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MANAGERS AND PROJECTIONISTS 281
ANOTHER FORMULA.— Equal parts of amyl acetate and acetone. Will not turn white on film, and will not dissolve the film as ether will. Works on all kinds of stock. Best used with an all steel 3 flap film mender. Can be used by those making patches by hand if worked rapidly. Scrape film, use small camel hair brush ; keep bottle tightly corked when not in use.
STILL ANOTHER.— One ounce collodion; 1 ounce banana oil or bronzing liquid ; Y* ounce ether. For Pathe hand colored films, y2 acetone and Yz ether.
N. I. CEMENT.— For non-inflammable film add 1 part rjlacial acetic acid to 4 parts of flexible collodion to any of the film cements. It is satisfactory for either N. I. or regular film.
FILM REEL CONSTRUCTION.— Immense amount of damage has been done to film in the past by reason of the flimsy construction of reels. The earlier practice was to use a wooden hub \Y-2. inches in diameter, upon which was mounted two rather flimsy, more or less open, metal reel sides. The hub itself had little stability, its diameter was absurdly small, and the reel sides entirely inadequate to withstand the abuse to which they were, in ordinary practice, subjected.
Of late years there has been a tendency to increase the diameter of the hub to about 5 inches, and to make it of metal instead of wood. The sides of most reels we have as yet seen are still entirely too flimsy. They bend too easily, and a bent reel is a prolific source of damage to film, not only by reason of the fact that there is the possibility of the b,ent reel rubbing on the sides of the upper magazine, thus acting as a brake and subjecting the film to a heavy strain between the upper sprocket and the reel, particularly at the last end of the run, but also by reason of the fact that the bend may be inward, thus pinching the film between the two sides, both while being projected and in the process of rewinding.
In order to save in first cost of reels and shipping weight, film exchanges have favored a light weight, flimsily built, cheap reel, notwithstanding the fact that the damage done to film by small hubs and bent reel sides, amount to many time the "saving" accomplished by the foolish proceduce.
We strongly recommend to exhibitors that they equip their projection rooms forthwith with a full complement of the best reel obtainable, and that, if necessary, they oblige