An Improved Method of Producing Pictures upon Glass by Lithography in one or more colours.
Year: 1897

page_text: Date of Application, 9th Dec., 1897
Complete Specification Left, 29th Apr., 1898-Accepted, 18th June, 1898
An Improved Method of Producing Pictures upon Glass by
Lithography in one or more colours.
I, KARL MÄRTEN, of 3, Lugeck, Vienna, Austria, Manufacturer of Glass Pictures,
do-hereby declare the nature of this invention to be as follows;-
-
This invention relates to an improved method of producing pictures upon glass
by lithography in one or more colours, consisting in putting successively upon
a glass plate previously prepared to receive lithographic colours, single coloured
impressions printed upon paper prepared not to absorb colour, from plates which are
each furnished with a different colour.
The said printed glass plates are produced by cleansing the glass plates thor-
oughly, coating the respective side with a mixture of lac copal, lac darmar and
turpentine.
The proportion of these ingredients may be varied within certain limits and con-
sist of 2-4 parts lac copal, 1-3 parts lac darmar and 05-2 parts turpentine.
A suitable colour finely powdered (say zinc or lead colour) may be added to
the said mixture in accordance with the degree of transparency it is desired to give
the glass plate to be produced.
The glass plate coated with this mixture is dried, then carefully smoothed or
ground and thereby the blisters, brush lines or the like uneven parts which may
exist, removed after which the plate is ready for the reception of the colour.
For this purpose an impression is printed upon thin paper which does not absorb
colour, from the lithographic plate supplied with the first or ground colour, then
placed upon the glass plate, damped and fastened thereto by working a roller over
it and finally the paper drawn off the glass plate, the lithographic colour being
left on the same.
The plate thus furnished with the first colour is dried and a second, third or
further colour put on in the same manner until the picture is completed.
The finished plate is then again dried and coated with a face lac or varnish.
The colours used in the described method may be the same as generally used in
lithographic colour printing but it is advisable to add a considerable amount of
varnish and a siccative to expedite the drying of the various colours.
Dated this 8th day of December 1897.

page_text: An improved of rounding rictures upon Glass by
Lithography in one or more colours.
I, KARL MÄRTEN, of 3, Lugeck, Vienna, Austria, Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following state-
ment:
This invention relates to an improved method of producing pictures upon glass
by lithography in one or more colours, consisting in transferring successively upon
u glass plate previously prepared to receive lithographic colours, single coloured
impressions printed upon paper prepared not to absorb colour, from plates which are
each furnished with a different colour.
Tho said printed glass plates are produced by cleansing the glass plates thor-
oughly, coating the side to be printed on with a mixture of lac copal, lac darmar
and turpentine.
The proportion of these ingredients may be varied within certain limits and con-
sist of 24 parts lac copal, 1-3 parts lac darmar and 05-2 parts turpentine
A suitable colour finely powdered (say zinc or lead colour) may be added to
the said mixture in accordance with the degree of transparency it is desired to give
the glass plate to be produced.
The glass plate coated with this mixture is dried, then carefully smoothed or
ground and thereby the blisters, brush lines or the like uneven parts which may
exist, removed after which the plate is ready for the reception of the colour.
For this purpose an impression is printed upon thin paper which does not absorb
colour, from the lithographic plate supplied with the first or ground colour, then
placed upon the glass plate, damped and fastened thereto by working a roller over
it and finally the paper drawn off the glass plate, the lithographic colour being
left on the same.
The plate thus furnished with the first colour is dried and a second, third or
further colour put on in the same manner until the picture is completed
The finished plate is then again dried and coated with a face lac or varnish.
The colours used in the described method may be the same as generally used in
lithographic colour printing but it is advisable to add a considerable amount of
varnish and a siccative to expedite the drying of the various colours.
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 is;-
1st. A method of producing pictures upon glass by lithography in one or more
colours, consisting in transferring single coloured impressions printed by litho-
graphy in the usual way upon paper which does not absorb colour, successively
upon glass plates previously prepared to receive lithographic colours, all substan-
tially as set forth.
2nd. In the method specified in the preceding claim, the preparation of the glass
plates to be printed upon for the reception of the lithographic colours, by coating
the respective side with a'mixture of

page_text: to which mixture a suitable quantity of colour may be added, all substantially as
set forth.
Dated this 28th day of April 1898.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.