Here is a clear glass New Type Edison Lamp with his famous "anchored" two loop oval carbon filament. At that time, this Edison carbon lamp of the 1890's was the most profitable production lamp among all his rivals. Its filament was made by squirting a liquid cellulose solution through a tiny hole in an extruding die. The resulting thin strand of cellulose thread was then directed into an alcohol setting bath. The fine cellulose "carbon" thread was thus treated, then shaped and carbonized before it was mounted on its stem and placed in the lamp globe as an incandescing filament. At that time in history this Edison process was a major breakthrough in light bulb production because, not only was it more efficient, but it was also a process which lent itself well to mass production techniques for the manufacture of incandescent lamps. Up to that time the tedious job of creating large quantities of filaments was labor intensive hand work and very expensive. Lamps of this double oval anchored design were first commercialized by Edison circa 1893 and enjoyed the greatest filament design longevity. This squirted , treated cellulose filament was licensed and used right up to the end of the vacuum "tipped" lamp era, which did not end until after the "Great Depression" of 1929. This Edison lamp exhibit also has platinum lead wires and a rolled brass collared Edison screw base, secured with plaster of Paris. It is 16 candlepower, has a 2.35 inch diameter globe and is 5.25 inches tall. This lamp is a highly collectable item from the second decade of early electric incandescent lighting history.