look at this odd rare cemetery lawnmower Kim found! A 1930s model LMC electric lawn mower by Louisville Electric Manufacturing Company.

I wonder why it was all aluminum? 

https://therealpicker.com/artdeco/art-deco-cast-aluminum-electric-lawn-mower?rq=lawn

https://www.ebth.com/items/6597099-1930s-partial-pioneer-lawn-mower

A design of Joesphus Miller of Louisville, Kentucky, USA.

 The machine was sold by the Louisville Electric Manufacturing Co under the name Pioneer. 

US patent 1,831,681 was applied for by Miller on 19th October 1928 and granted on 10th November 1931. 

The machine featured a horizontal cutting blade directly connected to a vertically mounted electric motor. The height of cut of the described lawnmower was adjusted by moving the entire motor/blade assembly up or down as required.