Historical information

Electrostatic precipitation device? Spark generator?

Physical description

A black cast iron cylindrical vessel, with unmovable top flange/cover. A variable speed electric motor with vertical shaft mounted on three bronze curved brackets centrally over the vessel. Motor shaft connected with bakelite coupling to a shaft that passes through the black top cover. The cover flange has two pairs of electric terminals posts, a shorting link and two gas cocks, all relevant to the insdie cavity.