US229174A - Carpet-sweeper - Google Patents

Description

T. S. PAGE. -Oarpet-SWeeper.

No.- 229,174. Patented June 22,1880.

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THOMAS S. PAGE, OF CHICAGO, ILLINOIS.

CARPET-SWEEPER.

SPECIFICATION forming part of Letters Patent No. 229,174, dated June 22, 1880.

Application filed December 27, 1879.

To all whom it may concern:

Be it known that I, THOMAS S. PAGE, of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Carpet-Sweepers, of which the following is a specification.

This invention relates mainly to the construction of the parts which hold the rotating brush of carpet-sweepers; and its nature will fully appear from the following description and the accompanying drawings, in which- Figure l is an outside perspective view of my improved carpet-sweeper; Fig. 2, a crosssection of the same; Fig. 3, a horizontal section upon the plane of the brush-spindle; Fig. 4, a detail view of the slotted segment whereto the swinging arms in which the brush pivots are journaled, and Fig. 5 a detail View of one of said swinging arms.

Like letters of reference made use of in the several figures indicate like parts wherever used.

In said drawings, A represents the case or box of the sweeper, having the usual handle A and hinged cover a. B B are the'rollers, with pivots b I) inserted in the ends of the case.

0 is the rotating brush, to the ends of the spindles whereof are applied rubber or other good friction-producin g surfaces 0, which come in contact with the rollers, and thereby cause the friction which operates the brush. These friction-surfaces c are not both absolutely necessary, as sufficient friction to insure rotation of the brush may be obtained from one of the rollers; but I prefer to employ the power at both ends, because thereby the rotation is not affected by the temporary breaking of contact between one of the rollers and the brush-spindle, which may sometimes happen with my construction.

The pivots cl of the brush are journaled in open-mouthed slots 6 in swinging arms E. These arms swingon pivots f upon the segments F, of which there is one at either end, and which are secured to the case by screws f. These segments are slotted at f, and through such slot is passed a screw, f which is driven in so as to hold the segment in any position to which it may be adjusted within the range of movement permitted by the slot. ()fcourse the adjustment may be changed as often as necessary. These segments are located outside the case, as preferred; but it is desirable that the pivots of the arms E should in every case be located above the axis of the rollers, because thereby it becomes feasible to lower the brush as its bristles wear off without impairing the friction-gripe upon the rollers, the location of the contact alone being changed. The arms E being thus pivoted at one end, the other ends are free to rise and fall, and of course they and the brush which they carry obey natural laws and fall by their gravity, thus exerting pressure through the brush upon the surfaces of the rollers. I find that the pressure thus exerted is sufficient to cause the rotation of the brush under ordinary circumstances; but if insufficient it maybe increased by springs or added weight.

In order that the arms may not be thrown out of place, I limit their movement by providing them with an upward extension, 6, and attach .thereto a spring, 6 which is secured at one end to the case. This spring may be sotensioned as to resist the upward movement of the arm merely, or so it may exert a pull upon the arm, which will increase the pressure upon the roller, as above suggested.

My purpose in thus suspending the brush in yielding bearings is to permit the brush to accommodate itself to the surface being swept.

Inequalities in the floor, when they are such L as to overcome the resistance offered by the bristles, tend to injure the brush where it is rigidly held by stationary bearings by bendin g down the bristles, and even if the brush in that construction continues its rotation while passing over uneven places it is ineffective, because the bristles are bent down by the raised portions of the carpet and cannot work. In my construction the yield permitted to the brush obviates in great measure the bending of the bristles.

My construction enables me to greatly simplify the sweeper and reduce the number of moving parts. It is thus much cheapened and rendered more durable and less likely to become disorganized.

I employ open slots for the bearings of the brush, because that greatly facilitates insertion and removal of the brush. A further feature, tending to facilitate the same operation brush, a roller at each end operating the brush by frictional contact therewith, and swinging arms attached to the box by adjustable pivots 15 and affording bearin gs for the brush, said arms being depressed by gravity or spring force, or both, to keep constant the contact between rollers and brush, substantially as specified.

THOMAS S. PAGE.

Witnesses Enw. S. EVAR'IS, JOHN W. MUNDAY.

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