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splice double that of an experienced operator using the smaller or hand operated devices; while the machine operator, with a few days' experience, turns out four or five times the quantity of splices that was previously possible, besides very materially improving the quality of the product. The machine is provided with two pilot register pins, located in fixed relation to the frame line of the film
Fig. 1. B and H Semi-Automatic Film Splicing Machine
to be spliced, which automatically compensates for any shrinkage that might exist in the stock; that is, both ends of the film to be spliced locate from the same pins, thereby affecting correct registration. Besides greatly facilitating the setting-up operations, as well as scrapping, cementing, etc., the machine automatically shears and discards both the superfluous film ends, throws off excess cement, and leaves the splice a bonded portion of the film, clean and free from the necessity of wiping or trimming. An electric heating unit, placed beneath the lower cutter plates, furnishes heat to hurry the drying of the cement, so that the splice ordinarily is ready for immediate service.
It is not the purpose of this paper to recommend the adoption of any particular size or kind of splice, nor to suggest a standard; but to show what has been acoomplished in the development of a machine which may be adjusted to conform to almost any desired type of splice, and to compare its results with those most commonly used in the industry; further, to show, by comparison, the superiority of service which has been determined by exhaustive experiments
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