M IN ELECTRIC LAMP BULBS. opposite direction, terminat- A NOVEL PICTURE EXHIBITOR. ing in a coupling F. The coupling connects with the In order to prevent rain and moisture from enter- We illustrate herewith a toy picture exhibitor for tube extending integrally from the bulb in which the ing the… … the object of securing these patents, and on his re- operation is repeated as described above. A spring turn the details of the invention will be made public. A NOVEL PICTURE EXHIBITOR. catch which engages the hand wheel serves to firmly He has announced, however, that his perfected inven- hold the…
Patents · Spark · Radium · Feet · Speed · Power · Horse power · Motor · Loch long · Loch lomond · Scientific American · Sir william · Average speed · Radium salt · Spark terminals · Liquid air · Candle power
Internet Archive · Public domain (published before 1931). Free to use for anything.
