US1404888A - Nozzle or nozzle block for vacuum cleaners - Google Patents

Description

I. J. OWEN. NOZZLE OR NOZZLE BLOCK FOR VACUUM CLEANERS.

APPLICATION FILED APR. 26. I920.

1,404,888, Patented Jan. 31, 1922.

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IRA J. OWEN, OF GRAND RAPIDS, MICHIGAN, ASSIGNOR TO BISSELL CARPET SWEEPER COMPANY, OF GRAND RAPIDS, MICHIGAN.

NOZZLE OR NOZZLE BLOCK FOR VACUUM CLEANERS.

Application filed April 26, 1920.

To all whom it may concern:

Be it known that I, IRA J. OWEN, a citizen of the United States, residing at Grand Rapids, in the county of Kent and State of Michigan, have invented certain new and useful Improvements in Nozzles or Nozzle Blocks for Vacuum Cleaners, of which the following is a specification.

This invention relates to improvements in nozzles or nozzle blocks for vacuum cleaners, the same being especially adapted for the nozzle of the Bissell Superba type of vacuum cleaners, although the nozzle is very well adapted for other styles.

The object of the invention is to provide a construction of nozzle in which the flow of air will be at the maximum and unobstructed in order to carry the dust most effectively into the dust bag or receptacle.

Further objects and objects relating to details of construction and operation will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention for use on an ordinary style of hand-propelled vacuum cleaner is illustrated in the accompanying drawing forming a part of this specification, in which:

Fig. I is a longitudinal detail central sectional view through the central part of the nozzle block and front end portion of a hand-propelled vacuum cleaner of the sweeper type, taken on line 11 of Fig. ll.

Fig. II is a detail sectional view taken on line 22 of Fig. I, showing the outline of the air passage through the nozzle block.

In the drawing the sectional views are taken looking in the direction of the little arrows at the ends of the section lines, and similar reference characters refer to similar parts throughout the several views.

Considering the numbered parts of the drawing, 1 is the front end portion of a hand-propelled vacuum cleaner of the sweeper type, such as the Bissell Superba. 2 is the dust ba enclosed within the same. \Vheels 3, and tide dust pan 4 are shown in their usual relation. The nozzle block gen Specification of Letters latent.

Patented Jan. 31, 1922.

Serial No. 376,675.

erally is indicated at 5 and is made up of a central core block 6 having a front of thin board or veneer 7 and a back of a thin board or veneer 8. The shoe or contact part 9 is at the lower end, being built up in a well known way and preferably shod with a smooth piece of metal 9 and having an elongated slot, as is common practice with such structures. This shoe is adjusted at an elevation of three thirty-seconds (3/32) of an inch above the floor or carpet level.

The air passage 10 leading through the dust receptacle or bag is broad at the mouth 11 and is contracted toward the central portion of the block at 12 and expanded at 13, and discharged into the dust bag 2 under the curved surface 14, through the rear plate 8 at 15, as clearly appears in Fi I. It will thus be seen that the nozzle b ock utilizes curved surfaces to permit the free flow of the air and that it conforms in principle substantially to a Venturi tube. The result is a very great increase of efficiency because of the rapid flow of the air, which is especially effective in carrying the dust to the dust bag or box.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent:

1. A nozzle for vacuum cleaners having an elongated intake mouth, the inner walls of said nozzle being curved to define a passage having an intermediate contracted portion of smaller cross sectional area than said mouth, and an expanded discharge portion to secure a Venturl tube action.

2. A nozzle for vacuum cleaners having an elongated intake mouth disposed above the floor level and out of contact therewith to permit free entry of air to the mouth in proximity to the floor, the inner walls of said nozzle being curved to define a passage having an intermediate contracted portion of smaller cross sectional area than said month, and an expanded discharge portion to secure a Venturi tube action.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

IRA J. OWEN. [1 s.] Vi tnesses LITELLA G. GREENFIELD. MARGARET L. GLASGOW.

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