with screw mechanisms

Full Title

Man-operated mechanisms for operating wings, including those which also operate the fastening > for wings in general, e.g. fanlights > with screw mechanisms

Classification Context

Section:

FIXED CONSTRUCTIONS

Class:

LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES

Subclass:

DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING