US2307538A - Vacuum cleaner - Google Patents

Description

Fi gl,

Jan. 5, 1943.

G. R. PAULUS VACUUM CLEANER Filed April 1'7, 1941 m? a N N J N Invento George R. Faulus,

HisAtborn qy.

Patented Jan. 5, 1943 UNITED STATES VACUUM CLEANER.

George R. Paulus, Cleveland signor to Electric Vacuum mm. Ohio, aser- Company Inc., Cleveland, Ohio, a corporation or New York Application April 17,

'3Clalms.

attention is directed to the following description and the claims appended thereto.

In the accompanying drawing, Fig. l is a sectional elevation of avacuum cleaner embodying my invention; Fig. 2 is an end broken away, of the resilient supporting ring; and Fig. 3 is an end elevation or the motor and frame which cooperates with the supporting ring.

Referring to the drawing, there is shown a tank type vacuum cleaner having a cylindrical casing or tank I provided with end caps 2 and 4 respectively having an inlet opening 4 and an outlet opening 5. The inlet end cap 2 is releasably fastened to the casing by a plurality of latches B only one' of which is shown. Within the inlet end of the casing is a bag 1 supported by a frame 8 including a ring 9 having an outwardly extendelevation, partly ing flange l covered with gasket material H and clamped between the casing and the inlet end cap 2. The .bag has a reentrant portion l2 which i during the operation of the cleaner is drawn against a post I3 extending from a perforated inlet of the fan chamber toward the inlet opening t. The reentrant portion l2 increases the filtering area of the bag. The fan chamber comprises a cup-shaped member l5, carrying the perforated inlet M, which is telescoped over the end of a cup-shaped member I5. Within the tan chamber are centrifugalfans l1 and I8 fixed to a shaft IS. The air discharged from the fan I! flows to the fan i8 through straightening vanes 20 fixed to the outer end of the cup-shaped member IS. The shaft I9 is rotated by an electric motor comprising a rotating element 21 mounted on the shaft l9 and a stationary ele-,

ment 22 carried in'a frame comprising circumferentially spaced axially extending arms 23 connected at one end to a ring 24 carrying a bearing housing 25 for the shaft IS'and connected at the other end to a flange 26 presented to an end frame 21. The end frame 21 carries radially extending straightening vanes 28 having projections 29 seated in complementary depressions in the.

flange 26. The end frame 21 is secured to the flange 26 by screws, a threaded into bosses 3| on the straightening vanes 28.

The motor and fan are resilientl'y supportcd by a ring 32 of rubber orsimilar resilient material having its inner part clamped between the flange 1941, Serial Nth-389,031

20 and a ring a resting on the bosses u. The ring 38 cooperates with the passages for receiving the discharge or the fan it and directing the same over the motor through passages 84 the inner ends or the vanes. The.

is in sealing engageouter edge or the ring 32 ment with the inner surface of the cup-shaped member l8 so that all of the air discharged from the Ian I! flows over the motor. The air is kept close to the motor so as more efiectively to cool j the same by a ring 35 clamped between the casing l and the outlet end cap 3 and providing a relatively restricted annular passage 36 around the.

motor. The outer part 01' the supporting ring 32 is fixed to the cup-shaped member I 6 by screws 31 threaded into sockets 38 provided by-tabs 39 struck out or a metal rin 40 and embedded in the supporting ring 22. The metal ring is molded into the supporting ring 32. utacture ot the supporting ring 32, the metal ring 4| is placed in a mold having locating pins extending through openings 4| in the The locating pins have the shape indicated at the top of Fig. 1 in which the molded recess 42 corresponds to the part of the locating pin pro- Jecting through the opening 4|, and the molded recess 43 corresponds to the part of the locating pin on which the metal ring 40 rests. The rub-J ber ring has molded holes 44 for the bolts 20 and molded notches 48 which sembly or the rubber ring into the cup-shaped member it.

a The abovedescribed construction for resiliently supporting the motor and facilitates manufacture and assembly. The ring 32 is first assembled'on the motor which is then slipped into the cup-shaped member I6 01 the fan casing and fastened therein by screws 31. After completing the assembly or the fan casing,

the motor and fan'casing are inserted in a unit into the outer casing l and suitably fastened said casing and surrounding said unit, means securing the inner part 01'; said ring to said unit, a.

metal ring embedded in the outer part of the re- 5 silient ring and having sockets presented toward the casing, and fastening elements extending from the easing into cooperation with said sockets for securing the outer part dt'the ring to the casing.

2. In a vacuumcleanersa casing. a motor tan ring of resilient material within unit therein, a

vanes 28 to provide In the manmetal ring.

facilitate the as-'-.

the fans I! and I8 said casing and surrounding said unit, means securing the inner part of said ring to said unit, a metal ring embedded in the outer part of the resilient ring, tabs struck out or said metal ring transverse of its plane to define sockets presented toward the casing, and fastening elements extending from the casing into cooperation with said sockets for securing the outer part of the ring to the casing. v

3. In a vacuum cleaner, a casing, a motor Ian 10 'unit therein, a mi; or resilient material within said casing and surrounding said unit, means securing the inner part of said ring to said unit, a radially extending metal plate embedded in the outer part of the ring, a tabstruck out or said plate to define a socket presented toward the easing, and a fastening element extending from the casing into cooperation with said socket for securing the outer part of the ring to the casing.

GEORGE R. PAUL-US.

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