Hi Ty,
From research I have found that although it is perfectly reasonable to assume the Lawn Cub and Scout came before the Lawn Patrol, it isn't correct. The earliest Boundy mower ad we have found so far is for the Lawn Patrol in September 1954.

The first mowers were JAP powered, as in the ad shown in your post. What I think may have happened is that when they introduced the new models with their own engine, in 1956 (though that date needs to be confirmed.) they were named Lawn Cub and Lawn Scout.
The Patrol name then dropped until some time later, when it was re-instated.

Boundy magnetos were a great idea. You simply unclipped a cover at the front of the engine and there was the coil and breaker points. The down side was it didn't work in practice. Loose crankpins were a problem because there was no usual flywheel magneto. The crankshaft, instead of having steel webs, had alloy discs which incorporated the magneto magnets. The discs had to be non magnetic. Constant hammering on the crankpin loosened them in the alloy discs, and the engine would fail.
This information was researched by Eric Schulz.
Here's an ad from 1956......
[Linked Image]

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin