US2538464A

US2538464A - Detachable mounting for vacuum cleaner nozzles with power-driven brush

Info

Publication number: US2538464A
Application number: US619862A
Authority: US
Inventors: Charles H Macfarland
Original assignee: Scott and Fetzer Co
Current assignee: Scott Fetzer Co
Priority date: 1945-10-02
Filing date: 1945-10-02
Publication date: 1951-01-16
Anticipated expiration: 1968-01-16
Also published as: GB620771A

Description

16, 1951 c. H. M FARLAND DETACHABLE MOUNTING FOR VACUUM CLEANER NOZZLES WITH POWER DRIVEN BRUSH Fild Oct. 2, 1945 2 Sheets-Sheet l IIII ll INVENTOR. Charls H. MaeFarZaJuZ ATTORNEYS 2 c. H. M FARLAND 2,538,464 DETACHABLE MOUNTING FOR VACUUM CLEANER 2 Sheets-Sheet 2 'NOZZLES WITH POWER DRIVEN BRUSH Filed Oct. 2, 1945 .I IIIIIIIII Jan. 16, 1951 INVENTOR. Charles H. MacFarland r Z: 6? ATTORNEY Patented Jan. 16, 1951 UNITED sTA'r-Es PATENT DFFICSE -DETACHABLE IMOUNTING FOR VACUUM CLEANER 'NQZZLES WITH POWER DRIVEN BRUSH Charles HaMacFarland; Cleveland, flliio assignnr to The Scott & Eetzer Gompany, Gleveland, .Ohio, a corporation of Ohio Application number '2, 1945, Serial No. 619,862

the-nozzle thatis movable from a position :c'lear of thebelt into engagement with the :belt' and to :a position overlying the outer end of the fan shaft so as to support the'upper loop of the belt clear of the .fan shaft so that the .belt .is supported wholly iby'the nozzle in :a position :such that the fan shaft is -free to move eutgof :or into the upper belt loop as the nozzleis detached from 'or attached to the fan casing and that is movable from its belt supporting position to reengage :the

belt with the fan shaft. I

With the above :and other objects in view, the

--Claims. (01. $-$90) 12 hasxa forward end-portion 3 formed to provide a belt pulley.

- .The fan easing I is mounted upon a suitable carriage :9 that is provided with supporting wheels m. A nozzle H is detachably secured :to the fancasingii loeing provided withaehorizon-tal portion 12 which receives the fan shaft 6 :and

which has :an end portion that fits within the opening 3. The nozzle Jill has slotted lugs ill-on the-under side of the portion I2 that engage a horizontal pin 14a carriedby the fanoasing. The nozzle I I is also provided on the upper side thereof with a laterally projecting flange 15 which :bears against the outer face of the front wall 2 ofthe tan casingand which is engaged by a clamping member lea 'to'secure the nozzle to the :fan "casing. The nozzle :1 I has a downwardly fi aring inlet portion 16 at the outer end of the horizontal :portion llwhich has an inclined front invention may be said to comprise the vacuum cleaner as illustrated in-the accompanying drawings, hereinafter described and particularly :set forth .in the appended claims, together with such variations and modifications thereof as will be apparent to one skilled in the :art to which the invention vpertains.

Reference should be had to the accompanying drawings forming a part of this specification, in which:

Figure :1 is a front elevation of the vacuum cleaner embodying the invention;

.Fig. 2 is a :central vertical section throughthe nozzle .of the cleaner;

Fi 3 is a vertical central :s'ection'through the nozzle detached from the fan casing showing :the brush driving belt supported within thedetached nozzle in position to receive the fan heltupon :attachment of the nozzle to the fan :casing;

Fig. -41-is a sideelevation :of the fan casing with the nozzle detached, aportion of the leasing being broken away to show the front wall "in vertical section and hose attachment which may vreplace the nozzle being shown in dotted lines. :and

:Fig. .5 is a rear elevation of the detached nozzle.

Thepresent inventionis applied to a vacuum cleaner :of a conventional type that includes a fan casing l which has Ia vertical front wall 2 provided with a central inlet opening 3.. The :ian casing also has a tangential-outlet :4 anda fanlfi is mounted therein on a shaft 5 that may be.

driven by a-rnotor (not shown) in a' suitableghousinc 1 attached to itheian casing. The ran-shaft 6 projects forwardly through'the oper-iirrg :3 and wall I! that overlies the forward end of the fan shaft 6. Within the widened inlet portion [6 of the nozzle 1:! there is mounted a tubular brush shaft 118 which .is disposed at right angles to the fan shaft 6 and supported at its ends by suitable bearings I9. The brush shaft I8 is driven by means of a belt 21'! which is 'rtwisted to provide an upper loop engaging the pulley portion 8 of the shaft Band alower lo'opwhich extends around the tubular shaft I8. The tubular shaft [8 is larger than the pulley 8 and :is disposed with its axis :forwardly of the-pulley B so that one runof the :belt 21!} is inclined forwardly and downwardly from the pulley B to the front side of the shaft 18 whi-le'theopposite run of the belt is in substantial'ly vertical position.

The front wall I! of the nozzle has a round opening 24 in front of the forward end of the shaft 6 "anida rotatable closure member v.22 is mounted in this opening. The closure member 22 has an outer flange 23 that bears against the outer face of the wall I?! and a suitable handle'i l which may be integral with the :fiange23 is poovidedto f acilitate th-eturning of the closure nem' her. The flange 231's provided with laterally proj-ecting

shoulders

25 and 26 which are engageable with astop pin :2"! on the wall I to limit themargin.oi i'he opening 21. v 7

A suitable arm 2-9 which "may be formedintegrally with the plate 28 -*-projects inwardlyfrom the :rotatably mounted closure member- 22 and is adapted to be moved into and out of engagement with the belt 2E. As shown in Figs. 1 and 2, the closure member 22 turns about an axis which is disposed at an angle to the axis of the fan shaft 6 and the arm 29 is so positioned on the member 22 that when the shoulder 25 is engaged with the pin 2'1 the arm 29 is positioned laterally of and entirely clear of the belt 28. Upon turning movement of the member 22 in a counter-clockwise direction from the position shown in Fig. 1, the arm 29 is swung inwardly past the rear run of the belt 29 into engagement with the inner side of the forward run of the belt, as illustrated in the dotted and full lines in Fig. 2. Further movement of the closure member 22 to bring the shoulder 26 into engagement with the stop pin 2? swings the arm 28 to the position shown in Figs. 3 and 5 where it closely said fan shaft, a belt having an upper loop receiving said fan shaft and a lower loop receiving said brush shaft, a'member rotatably adjustable in the nozzle and mountedbeyond the end of said path upon adjustment of said member from a overlies the pulley portion 3 of the fan shaft t. I

As shown in Fig. 5, the arm 29'has a belt engaging portion 39 of arcuate externally convex form which is substantially concentric with the shaft 6 when the arm is in its uppermost position, so that when the member 22 is turned to engage the shoulder 2%; with the stop pin 2? and position the arm 29 as shown in Figs. 3 and 5, the upper loop of the belt 26 is supported clear of the fan shaft and the fan shaft is free to move axiallyout of the belt loop when the nozzle H is detached from the fan casing. The arm 29 also serves to support the belt while the nozzle is detached from the fan casing in a position such that the-forward end of the fan shaft will freely enter the loop of the belt when the nozzle l l is again attached to the fan casing.

When the brush carrying nozzle l l is detached from the fan casing a suitable fitting 3i to which a flexible hose may be attached may be attached to the fan casing in the same manner as the nozzle 1 l as shown in Fig. 4.

3 It is to beunderstood that variations and modifications ofthe specific devices herein shown and described for purposes of illustration may be made without departing from the spirit of the invention.

- What I claim is:

1. In a vacuum cleaner, a fan casing having an inlet, a suction nozzle detachably connected to the fan casing inlet, said nozzle having an inlet at its lower end and a passage from its inlet to said fan casing inlet, a fan shaft projecting into the nozzle passage, a brush shaft mounted in the nozzle below and transverse to said fan shaft, a belt having an upper loop receiving said fan shaft and a lower loop receiving said brush shaft, a member adjustable in the nozzle beyond the end of said fan shaft, and an arm carried by said member and projecting into said passage and toward the fan casing inlet, said arm being movable into engagement with the interior of the fan belt and to a position closely overlying said fan shaft to support the upper loop of the belt on the nozzle and clear of the fan shaft to permit the outer end of the fan shaft to be withdrawn from the belt upon detachment of the'nozzle from the fan casing and to be entered into the upper loop of the belt when the nozzle is again attached to said fan casing. l 2. In a vacuum cleaner, a fan casing having an inlet, a suction nozzle detachably connected to the fan casinginlet, said nozzle having an inlet at its lower end and apassage from its. inlet tosaid fan casinginlet, a fan shaft projecting :into the nozzle. passage, .a brush shaft mounted in the nozzle below and'transverse to position at one side of said belt to a position in engagement with the interior of the belt above said fan shaft to support the upper loop of the belt on the nozzle and clear of the fan shaft to 7 permit the outer end of the fan shaft to be withdrawn from the belt upon detachment of the nozzle from the fan casing and to be entered into the upper loop of the belt when the nozzle is again attached to said fan casing.

3. In a vacuum cleaner having a fan casing with an inlet in its front wall, a suction nozzle detachably connected to the inlet, said nozzle having an inlet at its lower end and a passage from said inlet to the fan casing inlet, a fan shaft extending forwardly through the fan casing inlet into the nozzle passage, a brush shaft in the nozzle transverse to and below the fan shaft and a driving belt having a lower loop in which the brush shaft is received and an upper ioop in which the outer end of the fan shaft is received, a manually operable member mounted for angular'adjustment on the nozzle outwardly of the fan shaft and having an arm movable into and out of engagement with the interior of the upper loop of said belt and to a position directly over the outer end of the fan shaft to disconnect the upper loop of the belt from the fan shaft and support the same wholly on the nozzle and clear of the fan shaft for movement with the nozzleso that the fan shaft may move out of and into the upper loop of the belt as the nozzle is detached from or attached to the fan casing.

l. In-a vacuum cleaner having a fan casing with an inlet in its front wall, a suctionlnozzle detachably connected to said inlet, said nozzle having an inlet at its'lower end and being formed to provide a passage from its inlet to said fan casing inlet, a fan shaft extending forwardly through the fan casing inletinto the nozzle, a brush shaft in the nozzle transverse to and below the fan shaft and a driving belt having a lower loop in which the brush shaft is received and an upper loop in which the outer end of the fan shaft is received, a manually operable member mounted upon said nozzle beyond the end of the fan shaft to turn about an axis inclined with respect to the fan shaft axis, said member-having an arm projecting into the nozzle passage and movable in an arcuate path from a position laterally clear of the belt into engagement with the interior of the upper loop of the belt and upwardly to a position over the' outer end of the fan'shaft where it supports the upper loop of the'belt clear of the fan shaft. V

' 5.'The combination with a vacuum cleaner having a fan casing with an inlet in its front wall, a suction nozzle detachably connected to the inlet and having afront wall provided with a' circular'opening, a fan shaft extending'for wardly through the inlet into the nozzle with its outer end within the nozzle adjacent said opening, a brush shaft in thenozzle transverse toand below the fan shaft and a driving belt having a' lower loop receiving the brush shaft and an upper loop receiving said fan shaft, of a closure member rotatably mounted in said opening, and an inwardly projecting belt supporting arm carried by said closure member, said member being movable angularly from a position Where said arm is positioned laterally of the belt into engagement with the interior of the upper loop of the belt and to a position where said arm overlies said fan shaft and supports the upper loop of the belt on the nozzle and clear of said shaft.

CHARLES H. MACFARLAND.

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

Number 6 UNITED STATES PATENTS Name Date Staples Mar. 2, 1920 Mellenthin Dec. 13, 1921 Nelson Aug. 17, 1926 Spanel Sept. 3, 1929 Clements Mar. 7, 1933 Adams July 10, 1934 White Sept. 28, 1937 Frame July 18, 1939 Coss June 22, 1943 Carlson May 8, 1945