Improvements in and connected with Apparatus for Retouching Photographic Negatives and the like.
Year: 1895

page_text: Date of Application, 7th May, 1895-Accepted, 8th June, 1895
COMPLETE SPECIFICATION.
Improvements in and connected with Apparatus for Retouching
Photographic Negatives and the like.
I, CHITTICK BROWN MORTLAND, of No. 304, North Eighth Street, City of
St Louis, State of Missouri, United States of America, Gentleman, do hereby
declare the nature of this invention and in what mauner the same is
performed, to be particularly described and ascertained in and by the following
statement
Figme is a front elevational view of the motor;
to be
Figure 2 is a side elevational view of the motor-wheel showing the manner of
adjusting the stroke of the piston,
Figure 3 is a sectional view of the pencil, and
Figure 4 is a similar view of the pencil, taken at right angles to the line of
section of Fig. 3.
My invention contemplates the use of an as a power medium, which an is forced
in behind, and withdrawn from a piston, which piston imparts an oscillating
movement to a pivoted pencil-carrying 1od, and in this manner, I not only produce
a stippling effect, but, also, a stroke. The production of both these strokes in a
single instrument has not been accomplished heretofore, to my knowledge, and I
consider it an essential and important feature of my invention.
In the drawings, A indicates a motor, shown as an electric motor, the fly-wheel B
of which, is formed with a transversely disposed dovetail or T-groove, in which is
slidingly mounted a block C. The piston rod Dis mounted on this bloch, and the
whole is adjusted toward or from the axis of the wheel by a binding screw E,
which locks the block in place, but permits free movement of the piston rod
thercon.
Fndicates a cylinder, which is pivoted to the base of the motor stand, in which
cylinder works a piston head on rod D. Leading from the lower end of the piston
15 a nipple to which is attached a flexible pipe, in the other end of which the
nipple on the pencil is inserted. As the piston reciprocatos in cylinder F, it forces
the air through the pipe, in its downward movement, and as the piston rises, it
draws the air back or after it.
Gindicates the pencil, in the upper end of which is arranged a cylinder II, in
which reciprocates a piston I, preferably at right angles to the pencil. A mipple /
g oranged at one end of the cylinder, to which the flexible pipe from cylinder F
is connected.
Extending from the piston I is a rod or projection J, to which is pivotally
connected the pencil carrying rod K Of course it is understood that the
projection J could be dispensed with and the pencil-carrying rod attached ducotly
to the piston, or, for that matter, a flexible diaphragm could be substituted for the
piston I and the pencil-cariying rod be operated thereby. The pencil-carrying
od 18 pivoted in the pencil shell as at k, in the outer end of which iod is received
the pencil point, secured thereto or therein in any suitable manner.
To adjust the stroke of the pencil-cariying rod, I mount in the shell at some
convenient point an abutting screw L, whose function and operation is well
Inderstood.
I also prefer to thicken the metal of the lower end of the shell, to guide the lower
end of the pencil-carrying iod in its oscillations.

page_text: If it is desired, to give great force to the strokes of the pencil, the pivotal point
of the piston rod D is moved away from the axis of wheel B, which will give to the
piston in cylinder F a long stroke. An adjustment in the opposite direction will
cause the piston to make a shorter and much lighter stroke. When using the
pencil for stippling, it is held so that the oscillations of the pencil-carrying 1od are
vertically disposed.
When it s desned to make strokes with the pencil, it is held on its side, as shown
in Fig. 3, the length of the strokes being adjusted by screw L
I am aware that many minor changes in the construction, arrangement, and
combination of the several parts of my device cau be made and substituted for
those herein shown and described without in the least departing from the nature
and principle of my invention.
Having now particularly described and ascertained the nature of my said inven-
tion, aud in what manner the same is to be performed, I declare that what I
claim is :
1. The combination with a motor, and its fly-wheel which is formed with a
dovetail or T-groove running transversely its face, of a block seated in said groove,
a piston rod pivotally mounted on the black, and means for locking the block in an
adjusted position; substantially as described.
2. The combination with a pencil which is adapted for stippling and stroke work,
of a piston for actuating said pencil, and means for reciprocating the piston ;
substantially as described.
3. The combination with a pencil which is adapted for stippling and stroke work,
of a piston for actuating said pencil, and means for forcing and withdrawing air
from behind the piston for reciprocating the same; substantially as described.
4. The combination with a pencil which is adapted for stippling and stroke work,
means for adjusting the stroke of the piston, and a motor for forcing and
withdrawing air from behind the piston to reciprocate the same; substantially as
described.
5. The combination with a pivoted pencil-cairying rod, of a piston connected
thereto and arranged at an angle to said rod, whereby when the piston reciprocates
it oscillates the rod, and means for reciprocating the piston, substantially as
(lescribed.
6. The combination with a shell, of a cylinder arranged at one end thereof, a
pencil-carrying 1od pivoted in the shell and connected to the piston, and means for
adjusting the oscillations of said rod; substantially as described.
7 The combination with a shell, which is formed with thickened side walls at
one end, an oscillatory pencil-carrying rod mounted in the shell and protruding
between said thickened walls, and means for oscillating said rod; substantially. as
described,
8 The combination with the pencil-carrying rod, of a piston for oscillating said
rod, and means for creating an Air pressure and suction in alternation for
reciprocating the piston and oscillating the pencil-canying rod; substantially as
described.
Dated the 7th day of May 1895.
'
PHILIP M. JUSTICE,
Chartered Patent Agent, London, for the Applicant.