US2913756A

US2913756A - Suction nozzle with removable brush means

Info

Publication number: US2913756A
Application number: US647247A
Authority: US
Inventors: Charles H Macfarland
Original assignee: Scott and Fetzer Co
Current assignee: Scott Fetzer Co
Priority date: 1957-03-20
Filing date: 1957-03-20
Publication date: 1959-11-24
Anticipated expiration: 1976-11-24

Description

Nov. 24, 1959 v v c. H. MacFARLAND 2,913,756

VsucfrIoN NozzLE wrm REMOVABLE BRUSH MEANS Filed March 20, 1957 4 I n" 1:'. .'4 137.3 4 4 3 1-7 o ATTORNEYS ,rates Patent O sUCTIoN NozzLE WITH REMovABLE BRUSH MEANS Charles H. MacFarland, Rocky River, Ohio, as signorto The vScott & Fetzer Company, Cleveland, Ohio, a corporationof Ohio Application March 20, 19,57, Serial No. v,647,247 3 claims. (cl. 15-395) 'This invention relates Vto vacuum cleaner nozzles and more particularly to sol-called crevice tools and the vlike 'which are provided with a narrow elongated body intended for use in vacuum cleaning of relatively restricted spaces.

tion nozzles which are provided with removable brush4 More particularly the invention relates to sucassociated with thebrush structure. A,drawback Vof this .structure isfthat .the nozzle-receiving Vbrush Vstructure `makes the`tool, as Va` whole, rather bulky thus negativing the usual inherent advantages .jpfthe provision of a .at

narrow? nozzle or crevice tool. f

These `devices of the-spriorart have'tbeenimprovedfupon by the provisionl of brush-mounting lclip-.on structure in combination with crevice tools provided with recesses"to'rreceive andanchorithe: clip-on "structure However, devices ofthis type t have been relatively com- "n object of the inventionto' provideuemovable brush structure `Which-is simpler and less expensive to manufacture .than any .similar tlevicesrof` the prior arttion iS to Ap rQvide vrr..1. t11e.r .abject ci .the `rrresent in Sutia nozzleherins aremqrable .rush means where :the brash,ueans.camprises -a .sinslestlrrup-Shaned .mem-

ber which is arranged in a conformation to function both as the brush bristle mount and also the clip-on attaching meansj l lAnother object of the invention is to provide a nozzle with removable brush structure which can be very readily and conveniently removed and inserted in the nozzle as desired and which is neatly and compactly Varranged so as to interfere with the vacuum intake to a minimum extent.

According to 4the present invention the removable brush structure includes a single nozzle stirrup member which is so formed asto comprise a central bridging portion extending transversely between twoarm portions, with the central bridging portion being joined to the arm portions by connecting portions which are bulged outwardly from lthe axial extent of the arm portions and then turn inwardly to the bridging portion.

A specic embodiment of the invention` is described in detail below and is illustrated in the accompanying drawings. This embodiment is set forth merely by way of example. In the drawings:

Figure l is a side elevation of a suction nozzle proplex inthat they require theassembly of a clip-on stirrup element towhi'ch is addeda brushws/upporting element..

i ing of metallic or resinous material.

lice.

vided with removable brush means in accordance the invention. VFigure 2 is a partially broken away view on an enlarged scale taken from plane 2 2 in Figure l. 'm

Figure 3 is a side elevation, partially in cross-section, of the structure shown in Figure 2.

Figure 4 is a section taken on the plane of line 4-4 `in Figure 3.

`Figure 5 is a view of the stirrup and brush structure seen in the previous figures in its expanded or removed condition.` .I 4

Figure 6 is a view similar to Figure 3 showing the vacuum nozzle structure with the stirrup and brush means removed therefrom. Y

Figure 7 is afragmentary v iew of an alternative form of one detail of the invention. v

In Figure l there is shown a vacuummozzle consist- The nozzle 1Q) lhas a flattened tubular head 11 and a roundtubular shank V12 which is adapted to receive or be connected to a vacuum cleaner hose or tube handle or hollow handle 13. The nozzle will be seen to comprise a flattened hollow body formed with spaced-

apart side walls

14 and 15 and substantially

smaller edge walls

16 and 17 and'terminating vin the end vopening 18. The

edge walls

16 and 17 of the nozzle have longitudinal grooves `2l) -formed therein adjacent the opening 18. VThe grooves 2i? are of a smaller width than the width between the spaced-apart side walls 14y and 15, thereby defining shoulders 21 on either side of each of the grooves 20.

VThere is also provided a resilient stirrup member generally indicated by the lreference numeral 25. This stirrup member comprises spaced apart armsg26 and 217 `and; arbridging portionA 28 transverse to the arms '26 and l27. The Iarms are joined to the bridging portion'by `connectingportions 29.and-30. shown-inthe `draw!- Vfings,the connecting portions bulge outwardly-from the supported brush elements being well known. `Bristles 3*1 arepositioned'or fsupported onthe bridging portion 28 ,andalso on the connecting portions 29Vv and 30. @The `free tir-inner ends of the arms26 and 27 may have positioned-thereon projections such as the solder balls 33 andf-34 which maybe formed by dipping the `ends of the armsf26" and 27 intof-a pool'of molten'soldei,

vllPV-hen-the stirrup member 251is'insertedinto the nozzle 10, as indicated in Figure 3, the

arms

26 and 27 are positioned over the associated grooves 20 and are spring- Vurged away from each other by the resiliency of the stirrup member which tends to assume the conformation illustrated in Figure 5. The

arms

26 and 27 iit within the grooves 20 to' eiect a keying interengagement with the grooves. Thus, the stirrup 25 is held against rotation relative to the nozzle. The

solder balls

33 and 34 firmly but releasably hold the stirrup member in the nozzle by engaging the ends of the shoulders 21. The outer

bulging connecting portions

29 and 30 engage the rim of the nozzle to limit inward movement of the arms into the nozzle. The stirrup structure is firmly and securely held in place Vas just described but it can be readily removed by pushing inwardly on the connecting por-

tions

29 and 30 until the

solder balls

33 and 34 clear the ends of the shoulders 21. and then pulling the stirrup structure outwardly from the nozzle. The stirrup structure can be re-inserted into the nozzle by manually urging the

arms

26 and 27 together until the

solder balls

33 and 34 can be placed against the shoulders 21 whereupon the stirrup member may be thrust into the tool until the outwardly bulging

solderballs

33 and 34 drop over the ends of the v shoulders 21.

Projecting means other than the

solder balls

33 and 34 may be provided. For example, the stirrup member may be provided at the ends of its arms with sleeves, such as the sleeve 35 .shown in Figure 7. The sleeves 35 may have flanges 36 which coact with the ends of the shoulders 21 in much the same manner as do the

solder balls

33 and 34. The sleeves 35 are fastened to the arms of the stirrup member by being crimped thereon.

In some instances it may be preferred to omit one of :spaced-apart side walls and substantially smaller edge -walls and terminating in an end opening, the edge walls of the nozzle having longitudinal grooves formed therein adjacent the end opening of the nozzle, the grooves being of smaller width than the width between the spacedapart side walls to define shoulders on either side of each of the grooves which shoulders terminate at a location 'spaced from the end opening of the nozzle, a resilient 'stirrup member comprising spaced-apart arms insertable through said end opening'and a bridging portion transverse to the arms, the arms being joined to the bridging .portion by connecting portions which bulge outwardly -frorn the axial extent of the arms and then turn inwardly :to the bridging portion, brush bristles supported on the v.bridging portion and the connecting portions, at least one of'the arms having projecting means extending ra- -dially' therefrom'adjacent its free end, the arms being wpositioned over the grooves when the stirrup is positioned ,in the nozzle and being spring-urged away from each other and toward keying interengagement with said of the arms being engaged with the termination of the shoulders defined atthe sides of the groove associated `with said atleast one of the arms to firmly but releasably hold the stirrup member in the nozzle, the outwardly bulging connecting portions of the stirrup member engaging the rim of the nozzle to limit inward movement of'the arms into the nozzle.

2. A suction nozzle having removable brush means,

-grooves along at least a Aportion of their length to key .the stirrup member against rotation relative to the nozzle, .said projecting means associated with said at least one the nozzle having a attened hollow body formed with spaced-apart side walls and substantially smaller edge walls and terminating in an end opening, the edge walls of the nozzle having longitudinal grooves formed therein at least adjacent the opening of the nozzle, the grooves being of smaller width than the width between the spacedapart side walls, a resilient stirrup member comprising spaced-apart arms insertable through said end opening and a bridging'portion transverse to the arms, the arms being joined to the bridging portion by connecting portions which bulge outwardly from the axial extents of the arms and then turn inwardly to the bridging portion, brush bristles supported on the bridging portion and the connecting portions, the arms being positioned over the grooves when the stirrup is positioned in the nozzle and being spring-urged away from each other and toward keying interengagement with said grooves along at least a portion of their length to releasably hold the stirrup member in the nozzle and key it against twisting relative to the nozzle, the outwardly bulging connecting portions of the stirrup member engaging the rim of the nozzle to limit inward movement of the arms into the nozzle.

3. A suction nozzle having removable brush means, the nozzle having a flattened hollow body formed with spaced-apart side walls and substantially smaller edge walls and terminating in an end opening, the edge walls of the nozzle having longitudinal grooves formed therein at least adjacent the opening of the nozzle, the grooves being of smaller width than the width between the spacedapart side walls, a resilient stirrup member comprising spaced-apart arms insertable through said end opening and a bridging portion transverse to the arms, the arms being joined to the bridging portion by connecting portions, brush bristles supported on the bridging portion and the connecting portions, the arms being positioned over the grooves when the stirrup is positioned in the nozzle and being spring-urged away from each other and toward keying interengagement with said grooves along at least a portion of their length to releasably hold the stirrup member in the nozzle and key it against twisting relative to the nozzle.

References Cited in the file of this patent UNITED STATES PATENTS 1,819,157 Fitter Aug. 18, 1931 2,659,924 Forsberg Nov. 24, 1953 FOREIGN PATENTS 46,152 Denmark Sept. 5, 1932 511,102 Canada May 22, 1955 544,870 Great Britain Apr. 30, 1942 v 598,549 France Sept. 29, 1925