US1218134A - Vacuum-cleaner. - Google Patents

Description

H. C. TYLER.

VACUUM CLEANER.

APPLICATION FILED OCT. 28, 1915.

1,218,134. Patented Mar. ,1917.

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HUGH C. TYLER, OF COLUMBUS, OHIO.

VACUUM-swarms.

Specification of Letters Patent,

Application filed October 28, 1915. Serial No. 58,314.

forth over the same. As is well known, suction cleaners as now on the market employ an electric motor, it being essential that this motor be operated at a very high rotative speed, in order to produce the correct amount of suction. On the other hand, it is desirable that the brush should not be rotated at an excessive speed, since to do so destroys the nap instead of merely disturbing it to permit the more ready removal of dirt, lint and ravelmgs.

My invention, therefore, resides in a structure of connection between the operating motor and the brush structure, this connection being? of such nature that the rotative speed of the brush may be considerably reduced and at the same time will not alter the appearance of the machine as a whole.

The preferred embodiment of my invention is shown in the accompanying sheet of drawings, in which similar characters of reference designate corresponding parts, and in which Figure 1 is a central vertical section through the suction end of a' vacuum sweeper to which my invention has been applied,

Fig. '2 is a section taken on line 22 of Fig. l and lookingin the direction of the arrows, and,

Fig. 3 is a central longitudinal section through the brush and its supporting structure.

In these drawings, there is shown a motor casing 1 within which the ordinary electric motor is carried and which motor has its armature shaft extended as is shown at 2 to project into the fan casing 3, as shown. In this fan casing and on the'extension 2 there is mounted the usual type of fan 4:, the arrangement being such that rotation of the .fan will cause a suction of air through the centrally disposed opening5 from the suction nozzle designated generally by thereference numeral 6, this suction noz'zle communicating with the fan chamber 3 by means of the communicating passage shown at i. It will be noted that the nozzle (3 provided with bearings 8 at each end, these beari'. serving to rotatably support a, rotata le brush formed in two sections 9 and 10. 'l he center portion of the suction nozzle 6 is also provided with a housing member such as shown at 11, this housing member having its opposite walls provided with transversely arranged and alining holes into-which the oil soaked bearing members .12 are desigiiied to fit. These alining holes are also provided with enlarged concentric sockets 13 into which the ferri'zles it carried by the edgecent ends of the brush sections are designed to fit, These -ferrules are each pre erably made of. frusto-conical form to prevent ram clings, etc, from winding themselves into the bearing portions and each is further pro vided with a square socket to receive the square stud 15 formed on each end of a shaft 16, this shaft also rigidly carryi'. within the hollow. portion of the housing a worm wheel 17. also rotatably supports a worm shaft .18 ar ranged to stand in a substantially vertical direction and being further formed with a worm 19 designed to cooperate with worm wheel 1'7. By this means, a very great reduction in the rotative speed between the shaft 18 and the worm wheel 1'? may be attained and this accomplished without unnec sarily increasing thesize of the arts of the cleaner or in giving it an unsightly appearance. The upper end of the shaft 18 extended a slight distance to receive a pulley or sheave such as is shown at 20 and this pulley 20 is designed to cooperate with similar pulley 21 carried by the lower end of the armature shaft extension 2. These pal leys may or not be of the same size accord ing to the speed reduction between the gears 16 and 19, but both pulleys are preferably of a grooved nature and receive an elasticbelt such as is shown at 22, this belt serving as rotative speed of the fan shaft and the blu sh shaft may lee-attained in a com arative? The housing member 11- the driving connection between the armature simple manner. Rotation of the fan shaft 2 causes rotation of the shaft 18 by means oil the pulleys 20 and 21. and the belt 22. The. speed between these-shafts may be redumd slightly if desired 2y varying the sizes of these pulleys and this rotative movement is then imparted to the brushes by means of,

the connection between the worm wheel 17,

and the worm 19. It will also be noted that 1 each of the brush sections 9 and may be removed without removing the housing structure 11, since the ends of the nozzle are provided with a bearing member 8 held in position by its threaded engagement as is shown. Each of these bu hmgs 1s provided with. a centrally dlsposed-socliet-into which the stud 24 on sine caps or ferrules on the outside ends of the brushes rotatably fit. These brush sections may then be removed by unscrewing their respective bearings 8 and pulling the entire brush through the hole thus formed, the detachable connection formed by the square stud and the square worm shaft, an extension on the motor are t c s a pulley on the lower end'of extension, and a belt between said two pulleys.

in a. vacuum cleaner, the combination with a motor and suction chamber and a nozzle communicating therewith, of a pair er brush sections the adjacentbrush ends befcrmed with polygonal sockets, a housing member in said nozzle, a stub shaft rotatably journaled in said member, said shaft having polygonal shaped ends to fit said sockets, and means for rotatably driving said shaft.

3. In a vacuum cleaner, the combination with a motor, asuction chamber, and a noz-. zle communicating therewith, oil" a brush rotatably journaled in said nozzle, said nozzle having an opening in one end wall large enough to accommodate the passage of such brush therethrough, and a removable bearing member in which the end of said brush is journaled removably secured in said opening.

.l. In a vacuum cleaner, the combination with a motor, a suction chamber and a nozzle communicating therewith, of a housing member rigidly secured in said nozzle, driving gearing in said housing, a brush section located on each side of said member, and a detachable driving connection between each of said sections and said gearing.

5. In a vacuum cleaner, the combination with a motor, a suction chamber and a nozzle communicating therewith, of a pair of brush sections in said nozzle, a bearing sup 7 port in sm'd nozzle between the brush ends, a driving shaft journaled in said support, detachable driving connections between shaft and the brush ends engaging the same, means for rotating said shaft, the, ends of said nozzle being provided with bpenings large enough to accommodate the passage of the respective brush sections therethrough, and removable bearing members secured in said openings into which the ends of said brushes are supported. 1

In testimony whereof I my signature in presence of two witnesses. I

HUGH U. TYLER. lVitnesses:

WALTER E. L. Boon, A. L; PHELPS.

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