US1145112A - Vacuum cleaning-machine. - Google Patents

Description

G. BRAND.

VACUUM CLEANING MACHINE.

APPLICATION FILED JULY 24. 914.

1, 145, 1 1 2. Patented July 6, 1915.

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GEORGE BRAND, OF BROOKLYN, NEW YORK, ASSIGNOB TO THE BRAND lVIANUFAG- TUBING- CORPORATION, A CORPORATION NEW YORK.

VACUUM CLEANING-MACHINE.

Specification of Letters Patent.

Patented July 6, 1915.

Application filed July 24, 1914. Serial No. 852,887.

To all whom it may concern:

Be it known that I, GEORGE BRAND, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Vacuum Cleaning- Machines, of which the following is a specifica- I tion.

This invention relates to vacuum cleaning machines of the portable type having a suction creating bellows and a traction wheel for operating the bellows, and relates more particularly to an improved traction wheel and the connection between the wheel and the bellows.

An object of this invention is to provide a yielding traction wheel and a yielding connection between the wheel and the bellows for absorbing the shock incident to the conversion of the rotary into the reciprocating motion of the parts; for insuring the smooth and noiseless running of the machine and for reducing the jar upon the entire machine during use to thus prolong the life of the machine and reduce the wear on the movable parts to a minimum.

In the present preferred embodiment of this invention, the above-mentioned objects are accomplished by the provision of a resilient traction wheel on the machine, and a resilient pitman connection between the wheel and the movable leaf of the bellows. By combining the resilient wheel with the resilient pitman connection there is obtained a certain elasticity not only between the movable leaf of the bellows and the traction wheel, but also between the axle of the machine upon which the wheel is mounted and the movable leaf of the bellows. This improved structure allows a free play of the parts of the machine without the necessity of providing loose connections or supplemental springs for the bellows and the axle mountings.

The details of the invention will appear more specifically from the following detail description of the present embodiment of the invention, the same being illustrated in the accompanying drawing wherein Figure 1 is a side elevation of a conventional form of vacuum cleaning machine having the improvements applied thereto. Fig. 2 is a front elevation of the same. Fig. 3 is a detail, enlarged, side elevation of the forward end of the machine and the im- Referring to this drawing, wherein like parts are indicated by similar characters of reference throughout the several views, 10 designates the body of a vacuum cleaner of any approved type having a supportinghandle 11 adapted to be grasped in the hand to elevate the body 10 and bring a nozzle 12 at the forward end of the body into contact with the surface to be cleaned. The for.- ward end of the body is provided with a transverse axle 13 upon the opposite ends of which are mounted a pair of supporting wheels 14 provided with rubber or other form of friction treads 15.

The traction wheels 14 are preferably of the'resilient type and are made up of a cast rim structure having inwardly extending lugs 16 at spaced intervals within the rim, and having a cast hub 17 having corresponding outwardly extending lugs. Rings 18 of resilient material, such as piano wire, are passed through the opposed lugs of the rim and the hub to yieldingly connect the same. These rings 18 provide a resilient action for the wheel.

The body 10 is provided with a bellows of any suitable type, as is usual. and in the present illustration the machine is shown as having two bellows 19 disposed at the opposite ends of the body and on top thereof. The movable leaves of the bellows are secured to a common rocking plate 20 which has connection at its forward end with the traction wheels, whereby to effect the rocking of the plate 20 and the consequent operation of the bellows 19.

The connection between the plate of the bellows and the traction wheels is shown in the present instance as of the pitman type, and is resilient. This connection comprises a bail 21, the middle portion of which is hinged by a clip 22 to the forward end of the bellows plate 20. The opposite ends or arms of the bail 21 are turned down at right angles to the middle portion of the bail and have pivotal connection at 23 to one of the lugs 16 of each traction wheel. It is thus noted that the bail is eccentrically pivoted upon the traction wheels, so that upon the rotation of the wheels the bail is raised and lowered to thus rock the plate 20.

An important feature of this invention is to provide a resilient connection between the ture of the invention is carried out by forming the bail 21 of resilient, relatively thin wire possessing considerable elasticity, and which has its downwardly extending arms 24 curved so as to insure a spring action in the raising and lowering of the bail. In Fig.1 this curving of the arms 24 is effected by bending the arms into substantially S- shape, while in Fig. 3 of the drawing the arms 24* are shown as bent into semi-circular form so as to providea single enlarged loop which is adapted to yield upon sudden impact or jar to thus absorb all shock, and thereby prevent undue Wear upon the rocking and rotary parts of the machine. "It is, of course, understood thatthe arms 24L may be curved in any desired manner so as to provide for a resilient connection between the wheel and the bellows. I

What I claim is 1. In a vacuum cleaning machine, the combinatlon wlth a body having a bellows thereon, of a pair of traction Wheels on said body, and a bail hinged at its middle portion to themovable leaf of the bellows having curved resilient arms depending therefrom, and having eccentric pivotal connection with said traction wheels, whereby to operate said bellows upon the movement of said body.

2. In combination with'the body of a vacuum cleaning machine and a bellows thereon, of a pair of traction wheels supporting the body, and a bail hinged at its middle portion to the movable'leaf of the bellows and having its opposite arms bent down at right angles to the middle portion and pivotally connected eccentrically to said traction wheels, said downwardly bentarms being curved whereby to provide a resilient connection between the traction'wheels and the bellows.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses. 1 c r v GEORGE BRAND. Witnesses:

JosnPH J. MILLER, FRANCIS H. LEI-IMAN.

G'opies of this patent may be obtained for 'five cents each, by addressing the Gon'imissioner of Patents,-

Washington, D. G.

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