US1783674A - Vacuum-cleaner attachment for automobiles - Google Patents

Description

Dec. 2, 1930. w. CTREHWOLD ET AL- 1,733,674

"""IUM CLEANER ATTACHMENT FOR'AUTOMOBILES Filed Julie 1, 1929 m C. Re/zwokl 3% J &. aft iNVENTORb ATTORNEY Patented 2, 1930 N T STATES? PAT NT- OFFICE WALTON cnannncn REHWOLD, or BEVERLY HILLS, AND JAMES eonnon DUFF, or

' LOS ANGELES, cann onnm vacuumemmas. arracnmnx'r non AUTOMOBILES A inli cation filedjl'une 1,

The invention has for an object to'provide a novel means for utilizing the exhaust gases emitting from an automobileexhaust'pipe or mufier for creating a suction that can be put to practical use in vacuum cleaning upholstery in or about the automobile.

In its more detailed nature the invention resides in the sprovision of a novel suction creating head mountable as an attachment miupon the discharge end of an exhaust or mufiler tube and comprising a ipe-like body, one end thereof 'beingmounta 1e on the said tube end and the other end being constricted to form a restricted'discharge end; a pipe section mounted in the receiving end of the l pipe-like body and constricted therein to provide a' surrounding enlarged suction chamber and a reducedjtubular portion within the enlarged portion which communicates with d the exhaust or mufller tube and closes direct communication into said enlargement and which is provided: with novel suction creating obstruction openings and extends to "a position for delivering into the discharge end of the pipeslike body and for providing a reannular passage from the enlarged a flexible vacuum line which maybe e uipped .with'a suitable cleaner nozzle to ena le suctioncleaning of upholstery.

W'th these and other objects in view which will'more fully appear, the nature of the invention will be more clearly understood by following the description, the appended accompanying drawings.

In the drawings: Figure 1 is an elevation invention, v

Figure 2 is a central longitudinal section, and. A

' Figure 3 is a cross section taken on the line claims, and the several views illustrated in the illustrating the 33 on Figure 2.

Like reference numerals designate corre sponding parts throughout the several figures of the drawings.

-In' the drawin s, 1 designates the tubular discharge end o the usual exhaust pipe or 1929. Serial no. 867,817.

5 to provide a reduced discharge end 6.

A second pipe-like body 7 is secured in the receiving end of the body 4 and is conicall'y constricted as at 8 to provide areduced discharge end 9 which extends to a point adjacent the entrance into the discharge endv 6 so as to provide a restricted annular passage l0and is so positionedin the body 4 as to provide a relatively large surrounding suction chamber 11 communicating with the discharge end 6 through the restricted throat 10.

The joined entrant ends of the bodies 4 and 7 conj ointly form a mounting neck which may be equlpped with bayonet slots 12 to engage the lugs 3 of the band 2 to provide a convenient removable mounting for the device.

The reduced tube portion 9 is provided with a plurality of suction creating obstruction openings 13 communicating between the interior of said tube and the suction chamber surrounding it. These openings are formed by transversely slitting the tube at thedesired intervals and bending the resulting lips 14 nearest the discharge end outwardly and the lips 15 nearest the inlet end inwardly to form obstructions to free passage of the exhaust gases through the tube portion 9.

A tubular extension 16 projects from one wall of the suction chamber and afi'ords means for connecting one end of a 'flexible tube or line 17 which may carry a suction nozzle (not shown) of suitable designlat its 'free end to enable vacuum cleaning of upholstery in or adjacent the automobile of which the exhaust pipe or mufiler forms a art.

P In operation, as the j'exhaust gases rush past the lips 14, 15 and the openings provided. thereby, and also past the restricted annular throatway 10, a partial vacuum will be created in the chamber 11. causing air at may be variously changed and modified without departing rrom the spirit and scope of our invention.

We claim:

1. A device of the character described comprising a tubular body having an entrant end and a discharge end and having openings therethrough spaced radially about its body intermediately of its ends, said openings being formed by transversely slitting the body and bending the resulting lips nearest the discharge end outwardly and the resulting lips nearest the entrant end inwardly, a second body surrounding the firstv mentioned body to form a surrounding vacuum chamber and having an open end extended beyond the discharge end ofthe first mentioned body, said extended open end being constricted as it passes said discharge end to provide a reduced diameter discharge extension and a restricted annular throatway surrounding said discharge end, and means to removably secure the device upon an exhausting medium.

2. A device of the character described comprising inner and outer tubular bodies forming therebetween a vacuum chamber and having inlet and discharge ends, the outer body having a suction inlet in communication with the vacuum chamber and located between the inlet and discharge ends of the inner body, the inner" body being provided with a plurality of openings located between the suction inlet of the outer body and the discharge end of the inner body, lips projecting inwardly from the inner body on the sides of the openings located towards the inlet end of the body to form a restricted passage there in, and lips projecting outwardly from the inner body on the sides of the openings lo cated towards the discharge end of the body, the lips at'each opening conjointly forming an inlet passage inclined inwardly towards the discharge end of the inner body.

3. A device of the character described comprising inner and outer tubular bodies forming therebetween a vacuum chamber and having inlet and discharge ends, the outer body having a suction inlet in communication with the vacuum chamber and located between the inlet and -discharge ends of the inner body, the inner body being provided with a pluralty of openings located between the suction inlet of the outer body and the discharge end of the inner body, lips projecting inwardly from the inner bod on the sides of the open ings locatedtowar s the inlet end of the body to form a restricted passage therein, and lips projecting outwardly from the inner body on the sides of the openings located towards the discharge end of the body, the lips at each opening conjointly forming an inlet passage inclined inwardly towards the discharge end of the inner body, the outer surfaces of the inwardly projecting lips and the inner surfaces of the outwardly projecting lips being concaved.

4. A device of the character described comprising inner and outer tubular bodies forming therebetween a vacuum chamber and having inlet and discharge ends, the outer body having a suction inlet in communica tion with the vacuum chamber and located between the inlet and discharge ends of the inner body, the inner body being provided with a series of openings arranged in a plane transverse to the longitudinal axis of the bodies and located between the suction inlet of the outer body and the discharge end of the inner body, lips projecting inwardly from the inner body on the sides of the o enin s located towards the inlet end of t e b0 y to form a restricted assage therein, and li s projecting outwar y from the inner b0 y on the sides of the openings located towards the discharge end of the body, the lips at each opening conjointly forming an inletpassage inclined inwardly towards the discharge end of the inner body.

In testimony whereof we hereunto afix our signatures. I

WALTON CLARENCE REHWOLD.

JAMES GORDON DUFF.

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