| http://www.w3.org/ns/prov#value | - shafts mounted to turn within the housing about spaced apart parallel axes, first means for pivotally connecting one end portion of said elongated member to either of said auxiliary shafts, and other means including an actuating link for pivotally connecting the opposite end-portion of said elongated member with said actuating shaftso that the elongated member 5 may be swung between said first an
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