US185865A

US185865A - Improvement in carpet-sweepers

Info

Publication number: US185865A
Authority: US
Publication date: 1877-01-02
Anticipated expiration: 1894-01-02

Description

G. W. D. MEDBURY.

CARPET-SWEEPER.

No.185,865 Patented Jan. 2, 1877.

INVENTUR N. PETERS PHOTD-LITMDGRAFHER. WASH'NGTON. D C

UNITED STATES PATENT OFFICE.

GEORGE W. D. MEDBURY, OF PROVIDENGE, RHODE ISLAND.

IMPROVEMENT IN CARPET-SWEEPERS.

specifieation forming part of Letters Patent No. 185.865, dated January 2, 1877 application filed June 13, 1876.

To all whom it may concew:

Be it known that I, GEORGE W. D. MED- BURY, of the city of Providence, county of Providence,'and State of Rhode Island, have invented new and useful Iup'rovements in Carpet-Sweepers; and I hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawiugs, forming part of this specifioation.

Figure 1 is a perspective view of one end of my improved carpet-sweeper, the top-being shown as open, and part ot' the box as broken away to show the driving-disk and the journal-bearing of the brush-cylinder. Fig. 2 is a cross-section of the oarpet-sweeper, showing the driviug-disk rougheued on its edge, and provided With internal cogged gear, as also the intermediate gear and the gear secured to the revolving brush-cylinder.

The iuventiou consists in the arraugenet of the driving-disk, provided with a scalloped or roughened edge, and with au internal oogged gear, by which motion is imparted through the stationary intermediate pinion to a pinion secured to the revolviug brush, and thus the driving-disk, when the carpet-sweeper is pushed over the carpet, imparts a rapid rotary motion to the brush.

Iu the drawings, Ais the box or case of the carpet-sweeper, provided with the dust-receivers and revolving brush. B is the revolving brush. G is the journal-hearing for the revolving brush. a is the driving-disk, arrauged to exteud below the box A sufficieut to insure contact with the carpet, and to prevent slippiug the edge of the disk a, is scalloped or otherwise roughened, so as to in'sure its rotation. The driviug-disk a is also pro vded with an internal cogged gear, by which the rotative motion is communicated to the pinion b, secured to the shaft of the revolving brush by means of the pinion c, which pinion revolves on a stud or piu projecting from the arm d, and is held in position by securing the arm d to the box A.

By this arrangemeut a positive motion is imparted to the revolving brush, which will revolve with three times the velocity with which the driving-disk revolves, and thus iusure a thorough brushiu g ot' the carpet.

When in a carpetsweeper the brush is driven by frictional contact, or by bands, such friction-gears and bands will soon wear, and the brush will not revolve with the required speed, the carpet will not be thoroughly cleaned, and the sweeper soon set aside as a useless machine.

In my improved carpetsweeper the brush is revolved by positive gears at a given speed, and these gears, being strong and not liable to slip, insure such speed in t'e revolviug brush as will thoroughly clean the carpet.

The driving inechanisu is not oostly, is simple in construction, not liable to slip, and can be replaced when worn at a small cost and with little labor.

Having thus described my inveutiou, I claim as new and desire to secure by Letters Patent- In a carpet-sweeper, the combination, with the revolving brush B, ot' the traction wheel or disk a loose on the shaft of the brush, and provided with the internal eogged gear, the pinion b, secured to the brush, and the intermediate pinion c, arranged to'inpart rotative motion to the brush, substantially as and for the purpose specified.

G. W. D. MEDBURY.

Witnesses:

J OSEPH A. MILLER, AMos A. WE'rE.