US1940954A

US1940954A - Suction cleaner

Info

Publication number: US1940954A
Application number: US529318A
Authority: US
Inventors: John H Kohler
Original assignee: Hoover Co
Current assignee: Hoover Co
Priority date: 1931-04-11
Filing date: 1931-04-11
Publication date: 1933-12-26
Anticipated expiration: 1950-12-26

Description

Patented Dec. l26, 1933 PATENT orricE SUCTION CLEANER poration `of Ohio Application April 11, 1931. semina. 529,318

9 Claims.

The lpresent invention relates .to suction cleaners and particularly to new and improved agitating means in suction cleaners. cically the invention comprises the provision, in

5 a suction cleaner, of the combination of a rotaryvide a new and improved suction cleaner. It

is a' further object to provide new and improved surface-agitating meansin a motor-driven suction cleaner. A still further object is the provision, in a suction c1eaner,'of lcombined rotary and reciprocating. agitating means.l Still another object is the provision of a. suction cleaner in which rotary-agitating means are provided in the suction cleaner nozzlefrom which a reciprocating brush is driven. A still further object is the provision,.in ajmotor driven suction cleaner, of a rotary agitator embodying positive agitating means.- and brushing means, and a horizontally reciprocating agitator comprising a 26 brush. These and other objects will appear upon reading the followingspecication and claims and upon considering in connection therewith.

the attached drawing to which they relate.

In the drawing in which a preferred embodi- 80 ment of the. present invention is disclosed:

Fig.' 1 discloses a side v iew of a modern suction cleaner, with certain parts broken away, with the present invention embodied therein; f

Fig. 2 is a'section upon the line 2--2 of Fig. 1; Fig. 3 Ais an enlarged section thru the cleaner similar to that shown in Fig. 1 showing, indotted lines,` the supporting frame of the rotary and reciprocating agitators pivoted downwardly from the nozzle mouth; v

Fig. 4 is a. view-in perspective'of a reciprocating brush element; v Fig. 5 is a partial view .agitator-supporting frame "eating brush seat;

' 6 is a view latch or retaining cover of the brush seat; Fig. 'I isa viewin perspective of the plvoted brush supporting frame; -f Y The present invention is disclosedembodi in a modern suction cleaner which comprises a main casting or casing including v a nozzle 1, a fan chamber 2, which is' interior-1y connected to in perspective of lthe showing the reciprothe nozzle 1 by means of the air passageway 3,.

and an exhaust outlet 4 to .which is detac'hably connected a dust bag v'5. -A motor-casing 6 is in perspective of the pivoted positionedl upon ,thev main casingimmediately above the fan chamber 2 and houses a suitable', driving motor, which is not shown but the shaft '1 of which extends downwardly thru the fan chamber 2 where the fan 8 is mounted thereon. The shaft '7 extends into the rear end of the air passageway 3 Where it carries a suitable pulleyy 9. Th'e cleaner is movably supported by means of front wheels, of which one is shown resting upon a supporting surface being indicated by reference character 10, and by means of a rear wheel 11. A pivoted handle 12 is mounted on -the casing of the cleaner and providesuneans by which theoperator can propel the machine over the ysurface covering undergoing, cleaning.

Within the nozzle. 1 of the cleaner andextending thereacross is a rotary agitator which, ln its general appearance, differs but slightly from a common and well vknown type. This agitator .comprises a large diameter cylindrical body 13 on the surface of which are mounted helicallyextending

rigid beater elements

14, 14 which extend substantially the length of the agitator, with the exception of a small central portion which is reduced in diameter to form a pulley 15. Carried by the cylindrical body 13of the agitator and seated within the periphery thereof.

lare longitudinallyfextendlng brushes

16, 16 which are of a common and well known type and which'are removably secured in their seats in any suitable manner. Upon the surface body 13 of the agif tator, inmediately .adjacent the sides of the pulley 15, which is connected to the driving pulley 9 on the motor shaft 'I by a suitable belt 21, are encircling lcam races positioned below the periphery of.. the body. These cam races are designated by the

reference characters

22, 22 and have a function which will be apparent from the following description. A shaft 17, which extends -thru the .agitator with each of its ends resting in a seat 20 in the sidemember 19 of the frame 18, rotatably supports the agitator.

Between the

side members

19, 19 of the frame 18, which is pivoted within the .nozzle 1 at a point somewhat in the rear of the rear nozzle lip 23, is a front cross member 24 which extends closely adjacent and parallel'lto the front wall of the nozzle i, being secured thereto, and holding the frame 18- within the nozzle, by ordinary and suitable means which form no part of the present invention. This cross member 24 slopes downwardly from the lower end of thev 'front wall of the nozzle 1 and forms the front lip of the v nozzle thereby. cooperating vwith the rear nozzle lip 23 in definingthe nozzle mouth. vThe lip .24, llo

los

however, differs from the usual nozzle lip thru being provided withtwo transversely-extending openings or

apertures

25, 25, each of `which extends parallel to the axis of the rotary agitator and has a length substantially equal to half the length of the agitator. Seated upon the lip 24 with their bristles projecting downwardly thru the

apertures

25, 25 are

brush elements

26, 26 which comprise rigid backs having the exible brush bristles mounted therein. The length of each brush element 26 is slightly less than. the length of the aperture 25 in the nozzle lip 24 thru which the bristles extend, thereby permitting the brush a Hunted range of movement transversely of the agitator mouth, that is, parallel to the longitudinal axis of the agitator itself. To make use of this ,permissible movement of the

brushes

26, 26 in order to obtain the maximum agitation of the surface covering undergoing cleaning, each

brush element

26, 26 is provided at its inner end, with an upstanding lug 27 on which is mounted a` roller or head 28 of such size that with the brush seated upon the front lip 24 the roller 28 extends within the adjacent cam race 22 in the cylindrical body 13.

of the rotary agitator, with the result that upon the rotation of that body the brush 26 will be reciprocated back and-forth as the roller 28 is moved by the cam. To insure the permanent positioning and the correct alinement of each brush 26 with the aperture 25, relative to which it must slide, a pivoted cover element 29 is provided which is pivotally mounted upon a pin 30 carried by the side of the transverse member or lip 24. The cover member 29 is adapted to closely enclose the sides and top of the brush 26 to hold it in contact with the upper surface of the lip 24. To prevent the unintentional displacement of the cover relative to the lip the forward edge of the lip is curved upwardly, as at 31, and is adapted to resiliently clamp the forward edge of the cover which extends against it in the closed position.

In the operation of a suction, cleaner constructed in accordance with the present invention, the suction-creating fan within the fan chamber is rotated by the driving motor resulting in a decrease in the pressure existing within the nozzle thereby effecting the lifting of the surface covering undergoing cleaning against the nozzle lips, as is clearly indicated in Figure 1. With the surface covering suspended against the nozzle lips the rotary agitator istrotated at high speed by the driving belt 21.which is connected, as aforedescribed, between the pulleys 15 and 9, the latter carried by the motor shaft. 'I'he beating

elements

14, 14 upon the agitator function to violently vibrate the surface covering to dislodge the embedded foreign matter which is positmnea therein. 'rne-iongituamauy-

extemiing brushes

16, 16 upon the agitator surface cooperate with the rigid beating

elementsv

14, 14 and assist in the removal of the light dirt. As the agitatoris revolved the

brushes

26, 26, which are carried by the front nozzle lip 24 of the cleaner, are reciprocated transversely or parallel to the longitudinal axis of the rotating agitator and, thru extending below the nozzle lip, contact'the surface covering which is positioned adjacent thereto and function to deflect. bend and agitate the pile of -that covering in a direction at right angles tothe direction of vibration and bending effected by the beating

elements

14, 14

andthe brush elements

16, 16

'carried by the rotary agitator.

To effect the removal of the agitators constructed in accordance with the present invention from the nozzle, it is only necessary to pivot the supporting frame 18 downwardly to the' position shown in dotted lines in Figure 3. With the frame so positioned the rotary agitator may be lifted therefrom, the supporting shaft 17 sliding. outwardly from its open-ended seat 20 in each end plate 19 of the frame. With the rotary agitator removed it is then possible to pivot each brush-holding cover 29 on its supporting pin 30, a recess 32 being conveniently provided in the forward edge of the nozzle lip into which an instrument such as a screw driver may be inserted to wedge the cover free from the retaining forward edge of the lip. With the cover pivoted back it is then possible to remove the brush 26 by merely lifting it from the lip and withdrawing the bristles thru the aperture 25 thru which they.A were extended, there being two brush elements, the same operation is necessary to release the other element.

I claim:

1. In a suction cleaner, a driving means, a rotary agitator operatively connected to said driving means, and a horizontally reciprocating agitator operatively connected to said rotary agitator and mounted for reciprocation in a direction at an angle to the direction of cleaner motion.

2. In a suction cleaner, a body, a rotary agitator carried by said body, a reciprocating agitator carried by said body, means supporting said reciprocating agitator for movement parallel to the axis of said rotary agitator, and means to actuate said agitators.

3. In suction cleaner, means to displace the surface covering undergoing cleaning from the. supporting surface, means to vibrate the surface covering, means to brush the surface covering, and second means to brush the surface covering l1y at right angles to the direction of brushingof said first-mentioned brush means.

4. In a suction cleaner, means to displace the surface covering undergoing cleaning from the supporting surface, rotary means to vibrate the 12 surface covering and to brush the surface covering, and horizontally reciprocating means to brush the surface covering in a direction parallel to the' axis of said rotary means.

5. In a suction cleaner, a body including a 12 nozzle, a rotary agitator mounted in said nozzle, driving means operatively connected to said agitator, a transversely and horizontally reciprocating agitator carried in said nozzle,- cooperating means on said rotary and on said reciprocating 1i agitators to reciprocate the latter upon rotation of the former.

6. In `a suction cleaner, a body including a nozzle,` a rotary agitator mounted in said nozzle, driving means operatively connected to said 1: agitator, a transversely and horizontally reciprocating agitator carried in said nozzle, cooperating means on said rotary and on saidreciprocating agitators to reciprocate the latter upon rotation of the former, said cooperating means compris- 1I ing a cam race formed on said rotary agitator and a contact member carried by said reciprocating agitator.

'1. In, a suction cleaner, a body including a nozzle having a lip, a rotary agitator mounted 1 in said nozzle, driving means operatively connected to said agitator, a reciprocating agitator carried by and extending closely adjacent said nomle lipand extending parallel to said rotary agitator, cooperating means on said rotary and 1 on said reciprocating agitators to reciprocate the latter upon the rotation of the former.

8. In a suction cleaner, a nozzle, a pivoted frame positioned in said nozzle one side of said frame forming a' nozzle lip, a rotary agitator carried by said frame, a brush carried ,by said frame and slidable parallel to said agitator, means to actuatel said agitator and saidA brush, said agitator and said brush being adapted to betref moved from said nozzleupon the pivoting of said frame from said nozzle.

9. In a suction cleaner, a nozzle, a pivoted JOHN H. KOHLER.

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