(under subclass 35) The signal device is rotated to signaling position by suitable mechanical means.
(1) Note. The distinction between rotatable and pivoted signaling devices is rather vague. Generally an arm or swinging device pivoted at its edge or end adapted to be swung to a single signaling position through an angle of not over ninety degrees is regarded as a pivoted signal, while a device journaled at both ends or between its ends or even at one end or edge and adapted to be rotated to either of two signaling positions, generally through an angle of one hundred and eighty degrees, is regarded as a rotatable signal.
SEE OR SEARCH THIS CLASS, SUBCLASS:
43, for window-exhibited sign or shutter, rotatable type.
