An Improved Appliance for Printing Vignette Photographs.
Year: 1892

page_text: Date of Application, 15th Sept., 1892
Complete Specification Left. 15th July, 1893-Accepted, 15th Sept., 1893
PROVISIONAL SPECIFICATION.
An Improved Appliance for Printing Vignette Photographs.
I, JOHN COULSON ROWBOTHAM, of 115, Thornton Road, Bradford, in the
County of York, Sheet Metal Worker, do hereby declare the nature of this
invention to be as follows:-
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This invention relates to an improved appliance to be used in printing vignette
photographs and its object is to more perfectly soften or tone down the outline of
vignettes.
For this purpose I employ a zinc or other sheet metal plate having an opening
or aperture approximately the size and shape of the vignette. The margin of
this opening or aperture is raised or curved upwards so as to "dish" that part of
the plate and the raised or curved portion is perforated with one or more rows
of holes which may be reduced in size and number as their distance from the edge
of the said opening or aperture is increased.
By this arrangement the light admitted beneath the margin of the aperture is
admirably diffused and softened for vignette purposes.
Dated this 14th day of September 1892.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
An Improved Appliance for Printing Vignette Photographs.
1, JOHN COULSON ROWBOTHAM, of 115, Thornton Road, Bradford, in the
County of York, Sheet Metal Worker, 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 an improved appliance to be used in printing vignette
photographs and its object is to more perfectly soften or tone down the outline of
vignettes.
For this purpose I employ a zinc or other sheet metal plate having an opening
or aperture approximately the size and shape of the vignette. The margin of this
opening or aperture is raised or curved upwards so as to "dish" that part of the
plate and the raised or curved portion perforated with one or more rows of
holes which may be reduced in size and number as their distance from the edge of
the said opening or aperture is increased.
By this arrangement the light admitted beneath the margin of the aperture is-
admirably diffused and softened for vignette purposes.
Reference is to be had to the accompanying sheet of drawings forming a part of
this Specification in which similar letters of reference indicate corresponding parts
in each figure.
Figure 1, represents a plan view of improved vignetting appliance.
Figure 2, is a longitudinal section on the broken line a, b Figure 1.
Figure 3, is an end view.
The letter A represents the sheet metal plate and B represents the opening in
the plate to admit the full light to the print. The margin C of the opening is
raised and a series of holes D and d are made in the margin. The holes D are
made nearer to the edge of the opening B and are larger than the holes d. The
opening B may be made any suitable shape instead of oval.

page_text: 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 :
A vignetting appliance consisting of a metal plate formed and perforated as
herein shown and described and illustrated in the accompanying drawings.
Dad him 10th day of T.... 1002
DRACUP & NOWELL,
Bradford, Agents.