Journal of the Society of Motion Picture Engineers (1930-1949)

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668 LEVENSON December In this way a smooth interior was achieved as free as possible from corners. The screwheads were countersunk and covered with a rubber cement, and the internal corners of the cabinet were sealed and rounded with the same material. The small developer reservoir was constructed similarly to the cabinet. The circulation piping is llll^plgpipg Fig. 1 — Pilot spray cabinet and small reservoir. shown diagrammatically in Fig. 2. The developer was drawn from the reservoir at A and was sent, by the Ve-horsepower pump, into the three vertical manifolds B, C, and D. Each manifold supplied six spray tubes. The spray tubes fed by B and D sprayed horizontally inward, whereas the central spray tubes fed from C sprayed horizontally in both directions. In order to make proper use of the pumping