Unidirectional control of electrical circuit breaker - employs lever with studs which must be removed and turned over after use to allow movement in second direction

摘要

Control of electrical equipment such as circuit breakers is performed by a removable hand lever with unidirectional effect. Provision is made to prevent two consecutive bidirectional operations. A control lever (1) which articulates about an axis (2) is operated by a hand control lever (3). This lever is removable and has two studs (4,5) which enable this lever to move the control lever to the end of its travel. If the hand lever direction is reversed the action is not transferred to the control lever thus providing unidirectional operation. The hand lever has to be removed and turned over before control action is possible.