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Patented Oct. 1, 1946
2,408,384
UNITED STATES PATENT OFFICE
2,408,384
FILM VIEWING DEVICE
Robert W. Farrell, New York, N. Y.
Application January 20, 1945, Serialv No. 573,651
2 Claims.
1
This invention relates to ?lm viewing devices.
One object of the present invention is the pro
vision of a ?lm viewing device in which anv end
less ?lm can be positioned and moved in rela
tion to a viewing opening.
Another object is the provision of a viewing de
vice constructed and arranged to facilitate the
insertion of a ?lm in operative movable relation
(Cl. 88-17)
.
2
ing I6 and the light outlet 24 of the light com
partment so that successive portions of the ?lm
may be viewed while knob 36 is rotated.
Casing I2 is preferably formed in two parts.
One of said parts comprises the side wall 33 and
the peripheral wall 38 and the other of said parts
comprises the removable side wall or cover 32.
The part which comprises side wall 30 and pe
to the viewing opening and to the ?lm moving
ripheral wall 33 may be molded or otherwise
means with which the device is provided.
10 formed in one piece, and the tubular viewing
A further object of the invention is the provi
member [8 is preferably formed integrally with
sion of a ?lm viewing device which is particularly
the front portion of peripheral wall 38. The light
well adapted to be used as a toy, without being
compartment 22 is de?ned by a peripheral wall
limited to such use.
49 which is preferably integral with side wall 30,
A further object of the invention is generally to 15 said peripheral wall extending widthwise from
provide a ?lm viewing device which is simple in
the inner surface of side wall 30 to the inner sur
construction and convenient in use and operation
face of the opposite side wall 32. Peripheral wall
and which can be produced at low cost.
41) is imperforate except at the light outlet open
The above and other objects, features and ad
ing 24 which is provided therein. When a ?lm F
vantages of the invention will be fully understood 20 is mounted in chamber [4, light outlet opening
from the following description, reference being
24 is sealed by said ?lm and since the light com
had to the accompanying illustrative drawing.
partment is otherwise in light sealed relation with
_In the drawing:
respect to chamber I 4, only the portion of the
Fig. 1 is a plan view of a ?lm viewing device
?lm which passes across light outlet opening 24
embodying the present invention;
” is illuminated. It will be understood that light
Fig. 2 is a sectional view on the line 2-2 of
inlet openings 26 and 28 communicate only with
Fig. 4;
the interior of light compartment 22 and that
Fig. 3 is a side view in elevation of the device;
chamber I4 is completely closed to the entrance
Fig. 4 is a sectional view on the line 4-4 of
of light except that which passes through light
Fig. 2;
30 outlet opening 24 and through the ?lm when the
'2 Fig. 5 is a sectional view on the line 5-5 of Fig.
latter is mounted within the casing in chamber
l4. Side wall or cover 32 of Casing I2 is provided
Fig. 6 is a front view of the device.
with a continuous peripheral ?ange 42 which ?ts
Referring now to the drawing in detail, the
snugly within peripheral wall 38 in frictional en
?lm viewing device [0 embodying the present in
gagement therewith.
vention is preferably formed by molding the same
The device is provided with means for mount
from a suitable plastic but can be formed of any
ing the endless ?lm in chamber l4 for movement
other suitable material or combinations of dif
around the light compartment 22 and across
ferentmaterials. As here shown, said device is
openings l6 and 24 in registry therewith in the
in the form of a casing l2 de?ning a chamber I4 40 space between said openings. As here shown,
within which an endless ?lm F is mounted for
said mounting means comprises the mounting
movement in relation to a viewing opening l8
members 44, 48 and 48 and also a portion 50 of
provided in a tubular member I8 having a mag
nifying lens 20 mounted therein. A light com
partment 22 is positioned within chamber l4 and
is provided with a light outlet 24 across which
peripheral wall 49 of light compartment 22, said
members 44, 45 and 48 and said peripheral wall
portion 50 having arcuately curved surfaces
which the ?lm F slidably engages during the
the ?lm travels and which registers with the view
movement of said ?lm by sprocket wheel 34.
ing opening 16. Light entrance openings 26 and
Members 44, 46 and 43, which are all of the same
28 for light compartment 22 are provided, as here
construction, are preferably formed integrally
shown, in the opposite side walls 3i! and 32, re 50 with side wall 3!} of the casing and extend from
spectively, of casing 12. A sprocket wheel 34 is
the inner surface of said side wall close to the in
disposed within the chamber 14 of casing 12 and
ner surface of the opposite side wall 32. It will
is rotated by an externally disposed knob 36 for
be noted that the ?lm guiding and mounting
moving the ?lm bodily to bring successive ?lms
means including members 44, 46 and 48 are po
or portions thereof in line with the viewing open- '
sitioned in chamber l4 so that the ?lm is spaced
2,408,384
3
4
from the inner surface of peripheral wall 38 and
Having thus described my invention, what I
from the inner surface of ?ange 42 of side wall
claim and desire to secure by Letters Patent is:
32. The portion of peripheral wall 38 adjacent
1. A ?lm viewing device comprising a casing
sprocket wheel 34 is provided on its inner surface
having a removable cover at one side thereof,
means within said casing for mounting an endless
with spaced ribs 52 which confront the adjacent '
?lm insertable edgewise into said casing through
peripheral edge portion of the sprocket wheel in
the open side thereof when the cover is removed,
position to hold the portion of the ?lm against
a light compartment within said casing and posi
substantial movement away from the edge of the
tioned therein so that the ?lm travels around
sprocket wheel whereby to improve the opera
said light compartmentexternally thereof when
tive engagement of the sprocket wheel in the
said ?lm is moved for the viewing of successive
sprocket holes of the ?lm, this effect being im
portions thereof, said light compartment having
proved by a transverse rib 54 (Figs. 2 and 5) pro
a light outlet opening closed by the ?lm when
vided on ?ange 42 of side wall 32. As shown in
the latter is mounted in said casing, said com
Fig. 2 ?ange 42 is also provided with another
lateral rib 55 which is positioned to be slidably 15 partment having a peripheral Wall extending in
the direction of the width of the ?lm and later
engaged by the portion of the ?lm passing be
ally between said cover and the side of said cas
tween guide and mounting members Hi and 48.
ing which is opposite said cover, said light-com
It will be understood that when side wall or cover
partment having a light-inlet opening in the
32 is removed, the ?lm can be inserted in and
plane of one of said sides of the casing, said
removed from the chamber l4 through the open
casing having a peripheral wall provided with a
side of the casing.
'
viewing opening in registry with said light outlet
As will be readily understood the viewing device
opening in spaced relation thereto, and means
can be used without requiring a lamp in the light
for movingsaid ?lm across said openings in th
compartment 22', since said light compartment is
illuminated by light which enters said compart- - ‘space therebetween.
2. A ?lm viewing’ device comprising a casing
ment through the light entrance openings 26 and
having a removable cover at one side thereof,
28, and said light can be either daylight or arti?
cial light of an illuminated room or of a lamp
positioned externally of easing l2 in light trans
means within said casing for mounting an endless
?lm insertable edgewise into said casing through
mitting relation with the interior of light com 30 the open side thereof when the cover is removed,
a light compartment within said casing and posi
partment 22. However, it is within the scope of
tioned therein so that the ?lm travels around
the present invention to provide a lamp within
said light compartment externally thereof when
the light compartment 22. Preferably, the inner
said ?lm is moved for the viewing of successive
surface of peripheral wall d8 of the light com
portions thereof, said light compartment having
partment or the portion thereof which confronts
a light outlet opening closed by the ?lm when the
light outlet opening 24 is provided as illustrated
latter is mounted in said casing, said compart
with a white or other light colored light reflect
ment having a peripheral wall extending in the
ing paper or other sheet material 58, or alter
direction of the width of the ?lm and laterally
natively said peripheral wall can be formed of
white or light colored material or its inner sur 40 between said cover and the side-of said casing
which is opposite said cover, said light-compart
face can be white or of other light re?ecting
ment having a light-inlet opening in the plane
color. Also, it will be understood that when a
of one of said sides of the casing, said casing
lamp is provided within compartment 22, the
having a peripheral wall provided with a viewing
device can be used to project the ?lm through
opening in registry with said light outlet opening
opening’ 15 onto a viewing screen, suitable lenses
in spaced relation thereto, said ?lm mounting
being provided, if desired in compartment 22 and
means including a peripherally extending por
in opening It, The above described viewing de
tion'of said peripheral wall of said light com
vice is intended primarily for use with endless
partment, said peripheral wall portion being dis
?lms of standard 16 mm; width, but can be made
posed adjacent a confronting peripheral wall
in any suitable size for use with ?lms or other portion of the-casing, and stationary means dis
transparencies of any other suitable width.
posed adjacent a peripheral wall portion of the
While I have shown and described the pre
casing opposite said ?rst mentioned peripheral
ferred' embodiment of my invention, it will be
casing-wall portion and means for moving said
understood that various changes may be made
?lm across said openings. in the space therebe
therein without departing from the underlying
idea of the invention within the scope of the
tween,
p
appended claims.
'
ROBERT W. FARRELL.
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