(under the class definition) Roll wherein the internal support for the working surface of the roll includes a tapering element and means enlargeable in circumference by the movement of such element relative thereto.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4+, for a roll expansible by fluid pressure.
42, for a roll the working surface of which is spring urged outwardly.
SEE OR SEARCH CLASS
15, Brushing, Scrubbing, and General Cleaning,
165, for a brush or broom which is collapsible for entrance through a narrow mouth of hollow ware and expansible after entrance and subclass 213 for a rotary wiper or polisher of like nature. 451, Abrading,
463+, and 504+ for an abrading tool under the class which is expansible.
