US2173718A

US2173718A - Suction nozzle

Info

Publication number: US2173718A
Application number: US168609A
Authority: US
Inventors: Holm-Hansen Osmund
Original assignee: General Electric Co
Current assignee: General Electric Co
Priority date: 1937-10-12
Filing date: 1937-10-12
Publication date: 1939-09-19
Anticipated expiration: 1956-09-19
Also published as: GB509559A

Description

Sept. 19, 1939.

o. HOLM-HANSEN SUCTION NOZZLE Filed Oct. 12, 1937 Inventor: Osmumd Hoirn-Hansen Hls Attorney.

Pam p 1 3 PATENT OFFICE SUCTION NOZZLE Osmnnd Rollin-Hansen,

Stratford, Conn, assignor to General Electric Company, a corporation of New York Application October 12, 1937. Serial No. 168,609

Z-Ciaims.

The present invention relates to suction nozlies of the type adapted to be connected to a source of suction through a tube which in ad dition serves to move the suction nozzle over the 3 surface being cleaned.

The object oi my invention is to provide an improved construction and arrangement in suction nozzles of this type, and for a consideration of what I believe to be novel and my ino vention, attention is directed to the following description and the claims appended thereto.

In the accompanying drawing, Fig. 1 is a front elevation, partly broken away. of a suction nozzle embodying my invention; Fig. 2 is an end view ll of the nozzle; Fig. 3 is a sectional view taken on line 3-3 01. Fig. 1; Fig. (is a sectional view taken on line 4-4 of Fig. 1; Fig. 5 is an exploded view of the nozzle, the parts being in section; Fig. 6 is a perspective view Mom of the supports which pivotally connects the suction nozzle and the tube connected to a separate source of suction; and 7 is a diagrammatic view illustrating .the use of the suction nozzle.

Referring to the drawing, there is shown a 5 auction nozzle I having lips I and I on which are moimted surface contacting shoes I and 5. The end walls I of the suction nozzle terminate above the plane of the shoes 4 and 5 providing an opening I (Fig. 1) through which air' flows n across the surface being cleaned into the suction nozzle. The air flowing through the openings I is efl'ective in removing surface litter. At the center oi the nozzle is a horizontal wall 8 having upturned ends 9 providing opposed cir- |5 cular es ll facing lengthwise of the suction nqzzle. The passages ll serve as the discharge outlet of the suction nozzle. On the lower side of the wall 8 is a rib II which extends substantially to the plane of the'shoes I and m I and contacts surface being cleaned. The rib ii is particularly effective in case one end of the suction nozzle projects beyond the edge of a rug while the other end is on the rug. In this condition, the projecting end of the suction nozu zle is spaced a considerable distance above the lloor, and accordingly, thereisvery little suction in the portion of the nozzle between the rib II and the projecting end of the nozzle and there is a relatively large air flow through this part 50 of the home. Due to the rib II, the suction is -not decreased throughoutithe full length of the suction nozzle. The large air flow through the projecting part of the nozzle results in a relatively high resistance which limits the flow "5 through this part oithe-nozzle. This results in a pressure differential between the discharge outlet and the portion of the nozzle on the rug between the rib I l and the end of the nozzle which is effective in creating a suction over this part of the nozzle. It is therefore apparent that g the cleaning eilect of the nozzle is not as greatly decreased by accidental movement of an end of the nozzle on the edge of'the rug. To obtain greater advantage of this construction the top walls of the suction nozzle are proportioned to 10 provide for a smooth .flow of air from the nozzle lips to the discharge outlet under normal conditions when the full length of the nozzle rests 'on the surface being cleaned. That is, the section of the nozzle decreased toward the ends of the nozzle. With this design, there is obviously a greater restriction of air flow through the end of the nozzle which projects beyond the edge of the rug.

Connected to the openings in of the suction 2o suction nomle by supports having ends I! pivg5 otally engaging the ends l3 and having portions l6 fitting over the outside walls of the suction nozzle and secured thereto, for example, by screws ll. These supports provide a convenient arrangement for connecting the tube to the suction nozzle. The portions is may be iltted over the ends l3 and the gaskets ll assembled in place. The assembly may then be inserted in place inthe suction nozzle and secured therein by' the screws II.

In the use of the suction nozzle, a rigid tube I8 is fitted within the tube 12 and connected by means of a flexible hose l9 to a source of suction.- The tube l8 serves as a handle by means of which the suction nozzle is moved over the 40 surface being cleaned. The pivotal connection to the suction nozzle permits the handle. to be lowered close to the floor when cleaning under furniture. As shown in Fig. 3, the rear portion' of the suction nozzle above the wall 8 is cut away to permit the tube I! to be moved to a substantially horizontal position.

' What I claim as new and desire tosecure by Letters Patent of the United States is:

1. In a vacuum cleaner, a suction nozzle having top walls and side walls terminating in surface contacting lips, a-long'itudinally extending wall below the top walls and above the nozzle ,lips, portions on said longitudinally extending wall and said top walls cooperating to provide a 5g pair of discharge outlets below said top walls and facing opposite ends of the suction nozzle, a wall on the lower side of said longitudinally extending wall extending substantially to the plane of the nozzle lips and dividing the interior of the nozzle into a pair of passages spaced apart lengthwise of the nozzle and leading from the nozzle lips to said discharge outlets, and a tube having a pair of openings respectively connected to said outlets for connecting the passages to a source of suction and for moving the nozzle over the surface being cleaned.

2. In a vacuum cleaner, a suction nozzle having downwardly disposed lips, walls of said nozzle defining a recess in the top thereof above the nozzle lips with opposed discharge=out1ets in the end walls of the recess facing opposite ends of the nozzle, a suction tube having forked ends fitting in and spaced from the bottom wall of said recess, the ends thereof facing said discharge outlets, and a support having a. portion extending in said recess and pivotally supporting one of said forked ends and having a portion extending over and fixed on the adjacent part of the suction nozzle.

' OSMUND HOW-HANSEN.