Method of and Apparatus for Re-producing Photographs.
Year: 1891

page_text: Date of Application, 5th May, 1891-Accepted, 9th Apr., 1892
COMPLETE SPECIFICATION.
Method of and Apparatus for Re-producing Photographs.
We BERNARD KRANTZ and HERMANN ZEISSLER both of 13 Bunhill Row in
the City of London Lithographic Artists, 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 has for its object the reproduction of photographic pictures in ink
at a small cost.
"
According to this invention, we take from nature or from pictures or prints a
negative either in the usual way, or with a Kaster or grained plate interposed
between the lens and the sensitive plate.
A transfer print is made from the negative by any of the well-known methods.
We then take a piece of calico and spread on one side thereof a film of sensitive.
gelatine. We transfer the print to the gelatine (by exposure to light) and high
etch the latter by means of glycerine and liquid ammonia, thus producing what we
call the calico and gelatine block.
When finished the calico and gelatine block is mounted on a piece of wood or
metal provided with a handle, to enable it to be used as a hand stamp, and then
prints or impressions can be taken from it in the usual way.
Although any ordinary form of hand stamp will serve to carry our calico and
gelatine block the best for the purpose is our improved self inking hand stamp,
which we will now describe.
In the accompanying drawing,
Fig. 1 shows elevation and Fig. 2, sectional elevation of a self inking apparatus
for reproducing photographs constructed according to our invention.
The same letters denote the same parts in both figures.
a is the calico and gelatine block.
>> is felt to distribute ink equally over film.
c, glass tube to contain ink.
l
wooden case, fitted with screwed cap e to change block and replenish ink tube.
, metal tube, to which are pivotted links h. h. which links at their opposite end
are pivotted to tube i forming a parallel motion, to ensure picture being parallel
at moment of printing with block or pad j on bedplate k. is thumb screw to
clamp tube i to pillar m. nis ring of thin india rubber, to prevent leakage of ink
round sides of the felt. Ordinary india rubber stamp ink with a little glycerine
added to keep it moist, is very suitable for use with this apparatus.
The calico and gelatine blocks may be made from either positive or negative
transfers, if the latter, a portrait comes out as in life viz. :-hair and eyes dark and
face light, if from a positive the light and shade are reversed.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is :-
(I) The improved method of reproducing photographic pictures, substantially as
described.
(II) The improved stamp or block, consisting of a hollow handle with an ink
receptacle therein, in communication with an inking pad, in contact with a block

page_text: or die composed of calico and gelatine, substantially as described and for the
purpose stated.
Dated the 5th day of May 1891.
ERNEST SALAMAN,
61 & 62, Chancery Lane, London, Agent for the Applicants.