Birch, Stewart, Kolasch & Birch
Cord locking assembly for use with venetian blind
 A cord locking assembly mounted in the blind head box or the blind hand grip axially movably fitted on the hollow pole suspended from the blind head box. The assembly comprises a movable plug, a fixed plug hole sleeve for fitting engagement with the plug, a lock compression spring to bias the plug to the plug hole sleeve, lift cords passing through the plug hole sleeve, and means for loosening the lock compression spring. The means is the hand grip in the case of the assembly mounted the hand grip. The means is a knob or pull cord fixed to a holder in which the lock compression spring is mounted in the case the assembly mounted in the blind head box. The lift cords are fixedly locked between the plug and the plug hole sleeve when the means is not operated, are gradually movably locked between the plug and the plug hole sleeve when the means is operated at first to loosen the lock compression spring without moving the plug away from the plug hole sleeve, and released from the locking between the plug and the plug hole sleeve when the means is operated at last to move the plug away from the plug hole sleeve. 
Toso Co., Ltd.
Y E E
Y10T E06B E06B
additional inventional inventional
Kosuke Masahiro Toshiyuki Tadashi
Kawada Nagashima Mori Inaba