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76
EXHIBITORS HERALD-WORLD
June 21, 1930
W
SOUND PICTURES
F. H. RICHARDSON on PROJECTION
BLUEBOOK SCHOOL QUESTION NO. 56. — Does a storage battery itself generate power?
What kind of current must be used for charging storage batteries? Describe the various elements of storage batteries.
A NEW METHOD OF SPLICING SOUND TRACK FILM
YOU all very well know what an ingrowing nuisance it is to have to daub around painting film sound splices with black lacquer. A nice messy
i
FIG. 1
little job, what? Also, how often have YOU been caught without the right sort of lacquer, or with the brush gone hay wire,
and you just plain had to make a bum job of it — a job for the projectionists who use that film afterward to turn up their honorable noses at and call you uncomplimentary names.
Well, gentlemen, you can now side step all that bother if you really want to and if you will expend a bit of energy and a two-cent pink photograph of George Washington in advising the Eastman Company of that fact. Just address Manager, Motion Picture Film Sales Department, Eastman Kodak Company, Rochester, N. Y., mail it and that’s that. Those chaps up at Rochester do things, and it is one of their doings that I will now set forth for your edification.
In Figure 1 (at left) we see a bit of film stock five sprocket holes in length by a suitable width to cover the sound track, as per Figure 3. This bit of film is three one-thousandths (0.0003) of an inch thick. It is coated with emulsion, exposed and developed, so that it is perfectly opaque. At right, in Figure 1, we see the same sort of a patch of film, with a small tab attached, by means of which it may be quickly and accurately handled.
With such an opaque patch on hand, when a splice in the film is completed, instead of messing around with a brush and lacquer, one may just lay the splice on the block shown in Figure 2, lay the opaqued
FIG. 2
FIG. 3
patch on the registration pins (first having applied cement to its under side), bring the pressure clamp down, hold it tightly a few seconds, and one has a perfectly opaqued splice.
In Figure 3, you have a look-see at the finished splice, with the opaque patch in place. Looks pretty thorough, what?
But when I took the matter up with the Eastman company, asking when these patches would be available, I was informed that because it seemed doubtful that there would be sufficient call for them to justify the expense of tooling up to make them, it was not at all certain they would ever be put out. So I told them I would ask you men whether or not you wanted anything of the sort, and that’s what I am now doing.
The patch is so thin that while it will add strength to the film splice, it won’t make it in any degree objectionably stiff.
If you would like to have such a thing available, it is now up to you to advise the Eastman company. Unless you do, and in considerable numbers, you won’t get it. It is up to you! I recommend that you grab that stub of a lead pencil and get busy.
TELEVISION SOON?
WE all by now know that, on May 22, at the Ri K O Schenectady theatre, Dr. E. F. Alexanderson of the General Electric Company, put on a television show in which the voice was carried through the air the same as was the picture. The transmission by air was for a distance of one mile. Now (Continued on page 78, column 3)