Physical description

Instruction - 20 pages + brown covers, centre stapled, and two punched holes on left hand side, right hand side has rounded corners, titled "General Electric - Motor Driven Air-Compressors Instruction Book 84591B", dated June 1921. Includes instructions on GE Centre Gear Type self lubricating compressors, models CP25, 27, 28, 29, 30, 127, 128 and 130. Gives details of the parts, lubrication requirements, photos, drawings including connection diagrams. Last two pages includes notes on the Induction motor-driven air compressors CPT27, 28 and 30.



Has a list of company offices on the rear cover.