US1860854A - Suction cleaner nozzle - Google Patents

Description

" M y 1932- A. o. ENGBERG ET AL 0, 5

SUCTION CLEANER NOZZLE I f Filed April 26, ,1927' 2 Sheets-Sheet 1 May 31, 1932. A. o. ENGBERG ET AL SUCTION CLEANER NdzzLE Filed April 26, 1927 2 Sheets-Sheet 2 Patented May 31, 1932 KUNITED STATES PATENT OFFICE AXE]; OLOI ENG-BERG, OF STOCKHOLII, SWEDEN, AND ERIK IBILDE, OI BERLIN- rmurnnnor. GERMANY, assrenons,

BY MESNE ASSIGNMENTS, TO ELECTROLUX CORPORATION, A CORPORATION 01? DELAWARE- SUCTION CLEANER NOZZLE Application med April 26, 1927, Serial No. 188,740, and in German), September 8,

Our invention relates to vacuum cleaner nozzle apparatus and more particularly to nozzle a paratus of the type having a plurality of nozzle openings for diflerent kinds or degrees of suction. v

The object of the invention is to provide nozzle apparatus having main and auxiliary nozzle openings constructed so that, by a simple relative movement of parts, selec tivity of suction with respect to nozzle openings may be readil obtained.

The nature of t e invention will become apparent from a consideration of the following description taken in conjunction wlt-h the accompanying drawings forming a part of this specification, of which:

Fig. 1 shows a vacuum cleaner comprising nozzle apparatus in accordance with the invention;

Fig. 2 shows a detail of the apparatus of 'Fi 1' Fi 3 shows the apparatus of Fig. 1 with a difirent relative position of parts;

Fig. 3a shows a detail of an alternative locking means;

Fig. 4 is an end vie Fig. 1;

Fig. 5 shows one position of parts of another embodiment of the invention;

Fig. 6 shows a difi'erent relative position of parts'of the structure of F i Fig. 7 is a perspective view oi the end of a tubular member forming part of the apparatus of certain embodiments;

Fig. 8 shows still another embodiment of the invention with the parts in one position; and

Fig. 9 shows the structure of Fig. 8 with the parts in another position.

Referring to igs. 1, 2, 3, and 4, the apparatus comprises a nozzle body 10 which may be in the form of a cast body, made, for instance, of cast aluminum. The nozzle'body has an upper cylindrical portion 11 and a lower flared portion 12. At the bottom of thafiared portion 12 is the main nozzle opening 13. This nozzle opening is a relatively narrow, transversely elongated opening, the width thereof being shown in Figs. 1 and 3 of the apparatus of and the transverse extent being shown in Fig. 4. The nozzle bod has an intemal bore 14. This bore exten s across the down? wardly directed channel 15 leadingto openmg 13 and through the end wall 16 of the nozzle body. This provides an opening 17 in this end wall, which we will term the auxiliary opening of the nozzle body.

The inner part of the cylindrical portion 11 is of greater diameter than the bore 14. A cap member or nut 18 is screwed onto the upper end of the cylindrical portion 11 of the nozzle body. central opening 19. i

A tubular member 20 is positioned in the nozzle body. Tubular member 20 is of an external diameter substantially equal to the diameter of bore 14. This tubular member is positioned in the passage of the nozzle body 10 formed by the interior of the cylindrical portion 11, the bore 14 and the opening 19 in member 18. An annular space 21 is formed between the outer surface of tubular member 20 and the inner surface of the cylindrical portion 11.

Secured to tubular member 20 is a guide ring 22. Ring 22 carries a projecting stop or guide pin 23, which may be in the form of a screw. The tubular member 20 is longitudinally slidable in the cylindrical portion of the nozzle body. Ring 22 moves with the tubular member 20 and in the annular space 211. The stop 23 moves in a longitudinal s 0t portion 11. Adjacent'the ends of slot 24 are cross-slots 25 at right angles thereto adapted to receive stop 23.

A spring 26 is fastened at one end 27 to ring 22 and at the other end 28 to the nozzle body. Spring 26 is under torsion so that it will move stop 23 into cross-slots 25 when tubular member 20 is in such position as to permit this. It also exerts a force longitudinally of the tubular member, urging it toward the position shown in Fig. 1. A packing ring 29 is inserted between cap member 18 and. the cylindrical portion of the nozzle body the nozzle apparatus at this point.

Tubular member 20 has one of two positions in the nozzle body. Fig. 1 shows what This cap member has a 24 cut in the inside surface of cylindrical to prevent leakage of air into we term a retracted position. Fig. 3 shows what .we term an advanced position. In the retracted position, shown in Fi 1, a cover or flap lid 30 covers opening 1 Suitable means is provided to urge cover 30 into closed osition over opening 17 as by a spring hinge 31. The parts are finished so that there is a tight fit between cover 30 and the portion of the nozzle body adjacent opening 17 when the cover is closed.

In the advanced position, shown in Fig. 3, the end of tubular member 20 projects through opening 17 and holds cover 30 open. In this position the side of tubular member 20 at 32 closes the flared passageway 15. In this position the end opening 33 of the tubular member which is formed at an angle to the axis thereof, as shown, constitutes the auxiliary nozzle opening of the nozzle apparatus as a whole.

Tubular member 20 is connected to a flexible hose member 34, in turn connected to the suction inlet of a vacuum cleaner housing 35 enclosing the usual suction-producing mechanism.

When the main nozzle opening is to be used for suction, the tubular member 20 is in the retracted position shown in Fig. 1. Cover 30 then covers opening 17 so that air can be sucked in only through the main nozzle opening 13. In this position of the parts, stop 23 is in the upper cross-slot 25 and isurge thereinto by the spring apparatus is being used in this position for cleaning a carpet. Suppose that there is a thread, or, for example, a relatively heavy object, on the carpet, which is not removed by the suction through opening 13., To obtain greater suction, the parts are shifted to the advanced position shown in Fig. 3 so that the auxiliarynozzle opening 33 with its greater suction effect may be used for picking up the thread or object. To change the position, the parts are first-twisted relative to each other so that stop 23 leaves crossslot 25. The parts are then moved longitudinally relative to each other against thetension of spring 26 and stop 23 moves" in groove 24 until reached, when the spring 26 urges the -stop intothis cross-slot. The parts 'are' then' looked in the advanced position shown in Fig. 3.

It will be seen that the main nozzle opening is cut off by the tubular member when the auxiliary nozzle opening is used. When the auxiliary nozzle opening is not needed any more,.the parts are again twisted to remove stop 23 from the lower cross-slot 25 and the parts are then permitted to move longitudinally until stop 23 engages the upper cross-slot 25, the parts then being locked inthe position shown in-Fig. 1.

Fig. 3a shows an alternative means for locking member 20 in given position. I This 26. Suppose that the the lower cross-slot 25 *is means includes a lock-shot 36, spring pressed by a spring 37 and cooperating with a recess 38 in tubular member 20.

In Figs. 5 to 9, the same reference characters are used as those for corresponding parts in Figs. 1 to 4.

In the embodiment shown in Figs. 5, 6, and 7, the auxiliary nozzle opening is formed by the end opening of tubular member 20 in cooperation with the cover 30. The end opening of tubular member 20 is formed, as shown in Fig. 7 by cutting the tubular member transversely at 40 and obliquely at 41. The inside surface of the cover 30 is flat and cooperates with the surface 41 in advanced position to restrict the size of the auxiliary nozzle opening to the part limited by the surface 40 and the part of the cover adjacent surface 40. In other words, in this embodiment, cover 30 cuts oil the end opening of tubular member 20 so far as corresponds to surface 41. In the apparatus illustrated it will be seen that this reduces the auxiliary opening 33 to approximately one-half of the internal transverse area of tubular member 20. In this embodiment also, the side surface of tubular member 20 at 32 cuts off the main nozzle opening 13 in advanced position. It will be seen that by this means the auxiliary nozzle opening can be reduced so that a great suction velocity is obtained. Otherwise than (1 this difference, the embodiment of these Figs.

5 and 6 is similar to that of the previously described figures.

The embodiment shown in Fig. 8also differs merely in the formation of the auxiliary nozzle opening, which in this embodiment is designated b reference character 42. Open- 7 ing 42 is a xed opening in the nozzle body 10 immediately in front of the main nozzle opening 13. The front wall 43 of the nozzle body is integral with the nozzle body proper, and between this wall and channel 15 is a web 44 in which is an .opening 45. The tubu- I lar member 20 is formed as shown in Fig. 7. In the advanced position shown in Fig. 8, the. surface 41 of the tubular member 20 abuts against the wall 43. The surface 40 .engages in the opening 45. .Passage is provided for auxiliary suction through openin 42 and through that part of the end op ening of tubular member 20 which is bounded by the surface 40. Again in this embodiment the side wall of tubular member 20, at 32, cuts 0E suction through the main nozzle opening when the tubular memher is in advanced position as shown in Fig.

8 and auxiliary suction is being used. lVhen tmubular member 20, in this embodiment,

is pulled back to retracted position, the whole end opening of tubular member 20 is made available for suction and the suction in this case is both through the main nozzle opening 13 and the auxiliary nozzle opening 42. For picking up a thread or the like from a car et the arts are moved to the position ment for determinin the relative position through the main nozzle of parts, it will be understood that theseflmay be used alternatively. 3 It will be seen that in each of the embodiments, the side of the tubular member 26 and the inside of the nozzle body are formedto provide a valve for cutting off suction opening when the tubular member is in-advanced position.

It will be understood that variationsin structure may be made within the spirit and scope of the invention as defined in the appended claims.

e claim:

1. In a vacuum cleaner, a nozzle body having a main nozzle opening and an auxiliary nozzle opening therein, and a tubular member longitudinally movable in said nozzle body to communicate one or both of said nozzle openings with the suction of the vacuum cleaner.

2. In a vacuum cleaner, a nozzle body having a main nozzle opening and an auxiliary nozzle opening therein, a tubular member slidable insaid nozzle body and communicating with the suction of the vacuum: cleaner, said tubular member having an opening therein to communicate said member with said nozzle openings, and means; positioning said tubular member in said nozzle body to communicate with one or both of said nozzle openings. R y

3. In a vacuum cleaner, a nozzle body having a. main nozzle opening and an auxiliary therein, .a' tubular member nozzle openin slidable 1n sa1 nozzle body and communicating with the suction of the vacuum cleaner,. said tubular member having an. opening for tubular member being formed to permit suc- 1 communication with said nozzle openings,

and means positioning said tubular member in said nozzle body to communicate with one;

or both of said nozzle openings, said positionin means including a longitudinal slot in said pin in said tubular member.

4. In a vacuum cleaner, a nozzle body having a; main nozzle opening and an auxiliary nozzle opening thereln, a tubular member slidable in sald nozzle body and communicat-ing wlth the suction of the vacuum cleaner, for communication with said nozzle open- 'ings, and -means positioning said-tubular member in said nozzle "body tocommunicate wlth one or both of said nozzle openings,

said positioning means including a longitudinal slot in said nozzle body, cross-slots at the ends of said longitudinal slot and a cooperating guide pin in said tubular member. I

ig. 8, which provides a verystrong suction through the auxiliary sional force said stop member into said cross-slots for locking the tubular member in its limiting nozzle body and a cooperating guide said tubular member having an opening 5. In a vacuum cleaner, a nozzle body having a main nozzle opening and an auxiliary nozzle 0 ning therein, a tubular member slidable in saidnozzle body and communieating with the suction of the vacuum cleaner, said tubular member having an opening for communication with said nozzle openin'gs, and means positioning said tubularv :member in said nozzle body to communicate said nozzle openings, said positioning means including alongituwith one or both of dinal slot in said nozzle body, cross-slots at the ends of said longitudinal slot, a cooperating stop member in said tubular member, and means normally urging said tubular member to one end of said longitudinal slot,

said last mentioned means exerting a toron said tubular member .to move positions.

6. In a vacuum cleaner, a nozzle body having a main nozzle opening and an auxiliary nozzle opening therein, a tubular member slidable in said nozzle body and communicating with the suction of the vacuum cleaner and having an opening thereinvfor communicating with the nozzle openings, and spring pressed locking means positioning said tubular member in said nozzle body to communicate with one or both nozzle openin s-as-desired.

Ina vacuum cleaner,a nozzle body having a main opening and an auxiliary opening therein and having acylindrical portion,

a tubular member longitudinally slidable in said cylindrical portion, and means for posit oning said tubular member in said .cylindrical portion in either an advanced position or a retracted position, the side of said tubular member and the inside of said nozzle body comprising a valve for cutting off suction through said main opening, and said tion through said auxiliary opening in advanced position and to permit suction through said main opening in retracted posipermit suction and the side thereoftogether with the inside of said. nozzle body comprisinga valve for cutting oif suction through the other openingin one of said positions, and said tubular member permitting suction through said other opening in the other of said positions.

9. In a vacuum cleaner, a nozzle body having a main opening and an auxiliary opening therein and having a cylindrical portion, a tubular member longitudinally slidable in said cylindrical portion, and spring-pressed means for positioning said tubular member in said cylindrical portion in either an advanced position or a retracted position, the side of said tubular member and the inside of said nozzle body comprising a valve for cutting off suction through said main opening, and said tubular member being formed to permit suction through said auxiliary open-' of together with the inside of said nozzle body comprising a valve for cutting off suction through the other opening in one of said positions, and said tubular member permitting suction through said other opening in the other of said positions.

11. In a vacuum cleaner, a nozzle body having a plurality of openings therein and having a cylindrical portion, a tubular member slidable in said cylindrical portion, and means for positioning said tubular member in said cylindrical portion in either of two positions, said tubular member cooperating with one of said openings to permit suction and the side thereof together with the inside of' said nozzle body comprising a valve for cutting ofi suction through the other opening in one of said positions, and said tubular member permitting suction through said other opening in the other of said positions, said positioning means comprising a ring'secured to said tubular member, a stop secured to said ring and projecting therefrom, said cylindrical portion being internally slotted with a longitudinal slot and cross-slots, saidstop being .adapted to 'move in said slots, and a spring between said tubular member and said nozzle body, having one end secured in said ring and the other end secured in said nozzle body, said spring being under torsion to urge said stop into either of said cross-slots and acting to urge said tubular member longitu dinally in said cylindrical portion to one of said two positions.

12. In a mouth piece for a vacuum cleaner,

a nozzle, a nozzle member movable relatively to sa1d nozzle for controlhng communicatlon of said nozzle with the suction means of said cleaner, a longitudinal guide slot in said nozble having cross slots at the ends thereof, said nozzle member having a stopslidin in said slots, and means normally urging sa1d nozzle member to one end of said longitudinal slot, said means also exerting a tOISlOIlflIfOI'Oe on said nozzle member to move said stop into said cross slots for locking the nozzle member in either of its limiting positions.

13. Suction cleaner nozzle apparatus comprising a nozzle member formed with a first passageway therethrough, a projection on said member having a second passageway therethrough and forming a main suction nozzle, said second passageway communicating with said first passageway, said member being formed with an auxiliary nozzle opening in line with said first passageway, means for closing said auxiliary nozzle opening, a tubular member slidably mounted in said first passageway and having an open end, means for'positioning said tubular member so that the open end thereof extends through said auxiliary nozzle opening, and means for positioning said tubular member so that said open end is within said nozzle member, said second passageway communicating with said first passageway at a point between said auxiliary nozzle opening and the open end of said tubular member when the latter is in the last mentioned position.

14. Suction cleaner nozzle apparatus comprising a nozzle member formed with a first passageway therethrough, a rojection on said member having a second passageway therethrough and forming a main suction nozzle, said second passageway communicating with said first passageway, said member being formed with an auxiliary nozzleopening in line with said .first passageway, a hinged spring pressed member for normally closing said auxiliary nozzle opening, a tubular member islidably mounted insaid first passageway and having an open end, means for positioning said tubular member so that the open end thereof extends through said auxiliary nozzle opening, and means for positioning said tubular member so that said open end is within said nozzle member, said sec ond passageway communicating with said first passageway at a point between said auxiliary nozzle opening and the open end of said .tubular member when the latter is in the last mentioned position.

In testimony whereof we hereunto aifix our AXEL- OL OF ENGBERG. ERIK BILDE.

' signatures.

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