US2038424A - Nozzle for vacuum cleaners - Google Patents

Description

April 21, 1936. L.. ELL

NOZZLE FOR VACUUM CLEANERS Filed May 16, 1934 NIH l INENTOR BY@- ,g-TORNEY i3 uw( if Patented Apr. 251, 1936 UNITED STATES NOZZLE FOR VACUUM CLEANERS Lars Ell, Stockholm, Sweden, assignor to Electrolux Corporation, Dover, Del., a corporation of Delaware Application May 16, 1934, Serial No. '125,866 In Germany July 18, 1933 My invention relates to brush tools for vacuum l cleaners and more particularly to that type of tool known as a radiator tool, though such tool has other uses than for cleaning radiators.

The invention will be understood from the following description of a preferred form of the invention taken in conjunction with the accompanying drawing forming a part of this specification and of which: l Fig. 1 shows a known type of vacuum cleaner to which is attached a tool embodying the invention;

Fig. 2 is a longitudinal sectional View taken on the line II-II of Fig. 3 showing a preferred form l5 of the invention;

Fig. 3 is a side view of a preferred form of radiator tool; and

Fig. 4 is a section taken on the line IV-IV of Fig. 3.

20 My new radiator tool is applicable to any kind of vacuum cleaner but I have shown it attached to the hose II of a vacuum cleaner of the kind having a cleaner unit Ill adapted to be -pulled on the floor by means of the hose. On thesuction 25 end -of the hose is a flattened tubular member I6 of known construction which may have an oblique opening as shown in Fig. 3 at 30. Member I6 is preferably made of metal so that it will not distort. Mounted on the member I6 is a brush tool 30 or radiator tool or nozzle designated generally by numeral I2. Tool I2 includes attened side members I3 vwhich have projections I4 on the sides which are crimped together to form the shank portion fitted over the tool I6. The sides may be 35 separated at 3| to provide resiliency for clamping the tool I2 onto the tool I6 in order to readily assemble the parts. The side members I3 are formed with rounded parts I8 which are generally circular and the circumferential periphery 40 of which extend for the greater part of a complete circle. The diameter of the circle is considerably wider than the width of the shank portion. The outer edges of the parts I8 are bent or flanged obliquely outwardly at I I. The outside edges of the flanges I1 are preferably in the same plane as the flat portions of the side members I3. Inside the parts I8 are pieces I9 which are arcuate in shape and which are tightly se- 50 cured to the parts I8 in any desired manner as bytongues 20 pressed out of the pieces I9 and extending through slots in the side members I3. 'I'he pieces I9 are flanged at 2l.' 'I'he flanges 2| likewise extend obliquely outwardly from the gen- 55 eral path of flow formed within the tool, which is longitudinally thereof in the embodiment disclosed.

Between the flanges I1 and 2l are rows ofl bristles 23, one on each side. The pieces I9 as well as the parts I8 are separated to form an end nozzle opening 22 which extends more than half the circumference. Thebristles 23 on either side of theopening 22 extend obliquely outwardly in opposite sense from the plane of the opening. In order to prevent closing of the opening, inasmuch as the tool is preferably made of light and somewhat bendable metal, knobs orprojections 25 may be'provided in the pieces I9 adapted to press against the complementary piece and prey vent reduction of the nozzle opening beyond a given amount. 'I'he bristles may be mounted ontwisted wire 24 which is clamped between the flanges I'l and 2l by pressing these anges together. 'I'he wire may be passed through slots in the members I3 and I9 and bent over to hold 20 the same in place or other fastening means may be employed. The parts I1 and 2l form oblique grooves for the bristle rows. Preferably,auxiliary openings 26 are provided in the side parts I8 by aperturing the side members and also the pieces I9 should they overlap at the places where it is desired to have the auxiliary openings.

With the arrangement shown it is impossible for the bristles to be bent into the suction openings and hinder the inflow of air and dirt. It is 30 advantageous to make the circular part I8 wider than the shank of the tool in order to clean in back of radiators. This permits the bristles to extend laterally and also provides a large suction Opening.

What I claim is:

1. A brush tool for vacuum cleaners including complementary side members defining a passage- Way for flow of air and providing a slot communicating with said passageway, said side mem- 40 bers having flanges diverging obliquely from adjacent said slot, and a row of bristles on each side of said slot vsecured outside of said flanges.

2. A brush tool for vacuum cleaners including complementary iiattened side members forming a path of flow in a general given direction, said side members having flanges oblique to said path of flow, pieces attached to said side members'and forming grooves with said flanges, bristles held in said grooves obliquely to said path of ow, and

side members having flanges oblique to laid path of flow, pieces attached to said side members and cooperating with said iiangestoi'orm grooves. bristlesheldinsaidgroovesobliquelytosaid path oi' now, said members and pieces forming a, suction opening between said obliquely held bristles, and said members being apertured to provide auxiliary openings.

4. A brush. tool for vacuum cleaners including complementary flattened side members secured together to forma hollow shank for ow of air and having separated end portions 'substantially circular in shape and provided with a circumferential suction opening communicating with cagan insaidgroovmsddbristlesbeing'mpporteds obiiqlyofthecircumicrentialopeningbysaid from adjacent said opening, and rows of bristles 1o

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