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Патент USA US2105530

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Jan. 18, 1938.
J. M. GOLDBERG
MOVING PICTURE FILM REEL
Filed Dec. 4, 1936
2,105,530
2,105,530 I
Patented Jan. 18, 1938
\UNITED STATES PATENT OFFICE
2,105,530
‘MOVING PICTURE FILM REEL
Jacob M. Goldberg, Denver, 0010.
Application December 4, 1936, Serial No. 114,171
(Cl. 242-70)
3 Claims.
.
that they shall be identical, but it is preferable
This invention relates to improvements in reels
because both can then be formed by a single ‘die. .
and has reference in particular to a reel of the
The sides have offset circular, areas 1' that are‘
type employed for moving picture ?lms.
connected to them by substantially cylindrical
In U. S. Letters Patent 2,051,334 granted to - walls 8. From Fig. 2 it will be observed that the 5
me on August 18, 1936, a ?lm reel, constructed center ‘portions, 1 are surrounded by beads or
almost entirely from sheet metal formed by
proper dies is shown. The present invention is
in the nature of an improvement in the struc
ture of the reel disclosed and claimed in the pat
ridges 9 which abut when the reel is assembled, in
ent above indenti?ed.
with a plurality-‘of holes l0, six'lbeing shown.
the manner shown in Fig. 2.‘ The beads are not,
however, essential to: this invention.
.
It is the object of this invention to produce
a ?lm reel of substantial construction that can
be formed almost entirely of sheet metal, drawn
to the desired shape‘ by dies.
Another object is to produce a' reel in which the
16
hub, is positively held from rotation in the reel
and whose construction is such that it will with
stand the severest strains to which it may be
The offset areas or portions 1 are provided 10
These holes are formed in a circular row by-the '
dies and alternate holes are punched out full
subjected in normal operatiomwithout- breaking
size, while the others are drawn so as to leave'a'
cylindrical ?ange like that indicated by dotted 15
lines in Fig. 2 and designated by numeral II.
The tubular ?anges ‘are in the nature of tubular
rivets andare employed to hold the parts in as
sembled relation, as-will hereinafter be pointed
loose from the reel or moving transversely there
of.A further object is to produce a construction.
in which the 'hub is provided with a radialv ?ange
or plate secured to it in such a way that neither
relative, rotary. longitudinal or wobble move
M Di
out. The o?set portions 1 may each have an in- 20
tegral hub portion l3, provided with a central
opening I4, surrounded by an inwardly directed
?ange l5, whose function will appear as the de
scription proceeds.
'
i
A metal plate 16 is positioned in the space be- 25
twen the opposed or adjacent surfaces of the
offset portions ‘land this plate is providedv with .
A still further object of this invention is to openings of the proper size to receive the tubu
produce a reel having a tubular» elo'ngatedhub‘ lar ?anges H,v which in the assembled reel, are
whose ends are engaged by the‘.v edges of open
?anged outwardly in the manner common with 30
ings in hub portions of the side members,‘ in such tubular rivets andthe ?anges I‘! serve to secure
3 O a way that it is braced against accidental dis
the sides and theplate l6 together as a unitary;
ment
can
take place.
'
_
I
‘
_~
_
'
I
placement from its perpendicular position and in
which the hub portions of the side members also.
serve to prevent axial displacement of the hub.
The above and other objects that may become
apparent as this description proceeds are at
tained by means of a construction and an ar
rangement of parts that will now be described
in detail, and reference for this purpose will be
40
had to the accompanying drawing in which the
structure has been illustrated and in which:
Figure l is ‘a side elevation of the reel, to a
reduced scale;
Figure 2 is a section taken on line 2-2, Fig. l.
45
and shows the center portion of the reel to a
scale approximately twice that used in Fig. 1;
Figure 3 is a view, partly a plan and partly a
section, taken on line 3—-3., Fig. 2;
Figure 4 is a side elevation of the hub member
the anchor plate that is attached to it;
v50 . andFigure 5 is a fragmentary section showing a
modified construction; and
Figure 6 shows a slight modi?cation.
The reel comprises two side members 6 that
are identical in size and shape. It is not essential
assembly. The thickness of plate 16 is such that 1
it will ?ll the space between the offset portions
when the heads 9 are in contact, as shown in 35
Fig. 2. If the construction illustrated in Fig. 6
is employed, the thickness of the plate and the
extent of the offset must be so calculated that
the distance between the inner surfaces of the
sides will be 'su?icient to receive the ?lm. It is 40
evident that the plate l6, when the parts are as
sembled, will be positively held against rotation,
and when the plate is made from steel, it will
impart great strength and rigidity to the center
45
portion of the reel.
Plate 16 is provided with a central opening of
any suitable shape, either round, polygonal or
oblong and the center of this opening must coin
cide with the center of the cylindrical walls 8
and I3. The center opening in plate IE is formed 50
by dies in such a way as to leave a ?ange 18 that
engages the outer surface of an elongated tubu
lar hub memberlQ, whose size and shape is such
that it will ?t the opening with a snug driving
?t. Since the ?ange I8 is formed by dies, the 55
2
,
.
2,100,080
side of this ?ange can be formed perpendicular
substantially identical circular side members, each
having a central circular area, o?'set from the
will be positioned with its axis
perpendicular to the plate. If the hub member
l9 has a circular cross section, it is preferably
welded to the ?ange l8.v
When a square or non-circular hub member is
employed, the ends are‘made circular, as indi
10 cated at 20, whereby shoulders 2| are formed
against which the flanges I5 rest; this serves to v
'15
with ?anges 22 that are overlapped and provided
by the edges
of parts 1’.
\,
‘
Plate l6 serves as an anchor for the hub mem
ber l9 and positively
20
its axis perpendicular to the
plane of plate 5, and this action is further assisted
by the action of the hub portions l3 and Ba.
The sides 6 are provided with the usual open
25 ings 23 and have strengthening ribs 24.
The circular surfaces 1, 1' and 1" are oifset to
an extent that is
to oneshalf
20
25
'30
30
of the plate, and means for e?fecting a non-rotat
between the hub and plate.
to one-half the thickness of plate
before described.
Reels constructed in accordance with this in
ventioncan be formed from sheet metal, with
the exception of the hub member l9, and] it is
40 also practical to form this from
formed into a tube.
Due to the fact that plate '
40
I6 is quite rigid and is ?rmly attached to the '
hub IS, the reel will
cessfully resist forces
45
as new is:
50
t
1. A moving picture ?lm reel comprising two
JACOB M. GOLDBERG.
50
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