US1393695A

US1393695A - Vacuum-cleaner brush

Info

Publication number: US1393695A
Application number: US253698A
Authority: US
Inventors: George R Paulus
Original assignee: UNITED ELECTRIC Co
Current assignee: UNITED ELECTRIC Co
Priority date: 1918-09-12
Filing date: 1918-09-12
Publication date: 1921-10-11
Anticipated expiration: 1938-10-11

Description

G. R. PAULUS. VACUUM CLEANERBRUSH. APPLICATION FILED SEPT. 12. 1918.

1,393,695, 1 1 Patented ont. 11, 1921.

5.5 I jzvyzz/z lUNITI-:D s'TA'llEs PA'iENT OFFICE.

GEORGE It. PAULLUS, OF CANTON, OHIO, ASSIGNOR TO THE UNITED ELECTRIC GOM- PANY, 0F CANTON, OHIO, A CORPORATION OF OHIO.

VACUUM-CLEANER BRUSH.

Specification of Letters Patent.

Patented oct. 11, 1921.

Application led September 12, 1918. Serial No. 253,698.

`citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented certain new and useful Improvements in Vacuum-Cleaner Brushes, of which the following is a specification.

The invention relates to the suction shoe or nozzle chamber of a vacuum cleaner, and the object of the improvement is to provide a rotary brush'for taking up threads, ravelings, lint and other long.. light or fluffy materials, and to mount and 'operate the saine so as to efficiently perform its functions and to be readily and esaily lremoved and re placed forcleaning, repairing or renewlng.

In the use of vacuum cleaners, it is dlfficult to take up threads, long ravelings, and lint from the nap of body brussels or velvety rugs and carpets, for the reason that the;

strings ravelings and lint are so held by the liber of the nap that they cannot be removed by the suction of the machine.-

When a cleaning brush vis geared to and driven by a rotary fan or other vacuum pro-A ducing mechanism, it operates with a greater speed and more positive action than is necessary or desirable, and it is also driven solely in one direction; which excessive speed and positive action are injurious to the floor coverings.

The present improvement overcomes these difficulties by utilizing one of the casters of the machine as a traction wheel from which the brush is driven by a short resilient belt riding in a peripheral groove in the caster; and for ready and easy removal and replacement, the axial spindle of the brush is detachably mounted between an engaging bearing at one end and a spring bearing at the other end.

A preferred embodiment of the invention is illustrated inthe accompanying drawings forming part hereof, in which- Figure 1 is a'perspective view of the u n der side of a suction shoe showing the improved brush mounted therein;

Fig. 2, a longitudinal section showing the method of mounting the brush stem between 'its bearings; and

Fig. 3, a` fragmentary perspective View showing the method of engaging one endof the stem with its bearing.

Similar numerals refer to similar parts throughout the drawings.

The forward and rear Walls 1 and 1a of the suction shoe are usually connected or formed on the lower forward side of the fan case 2 of a portable electric machine, and the end walls 3 and 3al of the shoe are preferably extended rearward frorn the body of the shoe and are joined by rear walls 4 and 4 with adJacent side walls 5 and 5* to form bearings and housings for the casters 6 and 6a located at 'the rear of the ends of the shoe. The wall 5 1s preferably extended forward to constitute Vone end wall of the suction chamber? and the wall 5a preferably terminates at the rear wall 1f* of the shoe, so that the wall 3a forms the other end of the suction chamber.

The rotary tubular bearing 8 for one end of the tubular spindle 9 of the brush 10, is swiveledat its outer end upon the journal 11 formed by the stem of the screw 12 secured in the end wall 3 of the shoe. This bearing extends through Vthe aperture 13'in the wall 5 and is provided in Yitsinner end with the transverse. pin 14 adapted to engage With the notches 15 in the end of the brush spindle 9, which in turn is adapted to be entered neatly into the end of the tu-l bular bearing 8, as shown in Fig. 2.

The pivotal bearing 16 for the other end of the tubular spindle 9 of the brush 10 is slidably swiveled by its cylindric head 17 lin the stationary tubular bearing 18 secured 'ing 8, as described.

By this construction and arrangement, when it is desired to remove or replace the brush from its bearings, it is only necessary to move the tubular spindle of the brush longitudinally s o as to slide the pivotal bearing'l endwise in the stationary bearing 18, against the action of the spring 19, farv enough to disengage or engage the other end of the tubular spindle 9 with the rotary bearing` 8,-as the case may be; and when the brush spindle is engaged therewith,l it is evident that a turning of the rotary bearing will revolve thebrush upon the pivotal bearing 16 at the other end of the stem. y

The parts are so proportionedy and ar- A portion of the rotary bearing 8 opposite the caster 6 is diagonally serrated crosswise, so as to provide an adhering surface for the resilient cable or belt 205 and the periphery of the caster 6'is provided with the annular groove 2l in which said belt is adapted to operate for rotating the brush,-

without coming contact with the floor or v its coverings.

By this construction and arrangement, it is obvious that as the cleaning shoe of the machine is moved forward and rearward.

over the objective surface, the caster 6 serves as .a traction wheel to rotate the cleaning brush first one way and then the other; and that while the driving belt 20 1 normally drives the brush in one direction or another, it may yet slide or slip around the traction caster 6 to a sufficient extent to compensate for any stoppage there may be in the rotation of the brush, without intertering in any way withA the action of the vacuum creating mechanism. It is also evident that-by using a resilient material for the belt 20, its efficiency for driving the brush will be increased, although it is not intended to limit the scope of the invention to the use of a resilient belt.

claim:

l. In a vacuum cleaner suction shoe, screw plugs in the ends of the shoe, swveled bearings carried by the plugs, one of the bearings having spring cushioned endwise movement, and a brush having an axial spindle for detachable engagement with the swiveled bear- 40 ings by an endwise movement of the spring cushioned bearing.

2. In a vacuum cleaner suction'shoe, screw lugs in the ends of the shoe, swiveled bearlngscarried by the plugs, one of the bearings having spring cushioned endwise movement, a brush having an axial spindle for detachableengagement with the swiveled bearings by an endwise movement of the spring cash` ioned bearing and means applied to one of the bearings for rotatin the brush.

, v GEORE R. PAULUS.