US2544489A

US2544489A - Cleaning attachment for sweeper nozzles

Info

Publication number: US2544489A
Application number: US11071A
Authority: US
Inventors: Silas F Crabb
Original assignee: Individual
Current assignee: Individual
Priority date: 1948-02-26
Filing date: 1948-02-26
Publication date: 1951-03-06
Anticipated expiration: 1968-03-06

Description

March 6, 1951 s. F. cRABB 2,544,489

CLEANING ATTACHMENT FOR swEEPER NozzLEs Filed Feb. 26, 1948 Patented Mar. 6, 1951 l CLEANING ATT@HMEN'IFOIY SWEEPERF N ZZLE S t Silas VFQCrabhpDes Moines,'Iowa ApplicationiFbruary26, 19458,' SrialsNo.11,071 4 Claims..- (Cl. 15f-371) n The principal. object fof. myiinvention is .to pro@` A furthe-robject of myiinvention is to provideavacuum cleaneratt'achment that employs relatively inexpensive v-bri-ishesg- A still further object of this*inventionV is to i provide y a bru'shfvacuum cleaner attachment that is of few-rparts; leconomical in ymanufactureandI These andother obj ects will be apparent to` those skilled-inthe art.

My invention consists in theconstruction, ar-

rangement,r and ccmbination-'of` the various parts g 20 ofv the device, whereby Athe objects contemplated are attained as hereinafter `more fully; setforth,

pointed out inmy claimde-and Iillustratedin the accompanying drawings, in which:

Fig. l is a-:bottom' viewof my attachmenti Fig: 2`fis-a backside View"of"th`e attachment` with sections cut awaytol more fully illustrate its constructionf Fig. 3 l`is av cross sectionalV view' 'of the device taken online 3"-3 of FigZ;

Fig'. 4 is a perspective view'of'th'e` brush holdingr and operating lever.Ay f

Figf'is 4a perspectiveview of the outer endof the'brushlevertaken on line 5 5 of Fig. 1..

The use of brusheson the suction head or nozzle of vacuum4 cleaners" is old in the art. The chief objection to this vtypeof nozzlehead however is that the brushes are not readily detachable for replacement and the-'usual procedure is gto;taken the nozzle to a repair establishment* Thi's "subi jects the user .to conside'rable 'expensefannoyance and time.. I have overcomesuchrproblems byproviding =a nozzle that carries. av quickly releasable brush.

Referringrto the drawingsl haveusedthe nu# meral I togenerally designate 'the nozzle'. head: Such attachments haveeane'airean'd dirt "sl'otenJ- trance II .-cornmunicating v With'zfthe rearwardly extendingoutlet pipe portion I2.:A Asis wellknown this portion I2 connects with the usual xture tubes that extend tothe vacuui'ncleaner proper. The nozzle head shown `isi-in general similar to most: such heads now in generabllse. Thexmain diierence however, is that I form an inverted elongated trough I3 in the head and which is located ltothe realt .and parallel with. the .air.anddirt .slot II fas-shown: in Fig. 1.v This Vtrough -l3 is rectangularmin.crosssection.-and hasva sinuous`V extending ,leafspring Y. I4` resting fin its. bottom.-

The numeral.; I5 designates therelongated base portion vofmy brush .and extending from which are thebrush Abristlesi. This base portion-ot. the brush is also rectangularwinicrossesectionv and is designedl to vlooselyrest within theiinver'tedtrough l I3,f with. the bristlesv extending-.frommthe-f trough and` below and toftl'ierearfofY the air and dirt slot I I, as shown in Fig. 3..- Bythisfarrangementithe top` surface of the brush will engagethe sprl-ng l I 4 and that member; willyieldingly :force thebrush downwardly?r relative-1 tothe;` nozzle f proper; The brush'isihowever prevented "'from being` completely expelled* from the inverted' troughzbyca brushicontrol` .lever I'i -which I will This lever isrinf the form of `a spring bar rotatably secured near its centerrfto'y now-= describe.

the back side of the nozzle head by a capscrew or 1ike-I8asshown'in=Fig;.2. The-numeral I 9 designates a linger element on vthe inner end of thebar lever I'l whichextends below" the brush to -limit its downward'movement. To prevent side`- movement of the brush al notchll is formed on* theunder side of the brush and which is 'engaged by the'nger ISas shown'inFig. 1.., On the left' back sideof the nozzleare Wells 2 I. The numeral i 22 Vdesignates a lug=on the underfree Tend of the' lever Il, capable ',of. selectively'entering 'audien gagingany; of'fthe .wells 2|. The numeral` 23 designates a'handle on the outer free end of the lever Il; Tofadjust` the brush it 'is merely necessaryitorgrasp'the handle l23, pull theouter end of thespringf bar .lever 22 1 clears" the .wel1s",

the lever against "undesir'edmovement In Fig. 1, `th'eh'outer 'end of 4the'leverfis in a'downward theinv'ertedfftrough"I'Sf When the .brush is `in such'an' upward 'positi'cnrwithhr the trough; it.

vs/"illb'e-'outv of the lway and not effective as a clean;

ing-agent. By movingvthe 'outer endv of the lever upwardly to alocked position as shown'inFig 2.,v

the inner Zend of thelever will'be lowered, thereby` permittingthesprin'g to yieldinglylmovethe brush to' an eiective' lowered position Withinthe trough. a

To'remove a brush it `is'...merely'. necessaryltoaunlock' and raise the free end bf the lever to a posi- Il rearwardly until the-lug and thenlower'or raise the free Lend of 5the'leveruntil the ylugv is adjacent' the desired well; Uponfrel'ease of fthe handle the lug--willenterr the adjacent well, therebyl locking tion shown by dotted lines in Fig. 2, and the brush will drop completely from the nozzle head. To replace a brush, the same is manually placed within the inverted trough and the free end of the brush lever l1 lowered to the desired position and then locked by causing the lug 22 to enter the proper well. While the brush lever regulates the downward movement of the brush, the brush m-ay always move upwardly a slight distance against the action of its spring. This yieldable downward pressure on the brush when it is in effective position assures its proper functioning during the cleaning process. The lever l1 gives complete control of the brush, i. e. for placing it in an inoperative elevated position, for permitting the brush to assume a lowered operative position, and for permitting the complete removal of the brush from the nozzle head. These types of brush nozzles wear out brushes rapidly. However with my device it is no trouble to remove the brush and replace it with a new one. Furthermore, a brush may be readily removed for cleaning or turning around for uniform wear. For most effective brush action, I form the brush guiding and holding trough so that it extends downwardly and forwardly. This causes the bristles of the brush to extend downwardly and forwardly in a row just to the rear of the air and dirt slot of the nozzle. My complete nozzle consists of only four main parts, i. e., the nozzle head proper, the brush, spring and brush lever.

Some changes may be made in the construction land arrangement of my vacuum cleaner attachment without departing from the real spirit and purpose of my invention, and it is my intention to cover by my claims, any modified forms of structure or use of mechanical equivalents which may be reasonably included within their scope.

I claim:

l. A vacuum cleaner' nozzle head having an elongated air and dirt inlet slot opening, an elongated inverted trough directly to the rear of said slot opening, a spring means in said inverted trough, an elongated brush capable of extending loosely into said inverted trough and yieldingly held downwardly by said spring means, a bar pivoted to said nozzle head, a notch in the bottom center of said brush, a notch in the bottom rear center wall portion of said inverted trough and registering with the notch in said brush, a nger portion on one end of said bar, normally engaging the notch in said brush and capable of extending through the notch in said inverted trough; said bar capable of being swung to a position where said linger is free of said notch of said brush and said notch of said inverted trough, and a means for holding said bar in different positions of its swinging movement for adjustably effecting vertical adjustment of the brush.

2. A vacuum cleaner nozzle head having an elongated air and dirt inlet slot opening, an elongated inverted trough directly to the rear of said slot opening, a spring means in said inverted trough, an elongated brush capable of extending loosely into said inverted trough and yieldingly held downwardly by said spring means. a spring bar pivoted at itsfcenter to said nozzle head, a notch in the bottom center of said brush, a notch in the bottom center portion of the rear Wall of said inverted trough and registering with the notch in said brush, a finger on one end of said bar normally engaging the notch in said brush and capable of extending through the notch in said inverted trough; said bar capable of being swung to a position where said iinger is free of said notch in said brush and said notch of said inverted trough, a grippable member on the other end of said bar, wells in said nozzle head, and a lug on said spring bar capable of selectively entering and engaging each of said wells for adjustably effecting vertical adjustment of the brush.

3. A vacuum cleaner nozzle head having an elongated air and dirt inlet slot opening, an elongated inverted trough directly to the rear of said slot opening, a spring means in said inverted trough, an elongated brush capable of extending loosely into said inverted trough and yieldingly held downwardly by said spring means, a spring bar pivoted at its center to said nozzle head, a notch in the bottom center portion of the rear wall of said inverted trough, a finger on one end of said bar normally extending under said brush and capable of extending through the said notch in said inverted trough; said bar capable of being swung to a position where said nger is free of said brush and said notch in said inverted trough, a grippable member on the other end of said bar, wells in said nozzle head, and a lug on said spring bar capable of selectively entering and engaging each of said wells for adjustably eiecting vertical adjustment of the brush.

4. A vacuum cleaner nozzle head having an elongated air and dirt inlet slot opening, an elongated inverted trough directly to the rear of said slot opening, a spring means in said inverted trough, an elongated brush capable of extending loosely into said inverted trough and yieldingly held downwardly by said spring means, a spring bar pivoted at its center to said nozzle head, a notch in the bottom center portion of the rear wall of said inverted trough, a finger on one end of said bar normally extending under said brush and capable of extending through the said notch in said inverted trough; said bar capable of being swung to a position where said iinger is free of said brush and said notch in said inverted trough, a grippable member on the other end of said bar, and a contacting portion on said bar adjacent said grippable member capable of engaging said nozzle head for holding said bar in various positions of its swinging movement for adjustably eiecting vertical adjustment of the brush.

SILAS F. CRABB.

REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 993,767 Du Laney May 30, 1911 1,348,585 Rosenneld Aug. 3, 1920 1,753,799 Martinet Apr. 8, 1930 1,879,710 Reddig Sept. 27, 1932 2,197,641 Hohn-Hansen- Apr. 16, 1940 2,310,554 Seyfried Feb. 9, 1943 2,335,448l Ross l Nov. 30, 1943 FOREIGN PATENTS Number Country Date 6,208 Australia Sept. 6, 1927