US1394940A - Suction-cleaner - Google Patents

Description

W. W. ROSENFIELD.

SUCTION CLEANER. APPLICATION FILED JUNE 25. wgo.

1,394,940, Patented 00a 25, 1921.

William W Rosenfield y W M His Attor-ney UNITED STATES WILLIAM W. ROSENFIELD, 0}? WHITE PLAINS, NEW

YORK, ASSIGNOR T0 ELECTRIC VACUUM CLEANER COMPANY, INC., A CORPORATION OF NEW YORK.

SUCTION-CLEANER.

Original application filed May 24, 1915, Serial No. 29,968. Patent No. 1,348 cation filed June 25, 1920. Serial No. 391,778.

To all whom it may concern:

Be it known that I, WILLIAM W. Ross):- FiELD, a citizen of the United States, residing at White Plains, county of Westchester, State of New York, have invented new and useful Improvements in Suction-Cleaners, of which the following is a specification.

The present invention relates to suction cleaners and more especially to suction cleaners of the self-contained portable type which and the claims appended thereto.

In the drawing, Figure 1 is a side elevas tion of a portable suction cleaner embodying my invention, and Fig. 2 is a sectional view on a larger scale of the lower end of a dust bag.

Referring to the drawings, the suction cleaner'shown has a body formed by a motor casing 10 Within which an electric motor is mounted, fan casing 11 containing a centrifugal fan connected directly with and driven by the motor, and a nozzle 12 1 extending downward from the front of the fan casing. The nozzle is as usual extended transversely at the bottom to provide a comparatively long and narrow suction inlet opening or mouth between the lips of the nozzle. The body is mounted on a pair of running wheels 13 located adjacent and to the rear of the nozzle and a small rear wheel 15. The cleaner is operated by a pivoted handle rod 16 and is provided with a porous dirt receptacle or bag 17 connected at its lower end to the discharge throat or conduit 18 extending backward from the lower portion of the fan casing, the upper end of the bag being supported by a connection to the upper end of the handle rod.

As is well understood the dust laden air is discharged from the fan casing to the dust bag, the air passing out through the pores of the bag while the dirt is collected therein.

Specification of Letters Patent.

conveniently formed the neck of the receptacle or bag 17 which Patented Oct. 25, 1921.

,582. Divided and this appli- Now, according to my invention, and in order to maintain at all times a clear passage for the discharge of air and dust from the discharge conduit 18 into the porous receptacle or bag 17, a short piece of flexible tubing 19 is provided to extend from the end of the discharge conduit into the porous receptacle. As shown, the neck of the porous receptacle is secured to an annular connecting fitting 20 which is formed to fit over the end of the discharge conduit or throat 18 and provided with inclined shoulders to engage lugs on the end of the conduit so that by a partial turn the fitting may be tightly secured to the end of the conduit. the end of the discharge tube 19 and the end of the neck of the receptacle are wired or otherwise secured to the fitting 20. The discharge tube is preferably made of flexible fabric supported by a light coiled spring 21 arranged within the fabric tube and secured in a hem or otherwise to the outer end of the tube and suitably-secured at its inner end to hold it in place. The discharge tube by an extension of is turned in so that the tube and bag being in one piece may be secured to the annular fitting 20 by a single securing wire 22.

A flexible, elastic and normally non-collapsible discharge tube, such as the tube 19, extending into the neck of the 'bag from the discharge conduit will maintain the position in the neck of the bag as indicated by dotted lines in Fig. 1; but when the bag is drawn up by upward movement of the handle rod to its vertical position the tube 19 will yield and bend up with the neck of the bag, thus not interfering with the drawing up of the bag directly from the end of the discharge conduit 18. When the cleaner is in operation, as the tube 19 stands open in the position shown by dotted lines in Fig. 1, dust and dirt which collect in the bag will fall down about and below the discharge end of the tube 19 instead of entering the conduit and more or less clogging the discharge passage; and because of the self-sustaining, or non-collapsible, character of the tube 19 the discharge passage is always maintained open and no extra burden is imposed on the fan and motor such as may result from the use of a collapsible discharge tube, which, falling when the 7 with the apparatus which I now consider to represent the best embodiment thereof, but I desire to have it understood that the apparatus shown is only illustrative and that the invention may be carried out by other means. 7

What I claim as new and desire to secure by Letters Patent of the United States, is

1. The combination in a self-contained suction cleaner, of a dust receptacle of porous, flexible material connected at its lower end to the discharge conduit leading from the fan casing, and a flexible and normally non-collapsin discharge tube extending .from the disc arge conduit into the dust receptacle so as to leave a space for dirt to collect about said tube, said tube being formed of flexible material supported by an easily flexible metallic spring means, whereby said tube will bend without collapsing.

2. The combination in a self-contained suction cleaner, of a dust receptacle of poious, flexible material connected at its lower of flexible porous fabric supported end to the discharge conduit leading fromthe fan casing, and a flexible and normally non-collapsing discharge tube extending from the discharge conduit into the dust receptacle so as to leave a space for dirt to collect about said tube, formed of flexible material supported b a light, spiral spring whereby said tube wi l bend without collapsing.

3. The combination 1n a self-containedsuction cleaner, of a dust receptacle of -porous, flexible material connected at its lower. end to the discharge conduit leading from the fan casing, and a flexible and normally non-collapsin said tube being discharge tube extending from the disc arge conduit into the dust receptacle so as to leave a space for dirt to collect about said tube, said tube being fogmed y. a light, spiral spring whereby said-tube will bend without collapsing.

4. A' dust receptacle for self-contained suction cleaners comprising a bag formed of flexible porous material and having its lower end formed into an elongated neck turned into the receptacle, and a light, spiral spring which supports said neck in open position to form a flexible and non-collapsing discharge tube which will bend without collapsing.

In witness whereof, I have hereunto set my hand this 23d day of June, 1920.

WILLIAM W. 'ROSENFIELD.

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