Device in permanent waving

Details Device in permanent waving Device in permanent waving

1978-12-11

1980-03-25

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

132 9, G01B 508, G01B 500

Patent

active

041942949

ABSTRACT:
A device for selecting a curling rod of a specified diameter to provide a curl of selected size and configuration in permanent waving with a reducing medium of known composition, comprising a card which is provided with a horizontal tapered slot which has an enlargement beyond its widest end, a plurality of pairs of aligned vertical guide lines both above and below the slot, and in substantial alignment with each pair of guide lines a depiction of a curl showing its approximate size and configuration as obtained by the use of the curling rod of the measured diameter.

REFERENCES:
patent: 447475 (1891-03-01), Pomeroy
patent: 3858325 (1975-01-01), Goerler

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