US2658228A - Vacuum cleaner nozzle - Google Patents

Description

Nov. l0, 1953 Filed Aprii 22. 195o C. E. M EYERHOEFER VACUUM CLEANER NOZZLE- 2 Sheets-Sheen 1 IN V EN TOR.

TTORNEYS Nov. 10, 1953 c. E. MEYl-:RHOEFER 2,658,228

VACUUM CLEANER NozzLE Filed April 22 195o 2 sheets-sheer 2 IN VEN TOR.

Patented Nov. 10, 1953 VACUUM CLEANER NOZZLE Carl E. Meyerhoefer, Brooklyn, N. Y., assignor to Lewyt Corporation, Brooklyn, N. Y., a corporation of New York Application April 22, 1950, Serial No. 157,530

3 Claims. l

This invention relates to a structurally and functionally improved nozzle for use with a vacuum cleaner or similar suction-producing apparatus.

It is an object of the invention to provide a unit of this type and which will be particularly useful when employed in industrial associations and in other instances where relatively large surfaces are present. While the present unit may traverse and clean oor coverings, it is especially intended to be employed on bare wooden floors, concrete, linoleum, and similar surfaces especially where large areas are involved.

A further object is that of furnishing a vacuum cleaner nozzle which may be readily manipulated by the operator and which will cooperate with a surface to be cleaned with such efficiency that particles of matter will be loosened and completely removed from the surface even although the nozzle is traversed over the deck for a minimum amount of time instead of being repeatedly shifted back and forth across an area to be cleaned.

Another object is that of providing a mechanism of this type which will embody relatively few parts each individually simple and rugged in construction, these parts being capable of ready assemblage and when so assembled fur--` nishing a compact `article operating over long periods of time with freedom from all dilculties.

With these and other objects in mind reference is had to the attached sheets of drawings illustrating one practical embodiment of the invention and in which:

Fig. 1 is a front view of the nozzle;

Fig. 2 is a bottom plan view thereof;

Fig. 3 is a view similar to Fig. 2, but showing the sole or glider plate removed;

Fig. 4. is a transverse sectional view taken along the lines 4 4 and in the direction of the arrows as indicated in Fig. 1;

Fig. 5 is a sectional view taken along the lines 5 5 and in the direction of the arrows as in dicated in Fig. 4;

Fig. 6 is a fragmentary sectional view taken along the lines `6-6 and in the direction of the arrows as also indicated in Fig. 4; and

Fig. 7 is a transverse sectional view taken along the lines 'I-'I and in the direction of the arrows as indicated in Fig. 2.

In these views the numeral I0 indicates the body of the nozzle which is preferably formed of a relatively light weight metal and which is hollow. In accordance with conventional construction, this body embraces front and rear walls spaced from each other. These walls are yconnected adjacent their ends by side wall portions. All of these parts are preferably integral with each other and extend upwardly to furnish a housing or cover portion. Thus, only the lower edges of these walls dene an opening which functions as the suction mouth for the nozzle. Extending rearwardly and upwardly from this body is an outlet hub II by means of which it may be connected to a suction-producing apparatus (not shown). Such connection will, in the usual manner, ordinarily include a hose, wand section, etc. In accordance with conventional practice a strip I2 of yielding material may extend around body IIJ and provide a cushion or bumper so that the nozzle will not come into damaging contact with walls, articles of furniture, etc.

Extending longitudinally of the nozzle body and substantially centrally thereof is a partition I3. This partition may be integral with body IIJ. The central portion of the partition is bowed or extended forwardly as indicated at I3. This part is provided at a point preferably centrally of the ends of partition I3 and thus substantially in line with the outlet II. A second partition I4 is provided to the rear of and spaced from partition I3. The partition is spaced forwardly from the inner face of the rear nozzle wall. Likewise, partition I3 in addition to being spaced forwardly of partition I4 is spaced from the inner face of the forward wall of the nozzle body. Thus, a well portion is furnished between the nozzle body and partition I4 which fportion may be occupied by a brush, squeegee or similar unit as will be hereinafter described. As is apparent, space also exists between the front surface of body I0 and partition I3. Extending across this space to provide supports and to lrigidify the nozzle are a series of transverse webs or partitions I5. Certain of these partitions are disposed more closely to each other than to the remaining partitions of the assembly. The pairs of partitions thus provided mount opposed retaining portion I6. The outermost of these portions are disposed immediately in advance of partitions I3. The central pair of portions I6 are preferably provided adjacent the forward wall or surface of body I0. Rollers I'I are arranged between the pairs of portions I6 and have their shafts I8 riding in bearing contact with the receiving portions I6. The height of the partitions I5 mounting the bearing portions I6 and the diameter of the rollers Il is such that formed with openings 22 through which rollers;

I1 may extend. It is also formed with an opening 23 in line with the forwardly extending portion I3 of partition I3. To eachsideof opening 23 plate I9 is formed with agseriesof "relatively:

narrow and long slots 24. Each of these slots is framed or defined by a downwardly extending bead or lip 25. A similar lip portion 26 'defines or frames the opening 23. The front andJear edges of plate I9 are preferably upturned as ini,

dicatedY at 21. The length of partition. I3.is such that itwillengage theinnenface-of the plate whenthe latterisproperlymounted upon the.. Therefore under such cony body .of` the nozzle. ditions,` the compartments of the nozzleare-isolated from each -otherinsofar as a flow of air from-one .to another is concerned.

Withinthe rea-r compartment or wellof the nozzle-between -the-rear face of bodyV I0 and partition I4 a brush mayA be disposed.. This brushpreferably includes a row of bristles or tuftsj secured to a backing strip 29. extending retaining'members 30 are mounted adjacent `the-.ends of; body.l0 in line with-the rear wallportion and these elements overlap the ends;- o1 strip 29. Accordingly, -the latter; will not shift from-a positlonrwithin: the well. This brush'is normallyretalned in projected. position as shownv especially in Figs. 4 and 5 :byconveniently emplaying-a spring 3| which'may haveits central portion-formed with an opening through which aretaining pin- 32 passes in-linewitnthe lower surface of the outlet -hub Il.

Inwardly` spring bear Aagainst the upperedge of stripA 29 to each side of .the centerof thelatter to achieve the desired-result.. At thistime it isto be -under- A stood thatv while in most finstances-aibrush will bevassociated withthe nozzle andextend into4 therearwell, portionofthe same,V a -rubber squeegee-or metal 1 scraping `plate mightr vbie-thus positioned. In such latter event, it is again pre-- ferred that the-squeegee or blade have an outline'similarto that of the brush. assembly. so-` thatv it'may be properly retained against detach- Y ment. from thev nozzle although .such detachment U nmybeapossibleof achievement by .anoperator upon removing the retaining members 30.

Withr the -parts assembled it is preferredthat. the sole or glider plate I!! have the main surface-. otitslower face spaced from the surface to4 be` The lips.or beads 25 and 426 should extendA downwardly. so that.. they clear `the supporting surface engagedby With the. i brush. or itsequivalent fully projecteditwouldiextend.. z, approximately 1/4 below thezsurface of the plate., Therefore., undery normal conditions, the .brushor squeegee will contact the surface being cleaned... withsubstantial force and will serve to support the rear part of the nozzle.l Under all circumstances thisbrush or itsr equivalent will prevent.- particles from freely passing under the nozzle..A

Using a nozzle of this type-and-withthe parts i proportioned generally as 4indicatedf;it-fwill befound that particles of loose material approachedcleaned by approximately 115'?.

rollers .l IY approximately 3153.

4 by the forward end of the nozzle will be drawn with considerable velocity towards the slots 24 and the opening 23. The latter will, of course, permit of the passage of larger particles than can pass through slots 24. The velocity of movement of the particles is caused because of the close spacing of the sole plate from the surface being treated and especiallyithe lip or bead portionsv 25 andl 26. The full force of the suction developed by the apparatus connected to the nozzle acts on the relatively small openings 23 and 24. Thus, particles will move rearwardly of the nozzle and will strike against the forward face ofthe brush ,or other-member. From this face they willreboundlforwardly so as to be substantially vin line-with the opening 23 or slots 24 throughwhich they will pass to the dust collecting apparatus.

Particles vadhering to the surface being cleaned will be freed from such surface either by contact withzthe brush or the element-substitutedtherefor. Where necessary the operator and may cause that surface to be scrubbed which will loosenthe particles of matter adhering thereto. The nozzle may be effectively employed even where moisture is present upon that surface and especially ifa squeegeeor scraper blade is inassociation with the nozzle. Due to the high velocityfof. ilow there will be-no'danger ofvmoist particles. adhering to the nozzle surfaces.. Also particles which still remain adherent to the sur face being cleaned vwill,.of course, be loosened vbythe actionof any squeegeeorblade which might -be employed.

Thus, among others, the several objects of .the invention as specifically aforenotedare achieved.;V

Obviously numerous changes in construction and rearrangement of the parts might be resorted to=l without departing from'the spirit of the invention asdened by the claims.

I claim:

1. A vacuum cleaner nozzleincludlng in-coin-y binationspaced front and rear walls connected to each .other adjacent theirupper and side edges tof provide a nozzle. body having. a downwardly `opening suctiommouth, a pair :of .partitions spaced" from i. eachother andfalso fromf said .front and rear.;walls,.-said partitions being disposed germer--r allyI parallertoeachfother andto said rear wall and within the mouth of said body. webs extend-r.Y

ingsbetweengthe foremost; partition and the inner rface yoi? said f: front. wall,1pairsv of retaining portions; supportedv Aby said webs, rotatable units carried by said portions and .extending below the nozzle mouth, an outlet:hub carried Aby said body and communicating iwith the fspace betweensaid partitions, anda "floor-contacting and cleaning element supported by said body at apoint betweeri-.therearmost of saidwpartitions and said rearwall.

2. A vacuum cleanerfnozzle including in com- Y bination spaced frontr and .rear walls connected to eachother adiacenttheir upper. and side edges to provide a nozzle body having a downwardly: opening suction mouth, a pair of partitions spaced from eachother and also from said-front andrrear walls, said-partitions vbeing disposed `gener-l ally.- parallel to. each other and-to said rearswalls and .withinithemouth of-said body, webs extend-l ing between the foremost partition andthe in-y ner face of said front wall.. pairs of retaining portions supported-by. said webs, rotatabieunits carried byusaid portions and--extending-belowthe-A nozzle mouth, an outlet Ihubcarried bysaid 'body7 will,` ofcourse, flowwater over the surface to be cleaned and communicating with the space between said partitions, a floor-contacting and cleaning element supported by said body at a point between the rearmost of said partitions and said rear wall, a glider plate in contact with the lower edges of said partitions and extending rearwardly from said front wall, said plate being formed with openings through which said units extend and further openings in line with the space between said partitions and through which latter openings air is to pass.

3. A vacuum cleaner nozzle including in combination spaced front and rear walls connected to each other adjacent their upper and side edges to provide a nozzle body having a downwardly opening suction mouth, a pair of partitions spaced from each other and also from said front and rear walls, said partitions being disposed generally parallel to each other and to said rear wall and within the mouth of said body, webs extending between the foremost partition and the inner face of said front wall, pairs of retaining portions supported by said webs, rotatable units carried by said portions and extending below the nozzle mouth, an outlet hub carried by said body and communicating with the space between said partitions, a door-contacting and cleaning element supported by said body at a point between the rearmost of said partitions and said rear wall, one of said partitions being formed with an extended portion in line with said hub, a glider plate extending rearwardly from said front wall in contact with and across said partitions, said plate being secured to said body and formed with openings through which said units extend, further relatively long and narrow openings in line with the space between said partitions and an enlarged opening in line with said hub and the extended portion of said partition.

CARL E. MEYERHOEFER.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 1,033,016 Hope July 16, 1912 1,629,801 Lindgren May 24, 1927 1,646,088 Green Oct. 18, 1927 1,787,537 Leahy Jan. 6, 1931 1,976,998 Kirby Oct. 16, 1934 2,157,077 Kroenlein May 2, 1939 2,274,560 Ott Feb. 24, 1942 2,310,554 Seyfried Feb. 9, 1943 2,322,804 Kinsella June 29, 1943 2,536,443 Hammell Jan. 2, 1951 FOREIGN PATENTS Number Country Date 291,790 Great Britain Aug. 23, 1928

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