Hello speedy
Whilst the magnets on the crankshaft was novel, many small engine
makers ran points from the crankcase - Briggs and Villiers surely did
on some models.

The points and condenser were isolated via a plunger and seal.
This gave quick access to the points and condenser.

Boundy's patent may be found here: -

https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/91200/re-boundy-patent-magneto-c1955.html

Also check out this memoir of production issues: -

https://www.outdoorking-forum.com.au/forum/u...tshire-boundy-the-bob-davies-memoir.html