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Патент USA US2137601

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‘ Nov; 22, 1938.
2,137,601 .
Filed July 2, .1955
Patented Na. 22, 1938
. 2,137,60l.
. Arthur J. Abrams, New York, N. Y.
Application July 2, 1936, Serial No. 88,564
‘_1 Claim. (CI. 88-17)
Fig. 1 is a front edge view of a ?lm magazine
This invention relates to improvements in ?lm
magazines adapted for use in’ motion picture
as at present contemplated. ,.
Heretofore, magazines of this type were pro
zine cover removed.
for winding or unwinding the film within the
be driven by the camera mechanism as the ?lm
Fig. 4 is a plan view of a ?lm reellernploy'ed I
in saidmagazine.
The film magazine comprises a casing 5 formed
with a back wall 6, top and bottom walls ‘I, a front 10
wall 8_ and a rear wall 8. The cover it thereof
is advanced past the exposure aperture of the
magazine. In addition to the above means, a
claw ‘or sprocket or the like is employed ifor
also forms the front wall and is provided with‘
> -
a peripheral ?ange II for tight engagement
The above type of magazine is necessarily
_ quite complicated and relatively expensive, and
considerable skill is needed for introducing such
with the front edges of the walls ‘I, 8 and '9.
in the present instance. the front wall a is
provided with an exposure aperture i2 and with
an elongated opening l3 so ?lm advancing
a magazine into a camera.
The present invention therefore, seeks to pro
vide an improved form‘of magazine, which is not
only of simple and very inexpensive construc
vrz'ieans, such as a claw or the like, may engage
the sprocket hoies h of the ?lm F in the maga
aine. If desired, another hole Ito may be pro 20
vided to be employed for setting a sprocket hole
72 in proper relation to the film advancing means
and thus making certain that said means would
20 tion. but is also readily introduced into’ a cam
era even by unskilled persons.
of magazine.
magazine,'and these means were arranged to '
‘Fig. 3 is a similar view of a modi?ed form 5
vided with means in the form of reels or spools
advancing the film.
Fig. 2 is a side view thereof with the maga
Hence it is an
object of the invention to providea ?lm maga
zine in which all spools and reels are emitted
and in which a roll of ?lm, provided with an
N) CH initial "set" or curl, is placed in one ?lm com-l
surely engage the sprocket holes exposed by the
opening l8.
exposure aperture to a position in another film
The mentioned curl oi the dim
suitable material. ‘This insert shown at E4, is
larger diameter and without the aid of any take~
somewhat larger similar opening It. This open
ing forms film compartments, the compartment
The magazine is provided with an insert (Fig.
2i which may be of wood, Bakelite, or other
partment' to be intermittently moved past the
provided at its upper end with a substantially ~
causessaid ?lm to reform into a roli commen
30 surate with its initial 'torm, but of somewhat ' circular opening it and at its lower end with a
up mechanism.
A further object is the provision of a ?lm
magazine adapted for the housing of a film roll
without the aid or spools'or reels, and one which
requires no take-up mechanism-one which re
quires no coupling or connection of any kind
with any moving part of the camera other than
the association of the clawor equivalent ?lm
advancing means, with the sprocket holes of the
The invention also seeks to provide simple
means for applying a drag to the ?lm as it is
i5 serving to accommodate a ?lm roll R and the
compartment I5 serving similarly for the ex
posed ?lm which forms the roll R1.
‘Between the two compartments, the insert it
is provided with a central portion terminating
in a wall El adjacent to the magazine wall 8
and spaced therefrom a distance somewhat
greater than the ?lm thickness. The upper and 40
lower portions oi the insert are arranged with
Walt portions l8 designed to abut the wall 8 and
to therefore insure the mentioned spacing be
being moved from one compartment to the other 7
tween. the walls 8 and II.
In. the above‘ manner,‘ the ?lm may freely pass 45
to obviate promiscous unwinding of the ?lm roll.
Another contemplated feature of the invention
resides in the novel gmanner of attaining the
from the compartment ii to the compartment
I6, yet being maintained in a flat ‘condition espe
cially when passing by the exposure aperture l2.
However, the speed at which the ?lm is ad
With the above and other numerous features, vanced, although intermittent, ‘may cause pro
objects and advantages in mind, the invention . miscous unwinding of the ?lm roll R. and thus
resides in the embodiment thereof as‘ illustrated destroy the registration position of the sprocket
in the accompanying drawing and as described holes h exposed by the opening M. It is, there
in the following speci?cation.
' ~.tore, desired to retard the movement of the ?lm
'pre-set ?lm roll.
In the drawlnl:
excqt when politivei'y moved by the film ad
vancing means to prevent overrunning of the
film. A simple manner of accomplishing this
is to apply a drag on the film as by forming a
kink or bend’therein such as shown at I! as the
film passes through the throat 20 of the com
partment i5. Said throat is formed by an upper
lip 2i set inwardly in relation to a lower lip 22
on the insert it. This form of throat also serves
to wipe the ?lm clean of dust or other foreign
10 matter which may be on said film.
The throat ‘23 of the compartment (6. is ar
ranged so the film may freely pass into said
compartu out after passing the opening i8.
It will be noted that, as the ?lm enters the
compartment til, it immediately starts to re
curl and it is essential that it do
the film may form divers serpel' re loops which
would fill the compartment ant
" 1.4' resistance
to oncoming film therelnto.
roll it is given an initial “e”
tially the following ma
The ?lm is ’“
son, the
suhstantially as
J. or the like is
Wound condi
tion. The roll is then subjected to a tempera~
ture in excess of any temperatiu'e it may en.
counter in ordinary usage. This will cause the
emulsion, which is on one surface of the ?lm, to
soften and reset itself on, the ?lm so that said
39 ?lm is given an inherent tendency to curl under
normal handling and storing temperatures. The
roll is then rewound, with its outer couvolutions
innermost so that the exaggerated curvature of
the innermost convolutions (now outermost)
seek to maintain the roll in a close wound condi~
tion at all times thereafter.
Now, when a roll is placed in th, compartment
it of a magazine and its outer convolutions are
strung past the magazine apertures to pass into
the compartment 68, this end of the ?lm will
immediately seel: a, curled condition as shown.
film magazine is shown in
Figure 3 wherein, instead of the ?xed insert it,
a freely hung plate 2! is designed to lightly press
against the film F. This plate is provided with
an angulated portion 28 at each end which rides
on an angled portion 21 formed on a bracket 28.
It can be seen that the plate 25 is dragged down
wardly by its light frictional engagement with
the ?lm and because of the angular engagement
at 28 and 2!, said plate is forced outwardly to
wards the front wall 8 of the magazine.
If desired, as shown, the plate 25 may be ‘
formed with reentrantly bent portions 29 to form
compartments l5“ and I6“ commensurate re~
spectively to compartments l5 and I6 previously
From the foregoing it can be seen that a film
magazine, in its preferred forms, has been pro~
vided and that a film roll peculiarly adapted for
use in such a magazine has also been provided.
While this disclosure is at present preferred, it
is obvious that skilled persons may employ the -
principles here set forthin various ways. Hence
interpretation oi’ the invention as claimed should
rather be based on the prior art than on the
instant disclosure.
I claim:
A ?lm magazine having in combination a cas—
lag having an apertured wall, a bracket ?xed
wit n the casing, said bracket having extending
arms substantially parallel with the apertured
wall of the casing, the end of one of said arms 30
being angled in a direction away from said aper
tured wall, the end of the other of said arms be~
ing angled in a direction toward said apertured
wall, a member freely hung over said bracket and
arms, said member having angled portions corre 35
sponding to the angled portions of the arms,
passage space for a film strip between the aper
tureo. wall and said member, said member and
said arm ends cooperating to urge the film strip
into light frictional contact with the apertured
well during movement of said film in one 40
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