INVENTS COMBINATION GLOBE AND ATLAS (Apr, 1930)
INVENTS COMBINATION GLOBE AND ATLAS
Globe and atlas are combined in the invention by a Los Angeles, Calif., map maker, of a model of the earth with a complete index and gazetteer inside it. Inserted in the globe are two small windows containing magnifying glasses. Inside is a mechanism that reels past this reading glass a fifty-one-foot paper tape bearing place names and descriptions arranged alphabetically.
On this three-inch-wide strip are indexed 43,000 geographical namesâ€” more than ten times the number that it would be possible to print on a globe of this size. With each place is given its latitude and longitude, so that it may be located accurately upon the globe. A gazetteer on the same strip supplements the index with information about the population, area, industries, and other facts of all nations, states, and principal cities. By turning the handle any portion of this information, printed in microscopic type, is brought beneath one of the magnifying windows for easy reading. Twenty-eight lines of type to each inch of strip make it possible to crowd 200,000 words of information into the entire roll.
A special printing press was invented to print the roll in a continuous strip. It can print upon an unbroken spool of paper three inches wide and nearly two miles long when extended.