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Another Manufacturer Describes
His Newest Model
r
to be without the protection given by this reserve capacity.
“Contributing further to the efficiency of the C-70 arc control is a radically new duplex clutch (Fig. 3). With the positive carbon fed forward at an adjustable uniform rate, it is imperative that the negative carbon be fed forward precisely at a predetermined intermittent rate. Pawls and ratchets are generally unsatisfactory for this job, while single-friction clutches tend to operate erratically. Not only must
Fig. 4. Complete mechanical assembly (covers removed) oi C-70 lamp which is wholly outside oi and may be quickly detached irom housing (see Fig. 1). Burner element including arc stabilizer. also shown.
the negative carbon be fed forward precisely at predetermined intervals, but some means is necessary to positively lock the feed mechanism in position while the os
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V_^ONTiNUiNG OUR PRACTICE of presenting new product developments designed for improvement in screen performance to the followers of this Clinic, we have extended the courtesies of these columns to another manufacturer of motion picture projectors.
Blue Seal Cine Devices, Inc., producers of sound-on-film recording equipment since 1929, are the manufacturers of the new Superior Model “A” 35mm projector. The older Models “X” and “U” Superior projectors were manufactured by the Coxsackie Holding Corp., of Coxsackie, New York since 1922. At the beginning of the war they disposed of their plant and Blue Seal Cine Devices, Inc. purchased the patent rights and tools. J. Burgi Contner, president and chief engineer of Blue Seal redesigned the projector to the present Model “A,” retaining all of the salient features of the former models and modernizing them to contemporary design, embodying the more advanced scientific developments for modern-day projection. The complete projector is here illustrated.
And now we yield the column to Mr. J. Burgi Contner, aforementioned president and chief engineer of Blue Seal, who renders the following description of the modernized Blue Seal Superior projector:
“The exterior is attractively fin
ished in gray Morocco which matches other components necessary to assemble a complete projector. The film side (Fig. 1) is roomy, easy to clean and service. The alcrometer focusing large-size lens mount accommodates the new high-speed coater lenses without the use of adapters. The
(Continued on following page'
Two "Mint Marks” Bring Money to Your Box Office
• Two, tiny, colored dots on Super Cinephor lenses mean the finest in motion picture projection . . . better definition, contrast, more shadow detail, greater purity of color, and long-lived high efficiency . . . more box office appeal.
PURPLE DOT means that Super Cinephor lens surfaces have been Balcoted, which cuts to a minimum light loss due to reflection from air-to-glass surfaces, increases light transmission 30%.
YELLOW DOT means that Super Cinephor lens elements have been cemented by a special heat-resisting, permanently clear, synthetic thermosetting cement, perfected by B&L. This cement withstands the high heat of the arc without fracturing, blistering, or crystallizing.
BAUSC^^r LOME
W/
OPTICAL COMPANY
ROCHESTER 2, N. Y
BOXOmCE :: September 13, 1947
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