US449541A - Carpet-sweeper - Google Patents

Description

(No Model.) 2 sheets-v-sneen 1.

G. W. KELLEY. CARPET SWBBPER. No 449,541. Patented Marl, 1891.'

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CARPET SWEEPER.

N0. 449,541. Patented Mar. 31, 1891.

UNITED STATES PATENT OFFICE.

GEORGE w. KELLEY, or GosHEN, INDIANA.4

CARPETASWEEPER.

SPECIFICATION forming part of Letters Patent No. 449,541, dated March 31, 1891.

Application filed August 2, 1890. Serial No. 360,825. (No model.)

To all whom. it may concern:

Be it known that I, GEORGE W. KELLEY, a citizen of the United States, and a resident of Goshen, in the county of Elkhart and State of Indiana, have invented certain new and useful Improvements in Carpet-Sweepers; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which dit appertaius to make and use the same, reference being had to the vaccompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is an end view. Fig. 2 is a crosssection. Figs. 3 and 4 are sectional detail views, and Figs. 5 and 6 are detail views. Fig. 7 is a vertical section of the pulley and mandrel, showing the grooves and ribs. Fig. 8 is an end view of a modified form of one of the pulleys pressed between the drive-wheels, and Fig. 9 is a sectional View of the preferred pulley pressed in a similar m anncr. Fig. 10 is a perspective view of the mandrel and disk, partly in section; and Fig. 1l is a side view of the pulley between the disks.

Thisinvention has relation to carpet-sweepers; and it consists in the novel construction and combination of parts, as hereinafter set forth.

In the accompanying drawings, the letter A designates the sweeper-case, and B the brush seated in forked bearings C C at opposite ends of said case.

A' designates the pans, which 'are disposedou each side parallel with the brush B and are pivoted at each end to the inside of the case A. The pans are respectively pro-` vided at the ends with horizontal arms B', projecting through notches C in the lower edges of the case, to engage, respectively, the slotted bearings d' on angularlevers D' ,which are pivoted well to the rear, one to each pan, outside the case A. The levers D' are slotted at d' to engage the projecting ends of the arms B' of the pans, and they extend 'backward and slightly upward therefrom to their respective pivoted points Z, whence they extend forward and upward to project above the case in the form of a lug or end resto for the foot of the operator. The back flange of each dust-pan is connected to one end of a curved spring G, which is made fast at its opposite ends to the inside of the end of the sweeper-case, as shown. The point ot' connection ot' the spring to the back of the pan is above and back ot' the arm B' ot' the pan, so that the spring serves to lock the pan in either an open or closed position.

. The brush B is removable and is retained in the case by the elastic forked bearings O, made of wire, and secured to the slotted ends of the case to receive the journals Il of the brush. At the outerends of each of the brushjournals is secured an elastic or resilient friction-pulley or circular head N, which works between the drive-wheels I and by which the latter communicate motion to the brush. This pulley N, which I prefer to use in practice, consists of a broad circular rubber rim N', loosely mounted upon the brushshaft and of considerable thickness, having a central circular opening, said opening being broken at intervals by axial sockets or grooves u, said slots being engaged bycorresponding axial ribs or ridges when the said rim is sprung over the mandrel ai. The central opening of the rubber rim N' is of greater diameter than the 1nandrel,in order that when the pulley is pressed between the drive-wheels it shall have greater resiliency and be laterally compressible in all positions of the brushshaft, as shown in Figs. Sand 9. I may sometimes, however, dispense with the ribs .e and the grooves r and substitute a rubber rim with a plain opening of greater diameter than the mandrel, and, as in the case of the rim previously described, retained upon the said mandrel between the disks R', Fig. 11.

Another construction of the pulley, (shown in Figs. l and 8,) which accomplishes nearly the same result as those previously described, consists of a broad circular rim or band N", connected to the inside of a metal disk or face-piece R by means of pins or screws z', passing through radial slots z" of said disk, which allow lateral and vertical play of the rubber rim. The disks are permanently or otherwise secured to the journal ends of the brush-shaft.

The ends c' of the sweeper-case are slotted at c2 on each side of the brush-bearings, to receive the journals of the drivewheels,

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which, projecting inside the case through said slots, are riveted to angular or L-shapcd spring-hangers E', which are secured in each corner or angle of the sweeper-case and have a torsional action. That end of the springhanger E to which the journal of the drive wheel is riveted has an elastic vertical 1novement communicated by the drive wheel, through the action of its journal in the slot at the end of the sweeper-case, 'when pressure is brought to bear upon the sweeper to bring,r the brush and case closer to the carpet-surface, The other end of each spring-hanger is snitably attached to the inside wall of the case. S S indicate bands or guards extending `from the front at each end of the sweeper-case around to the sides T thereof, Where rnortised seats g are provided for their ends, respectively. A set-screw 7a projects through each side ot the case to engage each spring-hanger, for the purpose of forcing the ;lri\'e-\\f'heels riveted to the free ends thereof against their respective brush-pulleys when, by reason of peripheral wear of said wheels and pulleys, such adjustment is rendered necessary. lVhat I claim as my invention is l. In a carpet-sweeper, the combination, with the brush-shaft; and driving-wheels, of the resilient pulley, said pulley consisting of the elastic rim loosely mounted on the mandrel or shaft of the brush and secured thereon by disks or plates on said mandrel, substantially as described.

2. In a carpet-sweeper, the frietional pulley at the ends of the brush-shai`t, comprising a Ce1'1trally-perforated rubber band having internal axial grooves or sockets adapted to engage between disks, corresponding ribs, or ridges of the mandrel, substantially as described.

In testimony whereof I ailix my signature in presence of two Witnesses.

GEORGE lV. KELLEY.

Witnesses:

E. E. lllmmminfr, G. L. Thurn.

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