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Патент USA US2409092

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0a. 8, 1946.
J. YOLO
I 2,409,092 ‘
SPLICE FROG FOR TEMPORARILY JOINING MOTION PICTURE FILM SECTIONS -
Filed Oct. 19, 1944
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INVENTOR
JOSEPH vow
BY
'1
." z ,.
ATTORNEY
Patented Dot. 8, 1946
2,409,092
UNITED STATES PATENT OFFICE
2,409,092
SPLICE FROG FOR TEMPORARILY JOINING
MOTION-PICTURE FILM SECTIONS
1
Joseph Yolo, Yakima, Wash.
Application October 19, 1944, Serial No. 559,470
7 Claims. ( Cl. 88-195)
This invention relates to mechanical means for
temporarily joining di?erent sections of motion
picture ?lm in general, and particularly for join
ing the sections of master negative ?lm being cut
to match scenes for the edited Work print pre
2
to those skilled in the art, from the following de
tailed description of a preferred form of the in-'
vention, which consists of certain parts in coop
erative combination, hereinafter described, illus
5 trated in the accompanying drawing and em
braced in the appended claims.
Heretofore it has been common practice to
In the drawing:
make such a temporary connection by means of
Figure 1a. is a top plan .of the splice frog com
a well known bent wire paper clip, which is pre
prising my invention;
vented from injuring the ?lm by using a piece of 10
Fig. 1b is a bottom plan view of the same which
paper that is folded to ?t over the lapped ?lm
is cross-hatched to indicate preferably a black
portions under the paper clip and then folded
color;
back over both outside portions of the clip to
Fig. 2 is a plan View of two lapped motion pic
paratory to permanent splicing and printing.
protect other sections of the ?lm as it is wound
ture ?lm sections having aligned sprocket wheel
upon a takeup reel. Such a connection requires 15 apertures, with the head of my splice frog in
considerable care and time to make properly, and
serted into one pair of said aligned apertures,
is very easily separated.
constituting the ?rst step in making a temporary _
Great care must be used to avoid damaging the
splice;
negative from which release prints are made be
Fig. 3 is another plan view of the same‘show
cause any scratch, crease or cut on the negative 20 ing the tail of said splice frog inserted in a nearly
will show on the prints made from it. When the
wire clips and folded paper guards are used, as
described above, in addition to the danger of
transversely opposite pair of said aligned aper
tures, this being the second step in making said
splice;
scratching the ?lm in making the temporary
Fig. 4, likewise, is a plan view of the same show
connection, there also is the danger of the Wire 25 ing said splice frog in its ?nal position with the
clips making objectionable creases in the ?lm if
allowed to remain in place too long. Further
more, the thick wire clips and folded paper guards
tail fully inserted in said apertures past the en
larged crooked portion to complete the temporary
splice.
form objectionable lumps that seriously reduce
Like reference numerals are used to indicate
the footage of ?lm that can be wound upon the 30 like parts throughout the drawing, wherein the
takeup reel.
splice frog in its entirety is indicated by the nu
The improvement comprising my invention is
meral I, and the head, tail, tip and tail crook
characterized by a body and specially formed ‘
by the numerals I 0, Id and I e, respectively.
'
head and tail, which form what I term a splice
Figs. 2 through 4 show top section 2a of the ?lm
frog that may be stamped from any suitable sheet 35 overlapping bottom section 21), with their ends at
material by means of the well known punch and
2a’ and 2b’, respectively. Frames 4 containing
die press.
the successive pictures, not shown, preferably are
An object of my invention is to provide an in
aligned, thereby aligning the two rows of sprocket
expensive splice frog for temporarily joining
wheel apertures, which are indicated in general
lapped motion picture ?lm sections more securely 40 by the numeral 3.
and quickly than has heretofore been done, and
After said apertures have been aligned, the
without the risk of damaging the ?lm.
lapped ?lm sections may be held in position by
Another object is to provide a splice frog of the
grasping them between the thumb and fore?nger
class described, whereby the lapped motion pic
by one of the user’s hands, while he picks up a
ture ?lm sections having aligned sprocket wheel 45 splice frog with its light-colored side up by grasp
apertures are temporarily joined by inserting the
ing its back If between the thumb and fore?nger
head and tail of said splice frog through said
of the other hand.
aligned apertures.
This enables him to insert head Ic through any
A further object is to provide a splice frog of
convenient pair of aligned apertures, such as 3a
the class described having a body portion so re 50 near one edge of the ?lm as shown clearly in
lated to its head and tail that they coact to cause
Fig. 2. The splice frog is then rotated so the
said head and tail to function as hooks to prevent
tip of the tail Id may be inserted slant-wise
the separation of the ?lm portions when joined
through any one of threesuch apertures 3b, 30
as hereinafter described.
or 3d near the opposite edge. As shown in Fig.
A still further object is to provide a splice frog 55 3, the user has inserted tail tip Id through aligned
of the class described having a body portion that
apertures 3b. It will be noted that these need
is adapted to be grasped between the thumb and
not be directly opposite apertures 3a across the
fore?nger of the user’s hand while inserting said
?lm, because of the slight resiliency of the said
head and tail in the aforesaid aligned apertures.
tail portion. The splicing operation is completed
Other objects and advantages will be apparent 60 by pushing saidvtail all the way through aper-w
2,409,092
3
tures 3b past crook le near the root of the tail.
The ?lm and splice frog then may be released
and the spliced ?lm wound upon a take-up reel,
not shown.
It will be seen that the head portion lc of my
splice frog is bent or hooked in One direction to
ward the edge of body portion If, and that the
tail composed of portions Id and le, in general,
is hooked in the opposite direction toward the
edge of body portion lg. This is an important
feature of the invention, as hereinafter ex
plained.
After the splice frog has been inserted as il
lustrated in Fig. 4, body portion lg so coacts with
4
having oppositely disposed edges, a head portion
hooked toward one edge of said body portion and
a tail portion hooked toward the. opposite edge of
said body portion.
2. In means, termed a splice frog, for tempo
rarily splicing motion picture ?lm, the combina
tion of a body portion having oppositely disposed
edges, a head portion hooked toward one edge
of said" body portion, and a tail portion in gen
eral hooked toward the opposite edge of said body
portion, said tail portion being characterized by
a crook intermediate of its tip and juncture with
said body portion.
3. In a splice frog of the class described, the
combination of a body portion having oppositely
said tail as to form a hook that prevents ?lm 15
part 21)‘ from being pulled‘ away‘ from part 22:.
Likewise body portion if coacts with said' head
disposed‘ edges, a head portion hooked‘ toward
one edge ofvv said body portion, and a tail portion
hooked toward the opposite edge of said‘ body
so as to‘ prevent ?lm part 26 from being pushed
portion and‘ characterized by an enlarged‘ crook
longitudinally with reference to ?lm part‘ ‘in.
the‘ root‘ ofthe'tail.
The tail portion past crook te preferably is‘ a 20 near
4. In’ a splice frog for temporarily joining
snug ?t in aperture-s 3b transversely of the ?lm.
lapped motion picture ?lm sections‘ having two
From the foregoing it will be seen that after
rows of aligned sprocket sprocket wheel aper
the splice frog of my invention’ is inserted‘ as
tures, the" combination’ of a body portion‘ having
herein described and illustrated in the drawing,
the. spliced portions are‘ prevented from separat 25 oppositely disposed edges; a head‘ portion hooked
toward one edge of said‘ body‘p'ortion and adapt‘
ing either longitudinally or transversely, .espe
ed to-be inserted through a pair of aligned’ said
cially after the splice has been wound upon said
apertures of one row, and a tail portion adapted
take-up reel.
then to be‘ inserted‘ slantwi‘se through a pair of
The splice frog may be made of any suitable
said aligned apertures‘ in the other row‘ by turn
material, but I prefer to use sheet Celluloid
ing said body portion in the general direction to
which is supplied with a white coatingv on the
top side and a black coating on‘ the bottom side.
ward its other edge.
‘
5. In a splice frog for temporarily joining
lapped motion picture ?lm sections having two
die, not shown, and will not scratch the film.
It is desirable‘ that the thickness of this sheet 35 rows‘ of aligned‘ sprocket wheel‘ apertures, the
combination of a body portion having oppositely
material be comparable to that of the motion pic'
disposed edges, a head portion adapted to be in
ture ?lm to be temporarily spliced.
serted’ through a pair‘ of said aligned apertures
A right-handed person would insert the‘ splice
- This material is easily cut by a steel punch and
in one row, and a‘ tail‘ portion hooked toward one
frog with its white side up, and the‘ dual coloring
assists the user in quickly grasping the'back so 40 edge. of’ said: ‘body portion and" adapted then to
be‘ inserted slantwise' through a pair of said
it may be inserted quickly and properly. A left‘
aligned‘ apertures‘ in' the other row by turning
handed person may prefer to insert the splice
said‘ body portion‘ in the general“ direction in
frog with its black side up and using his’ left
hand, in which case that‘ color, likewise, assists 45 which said tail‘ portion is'pointing'.
6. Iir a’ splice frog for temporarily joining
the user in using it quickly and properly. From
lapped motion picture ?lm sections having two
the foregoing it will be apparent that the splice
frog will function satisfactorily with either side
up, but when inserting the‘ splice frog with the
, rows of aligned sprocket wheel apertures‘, the
from other materials and used for other‘ pur
poses, without departing: from the scope of‘ the
invention de?ned in the appended claims‘. What
I claim- as new and desire tov protect, by Letters
tion has been so inserted, whereby saidhead and
0 bod-yr portions coact to resist the separation of
said lapped film. sections in one direction and
combination of’ a body portion havin'g'oppositely
disposed‘ edges, a head‘ portion‘ adapted‘ who in“
left hand I prefer’ to have the left portion lapped
under the right portion of. the
instead; of O 'serted' through a. pair of said aligned‘ apertures
in one‘ row, and" a‘ tail portion hooked toward'one
lapped over said right portion as shown in the
edge of said body portion and having an en'
drawing;
lla'rged crookf near its root; sa‘idl tail'being adapt—
When the‘ user later desires toseparat‘e the
ed‘ then ‘to-be‘ inserted slantwise through a pair
?lm sections of the temporary splice‘ for further
editing or to make a permanent splice, he graps CR 5 of: said aligned apertures in the other'row by
turning- sa-id' body portion inthe' general direc
the lapped portions of the ?lm between thumb
tion in which said tail’portion‘ is pointing;
and fore?nger of one hand, as when preparing
7. In 2: splice‘ frog- for temporarily splicing mo
to make‘ the temporary splice, then‘ grasps‘ back
tion picture ?lnihaving lapped sections with two
If of the splice frog between the thumb and fore
?nger of the other hand, withdraws tail portions‘ 6 0 rows! of’ aligned sprocket wheel apertures, the
combination of’v a’ body portionhaving oppositely
le and !d from apertures 3b, rotates the splice
disposed edges, a head=portion hooked toward one
frog slightly and withdraws head 10 from aper
edge of said body portion and adapted to bein
tures 3a;
serted- through a pair of aligned said: apertures
Having illustrated and described a preferred
form of my invention, it ‘will be-appa-rentito those C) ofTone row; and a tail portion hooked toward the
opposite edge of‘ said! body: portion and adapted
skilled in this» art that the- essential cooperative
tef be inserted slantwise through- a pair of said
elemental parts thereof may be shaped and com
apertures‘ in the other'row after said. head. por
bined in various other equivalent forms, made
Patent is:
,
1. In means for‘ temporarily splicing: motion
picture ?lm, the combination of' a body portion 7 5
said tail. and body portions coact to resist the
separation. of the same in the opposite direction
period:
JOSEPH YOLO.
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