US946832A

US946832A - Vacuum cleaning device.

Info

Publication number: US946832A
Application number: US46318608A
Authority: US
Inventors: John N Whitehouse
Original assignee: DUSTO Manufacturing CO
Current assignee: DUSTO Manufacturing Co
Priority date: 1908-11-18
Filing date: 1908-11-18
Publication date: 1910-01-18
Anticipated expiration: 1927-01-18

Description

J. N. WHITEHOUSE.

VACUUM CLEANING DEVICE.

APPLICATION FILED Nov. 18, 1908.

Patented Ja.11.18,1910.

,.roH-N N. wHiTiioUsE, or

NEW YORK, N. Y., s'sieiois 1roV "rin: D'Usfro-MFG. co., A.'

CORPORATION or NEW YORK.

VACUUM CLEANING Dlisvicn.

Specicationf Letteri'atent. tnted J 3,11. 1`8, 1910.

Application med November is, 190s. seria1No. 463,186.

To all whom 'it may concern:

Be it known that I, JOHN N. WHITE- HoUsE, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Vacuum Cleaning Devices, of which ythe following is a specification. Y

My present invention relates to a vacuum cleaning device adapted especially to be of convenient size for hand operation and useful as aI hand device for cleaning purposes in households as well as for such other uses as removing chalk dust from billiard tables.

The various features of construction and advantages resulting therefrom will `be apparent from an understanding ,of the following specification in connection with the drawings.

In the drawings, which show Asome of the forms which my improvements may take,

Figure 1 isia top plan view ofa device complete within my invention, Fig. 2 is a vertical section on an enlarged scale, partly in elevation, of the device of! Fig. 1, Fig. 3 is an underneath plan view looking up at the underside of the mouth-piece of the device of Fig. 2, Fig. 4 is a sectional view, partly in elevation, on an enlarged scale, of the dust valve and connected parts shown in Fig. 2, Fig. 5 is a sectional view, partly in elevation, on an enlarged scale, of the piston, air valve and a portion of the piston rod shown in Fig. 2, Fig. 6 is a partial view of the handle end of a modified form of vacuum cleaner device, said view being partly inI section and partly in elevation, and the modification comprising a change in the form of handle, making the device more,

convenient to hold as well as operate; Fig. 7 is a side elevation, partly in vertical section, of a modified form of mouth-piece, and Fig. 8 is a perspective view of the mouthpiece of Fig. 7 on a smaller scale.

Describing now my invention and improvements with particular reference to the devices of the drawings, and reserving it to the claims to point out the novel features, I will first refer more particularly to the devices shown in Figs. \1 to 5 inclusive, wherein the body portion of the device comprises two tubular sections 1 and 2, detachably united by a bayonet joint connection. Thus, the body portion is made up of a pump barrel or tube 1 and a dust barrel or tube 2,

adaptedto be .separably united by a bayonet Joint connection 3. The fit 'between the tubes where one telescopes within the other should be snug to prevent entrance of air. f

It. may be here noted that in the device shown, the dust tube telescopes within a collar extension from the pump barrel, the end of which barrel consequently forms a projecting rim or stop 4 inside the collar extension, said rim having a function hereinafter yset forth.

Mounted on the free end of the dust barrel is a mouth piece, that shown in Figs. 1, 2 and 3 comprising a back 5 from which extend brush bristles 6 arranged about its periphery and surrounded by a fiexible wall of rubber or other analogous material for the purpose, said flexible wall being secured air-tight to the back of the mouth-piece and extending preferably somewhat below the tips of the bristles. This mouth-piece permits the cleaner to take up with efficiency the dust and dirt contained in the area covered or included by the flexible walls. At the same time, said flexible walls do not interfere with the bearing of the ends of the brush bristles on the surface to be cleaned; on the contrary, the two parts cooperate to Sgive a maximum cleaning eect. An inspection of Fi 2 shows that the back of the mouth-piece as an opening through it which leads on the one side into the hollow of the mouth-piece, and on the other into the du'st barrel. Extending from this opening and carried by the back of the mouth-piece is a dust delivery tube 8 which preferably extends concentrically up through the dust barrel and has its mouth valve-controlled near the upper end of said dust barrel. The valve referred to is hereinafter called a dustl valve and comprises a valve member 9 having its seat against the end of the dust delivery tube, said valve having a stem 10 slidably mounted in `a frame 11 secured to the end of the dust delivery tube, said stem having a projection 12 between which and a portion of the frame is located a` spiral spring 13 giving the stem and valve a normal tendency to seat the valve across the end of the dust delivery tube. Thus, it will be noted that the arrangementY of the dust valve is such that suction exerted on the dust barrel will open the valve, permitting the dust to be delivered from the valve end of the dust delivery tube I externally screw threaded and receiving a seated, preventing the return of dust in tube, extending `ydust barrel, glves ample space* wlthin said pump barrel and has on its end outside the disk 17 of packing material, said disk havhaving a diameter greater than that of the tubular extension from the pump barrel, and

Vinto the dust barrel, whereas when the suction ceases, the valve becomes automatically backward direction into the dust delivery tube. It will be noted that the dust delivery as it does high up into the barrel and around the dust delivery tube for the storageof the collected dust and dirt.

' Within the pump barrel Vl is mounted a piston 14 having a piston rod 15, which extends slidably through the head of the arrel a handle 16. The piston comprises a ing a central hole through which is received the'end of the piston rod, said rod being pair of

collars

18 and 19 one on either side of the disk of packing material, said disk collars to ermit its outside rim to be bent over at rigit angles to be received air tight a ainst the interior of the pum barrel. The plston end of the rod is hol ow and communicates by an opening 20 through the wall of the piston rod with the interior of the pump .barrel on the side of the piston which is toward the handle. This opening is controlled by a`valve 21 mounted on `a leaf spring 22 seeuredtto the piston rod. A bridge 23 on the piston rod straddles over the valve and limits its outward throw away from the opening which it controls. It will be noted that the air valve 21 is such that upon the reciprocation of the piston, airis exhausted from the dust barrel into the pump barrel, said air passing through the hollow of the piston rod, thence past the air valve 21 into the handle end of the pump barrel, whence it. escapes through the piston rod opening in the head of the pump barrel, which for this purpose is sufficiently larger in diameter than the piston rod.

Located between the dust barrel and the pump barrel, is a dust filtering device 24, which allows the air to pass into the pum barrel but stops the passage of dust. Thls device is removably mounted within the end of the pump barrel, and in the device shown in Fig. 2, takes the form of a ring 24a and a piece of gauze or other suitable material 24b held by the ring stretched across the en trance into the pump barrel. Thus, the edges of the gauze are jammed between the outside of the ring and the interior of the said ring and gauze are inserted in this relation until the projecting rim 4 of the pump barrel is reached. When it becomes necessary to provide the filter device 24 with new gauze, it may be readily removed from its position shown in Fig. 2 by means as follows. Thus, it will be noted that the piston rod near the handle is provided with a sliding collar 25 having a set screw 26 adapted to secure the collar to the piston -rod in any given position of adjustment. The piston rod is made of such length that on its full inward stroke the piston can contact with the filter device and force same outwardly beyond the end of the pump bar'rel. On the other hand, during the normal operation of the device for cleaning purposes, this full stroke of the piston is prevented so that ity does not contact with the filteringv device by Aadjusting the collar 25 to a given point on the piston rod, at which the collar contacts with the head of the pump barrel before the'piston reaches or can touch the filter device.

l The operation of the devices of Figs. l to 5 will consist in passing the mouth-piece over the arts to be cleaned and reciprocating the han le, which for this purpose may be grasped in the right hand, with the left hand grasping the pump handle. To make this still more convenient, I have devised the modification in Fig. 6, wherein a secondary handle 27 is provided, formed on an extension from the bined pump barrel head and handle being convenlently and preferably made ofwood. This construction 1s advantageous especially in large sizes of the cleaner wherein the pump arrel will have a diameter too large, or at any rate, inconvenient to be grasped by the hand.

As the piston 14 reciprocates, it will be noted that on its-outward stroke, it will exhaust the air in the dust barrel, opening the dust valve 9 and sucking in dust and air through the dust delivery tube 8 into the dust barrel. The solid particles so taken in cannot pass beyond` the filter device 24, but on the contrary remain and collect in the dust barrel. On the other hand, the air valve 21 will be closed on this outward stroke and the piston will consequently force the air before it outof the handle end of the pump barrel. On the other hand, upon the return or inward stroke of the piston, the dust valve will close and the air valve will open, there` by preventing, on the one hand, the return of either air or dust Vinto the dust delivery tube, and on the other hand, permitting theV air on the mouth-piece side of the piston to pass through into the handle side of the pump barrel, whence it will. be ejected as before by the next outward stroke of the piston. When it is desired to empty the dust barrel of its accumulated contents, it is only necessary to disconnect said barrel from the pump barrel by operating the bayonet joint. Thus, the operation, cleaning and assembling ofthe device is of the utmost simplicity. Similarly, the removal and replacing of the filter device is as readily accomplished, as previously explained.

In Figs. 7 and 8, a modified form of mouthpiece is shown, which as above is secured to le pump barrel head, said comthe end of the dust barrel and has a body por- A of the mouth-piece forward toward the frontA tion .5a with opening extending therethrough and with dust delivery tube 8a leading therefrom up into said dust barrel. The mouthpiece shown in Figs. 7 and 8 has'inclosing sides 28 and a front portion 29 with a rear portion 30 which is flexible and extends from the rear side of the dust opening in the body wall 29, and is separated therefrom by a more or less narrow slit or passageway, through which the dust and dirt enters. This rear portion 30 due to its iexibility and springiness maintains itself at all times in contact with the surface passed over; This, coupled with the fact that the bottom edge of the front portion 29 will always -be in close contact with said surface, sinceit forms the supporting nose upon which the device rests as yit is pushed along, secures at all times an efficient contact, for the working of the device, between the edges of the mouthpiece and the surface cleaned, and it will further be noted that the sides 28 coperate in likewise securing this condition.

Having thus described my invention, what I claim is:

l. A hand operated vacuum cleaning device comprising a dust barrel, a suction pump, bayonet Joint devices detachably connecting said pump to the upper end of the barrel in air-tight manner, a mouth-.piece on the dust barrel contacting with the surface cleaned, said mouth-piece Vhaving an opening leading into the dust barrel, a dust delivery tube extending from said opening in the mouth-piece through the interior of the dust barrel into its upper end, and there having its mouth controlled by a dust valve, said valve opening under suction from the pump and otherwise being normally closed, and a dust filtering Idevice located at the unionbctween the dust barrel and the pump.

2. In a vacuum cleaning device, the combination of a dust barrel provided with a mouthpiece adapted to be moved over the surface to be cleaned, an exhaust pump detachably connected with said barrel, and itself being a barrel within which reciprocates a piston and a piston rod, a filter slidingly fitted in the end of the pump barrel where it adjoins the dust barrel, and an adjustable stop between the piston rod and the ump barrel operating to control the reciprocations of the piston rod and piston to i prevent contact with thev filter, and being adjustable to permit the piston to force the filter out of the pump' barrel.

3. In a vacuum cleaning device, the combination of a dust barrel provided with a suction mouth and pump barrel, connecting devices between said barrels separably connecting them, a filter device at the union between thecbarrels comprising a ring slidable within the end of the pump barrel, having a filter medium stretched across it with its edges jammed between the outside of the ring and the interior of the pump barrel, a piston rod slidable through the head of the pump barrel,.a piston on said rod within the pump barrel, and a slidable collar with set screw on the piston rod outside of the barrel, said piston rod, ing long enough on its inner stroke to push the filter device out of the pump barrel, said collar being adjustable into a position on saidrod to contact with the pum barrel on the inner stroke of the piston rod Ibefore contact with'the filter device during the normal operation of the vacuum cleaner for cleaning purposes. Y

4. In a vacuum cleaning device, in combination with vacuum producing means, a mouth-piece passing over the surface cleaned, said mouth-piece having an opening therethrough leading to the vacuum producing means, said mouth-piece having walls surrounding the entrance into said opening and comprising front and rear walls, one of which tends to occupy a normal l position with its contact edge relatively below the Contact edge of the other wall, and being yielding in up and down direction, said walls further comprising walls at the side of the mouth-piece connecting the aforesaid front and rear walls.

In witness whereof I have signed my name to the foregoing specification in the presence of two subscribing witnesses.

\ JOHN N. wHiTnHoUsn.

SIMON STEINGUT.

when the collar is loose,'be