US1835770A - Mechanism for collecting dust - Google Patents

Description

` Dec. 8,;1931. P. GASNERTAL 1,835,770

-MIEICHANISM FOR COLLECTING DUSTv Filed Dec. 1, 192-8 UNITED STATES PATENT OFFICE 111111.11 GAsNEa AND sIenUND GAsNna, or BROOKLYN, NEW Yoan. AssTeNons To MANaosn MERGANTILE co. INe., or NEW Yoan, N. Y., A coaroaArroN or NEW YORK MEcnAN-isu ron coLLEc'r'TNG nuarl Application led December 1, 1928. Serial No. 323,114.

`5 can be readily applied to any existing type of vacuum cleaner, and by means of which the dust and dirt can be collected in a receptacle Which/can be conveniently separated from the vacuum cleaner, so as to eliminate the necessity of dumping the dust and dirt out of the cloth filter bag which is now ordinarily employed for'this purpose.

Another object of our invention is to provide a vacuum cleaner attachment which will make it lpossible to use a receptacle for the dust which can be made of fragile material such as paper, without the necessity of supporting the fragile paper by means of fabric or the like.

Another object of our invention is to provide a vacuum cleaner attachment in which it shall be possible to use a receptacle for the dirt which can be made of celluloid, waxed paper, or`other non-porous and translucent or transparent material. receptacles made ofl glass, rubber, metal, or any other material.

Another object of our invention is to provide an improved dust collecting receptacle tachment, by means of which the resistance to the passage of air out of thedevice will be lowered so that the vacuum lcleaner can exert a. greater suction and can have greater eiiciency.

Other objects of our invention will be set forth in the following description and drawings which illustrate a preferred embodimentthereof, it being understood that the above general statement of the objects of our inventlon is intended merely to generally explain the same and not to limit it in any manner.

Fig. 1 is an elevation of the essential part of the vacuum cleanerattachment,

Fig. 2 is a sectional view on the line 2--2 of Flg. 1.

Fig. 3 is a perspective view showing the device in position. Y

We can also -use t suitably combined with a vacuum cleaner at The vacuum cleaner V may be of any suitable type. The standard type of vacuum cleaner comprises a metal housing having a nozzle N, a motor M, and an outlet nozzle O.

It is now customary to connect a bag made of porous fabric to this outlet nozzle. This.

bag permits the air to escape therefrom, but retainsthe dust. It has also been roposed to place a paper bag within said fabric bag, said paper bag being also connected to the outlet nozzle, in order to collect the dust in a paper bag which is readily removable.

However, in this construction it was necessary to firmly support the wall of the relatively fragile paper bag, by the wall of the cloth bag.

According to our invention, it is not necessary to locate the paper bag within any other receptacle, although this can be done without departing from our invention. However, if the paper bag is enclosed in a cloth bag or other receptacle, it is not necessaryto sup ort the wall of the paper bag by the wall o the cloth bag, or other receptacle.

A hose 1 is provided with a coupling member2a by means of which it can be coupled to the outletnozzle O of the cleaner. This hose 1 comprises an outer wall 2 made of a suitable fabric, and an inner lining 3. This inner lining 3 is not uniform throughout the length of the hose 1. Said lining is substantially air-tight up to about the point A of the hose 1. For example, said lining can be made -v of. rubber or relatively tightly-woven fabric up to about the point A. The lining is made o relatively porous material in the lateral leg thereof and up to the'coupling member 4. The object of this is to permit the air to escape sufficiently from the upper part of the hose 1. The top of the hose is provided with an ordinary clamp- 5, having a hook which can be connected to the handle of the vacuum.

cleaner. However, it is not necessary that the withoutr anysubstantialescape of air, so asA impermeable material. If a celluloid recepy v tacle is used, it can be provided with a valvefor removingthe dust therefrom, and if desired, a receptaclemade of impermeable material such as Celluloid or the like, could have a. panel or part made of porous cloth .or the like. Since, the air escapes between the point l f A and the mouth ofthe bag, it is clear that the air escapes from the connecting means 1n a portion of sald connectlng' means whJ ch e is non-aligned with the axis ,of the receptacle.

- For example, and as shown in Fig. 3, the

axis ofthe receptacle B is substantially vertical. Likewise, it may be considered that the air escapes to some extent from the Vupper'part of the vertical leg of the connectlng means (namely, the hose 1), and that 'the 'air valso escapes from the lateral branch of the connecting means, said lateral branch being directly connected to the receptacle B. The axis of the lateral branch may be' considered as being substantial# ly horizontal, so that this is non-aligned with the axis of the receptacle, and the axis ofthe top partof the vertical branch of the hose- 1 `namely, above the point A), is also out of a ignment'with the axis of said receptacle B. The axis of the vertical le of the connecting means is substantially de ed by the arrow X shownlin Fig.f3, the axis of the lateral branch of theconnecting means is substantially defined by the arrow Y, and `Vthe axis of the receptacle B is substantially delined by the arrow Z.

We prefer that the coupling provided by the member should not be absolutely airtight softhatthe air can escape to a limited extent from the top of the rece tacle B. The

operation of our device is as ollows If the hose or connecting member 1 was absolutely air-tight, then the air pressure created by the blower of the vacuum cleaner would burst areceptacle made of relatively fragile material such as paper. However, by permittingsuflicient air to escape from the `upper part of the connecting hose, a fra 'he e air has sufficient velocity when it reaches the point A to carry the dust around it, and to ,throw the same into the receptacle even "though the air escapes from the lateral leg of the connecting member. Experience has shown that substantially all of the dust is collected in the receptacle B. If an impermeable collecting receptacle is used, then the slight escape of air at -thetop portion thereof l enables the air current to throw the dust into the collecting receptacle B. It is not absolutely necessary to have a slight leak in the coupling between the dustcollecting receptacle and the connecting member 1, although this is preferable. It will be noted that a substantial part of the air escapes in the lirst part or leg of the device while the air is not moving in the direction'ofthe collecting receptacle.

. Generally speaking, `our invention covers any device whereby the air current is forced into a dust collecting receptacle connected to the outlet nozzle of the vacuum cleaner by means of an intermediate connecting member, enou h air being allowed to leak out of the attac ment or out of the receptacle to enable ,itheldust to enter and to remain in the recepac e.

It will be noted that the air and dust move continuously in a current which follows 'the Wall of the connecting means, so that the dust is deposited into the receptacle, without the necessity of forming al counter current. On

the contrary, in prior devices such as shown in .V S. Patent No. 1,514,87 5, dated Novemb er 11, 1924, the air current Was effective to force the dust into the receptacle, only if a counter current 'was formed in the air curdeparting from the spirit of our invention.

We claim:

1. In a vacuum`cleaner )having an outlet nozzle and a dust collecting receptacle, con-v necting means intermediate'said receptacle and said outlet nozzle, said connecting means having a plurality of non-aligned branches so that an air current moving in said connecting means is caused to change its direction of movement at thejunction of said nonaligned branches, said connecting means being permeable to air at said junction and said junction being anterior to said receptacle, the

'having a plurality of non-aligned and successive branches and having its outer end por- Ition connected to said receptacle so that if dust is caused tomove in said connecting means by an air current the dust 1s projected 1nto said. receptacle, said connecting means being permeable to air in aportion thereof which is directly adjacent to and which is anterior to and which is inclined to said receptacle. 3. In a vacuum cleaner having an outlet nozzle and a .dust collecting receptacle, connecting means intermediate said outlet nozzle and said receptacle, said receptacle being connected to said connecting means at the outer portion of said connecting means so that a current of air and dust which traverses said connecting means directly enters said receptacle to leave the deposited dust therein, said connecting means havin a portion thereof which is substantially allgned with said outlet nozzle, said connecting means having the next portion thereof anterior to said receptacle and laterally inclined to said Iirst portion and permeable to air.

4. In a vacuum cleaner having an outlet nozzle and a dust collecting receptacle, connecting means intermediate said receptacle and said outlet nozzle, said connecting means having an'opening at the end portion thereof which is remote from the outlet nozzle and to which the receptacle is connected, said connecting means being shaped to cause dust which is aspirated into said connecting means by an air current tomove into said receptacle without the Yformation of a counter current anterior to said receptacle, so that the receptacle serves to positively check the forward movement of the dust, said connecting means having a'portion thereof which is anterior to said receptacle and which is permeable to air, the axis of said permeable portion being non-aligned .with the axis of said receptacle. 5. In a vacuum cleaner having an outlet nozzle and a dust collecting receptacle made wholly ofvpaper and which is free from external supporting means for the wall thereof,

upwardly inclined connecting means intermediate said receptacle and said outlet nozzle, said connecting means being shaped to cause a current of air and dustmoving therein to 15 progress free from a counter current therein and in a direction towards said receptacle so that the dust is directly projected into said receptacle,said connectingmeans having an opening at the end portion thereof which is Se remote from said outlet nozzle and to which said receptacle is detachably connected with its mouth upwards, so that the dust is directly deposited in said receptacle by the air current, said connecting means being suciently permeable to air to prevent the rupture of said paper receptacle, .under the pressure of said air current.

In testimony whereof we aiiix our signatures. :a PHILIP GASNER.

SIGMU'ND GASNER.

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