Improvements in and connected with Photographic Vignetting Apparatus.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Improvements in and connected with Photographic Vignetting
Apparatus.
I, CHARLES STEWART SOUTHIN, Percy House, Ordnance Road, Enfield Lock, in
the County of Middlesex, Draughtsman and Photographer, do hereby declare
the nature of this invention to be as follows:-
This invention consists of two thin plates of suitable material about, the size
of an ordinary printing frame with rectangular openings a little smaller than the
size of the negative. One of these plates are placed on the top of an ordinary
printing frame and is adjustable in one direction by having an end portion of
the plate bent to form a clasp, and a bent arm fixed to the other end of the plate
with a set screw fitted to it. Screwed studs are livetted to the bottom plate,
and the top plate falls on to these studs, the top plate being slotted to move
freely in one direction on the studs, this direction being in a transveise direction
to the movement of the bottom plate. Before the top plate is placed in position,
short spiral springs are dropped on to the screwed studs, the top plate is then
placed on and can be adjusted to any height or angle required by means of
milled headed nuts fitted on the screwed studs above the top plate
The top
plate cares the vignetting card by bending portions of the plate to form
grooves for the insertion of the card The top plate may be securely held at any
height by using a locking nut in place of one of the spiral springs
A cover lid
resting on the bottom plate may be used if desired such cover having a rectangulat
opening of a similar size to the opening in the plates, its use being to exclude
all light but that which passes through the vignetting card.
Dated this 11th day of February 1899
CHARLES STEWART SOUTHIN.
COMPLETE SPECIFICATION.
Improvements in and connected with Photographic Vignetting
Apparatus,
I, CHARLES STEWART SOUTHIN, of Percy House, Ordnance Road, Enfield Lock,
in the County of Middlesex, Draughtsman and Photographer, 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:
-
My object in this invention is to simplify the production of photographic
vignettes. In order to do this I provide a means whereby an ordinary cut out

page_text: card or portion of this card can be held over the negative and adjusted to any
part of the negative or any height from the negative, at the same time all the
adjustments being most easily made and instantly thoroughly secured.
This invention consists of two thin plates or frames A, & B, of suitable material
about the size of an ordinary printing frame with rectangular openings a little
smaller than the size of the negative. The bottom plate A, rests on the top of
the printing frame, and has a clasp C, at one end.of it, and a bent arm D, with
a milled headed fixing screw E, at the other end. A slot F', and screw G, may
be used instead of the clasp C. This bottom plate is moved horizontally across
the printing frame and can be instantly secured to it by the fixing screw E.
Screwed studs H, are rivetted to this bottom plate and the top plate B, falls on
to these studs, the top plate being slotted to allow it to move freely in one
duection on the studs, this direction being in a transverse direction to the move-
ment of the bottom plate. A spring, or springs, flat or spiral, are fitted
between the top and bottom plates or frames Milled headed nuts L, are fitted.
on the screwed studs above the top frame these springs and nuts are for the
purpose of raising or lowering the top frame to any suitable height. A locking
nut M, is fitted to one of the screwed studs between the frames A, B, this locking
nut and the milled headed nut above it instantly securing both the upright and
lateral movement of the top frame. The top frame holds the vignetting card.
This frame can be made of any suitable material. When made of a Hexible
material portions of the plate ate bent or moulded to form grooves N, for the
insertion of the card.
When made of wood the cards run in grooves N, in the frame and are held
securely by the bevels O, on the inside of the frame which bend up the end
portions of the cards.
The cover lid P, is employed to cut off all light but that which passes through
the opening in the vignetting card.-A light diffuser or filter, is attached to the
top frame consisting of a sheet or sheets of transparent or coloured flexible
material larger than the vignetting card, with a number of eyelet holes, loops,
studs or catches in it for the purpose of readily attaching it to or detaching it
from the top fiame which is fitted with studs, holes, or catches for this purpose.
It can also be attached to any ordinary printing frame in a similar manner and
for a simalar purpose.
Fig. 1 is a side elevation with metal top frame shewing the apparatus attached
to printing frame.
Fig. 2 is a plan of Fig 1.
Fig. 3 is a longitudinal section of Fig. 4 on XY, with apparatus attached to
printing frame shewing top frame in wood, and cover in section.
Fig. 4 is a plan of apparatus as shewn in Fig. 3, with cover removed.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is;
1. In a vignetting apparatus a lower plate or frame about the size of a printing
frame with an opening about the size of the negative and having a portion of
one end bent to form a clasp, or this end slotted to receive a screw or stud, and a
bent arm on the opposite end with a set screw through it as a means of adjust-
ment and having screwed upright studs fixed to it.
2. In a vignetting apparatus a top plate or frame about the size of a printing
frame with an opening about the size of the negative, having portions of the
plate bent to form a groove for the insertion of the vignetting cards or having
grooves for the cards to run in and bevels on the inside of the frame which hold
the cards by bending the ends of them when in position, and having slots in
it, in which the said screwed upright studs work, for lateral adjustment.
3. In a vignetting apparatus a means of adjustment by a spring or springs
fitted between the aforesaid top and bottom plates and milled nuts fitted on the

page_text: aforesaid upright screwed studs above the top plate, whereby the said top plate
can be raised or lowered farther or nearer from the negative.
4 In a vignetting apparatus a thin nut fitted on one of the aforesaid screwed
upright studs between the aforesaid top and bottom plates which together with
one of the aforesaid milled nuts forms a locking arrangement for the top plate.
In a vignetting apparatus a cover having an opening in it about the size
of the negative, and which may be readily slipped on and off, being for the
purpose of cutting off all light from the negative, but that which passes through
the opening in the vignetting card.
6. In a vignetting apparatus a light diffuser or filter of transparent or coloured
flexible material, having eyelet holes, loops, studs, or catches in it for the purpose
of fixing it to the apparatus, or any vignetting apparatus or printing fiame,
which is fitted with studs, holes, loops or catches for this purpose.
7. The improved vignetting apparatus constructed substantially as hereinbefore
described and represented in the accompanying drawings.
ALL 3г.
1000
CHARLES S. SOUTHIN.