USRE14029E - schi odt - Google Patents

Description

T. v. scHlonT..

APPARATUS FORA THEEXTRACTIDN 0F`DUST FROM GARPETS AND OTHER ARTICLES. APPLICATTON FILED OCT. 20. T915.

' @issued Dec. 7,1915. 14,029.

2 SHEETS-SHEET l.v

'uMQM/QW l F. v'. scHl'onT. APPARATUS FUR THE EXTRACTION OF DUST FROM CAHPETS AND OTHER ARTICLE.

APPLICATION FILED 0CT.20. |915.

Reissue@ Dec. 7,1915.

MM MIM am/m annua? s ;ingsholm' All 3, Copenha vented -new 4and useful Improvements in or {BEDERIKWILHELM 'senioren or eornurtasnit' einnimmt, assumes, `:BY masias "issrcuisiniers, rol 'rameurs "sanitaire e." iixromme ce. vairismaar.'sx/iis, or

. cornnHaGnit-.nunnanm nain VILHELM er, a, Vsi of the King of Denmark, residing at hagen, Dani mark, '(whose postal address `Forhaalenhave in- Relating to Apparatus forftheEXtraetion of Dust from Carpets and other Articles, of vwhich the following is a specification.

My invention relates to apparatus for er;- tractiiig dust and other impurities from car pets, furniture and the .like and aims to'provide certain improvements-therein. As usually constructed, devicesv of this character comprise aV suitable suction pump or other airexhausting apparatus adapted to pro- '.du'ce a vacuum, vand a 4suitable mouth piece or'suction nozzle adapted to be passed over the'sur'face of the article to be cleaned, a flexible pipe being interposed between the suction nozzle and the pump. When the `dust-laden air is passed directly through .the pump, the valves and pistons of the lat- -terI .soon become leaky, partly on account of the wear caused by the dry dust, and

'partly on account of the accumulation'of 'dust in the cylinder and valves.

A Afurther result is that the dust adheres to the oiled .cylinder walls thus materially increasing 'the friction of the piston. To avoid these several disadvantages it has been proposed to interpose a filter or dust collectorbetween the suction mouth piece and the pump-iso that'the dust iS-efiltered out of the air before the latter reaches the pump, the dust being removed at intervals from the collector. vThis construction has, however, had the disadvantage that the accumulation of dirt in the filters or collectors has caused a considerable loss in the vacuum produced by the pump. As the eil'ective extraction of dust isentirely dependent upon the degree of vacuum which can' be obtained at the mouth piece, such construction has not been eiiicient in practice.

By my invention I avoid these yseveral disadvantages and obtain greater vacuum for a given expenditure o power than has heretofore been possible.

According to my invention I introduce into the apparatus a supply of water or p'a'ratus.

" 5' rnnarus ron frirnnirruacrron or naar ranura caiirn'rs aire-,frisuren .anamnesi zpeeication of Reissiiedetters Patent. I iDe-C.v "i, 1915.'

,B qiu, :lated May 2 1. 1907, Serial ."to. 255,71?. Application for reissue filed Getobei: 20,

isis; sealara-57,0%.

other fluid, the point at which sai-d supply is introduced being -sueli that the pump instean erecting upon the dryr dust-laden air, acts to pump the water and. air siufiultaneously. The eiiect of introducing 'the water, 5 e is to iorni the dust into a slime, which the ln order that my invention'may be more Clearly understood, l will proceed to de scribe the same. with reference to the ac coninanyiiig drawings, vin which- Figure l'is ay central vertical section of one construction of apparatus embodying my invention. Fig. 2 is a similar section showing another construction of suoli ap- Fig. 3 is similar section ofthe lower part of the apparatus of Fig. 2 illu"- trating a modification. Fig. l is a sectional view illustrating in somewhat diagrammaticform a complete suction. cleaning apparatus involving my invention.

Referring to Fig. 1,@ is ay chamber into which the dust-laden air isconveyed from the suction mouth piece through the usual flexible pine 0r hose, the latter being connected with an inlet b shown as formed at the upper partof said chamber a. The water or other fluid is introduced into the chamber a through a pine c preferably through a sprinkler. snrea ding nozzle or the like.

chamber/lu lis in communication with the lower part of the pump., which latter may be a so-called wet air pump that is to say, capale of taking water and air simultaneously.. ln the construction shown. e is a piston provided with a valve or valves, and f f are the inlet and outlet valves resuectivelv.- 0 is the discharge outlet of the pump and i, is a partition arranged at the lower part of the pump rendering it certain that the pump operates on both the air and water or other iuid at the saine time.

In operation the pump produces the necessarv vacuum. eiicientlv removing the air and dust. the latter being suspended in the The dust carried with -the air is thus .absorbed and mixed with the fluid at the bottom ofithe chamber a. The bottom of the into a-seWer for instance; or if it is desired into a filter, centrifugal machine or other purifying device, the purified liquid being returned to the pump.

It will be understood that a relatively large quantity of water should be introduced into the apparatus, so as to obtain a thorough sliming of the dust. Such quantity of Water, however, must not be so large as to reduce the efiiciency of the pump so far as its.

capability of pumping the air is concerned to such an extent as to break the vacuum. This might be done if the water was inadvertently .introduced so rapidly as to'maintain the pump chamber full, in which case the pump would act substantially entirely upon the water. It is essential, however, that the water be introduced in relatively large quantities so that after it has taken up the dust it will be in a sullioientlyliuid state to be easily acted upon by the pump. |The latter hence constitutes in e'ect a combined liquid and air pump which continuously ,or substantially continuously discharges the dust laden fluid and the dust free air from the apparatus.

By the device just described, as the dust is suspended inthe water or other liquid, the valves and piston vof the pump are not subjected to the excessive wear vincurred when the pump is acting Aupon the dry dust, and as such valves and piston are constantly Wet, they are easily maintained tight, which is diliicult in the case of a dry air pump. The vacuum produced by the present appa-` ratus is much higher than that produced by a dry air pump, partly because the valves and piston remain tight, and partly because in mydevice there is an absence of clearance behind the piston, Whichclearance is presn ent in the dry air pumps formerly used. Furthermore there are no accumulations of dust in the pump cylinder to interfere with the movements of the piston and valves. As compared with those systems' in which screens or lilters are used in advance of the pump, my invention showsa decided gain in eiliciency, principally because there is no loss of vacuum in advance of the pump, due to accumulations of dustin said filters. or screens.

rilhe fluid may be introduced into the apparatus through the pipe c,v either byv external pressure, or by the suction action of the vacuum in the chamber a.

Instead of utilizing a single mixing chamber, several such chambers may be employed in connection with a single pump, or vice versa. In the drawings the chamber a is shown immediately adjoining the pump, but it may be interposed at any other point in the conduit between the suction'mouth piece and the pump. By arranging the chamber in suitably close relation to the mouth piece,

renee and by s itably proportioning and inclin# ing the conduitfbetween the chamber and the pump, the set ling of dust i'n the conduit may be avoided, even though bends occur in the same.l The liquid may be introduced at any point in the apparatus so long as it acts to absorb the dust and permit its beingpumped out in suspension inthe water.

In Figs. 2 and l I have shown my invention as applied to an apparatus in which the mixing: chamber and pump areformed-as a. single device. In these'ligures the pump is of the diaphragm type having a relatively. large stroke. In this construction, i is the suction pipe,k the `suction valve, Z the pump chamber which also' serves as a Amixing space, m the diaphragm, a the pressure valve, o the pistonrod, p the discharge ope11- ing, and g the jet-pipe. During theupward '.1

movement of the pistonpair is drawn in.l

through the suction pipe 71,.; and liquid vthe top of said space, said valve acting dur.-

ing the downward stroke to permitthe air to' be driven out of the pump chamber so that the latter will be perfectly free of' clears ance. The annular valve 1v' may be replaced. by a number of small valves if desired, or

the gathering of the air in the pump chamber may be avoided by any other suitable means. In some instances it maybe desirable to omit the pressure valve n in the piston, although it is desirable to retain this in most cases as it softens the blow of the piston when the latter strikes the Water on itsdownward movement.

The outlet p is.

preferably placed suliiciently above the top of the 'valve 71 te. cause a submersion of the valve even when the diaphragm isiin its Y. lowest position. The suction pipe z' is preferably formed with a U-shaped bend iinmediately below the pump, so that the liquid leaking" through the suction Valve. 7c gather therein and be drawn up into'the pump again as soon as it fills the lower curvev f of the bend.

Instead of using a jet-pipe 7V, any other suitable means may be employed for introducingthe fluid. In 3 I have shown a construction in which the fluid is introduced through holes at or near the seat of the valve 7e so that the seat and valve are hit bv the jets and thus constantly rinsed. In this construction a continuous chamber t is pftviai wai-eh encircle fhtpmpfhaniber; water being I l I this result.

The liquid used may beuken dem 'any source-, such for' instance, as a water supplyu Aj pipe, 'or from a tank, from which'it may flow by gravity, orv be drawn up Vby suction vof the pump.- The. quantity of liquid takenl may be controlled by a valve orcock', and

may be adjusted according to the quantity;

of dust contained-in the air.

The air and liquid may be discharged,-

` that its outer end is at such level.-

Plv-

In Fig. 4 I have illustrated a complete apparatus for practising my invention, showing the connection of my devicefwith a suction nozzle. and a source of liquid supin accordance with FiguQ, 'w is a water tank 'connected with the water inlet, fl, w is a valve controlling the water supply, and y Vis asuction mouth piece of ordinary type connected to the inlet pipe a' by a flexible Lube or conduit e.

leads to a sewer, purier or the like. Similariconnectlons are used with the device shown in Fig. l. l

In the drawings I have shown by way 'of example, my invention as applying to single acting piston pumps, but it is evident that` double acting pumps of' any descriptionor other suction devices may heA employed in lieu of those shown.

Vhat I claim as my invention and desire to secure by Letters Patent is 1. In dustextractingapparatus, a suction mouthpiece, means for drawing dust 'and air therethrough, means for introducing substantially continuously into such apparatus a relatively large quantity of'liquid sulicient to slime the dust, but vinsullicient to break the vacuum, and means `for so conducting said air and liquid throughthe apparatus that they will be effectively commingled, said apparatus being adapted to effect a substantially continuous discharge of the dust laden liquid to remove the dust from the apparatus.

2. In dust extracting apparatus, a suction mouth-piece, a pump for drawing the dust and air therethrough, means for introducing.

substantially continuously into such apperatus a. relatively large quantity of liquid sullicient to slime the dust, but insuliicient to break the vacuum, vand means` for So conducting said air and liquid through the trpduced'finto such',felllzl'lbeif through an'open'mga: Any'other suitable 1 means. may be substituted for producing In this figure c.; is a pump constructed The pipe p is shown as connected with a suitable egress tube which vdrawing air and dust therethrough, a

partageait' they will ,be effectively ammingledsaidpumpbeingadapted. to effect a substantla'lly1 "cl1tim1ous' discharge of th'e- 'dust laden,- -to remove thedust from f i :3. 'In dustextraeting' apparatus, a suction mouthspiece', a pump 'fordrawingdust air, therethrough.' 'means for -introducing substantiallycontinuously' into Singh- ,appa-1;

ratusfin' adyanceof'the pump outlet a .rel a' tively.-largefquantity iof liquid sullieient to .slime the dust. fbut-ins'ucient to ,.flreak the vacuum, and means for-so conducting' said' airand' liduidthroiigh the pump that they-f will be,.'el'ectively vcoinmingled," said pump being adapted toefe'cta substantially con-J tinuous discharge of the 'du s t laden liquid to remove the dust from the apparatus 4. In dus'textracting apparatus, 'a suction` mouth-piece, a'pump for drawing air and dust therethrough', a mixing `chamber in adf Vance of the pump outlet, and means for introdu'cing substantially continuously into such 'chamber a relatively large quant-ity of liquid sufficient to slime the'dust, but insufflcient to break'V the vacuum, said chamber having means-for eilr'ectively com-mingling said air and liquid, said pump being adapted to effect a substantially continuous discharge ofthe dust laden liquid toremovethe dust from the apparatus.

5. In dust extracting apparatus, a suetidn,

mouth-piece, a reciprocating pump -f means for sprinkling liquid directly agains a valve seat of said pump whereby to rinse` the latter and to mix the dust with the liquid.

6. In dust extracting apparatus, AaA pump having va diaphragm, a chamber in' which mittingv the escape of'air :from the upper portion of said' v chamber adapted to open when such diaphragm is depressed whereby to eliminate the ellects of clearance:

7. In dust extracting apparatus, a pump having a diaphragm, inlet and outlet valves, a chamber between said valves, means forintroducing a liquid betwe n said valves to. absorb the dust passing t ough said pump,

and a special valve at the'top of said cham! ber to permit y'the escape of air Afrom the`11p-- per portion thereof so as to eliminate the clearance space'.

8.- In a dust extracting apparatus, a suction mouth piece, means for drawing dust and air therethrough, means for absorbing 'dust drawn into the apparatus a relatively large quantity of liquid in advance of the outlet of said dust and air drawing means, and means for so conducting said air and liquid through the apparatus that they the absonhedsdust'ltrom"theapparatus.

9,1.;Inydfust extractingapparatus, a suction mOu'thQpifece, means for drawingdust and a lvtir therethrough, means "for introducing substantially continuously into such 'apparatus lairelatively:largefquantty of liquid suffi- ',Y iev cient to 4,slime thedust,v but insufficient to vijbrealf:l the vacuu-rnandla chamber con- I structed to efectivelycommlngle the air and liquid 1n which saidl-fiuid-.and air are 1nn .=,.:ti 'oduced,l said-'chamber vhaving-an outlet,vr

anjdifthe` apparatusrbeing arranged to draw both'the liquid andai-r through said outlet. 10g Inj dust extracting apparatus, yapump fori ldrawing dust and air therethrough,

means for introducing substantially contin- Euf uou'sly into the apparatus a relatively large quantity of 'liquid suiicient toslime the dust carried-by said'ai-r into 'said pump, but insufficient to breakthe vacuum, such apparatus being adaptedftowmaintain a body of liquid Athrough which the air is compelled Ato rise before it is discharged by the pump,

"said pump having' means forsubstantially.

continuously discharging the dust laden liquid out of the apparatus.

y commingle'd, said Vappara-y dl effect a [continuous disi laden i 4liquid to remove il. In a dustl extracting apparatus, a pump yfor drawingv dust and airn therethrough, and means Jfor introducing substantially continuouslyinto the apparatus a relatively large quantity of liquid to absorb the dust drawn into the said apparatus, said apparatus being adapted to maintain a body of liquid through :which the air is compelled to pass and to effect a continuous discharge of the dust laden liquid to remove the absorbed dust from the apparatus.

12in a dust extracting apparatus, a

.pump for drawing dust and air therethrough, means for introducing liquid substantially continuously into the apparatus,

suchapparatus containing a chamber positioned to maintain a body of liquidr and having inlet and outlet ports arranged to compel the passage of the air through the body of liquid to absorb dust drawn into the apparatus before it is discharged by the pump,

suchl pump being adapted to effect a continuous discharge of the dust laden liquid to. remove the absorbed dust from the apparatus.

Signed at- Copenhagen, Denmark, this 30th day of September, 1915.

FREDERIK manina scinnr.

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