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Патент USA US2410131

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Oct. 29, 1946.
2,410,131
R. SARDESON a?- AL
FILM HOLDING DEVICE
Filed July 22, 1942
2, Sheets-Sheet
I
Inventors
ROBERT SARBESO"
ED
Bf 4%
Patented Oct. 29,“ 1946
2,410,131
UNITED STATES PATENT OFFICE
2,410,131
FILM HOLDING DEVICE
Robert Sardeson and Edward H. Savela, Minne
apolis, Minn., assignors to Pako Corporation,
Minneapolis, Minn., a corporation of Delaware
Application July 22, 1942, Serial N0. 451,940
6 Claims.
(Cl. 95-100)
1
2
This invention relates to a device for holding
photographic ?lms. It is customary to hold these
?lms in substantially vertical position while they
said portion but cannot be moved past said
shoulder over said pointed member.
It is also an object of the invention to provide
are being processed.
a ?lm holding device comprising a pair of re
It is desirable to have~a
?lm holder on which the ?lms can be very eas- ‘
ily and quickly placed, and one which will se
curely hold the ?lm. It is also desirable to have
some tension in a vertical direction on the ?lm
siliently opposed plate-like members, one of
which has projecting therefrom and toward the
other member a ?lm holding means such as set
forth in the above paragraph the other of said
members having an apertured portion into which
to hold it properly in position and to have some
provision whereby the ?lm, if of considerable 10 said pointed portion is receivable, said apertured
width, can expand laterally. It is of great im
portion having in the rear thereof a plate adapted
portance that the ?lm holder have a minimum of
to be engaged by the ?nger of the operator Where
contact surface for the ?lm. This means that
‘by said members may be moved toward each
there will be less ?uid adhering to the holder
other to force a ?lm onto said pointed member.
and ?lm when it is transferred from one liquid 15
These and other objects and advantages of the
to another and it also means that there is less
invention will be fully set forth in the following
moisture carried to be evaporated so that the
description made in connection with the accom
drying operation is more rapid.
panying drawings in which like reference char
It is an object of this invention to provide a
acters refer to similar parts throughout the sev
simple and e?icient ?lm holding device having a 20 eral views and in which:
?lm holding means on which the ?lm can be very
Fig. 1 is a view in front elevation of a ?lm ho1d—
easily and quickly placed and on which it is
very securely held.
It is another object of the invention to pro
ing device;
vide a ?lm holding device comprising a top mem
ber having ?lm holding means, and a bottom
tion indicating that the ?lm 22 is in an expanded
Fig. 2 is a partial view similar to Fig. 1 shown
on an enlarged scale, with arms I‘! in a posi
condition;
member capable of vertical movement having
?lm holding means, said film holding means be
Fig. 3 is a vertical section taken on line 3--3
of Fig. 5 as indicated by the arrow;
ing swingable about horizontal axes whereby a
Fig. 4 is a vertical section taken on line 4—4
?lm held in said device will be tensioned vertically 30 of Fig. 3 as indicated by the arrows turned through
by said bottom member and can expand laterally
due to the swinging movement of said ?lm hold
ing means and be tensioned laterally by said bot
tom member.
90 degrees;
Fig. 5 is a horizontal section taken on line 5—5
of Fig. 2 as indicated by the arrows;
Fig. 6 is a horizontal section taken on line 6-6
It is a further object of the invention to pro 35 of Fig. 2 as indicated by the arrows;
vide a ?lm holding device having a bar at its
Fig. 7 is a view in front elevation of a modi?ed
top by means of which it can be suspended on
form of holding device;
horizontal supports, the same also having verti
Fig. 8 is a ‘vertical section taken on line 8--8
cal parallel guide members, a ?xed top member
of Fig. 7 as indicated by the arrows;
extending between said guide members and pro 40 Fig. 9 is a vertical section taken on line 9-9
vided with a plurality of pairs of ?lm holding
of Fig. 7 as indicated by the arrows;
means, a bottom member extending between and
Fig. 10 is a view in front elevation of another
movable on said guide members also having
modi?ed holding device; ‘
thereon a plurality of pairs of ?lm holding means
Fig. 11 is a vertical section taken on line I I-—-I l
vertically aligned respectively with the said pairs 45 of Fig. 10 as indicated by the arrows; and
on said top member.
,
Fig. 12 is a vertical section taken on line l2—l2
It is more speci?cally an object of the inven
of Fig. 10 as indicated by the arrows.
tion to provide a means for holding a ?lm com
Referring to the drawings, particularly Figs.
prising a pointed member in the shape of a
1 to 6,‘ a ?lm holding device is shown comprising
triangle in central longitudinal section, the same 50 a frame I5. While this frame might be variously
having a portion of reduced diameter, the sides
constructed, in the embodiment of the invention
of which make substantially a right angle with
illustrated it is shown as made from a cylindrical
the bottom of said triangle, said bottom forming
rod bent into ‘substantial U-shape forming a bot
a shoulder whereby a ?lm can be pushed over
tom horizontal portionv [5a and vertical spaced
said pointed member into position surrounding 55 parallel portions 15b. Portions l5b diverge at
2,410,131
3
4
their upper ends and are bent to form horizon
quite freely on said guide members so that it can
tally extending terminal portions |5c adapted to
move downward some distance more at one side
rest upon spaced horizontal supports. A top
member I6 is provided formed of a ?at strip, the
than the other. This will thus tension the ?lm
even though the pointed members 2| are not the
same distance from the edge thereof. When the
?lm is placed on arms I‘! they will be swung to
same being bent around the members l5?) and
secured thereto in any suitable manner as by
spot welding. Member I6 also has a horizontal
?ange |6a extending forwardly therefrom and
extending almost all the distance between the
incline inwardly away from members or por
tions |5b as shown in Fig. 1. A ?lm of con
siderable width when wet, expands laterally ap
ends thereof. Arms I‘! are provided and these are 10 preciably. This laterally expanding movement
can be accommodated by arms I‘! swinging about
pivoted to member l6 adjacent its ends, said
their pivots toward side portions iiib. The ?lm
arms being supported on studs or pivots |B se
is also tensioned laterally appreciably by the
cured in member IS in any suitable manner as by
horizontal component of the force exerted on the
riveting. Pivots l8 are provided with peripheral
grooves forming a reduced portion therein and 15 ?lm by the weight of the lower member 20.
In Figs. '7 to 9 another form of holding device is
arms H are provided with open ended slots Ila
shown. This comprises a frame formed of a bar
extending at an angle thereinto so as to be en
25 and while this may be made of various ma
gaged over said reduced portions. Arms II are
terials and various shapes, in the embodiment of
of increased width at their ends adjacent flange
the invention illustrated, it is shown as a wooden
Ilia and are provided with end surfaces |'|b ex
bar substantially square in transverse cross sec
tending at an obtuse angle to each other and
tion. Member 25 has secured thereto cam plates
adapted to engage the bottom of ?ange IGa. to
26 of substantially triangular shape having
limit the swinging movement of arms |'|. Sur
rounded corners which function when the device
faces l‘lb are connected by a surface concentric
is moved through a processing machine such as
with the surface of pivot IS. A bottom member
20 is provided similar to member I6, the same
having its ends bent around vertical portions 150
and constructed and arranged to be slidable
shown in the prior patent of Glen M. Dye No.
on it is only necessary to press the same against
are identical with portions 2 | , 2 l a and 2|b already
described. Portions 3ilc are also provided with
1,863,689. A member 21 formed of a cylindrical
rod is provided and bent into substantial U-shape,
the same thus- having a bottom portion 21a
thereon. Member 20 also has a forwardly pro
jecting horizontal flange 20a. Arms l? are also 30 which inclines downwardly slightly toward the
center and vertical side portions 21b which are
pivoted to member 2|) adjacent its ends, which
threaded at their upper terminal ends and pass
arms are identical with arms I‘! already described.
through bar 25. Portions 2112 are equipped with
Each of the arms I1 is provided with a ?lm hold
nuts 28 and washers 29 at each side of bar 25 and
ing means and this comprises a pointed mere
are thus held securely therein. A top member
her 2| having the shape of a triangle in longi
36 is provided extending between portions 211),
tudinal central section and preferably of conical
the same having its ends bent around said por
shape. Member 2| has in the rear thereof, and
tions and secured thereto in any suitable manner
is carried by, a reduced portion 2 lot of member i.
as by spot welding. Member 30 is shown as of
The sides of portion 2|a make substantially a
plate-like form, the same having a strengthening
right angle with the bottom of the cone or tri
rib 30a formed therein and having spaced de
angle above referred to so that said bottom
pending flat portions 302) disposed in vertical
forms a ?at shoulder. Portion 2 Ia is carried by a
planes. The central portion 39b is shown as of
portion 2|?) of much greater transverse dimen
less width than the side portions 3% and mem
sion having a ?at surface substantially parallel
with the bottom of member 2|.
45 ber 33 also has adjacent its ends the flat portions
300 extending downwardly the same distance as
In operation frame IE will, as stated, be sup
portions 30b. The portions 3% are provided ad—
ported upon a rack having horizontally extending
jacent their lower corners with ?lm holding
supporting members engaged by portions |5c. A
means comprising a pointed member 3|, a re
?lm shown as 22 will be supported upon the ?lm
duced portion 3la and a larger portion 3 lb which
holding means and in order to place a ?lm there
pointed members 2|. When the ?lm is pressed
against member 2| said member punctures the
?lm and passes therethrough, the ?lm passing
onto and surrounding portion 2|a. The ?lm is j
film holding means comprising portions 3|, 3|a
and SH). A bottom member 33 is provided similar
in form to member 30, but in inverted position
relative thereto. Said portion 33 has its ends
now firmly and securely held on portion 2 la and
bent around vertical portions 211) and these end
it cannot be removed therefrom past the
portions are constructed and arranged to slide
shoulder or bottom of member 2| without further
freely on portions 2727.
Member 33 has a
rupture. In practice when it is desired to remove
strengthening rib 33a and has the upwardly ex
the film it is given a slight jerk tearing the hole
tending spaced portions 33?) which are disposed
therein out through the edge. If it be attempted
in vertical planes and are vertically aligned re
to remove the ?lm the edge thereof about the
spectively with portions 301). Member 33 also has
puncture ?attens or“ moves approximately into
the portions 33c similar to and vertically aligned
one plane exerting a gripping action upon the re
with portions 300. Member 30 between each por
duced portion 2|a. This increases the dif?culty
tion 300 and the adjacent portion 30b and be
of removing the ?lm past the shoulder and over
the pointed portion. The ?lm is rather soft when
tween portions 302) is provided with a depending
wet and is quite slippery. The flat shoulder on
flange 30d projecting at an angle of substantially
the pointed portion is important in preventing
45 degrees, the same being shown as projecting
the ?lm from moving off of the pointed member 70 forwardly. Similar ?anges 3311 are formed on
in the processing operations. With the ?lm sup
member 33 and these are shown projecting up
ported as shown, it will be tensioned vertically by
wardly substantially at an angle of 45 degrees,
member 20 which can slide down on portions I519.
the same being vertically aligned with flanges
The side portions |5b form guide members for the
30d. Portions 33b and 330 are also provided with
lower member 20. The bottom member slides 75 the film holding means 3| having the portions
2,471 0,131
5
6
did and 3 lb and these are vertically aligned with
tions Ma. The pointed portions 4|. enter poi’
the corresponding ?lm holding means on ‘top
, tions We through the apertures 40]‘. .The' operator
can’ thus-have his’ ?nger or thumbover portion
member3ll.‘
‘i
>
~»
I
~-
-
-
r
Y The‘ holder‘ just described has four-pairs of
vertically aligned ?lm holding means and‘each'
pair can be used to hold a narrow ?lm 35" as ‘shown
4022b without‘ any danger of being pricked by the
sharp end of portion 4|. Portion 4lleicould be of
suf?cient depth to protect. the ?nger or thumb
of the operator fromipointed member 4|. Por
tion '40i forms'a stop for the edge of the ?lm
in Fig. 7. The‘ ?lms will be tensioned' vertically»
by the weight of memberl33 which as stated, can
and prevents the same from being inserted .too
slide freely on guide‘members 27b. .The bottom
of member 33 slopes toward a central'point and 10' far upwardly in the holder. Member 40 ‘can be
supported on a rod or other member extending
Water or other liquid will readily'run down to the
through ‘the .bight at ‘the top thereof. Member
central point and drip off. This gives ‘better
4|! can also be supported by a rod passing under
drainage‘. than if the bottom were" horizontal.
the bentlends of lugs 407‘ and 40g and through
The?anges 30d tend to direct any water-which
slot 40k. Lug 40a‘v will be sprung somewhat and
might’be thereon away from the surface of the
?lms35 so that thesame would drip freely away
from the?lm. The flanges 33d give a stabilizing
action or effect when the carrier ismoved down
wardly in a liquid to'submerge the ?lms. The
member 40 willbe ?rmly held in position.’
I
From the above description it will be seen that
we have provided a very simple and e?icient ?lm
holdingmeans and one on which the ?lm can
?anges 38d also protect the ?lm from anything 20 be very quickly and easily placed and‘ on which
it will be" very securely held. It is impossible to
dropping from above. ‘Both the flanges 30d and
remove the ?lm from reduced portions 2|a, 3|a
33d support the carrier when it is laid ?at on a
and 4| a without further rupturing the same, .The
surface so that the pointed members 3| or the
?lm is ?rmly held even though the gelatinous
?lms do not come in contact with the surface. It
will be noted that it is possibleto use the same 25 surface is wet and slippery. When the ?lm is
type of member for bottom member 33 as fortop
member 30. The flanges 36d and 33d have dis
wet and the pins 2|, 3| and 4| are wet thev?lm
might slip off ‘the. pins but for the shoulders
tinct functions on both members.
formed by reduced portions 2|a, 3|a and 4|a.
,_
'
In Figs. 10 to 12 another form of. ?lm "holding
device is shown. This is formed of a plate/40
bent substantially at its center substantially 180
It is pointed out that there is an extremely small
?lm contacting surface on portions 2|a, 3|a and
Ma which are the parts contacted by the ?lm.
degrees, thus forming opposed portions 40a and
This means that less water or ‘moisture will be
retained on the holder or the adjacent part of
401). A slot 400 is formed in the plate and ex
the ?lm and that there is less moisture to evap
tends quite a distance in portion 40b. Portion
40a is of increased width at its lower end hav 35 orate so that the drying operation will be facili
ing projecting portions 40d shown as having
tated and speeded up. The ?lm holders embody
ing the invention are quite simple in construc
rounded ends and each is provided on its side
tion, are easily made and are highly e?icient in
adjacent member 4017 with a ?lm holding means
use. The ?lms are properly supported under the
4| having a reduced portion Ma and a portion
of greater transverse dimension 4|b. This hold 40 desired tension and provision is made for lateral
or horizontal expansion. With narrow ?lms such
ing means is similar in all respects to ?lm holding
as shown in Fig. 7, the lateral expansion is not
means 2| having the portions 2|a and 2|b al
ready described. Portio'n 402) has pressed upward
ly therefrom portions 40c illustrated as of sub
stantially cylindrical form, the same each having
an aperture 40]‘ at its center through which por
tions 4| are adapted to pass when portions 40a
and 40b are pressed toward each other. The
su?icient to require any particular provision
therefor. All of the devices illustrated have been
amply demonstrated in actual practice, found to
be very successful and e?icient and are being
commercially made.
It will of course be understood that various
changes may be made in the form, details, ar
bers 40a and 4% can be pressed together and 50 rangement and proportions of the parts without
departing from the scope of applicants’ inven
they will assume their normal spaced relation
tion, which generally stated, consists in a device
ship when released. The lower end 40)‘ of por
capable of carrying out the objects above set
tion 40b has parts 4019b reversely bent upwardly
to lie parallel to the main part of portion 40b
forth, in the parts and combinations of parts dis
and to overlie the open end of bosses or projec 55 closed and de?ned in the appended claims,
What is claimed is:
tions 40c. Portion 40a is provided with a struck
1. A ?lm holding device having in combination,
up lug 40g having its end extending parallel to
a frame comprising spaced parallel vertical
the outer side of portion 40a and the lower end
guides, a top member extending ‘between and
of portion 40a is bent outwardly to form a ?ange
40h parallel with a slot 40k extending parallel to 60 secured thereto, arms pivoted to said member
adjacent said guides swingable about horizontal
the surface of side portion 40a. Portion 4%!) has
axes, a bottom member extending between and
a narrow lug 4G1‘ bent at right angles thereto and
vertically slidable on said guides, arms pivoted
the same extends along the side of portion 40a.
to said bottom member adjacent said guides and
It will be seen that the portion 40a also has struck
65 freely swingable about horizontal axes, ?lm hold
up therefrom a small lug 407'.
ing means carried by said arms adjacent the free
In operation when it is desired to hold a ?lm
ends thereof whereby a ?lm can be supported on
on member 4|! the ?lm will be placed with its
said means extending therebetween and is held
top portion between member 4| and portion 40a
under vertical tension by said bottom member
and the operator can then press sides 40a and
40b together with his thumb and ?nger, the thumb 70 and can expand laterally and be laterally ten
sioned by the swinging movement of said arms.
or ?nger engaging the outer sides of portion 40a
2. A ?lm holding device having in combination,
and the part 4017b. The portions 4| will thus be
a frame comprising spaced parallel vertical
pressed through the ?lm and the top of portions
guides, a top ?lm holder extending between said
408 will press the ?lm over portions 4| so that
it will be positioned surrounding the reduced por 75 guides having at each side thereof laterally
material of member 40 is resilient so that mem
2,410,131
swingable ?lm holding means, a bottom ?lm hold
ing member extending between and slidable on
said guides having at each side laterally and free
ly swingable ?lm holding means whereby a ?lm
8
bers, said arms having pointed pins thereon
spaced from their pivots, said pins having reduced
portions forming ?at shoulders thereon, said arms
being adapted to swing to an angular position
may be supported on said means and will be 5 coincident with the attaching of a ?lm to said
pins so that the weight of the slidable second
member exerts a tensioning effect in a vertical
direction and said weightdue to the horizontal
movement of said ?lm holding means due to
component of movement of said arms also exerts
the weight of said bottom ?lm holding member.
a tensioning effect in lateral directions.
3. The structure set forth in claim 2 and means
6. A ?lm holding device having in combina
tensioned vertically by said bottom member and
can expand laterally and be tensioned laterally
by the horizontal component of the swinging
for limiting the swinging movement of said ?lm
tion, a frame comprising spaced parallel verti
cal guides, a top member extending between and
4. A ?lm holding device having in combination,
secured thereto, arms pivoted to said member
a frame comprising spaced vertical guides, a 15 adjacent said guides swingable about horizontal
top member extending between and secured there
axes, a bottom member extending between and
to, a second member of appreciable weight posi
vertically slidable on said guides, arms pivoted to
tioned below the top member and vertically slid
said bottom member adjacent said guides and
able ‘on said guides, arms swingably pivoted to
swingable about horizontal axes, ?lm holding
said members, film holding means adjacent the 20 means carried by said arms adjacent the free
holding means.
free ends of the arms, said arms being adapted
to swing to an angular position coincident with
the attaching of a ?lm to the ?lm holding means
ends thereof whereby a ?lm can be supported
on said means extending therebetween and is
held under vertical tension 'by said bottom mem
so that the weight of the slidable second mem
ber and can expand laterally by the swinging
ber exerts a tensioning effect in both vertical and 25 movement of said arms, said arms having sur
lateral directions.
faces extending at an angle to each other and
5. A ?lm holding device having in combination,
means on said members respectively engageable
a frame comprising spaced vertical guides, a top
by said surfaces for limiting the swinging move
member extending between and secured thereto,
ment of said arms.
a second member of appreciable weight positioned 30
below the top member and vertically slidable on
said guides, arms swingably pivoted to said mem
ROBERT SARDESON.
EDWARD H. SAVELA.
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