HELP! Vintage Jacobsen 3 wheel push mower

[BS67]

Had This Old Mower In Shed For Years And Got It Out Today And Sanded Points And Flywheel ,Pit Some Fresh Gas In And It Fired Right Up And Runs Good,Anyone Know What They Are Called And Their Purpose?Im Thinking Maybe For Mowing In A Graveyard Maybe ,Im Sure Someone On Here Would Know

 

[legdelimber]

I see a couple of web sites mentioning that machine "Trim-O" mower.
One page has a photo that you can still see the "Trim-O" name on the air shroud.

Been a while, but I recall people referring to any narrow cut mowers as "monument mowers" .

A couple of sites where people have/had one.
Unfortunately Looks like any links mentioned therein have gone dead though

You might also try searching by the Jacobsen and the blade length or cut width. 13" ?
You probably have already noticed that many folks will list the mower with the spelling of an "O" instead of the "E" in the name.

Auto-correct will try to swap in the letter "O", so watch out for that when you're searching.

https://www.smokstak.com/forum/threads/jacobsen-trim-o.129559/

https://www.mytractorforum.com/threads/jacobsen-trim-o.142268/