Improvements in Vignette Mediums for Photography.
Year: 1890

page_text: Date of Application, 28th June, 1890
Complete Specification Left, 28th Mar., 1891-Accepted, 2nd May, 1891
PROVISIONAL SPECIFICATION.
Improvements in Vignette Mediums for Photography.
I, GEORGE JOSEPH SERSHALL of No. 373 Lodge Road, Birmingham in the
County of Warwick, Artist, do hereby declare the nature of this invention to be as
follows:-
This invention relates to the production of improved mediums to be employed in
printing photographic vignettes, and is intended to supersede the use of vignette
papers for photography, similar to those described in the Specification of an
invention for which a British Patent was granted to me in the year 1886 and
numbered 9155.
During a practical test, extending over a considerable period of time, of vignette
papers produced by the method described in the Specification of my Patent of 1886,
I found that the ultimate or complete drying of the varnish employed in that
process caused the transparent or partly transparent parts to become much obscured,
and that spots and patches were formed and appeared on those parts of the said
vignette papers where the transparency or partial transparency was required and
intended to be regular and uniform.
To obviate or remove this great objection, and in accordance with this invention,
I combine by lithographic printing, or other suitable means non-actinic color with
the surface or surfaces of transparent or partly transparent celluloid films, so as to
render or make certain parts, as may be required, of the said celluloid films, cither
opaque, or partly or sufficiently opaque for use in the process of the photographic
printing of vignettes: and I obtain the required gradations of tint from the opacity
of the said non-actinic color to transparency or partial transparency at its faintest
edge by the "softening off" by hand by means of a brush-or other suitable
medium-to transparency or partial transparency as aforesaid.
Dated this Twenty-seventh day of June 1890.
GEORGE JOSEPH SERSHALL.
COMPLETE SPECIFICATION.
Improvements in Vignette Mediums for Photography.
I, GEORGE JOSEPH SERSHALL of 373, Lodge Road Hockley Birmingham,
Artist 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 :-
This invention relates to the production of an improved medium to be employed
in printing photographic vignettes, and is intended to supersede the use of vignette
papers for photography similar to those described in the Specification of an
invention for which a British Patent was granted to me in the year 1886, and
numbered 9155.
During a practical test extending over a considerable period of time of vignette
papers produced by the method described in the said Specification of 1886,
I found that the ultimate or complete drying of the varnish employed in that
process caused the transparent, or partly transparent parts to become much
obscured and that spots and patches were formed and appeared on those parts of
the said vignette papers where the transparency or partial transparency was
required and intended to be regular and uniform.
To obviate or remove this great objection to the employment or use of such said
Price Ad

page_text: vignette papers, and in accordance with this said invention, I combine by litho-
graphic printing or by any other suitable means non-actinic colour with the surface
or surfaces of transparent or partly transparent celluloid films so as to render
or make certain parts of the said surface or surfaces, as may be required of
the said celluloid films either opaque, or partly or sufficiently opaque for use in the
process of the photographic printing of vignettes; and I obtain the required
gradations of tint from the opacity of the said non actinic colour to transparency or
partial transparency at its faintest edge by the softening off" by any suitable
means of the said non-actinic colour to transparency or partial transparency as
aforesaid.
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:
The combination of non-actinic colour with the surface or surfaces or trans-
parent or partly transparent celluloid films substantially as and for the purpose
herein described.
Dated this Twenty-sixth day of March 1801
GEORGE JOSEPH SERSHALL.