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Publication numberUS1468467 A
Publication typeGrant
Publication dateSep 18, 1923
Filing dateOct 31, 1921
Priority dateOct 31, 1921
Publication numberUS 1468467 A, US 1468467A, US-A-1468467, US1468467 A, US1468467A
InventorsFarnsworth William W
Original AssigneeFarnsworth William W
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Cleaning apparatus
US 1468467 A
Abstract  available in
Images(1)
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Claims  available in
Description  (OCR text may contain errors)

Sept. 18 1923. 1,468,467

w. w. FARNSWORTH CLEANING APPARATUS Filed Oct. 31. 1921 l I I Q llx'l rli"r llj L Patented Sept. 18, 1923.

WILLIAI w. FABNSWOBTH, OF CHICAGO, ILLINOIS.

CLEANING APPARATUS Application fled October 81, 1921. Serial Ho. 511,688.

To all whom it may camera:

Be it known that I, WILLIAM W. Farme- WORTH, a citizen of the United States, residingat Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Cleaning Apparatus, of which the following is a specification.

This invention cleaning apparatus relates to improvements in particularly adapted though not necessarily limited in its use for cleaning carpets, rugs, floors, etc., and one of the objects of the invention is to provide an improved, portable device of this character embed in a nozzle by means of the use of whic t e dirt and foreign matter will be dislodged from the surface and from within the body of the carpet by means of a pneumatic vibrator in the form of air currents operating in a direction substantially longitudinally of the length of the nozzle, and which air currents are applied to the surface for substantially the entire length of the nozzle.

A further object is to provide an improved nozzle having a narrow inlet slot and air receiving slots defining the lateral edges of the inlet slot and. receiving air from the atmosphere, the inlet, openings of the air slots being dis sed in such a ition with relation to ca other and to t e res ective slots that opposed air currents will aplied to the surface to be cleaned and adacent the inlet slot of the nozzle, whereby the. opposed air currents will come into contact with each other beneath the inlet slot of the nozzle to cause a swirlin motion of the air currents upon the sur ace of and within the body of the carpet for dislodging and rooting out the dirt and forei matter.

To the attainment of these en s and the accomplishment of other new and useful objects as will appear, the invention consists in the features of novelty in substantially the construction, combination and arrangement of the several parts, hereinafter more fully described and claimed and shownin the accompanying drawingiilludzrating this.

invention and in which- Fi re 1 is a view .partly in side elevation and partly in section and with parts broken awa a Figure 2 is a front elevation with parts broken away.

Figure 3 is a top plan view of a portion of the nozzle.

Figure 4 is a bottom view of the nozzle showing the direction of the air currents.

Referring more particularly to the drawin the numeral designates an air cir cu ation device of any desired construction but preferably is of the well-known fan type having a discharge outlet 11 and to which outlet opening is connected a bag or receptacle 12 for receivin the dust, dirt and foreign matter. All 0 these parts may be of the ordinary and wellknown construction.

The air circulation creating device is provided with an inlet opening 13 and a nozzle designated generally by the reference numeral 14, is connected with the apparatus by any suitable means and in such a manner that the inlet passage 15 of the nozzle will communicate with the inlet opening 13 of the casing of the air circulation creating device 10.

This passage 15 is-provided with an inlet opening 16 referably in the form of a narrow slot w ich extends lengthwise of and for substantially the entire length of the nozzle 14.

A portion of the nozzle adjacent the lower end thereof or the end which stands ad; went the surface to be cleaned is preferab y enlarged so as to form two passages 17 and 18 on opposite sides of the passage 15, the passage. 17 being provided with a discharge outlet opening 19 and the passage 18 is provided with a discharge outlet opening 20. The lower edges of the walls 21 and 22 of the inlet passage 15 of the nozzle 14 terminate short of the lower edges of the outer walls 2324 of the respective outlet 0 enings 19 and 20 so that when the edges 0 the walls 23 and 24 contact with the surface to be cleaned, the lower edges of the walls 21 and 22 will be spaced above such surface. With this arrangement the pile of the ca et Wlll be permitted to stand uprightly w 'le the lower edges of the walls 23 and 24 will depress the adjacent portions of the pile and thereby permit the air currents to be directed into the ile of the car at.

' The lower ed geS 25-26 0 the respective walls 21 an'd 22 may be of any desired width so as to form laterally extended surfaces above the pile of the carpet or surface to be cleaned for the purpose of holding the air currents against the surface. These surfaces 25 and 26 also serve as a means for causing the air currents to be compressed in a measure as they pass through the carpet beneath the surfaces 25 and 26, thereby insurin a full force .of operation against the sur ace and within the body of the carpet.

The inlet opening 27 of the passage 17 has communication with the atmosphere and this opening 27 is offset with respect to the outlet opening of the pass 15 1n a direction lengthwise of the nozz e and is preferably arranged adjacent one end of the nozzle, the upper wall 28 of the passage 17 inclining downwardly from the inlet opening 27 in a direction of and terminating adjacent the opposite end of the nozzle so that the air currents which are drawn in the opening 27 will be distributed substantially equal substantially throughout the entire length of the nozzle. The ofl'setting of the inlet opening 17 with respect to the passage 15 also serves as a means for causing the air currents which are admitted into the passage 17 to flow in a direction substantially lon itudinally of the length of the nozzle and will be delivered from the passage 17 through the outlet 19 beneath the surface 25 of the wall 21 with an abrupt change of direction of flow thereby causing a swirling action of the air against the surface.

The passage 18 arranged on the opposite side of the inlet opening 16 of the passage 17 is itself provided with an inlet 0 ning 29 similar to the inlet opening 27. T is inlet opening 29 is referably arranged adjacent the endof t e nozzle opposite to the end adjacent which the inlet openin 27 is arranged and the u per wall 30 of t e passage 18 is also inc ined downwardly from the inlet opening 29 to the end of the nozzle for the same purpose that the wall 18 of the passage 17 is inclined.

It will be manifest that the inlet openings 27 and 29 being offset with respect to each other and inasmuch as the upper walls 28 and 30 respectively of the passages 17 and 18 incline in directions opposite to each other, that air currents bein admitted into the passages 27 and 29 will dow inop osite directions throu h the passages. As t e air flows in from t e atmosphere through the inlet opening 29 into the passage 18 it will pass through the outlet 0 ning 2O beneath the surface 26 of the wal l 22 sage 15 and the inclined wall 30 will cause the incomin air currents to 0 rate upon the surface t roughout substantially the entire length of the nozzle.

The offsetting of the opening 29 of the passage 18 with respect to the outlet opening 15 of the nozzle will cause the air currents to change their direction of flow as they pass from beneath the surface 26 and thereby operate upon the surface with a swirling into the pasmovement in a manner similar to the operation of the air currents from the passage 17 upon the surface to be cleaned.

It will be manifest that the inlet openings 2729 are arra d adjacent op osite ends of the nozzle an on opposite si es of the outlet openin of the passage 15, and that the upper wa ls 28 and 30 respectively of the passages 17 and- 18 incline downwardly from the opposite ends of the nozzle and in opposite directions, so that the air currents entering the inlet openings 27-29 will flow in opposite directions, and as these air currents pass beneath the respective surfaces 2526 of the walls 2122 their course of flow will be abruptly changed as they enter the inlet 16 of the passage 15. Inasmuch as these incoming air currents are fiowin in opposite directions and as they are de ivered simultaneously lnto the inlet opening of the passage 15 they will clash or come in contact with car other in such a manner as to increase the swirling movement of the action of the air currents upon the surface beneath the inlet opening 16, and cause a violent agitation of the air currents upon the surface to be cleaned beneath the inlet opening 16, thereby operating as a pneumatic vibrator or a itator upon the surface being cleaned, wit the result that the air currents will root down into the body of the carpet and dislodge all dirt and foreign matter held therein.

The dust and dirt will then be caught up by the suction created in the passage 15 of the nozzle 14 and will be delivered into the inlet opening of the air circulation creating device 10 from whence they will be delivcred through the outlet opening 11 into the im urities collecting rece tacle or bag 12.

n the present exempli cation of this invention and as shown in the drawings two air assages are arran d one on each side of t e inlet openi 16 ut it is obvious that either one or the ot er of these passages may be omitted and the a paratus will operate efliciently with one 0 these assages.

-While the preferred form 0 the invention has been herein shown and described it is to be understood that various chan may be made in the details of construction and in the arrangement of the several parts, within the scope of the claims, without departing from the spirit of this invention.

What is claimed as new is 1. A cleanin apparatus nozzle rovided with a narrow mlet slot adapted to closed by the surface to be cleaned, said nozzle having a discharge outlet, an air passage in the nozzle having an inlet 0 ning adjacent one end of the nozzle, sai passage havin a continuous discharge narrow outlet 0 1 adjacent and extendin along the side 0 said slot, the upper we of the said i inclining downwardly from a point adjacent the inlet being constantly open thereof to a point in close proximity to the opposite end of the nozzle,the inlet of said passage opening to the outside air.

2. A cleaning apparatus nozzle provided with a narrow inlet slot adapted to be closed by the surface to be cleaned, said nozzle having a discharge outlet, an air passage in the nozzle having an ir inlet opening, said passage having a continuous discharge narrow outlet opening adjacent and extending along the side of said slot, the upper wall of the passage inclining downwardly from a point adjacent the inlet opening thereof to a point in roximity to the end'of the nozzle, the out et of said inlet slot and the inlet of said passage being offset from each other in directions lengthwise of the nozzle, the inlet of the said passage being constantly open to the atmosphere.

3. A cleaning apparatus nozzle provided with a narrow inlet slot adapted to be closed by the surface to be cleaned, said nozzle hav ing a discharge outlet, and means for supplying counter currents of outside air to the surface adjacent the said inlet slot, and in directions lengthwise of the said nozzle.

4. A cleaning apparatus nozzle rovided with a narrow inlet slot adapted to e closed by the surface to be cleaned, said nozzle having a discharge outlet, and means for supplying counter currents of fluid to the surface adjacent the said inlet slot, and in directions lengthwise of the said nozzle.

5. A cleaning apparatus nozzle provided with a narrow inlet slot adapted to be closed by the surface to be cleaned, said nozzle having a discharge outlet, and means for sup plying counter currents of outside air to the surface adjacent the said inlet slot, and in directions len hwise of the said nozzle, the said means em odyin'g air passages arranged adjacent the lateral edges of the said inlet slot, said passages havlng inlets individual thereto and open to the atmosphere.

6. A cleaning apparatus nozzle rovided with a narrow inlet slot adapted to he closed by the surface to be cleaned, said nozzle having a discharge outlet, and means for so plying counter currents of outside air to t e surface adjacent the said inlet slot, and in directions engthwise of the said nozzle the said means embodying alr passages arranged adjacent the lateral edges of the said inlet slot and being 0 n to the atmosphere, the inlets of the sai air passages being offset with respect to each other in directions lengthwise of the nozzle.

7. A cleaning apparatus nozzle provided with a narrow inlet slot adapted to be closed by the surface to be cleaned, said nozzle having a discharge outlet, and means for supplying counter currents of outside air to the surface adjacent the said inlet slot, the said means embodying air passa s arranged adjacent the lateral edges of t c said inlet slot and having inlets individual thereto and open to the atmosphere, the inlets of the said air passages and the said discharge outlet being ofi'set from each other in directions lengthwise of the nozzle.

8. A cleanin apparatus nozzle rovided with a narrow inlet slot adapted to e closed by the surface to be cleaned, said nozzle having a discharge outlet, and means for supplying oounter currents of atmospheric air to the surface adjacent the said inlet slot, the said means embodying air passages arranged adjaoent the lateral edges of the said inlet slot and being open to the atmosphere, said discharge outlet and the inlets of the said passages being offset from each other in directions len hwise of the nozzle, and the inlets of the said passages being also offset from each other in directions lengthwise of the nozzle.

9. A cleaning apparatus nozzle rovided with a narrow inlet slot adapted to he closed by the surface to be cleaned, said nozzle having a discharge outlet, an air passage in the nozzle and discharging on each side of and towards the inlet slot, each of the air passages having an inlet opening adjacent one end of the nozzle and open to the atmosphere, the upper walls of the respective air passages inclining downwardly from the respective inlets to the opposite ends of the nozzle and in opposite directions, the said inlets of the air passages being offset from each other and with respect to the said discharge outlet in directions lengthwise of the nozzle.

In testimony whereof I have signed my name to this specification on this 27th day of October, A. D. 1921.

WILLIAM W. FARNSWORTH.

Certificate of Correction.

It is horebieeqtified am in Leiters Patent No. 1,468,467, granted s'e tember 18, 1923, upon 1; e application of William W.,Farnsworth, of Chicago, llinois, for an improvement m 5 Cleaning Apparatus, errors ap ear in the printed Specification reqniringeormction as follows: Page 3, line 1,'c' aim l, for the words being constantly open. road opening, and line 4, for the word opening read being constant] open; and that the snid Letters Potent shouldrberead with these cordrogiona erein that theseme may .conform to the recogd of the case in the Patent ca. 1 T Signed 1nd healed this lfith dny of OctoBer, A. D., 1923. 0 [my] WM. A. KINNAM Acting of Patents.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6813807 *Oct 4, 2002Nov 9, 2004Reckitt Benckiser (Uk) LimitedVacuum cleaner having a secondary dirt and dust collection inlet
US7278181 *Feb 12, 2002Oct 9, 2007Dyson Technology LimitedVacuum cleaner with air bleed
DE202005018081U1 *Nov 19, 2005Apr 5, 2007Melitta Haushaltsprodukte Gmbh & Co. KgStaubsaugerdüse mit vertikaler Luftansaugung zur Verbesserung der Reinigungsleistung
EP0728434A1 *Sep 14, 1994Aug 28, 1996Hitachi, Ltd.Cleaner and cleaning method
WO1996001071A1 *Jul 4, 1995Jan 18, 1996Sandor PalffySuction nozzle, method of operating it and its use
Classifications
U.S. Classification15/421
International ClassificationA47L9/02
Cooperative ClassificationA47L9/02
European ClassificationA47L9/02