Catalog of stereopticons, motion picture machines, projection apparatus : manufactured and imported by the McIntosh Stereopticon Company . y arecontained inside of the reel and can quickly be replaced by any one withoutthe necessity of making wire connectit)ns. Tlie signal lamp is protected fromdanger of breakage by being enclosed in a perforated metal cap, which isa continuation of the tube which forms the center of the reel and containsthe battery. The lamp and battery revolve with the reel so that rubbingspring contacts between a stationary battery and a revolving spool (used irithe old sty
Catalog of stereopticons, motion picture machines, projection apparatus : manufactured and imported by the McIntosh Stereopticon Company . y arecontained inside of the reel and can quickly be replaced by any one withoutthe necessity of making wire connectit)ns. Tlie signal lamp is protected fromdanger of breakage by being enclosed in a perforated metal cap, which isa continuation of the tube which forms the center of the reel and containsthe battery. The lamp and battery revolve with the reel so that rubbingspring contacts between a stationary battery and a revolving spool (used irithe old style signal) are unnecessary, thereby eliminating the trouble causedby poor electrical contact. A noiseless means of communication beiween the lecturer and the lan-tern operator to indicate when the next slide is wanted is a great conveni-ence to both lecturer and operator. Every pressure of the button held inthe lecturers hand produces a slight flasii of ligiit in tlie lamp near theoperator. Our new electric signal is the most compact and the best on thsmarket. 70 MiIXT(:»SH STKRKOrTICON CO., CHICAGO, , U. S. A. SLIDE Imperial, for Dissolving Lantern For both English and American shdes. Price, $ .3c
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Keywords: ., bookcentury1900, bookdecade1910, bookidgricatalogof, bookyear1915
