Title: Mobile floor sweeper

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Claims: I claim:

1. In a floor sweeper having a rotatable cylindrical brush mounted on a mobile chassis, a receiver for receiving debris delivered from said brush, means for raising and lowering said brush, a plate adjacent said brush for the direction of debris, the improvement in said plate said improvement including

a. plate means carried by said sweeper and adjacent said brush, and

b. means for moving said plate means relative to said brush as said brush is moved relative to said chassis whereby the plate means maintains the same position relative to the brush,

said means for moving said plate means including link means connected to said plate means and said means for raising and lowering said brush whereby the plate means automatically moves relative to the brush when the brush is raised and lowered.

2. The device of claim 1 in which said plate means includes a flat plate.

3. The device of claim 2 in which said plate is pivotally mounted on the edge on the chassis.

4. In a floor sweeper having a rotatable cylindrical brush mounted on a mobile chassis comprising in combination:

a. means for raising and lowering said brush relative to the chassis,

b. plate means,

c. means pivotally mounting said plate means on said chassis, adjacent said brush,

d. lever means connecting said plate means with said means for raising and lowering said brush whereby the plate means follows the brush as it is raised and lowered, and

f. means for adjustably positioning one end of said brush relative to the chassis.

5. The device of claim 4 in which said plate means includes a single flat plate.

6. In a floor sweeper having a rotatable cylindrical brush mounted on a mobile chassis, lever and rod means for raising and lowering said brush, means associated with said lever and rod means for adjustably moving one end portion of said brush relative to the other end, the improvement in said associated means, said improvement including

a. said means associated with said lever and rod means including first and second rod members in axial alignment and carried by said mobile chassis,

b. a second arm rigidly secured to said second rod means at the inner end,

c. said second rod rigidly secured at the outer end to

d. a second bar connected to said brush,

e. a first arm rigidly secured to said first rod means at the inner end,

f. said first rod rigidly secured at the outer end to,

g. a first bar connected to said brush,

h. means for changing the relative positions of said second and first arms to cause the end portion of said brush connected to said first bar to move relative to the chassis.

7. The device of claim 6 in which said means for changing the relative positions of said second and first arms includes

a. a screw member mounted on said first arm in engagement with

b. an extension bar on said second arm.

Other info:

Inventors: Wulff, Richard F. (Long Lake, MN, US)

Application Number: 499143
Filing Date: 1974-08-21
Publication_date: 1976-01-06
Assignee: Advance Machine Company (Spring Park, MN)
Primary Class(es): 15/83
Other Classes:
US Patent Ref:

1042860	Oct, 1912	Whittome	15/83.
1537003	May, 1925	Bryant	15/83.
2913744	Nov, 1959	Gregersen	15/83.

Other Refs:
Primary Examiner: Roberts, Edward L.
Assistant Examiner:
Attorney: Wicks & Nemer