US2269447A - Suction nozzle - Google Patents

Description

Jan. 13', 1942. L F, ELL 2,269,447

sucfrroN NozzLE l :Filed .June 26, 1195s Patented Jan. 13, 1942 sUc'rIoN N ozzLE Lars Johan Faith Ell, Stockholm, Sweden, as-

signor to Electrolux Corporation, Dovelel., a

corporation of Delaware Application June zc, 193s, serial Ne. 87,389 In Switzerland July 2, 1935v 1 Claim.

My invention relates to suction nozzles for use in connection with a vacuum cleaner and particularly to a duplex nozzle provided with a large opening and having a valve member which may be selectively positioned so as to obtain a substantially uniform flow of air through the entire length of the nozzle opening, or so as to obtain a concentrated flow restricted substantially will be apparent from the following description considered in connection with the accompanying drawing which forms part of this specification, and of which:

Fig. 1 is a front View of a preferred embodiment of my invention;

Fig. 2 is a cross-sectional view taken on the line 2-2 of Fig. 1;

Fig. 3 is a cross-sectional view of a portion of the device taken on the line 3--3 of Fig. 2; and

Fig. 4 is a view similar to Fig. 3, but with certain parts in a different position.

Referring to the figures, reference character I0 designates a hollow nozzle body defining a lower elongated suction opening II. Integral with the central part of body I0 is a cylindrical portion I2, which provides a cylindrical bore I3 which extends within the body to the bottom thereof, as is apparent from Fig. 2. 'I'he hollow vbody is thus divided by the central bore into two laterally extending elongated branches'y which4 communicate with opposite sides of the bore. Rotatably mounted within bore I3 is a cylindrical valve member I 4 formed with diametrically opposed 'ports I5 which maybe brought into registry with the elongated branches, and an open lower end I6 permanently in communication with the central part of the elongated suction opening. A conduit I1 is adapted to be connected to a source of suction and is receivable within valve member I4. A spring pressed detent I8 engages angularly disposed recess I! in the valve member for retaining it in either of two different positions.

In the position of the parts -shown in Figs. 2 I

and 3, it will be seen that ports I5 in the opposite sides of valve member I4 are in alignment with the interior of the lateral branches'of the nozzle body ID, wherefore a substantially even iiow of air into the nozzle body through the entire length of the elongated opening II is obtained. However, if a concentrated flow of air is desired, conduit I1 is rotated in ordervto rotate valve member I4 to the position shown in Fig. 4. In this position the ports I5 in the sides of the valve member are closed and consequently the only opening is through the slot IB in the bottom of the valve member. Therefore, all of the air must pass through vthis restricted opening, thus producing a concentrated flow of air at this point.

While I have shown and described one more or less specific embodiment of my invention it is to be understood that this has been done for purposes of illustration only, and that the scope of the invention is not to be limited thereby, but

, is to be determined by the. appended claim viewed in the light of the prior art.

- What I claim is: I

In a suction nozzle, a hollow body having fixed structure forming a centrally located cylindrical bore and laterally extending elongated hollow branches providing an elongated undivided and continuous suction opening, said bore having lateral openings affording communication between said branches and said bore, a cylindrical valve member having ya bottom port and oppositely disposed side ports rotatably mounted in said body portion, said valve member being rotatable between-a Yposition in which said ports establish communication between said outlet and all portions oi' said elongated suction opening and a position in which the sides of said valve member restrict the area of said suction opening which is in communication with said outlet to substantially that dened by the bottom port of said valve member, and a suction conduit engaged and rotatable with said valve member whereby turning of the conduit eects rotation of the valve member.

' LARS JOHAN FAITH ELL.

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