Title:
Suction cleaner
United States Patent 2045270


Abstract:
The present invention relates to suction cleaners in general and particularly to a new and improved rotary agitator for a suction cleaner. More specifically the invention comprises the provision of a new and improved rotary agitator for a suction cleaner in which the beater element and the...



Inventors:
Earl, Hoover Howard
Application Number:
US69370733A
Publication Date:
06/23/1936
Filing Date:
10/16/1933
Assignee:
HOOVER CO
Primary Class:
Other Classes:
15/366
International Classes:
A47L5/34
View Patent Images:



Description:

The present invention relates to suction cleaners in general and particularly to a new and improved rotary agitator for a suction cleaner.

More specifically the invention comprises the provision of a new and improved rotary agitator for a suction cleaner in which the beater element and the brushing element form a unit and are removable as such from the body of the agitator.

It is an object of the present Invention to provide a new and improved rotary agitator for a suction cleaner. It is another object to provide an economically manufactured rotary agitator for a suction cleaner in which a brush and a beater element form a unit which is removable and replaceable as such. A still further object is the provision of an agitator for a suction cleaner in which the brush is positioned closely adjacent to the beater element and is removable from the agitator therewith. A still further object is. the provision of an agitator of the rotary type in which the beater element is provided with brush elements upon each of its sides and the three surface-contacting elements are removable as a unit from the agitator body. These and other more specific objects will be apparent upon reading the following specification and claims, and upon considering in connection therewith the attached drawings to which they relate.

Referring now to the drawings in which preferred embodiments of the present invention are disclosed; Figure is a side view of modern suction cleaner with a preferred embodiment of the present invention embodied therein, the cleaner being shown with certain parts broken away; Figure 2 is a side elevation, partly in section, of a preferred embodiment of the present invention; Figure 3 is a partial section upon the line 2-3 of Figure 4; Figure 4 is a cros section upon the line of Figure 2; -Figure 5 is a view in perspective of a brush element; Figure 6 is a view in perspective of the beater Selement with the brush-receiving channel rigidly formed thereon; Figure 7 is a side elevation, with certain parts broken away, of a second preferred embodiment of the present invention; Figure 8 is a section upon the line 8-8 of Figure 1;. Figure 9 is a view in perspective of the brush element provided in the second embodiment of the invention; Figure 10 is a view in perspective of the beater element included in the second embodiment; Figure 11 is a side elevation, with certain parts broken away, a third preferred embodiment of the present invention; Figure 12 is a view in perspective of the brush and beater element unit removed from the agitator; Figure 13 is a section upon the line 13-13 of Figure 11. Referring now to the drawings and Figure 1 In particular, a modern suctipn cleaner, indicated generally by the reference character I, is shown and comprises the usual parts of a modern suction cleaner including a nozzle, a suctioncreating fan, a driving motor, the entire unit being movably supported and there being provided a pivoted handle. The present invention does not relate to the suction cleaner as a unit, but instead to the rotary agitator which is adapted to be embodied therein, and more particularly within the nozzle thereof, and which is adapted to contact the lifted surface covering between the nozzle lips. This agitator in a preferred embodiment is shown in Figure 1 being indicated generally by the reference character II.

Referring now to Figures 2 to 6, inclusive, a preferred embodiment of the invention is shown and is seen to comprise an elongated cylindrical body 12 which is provided substantially midway of its length with a portion of reduced diameter 13 which functions as a pulley. A through-supporting shaft 14 rotatably supports the bodythrough bearings IS which are positioned within the counter bored ends of the body. A stationary thread guard I is carried at each end of the shaft, as in the usual agitator construction, and serves to prevent the accumulation of hair and foreign matter around the supporting bearings. Spaced at intervals in the body 12 of the agitator are outwardly opening channels or seats II, 17, et cetera which are adapted to receive and seat the surface-contacting element of the agitator. Within each seat II is positioned a brush 18 comprising a rigid back and flexible brises mounted therein. Each brush 18 is carried&by and secured in a channel 19 formed integrally on a rigid metallic beater element 20 which extends along the side of the seat II and immediately adjacent thereto, and reaches to a definite height above the surface of the body 12 of the agitator. The brush I $.s removable from the channel I$ of the beater element 26 by sliding endwise therefrom in a manner which is a obvious. To prevent looseness or rattling a spring 21 Is provided in the bottom of channel 19 which secures the rigid back of the brush against the top of the channel. With a brush and beater element unit in place in the agitator and with the brush inits seat, screws 22, 22 extend through apertures 23, 23 at the ends of each beater element and fasten it securely to the agitator body which is preferably of wood or some similar inexpensive material.

Referring now to Figures 7 to 10, inclusive, a second preferred embodiment of the invention is disclosed, in which the agitator body is indicated generally by the reference character 25 and is hollow, instead of solid as in the first embodiment, and is preferably of metal. A reduced portion 26 at substantially the longitudinal center functions as a pulley and an end cup 27 at each end of the agitator incloses a bearing 28 which rotatably mounts the agitator upon the through supporting shaft 29. Thread guards are again present and are indicated by the reference character 30.

The surface-contacting unit seats in the present embodiment are indicated by the reference character 31 and are open at their ends within the body of the agitator. The elements of the brush-beater unit adapted to be embodied in this modification of the invention are shown in detail in Figures 9 and 10. The brush 33 is again seen to comprise a rigid back having flexible bristles mounted therein. The rigid beater element 34 is again formed of a unitary piece of metal which is adapted to extend inwardly into the seat 31 where it is formed as the channel 35 adapted to receive the rigid back and overlie same. Inwardly extending tongues 36, 36 pressed from the sides of the beater element frictionally overlie the top of the metal back of the brush. Within and at the bottom of channel 35 is provided a spring 37 which is adapted to contact the bottom of- the brush back as in the first embodiment.

With the brush in place within the channel and with the ends thereof extended under the open ends of the brush seat 31, as is clearly shown in Figure 7, the spring 37 functions to hold the brush-beater unit in place within the seat.

Removal of the unit is possible by forcing one end of the brush back further into the opening at its end of the brush seat until the opposite end of the back was positioned within the seat. The said opposite end of the brush, together with the element 34 in which it is carried, can be pivoted from the seat and the unit removed in an obvious manner. The insertion of the unit is precisely the reverse operation. With the brushbeater element unit in place in the body the brush extends parallel to the rigid beater element, as is clearly seen in Figure 8, and upon Sbrush wear or beater deformation either or both can be replaced.

Referring now to Figures 11 to 13 inclusive in paiticular a- third preferred embodiment of the invention is disclosed in which the agitator body and supporting means are constructed as in the last described embodiment and the same reference characters are used to denote the same parts. In the present embodiment, however, the seat 31 in the agitator body is considerably wider than in the last embodiment, as is clearly seen in Figure 13, the opposite sides thereof being angularly disposed and there being provided two bottom surfaces each of which is perpendicular to the side which it contacts and which makes an angle with the other portion of the bottom surface.

The beater-brush unit in the present embodiment is seen to comprise an elongated rigid beater element 40 which is provided at each side with an elongated channel member 41 for substantially its entire length. Channels 41, 41 are angularly disposed relative to each other and the brushes 33, 33 seated therein with their backs within the channels are disposed relative to each other as are the sides of the letter V. A flap 42 is pressed from the side of the metallic channel to hold the brush back in place and prevent rattling. With Sthe element or unit positioned within its seat 31 within the agitator body, the bottoms of the channels 41, 41 are seen,to seat against the angularly positioned bottoms of the seat. The entire unit is held in place by means of screws 43, 43 which extend through aperture 44, 44 at the opposite ends of the beater element 40 and into suitable threaded seats 45, 45 formed in the agitator body 25.

I claim: 1. In a suction cleaner rotary agitator, a body, means to support rotatably said body, a surfacecontacting-unit seat in said body, a rigid beater element comprising a rounded elongated surfacecontacting portion and an elongated channel portion formed integrally therewith and spaced therefrom, a brush comprising a rigid back and flexible bristles, said brush back seated in said channel with said bristles extended adjacent said rounded surface-contacting portion, said beater element and brushforming a surface-contacting unit and adapted to be seated in said seat with said rounded portion and said brush extended radially beyond the periphery of said body, and means to secure removably said unit in said seat.

2. In a suction cleaner rotary agitator, a body, means to support rotatably said body, a channel in said body, a metallic member in said channel and being itself formed as a channel, one side of said member being extended from said body channel and curved back on said body to form a surface-contacting element, a brush having a rigid back seated in the channel of said metallic member, the bristles of said brush extended radially beyond the periphery of said body, and means removably securing said member and said brush relative to said body. 3. In a suction cleaner rotary agitator, a body, means to support rotatably said body, a channel in said body, a metallic member in said channel and being itself formed as an elongated rounded beater element with channels along the opposite sides thereof and therebelow, brushes including rigid backs and bristles carried by said channels in said member, said member being positioned in the channel in said body with said beater element and said brushes extended radially beyond said body, and means removably securing said member relative to said body.

4. An accessory for a suction cleaner agitator comprising a rigid member formed as a brushreceiving channel with one side extended and rolled to form an elongated rigid surface-contacting element.

5. An accessory for a suction cleaner agitator comprising a rigid member formed as a brushreceiving channel with one side extended and rolled to form an elongated rigid surface-contacting element, and a brush including a rigid back and bristles removably seated in said channel.

6, An accessory for a suction cleaner agitator comprising a rigid member formed as an elongated smooth-curved surface-contacting beater element with channels upon its opposite sides, and brushes including rigid backs and bristles seated in said channels.

7. In a suction cleaner rotary agitator, a body, means to support rotatably said body, a channel with open ends in said body, a metallic member in said channel formed as a brush seat in said channel and as a surface-contacting element thereabove, a brush including a rigid back positioned in said seat and extended into the open end of said channel and having bristles extended radially beyond said body, and means normally preventing the displacement of said brush back from the open ends of said channel, characterized by the fact that said means can be overcome manually and one end of said brush back displaced from one of said open ends to permit said brush and member to be removed from said body.

8. In a brush and beater element unit adapted to be seated in a suction cleaner rotary agitator, a rigid element formed as a surface-contacting beater and as a seat for an elongated brush at the side of and below said beater, said seat including means to restrict the movement of a brush positioned therein relative to said beater.

9. In a brush and beater element unit adapted to be seated in a suction cleaner rotary agitator, a rigid element, a surface-contacting beater at one side of said element, a brush seat at the op. posite side of said element, said seat including means to restrict the movement of a brush positioned therein, and a brush including a back seated in said seat and bristles extended therefrom.

10. An accessory for a suction cleaner agitator, comprising a surface-contacting beater, rigid seats for brushes upon both sides of said beater connected thereto, said accessory being adapted to be attached to and removed from a rotary agitator for a suction cleaner as a unit.

11. An accessory for a suction cleaner agitator, comprising a surface-contacting beater, brush seats upon opposite sides of said beater and cQnnected thereto, said seats including means to restrict the movement of a brush positioned therein in certain directions, and brushes seated in said seats and extended therefrom.

12. An accessory for a suction cleaner agitator comprising a beater, a brush seat into which a 15' brush back can be inserted and including means to limit the displacement of a brush positioned therein in certain directions, and means connecting said beater to said seat and retaining said beater in a definite angular relationship relative to said seat.

13. In a suction cleaner rotary agitator, a body, means to support said body rotatably, a surfacecontacting-unit seat in said body, a rigid element including a beater and a brush seat positioned in said first-mentioned seat, said last-mentioned seat including means to restrict the movement of a brush positioned therein in certain directions, a brush including a back positioned in said lastmentioned seat and extended above the surface of said body, said element and said brush being removable as a unit from said body, and means removably securing said element and said brush in place.

HOWARD EARL HOOVER.