A NEW OR IMPROVED APPARATUS OR ELECTRO APPLIANCE FOR TOUCHING UP PHOTOGRAPHIC PICTURES AND OTHER OBJECTS ALSO APPLICABLE FOR ENGRAVING " PURPOSES
Year: 1883

page_text: PROVISIONAL SPECIFICATION left by Edward Griffith Brewer at the Office of
the Commissioners of Patents on the 24th September 1883. Communicated
to him from abroad by Messieurs J Geesbergen, and La Societe Geruzet Freres
all of Brussels Belgium.
EDWARD GRIFFITH BREWER of 33 Chancery Lane in the County of Middlesex
"A NEW OR IMPROVED APPARATUS OR ELECTRO APPLIANCE FOR TOUCHING UP
PHOTOGRAPHIC PICTURES AND OTHER OBJECTS ALSO APPLICABLE FOR ENGRAVING
"
PURPOSES (A communication to me from abroad by Messieurs J Geesbergen, and
La Societe Geruzet Freres all of Brussels Belgium)
The after touch on photographic pictures consists in the attenuation of the
rugosity of the skin produced by transparencies on the negative as well as
unpleasant prominences on the face.
A skilful toucher up will then join in the just appreciation of the relative value
of the lights and shades a great delicacy of the hand in order not to exceed the
object.
According to this invention an electro toucher up is produced,which mechanically
produces a fine dotting by the vibration of the armature of an electro magnet
carried on a pencil. All that is necessary is to place lightly this latter on the part
of the proof the opacity of which is to be increased to obtain a good result without
fearing what often happens a too prominent or pronounced touching thereby
destroying the anatomy of the face.
It will be easily understood from what has been said that the electric vibrations
are regular. The work will be thus divested from the nervous influence of the
person doing it; it will be much more correct and more regular besides the rapidity
of execution will be increased to a very great degree.
The apparatus is composed of a bed consisting of a cupboard or case for containing
the electric piles; on the top of this bed a support is provided carrying a balanced
rod having counterweight and regulating screw; at the other end of this balance
is suspended by means of a spring an electro retoucher; this latter receives the
electric current by means of a flexible connection having two conductors coming
from an aperture formed in the top of the bed; on this same bed is placed a
commutator to distribute more or less of the power desired to be given to the electric
current.

page_text: It will be understood that when an electric current is brought into the electro
I magnet its armature will oscillate and will cause a block or stock to vibrate
in a corresponding direction to which the pencil carrier is fitted which is retained
by a movable spring giving flexibility to it; the pencil carrier slides in a tube in
which is held by means of a ring, a helical spring carrying a rod one end of which
is fitted in the head of the pencil carrier. A collar is provided with a screw
serving to regulate the course of the pencil; the tube itself carries a pencil carrier
in which the pencil is placed; the pencil or lead is held by a screw.
be understood that by these combinations the pencil will sharply and lightly
puncture.
It will
In order to give greater facility in the movement of the apparatus a bridle is
jointed to the points, that is to say to its point of contact with the electro retoucher
and to its connection with the suspension spring. There is a regulating screw on
the armature provided with a spring for obtaining or producing by its vibration
the rapid puncturing movement. The pencil carrier may be balanced in a tube
having at its end a tail piece against the bend of which a projecting piece fitted to
the end of the armature strikes, by this means the pencil oscillates from top to
bottom to give strokes instead of dots or punches.
A small spring is placed inside the tube and bears on the pencil carrier to
push the latter upwards when the armature goes towards the bottom; the pencil
carrier oscillates on a ring traversed by a pivot.
The invention may also be applied as a tool for engravers,