US2605043A - Portable vacuum cleaner unit - Google Patents

Description

July 29, 1952 G. P. STI-:TSER

PORTABLE VACUUM 'CLEANER UNIT Filed sept. 27, 1948 NRW@ Patented July '29, 1952 PORTABLE VACUUM CLEANER'U'NIT George P. Stetser, Drexel Hill, Pa., assignorto f Michael Friedman, Brooklyn, NLY'.

Application september 27, 1ers; Seriana". 51,384

1 This invention relatestosuction cleaning devices designed primarily for use in service stations and thelike for cleaning automobile interiors;

A particular objects-ofthe invention iste-provide a deviceof the statedcliar'acter adapted for actuation from sources of compressed air generally available inservice station's'land constructed so as to make'prafcticable the-suction cleaningV of the interiors of.- automobiles from-'the outside of the latter, i. e., so that the eflicient use of the devicel in` the cleaning operation does not. entail thel necessityfor 'the operator entering the auto'- mobile.

Another object of the invention is to provide a device of the aforesaid characteristics in the form of a completely operative unit, said unit including means for attachment thereof by iiexible tube to an available source of air pressure.

Another more speciiic object of the invention i is to provide a device of the stated character wherein the suction nozzle is Widely separated from the aforesaid exible tube connection, and wherein further the manually actuated valve which controls the flow of air to the device is located in relatively close proximity to said connection; and wherein further the dust receptacle forming an element of the unit occupies a position relatively close to the said valve and iiexible tube connection so that the device may more readily be manipulated from the outside of the automobile to extend the suction nozzle to all parts of the interior. I

Still another object of the invention is to pro vide a device of the character described in the foregoing paragraph wherein the air duct system is associated with the suction nozzle in a manner aiording maximum suction for the available air pressure.

The invention resides further in certain structural and mechanical details hereinafter described and illustrated in the attached drawings wherein:

Fig. 1 is a view in perspective oi a suction cleaning device made in accordance with my invention;

Fig. `2 is an enlarged longitudinal sectional view of the device; and

Figs. 3 and 4 are sectional views taken on the lines 3-3 and 4 4, respectively, of Fig. 2.

With reference to the drawings, the device in a preferred form comprises an elongated tubular -body member I preferably made of a light weight metal such as steel, aluminum or magnesium alloy. At one end of this body member is a suction nozzle 2 which may be of more or less conto the nozzle opening.

ventional formfasillustrate'di andthe vother endfof-1 thetube is embracedbyearubberor other'v ferrule 3 and contains a cylindrical' plug 4" which'hasfjalongitudinalboreforreception of `atubeii Thi@ tube e, whicn nts nea-uy' within the boreo'ffuie c the nipple II by means of a conventional fitting I3 is a tube I4 which extends toward the nozzle end of the body member I and which terminates in a reverse curve as shown at I5 so that the open extremity is directed rearwardly toward the opposite end of the body member I. In the present instance the tube I4 is supported by a clip I It so that it lies against the wall I'I of the nozzle 2 at the side opposite that from which the nozzle mouth I 3 projects. From theA wall Il the terminal end of the tube curves smoothly downwardly toward the inner end of the mouth I8 Iand terminates at a point in proximity to said inner end. This arrangement has been found to afford maximum suction at the mouth I8. It is to be understood however that the device does not depend for operation upon this particular location of the terminal end of the air duct III. In general, however, the lower the air pressure the closer should the terminal end of the air ducts be The valve casing 9 contains a movable valve element 2I which is normally seated by a spring 22 thus excluding the pressure air from the tube I4. Valve 2I may be displaced downwardly from its seat by manual pressure upon a stern 23 which projects upwardly through the top of the body member I. The joint between the stem and wall of the body member being closed by a suitable fitting 20. It is to be noted that this valve is located in proximity to the terminal end of the body member i, i. e., that end to which the flexible air tube 'iis connected so that an operator in grasping this end of the tube will iind the valve in a position readily accessible to the iingers.

immediately in front of the plug I2 the tubular body member I is provided with a port 24, and securedto the outer side of the body inember in position surrounding the port 2d is a tting 25 having an opening 26 the inner end of which registers with the port. The fitting 25 is provided with an outer terminal ange 21 which provides for attachment of a fabric or other air permeable dust-retaining bag or receptacle 28. In the present instance this bag is bound detachably to the flange by a drawstring 29. The port 24--26 constitutes a discharge port ,for the air projected rearwardly in the tubular body member from the duct I4 and for the dust and dirt particles drawn into the tubular body member by suction through the nozzle 2 and entrained in the air stream, said particles being retained in the receptacle 28 in accordance with known principles.

It will be noted that the receptacle 28 is located in proximity to the rearoterminal end of the body member l so that this receptacle and the valve 9, constituting the primary operating elements, as well as the connection between the body member I and the flexible tube 1 are all located in proximity to the rear end of the body member leaving the forward end free and unobstructed so that it may be passed readily from the exterior of an automobile into even the more remote parts of the interior for over-al1 cleaning purposes. The operator may thus avoid the necessity for entering the car during the cleaning operation.

I claim:

In a vacuum cleaner of the character described, an elongated tubular casing having a partition adjacent one end thereof dividing the interior of the casing into terminal chambers of major and minor lengths respectively, said major chamber having an opening in the Wall thereof to- Ward the inner end of the chamber, an air duct extending into the casing by Way of the minor chamber and through the partition into the major chamber and terminating in the latter chamber in a discharge port directed toward said opening, a valve unit detachably mounted in the minor chamber and connected-in said air duct so as to control the flow of pressure air through the latter, and an actuating element for the valve extending through an opening in the wall of said minor chamber.

GEORGE P. S'I'ETSER.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,078,512 Mills Nov. 11, 1913 1,114,592 De Witt Oct. 20, 1914 2,074,666 Patalano v- Mar. 23, 1937 2,091,642 Lingenbrink Aug. 31, 1937 2,293,115 Child Aug. 18, 1942 FOREIGN PATENTS Number Country Date 508,152 Great Britain June 27, 1939 703,690 France Feb. 10, 1931

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