US962372A - Carpet-sweeper. - Google Patents

Description

G. MANTHEY; CARPET SWEEPER.

' -APPLIOATION FILED JUNE 15, 1909.

962,372, v Patented June 21,1910.

2 SHEETS-SHEET l.

Zjmnntoz MANTHEY. CARPET $WBEPER.

APPLIOATION FILED JUNE 15, 1909.

Patented June 21, 1910.

2 SHEETS-SHEET 2.

WIHIIIIJIH I anoentoz fimy flaw/26y STA KIN/FEE GEORGE MANTI-IEY, F SEATTLE, WASHINGTON, ASSIGNOR OF ONE-HALF TO JOHN N. WALLER, OF SEATTLE, WASHINGTON.

CARPET-SWEEPER.

Specification of Letters Patent.

Patented June 21, 1910.

To all whom it may concern:

Be it known that I, GEORGE MANTHEY, a citizen of the United States, residing at Seattle, in the county of King and State of \Vashington, have invented new and useful Improvements in Carpet-Sweepers, of which the following is a specification.

This invention relates to carpet sweepers, and has for its object to provide novel and convenient means for adjusting the rotary sweeping brush of a carpet sweeper to adapt the same for work on light and heavy carpets and also to lower the brush as it wears away, to render the brush effective at all times and enable the brush to be used to the full limit of its efliciency or until the bristles thereof are worn almost to the shaft or body of the sweeping roller.

WVith the above and other objects in view, the invention consists in the novel construction, combination and arrangement of parts as herein fully described, illustrated and claimed.

In the accompanying drawings :Figure 1 is a side elevation of a carpet sweeper showing the improvement applied thereto. Fig. 2 is a plan view of the same. Fig. 3 is a vertical transverse section through the frame of the sweeper, showing the sweeping roller in elevation and the end of the shaft thereof broken away in section. Fig. 4 is a vertical longitudinal section through the same. Fig. 5 is a detail perspective view of one of the adjustable bearings.

Referring to the drawings, 1 designates the frame of a carpet sweeper which may be of any usual or preferred construction, size and dimensions, the same being mounted upon a pair of axles 2 which are carried by the free ends of a pair of bowed springs 3 arranged at opposite sides of the center of the machine and adjacent to the sides of the frame, each of said springs being provided with a flat upper portion 4 which is permanently fastened to the under side of the top section of the frame as best illustrated in Fig. 4, while the opposite ends thereof are curved and extended inward to form spring arms 5 at the extremities of which are bearings 6 for the shafts 2. The shafts 2 are capable of moving with the ends of the spring arms 5 by providing the side walls or portions 7 of the frame with openings 8 considerably larger than the shafts 2.

Upon the outer ends of the shafts 2 and outside of the side frame pieces 7 0f the machine, there are carrying 'and driving wheels 9. Four of these wheels are employed, two at each side of the machine frame and said wheels are perferably pro vided with rubber treads or tires 10 which operate in frictional and driving contact with a pair of friction. heads 11 on the opposite ends of the shaft or body 12 of a centrally arranged rotary sweeping brush 13. The side frame pieces 7 are apertured or slotted from their lower edges upward a suitable distance as shown at 14 to allow for the up and down movement of the shaft 12 of the sweeping brush as best shown in Figs. 3 and 4, and at each end of the sweeping brush there is arranged a vertically adjustable bearing 15 embodying a central pintle 16 which is received in a corresponding socket in the actual center of the sweeping brush, the bearing also comprising an annular bearing flange 17 concentric with and surrounding pintle 16 and working in a corresponding recess in the adjacent end of the sweeping brush shaft or body. The bear-' ings 15 are further provided with outwardly projecting extensions or lugs 18 at the upper and lower ends thereof, the same being provided with threaded openings 19 through which passes an adjusting screw 20. Each of the adjusting screws 20 is fitted rotatably at its upper and lower ends in a pair of inwardly extending ears 21 on upwardly and downwardly extending arms 22 and 23 on a side yoke 24. The yokes 24 extend lengthwise of the frame and have their opposite ends extended inward as shown at 25 and secured to the front and rear of the frame of the sweeper as shown in Fig. 2. Each of the screws 20 is also provided at its upper end with a head 26.

From the foregoing descriptlon, it will be understood that by means of the adjusting screws 20, the sweeping brush may be adjusted up and down to correspond with the thickness and nature of the carpet being operated upon, also that the brush may be adjusted downward as the same wears away, thereby enabling the bristles of the brush to be utilized to the full extent and avoiding the necessity of frequent renewal of the sweeping brush. No matter what the position or adjustment of the sweeping brush may be, the spring arms 5 hold the carrying and traction wheels of the machine in close and frictional driving contact with the friction heads 11 of the sweeping brush, thereby insuring the effective operation of the machine at all times.

I claim l. A carpet sweeper embodying a machine frame, side yokes connected to the machine frame, adjusting screws journaled at or near both ends in spaced bearing lugs on said yokes, a rotary sweeping brush, and bearings at opposite ends of said brush having extensions threaded on the adjusting screws and movable between the bearing lugs on the yokes, whereby the brush may be adjusted up and down on the adjusting screws relatively to the machine frame by turning said screws.

2. A carpet sweeper comprising a machine frame, carrying wheels therefor, side yokes arranged at opposite sides of the machine frame and connected therewith, a vertically movable sweeping brush, adjusting screws GEORGE MANTHEY.

Witnesses:

W. F. ULRIcH, C. R. BEDDING.

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