US1907370A - Vacuum cleaner - Google Patents

Description

y 2, 3 w. SCHOELLER 1,907,370

' VACUUM CLEANER Filed Oct. 50, 1931 2 Sheets-Sheet 1 I/V VEIVY'UR.

Will/7182771, SchoeZZer y 2, 1933. w. SCHOELLER 1,907,370

VACUUM CLEANER Filed Oct. 30, 19:51 2 Sheets-Sheet 2 Ill/VE/l/TOR.

Patented May 2, 1933 um'rao STATES PATENT OFFICE wmnnmr SGHOELLER, or 13mm, 01mm? vacuum manna Application filed October 80, 1931, Serial No. 572,1 73,and in Germany-October 30, 1930.

An object of the present invention is to remedy a defect attaching to many vacuum cleaners, namely, their inability to pick up hairs, threads, flufi and the like, which adhere firmly to the carpet and cannot be removed, except very imperfectly if at all, even by the brushes provided on the nozzles of the cleaner.

v The invention provides a hairand threadgathering nozzle which can be set on the tubular guide rod of any type of vacuum cleaner and manipulated in precisely the same manner as in the case of carpet sweepers. A gentle reciprocating movement,

without any pressure, over any kind of carpet will suflice to loosen the impurities, er -n when firmly trodden in, so that they will infallibly be carried off by the vacuum current.

Typical embodiments of the invention are illustrated in the accompanying drawings.

Fig. 1 is a side elevation of the nozzle."

Fig. 2 is a view of the underside of the nozzle. L

Fig; 3 is a view of the under side of a modified form. V.

Figs. 4 and 5 are cross sectional views corresponding to Figs. 2 and 3 respectively.

Figs. 6,7 and 8 illustrate ways of attaching the nozzle to a vacuum cleaner.

a denotes a connectingsocket adapted to slip on to the tubular guide rod .of any vacuum cleaner with the aid, if necessary, of an adaptor or a reducin piece. '6 is a wood posed airpassages 0 alternate with strips (1 of non-felting material, such as crepe rubber, the same being arranged between the 4o lateral terminal pads e. The stripsd either I extend over the suction aperture (1', as shown in Fig. 2, or are cut away on either side of the constricted transverse suctionv aperture (1, as shown in Fig. 3. w

The effect of'the reduced cross section is to increase the velocity of the air at the suction aperture, with the result that the hairs,

or metal slider, in whichlongitudinally disthe nozzle produces in a novel manner the same eifect as apparatus provided with heaters.

According to F i s. 6, 7 and 8 the bore of the connecting soc et a tapers outwards so that either (Fig. 6) the tubular guide rod B of certainknown vacuum cleaners .will fit directly, or (Fig. 7) a biconical adaptor or reducingpiece f, g can be inserted for attachment to another design of tubular guide rod B, or finally (Fig.8) a sleeve h tapering at one end and flared at the other can be inserted to accommodate a'close-fitting end of a different pattern of tubular guide rod .threads and the like adhering to the carpet and loosened by the crepe rubber during the to and fro movement, are infallibly carried away by the suction current. In this way B In this way, the-sam e nozzle is applicable to all the usual" commercial types of vacuum cleaner.

Iclaim:-' i I t In a vacuum cleaner, a nozzle having a suct-ion slot extending vtherethrough, sliding pads disposed late-rallyof said nozzle at right angles to the suction slot thereof, strips "of non-felting material arranged in spaced relation between said pads providing a plurality of paralleling passages at right angles to the suction slot and interrupting the latter, the working surfaces of said strips being at a slightly lesser distance from the nozzle than the working surfaces of said pads. II; witness whereof I have hereunto set my han WILHELM SGHQELLER.

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