US2140874A

US2140874A - Suction nozzle

Info

Publication number: US2140874A
Application number: US18591A
Authority: US
Inventors: Agnes S Juelson
Original assignee: Individual
Current assignee: Individual
Priority date: 1935-04-27
Filing date: 1935-04-27
Publication date: 1938-12-20
Anticipated expiration: 1955-12-20

Description

Dec. 20, 1938.

A. S, JUELSON sUCTIoN NoZzLE Filed April 27. 1935 Patented Dec. 20, 1938 UNITED AsTAras PATENT oFFicE ...stima Application `April 27, 1935, serial 10.18.591 y s claims.- '(ol. 15-158) This invention' relates to a suction nomle for a suction cleaner or similar devices. Y

An object of the invention is to provide a suction nozzle which is provided with means for readily picking up threads and other objects which the ordinary type of nozzle cannot pick up or can pick up only with great diiliculty. A further object. is to provide a nozzle in which the intake slot is diminished in size when .-the' nozzle cleaner. If desired, the housing A may be constructed as a part of a direct suction cleaner of the pusher type.

The rotatable member B is shown formed of a U-shaped metal strip II having the ends thereof turned to form anges I2. A pair of screw pins I3 extend through the end anges I2 and serve as mvots upon which the member B may rock. Preferably, the end flanges are extended to provide locking or stop abutmeits I 4, as illustrated more\clear ly in Figs. 4 and 5- Secured to the rocking member Il is a napengaging member or comb which may be of any suitable construction. Within the U-bend of the metal member I I is clamped a strip I5 of wood `or' other suitable material in 'which is secured a row of brushes I6. The inner side of the U- shaped strip ll is preferably extended to form a lip I'I'which serves as a backing or buttress for the brushes I6, while at the same time con- 5' trolling the size of the intake opening. through which air and foreign matter enter the nozzle.

With the rotatable member B in the position adjacent the casing opening A', it will be obl0 is moved in one direction. .A further object is served that the forward edge portion of member 10 to provide a nozzle with brush and valve means Bbengages the adjacent wall I8 of. casing A so by which strings, thread, etc. are carried. by the as to substantially seal the forward portion of brush to a diminished intake opening, where inopening A'. Between ,the lip l] and the rolled creased suction carries the threads, etc. into the edge portion I9 of casing A, to the rear of opennozzle. Other specific objects and advantages ing A', is aslot 20 which serves as the intakei will appearas the specification proceeds. slot for the nozzle. As shown more clearly in 'Ihe invention is illustrated, in a preferredv em- Figs. 2, 3,- 4 and 5, Athe intake slot 20 is rendered y bodiment, by the accompanying drawing, in wider and narrower by the operation of the rockl Whiching member B. As shown more clearly in Figs.

Figure 1 is a top plan view of a nozzle embody- 2 and 5, the slot 20 is relatively wide because the 20 ing my invention; Fig. 2, a bottom plan view lip I'I is almost in a vertical plane, while in Figs. showing the intake slot in fully opened position; 3 and 4, the slot 20 is relatively narrow because Fig. 3, a bottom plan view showing the intake the lip I'I is approaching a horizontal plane. slot partly closed; Fig. 4, a detail sectional View Inthe latter position of the rocker member B,

showing the intake slot partially closed, the secthe lower rounded side 2I ofthe U-shapedjmem- 25 tion being taken as indicated at line d-ri of Fig. 1; l ber II serves as a bearing upon which the fore- Fig. 5, a view similar to Fig. 4, but showing the part of the nozzle rests. intake slot in full-open position; .and Fig. 6, a In the operation of the device, when the nozzle sectional view oi a modiedform of nozzle. is drawn rearwardly across the rug, the member In the illustrationgiven, A designates a nozzle B rocks to the position shown inFigs. 2 and 5, 30 housing Aproviding on its lower side ,an intake the brushes I6 being drawnv to the substantially opening A; and B, a rotatable member mounted vertical positioz shown in these figures. The er1-l adjacent opening A' and partially controlling said gagement of the stop portion M of flanges Il with opening. v e the portion I-9 of casing A prevents further rotax 'I'he nozzle of housing A may be of any suittion of member B. The brushes I6 are thus held 35 able construction. In the illustration given, the in a position in which they are eiective lfor gathhousing is provided with an integral rearwardly ering threads and other .objects ordinarily diiiiextending pipe ill, which may --be secured to` cult to pick up with a `suction cleaner.' 'As the a hose from the vacuum cleaner or to a pipe nozzle is moved forward again, the member B m which is attached to the hose from the vacuum automatically rocks't the position shown in Figs. 40

3 and 4. and it will be observed `that'the brushes are brought almost to a horizontalposition, -and with their end portions 'directly at'the entrance of the narrowed intake slot 20. In this mann-er',

the threads and other'objects areplaoed in a 15V trailingpcsition in which they may easily slip on the brushes IS, while the increased suction resulting from the narrowing of the intake aperture leads to the ready removal of the threads, lint,

etc. Thus the forward and rearward strokes of the nozzle' result'in a constant rocking of member B and a constant widening and narrowing 'of the intake slot 29.

As alreadyv pointed out. the action of the brushes 'cooperatiwith the narrowing .of the 55 intake slot to remove lint, etc.; however, the nozzle is still an efficient device without such brushes in that the changing of the size of the intake slot with the resultant increasing and decreasing of the suction, serves to effectively clean rugs and to take up dust, lint, strings, etc. The rearward movement of the nozzle with the resultant wide opening of slot 20 serves to draw in large volume the loose dust, etc. on the rug. When the nozzle is then moved forward over the same area, the narrowed intake slot with its increased suction serves to dislodge and remove string and objects difficult to remove, and this may be accomplished without the aid of brushes. I prefer,

however, to vemploy brushes or the equivalent as illustrated. v

the tiltable device in the opposite dir ection is limited by the engagement of member 22 with the shoulder 29 of the upper casing. t

In the modified .construction shown in Fig. 6, the device rocks upon pivot 26 and is limited in its rocking movement by the engagement of member 24 with shoulder 28 and the engagement of member 22 with shoulder 2S.

In the 'operation of the device show -n in Fig. 6,

if dust, lint, etc. should accumulate behind the member 26 and adjacent shoulder 29, this material will be drawn into the nozzle when the metal member 24 is moved away from shoulder 28. It will thus be seen that the action of the rotatable member brings about a self-cleaning of the nozzle and its operating parts.

While in the foregoing illustrations, I have shown a mechanism which ia `operated automatically by the contact of the rotatable member with a surface upon which the nozzle is moved, it will be understood that other means for effecting movement of the rotatable or tiltingA member can be brought about by the engagement of other parts with the surface upon which the nozzle is moved, without departing from the spirit of my invention.

While I have shown the nozzle of a certain specific type, it will be understood that the invention is applicable to many types of nozzles and nozzles employing the invention may be formed as a part of direct suction devices machines, etc.

The foregoing detailed description has been given for clearness ofunderstanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

I claim:

1. A suction nozzle comprising a housing affording an intake opening, a pivoted valve member carried by said housing and provided with a lip controlling the size of said opening, means actuated by the movement of the nozzle over a surface for rotating said valve, and stop means `for limiting the extent of rotation of said valve.

2. A suction nozzle comprising a housing having an intake opening, and air-impervious means movable into alternate positions in said opening for varying the size of said opening and so formed as to provide at all times a free passage for air adjacent one edge of said opening, the movement of said means being automatically accomplished by'a reversal in the direction of -travel of the nozzle upon a surface being cleaned, said means being effective to automatically reduce the size of said opening upon movement of said nozzle in one direction and to increase the size of said opening upon movement of said nozzle in another direction.

3. A suction cleaner nozzle comprising a housing having a suction opening, and imperforate means for automatically varying the suction at said opening only upon a reversal of movement of the nozzle upon a surface being cleaned, said means cooperating with said suction opening and so formed as to provide at all times a free passage for air adjacent one edge of said open- 4. A suction cleaner nozzle comprising a housing having a suction opening, movable means for varying the size of said suction opening, the operation of said means being dependent upon the relative movement of the nozzle with respect to the surface being cleaned as said nozzle is moved in contact with said surface, said means being equipped with laterally projecting members for limiting its movement, said laterally projecting members being equipped with pivots whereby said means is mounted in said housing. y

5. In a nozzle of the chanacter set forth, a housing affording an intake opening, a rocker member pivotally mounted in the central portion of said housing and equipped with a brush, said rocker member being actuated by the movement of the nozzle over a surface, stop means on said rocker member for maintaining said brush in a trailing position when said nozzle is moved over a surface in one direction, said stop means also being adapted to engage said housing to prevent flow of air on one side of said rocker member as the nozzle is being moved over a surface in one direction and to disengage said housing to permit ow of. air when the movement of said nozzle is reversed. i v

6. In a nozzle of the character set forth, a housing affording an intake opening, a rocker member pivotally mounted in said housing, means for rotating said rocker member to a f'lrst position as the nozzle is moved over a surface in one direction and to a second position as the nozzle is moved in a reversed "direction, and means for preventing the passage of air on one side of said rocker member when said rocker member is in either saidnfirst or second positions, said means being adapted to permit the passage of air when said rocker member is being rotated.

' AGNES S. JUELSON.