PURPOSE: To lock/unlock a double sliding sash on the indoor side regardless of whether it exists on the right side or left side by fitting an operation lever rotated interlockingly with a pawl operation lever on the opposite side to the operation lever with a pawl of a butt stile and on the indoor side from a glass plate.
CONSTITUTION: A crescent L is fitted to a butt stile A. A pawl operation lever 4 and an operation lever 10 are fitted on both sides of the butt stile A. When the operation lever 10 is operated, the pawl operation lever 4 is rotated via a rotary shaft 8 and transmission means 5, 6, 7. When all the double sliding sashes on the indoor side are moved to the same side as the sash fitted with the crescent L, the pawl operation lever 4 is operated for locking or unlocking. When all the double sliding sashes on the indoor side are moved to the opposite side to the sash fitted with the crescent L, the operation lever 10 of the butt stile A is operated for locking or unlocking.
SATO MASATOSHI
SASAKI MICHIO
MATSUMOTO HIDEAKI
SHIN NIKKEI CO LTD