IMPROVEMENTS IN MACHINELY FOR AND IN ENGRAVING THE METALLIC SURFACES OF PRINTING ROLLERS OR CYLINDERS
Year: 1860

page_text: LETTERS PATENT to Aime Louis Eugene Breittmayer, of No. 14, Rue de
Bruxelles, in the City of Paris, in the Empire of France, Merchant, for
the Invention of "IMPROVEMENTS IN MACHINELY FOR AND IN ENGRAVING
THE METALLIC SURFACES OF PRINTING ROLLERS OR CYLINDERS."
ealed the 27th July 1860, and dated the 7th February 1860.
PROVISIONAL SPECIFICATION left by the said Aime Louis Eugene
Breittmayer at the Office of the Commissioners of Patents, with his
Petition, on the 7th February 1860.
I, AIME LOUIS EUGENE BREITTMAYER, of No. 14, Rue de Bruxelles, in the
City of Paris, in the Empire of France, Merchant, do hereby declare the
nature of the Invention for "IMPROVEMENTS IN MACHINERY FOR AND IN
ENGRAVING THE METALLIC SURFACES OF PRINTING ROLLERS OR CYLINDERS," to be
as follows;-
In the Specification of a Patent granted to William Smith, dated the 18th
September 1857 (No. 2414), was described the following process of engraving
printing rollers or cylinders:-The desired pattern is first drawn on the cir-
cumference of a metal cylinder with an insulating varnish, the metal cylinder
is then put in communication with a wire leading from one pole of a battery,
and a point pressed by a spring against the surface of the cylinder is, put in
communication with a wire leading from the other pole of the battery, this
wire being first coiled around a piece of iron, so as to form an electro-magnet
when the circuit is completed. The keeper of this magnet, is connected to a
diamond or other point constantly pressed against the circumference of the
Price Sd1

page_text: cylinder to be engraved, by a spring of sufficient strength to cause the point to
cut a distance into the cylinder when the cylinder is rotated. Both cylinders
are then caused to rotate, and the points pressing on the circumference of
each cylinder are moved slowly from one end of the cylinder to the other.
When the point pressing on the cylinder on which the pattern is drawn is in
contact with the metal surface of the cylinder, the circuit of the battery is
completed, and the cutting point is drawn back by the keeper of the magnet
from the surface of the cylinder to be engraved, so that it will not cut into the
cylinder, but when the point pressing on the cylinder on which the pattern is
drawn is in contact with the portion of the cylinder coated with varnish, the
circuit is broken, and the cutting point is allowed to cut into the cylinder, and
by this means when the point has travelled from one end of the cylinder to the
other, the cylinder will be engraved to the desired pattern. The arranging
machinery for engraving with several tools at the same time was also described,
each tool being worked by a separate electro-magnet and spring, and each
magnet being worked from a separate pattern cylinder.
Now one part of my Invention consists in arranging machinery similar to
that above described, in such manner that two or more tools may be worked
at the same time from one pattern cylinder; two or more printing rollers or
cylinders may thus be engraved at the same time from one pattern cylinder,
or the same pattern may be repeated two or more times along the length of
one or more cylinders. For this purpose each tool, is actuated by a separate
electro-magnet, and the point pressing against the surface of the pattern
cylinder is connected with a wire, to which one end of the coil of wire of each
magnet is connected, the other end of the coil of each magnet is connected to
a wire leading from one pole of a battery, and the pattern cylinder is as before
put in communication with a wire leading from the other pole of the battery.
By this means when the point pressing against the surface of the pattern
cylinder is in contact with the metallic surface of the pattern cylinder, all the
magnets will simultaneously draw away the cutting points from the surface of
the cylinder or cylinders; but when the point is in contact with a portion of
the cylinder which is coated with varnish, the current will be broken and all
the points will cut into the surface of the cylinder or cylinders.
Another part of my Invention consists in arranging machinery similar to
that above described, in such manner that from two or more pattern cylinders,
each having a different design upon it, two or more cylinders may be engraved,
and the design engraved on each printing cylinder be repeated two or more
times along its length. For this purpose a separate cutting tool is employed
for every repetition of each design, and each cutting tool is actuated by a

page_text: separate electro-magnet, as in the machine above described.
By this
Against the
circumference of each pattern cylinder a separate point is made to press, and
each of these points has connected to it a wire, and each wire is in communi-
cation with one end of each of the coils of wire of the electro-magnets for
actuating the cutting tools acting on the circumference of one printing cylinder;
the other ends of the coils of wire of the electro-magnets are connected to a
wire coming from one pole of a battery, the wire from the other pole of the
battery being in communication with each of the pattern cylinders.
means when the pattern cylinders and the cylinders to be engraved are caused
to rotate, and the points pressing on their circumferences moved in the
direction, of their length, each cylinder will have engraved on it two or more
times along its length the pattern on the pattern cylinder, from which the
cutting tools acting on its surface are operated. In place of causing the
cutting tools to cut into the cylinders the depth required for printing, I first
coat the cylinder with varnish, and then by the cutting tools remove the
varnish where the cylinder is to be engraved, and also a portion of the metallic
surface of the cylinder. The cylinder is then placed horizontally in a bath of
acid and water, in which there is also a plate of the same metal as the
cylinder. The cylinder is then put in communication with one pole of a
battery, and the metal plate with the other pole, by which means the engraving
will be bitten in.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Aime Louis Eugene Breittmayer in the Great Seal Patent Office
on the 7th August 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, AIME
LOUIS EUGENE BREITTMAYER, of No. 14, Rue de Bruxelles, in the City of Paris,
in the Empire of France, Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of February, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-third year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Aime Louis Eugene Breittmayer, Her special licence that I, The said Aime
Louis Eugene Breittmayer, my executors, administrators, and assigns, or
such others as I, the said Aime Louis Eugene Breittmayer, my executors,
administrators, and assigns, should at any time agree with, and no others.
from time to time and at all times thereafter during the term therein

page_text: expressed, should and lawfully might make, use, exercise, and vend, within
the United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for IMPROVEMENTS IN MACHINERY FOR AND IN
ENGRAVING THE METALLIC SURFACES OF PRINTING ROLLERS OR CYLINDERS," upon
the condition (amongst others) that I, the said Aime Louis Eugene Breitt-
mayer, my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Aime Louis Eugene Breittmayer, do
hereby declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say:-
In the Specification of a Patent granted to William Smith, dated the 18th
September 1857 (No. 2414), was described the following process of engraving
printing rollers or cylinders-The desired pattern is first drawn on the
circumference of a metal cylinder, with an insulating varnish; the metal
cylinder is then put in communication with a wire leading from one pole of a
battery, and a point pressed by a spring against the surface of the cylinder is
put in communication with a wire leading from the other pole of the battery,
this wire being first coiled around a piece of iron so as to form an electro-
magnet when the circuit is completed. The keeper of this magnet is con-
nected to a diamond or other point constantly pressed against the circum-
ference of the cylinder to be engraved by a spring of sufficient strength to
cause the point to cut a distance into the cylinder when the cylinder is rotated.
Both cylinders are then caused to rotate, and the points pressing on
the circumference of each cylinder are moved slowly from one end of the
cylinder to the other. When the point pressing on the cylinder on which
the pattern is drawn is in contact with the metal surface of the cylinder, the
circuit of the battery is completed, and the cutting point is drawn back by
the keeper of the magnet from the surface of the cylinder to be engraved, so
that it will not cut into the cylinder; but when the point pressing on the
cylinder on which the pattern is drawn is in contact with the portion of the
cylinder coated with varnish, the circuit is broken, and the cutting point is
allowed to cut into the cylinder, and by this means, when the point has
travelled from one end of the cylinder to the other, the cylinder will be
engraved to the desired pattern. The arranging machinery for engraving with

page_text: several tools at the same time was also described, each tool being worked by a
separate electro-magnet and spring, and each magnet being worked from a
separate pattern cylinder.
Now one part of my Invention consists in arranging machinery similar to
that above described in such manner that two or more tools may be worked at
the same time from one pattern cylinder; two or more printing rollers or
cylinders may thus be engraved at the same time from one pattern cylinder, or
the same pattern may be repeated two or more times along the length of one
or more cylinders. For this purpose each tool is actuated by a separate
electro-magnet, and the point pressing against the surface of the pattern
cylinder is connected with a wire, to which one end of the coil of wire of each
magnet is connected, the other end of the coil of each magnet is connected to
a wire leading from one pole of a battery, and the pattern cylinder is as before
put in communication with a wire leading from the other pole of the battery;
by this means, when the point pressing against the surface of the pattern
cylinder is in contact with the metallic surface of the pattern cylinder, all the
magnets will simultaneously draw away the cutting points from the surface of
the cylinder or cylinders, but when the point is in contact with a portion of
the cylinder which is coated with varnish, the current will be broken, and all
the points will cut into the surface of the cylinder or cylinders.
Another part of my Invention consists in arranging machinery similar to
that above described in such manner that from two or more pattern cylinders;
each having a different design upon it, two or more cylinders may be engraved,
and the design engraved on each printing cylinder be repeated two or more
times along its length. For this purpose a separate cutting tool is employed
for every repetition of each design, and each cutting tool is actuated by a
separate electro-magnet, as in the machine above described.
Against the
circumference of each pattern cylinder a separate point is made to press, and
cach of these points has connected to it a wire, and each wire is in com-
munication with one end of each of the coils of wire of the electro-magnets for
actuating the cutting tools acting on the circumference of one printing cylinder,
the other ends of the coils of wire of the electro-magnets are connected to a
wire coming from one pole of a battery, the wire from the other pole of the
battery being in communication with each of the pattern cylinders. By this
means when the pattern cylinders and the cylinders to be engraved are caused
to rotate, and the points pressing on their circumferences moved in the
direction of their length, each cylinder will have engraved on it two or more
times along its length the pattern on the pattern cylinder, from which the
cutting tools acting on its surface are operated. In place of causing the

page_text: readily carried into ellect, I will proceed to describe the Drawings hereunto
annexed.
DESCRIPTION OF THE DRAWINGS.
The Drawings shew a machine constructed according to my Invention.
A, A, is the framing of the machine; B, B, carriage sliding on the frame A;
c, c, are holders for the tracers; there are seventeen of them to each cylinder,
and fixed in a plate by means of two screw bolts. D, D, plate fixed on the
carriage B, and moving with it; C, C, cylinders to be engraved; E, E,
bearings on which the cylinders turn and slide freely; the bearings are
supp.ted on a moveable foot resting on the framing A; F, F, moveable foot
on which the bearings E, E, slide; G, needle holder carried by the carriage B
and moving with it, a transverse rod connects the two needles, which should
be separated the one from the other by a non-conductor of electricity at 1, 1";
21, 2, small carriage serving to adjust the needles to the centre of the pattern;
31, 3, steel points; 4, 4", springs resting constantly on the pattern, and
which are in connection with one of the poles of the battery N; 6, 6, 6, 6,
bearings in which turn the pattern cylinders; these bearings rest on a plate
connected to the framing A; H is a crank transmitting movement through
two pinions a, a, to the axis 6, 6; one end of this axis gives motion to the
toothed wheels o, o, o. communicating with the screw j, which gives motion
to the carriage; the other end of this axis by the pinion transmits a
rotary motion to the cylinders and patterns. k, k, bearings of the axis 6, 6:
N, battery composed of as many elements as there are tracing points; d, d, d
positive pole connected to the springs 41, 4 of the pattern; this pole is also
fixed to the needle, and continues its course to the rod M, forming one of the
poles of the electro-magnet which work the tracers; c, e, negative pole always
in direct contact with the other rod; N, the second pole of the electro-magnet
P, patterns; each pattern is by preference formed of a metal cylinder mounted
on a wooden centre or other body which will not conduct electricity.
The

page_text: pattern desired to be produced is engraved on the metal cylinder by any
suitable means, and the engraved part is then filled up level with the original
surface of the cylinder with wax or other insulating matter sufficiently hard to
withstand the pressure of the points. As the patterns are represented on the
Drawings to be of the same size as the cylinders the gearing is arranged so
that the cylinders and patterns revolve at the same speed; if, on the contrary,
the patterns were three times smaller than the cylinders the patterns would
have to be revolved three times faster than the cylinders.
Description of the tracer holder:-A, iron framing; B, electro-magnet
mounted on the copper square C; D, wooden cross-bar on which the two poles
of the electro-magnet e, e, e, e, rest, both of which communicate with the two
rods M and N of the machine; C, copper cross bar on which is fixed the electro-
magnet; E, soft iron keeper which carries the tracer, oscillating on the framing
A; F, tracer holder, which can be regulated by the screw G; I, rod pressing on
the keeper E by means of the spring "; j, rod for limiting the movement of
the keeper by means of the screw ; L, screw for the purpose of advancing
or drawing back the tracer in its holder; M, M, screw for regulating the
movement of the keeper; q, the tracer. When the machine is in operation,
each time that the needles 31, 311, sliding on the pattern P come in contact
with the engraved portions of the pattern which are filled up with an insulating
matter, the electric circuit will be broken, and the electro-magnets no longer
acting by attraction on their keepers the tracers will be pressed by their
springs against the surface of the cylinders, whilst, on the contrary, each time
that the needles 31, 31, are in contact with the metallic parts of the pattern
the electric current will be re-established and the electro-magnets will draw
back the tracers from the cylinder so that they will no longer engrave its
surface; and this operation will continue until the carriage has moved from
one end to the other of the pattern to be reproduced when the pattern will have
been engraved several times along the cylinder.
In witness whereof, I, the said Aime Louis Eugene Breittmayer, have
hereunto set my hand and seal, this Sixth day of August, in the year of
our Lord One thousand eight hundred and sixty.
EUG. BREITTMAYER. (L.S.)

page_text: LETTERS PATENT to Aimé Louis Eugène Breittmayer, of No. 14, Rue de
Bruxelles, in the City of Paris, in the Empire of France, Merchant, for
the Invention of "IMPROVEMENTS IN MACHINERY FOR AND IN ENGRAVING THE
METALLIC SURFACES OF PRINTING ROLLERS OR CYLINDERS."
Sealed the 27th July 1860, and dated the 7th February 1860.
PROVISIONAL SPECIFICATION left by the said Aimé Louis Eugène
Breittmayer at the Office of the Commissioners of Patents, with his
Petition, on the 7th February 1860.
I, AIMÉ LOUIS EUGÈNE BREITTMAYER, of No. 14, Rue de Bruxelles, in the
City of Paris, in the Empire of France, Merchant, do hereby declare the
nature of the Invention for "IMPROVEMENTS IN MACHINERY FOR
ENGRAVING THE METALLIC SURFACES OF PRINTING ROLLERS OR CYLINDERS," to be
as follows:-
AND IN
In the Specification of a Patent granted to William Smith, dated the 18th
September 1857 (No. 2414), was described the following process of engraving
printing rollers or cylinders:-The desired pattern is first drawn on the cir-
cumference of a metal cylinder with an insulating varnish, the metal cylinder
is then put in communication with a wire leading from one pole of a battery,
and a point pressed by a spring against the surface of the cylinder is put in
communication with a wire leading from the other pole of the battery, this
wire being first coiled around a piece of iron, so as to form an electro-magnet
when, the circuit is completed. The keeper of this magnet is connected to a
diamond or other point constantly pressed against the circumference of the

page_text: cylinder to be engraved, by a spring of sufficient strength to cause the point to
cut a distance into the cylinder when the cylinder is rotated. Both cylinders
are then caused to rotate, and the points pressing on the circumference of
each cylinder are moved slowly from one end of the cylinder to the other.
When the point pressing on the cylinder on which the pattern is drawn is in
contact with the metal surface of the cylinder, the circuit of the battery is
completed, and the cutting point is drawn back by the keeper of the magnet
from the surface of the cylinder to be engraved, so that it will not cut into the
cylinder, but when the point pressing on the cylinder on which the pattern is
drawn is in contact with the portion of the cylinder coated with varnish, the
circuit is broken, and the cutting point is allowed to cut into the cylinder, and
by this means when the point has travelled from one end of the cylinder to the
other, the cylinder will be engraved to the desired pattern. The arranging
machinery for engraving with several tools at the same time was also described,
each tool being worked by a separate electro-magnet and spring, and each
magaet being worked from a separate pattern cylinder.
Now one part of my Invention consists in arranging machinery similar to
that above described, in such manner that two or more tools may be worked
at the same time from one pattern cylinder; two or more printing rollers or
cylinders may thus be engraved at the same time from one pattern cylinder,
or the same pattern may be repeated two or more times along the length of
one or more cylinders. For this purpose each tool is actuated by a separate
electro-magnet, and the point pressing against the surface of the pattern
cylinder is connected with a wire, to which one end of the coil of wire of each
magnet is connected, the other end of the coil of each magnet is connected to
a wire leading from one pole of a battery, and the pattern cylinder is as before
put in communication with a wire leading from the other pole of the battery.
By this means when the point pressing against the surface of the pattern
cylinder is in contact with the metallic surface of the pattern cylinder, all the
magnets will simultaneously draw away the cutting points from the surface of
the cylinder or cylinders; but when the point is in contact with a portion of
the cylinder which is coated with varnish, the current will be broken and all
the points will cut into the surface of the cylinder or cylinders.
Another part of my Invention consists in arranging machinery similar to
that above described, in such manner that from two or more pattern cylinders,
each having a different design upon it, two or more cylinders may be engraved,
and the design engraved on each printing cylinder be repeated two or more
times along its length. For this purpose a separate cutting tool is employed
for every repetition of each design, and each cutting tool is actuated by a

page_text: separate electro-magnet, as in the machine above described. Against the
circumference of each pattern cylinder a separate point is made to press, and
cach of these points has connected to it a wire, and each wire is in communi-
cation with one end of each of the coils of wire of the electro-magnets for
actuating the cutting tools acting on the circumference of one printing cylinder;
the other ends of the coils of wire of the electro-magnets are connected to a
wire coming from one pole of a battery, the wire from the other pole of the
battery being in communication with each of the pattern cylinders. By this
means when the pattern cylinders and the cylinders to be engraved are caused
to rotate, and the points pressing on their circumferences moved in the
direction of their length, each cylinder will have engraved on it two or more
times along its length the pattern on the pattern cylinder, from which the
cutting tools acting on its surface are operated. In place of causing the
cutting tools to cut into the cylinders the depth required for printing, I first
coat the cylinder with varnish, and then by the cutting tools remove the
varnish where the cylinder is to be engraved, and also a portion of the metallic
surface of the cylinder. The cylinder is then placed horizontally in a bath of
acid and water, in which there is also a plate of the same metal as the
cylinder. The cylinder is then put in communication with one pole of a
battery, and the metal plate with the other pole, by which means the
engraving will be bitten in.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Aimé Louis Eugène Breittmayer in the Great Seal Patent
Office on the 7th August 1860.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, AIMÉ
LOUIS EUGENE BREITTMAYER, of No. 14 Rue de Bruxelles, in the City of
Paris, in the Empire of France, Merchant, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Seventh day of February, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-third year of Her reign,
did, for Herself, Her heirs and successors, give and grant unto me, the said
Aimé Louis Eugène Breittmayer, Her special licence that I, the said Aimè
Louis Eugène Breittmayer, my executors, administrators, and assigns, or
such others as I, the said Aimè Louis Eugène Breittmayer, my executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein

page_text: expressed, should and lawfully might make, use, exercise, and vend, within
the United Kingdom of Great Britain and Ireland, the Channel Islands, and
Isle of Man, an Invention for "IMPROVEMENTS IN MACHINERY FOR AND IN
ENGRAVING THE METALLIC SURFACES OF PRINTING ROLLERS OR CYLINDERS," upon
the condition (amongst others) that I, the said Aimé Louis Eugène Breitt-
mayer, my executors or administrators, by an instrument in writing under my,
or their, or one of their hands and seals, should particularly describe and
ascertain the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal Patent Office
within six calendar months next and immediately after the date of the said
Letters Patent.
NOW KNOW YE, that I, the said Aimé Louis Eugène Breittmayer, do
hereby declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following statement thereof, that is to say :-
In the Specification of a Patent granted to William Smith, dated the 18th
September 1857 (No. 2414), was described the following process of engraving
printing rollers or cylinders:-The desired pattern is first drawn on the
circumference of a metal cylinder, with an insulating varnish; the metal
cylinder is then put in communication with a wire leading from one pole of a
battery, and a point pressed by a spring against the surface of the cylinder is
put in communication with a wire leading from the other pole of the battery,
this wire being first coiled around a piece of iron so as to form an electro-
magnet when the circuit is completed. The keeper of this magnet is con-
nected to a diamond or other point constantly pressed against the circum-
ference of the cylinder to be engraved by a spring of sufficient strength to
cause the point to cut a distance into the cylinder when the cylinder is rotated.
Both cylinders are then caused to rotate, and the points pressing on the
circumference of each cylinder are moved slowly from one end of the
cylinder to the other. When the point pressing on the cylinder on which
the pattern is drawn is in contact with the metal surface of the cylinder, the
circuit of the battery is completed, and the cutting point is drawn back by
the keeper of the magnet from the surface of the cylinder to be engraved, so
that it will not cut into the cylinder; but when the point pressing on the
cylinder on which the pattern is drawn is in contact with the portion of the
cylinder coated with varnish, the circuit is broken, and the cutting point is
allowed to cut into the cylinder, and by this means, when the point has
travelled from one end of the cylinder to the other, the cylinder will be
engraved to the desired pattern. The arranging machinery for engraving with
ing

page_text: several tools at the same time was also described, each tool being worked by a
separate electro-magnet and spring, and each magnet being worked from
a separate pattern cylinder.
Now one part of my Invention consists in arranging machinery similar to
that above described in such manner that two or more tools may be worked at
the same time from one pattern cylinder; two or more printing rollers or
cylinders may thus be engraved at the same time from one pattern cylinder, or
the same pattern may be repeated two or more times along the length of one
or more cylinders. For this purpose each tool is actuated by a separate
electro-magnet, and the point pressing against the surface of the pattern
cylinder is connected with a wire, to which one end of the coil of wire of each
magnet is connected, the other end of the coil of each magnet is connected to
a wire leading from one pole of a battery, and the pattern cylinder is as before
put in communication with a wire leading from the other pole of the battery;
by this means, when the point pressing against the surface of the pattern
cylinder is in contact with the metallic surface of the pattern cylinder, all the
magnets will simultaneously draw away the cutting points from the surface of
the cylinder or cylinders, but when the point is in contact with a portion of
the cylinder which is coated with varnish, the current will be broken, and all
the points will cut into the surface of the cylinder or, cylinders.
a
Against the
Another part of my Invention consists in arranging machinery similar to
that above described in such manner that from two or more pattern cylinders,
each having a different design upon it, two or more cylinders may be engraved,
and the design engraved on each printing cylinder be repeated two or more
times along its length. For this purpose a separate cutting tool is employed
for every repetition of each design, and each cutting tool is actuated by
separate electro-magnet, as in the machine above described.
circumference of each pattern cylinder a separate point is made to press, and
each of these points has connected to it a wire, and each wire is in com-
munication with one end of each of the coils of wire of the electro-magnets for
actuating the cutting tools acting on the circumference of one printing cylinder,
the other ends of the coils of wire of the electro-magnets are connected to a
wire coming from one pole of a battery, the wire from the other pole of the
battery being in communication with each of the pattern cylinders. By this
means when the pattern cylinders and the cylinders to be engraved are caused
to rotate, and the points pressing on their circumferences moved in the
direction of their length, each cylinder will have engraved on it two or more
times along its length the pattern on the pattern cylinder, from which the
cutting tools acting on its surface are. operated. In place of causing the

page_text: cutting tools to cut into the cylinders the depth required for printing, I first
coat the cylinder with varnish, and then by the cutting tools remove the
varnish where the cylinder is to be engraved, and also a portion of the metallic
surface of the cylinder. The cylinder is then placed horizontally in a bath of
acid and water, in which there is also a plate of the same metal as the
cylinder. The cylinder is then put in communication with one pole of a
battery, and the metal plate with the other pole, by which means the engraving
will be bitten in.
And in order that my said Invention may be most fully understood, and
readily carried into effect, I will proceed to describe the Drawings hereunto
annexed.
DESCRIPTION OF THE DRAWINGS.
The Drawings shew a machine constructed according to my Invention.
A, A, is the framing of the machine; B, B, carriage sliding on the frame A;
c, c, are holders for the tracers; there are seventeen of them to each cylinder,
and fixed in a plate by means of two screw bolts. D, D, plate fixed on the
carriage B, and moving with it; C, C, cylinders to be engraved; E, E,
bearings on which the cylinders turn and slide freely; the bearings are
supported on a moveable, foot resting on the framing A; F, F, moveable foot
on which the bearings E, E, slide; G, needle holder carried by the carriage B
and moving with it, a transverse rod connects the two needles, which should
be separated the one from the other by a non-conductor of electricity at 1', 1";
21, 2, small carriage serving to adjust the needles to the centre of the pattern;
31, 3, steel points; 4', 4", springs resting constantly on the pattern, and
which are in connection with one of the poles of the battery N; 6, 6, 6, 6,
bearings in which turn the pattern cylinders; these bearings rest on a plate
connected to the framing A; H is a crank transmitting movement through
two pinions a, a, to the axis 6, 6; one end of this axis gives motion to the
'toothed wheels o, o, o, communicating with the screw j, which gives motion
to the carriage; the other end of this axis by the pinion i transmits a
rotary motion to the cylinders and patterns. k, k, bearings of the axis 6, 6
N, battery composed of as many elements as there are tracing points; d, d, d,
positive pole connected to the springs 4', 4" of the pattern; this pole is also
fixed to the needle, and continues its course to the rod M, forming one of the
poles of the electro-magnet which work the tracers; e, e, negative pole always
in direct contact with the other rod; N, the second pole of the electro-magnet
.P, patterns; each pattern is by preference formed of a metal cylinder mounted
on a wooden centre or other body which will not conduct electricity. The

page_text: pattern desired to be produced is engraved on the metal cylinder by any
suitable means, and the engraved part is then filled up level with the original
surface of the cylinder with wax or other insulating matter sufficiently hard to
withstand the pressure of the points. As the patterns are represented on the
Drawings to be of the same size as the cylinders the gearing is arranged so
that the cylinders and patterns revolve at the same speed; if, on the contrary,
the patterns were three times smaller than the cylinders the patterns would
have to be revolved three times faster than the cylinders.
Description of the tracer holder.---A, iron framing; B, electro-magnet
mounted on the copper square C; D, wooden cross-bar on which the two poles
of the electro-magnet e, e, e, e, rest, both of which communicate with the two
rods M and N of the machine; C, copper cross bar on which is fixed the electro-
magnet; E, soft iron keeper which carries the tracer, oscillating on the framing A;
F, tracer holder, which can be regulated by the screw G; I, rod pre-sing on
the keeper E by means of the spring "; j, rod for limiting the movement of
the keeper by means of the screw j"; L, screw for the purpose of advancing
or drawing back the tracer in its holder; M, M, screw for regulating the
movement of the keeper; 9, the tracer.
When the machine is in operation,
each time that the needles 3', 3", sliding on the pattern P come in contact
with the engraved portions of the pattern which are filled up with an insulating
matter, the electric circuit will be broken, and the electro-magnets no longer
acting by attraction on their keepers the tracers will be pressed by their
springs against the surface of the cylinders, whilst, on the contrary, each time
that the needles 3', 3", are in contact with the metallic parts of the pattern
the electric current will be re-established and the electro-magnets will draw
back the tracers from the cylinder so that they will no longer engrave its
surface; and this operation will continue until the carriage has moved from
one end to the other of the pattern to be reproduced when the pattern will
have been engraved several times along the cylinder.
In witness whereof, I, the said Aimé Louis Eugène Breittmayer, have
hereunto set my hand and seal, this Sixth day of August, in the year
of our Lord One thousand eight hundred and sixty.
EUG. BREITTMAYER.
(L.S.)