Method of manufacturing symbol indication drum

Details Method of manufacturing symbol indication drum Method of manufacturing symbol indication drum

1976-07-22

1977-08-09

Moon, Charlie T.

Metal working

Means to assemble or disassemble

Puller or pusher means, contained force multiplying operator

291484D, 29407, 29464, 235 1C, B21D 5326, B21K 128, B21K 142

Patent

active

040401600

ABSTRACT:
A drum formed on its outer peripheral surface with symbols and symbol position ascertaining marks. The symbols which, include characters, numerals, code marks and the like are superposed on the drum indirectly by affixing to the drum body a belt on which the symbols are positioned. For this purpose, the drum body is formed with a circumferentially aligned series of equalled spaced projections and the belt is formed with a longitudinally aligned series of perforations having a spacing equal to those of the projections. The drums can be used with any apparatus requiring symbol indication, e.g. time measuring instruments, gas meters, or calculators.

REFERENCES:
patent: 1100089 (1914-06-01), Ocumpaugh
patent: 1695663 (1928-12-01), Rodanet
patent: 2720681 (1955-10-01), Danielson et al.
patent: 3254600 (1966-06-01), Storm et al.
patent: 3380149 (1968-04-01), Holbrook
patent: 3440705 (1969-04-01), Johnson
patent: 3441998 (1969-05-01), Furst et al.
patent: 3763544 (1973-10-01), Gibson

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