US1752664A - Apparatus for cleaning walls - Google Patents

Description

April 1930- G. J. FORCIER 1,752,664

APPARATUS FOR CLEANING WALLS Filed July 27, 1929 INVENTOR Geo/7e f Fara/er amid:

ATTOR N EY MM Apr. 1, 1930 PATENT OFFICE GEORGE J. IORGIER, 01 LAKEWOOD, OHIO APPARATUS FOR CLEANING WALLS Application filed July 27,

This invention relates to an apparatus for cleaning walls or other surfaces by attachment to a vacuum cleaner.

One object of the present invention is to provide a cleaner with accessible parts and mechanism of simple construction.

With this and other objects in view, the invention consists of the novel combination of elements hereinafter described more in detail.

It will be understood that the forms of the invention which are shown and described herein are illustrative only, and that changes and modifications may be made without departing from the spirit or scope of the invention.

The above referred to and other objects and advantages of the invention will appear from the following description taken in connection with the drawings which form a part of this invention and in which Fig. 1 is a front elevation with shutter fingers open and sweeper attached.

Fig. 2 is a transverse section taken on line 22 of Fig. 1.

Fig. 3 is a perspective section taken approximately on line 3-.3 of Fig. 1.

Fig. 4 is a front elevation of a shutter finger and roller, with spring coil in released position. Fig. 5 is a side elevation of shutter finger and roller, with spring coil compressed.

Fig. 6 shows a modification of a handle which may be telescoped.

Referring to the drawings, 1 represents the motor of a vacuum cleaner 2, the motor being controlled by a switch 9, and rollers 3 being provided for propellmg on the floor. The motor drives the usual fan found 1n such devices.

8 to drop or feed into adapter air chamber The apparatus is attached to the outlet end 1929. Serial No. 381,577.

4 where the air current immediately sends it upward through the passage in hose 11 to the ez zpanslon chamber 12 in the head of the device from which it is propelled against the surface 20 to be cleaned as the pressure of the rollers 13 against the surface cause the shutter fingers 14 to which they are attached, to recede thru apertures 15 in the spring chamber 16 in the head, which compresses shutter springs 17 thus opening the mouth for the cleaning material 8 to contact with the surface to be cleaned.

The material 8 is forced against the wall surface in a swirling movement and drops downward under the steady pressure of air a and cleaner until it enters suction return chamber 18 in the head, moving downward thru the passage in hose 19 and is returned to hopper 5.

The head or mouthpiece 21 of the cleaner 79 attachment is adjustably supported in a handle 22 of which handle 23 is a modifica: tion. The upper portions of hose 11 and 19 protrude thru handle 22 for rigidity in handling. A rubber bumper 24 is provided for 78 the head 21.

The cover plate 36 may be fastened to head '21 in such manner as to permit removal of pin 37, releasing shutter fingers 14 and allowing spring coil 17 to be removed through Q hand hole under cover plate 36.

In use, the fan of the sweeper will force a blast of air through the pi e 11, entraining a suitable quantity of t e granulated cleaning material 8 and projecting the same 3 against the wall or surface when the head 21 is applied thereto, the pressure of the head against the wall causing the spring shutters 14 to open. The impact of the material dislodges dust and dirt which is returned 00 through the pipe 19 to the hopper. The head 21 is moved over the surface as the operation proceeds. When the head 21 is removed from the surface the shutters 14 are closed by the springs 17 and the discharge is stopped. 00 I claim:

1. A cleaning apparatus comprising a hop per for containing cleaning material, a head having a mouth for application to the surface being cleaned and discharge and return passages communicating with said hopper and mouth, spring shutters at the mouth, adapted to be opened by pressure of the head against said surface, and means to cause a blast of air through said passages.

2. A cleaning apparatus as set forth in claim 1, the shutters being rovided with rollers to bear against said sur ace.

3. A cleaning apparatus as set forth in claim 1, the shutters being slidable toward and from each other at an angle whereby they will recede to open the mouth when pressed against a surface.

4. A cleaning apparatus as set forth in claim 1, the shutters comprising a series of sliding plates with stems at the rear, and springs coiled around said stems and adapted to press the plates outwardly to closed position.

In testimony whereof, I do aifix my signature.

GEORGE J. FORGIER.

Images