Breaker point system

摘要

An ignition system breaker point assembly for an internal combustion engine to be mounted on the engine adjacent a rotating engine shaft is disclosed and includes an electrically insulating cam supported on the engine shaft for rotation therewith and an electrically insulating housing containing a movable contact member and a stationary contact member with a portion of the movable member extending from the housing toward the cam surface to be actuated by the cam for making and breaking electrical contact. The stationary contact may be adjusted from outside the housing for varying the breaker point gap and a spring may be included within the housing providing continuous electrical and mechanical contact with the movable contact member, urging that movable contact member toward the stationary contact member and the portion of the movable contact member which extends beyond the housing toward the cam. Desirably, the cam comprises an eccentric annulus of a self-lubricating electrically insulating material.