Advance Machine Company

Everett E Johnson

Richard F Wulff

Cary W Armstrong

Patrick A Huttner

Apparatus (10) is disclosed including an interchangeable brush (88) and either a removable vacuum shoe (38) for soft floor surfaces or removable squeegee and carriage assemblies (56, 68) for hard floor surfaces. A spindle (32) is rotatably mounted in the chassis (18) and includes first and second arms (36, 52). The first arm (36) is attached to a sleeve (34) for removably and pivotally receiving a pivot pin (40) of the vacuum shoe (38). The second arm (52) includes an elongated slot (54) which slideably receives a follower pin (82) of a crank arm (80) of the carriage assembly (68). The spindle (32) is rotated by an integral lever (44) pivotally connected to a linkage (46) having its opposite end pivotally connected to a second, pivotable lever (26). A bracket (20) is pivotable with a handle (16) and abuts with the second lever (26) to support the chassis (18) by the vacuum shoe (38) or the roller (86) of the carriage assembly (68) such that the brush (88) is spaced from the floor surface when the handle (16) is in a transport position. The free end of a screw (30) threadably secured in the chassis (18) abuts with the second lever (26) when the handle (16) is in operating positions to adjust the height of the brush (88) relative to the floor surface.

Hard and soft floor surface cleaning apparatus

A mobile surface cleaning machine with rear mounted steerable wheels steered by a steering wheel, first and second squeegee blades pivotally mounted on each side, respectively, on the rear of the machine. A cam carried by the rear wheels with first and second levers pivotally mounted on the machine, each of the levers having a roller mounted thereon for contact with the cam. A first flexible cable connected to the first lever and the first squeegee and a second cable connected to the second lever and said second squeegee. A sprocket carried by the cam. A chain carried by said sprocket and the steering wheel whereby actuation of the steering wheel to turn the machine in one direction lowers one of said squeegees to a surface on which the machine is operated and maintains the other squeegee raised from the machine with both squeegees maintained in raised positions when the machine is steered in a forward direction.

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Waconia, MN, United States of America

Everett E Johnson