US2439182A

US2439182A - Blower control device for suction cleaners

Info

Publication number: US2439182A
Application number: US503918A
Authority: US
Inventors: Joseph H Nuffer; Lynn H Latta
Original assignee: Air Way Electric Appliance Corp
Current assignee: Air Way Electric Appliance Corp
Priority date: 1943-09-27
Filing date: 1943-09-27
Publication date: 1948-04-06
Anticipated expiration: 1965-04-06

Description

Ap 6, 1948. J. H. NUFFER El AL BLOWER CONTROL DEVICE FOR SUCTICN CLEANERS Filed Sept. 27, 1 94s 3npentor-1 a 521%? Gltorneg Patented Apr. 6, 1948 Joseph H. Nufler, Toledo, Ohio, and Lynn 11. Lotta, Deerileld. Ill., assignors to Air-Way Electric Appliance Corporation, Toledo, Ohio,

acorporation ot'nelawarc Application September 2'1, 1Q4asena1m. 503,918

This invention relates to suction cleaners of the type in which the filtering and suction units are both enclosed within a rigid housing to which a dust-laden air stream is led through a flexible suction hose from a cleaning tool.

An object of the invention is to provide a vacuum cleaner which has provision for a blower 1 connection direct to the base of the cleaner, and wherein such blower connection need not pass through the cover. v

Another object is to provide a novel and improved arrangement for normally closing the blower outlet and at the same time opening an outlet or plurality of outlets'for normal discharge of the air downwardly through the base of the cleaner so as to avoid undesirable effects of a horizontally projected discharge stream. These and other objects of the invention will become apparent from aperusal of the following specification taken in connection with the accompanying drawings, in which: i

Fig. 1 is a longitudinal vertical sectional view of a suction cleaner embodying the invention;

Fig. 2 is a horizontal sectional view of the same taken as indicated by the line 2-2 of Fig. l, and

Fig. 3 is a rear elevation of the lower portion of the cleaner.

As an example of one form in which the invention may be embodied, we have shown in the drawings a suction cleaner wherein the suction unit, indicated generally at Ill, and the dust col-- lecting and air filterin unit, indicated generally at l2, are mounted in side by side relationship upon a low base M with the axis of both units vertical or substantially vertical, wherein a cover i6 is adapted to form, together with the base l4, 9, housing enclosing a chamber ll in which the suction and filtering units I and I2 are accommodated.

While the axis of the filtering unit l2 may not be exactly vertical, it is preferred to have it arranged on a generally vertical axis, in order that the dust laden air stream may enter the filtering and collecting receptacle at the upper end thereof, thus leaving the entrance portion of the receptacle always clear until the receptacle is substantially full of collected dust and refuse.

The cover it is roughly tear drop shaped, the wall thereof being extended downwardly around the suction and filtering units in and I2, to the plane of the base H. The rear end of the cover I6 is hinged as on ill to an arch shaped upward extension 22 of the rear end of the base M. A latch 26 normally latches the lower forward portion of the cover l6 to the base l4. By releasing 1 Claim (Cl. 230-47) 2 the latch 23, the cover l8 may be lifted to a position wherein its lower edge lies in a substantially perpendicular plane, substantially completely exposing the suction and filtering units Ill and I2;

5 for servicin 'operations; For example. withthe cover thus raised, the carbon brushes 30 of the suction unit I0 may be readily removed and replaced, and a filled receptacle 20 may be removed and replaced by a fresh receptacle.

a perforated supporting liner encircling the receptacle 20, and a tubular casing 38 encircling and spaced from the liner 36. At the upper end of the casing 38 is an annular channel 40 in which is mounted a gasket-l2 0t compressible material such as for example, soft rubber, and the receptacle 20, which is preferably of porous paper so that it may be disposed of when filled, is provided at its upper end witha non-porous flange 44 resting upon the gasket 42.

The cover I 6 is formed with an annular clamping flange 46 adapted to clamp the flange 44 against the packing ring 42, and with a delivery nozzle 43 receivable in a central opening 50 in a non-porous top member 52 which is secured to the receptaclelll, The top member 52 may be connected integrally with the flange 44 by an offset portion 54 by means of which the top member is stitched to the receptacle 20. The nozzle 48 carries a sealin rin 56 of compressible material, such as softrubber, which is adapted to seal the nozzle to the top 52. The parts are so arranged that the sealing of the nozzle 48 to the top 52 and the clamping of the flange 44 against the packing ring 42 is effected by moving the cover IE to closed position and latching it in that position. Formed in the cover It is an inlet 58 which is connected to the nozzle 48 by a short duct 60. To the inlet 58 may be attached one end of a conventional flexible suction hose to the other end of which is connected the usual cleaning tool. It is contemplated-that. the body of the cleaner, shown herein, may be pulled about by the hose thus attached to the inlet 58.

The casing 38 of the filtering unit I2 is mounted at its lower end upon a pair of arcuate seats 69 and ill formed integrally with and projecting upwardly from the base M. Spaces 68 between the seats 69 and [0 permit air to flow from the lower end of the filtering-unit to the upper end of the suction unit as indicated by the arrows. An inturned flange H, on the lower end of the casing 38, provides the means for attaching the casing 38 to the seats 69 and 10 in connection with suitable attaching elements such as the screws 13 The filtering unit l2 includes the receptacle 20,

extended upwardly through the base II and the

seats

88 and 18 and threaded into the flange 1|.

The suction unit l8 includes a conventional motor casing 18 having air inlet openings 18 at its upper end and mounted at its lower end upon a tan casing 84 which has air outlets 88 in its bottom wall; The fan casing 84, which is preferably formed or a pair of stampings Joined together i by flange means 88, extends into a well 81 defined within an annular flange 18 extending upwardly from the base M. The fan casing 84 is mounted upon the flange 18 throughthe medium or an annular plate 11 secured by screws 82 to the flange 18, and a vibration absorbing ring 88 of soft rubber or the like bonded to the ring 11 and to a ring 18 which is secured to the flange 88 of the fan casing.

The rear portion 0! the flange l9 merges with the extension 22. and the well 8| communicates with a blower outlet 81 formed in the extension 22. A valve disc 88, secured to a trunnion 88 pivoted in the base l4 centrally oi the well 8|, has an annular series of apertures 88 adapted to normally register with discharge openings 8| in the base l4. The disc 88 is also providedwith an upwardly extending valve element 82 which is adapted, when the openings 88 and 8| are in register, to

close the blower outlet 81. A lever 88, secured,

to the trunnion 88, is provided with a latch element 85 adapted to enter one opening in the base I! to determine the above described position of the well 8| from the chamber l1 so that the latter may function to transmit suction from the upper end of the suction unit |8 to the lower end or the fllter unit l2. The gasket 81. sealing the cover l8 to the base l4, makes it possible-for the pressure in the chamber 11 to be lowered so as to thus transmit suction irom the suction unit to the fllter unit. In applicants copending Patent 2,388,279, the

following subject matter disclosed but not claimed. herein is claimed: a suction cleaner having a-- base on which are mounted suction and filterin units and a cover enclosing such units, the cover being provided with means forming a portion or the air inlet duct communicating with the flltering unit.

We claim as our invention:

In a suction cleaner, a base, a suction uniton said base having an air inlet and an air outlet, an arch shaped upward extension on said base at one end thereof, said extension providing a blower outlet open at the outer end and communicating with the suction unit. outlet at its inner end, a cover on said base enclosing said the valve disc and to be withdrawn from that opening, utilized as a means to swing the lever 88 for rotating the valve disc 48, and to enter a second opening (indicated ail-86 in dotted lines in Fig. 2), for determining a position of the .valve disc 88 wherein the normal discharge openings 8| are covered by lmperi'orate portions of the valve 'disc 88 and the valve element 82 is moved away from the blower outlet 81. In this second position of the valve disc, the normal discharge openings 8| being closed and the blower outlet 81 being opened, the discharge from the suction unit l8 will be concentrated in the blower outlet 81, so that the discharge may be utilized for operating blowing tools at one and Ma hose the other end of which is adapted to be attached to the blower outlet 81.

' The cover I8 is sealed to the base Hby means of a gasket 81 mounted in a channel 88 which extends around the periphery of the base l4 and over the extension 22, and a flange '89 projecting.

inwardly from the wall of the cover l6 and adapted to engage the gasket 91.

The base I4 is mounted upon three-casters I88, arranged with a iorward caster on the central longitudinal axis of the base and two rearward casters spaced laterally on either side or said longitudinal axis. 7 I

The

resilient motor mountings

88, 83, 15 seal suction unit, said base being apertured in the region of said upward extension and at a point v communicating with the suction unit outlet to enable normal discharge of air from the suction unit, a pivotally mounted valve disc on said base having apertures adapted to register with the apertures in the base, an upwardly extending valve flange on the periphery of the disc adapted when the disc and base apertures are in registry to close the blower outlet, and means for turning the valve disc, said last means being accessible from the underside of the base;

. JOSEPH H. NUFFER.

LYNN H. LA'I'I'A.

REFERENCES CITED The following references are of file of this patent:

UNITED s'ra'rns PATENTS 278,603 Great Britain 1927 record in the v