US2287911A - Suction cleaner - Google Patents

Description

June 3o, 194,2.4

E.' l.. sNYDER sUcTIoN CLEANER Filed April 29, 1940 3 Sheets-Shes?l 1 INVENTOR Eugene L. Snyder /Y ATTORNEY June 30, 1942. E, L sNYDE-R 2,287,9ll

sUcTIoN CLEANER l Filed April 29, 1940 5 Sheng-Sheet 2 INVENTOR Elige/ze L Snyder ATTORNEY June 3o, 1942. E, SNYD'E Y 2,287,911

SUCTION CLEANER Filed April 29, 1940 5 Sheets-Shes?I 3 INVENTOR.

Z'zzgene L. Snyder vmotor cover; and

i motor ventilating air.

. mouth 3b;

Patented June 30, -1942 SUCTION CLEANER Eugene L. Snyder, Canton, Ohio, assigner to The Hoover Company, North Canton, Ohie, a cor- DOraton of Ohio Application April 29, 1940, serial No. 332,217

(ci. 1st-.516i` 1i claims.

This invention relates to improvements in suction cleaners and more particularly to an'improved and novel arrangement of the essentialelements of afportable handle-maneuvered suction cleaner calculated to provide a more compact assembly and'to imparta low streamlined appearance.

Therefore, 'one'of the objects cf the present cleaner design is to bring 'about the appearance of reduced height by recessing the top vof the main casing and mounting-the motor therein. I

A further object of the invention is to'provide a suitable Ventilating system-` for arecessed motor mounting, a' system characterized by airiinlet ports formed in marginal-wall segments of thev removable motor hood covering those portions of the motor receiving recess not covered by the hood properl f 'Il'he features of the improved 'cleaner design hereinabove noted as well as others'of lesser' importance are disclosed in the accompanying drawings, in which:

Figure 1 is a view of the cleaner in side elevation with portions of the main casing and motor hood broken away to show the internal design ;f

Figure 2 is a perspective view of the'cleaner completely assembled with the exception of the Figure 3 is also a perspective view of the cleaner `with'the motor hood `assembled-and portions of the hood and main casing removed so` as toshow the internal structure generally and moreparticularly the vinlet ports and passages for the The body of the cleaner herein disclosed con. sists of a cast metal casing l mountedupon pairs of front vand rear wheelsl; 2 jand having at its forward end a nozzle portion 3-` in the form of a chamber 3a extending the full width of the casingand opening downwardly to provide a suction The casing l is cast with a lfairly deep recess 4 covering practically itsentire top areawith the exception of narrow marginal portions along the sides; rearv and downwardly curved front face of the nozzle portion 3, as clearly shown in Figure 2.

'Within this recess 4 is mounted the motor 5, and immediately behindthe motor is a bracket 6 upon which is pivotally mounted the socketed fitting 1 supporting the cleaner-maneuvering handle. A

l Located centrally of the recessed top wall of the casing l `is a second recess or cavity 8 of considerably less diameter but of approximately the the side walls and bottom wall of a fan chamber for the suction-creating fan 9 mounted at the lower end of the armature shaft ofthe motor 5 and forming therewith a complete unit. 'I'he fan chamber communicates with an exhaust passage leading rearwardly and terminating in an outlet connection I to which is removably attached a dirt bag ll supported from the lhandlek a-t its y `outer end in the usual manner. i i

Referring nowy to the structural detailsof the motoraand its assembly on the main casing l, the motor frame ispreferably of a two-part construction -of molded, Bakelite or other suitable molded plastic substance,` andconsistsv. of acylindrical top section a and a somewhat rectangularv base section 5b, with the parting line between the two parts just below the top wall of the` latter.

`Within the motor framenis mounted a vertically arranged'armature I2 anda field `stack -.|3,` the latter'being ofthe uni-coil type, thus accounting for the'rforwardyprotrusion `of the basesection l appearance.

of the motorframe and its somewhatrunbalanced {The sections of the motori frame are fasteneditogether `by the usualarrangement of screws passing through and anchored inbosses I4, andthe upper. end of the frame isfpreferably Asurmounted by Aa vremovable cap AI5 supporting 'the upper armature shaft end bearing.

Thebottomxwall Hi` of the motor yframe is of substantial thickness andincludes a structurally A reinforced vange` I6a extending entirely: around the base of the motor and following thegenerally circular but somewhat irregular contourof-the fan chamber. The under `face ofthe bottomy wall flanged bottom wall 'I6 ofthe motor 'framef with its metal liner I'l forming the top wall-of-zthefan chamber eliminates the need for a separate fan chambertop wall and thus aids'in-reducing the height of the cleaner accordingly, Howeverto take advantage of lthis height reductionyit `is necessary vthat the viianged bottom-wallof the motor frame shall be commensurate with the diameter of the fan chamber and this accounts for the large area covered by the recess 4, extendas it does practically the full widthof the casing I, as well as the major portion of its length. In short, the recess could be considersame depth as the' recess 4, this cavity forming 55 ably less in both longitudinal and transverse dimensions if the accomodation of the motor were the only consideration.

This extended area of thel recess 4 is also reflected in the design and construction of the cover or hood member` I8 which normally extends over and conceals the motor, wiringl and the hoor-illuminating lamp mounted forwardly of the motor and presently to be described. In its general appearance, the cover I8 resembles a box-like hood or dome, relatively shallow and sloping toward its rear end. The hood or dome portion I8a of the cover is dimensioned to enclose only that portion of the motor frame projecting above the main casing I althought it does extend rearwardly to the black edge of `the main casing on either side of the handle mounting. Otherwise, the dome portion I8a. is considerably narrower than the width of the recess 4 and also terminates short of its front edge with the result that it is necessary to provide laterally extending flanges or wall segments I8b along the sides and across the front of the dome portion Ia to cover the remaining area of the recess 4. The wall segments I8b overlie and seat around the edges of the recess 4, with the forwardly extending segment flush with a raised panel I9 curving downwardly over the front face of the nozzle portion 3.

Referring now to the Ventilating or cooling system with which the motor is equipped, provision is made for admitting atmospheric air 20 to the motor frame.

standing webs28, 28 on the main casing I, these pairs 'of coacting webs abut each other edgewise, thereby converting the cavity 21 into a transverse passage communicating with the inlet port And finally, inlet ports 30, suitably arranged in the forwardly extending marginal wall portion IBb of the` motor hood, admit air from the surrounding atmosphereinto the passage 21. This provides a convenient arrangement for supplying air t9 the Ventilating system and 'especially so since the exhaust outlet 23 at the upper end of the motor frame opens directly into the space enclosed by the dome porat the base of the motor frame througha port 2|) at its frontend and opening into the space immediately below the field stack I3 and just above its bottom plate I6. The air then passes yupwardly and around the armature and field stack, as indicated by the arrows-in Figure 1,'

the circulation being induced by an auxiliary fan 2I mounted on thevarmature shaft just above the commutator 22 and rotating within its own fan chamber formed in part by the cap member I5 and separated from thespace within the motor frame just below. The Ventilating fan chamberhas an exhaust opening 23 facing forwardly and substantially in line with a transversely elongated opening or window 2.4 in the front vertical wall of the dome portion I8a of the motor hood I8.

As clearly shown in Figure 1, there is mounted Y between the exhaust outlet 23 from the ventilating fan chamber and the window 24, a lamp 25 together with a suitable lamp bracket 26 suption of motor cover I8, and hence the inlet passage for the Ventilating air must be closed oif from that space in order to maintain the circulation of air through the motor. Otherwise,

therev would be a short circuiting of `the motor Ventilating air from the exhaust 'at the top directly to the'inlet port at the bottom of the motor casing. i.

Thus apart fromthe provision herein made for conducting the Ventilating air to and from the motor, the merit of the present cleaner design ported upon the motor frame. This lamp performs the usual function ofv illuminating the floor immediately in front of the cleaner, the light therefrom being directed through the window 24, which, being open, serves also as an outlet port for the Ventilating air. It will be noted that the air passing over and around the lamp on its way from the upper end of the motor to the window 24 also serves to dissipate the heat emanating from the lamp while the cleaner is in operation.

Having-identified the inlet port 20 at the base of the motor frame and through which the air is admitted forcooling and Ventilating purposes, it now remains to identify the inlet openings and passage leading from the atmosphere to said inlet port 20.

Referring first to Figure 2, it will be noted that a narrow portion 21 of the recess 4 in top of the main casing extends transversely thereof just above the nozzle chamber and is divided off from the major portion beyond by a pair of upstanding web 28, 28 extending inwardly at right angles resides in the lowering of the motor with respectl to the body ofthe cleaner by recessing the top surface of thel latter and utilizing thel bottom plate of the motor assembly as the top wall ofthe fan chamber, thereby giving the cleaner the appearance of decreased height and more pleasing lines throughout. Also, the recessing of the cleaner body provides the necessary space for the air inlet passage to the motor.

Having set forth the novel features of the designembodying the invention, but without any desire or intention of being' limited to the precise disclosure herein, I claim:

l. In a suction cleaner, the combination of a casing including a nozzle chamber and'a fan chamber communicatingwith said nozzle chamber, said casing being relatively deeply recessed' substantially throughout the .top surface area thereof, a motor mounted within said recess with a cavity extending around the base thereof and having ports adjacent opposite ends thereof for the circulation of cooling air therethrough, and a cover member extending over the exposed portion of said motor and having laterally projecting marginal wall segments seating around the edges of said recess and closing off a portion of said'cavity to form an air passage communicating with the Ventilating port at the base of said motor frame, one of said marginal wall seg-4 Walls of said recess, said motor having an enclosed frame provided. with ports adjacent its base and upper end for the circulation of cooling air therethrough, and a cover member extending.

i til'ating port in the upper end of said frame and over said motor and having "an' opening communicating with the port at'the upper 'end of the moto'r frame land laterally projecting marginal wall segmentsl supporting said cover-'member upon the edges of said recess and closing off a space adjacent the ventilating'port in' the base of said motor frame to form an airv passageway,

the marginal segment over said passageway having a port therein communicating with the atmosphere;

3. In a'suction cleaner, the combination of a casing including a nozzle chamber, a fan chamber communicating with said nozzle chamber,

tending substantially throughout theupper surface thereof, a motor mounted in said recess and comprising a frame provided with `ports at its base and upper end for the circulation of. cooling air therethrough, said motor being spaced from the front edge of said recess with an open cavity necting said passageway with the atmosphere.

Y therein' adjacent the'port in the upper,v end of a, `forwardly projecting vrmarginal t wall,` segment extending over said cavity to forman air` passage and having portsl therethrough gto the latmosphere.- ,.-1 i 1 i i wheeled casing including aEnozzle Vchamber and `a fanv chamber communicatingl ,with said nozzle 'chamber and having an upwardly opening recess rearwardly of said nozzle chamber and above said fan chamber, a motor mounted on said Vcasing withits base portion depressed in said recess and comprising a framehaving'ports` at its lower and said casing having a relatively deep recess .ex-

upperends for the circulation of cooling air therethrough, the-forward portion of said recess `immediately above said nozzle chamber being partitioned off from the remainder of saidrecess Vby a pair-of upstanding webs to form av cavity open to the port at the base of said motorv f rame, and a cover member including a dome .portion extendingover thelmotor and having an opening `said motor frame and a-well portion .projecting forwardly from the base of saiddome portion and over said cavity to form an air passage and having ports therethrough for connecting the same with the atmosphere.; f

7. In a suction' cleaner,` thecombination ofa casing including a nozzle chamber and afan chamber communicating with said nozzle chamber and having an upwardly opening recess rearwardly of said nozzle chamber and above said fan chamber, a motor mounted in said recess and 4. In a suction cleaner, the combination of ya casing including a nozzle chamber,a fan chamber communicating with said nozzle chamber, said casing having adeep recess extending substantially throughout the upper surface area thereof, a motor mounted in said recess and comprising a frame provided with ports at its base and upper end for the cir-- culation of cooling air therethrough, said motor being spaced from the front edge of said recess relatively therethrough, the forward portion of said recess cavity extending transversely in front of Said motor to form a passageway communicating with the Ventilating port at the base of -said motor frame, .the forwardly projecting 'marginal wall segmentof said cover member ,closing the top of said'passageway and having ofeningsv therein to the atmosphere.

5. In a suction cleaner, the combination of a wheeled casing including a nozzle chamupper ends for the circulation of .cooling air therethrough, the portion of said recess immediately forward of said motor being partitioned oi frcm the remainderthereof to forman open cavity communicating with the port at the base of said motor frame, and a cover member including' a doine portion extending over the motor and having an opening therein adjacent the ven- .comprising a frame having ports at its lower and upper ends for the circulation of cooling air immediately above said nozzle chamber being partitioned off from theremainder of said recess by a pair of transverse webs to form a cavity open to the port at the base of said motor frame, y a cover member including a dome portion extending over the motor and having a window opening in the front wall thereof open to the port'of the\upper end of said motor frame, and a lamp mounted under said dome-portion adjacent said window opening, said cover member including a forwardly extending wall segment extending over said cavity to form an air passage with ports in the top wall thereof opening to the atmosphere.

8. A suction cleaner comprising a cleaner body having a nozzle at its forward end, a fan chamber spaced rearwardly of said nozzle, a suction passageway connecting said nozzle with saidfan chamber, said body having in its top surface an upwardly opening `recess extending rearwardly from said nozzle, a `portion of the bottom wall I of said recess forming the top wall of said suction passageway, a motorI mounted in said recess and overlying said fan chamber, said motor being spaced from the side walls of said recess and cleaner body, and a housing including a hood enclosing the projecting portion of said motor, a

wall extending laterally outwardly from the bottom edge of said hood and supported on said body along the marginal edge of said recess, said wall spanning the space between said motor and the side 'walls of said recess.

9. A suction cleaner comprising a cleaner body having a nozzle at its forward end, a fan chamber spaced rearwardly of said nozzle, a suction passageway connecting said nozzle with said fan from said nozzle, a motor mounted in said recess and projecting upwardly above the cleaner body, the side walls of said recess enclosing in spaced relation that portion of the motor in said recess, and a housing including a hood enclosing the projecting portion of said motor, a wall extending laterally outwardly from the bottom edge of said hood and supported on said body along the marginal edge of said recess, said wall spanning the space between said motor and the side -walls of said recess.

l0. A suction cleaner comprising a cleaner body having in its top surface an upwardly opening recess extending rearwardly from said nozzle, a motor mounted in said recess' and spaced from the side walls of said recess and projecting upwardly from said .recess above the cleaner body, and a housing including a hood enclosing the projecting portion of said motor, a wall extending laterally outwardly from the lower edge of said hood and supported on 'said body along the marginal edge of said recess, said wall spanning the space between. said motor and the side walls of said recess, means on said laterally extending wall cooperating with means on said recess wall to define a motor Ventilating air passageway communicating with said motor, and a Ventilating port in said laterally extending bottom wall communicating 'having a nozzle at its forward end, said body Y with said passageway and the atmosphere for cooling said motor.

11. VA suction cleaner comprising a cleaner body having a nozzle at its forward end, a fan chamber spaced rearwardly of said nozzle, a suction passageway connecting said nozzle with said fan chamber, said body having in its top surface an upwardly opening lrecess extending rearwardly from said nozzle, a portion of the bottom wall of said recess forming the top wall of said suction passageway, a motor mounted in said recess and overlying said fan chamber, said motor being spaced from the side walls of said recess and projecting upwardly from said recess above the cleaner body, a housing including a hood enclosing the projecting portion of said motor, a wall extending laterally outwardly fromlthe bottom edge of said hood and supported on said body along the marginal edge of said recess, said wall spanning the space between said motor and the side walls of said recess, said laterally extending wall cooperating with a top wall of said suction passageway to define a motor ventilatingair passageway communicating with said motor, and a Ventilating port in said laterally extending bottom wall communicating with said passageway and the atmosphere for cooling said motor.

EUGENE L. SNYDER.

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