US1067813A - Vacuum-cleaner. - Google Patents

Description

, /f'1//l maar 655 2 H. H. HARROLD. VACUUM CLEANER. APPLIGATION FILED Nov. 1e, 1912,

Patented July 22, 1913.

HARMON H. HAERL, Oi? CANLL IVER, ELECTMC COMPANY, Cil NEW PTlLtDE OI-Ilt, ASSGNOB. 310 THE WISEHARBOLD LPHUA., OHI, A CORPORATION 0F OHIO.

VACUU'IMI-CLEANER.

Specification of Letters atcnt.

Application filed November 16, 1912. Serial No. 731,710.

To all whom @T may concern Be ity-known that 1 Harmon lil. l-lannonn, a citizen or the United States, and a resident of Canal Dover., county ot Tuscarawas, and. State of (Thio7 have invented a new and use ful improvement in Vacuum-Cleaners, of which the following' is a specification, the principle of the invention beingf herein enplained and the best inode in which lt have contemplated applying,r that principle, so as to distinguish it from other inventions.

My invention relates to a vacuum cleaner of the power driven electrical motor type.

It is the object of the invention to provide such a machine which may be readily taken apart to facilitate cleaning and repairing.

l have designed a construction which permits of the disposition of the motor in a separate chamber which is readily detach able from the main body of the machine.

(lther features ot my invention include the mounting oit the brush in the intake nozzle and a removable head to which will be attached a dust collecting; receptacle.

The annexed drawing and the following` y description s et forth in detail certain mech side of the frame.

anisin embodying' the inventions such disclosed means constituting, however, but. one

-of various mechanical terms in which the principle of the invention, may be used.

ln said annexed drawing: Figure 1 is a, vertical centrat section through my device; Fig. 2 is a plan View of the same; Fig. 3 is a section. on the line 3-3, Fig. 1; Fig. Li is a partial section on the line 44, Fig. Q; Fig. 5 is a view showing a detail of construction, being a section of the line of Fig. 2.

The machine consists of the main trame 1 provided with an intake nozzle 2 directed downwardly toward the surface to be cleaned. The machine is mounted upon rollers 3 which are suitably attached to the trame work. A handle i is attached to a yoke 5, each arm of which is attached to one In the intake nozzle 2 there is mounted a brush 6 upon pins 7 which are attached to downwardly extcnding bosses 8 upon the nozzle. Between the brush and the upper part ot the nozzle casing are disposed resilient springs 9 which tend to force the brush downwardly against the surface to be cleaned. At either end oi the casingr are guides 10 which maintain the brush in a given position and cause it to reciprocate at right. angles to the surface to be passed over.

The intake chamber extends from the noz.- Zle rearwardly through a chamber 11, into a fan chamber 1Q.. The rear end of the latter chamber is formed circular and is provided with two pins 13 mounted upon small ears 111-. A ring, or detachable head 15, is provided with slot-ted extensions 16 similar to the ears 14 on the casing, and adapted to engage the pins 18. Small knurled nuts 17 may be engaged with the pins, thus retaining the detachable head in position. To the head is attached the dust receptacle or bag; 1S by means of'a cord 19. ln the chamber 12 there is mounted a tan 20 which is engaged by a threaded shaft 21 attached to and driven by the motor 22,l the latter being suitably mounted in the -bellshaped casing The latter chamber is attached to the main frame by means of a number ot' screws 2i which may be readily removed, thus allowinfhlr the complete removal of the moto-r and its casing.

Bushings 25 are provided in the partition between the main it'rame and the motor casings for the shaft 21. A hole 26 is bored in the main `trarne and is adapted to be engaged by an oil cup 27 in order to lubricate 'the shaft Q1. In the motor casing there is a second hole 28 receiving an oil cup Q9 for the purpose of lubricating.; the upper end of the ni'otor shaft 30. By thus providing a separate casing' for the motor, it is possible to entirely prevent the entrance of dirt into the motor which would. tend to injure it and shorten its life, and also to quickly and readily remove the motor casing.

Cast integrally with the motor casingr is a boss 31 surrounding an aperture in which there is placed a switch holder 32 provided with a. switch 33. By thus placing the switch upon the motor casing the operator may readily close or open the circuit at the machine without being obliged to go to the wall switch trom which the current is taken through the wire 35. The wire 35 is held in eyelets 86 mounted upon the handle 4:. The dust-collecting bag,r will have its unattached end supported from the handle by any suitable detachable means. Attached to the outer sides of the main frame are such disks 37, preferably formed integrally with the frame as shown, such disks being provided with recesses 38 adapted to receive a smal.l

`Patented July 22, i913.

rie

\ merely contact the sui-.face

projection 39 on the inner side of each arm of the yoke 5. This yoke is somewhat resilient and these projections may therefore be sprung into corresponding recesses on either side of the frame, thus assisting the opargtor to hold the handle at a desired elevntion.

The simplicity of my device wiil be apparent. The motor may be readily removed. by means of the four Screws, While the dnstcollecting bag may be readily removed either lfrom the head to which it is attached., or the latter may be removed from the main frame. lhen the motor is removed the 'fan is disengaged from the same by merely nnscrewing the shaft 2l. The motor ctectually protected from dust, which is necessary in this type of apparatus,'l hy means of the separating partition between the motor casing and the main frame.

Greatly increased etiiciency is obtained in my apparatus by the use o1 a brush nionnted in the manner described. The suction produced by the fan is suilicient to draw up all "dust on the surface to be cleaned, but to thoroughly remove the dust which heconies embedded in thick rugs and carpets, it is necessary to rnb or brush the material. This action has been accomplished in, Sonie machines by a rotating' brneh. The objections to rotatable brushes; are that if they and. roll inthe direction of the machines movement they exert no eiiectual brushing action, that is, they do not bend the threads in the carpet and do not stir un the dust embedded therein. By rotating the brush in a direct-ion op- 'posite to the inzicliines movement, a goed cleaning action is secured, but yto drive the brush it must be geared to the wheels or motor, causing increased complietion and Weight. My in'iproved brush mounting obviates both these objectione. The brush is not power-driven in the sense oit being,"v

Loeigeie connected to any rotating member, but when the machine is moved over.' a rug against the nap, the brush is momentarily caught 'or impeded, causing it to trai-'el np- Werdly. The springs torce it down and this action is continuous with moi-'ement of the machine. The dust embedded in the carpet is stirred up and removed hy the suction mechanism.

claim: l

l. In a vacuum cleaner, the combination ot a casingI provided with an intakenozzle adapted to be passed over the surface. to be cleaned; vertically disposed guides mounted in said casing and extending through a disance substantially equal to the height of said intake nozzle; a plurality of projections `on the inner Wall of Said nozzle, said projections extending into the path of movement of Said brush; pins mounted in said projections and slidehly engaging said hrusli;and coiled springs disposedabout seid projections between the inner Wall of seid nozzle and said brush.

2. In a Vacuum cleaner, the combination ot a casing provided With a narrow elon' gated intake nozzle adaptedto be passed over the surface to be clea eglverticnlly disposed guides mounted at' either vend of said casing and extending through :i distance substantially equai to the height of said intake nozzle; a pluraiity of projeo tions extending into the path of movement oi seid brush; eine mounted in said projections and slidably engaging said brush;

`coiled springs disposed about said projections between the inner Wall of seid noz zleend said brush.

Signed by me this ith day of November, lQ,

HARMON H. HRROLD. ittested by* Vil'. d. 1Wien, BERT lloonnnn.

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