US2123913A - Dust collecting device for pneumatic cleaners - Google Patents

Description

D. B. REPLOGLE DUST COLLECTING DEVICE FOR PNEUMATIC CLEANERS July 19, 1938.

Original Filed July 20, 1931 Inventor A liorney Patented July 19, 1938 PATENT OFFICE DUST COLLECTING DEVICE FOR PNEUMATIC CLEANERS Daniel Benson Replogle, Berkeley, Calif., assignor to The Ohio Citizens Trust Company, Toledo, Ohio, a. corporation of 0hio,as trustee Application July 20, 1931, Serial No. 552,050 Renewed October 20, 1937 5 Claims.

The invention relates to pneumatic cleaners and dust collecting devices therefore, and more particularly to the connections between the bag and fan outlet pipe of the cleaner.

The invention will be more readily understood by reference to the accompanying drawing in which:

Fig. 1 is a perspective view on a reduced scale, illustrating one form of suction cleaner with a 5 dust collector bag attached thereto;

Fig. 2 is a side elevational view on an enlarged scale, partly in central cross section, and with parts broken away, illustrating one means for attaching the dust collector to the cleaner, and

Figs. 3 and 4 are detail views on a further enlarged scale, illustrating the attaching means.

Figs.'1 and 2 illustrate the dust collector applied to a suction cleaner of the type shown in my application Serial No. 499,575, filed Dec. 2, 1930. As shown, the cleaner includes a suction producing fan 20, a floor tool 2 I, a suction handle 22, a valve 23 for operatively connecting either the fioor tool or the suction handle with the source of suction. A fiexible connector 24 is shown interposed between the valve 23 and the suction handle 22, and a like flexible hose pipe 25 is interposed between the exhaust outlet 26 from the fan casing and the dust collector I0.

Both the connectors 24 and 25 are preferably deis suitably secured as by a rivet 29 a resilient or yielding detent member 30, having an outturned clasp 3| at the end thereof. A portion 32 of the detent member is normally yieldingly held in contact with the groove 21 by the resilience of the material of which the detent is formed.

The dust collector bag may be secured to the cleaner by drawing the mouth of the bag over the nipple 26a, as illustrated in Fig. 3, the detent serving to temporarily hold the same in position. An air-tight fit between the bag and nipple may be obtained by passing a strap 33 of leather or other suitable material around the mouth of the bag and through the narrow neck 34 formed in the detent 30. The strap forces part of the material of the bag mouth into the circumferential groove 21 in the nipple, and this groove together with the detent 30 serve to prevent the strap and bag from slipping. The ends of the strap may be secured together in any suitable manner, thus' providing a simple and effective air-tight connection between the dust collector and the connector 25 which communicates with the fan exhaust.

I claim: l

1. The herein described means for attaching a dust filtering element to the discharge pipe of a suction cleaner which comprises a. nipple operatively connected to the'discharge pipe, said nipple having a circumferential groove therein, a spring finger carried by and extending lengthwise of said nipple and having a bent-over portion normally forced into said groove, and a strap for securing the mouth of the dust collector over said nipple, said strap passing around said finger and being retained thereby, and forcing a portion of said bag mouth into said groove.

2. In a suction cleaner having a fan discharge nozzle, a dust collector bag having an inlet mouth, and means for operatively connecting the inlet mouth of said dust collector bag to said discharge nozzle, said means comprising a nipple in communication with said discharge nozzle, and having a circumferential groove adjacent the end thereof, a spring finger secured to said nipple and having a bent-over portion normally held in said groove by the resilience of the material of which the finger is composed, the mouth of said bag being'fitted over the grooved end of said nipple, and detachably held in position by the bent-over portion of said finger, and a strap passing over said bent-over portion of the finger and about the neck of the dust collector bag and serving to retain the same in position,

3. A dust collector bag adapted for use on a suction cleaner having an exhaust outlet pipe, said bag having a fiexible mouth, and means for connecting said dust collector bag to said pipe, said means comprising a circumferentially grooved connector, over which connector the mouth of the bag passes, a spring finger extending lengthwise of said connector and having a portion overlying the mouth of the bag, and a strap surrounding the bag mouthand forcing the material of said mouth into said groove, said finger havinga neck for retaining said strap to prevent movement thereof lengthwise of the connector.

4. A dust collector bag adapted for use on a suction cleaner having an exhaust outlet pipe, said bag having a flexible mouth, and means for connecting said dust collector bag to said for connecting said dust-collector bag to said pipe, said means comprising a circumferentiaily grooved connector, over which connector the mouth oi the bag passes, a strap surrounding the bag mouth and forcing the material of said-mouth into said groove, and means carried by said connector for holding said strap in place, said means comprising a spring finger extending lengthwise oi the connector and having a portion which fits over the mouth of the bag and having a. hooked portion to retain the strap against lengthwise movement with reference to the con- 10 nector.

DANIEL BENSON REPIDGLE.

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