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Патент USA US2118896

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May 31, 1938.
J. PEARLMAN ET AL
2,118,896
MOTION PICTURE FILM MAGAZINE
Filed Oct. 8, 1935
.5.
I‘NVENTORS
Julius Pearlman _
Alberl Kindelmann
ATTORN EY$
2,118,896
Patented May 31, “1938
UNITED ' STATES
QPATENT‘IOFFICE
2,118,1i96
MOTION-PICTURE FILM mcszm'n
Julius Pearlman, New York, and Albert Kindel
mann, Floral Park, N. Y., assignors to Inter- '
national Projector Corporation, New York,
N. Y., a corporation of Delaware
‘
' Application October a, 1935, Serial No. 44,015
‘(Claims (CI. 88-17)
su?iciently tensioned to allow proper winding up
This invention relates-to an improved ?lm mag
azine for use with motion picture cameras, the . of the exposed ?lm on the take-up spool.
A further detailed feature of the present in
magazine being adapted to receive motion pic
ture ?lm and enable it to be fed, from one posi
5 tion within the magazine, past a point where
successive sections of the ?lm are intermittently,
momentarily stopped for exposure, to form the
desired series of pictures, and thence to another
position also within the magazine.
10
A feature of the present invention resides in
the provision of a magazine of this character in
cluding a take-up spool or the like for winding
the exposed ?lm continuously, and a take-o?
spool or the like which is by preference not sepa
vention lies in a construction of the character
above mentioned, in which a pin is provided for 5
cooperation with the resilient member to guide
the ?lm in a desired or indirect path from the
gate to the take-up spool.
Other features, objects and advantages of the
present invention will become apparent ‘in con- 10
nection with the iollowing,detailed description
of certain forms of magazines embodying and il
lustrating the invention, reference being had to
the accompanying drawing, wherein:
rately driven, the improved magazine being par
ticularly simple to construct and effective in oper
Fig. 1 is a perspective view showing the in- 15
terior of one form of a magazine constructed in
ation.
Another feature of the present invention lies
in a ?lm magazine construction which‘avoids the
accordance with the present invention:
’ need for channels or passageways extending be- .
yond a gate plate employed in order to assist in
holding the ?lm ?at at the point where exposures
are made, and which enables the ?lm to be prop
erly controlled during its passage from the gate
5 .plate to the take-up spool.
A more detailed feature of the present inven
Fig. 2 is a similar view of a modi?ed form of
the construction shown in Fig. 1;"
Fig. 3 is a front elevation of‘ a form of gate 20
plate construction employed in the magazine;
and
Fig. 4 is a vertical ‘section taken on the line
41-4 of Fig. 3 looking in the direction of the ar
rows.
-
25
Referring ?rst to the form illustrated in Fig. 1,
there is shown a suitable container ll, with the
tion resides in an improved ?lm magazine pro
vided with means including a resiliently mounted cover or top wall removed-and not illustrated.
a member or~ roller for assisting in ‘withdrawing formed of metal or other suitable material and.
from the vicinity of the gate plate, ?lm which adapted to receive a ?lm take-oi! spool II and a 30
has been exposed and which has been fed forward ?lm take-up orsupply spool II, the former being
by the action of the intermittent mechanism at a‘ journalled on a stub. shaft l3 ?xed to the bottom
rate more rapid than the rate at which ?lm is wall I!» of the container or magazine, and the lat
ter being carried for rotation with spindle it
wound on the take-up spool.
'5 Still another feature of the'present invention which may be journalled in a suitable bearing 35
resides in the provision of a yielding or resilient (not shown) ‘also carried by the bottom wall It
member which is attached to the magazine at any ‘of the magazine. The spindle it may be driven
suitable point so that the free end of the resilient
40 member bears against the ?lm passing from the
gate to the take-up spool and urges this length of
?hn against the ?lm on the take-off spool to as
sist in preventing the latter from freely unwind
ing during shipping or handling of the magazine,
45 this resilient member being so arranged that it is
released as an incident to rotation of the take-up
spool, so that undue friction is avoided. A de
tail of this construction lies in the arrangement
of the take-oil spool so that the ?lm unwinding
50 from it and the ?lm passing to the 'take-up spool
move in the same direction.
This feature in one
of its broad aspects includes the mounting of a
resilient member so that it assists in preventing
unwinding of the ?lm during shipping and during
55 picture taking it functions to maintain the ?lm
at constant speed through any suitable or known
mechanism carried by the camera for coopera
tion‘ with the spindle. When desired, the spool 40
II and stub shaft I! may be arranged so that
there is a slight frictional engagement between
them, so that the spool II will readily turn when
the ?lm is pulled, and on the other hand, so that
the slight friction may assist in preventing un- 45
wanted’ rotation of the spool. Moreover, the
spool l2 and spindle It may be so constructed
that while the spoolordinarily rotates with the
spindle, it may slip with respect to the spindle
when the latter for any reason runs too far ahead 50
of the intermittent feeding mechanism. While
the present invention is not restricted to the de
tails through which these spools II and I? are
assembled or driven, and while these details may
vary in accordance with familiar machine shop 66
2
2,118,896
practice, reference may be made to our copend
ing application Serial No. 604,162, ?led April 9,
1932, now Patent No. 2,022,353 of November 26,
1935 for a particularly satisfactory structure for
these purposes. Or the frictional engagement
and slip may be provided, as shown by the rela
tive sizes and ?t of the shafts or spindles with
the interior openings of the spools.‘
'
The ?lm from the take-off spool which rotates
10 in a counterclockwise direction in the embodi
ments shown herein, passes over the curved upper
end 23 of a gate plate l6 which may advantage
ously, though not necessarily, take the vgeneral
form shown, and which may be bolted to the bot
15 tom wall l5 of the magazine. This gate plate is
provided as indicated at H with a suitable press
er plate normally urged forwardly by a spring
l8 seated in a recess IS in the gate plate. The
presser plate I‘! serves to urge the ?lm which is
being exposed into a position where it. lies ?at
across a window or aperture (not shown) formed
in the front side or edge wall 20 of the magazine
l0 directly in front of the presser plate l1. Suit
able recesses 2l and 22 may be formed in the
the resilient member 26 may be of shorter length
and mounted to de?nitely press against the full
roll of ?lm on the take-o?.’ spool with only the
strip of ?lm from portion 24 of the ?lm gate to
the take-up spool between. In such an instance
and during the movement of this strip of ?lm the
resilient member 26 will be ?exed away from
the roll of ?lm on the take-off spool as described
above.
'
It will be noted that the ?lm passing from the
lower end of the gate plate to the take-up spool
is not con?ned to any particular channel, or pas
sageway, and thus the ?lm runs free without ex
cessive friction, and with the advantage that the
spring mechanism and other parts of the ?lm 16
feeding mechanism in the camera may be rela
tively light.
While the ?lm may pass directly from the end
24 of the gate plate to the take-up spool II, it
may be advantageous to employ a guide post or
roller 30, preferably mounted adjacent the lower
right-hand corner of the casing ID, to cause the
between the free end of arm 26 and the guide
to take an indirect path, so that the ?lm may be
front face of the gate plate l6 for enabling a wound upon the take-up spool without sharp
bends. While the post is preferably located about
claw and pin, respectively, or other parts of suit
in the position shown, it may take other posi
able intermittent mechanism to enter the sprock
et holes in the ?lm, for intermittently drawing tions, and indeed it may be omitted altogether.
In order to assist in effecting a smooth, com
it rapidly forward and stopping it during each
exposure. Advantageous mechanism for this is pact winding of the ?lm on the take~up spool,
shown in copending application Serial No. -a suitable arm 3| may be pivoted upon a pin 32
729,594, ?led June 8, 1934, in the name of Albert carried by a forked bracket 33 secured as by piv
Kindelmann. As indicated at 23 and 24, the oting or otherwise to the one of the side or edge
upper and lower ends of the gate plate It‘: may walls of casing, with a coil spring or other suit
be suitably curved so that sharp bends in the ?lm able device engaged with the post 32 and urging
the arm 3| against the ?lm while it is wound on
are avoided.
'
From the lower end of the gate plate ii, the‘ spool l2. These details, however, may be varied
?lm travels to the take-up spool I2 over the __ to suit convenient practice.
The operation of the construction will no doubt
curved, free end 25 of a resilient member 26, the
be understood from the foregoing description, but
other
end
of
which
is
preferably
‘astened
to
one
40
of the side or edge walls 9 of the casing at any it may be summarized here. When the take-up
convenient point, for instance, by means of a spool I2 is continuously rotated at its predeter
mined speed, with suitable intermittent mecha
rivet 27. The ?exible member 26 may be com
nism alternately pulling the ?lm forward ad
posed of metal or other suitable material, con
structed and arranged so that the free end 25 jacent the ?lm gate, and stopping it for exposure, 45
constantly tends to ?ex upwardly ‘to a suitable the resilient device 26 assists in drawing forward
extent into the space between the spools II and exposed ?lm during the time that the ?lm pass
H, for urging the strip of exposed ?lm passing
from the gate to the take-up reel, against the
outside of a full roll of ?lm on the take~oif spool,
50 preferably along a surface located generally be
tween the three o'clock and six o'clock positions
of the spool H as'viewed in Fig. 1. In-this man
ner, the member 26 may be made exceptionally
long as is desirable for present purposes, with the
55
?xed end conveniently located, and with the en
tire member freed of undesired interference with
the ?lm in the magazine. That is, the ?lm strip
contacts only a relatively small surface near the
end of the ‘member 28 and not with any extended
portion of its length.
The resilience of the spring 26 is advanta
geously such that when the take-up spool l2
starts to wind the ?lm, this action will cause the
?lm between portion 240i the gate and the take
05 up spoolto pull the end 26’down slightly so as to
relieve the engagement of this portion of the ?lm
and the ?lm on the take-oi! spool. Furthermore,
the resiliently mounted member may be so ar
ranged that it either operates as described during
70 the feeding of the initial portions of the ?lm from
the takego? spool, or swings up as the diameter
of the ?lm on the spool I l decreases, as far as de
It is to beu'nderstood in some instances that
ingrthrough the gate is being rapidly moved by
the intermittent mechanism, thus cooperating
with the gate plate assembly, which includes the
presser member H, to hold ?at each ?lm section
or frame while it is exposed at the aperture.
Moreover, the resilient member 26, by bearing
against the ?lm asdescribed, assists in prevent- ‘
ing unwinding of the ?lm on the take-oil.’ spool 55
during shipment or handling of the magazine.
0n the other hand, friction between the ?lm on
the take-off spool and ‘the ?lm passing from the
gate to the take-up spool is relieved to permit the
intermittent mechanism to draw the ?lm o? the
take-off spool as required, all without the need
for separately driving the take-off spool, or other
complicated mechanism.
so
4
Referring now to Fig. 2, wherein like parts are
referred to by like numbers, except that in Fig. 2
‘a prime (') is used with each number, there is
shown a somewhat modi?ed construction, which
is in most respects similar to the construc
tion shown in Fig. 1, except that, instead of the 70
resilient member 26, there may be provided a sim
ilar device 35 having, if desired, a roller 36
mounted in any convenient manner upon its free
end, and being secured to the side or edge wall I
of the magazine, for instance, as ‘shown at 31,
3
2,118,896
this member 35 operating similarly to the resilient
member 28 previously described.
It will thus be appreciated that there is pro
vided a simple ?lm magazine which is inexpensive
to construct and e?lcient in operation. Moreover,
this magazine avoids the need for a channel or
passageway or any extended surface of contact
for the ?lm and thus allows more room in a
magazine of given size for receiving ?lm, while
10 avoiding undesired friction. In addition, the
?lm on the take-off reel is held su?lciently dur
ing shipment of the magazine to prevent unroll
ing of the outer layers of ?lm, and the exposed
?lm section which bears against the ?lm on the
15 take-o? reel is slacked oif during the operation
of the mechanism to enable a free feeding of
the ?lm to the gate. When a guide post or roller
is employed in combination with the resilient
member or roller or the like, there is provided
20 an improved ?lm path for present purposes, all
without occupying excessive space in the maga
zine. A particular advantage of the present con
struction lies in the employment of a gate plate
of present character in combination with the
25 other features-described, whereby the ?lm in the
gate is maintained ?at and steady during the time
when exposures are made.
The terms and expressions which have been
the take-up spool to form a bent section therein
and urge said portion against ?lm on the take-off
spool and to ?ex away from the take-01f spool in
response to tension placed on said bent section
of ?lm during operation of the take-up spool, and
an element adapted to guide the ?lm in an indi
rect path from said means to the take-up spool.
4. In a motion picture ?lm magazine, in com
bination, a take-off spool, a continuously driven
shaft, a take-up spool mounted thereon and driv 10
en thereby, gate means including a presser, plate
adapted to yieldingly bear against the ?lm ‘in
the gate, said gate means being constructed and
arranged to provide openings to permit inter
mittent mechanism to engage the ?lm, and resil
15
ient means mounted on a wall of the magazine
and urged toward the take-o? spool for engaging
a‘portion of the ?lm between the gate and the
take-up spool to form a bent section therein and
for urging said portion against the ?lm on the 20
take-off spool between the three and six o'clock
positions of the latter.
5. In a motion picture ?lm magazine, in com
bination, a take-off spool, a continuously driven
shaft, a take-up spool mounted thereon and driv-~ 25
en thereby, gate means including a presser plate
adapted to yieldingly bear against the ?lm in the
gate, said gate means being constructed and ar
employed are used as terms of description and
30 not of limitation, and there is no intention, in
the use of such terms and expressions, of exclud
ing any equivalents of the features shown and
ranged to-provide openings to permit intermit
described, or portions thereof, but it is recog
nized that various modi?cations are possible
35 within the scope of the invention claimed.
We claim:
portion of the ?lm between the gate and the take
up spool to form a bent section therein and for
urging said portion against the ?lm on the take; 35
o? spool between the three and six o’clock posi
tions of the latter, and a guide element adapted
1. In a motion picture ?lm magazine including
a take-o? spool, a continuously driven take-up
spool and a gate past which the ?lm is inter
40 mittently moved from one spool to the other, and
a resilient arm urged toward said take-off spool,
said arm having a curved end adapted to engage
a portion of the ?lm between the gate and the
take-up spool to form a bent section therein and
45 urge said portion against ?lm on the take-off
spool.
2. In a motion picture ?lm magazine including
a take-o? spool, a continuously driven take-up
spool and a gate past which the ?lm is intermit
50 tently moved from one spool to the other, and
resilient means urged toward said take-off spool,
said means having a curved portion adapted to
engage a portion of the ?lm between the gate
- and the take-up spool to form a bent section
55 therein and urge said portion against ?lm on the
tent mechanism to engage the ?lm, resilient
means mounted on a wall of the magazine and
urged toward the take-off spool for engaging a
to cause the ?lm to take an indirect path from
said resilient means to the take-up spool.
6. In a motion picture ?lm magazine including 40
a take-off spool, a continuously driven take-up
spool and a gate past which the ?lm is inter
mittently moved from one spool to the other,
and a resilient member engaging a span, of the
?lm between the gate and the take-up spool adja 45
cent the take-off spool to form a bent section
therein which is unobstructedly urged toward the
take-off spool sumciently to cause engagement
between the span of ?lm and the ?lm on said
spool at times.
50
7. In a motion picture ?lm magazine including
a take-o? spool, a continuously driven take-up
spool and a gate past which the ?lm is inter
mittently moved from one spool to the other, a
guide which in cooperation with the end of guides 55
adjacent the gate provides ?xed supports for the
take-o? spool, and to ?ex away from the take-off
spool in response to tension placed on said bent
section of ?lm during operation of the take-up
ends of a span of ?lm, and a resilient member
spool.
the take-up spool adjacent the take-off spool to
3. In a motion picture ?lm magazine including
a take-o? spool, a continuously driven take-up
spool and a gate past which the ?lm is inter
mittently moved from one spool to the other, and
resilient means urged toward said take-o? spool,
65 said means having a curved portion adapted to
60
engage a portion of the ?lm between the gate and
engaging the span of ?lm between the gate and
form a bent section therein which is unobstruct
edly urged toward the take-off spool su?iciently
to cause engagement between the span of ?lm
and the ?lm on said spool at times.
Jumps PEARLMAN.
ALBER'I' KINDELMANN.
60
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