Contact breaker assembly with breaker arm spacer block

A breaker point assembly for a distributor of an ignition system for an internal combustion engine, said breaker point assembly being adapted to be adjustably mounted on a movable breaker mounting plate in said distributor, said breaker point assembly being secured in proximity to a cam of said distributor, said breaker point assembly having a cam follower resiliently urged toward said cam and having a breaker arm extending therefrom, the breaker arm terminating in a first breaker contact point, the cam follower being operable between said cam and said breaker arm so as to impart an oscillatory movement to the breaker arm thereby intermittently separating said first contact point from a second contact point coincident with a high point on said cam, the first contact point being electrically isolated from the second contact point;

• the improvement including a self-adjustable cam follower structure, the structure comprising:
• a spacing block mounted on said breaker arm, said spacing block including an arcuate cam abutment surface, the curvature of the arcuate abutment surface corresponding to an arc circumscribed by the cam and adapted to be resiliently urged against said cam;
• said breaker arm including a cam follower, said cam follower extending a predetermined distance from the arcuate abutment surface, said predetermined distance being proportional to a predetermined gap distance between said first and second contact points, the can follower thereby being adapted to resiliently urge said first contact point away from said second contact point said predetermined gap distance coincident with a high point on said cam, said cam follower being suspended between high points on said cam when said arcuate abutment surface of said spacing block is resiliently urged against said cam thereby permitting the first contact point to touch the second contact point.