improvements in or relating to Frinting
Year: 1895

page_text: Date of Application, 25th Feb., 185
Complete Specification Left, 10th Oct., 1895-Accepter, 16th Nov., 1895
improvements in or relating to Frinting
A communication from CÉSAR FELIX Josz, Civil Engineer, of Brussels, in the
Kingdom of Belgium.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Mildlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
The apparatus constructed according to this invention comprises two preferably
iron frames one of which the interior one. is smaller than the outer frame, and
secured thereto by two pivots permitting of its free revolution within the space of
the external frame.
The iouer frame carries a metal sheet covered recto et verso with water-proofed
material (india-rubber or equivalent). A metallic hinged plate or tympan capable
of being raised and lowered serves as a protection during the impression. The
exterior frame is furnished at one end with hinges attached to bolts so as to be
fixed on the press carriage of the hand-press. This exterior is furnished at its
opposite or outer end with two set-screws the object of which is to regulate the
distance of the surface of the inner frame from that of the stone, type, or matrix
placed on the press-carriage, and from which an impression is to be taken.
The pressure to be applied to the plate of the apparatus (as will be explained
further on) may be obtained by means of the ordinary presser bar of lithographic
presses. However, in order as far as possible to suppress the resistance, the
ordinary flat wooden bar is replaced by a cylindrical roller either of wood or of
metal, with or without a rubber covering.
"
The operation of the before described apparatus is as follows:-The lithographic
stone, the typo-cliché or phototypic matrix, of which a print is to be taken on
metal, being fixed, in the carriage of the hand-press, so as to be immovable in all
directions the " ⚫ Lithometallograph apparatus (as it is preferably called) is fixed
to the press-carriage; the stone, block, or matrix is inked, and thereon is lowered
the outer frame carrying the inner frame. On the latter, again, is lowered the
plate or tympan and the pressure is applied in the ordinary way. Then the frame
is raised and the inner frame is turned half-way round so as to bring the printed
surface uppermost.
While the uplifted apparatus rests against the press-frame,
the stone, block, or matrix is inked afresh, and the frame is once more lowered
the
upon it, so as to bring the unprinted side into contact with it; then, upon upper
side thereof, carrying the preceding imprint, is laid the metal sheet on which that
is to be printed off, and the plate or tympan is lowered thereon and the pressure
applied as before upon the whole.
On lifting the plate or tympan and the metal sheet beneath, from the upper-side
of the inner frame this is found to have received a counter-drawn impression tukeu
off the rubber surface of said frame whereon it had previously been printed; while,
at the same time, the lower rubber-surface of the frame has received, from the
stone, block, or matrix another impression, to be transferred, at the next working
of the press, to another metallic plate, and so on.
It follows, therefore, thut by the successive semi-rotations of the inner frame and
applying thereto a series of metallic sheets, in regular alternation, one obtains au

page_text: uninterrupted series of impressions of the print to be transferred, and of the
transferred imprint, upon the metal plate.
For the production in chromo with any number of colours, by a corresponding
number of stones, blocks, or matrices, all that is needed is to proceed by
repeating the above process therewith in the customary manner.
The same purpose
may also be served by fixing a special mechanical arrangement on the frame of the
apparatus.
Among the advantages resulting from the use of the "Litho-metallograph"
apparatus may be enumerated the following :―
This apparatus allows the execution with the hand-press of black or coloured
impressions upon metals and other similar surfaces; which has previously been
possible only with special double-cylinder lithographic presses, at a very high
price.
By reason of the time and cost of labour required for setting in operation
a printing process on metal with such a machine, it has hitherto been impossible to
execute the work of printing on metal in limited numbers, under approachable
conditions as to price.
"
The employment of the " Litho-metallograph will entirely dispense with the
costly and onerous acquisition of one of these special machines for printing on
metal, and enable printers in a small way of business to undertake that class of
work with the ordinary hand-press, and even for a restricted number of pulls,
under exactly similar conditions to ordinary printing on paper.
Dated this 25th day of February 1895.
BOULT & WADE,
Agents for the Applicant.
A communication from CÉSAR FELIX Josz, Civil Engineer, of Brussels, in the
Kingdom of Belgium.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, 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 apparatus constructed according to this invention as shown in Figures 1
and 3 of the accompanying drawings comprises two preferably iron frames E and C
one (C) of which is smaller than and inside of the other (E), and secured thereto
by two pivots p (shown in detail in Figures 5 and 6) permitting of its free revolution
within the space of the external frame E.
The inner frame C carries a metal sheet covered on both sides with water-proof
material (indiarubber or equivalent). A metallic hinged plate or tympan g
Figures 1 and 3 mounted on hinges i so as to be capable of being raised and
lowered serves as a protection during the impression. The exterior frame E is
furnished at one end with hinges (Figures 1, 3, 7 and 8) attached to bolts so as to
be fixed on the press carriage of the hand-press as shown particularly in Figures 7
and 8. This exterior frame is furnished at its opposite or outer end with two set-
Fcrews the object of which is to regulate the distance of the surface of the inuer
trame C from that of the stone, type, or nutrix P' placed on the press-carriage and
from which an impression is to be taken.
The pressure is to be applied to the plate or tympan of the apparatus (as is
explained further on) may be obtained by means of the ordinary presser bar of
lithographic presses. However, in order as far as possible to suppress the resistance,

page_text: the ordinary flat wooden bar is replaced by a cylindrical roller R Figures 1 and 2,
either of wood or of metal, with or without a rubber covering.
The operation of the before described apparatus is as follows;-The lithographic
stone, the type-cliché or phototype matrix P, of which a print is to be taken on
metal, being fixed, in the carriage of the hand-press, so as to be immovable in all
directions the "Lithometallograph" apparatus (as it is preferably called) is fixed
to the press-carriage (Figures 1 and 3); the stone, block or matrix is inked, and
thereon is lowered the outer frame E carrying the inner frame C. On the latter
again is lowered the plate or tympan g and the pressure is applied in the ordinary
way. Then the frame E is raised and the inner frame C is turned halfway round
so as to bring the printed surface uppermost. While the uplifted apparatus E
rests against the press-frame, the stone, block, or matrix is inked afresh, and the
frame C is once more lowered upon it, so as to bring the unprinted side into contact
with it; then, upon the upper side thereof, carrying the preceding imprint, is laid
the metal sheet on which that is to be printed, and the plate or tympan g is lowered
thereon and the pressure applied as before upon the whole.
On lifting the plate or tympan g and the metal sheet beueath, from the upper
side of the inner frame C this is found to have received a counter-drawn impression
taken off the rubber surface of said frame whereon it had previously been printed;
while, at the same time, the lower rubber-surface of the frame has received, from
the stone, block or matrix another impression, to be transferred, at the next working
of the press, to another metallic plate, and so on.
It follows therefore that by the successive semi-rotations of the inner frame C
and applying thereto a series of metallic sheets, in regular alternation, one obtains
au uninterrupted series of impressions of the print to be transferred, and of the
transferred imprint, upon the metal plate.
For the production in chromo with any number of colours, by a corresponding
number of stones, blocks, or matrices, all that is needed is to proceed by repeating
The same purpose may
the above process therewith in the customary manner.
also be served by fixing a special mechanical arrangement on the frame of the
apparatus.
Among the advantages resulting from the use of the "Litho-metallograph"
apparatus may be enumerated the following:-
--
This apparatus allows the execution with the hand-press of black or coloured
impressions upon metals and other similar surfaces which has previously been
possible only with special double-cylinder lithographic presses, at a very high
price.
By reason of the time and cost of labour required for setting in operation a
printing process on metal with such a machine, it has hitherto been impossible to
execute the work of printing on metal in limited numbers, under approachable
conditions as to price.
The employment of the "Litho-metallograph" will entirely dispense with the
costly and onerous acquisition of one of those special machines for printing on
metal, and enable printers in a small way of business to undertake that class of
work with the ordinary hand-press, and even for a restricted number of pulls,
under exactly similar conditions to ordinary printing on paper.
Having now particularly described and ascertained the nature of the said
invention, as communicated to me by my foreign correspondent, and in what
manner the same is to be performed, I declare that what I claim is ;-
1. Printing on metal and like surfaces by litho-typo- and photo-type hand-
presses by means of a device comprising a frame or plate covered on both faces
with rubber or its equivalent the frame being pivotted within an outer frame
secured to the carriage of the press so that at one and the same operation there
may be obtained an impression from the stone block or matrix on the indiarubber
or equivalent surface and the counter-drawn transfer thereof on metallic or other
surfaces substantially as described.

page_text: 2. The combination and arrangement of parts constituting the complete device
for use
on printing presses substantially as described and illustrated in the
accompanying drawings.
Dated this 10th 1005
BOULT & WADE,
Agents for the Applicant.