US 2221630 A
Description (OCR text may contain errors)
Nov. 12, 1940. G, E, BJRKMAN 2,221,630 I sUcTIoN NozzLE' Filed Oct. 2G, v19.36 2 Sheets-Sheetl l ATTORNEY.
Nov. 1-2, 1940. G. E. BJRKMAN 2,221,630
SUCTION NOZZLE Filed Oct. 2G, 1936 l 2 SheetS-SheeI 2 4 IP-'VBN OR. BY v, 4, 3M
Patented Nov. 12, 1940 PATENT oFFicE SUCTION NOZZLE Gustaf Erik Bjrkman, Stockholm, Sweden, as-
signor to Electrolux Corporation, Dover, Delf, a corporation of Delaware Application October 26, 1936, Serial No. 107,617
` In Germany November 4, 1935 2 Claims.
My invention relates to suction nozzles and more particularly, to a brush nozzle especially adapted for cleaning windows and other surfaces enclosed within a frame-like boundary.
One of theobjects of my invention is to provide a suction tool of the above nature so constructed that it may be manipulated readily into the corners formed by a frame bounding the surface. In order to accomplish this object, the
l0 brush is made preferably triangular with no angle greater than 90 degrees. Also, the sides of the nozzle are straight. The member adapted to be connected to the suction conduit is so mounted on the body portion of the nozzle that the nozzle u may turn freely in the plane of the surface being cleaned and the suction conduit may be pivoted in any plane at right angles to the surface.
Another object of my invention is to provide -an arrangement in conjunction with a suction nozzle for applying a window cleaning substance to a window.
Other objects and advantages of my invention will beapparent from thefollowing description considered in connection with the accompanying drawings, which form a part of this specification,
and of which:
Fig'. 1 is a view showing my improved nozzle as used for cleaning a window;
Fig. 2`is a cross-sectional view of the nozzle Fig. 3 is a bottom view of the nozzle;
Fig. 4 is a top view of the nozzle;
Fig. 5 is a cross-sectional view of another embodiment of ymy invention; and
83 Fig. 6 is a cross-sectional view of the nozzle shown in Figs. 1 through 4, and a cleaning material applying device connected thereto.
Referring more particularly to Fig. 1, reference character Il indicates a pane of glass supported 4o within a frame II. `As is usual with windows or mirrors, the sides of the frame are joined at right angles, as is designated at I2.
Reference character I3 indicates generally a suction nozzle in accordance with the present in- 45 vention. Nozzle I3 includes a body member I4 made up of an upper plate I5 and a lower plate I6. 'I'hese plates are triangular in shape and preferably have the shape of an equilateral triangle.
L 50 Plates I5 and I3 are formed with aligned centrai openings I1 and plate I6 is formed with an annular groove or recess I 3. A circular member i9, preferably composed of two semi-circular parts meeting along the line 20, is formed with a circular flange 2l adapted to be received within groove I8, and is thus rotatably retained between plates I5 and I6 when the plates are secured together by means of screws 22.
A suction conduit connection member 23 is formed with a tubular portion 24 adapted to fric- 5 tionally receive a suction conduit 25. Rigidly secured to the opposite end of member 23 is a por-tion of a cylinder 26, the length' of the cylinder being greater than the diameter of member 23. Each part of circular member I9 is formed with 10 a trunnion 21 having a circular recess adapted to rotatably receive the projecting end of cylinder 26. Member I9 is made in two parts to permit assembly.
Lower plate I6 is provided with brush bristles 15 extending downwardly adjacent to the side edges thereof. Preferably, these bristles are in- K clined outwardly so as to extend slightly beyond the edges of body I3 in order that they will contact a frame, such as shown at II, and reach into the corners of the frame.
If desired, a protective rim 3| may be provided so as to extend downwardly from the body I3 adjacent to the bristles. If desired, this rim may be secured in place by being clamped between plates I5 and I6. The rim terminates short of the free ends of the bristles, but close thereto, so that the air flowing into the nozzle is forced to pass between the bristles close to the surface being cleaned. y
The above described device operates as follows:
Suction conduit 25 is connected to a vacuum cleaner of known design, preferably by means of a flexible hose. If it is desired to clean the window I0, the nozzle I3 is moved back and forth thereover. 'I'he bristles dislodge any dirt adhering to the glass, or any cleaning preparation which has been applied thereto and allowed to dry, and the air passing between the bristles entrains the dirt or cleaning material, which is car- 40 ried through the connection member 23 and the suction conduit 25 to the vacuum cleaner.
Due to the straight sides of the nozzle, it may be moved along the glass against the frame I I and into the corner I2 formed by the frame. Heretofore,A these corners have been difcult to clean due to the fact that it has been impossible to get the nozzle directly into them. Member I 9 being rotatably mounted in the body I3 enables the latter to turn about the hose connection member in the plane of the surface being cleaned. Thus, if the nozzle shown inFig. 1 is being moved upwardly along the window and against the frame III, as soon as the upper point of the nozzle strikes the upper portion of the frame, the nozzle will rotate in a coun-ter-clock-wise direction until the upper side of the nozzle is flush up against the upper portion of the frame. Thereafter, the nozzle may be moved horizontally along this upper portion until the next corner is reached.
Due to the fact that the hose connection member 23 is rotatably mounted on member 20, the suction conduit 25 may be pivoted to any convenient angle with respect to the surface being cleaned.
In the embodiment shown in Fig. 5, the cylinder 26 of hose connection member 23 is rotatably received in a circular member made up of parts 35 and 36, the parts together forming a cylindrical recess to receive member 26. In this embodiment, body member I3 constitutes a single triangular plate provided with a central recess I1, formed with a shoulder 31. Member 36 is formed with a corresponding shoulder. A resilient disc 38 provided with a central opening 39 is secured to members 35 and 36 by means of bolts 40. Disc 38 .bears against the lower face of body member I3 and retains members 35 and 36 in place, the force exerted by the resiliency of plate 38 serving to maintain a substantially airtight joint at shoulder 31 as well as between cylinder 26 and members 35 and 36. Otherwise, the construction of the embodiment shown in this gure may be the same as that described above and the operation is the same.
In Fig. 6, there is shown. an arrangement whereby the nozzle may be employed to apply the cleaning material. Reference character designates the cover of a container for containing the cleaning material. This container and the cover therefor are of the same shape as the nozzle, that is-triangular. Secured within the cover is an absorbent pad 5I made of felt, for instance. The upper central face of cover 50 is formed with a rim 52, which may serve as a handle for removing the cover from its container. The upper edge of rim 52 is preferably provided with a rubber packing member 53 and the' rim is substantially the same height as the bristles 30 and has a diameter greater than that of member I9. Consequently, when the nozzle is placed over cover 50, rim 52 and packing 53 will contact the underside of body I3 and if suction is.
applied, through suction conduit 25 and connection member 23, this suction will serve to retain the cover member 50 in place and without unduly deforming the bristles. Due to the fact that the diameter of rim 52 is greater than that of meniber I9, the rim does not contact member I9 and consequently, the latter may freely rotate within the body member I3. In use, pad 5I is saturated with liquid cleaning material and when moved over the glass by means of the nozzle and conduit 25 connected thereto, the'cleaning material is deposited on the glass. Thus, the cleaning material may be applied to high parts of a window which would otherwise be out of reach from the oor. Thereafter, the vacuum cleaner motor is stopped in order to break the suction acting on the upper side of cover 50 so that the cover may be removed from the nozzle. As soon as the cleaning material has dried, it may be removed by the nozzle.
While I have shown more or less specic embodiments of my invention, itis to be understood that this has been done for Purposes of illustration only and that the scope of my invention is to be limited by the appending claims, viewed in the light of the prior art.
What I claim is:
l. In a suction nozzle, a body member adapted to be disposed parallel to a surface to be cleaned, annular structure rotatably mounted on said body member and rotatable about an axis at right angles to .said surface, said structure including parallel plates formed with aligned semicylindrical recesses having an axis parallel to said surface, a hollow suction conduit connection member having a cylindrical portion rotatably receivable within the cylindrical recesses formed between said plates, and common resilient means urging said plates against saidcylindrical portion and urging said structure against said body member to retain the parts in rotatable but substantially air-tight relationship. y
2. In a suction nozzle, a body member adapted to be disposed parallel to a surface to be cleaned, annular structure rotatably mounted on said body member and rotatable about an axis at right angles to said surface, said structure including parallel plates formed with alignedsemi-cylindrical recesses having an axis parallel to said surface, a hollow suction conduit connection member hav,-
ing a cylindrical portion rotatably receivable within the cylindrical recesses formed betweenv said plates, a pin extending through saidplates, and a spring member engaging said pin and said body member for maintaining said plates in contact with said cylindrical portion and for urging said structure against said body member to retain the parts in rotatable but substantially air-