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Патент USA US2110279

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March 8, 1938.
F, E. sLoAN _
2,110,279
PAPER ì HOLDER
Filed Aug. 25, 193'?
.ïnîmmww
2,110,279
Patented' Mar. 8,
'_ÍUNiTEDfs-TATES. PATE-NT OFFICE
Appiïîïî 31:30 z_îoîgvïlïiîloîoîîasu
3 Claims.: (Cl. 258-24)
This invention relates to a paper holder for
use primarily in making photographic enlarge
ments.
_In making enlargements from relatively large
5 negatives, the enlarging light and the part of
the negative whichit is desired to block out can
fairly readily be masked from the positive, but
in enlarging from the negative of the smaller
cameras that are now so popular, it is very diili
10 cult to hold the small negative in place and still
get the positive printed in the exact place on
the paper that `may be desired and to protect the
rest of the paper from the light.
For enlargements from such small negatives,
15 it is desirable to locate the positive in a particu
lar position on the paper and frequently a> wide
` margin or border is desired.
With devices now
in use certain fixed borders may be obtained, ybut
with the device of this invention, very large, and
very narrow borders may be obtained as well
as borders of any intermediate width. After once
setting the device to obtain the desired border,
successive prints may be made in the dark room
without disturbing the border arrangement and
25 with the positive assurance thateacli picture will
have the identical position on the paper that is
desired. The sensitive emulsion on photographic
paper used for enlarging is on the upper side,
Aand consequently the paper curls upwardly at
the edges. In this invention stops are provided
which bear up against the mask, under which the
paper is inserted, so the upper curling edge will
always be engaged by these stops. These stops
may be moved to several diiïerent positions to
give different border Widths. The stops are placed
a ñxed distance apart and for borders of widths
between the stops, adjustments of the mask in
the two positions at right angles to each other
are provided.
Other objects and advantages of the invention
-40
will appear from the following description and
accompanying drawing in which similar numer
als refer to similar parts in the views.
’
Figure l-is a plan view of a holder embodying
45 the invention.
Figure 2 is a partial sectional view of the holder
on line 2-2 of Figure 1.
The base I has therein holes 2, the two sepa
rate groups of which are in lines, in one group
50 parallel to the back of the base and in the other
to the sides of the base. The lines of holes are
a fixed distance apart. Pins 3, having in their
centers springs 4, which urge the pins upwardly,
> may be placed in any two holes in a line parallel
55 to the back of the base and two more in holes
in a line parallel to the side, and when a piece
of printing paper 5 is placed against these four
pins, it will be'square in respect to the sides of
the base.
A mask S having edges ‘i and 8 at right angles Ul
to each other and parallel to the lines of the pin
holes is placed on the paper 5, both to hold the
paper down on the base, and to cover the edge
of the paper to prevent the light from striking
it, in order 'to form amargln on the picture
being printed. This mask is hinged at 9 and I@
to a plate it, on the lower side of which are two
racks i2. An elongated pinion i 3, in brackets
M, having thumbheads i5 thereon engage the
two racks, and bymhich they may be moved back
and forth. The base is cut out as at i6 to give
room for the movement of the racks and hinges
and yet allow the mask to lie fiat on the base.
The cut out pomions it, at il have` edges form
ing stops to
‘the ‘forward movement of the 2@
hinges, and therefore of the mask. 'I'he mask
has thereon a hold member it? projecting from
its side, by' ‘leans
which it may be moved
sidewlse, the racks keeping their position with
respect
the haelt oi? the base, but the elon 25
gated pinion allowing them to slide thereover.
‘The openings l@ are large enough to allow this
movement,
their sides form proper stops to
limit the sidewiœ movement-oi the mask. Grad
uations Il@ are on edges Tl and 8 of the mask.
The pins 3 are urged upwardly against the
under side of the mask so that, though the paper
5 curls upwardly, the pins form positive stops
for it.
After locating the paper on the base, and set 35
ting the masi: d for ‘two sides of the paper, the
masks 2t and 2i are moved to the desired posi
tions as determined by the graduations i9 to
mask the other two edges of the paper. 'I'he
base l has brackets 22 thereon in which is pivot
ally mounted the square rod frame 23. This
frame has on its rear and left side depending
members 2i, the inner edges 25 of which project
downwardly and securely hold mask 6 down dur
ing a printing operation. Also on the rear and
left side of the frame are resiliently held car
riages 26 to which 'the masks 2B and 2| are at
tached.
These carriages 26 have knobs 2l by
which they are movable along the rods of frame
23.
Arc 28, striking bar 29, limits’the' upward 50
and backward swing of the frame 23.
_
When it is desired to make a print, the exact
location for the picture on the paper may be
determined by placing a. pair of L squares on the
paper and moving them around until this exact 55
:1,110,979A .
location is found. 'I'hen the paper is placed' on
thebase I and pinslareputinthelocations
nearest _to the desired margins, and the paper
placed against the pins. The mask I is then
lowered. and moved .back or forth and sidewise,
until the exact desired picture location and mar
gin are obtained. Then masks 2l and 2| are
moved to complete the margins on the other two .
edges. With this setting, any number of prints
may be made by simply raising the masks and
removing and inserting successive sheets„without disturbing the location of the masks, and
these operations may be carried on in the dark
room, without additional light.
'
While the invention has been described as a
paper» holder for use in making photographic
enlargements, it may be used for holding Pßper
for other purposes.
Having thus.described the invention, what is
claimed as new and is desired to be secured by
Letters Patent is:'
1. In a holder for paper, the combination with
~ a base, pinions along one edge thereof, rack bars
engaging said pinions and a mask hinged to said
25 rack bars, means projecting from _said base
against which to position paper thereon and
under said mask, said mask being movable by
said racks and pinions in a straight line over
said base to vary the margin of the paper there
under.
l
2. In a holder for paper, the combination with
a base, elongated pinions along one edge thereof,
rack bars engaging said pinions and a mask 6
hinged to said rack bars, means projecting from
said base against which to position paper there
on and under said mask, said mask being mov
able by said racks and pinions in a straight line,
and said racks being‘slidable along said pinions
4in a direction at right angles to said straight line,
to vary the margin of the paper thereunder.
V 3. In a holder for paper. the combination with
a base, elongated pinions along one edge thereof,
rack bars engaging said pinions and a mask
hinged to said rack bars, said,base having there
in a plurality oi' openings, resiliently projecting
pins> in a selected group of said openings contact
ing the under side of said mask and serving as
guides against which to position paper upon said 20l
base and under said mask, said mask being mov
able by said racks and pinions in a straight line, y
and said racks being slidable along said pinions
in a direction at right angles to said straight
line, to vary the margin of the paper thereunderl
for any amount not allowed by the possible posi
tioning of said pins.
FRANCIS EUGENE SLOAN.
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