
Figure 1. represents the elevation of the complete machine. Figure 2 is a corre-
sponding plan, part of each of said Figures being drawn for convenience on two
separate sheets.
Figure 3 is a vertical transverse section drawn through the wiper or rubber and
through the axis of the turning plate.
In all the Figures like parts are indicated by similar letters of reference.
The machine consists essentially of a cylinder a provided with grippers as in
lithographic machines, of a table b, of the carriage c which carries the plate and
which is situated between the rubbing or wiping apparatus at d and damping
apparatus at e, of the inking table f of the ink font g, of distributing rollers f1 and of
inking rollers h and finally of rubbing or wiping apparatus at d and damping
apparatus at e.
The rubber or wiper and the damper being constructed, driven, and working in an
exactly similar manner I will limit myself to describing only one of them; at the.
same time remarking that the roller which carries the damping cloth is hollow and
perforated with small holes to permit the damping of this cloth by the water
contained in it whilst the like roller of the rubber or wiper is without such
perforations.

page_text: As is more particularly represented at Figure 3, the wiper or rubber and the
damper, each consists of a depending frame K which carries the cloth covered rollers
and their gearing, this frame is mounted on the vertical shaft / rotated by the strap
pulley m, this shaft carries a clutch n held in the fork of the lever o, which is operated
by the cam p.
For ordinary work, the above described mechanism, whilst remaining the same as
described, does not utilize the rotary motion that the shaft is intended to give to it;
it is the same with the carriage which carries the engraved plate, and which in place
of turning in a contrary direction to that of the wiper or rubber and of the damper
retains only its rectilinear to and fro motion.
The shaft carries, jointed at q, a double lever r having a roller at each end, the
first s on which is wound a convenient length of calico or other suitable cloth, and the
seconds receiving this calico or cloth after it has served its purpose.
The travel of this cloth or calico is produced by the action of the rollers t which
are rotated by a series of toothed wheels and by the ratchet gear u. The course of
the cloth is represented in the drawing by a thick black line; it passes under the
metallic plate w the lower surface of which is covered with swansdown or other
suitable material.
For very particular work, the rubber or wiper and the damper, thus arranged, turn
in contrary direction to the carriage v, and they are both mounted so as to be
raised at the moment of the passage of the table for inking and for the return of the
carriage.
The carriage v consists of a circular table having two movements: an advancing
motion and a rotary motion. These two movements are simultaneously effected in
the above case during the period of traverse; in the outward motion, comprised
between the distributing rollers and the cylinder, so as to present itself always in the
same direction under this cylinder; during the return motion the table of the carriage
does not turn.
The forward motion of the carriage can otherwise be the same as in printing
machines; with respect to its rotary motion it is obtained when required by means of
a longitudinal shaft x rotated by bevel wheels and the vertical shaft y on which is
keyed the table v.
As is shown clearly by Figure 1 the inking rollers h are placed between the rubber
or wiper and the damper, and they are raised during the outward motion of the
carriage, and lowered during the return by means of the cam z.
As the other details of the machine do not present any specially characteristic
arrangements, there is no necessity for describing them here, nor the driving and
transmitting mechanism which can be of any desired arrangement.
Having no 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 1
claim is:-
1. The improved copper plate printing machine consisting essentially in the
arrangement of the rubber or wiper and of the damper, which have a rotary motion
analogous to that executed by the hand in this kind of printing, all substantially as
herein shown and described.
2. An arrangement of copper plate printing machine, in which the rubbing or
wiping and damping apparatus, as also the carriage which carries the engraved plate,
can at will and according to the nature of the work receive or not a rotary motion
upon themselves substantially as herein shown and described and for the purpose
stated.
1000
Davo p
JEAN LARIVIÈRE.
By Harris & Mills,
23, Southampton Buildings, London, Agents.