Kohler 1000 watt 110V DC, 3 Hp, 480+ Lb "light plant". This one built in 1926 had such features as an automatic switch which cranked the engine engine when a light or appliance in the house was turned on. It also featured a Stewart Warner vacuum fuel pump. At present it is dissassembled and a good number of the parts have been cleaned and primed. It gets a little attention now and then.
The Antique Light Plants site