US1778935A - Suction nozzle for vacuum cleaners - Google Patents

Description

Oct. 21, 1930. H CRANMER 1,778,935

SUCTION NOZZLE FOR VACUUM CLEANERS Original Filed April 21, 1928 2 Sheets-Sheet l INVENTOR: fiffifiaf/f [Ki l/M5;

BY %-M ATTORNE Get. 21, 1930.

G. H. CRANMER SUCTION NOZZLE FOR VACUUM CLEANERS Original Filed April 21 1928 2 Sheets-Sheet 2 p........1"mam" UNITED STATES PATENT OFFICE OEORGE H. OBANMER, OF PHILADELPHIA, PENNSYLVANIA,

* ELECTRIC APPLIANCE CORPORATION, 01E- TOLEDO, OHIO, A CORPORATION OI DELL,

WARE

Asa axon 'ro AIR-WAY sucrron NOZZLE non vacuum 01.2mm Application filed April 21, 1928 serial No. 271,878. Renewed January 22, 1080.

This invention relates to a Suction nozzle for vacuum cleaners in contradistinctlon to that type of nozzle which has arranged therein a rotary brush, an osclllatlng brush, or

equivalent moving medium.

The leading object of this invention is to provide a nozzle which not only permits increase of suction during the to and fro movement of a vacuum cleaner, but by reason of the free, resilient-like arrangement of the bottom of the suction nozzle with the upper part thereof, vertical movement is ma1ntained for responding to inequalities in carpets and rugs and to automatically respond to diflerent thicknesses of carpets and rugs.

A further object is to provide a brush wh ch is non-rotating and non-oscillating and whlch is detachable with respect to the nozzle 1n question.

Other and further objects reside in the provision of general details of construction and in the arrangement and combination of parts as will hereinafter more fully appear.

The invention consists of the novel construction hereinafter described and finally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection with-the accompanying drawings forming part hereof, and in which:

Fig. 1, is a view in perspective of a vacuum cleaner provided with a suction nozzle embodying the invention.

Fig. 2, is-a view in front elevation of the nozzle shown in Fig. 1, with certain parts broken away for clearer illustration.

Fig. 3, is a view of the underside of F1g. 2.

Fig. 4, is an edge of a spring hereinafter described.

Fig. 5, is an end view of Fig. 2 with a roller removed.

Fig. 6, is a' similar view with the brush of the invention attached.

Fig. 7, is a view in cross section taken upon the line 7-7 of Fig. 2.

Fig. 8, is a view in section taken upon the line 8-8 of Fig.6 and illustrating a detail of roller construction.

Fig. 9, is a view in section takenupon the I line 9-9 of Fig. 6.

Fig. 10, is a detail view hereinafter referred to.

Fig. 11, is a view in plan illustrating a detail of the brush construction.

For the purpose of illustrating my invention, I have shown in the accompanying drawings one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

In the drawings, the reference numeral 1 designates the main part of the metal suction nozzle of a vacuum cleaner of any desired type and which nozzle is fixed with respect to the suction pipe 2 leading to the motor 3, and its bag 4 carried by the handle 5, see Fig. 1. The reference numeral 6 designatesthe under part of the metal nozzle, which is resiliently maintained and which is vertically movablewith respect to the part 1. This feature is best seen in F igs: 5, 6, and 7, wherein theunder face of part 1 is provided with a pair of vertically arranged elongated grooves 7 which extend along both sides of the nozzle part 1, see Fig. 7. Adapted to cooperatively engage these grooves are vertical flanges 8 carried by the part 6, a spring 9, see Figs. 4 and 7, being interposed between the bottom of each groove and the top of each flange. Thus, inequalities in the carpet or rug surface to be cleaned permits the part 6 vertically and automatically to move with res ect to the part 1.

xtending along the part 6 are a plurality of apertures 10 inclined in an opposed out- Ward direction, as shown in Figs. 7 and 10. These apertures 10 admit atmospheric air to the chamber 11 of the part 1 so that in. addition to air passing up through the main 'opening 12 in the bottom. of the nozzle part 6, see Figs. 7 and 10, additional air may ingress first downwardly through the apertures 10 and then up into the chamber 11, through chamber 11, as can be best seen in Fig. 7. Thus, in the to and fro movement of the vacuum cleaner upon the rollers 13, air naturally is sucked up through the opening 12 and chamber 11 in addition to that sucked through the apertures 10. However, if the carpet or the rug is a little thick or the nap is a trifle long, and the bottom of member 6 1S flush upon the top of the carpet or rug, air can still ingress through the apertures 10. It is essential that a constant vacuum be maintained in the cleaner. Frequently when the mouth of the cleaner is closely hugging a rug or carpet the suction of atmospheric air is momentarily stopped or at least weakened. By having the apertures 10, a complete and continuous suction of air is maintained at all times, and this serves to increase or accentuate the suction of air through the cleaner to the bag 4 thus maintaining a constant suction of air. Each end of the part 6 carries a roller 13, and these ends are each provided with a fixed pin screw threaded at 14 into said ends. Loosely mounted upon the unthreaded ends 15 of each of said pins is a sleeve 16. Upon these sleeves 16 are pushed the rollers 13, thus avoiding clamping mediums as screws and the like. The sleeves 15 while free to rotate upon the said pins are maintained in place by the collars 17 which have fixed relation with the parts 15 ofsaid pins. Fixed to each end of the part 1, as by screw 18, is a plate 19 vertically slotted at 20 so that the plates may have free vertical movement with respect to the pins 14. Each end of the part 6 is also vertically slotted at 21, see Fig. 10, so that the part 6 may have free vertical movement with res ect to a pin 14, see Fig. 9.

In ad ition to the side grooves 7 and the side flanges 8, each end of member 1 is provided with an end roove 22, and the end flanges 23-24, sec ig. 9. Thus, the sides and ends of the members 1 and 6 each are properly arranged for vertical sliding engaggllilaent.

en desirable to provide in addition to the special suction arrangement a brushing device, use may be made of the part shown in Figs. 6 and 11. It is comprised of a frame 25 having. arranged therein bristles 26. Extended from the frame 25 are side wings 26 forked at 27 see Fig. 6, to engage over the parts 16, the iorked ends of which are adapted to be removably fitted between the flanges 28. No securing mediums, as screws or the like, are employed because each plate 19 is provided with a vertical rib 28 with which the indented parts 29 of the side wings coopcrate. The reference numeral 30 designates the space between the parts 1 and 6.

I am aware that the invention may be embodied in other specific forms without departin from the spirit or essential attributes e5 thereo and I therefore desire the present embodim'ent to be considered in all respects as illustrative and not restrictive, reference being had to the appended claims rather than to the foregoing description to indicate the scope of the invention.

What I claim is:

1. A vacuum cleaner structure comprising a two-part nozzle casing consisting of an upper, relatively fixed member having a suction chamber therein, said member being mounted upon rollers and a lower part vertically movable with respect to said upper member having a main inlet opening therein, and auxiliary air inlet ports arranged upon opposite sides of said movable part and in communication with said suction chamber for permitting additional air to enter said suction chamber.

2. A vacuum cleaner structure comprising a two-part nozzle consisting of an upper, relatively fixed member having a suction chamber herein, said member being mounted upon rollers and a lower part vertically movable with respect to said upper member having a main inlet opening therein, and auxiliary air inlet ports including a series of aligned, inclined ports arranged upon opposite sides of said movable part and in communication with said suction chamber for tion chamber therein, said. member being.

mounted upon rollers and a lower part vertically movable with respect to said upper member having a main inlet opening therein, said movable parts being interconnected at the ends of said relatively fixed member to prevent disconnection in vertical movement, and auxiliary air inlet ports arranged upon opposite sides of said movable part and in communication with said suction chamber for permitting additional air to enter said suction chamber.

4. A vacuum-cleaner structure comprising a two-part nozzle casing consisting of an upper, relatively fixed member having a suction chamber therein, said member being mounted upon rollers, said rollers being forced upon studs carried by said upper member without the employment of fastening mediums, a lower part vertically movable with respect to said upper member having a main inlet opening therein, and auxiliary air inlet ports arranged upon oppoing, longitudinal grooves in said casing on opposite sides of said slot, a slotted floor contacting member having longitudinal flanges adapted to be engaged by said grooves, resilient means interposed betweer said flanges and the bottom of said grooves, and means associated with said floor contacting inemher for movably securing the same to said casing.

6. In a vacuum cleaner suction nozzle, the combination with an upper casing adapted to be secured to an air intake conduit, an elongated slot in the lower face of said casing, longitudinal grooves in said casing on opposite sides of said slot, a slotted floor contacting member having longitudinal flanges adapted to be engaged by said grooves, resilient means interposed between said flanges and the bottom of said grooves, auxiliary air inlet ports arranged on opposite sides of said floor contacting members and in communication With the interior thereof, and means associated with said floor contacting member for movably securing the same to said casing.

GEORGE H. CRANMER.

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