Clarke-gravely Corporation

Wilfred C Nise

Paul E Phillips

Bertel S Nelson

Dale E Lowder

Jack L Hommes

A compact floor polisher is disclosed including a base supporting an electric motor having a vertically oriented output shaft and driving a circular brush. The base includes a depending annular skirt and a hollow hub. A brush carrier has an annular flange and a spindle rotatably supported by bearings within the hub. The brush carrier and support base define a lubricant housing. A ring gear is formed on the annular flange of the carrier and engaged by a pinion gear secured to the motor output shaft. A seal is disposed between the vertical flange and the annular skirt. A breather passage is defined by the base and extends into the lubricant housing. Baffles direct lubricant into the hub to lubricate the bearings supporting the brush carrier spindle.

Floor polisher

The specification discloses a surface cleaning apparatus having a molded plastic housing and an upwardly and rearwardly projecting casing terminating at a handle, the lower portion of the housing including a forward suction nozzle, opening into a recovery chamber. Suction is generated by a blower at the rear of the recovery chamber and a shield positioned in front of the blower prevents liquid from being drawn from the recovery chamber into the blower. A pump removes liquid in the recovery chamber through a hose which empties into a remote drain. A parallel pump tubing causes recycle of liquid through the pump whenever liquid in the recovery chamber is depleted to prevent dry running of the pump. A set of spray nozzles located in the apparatus just behind the suction nozzle is connected through a hose to a faucet which acts as a remote source of clean water. The clean water supply tubing connects to the nozzles through a positive flow additive injector. The clean water supply tubing is also directly connected to the recovery tank through a bypass tubing so as to further aid in preventing dry operation of the pump and to cause additive flow even when source water pressure is low. The blower is shrouded so that air is evacuated downwardly from the blower into the surface being cleaned. A conveniently located handle switch is wired such that whenever clean water and additive are being sprayed onto the floor, the pump also operates. A separate switch enables one to run the pump only in the event the recovery tank gets too full.

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Spring Lake, MI, United States of America

Wilfred C Nise