Reel Life (Sep 1913 - Mar 1914)

Record Details:

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it « 6^ rtU(,l,*:T(N NO, 5 Por Bulletin No. 5 we :have chosen the take-up device which, if studied carefully, will greatly assist every operator and help increase his earning capacity. This should be of considerable interest to the exhibitor, as it clearly sets forth indisputable facts and illustrates the great value he receives when ^purchasing a Simplex projector. For a projecting machine to work properly, it is important that the take-up device be of a design that can be relied upon to rewind the film unto the lower reel evenly, and the adjustments of the tension be few and simiple. Simiplicity and rigidity of the take-up device are important factors in successful operation. Unlike other projectors, the take-up device used on the Simplex projector is not driven from the lower feed sprocket shaft, but is directly belted to the main driving gear, thus 'balancing the entire mechanism and equalizing the strain on the main driving shaft. The take-up furnished with the regular 'Simplex equipment is of the well-known friction-disc type, belt-driven, as shown on Plate K. The details of the frictional-disc device are illustrated by Plate Kl. The pulley 26054 and the driving side of the disc No. 260 are made of a close-grain iron, which is carefully machined to insure accuracy. Part 2 60, the driving side of the disc, is directly connected to the take-up shaft No. 684. Friction disc No. 262 is of leather, 3 in. in diameter and in. thick. This operates between friction disc 260 and pulley 26054. Its duty is to transmit the tension with Pulley 260% thereby equalizing the speed. The take-up driving pulley No. 260}4 driven by belt No. 263H is forced to bear against leather washer 262 by spring 264, which is kept in place by a thimible 265 and set screw No. 266. Take-up shaft No. 684 is made of cold-rolled steel and is 9% in. long by ^ in. in diameter, and after turning, is carefully ground to insure accuracy. Tlie end that carries the reel is reduced to 5/16 in. to accommodate tlie ordinary reel, this being the prevailing diameter of the bearings of reels in this country. Tliis shaft is supported by a bearing on the spider casting No. 251, which is 2sA in. long, as shown on Plate K and K2. Anotlier advantageous point of the Simplex projector, and a time-saver, is the reel clips shown on Plate Kl. Their duty is to hold the reel onto the take-up shaft, so tliat the pin on 689 engages the reel. There are no reel clips to lose. The 3,000-ft. take-up device, as shown on Plate K2, is a radical departure from any used heretofore on projecting machines. It stands to reason that the take-up which is primarily designed to reel up 1.000 ft. of film cannot satisfactorily take up 2,000 or 3,000 ft. "We have designed a special take-up device to meet this situation. This take-up is similar to the belt-drive with the exception that we have designed a steel sprocket No. 691, Plate K2, iyi in. in diameter, which, combined with the use of the special Bell & Howell standard reels, with 5-in. hubs, as illustrated on Plate K2, equalize to a minimum the strain whicli would otherwise exist on the first 250 ft. when re-winding, and the last 250 ft. on the upper reel. This reel, when used in connection with tlie take-up driving sprocket, permits a slower speed than with the ordinary reel. In order to obviate the chance of straining the belt connector, we use a steel chain, which has proved far superior than a belt for driving large reels of this diameter. It is imported by us and is of the well-known Coventry manufacture. It is % in. wide and is guaranteed by the maker to withstand a breaking strain of 300 lbs. The blocks are hardened to eliminate wear and stretch, and the tension of the chain on sprocket 691 is adjusted by take-up chain adjust bracket No. 690, shown on Plate K2. The adjust-screw thimble spring and frictional discs are identical to those used with our regular take-up, as shown on Plate K and Kl, with the exception of the special cut steel sprocket. Keep these bulletins for future reference. They are invaluable to the operator. They illustrate graphically the reasons why the Simplex is the perfect projector. PLATE K2 IT IS ALL IN THE MAKING A PERFECT PROJECTOR GIVES PERFECT RESULTS