(under subclass 37) Apparatus which includes means for grinding or cleaning the rotary tool during the operation of the machine.
SEE OR SEARCH CLASS
15, Brushing, Scrubbing, and General Cleaning,
246+, for cleaning devices within that class which are attached to the article or machine upon which they are to operate, and combinations of such articles or machines with the attachments when the article or machine is set forth in only insufficient detail to provide a setting for the attached cleaning device.
451, Abrading,
415+, particularly subclasses 419+ for an attachment for grinding part of a machine to which it is attached, and to the combination of a machine with such attachment when the structure of the machine to which it is attached is not significantly claimed.
