US1678258A - Hydraulic vacuum cleaning device - Google Patents

Description

2 Sheets-Sheet C. F. M DONALD HYDRAULIC VACUUM CLEANING DEVICE Filed NOV. 4, 1926 July 24, 1928.

[72 vn tior fiidjimw f' 174020710 Z'd July 24, 1928.

C. F. M DONALD HYDRAULIC VACUUM CLEANING DEVICE Filed Nov. 4, 1925 2 Shegets-Sheet- 2 619m; j? 1% 20mm,

Httorn'ey Patented duly 2.4;1928

-CL.AYTOI\T F.; MACDONALD, OF

ASHEVILLE, NORT CAROLINA.

HYDRAULIC. vacuum; CLEANING imvxcn.

Application filed November 4; 1926. Serial No. 146,220.

' This invention relates to improvements'in hydraulic vacuum cleaning devices, and has for its primary object to provide a device ofthis character that may be permanently infstalled within a building, and soconstructed as to permit of thefatta chment 'of vacuum' nozzles to the vacuum inlet pipeof the device so that carpets, articles of furniture, etc, etc, on the various floor levels of the building may be properly cleaned.

A further ob'ect is to provide a device of this character wherein .aplurality of fluid jet nozzles are arranged in the vacuum chamber, all of which have communication with a single source of water supply, and

complementary to each of which is an exhaust pipe for consequently multiplying the force of the vacuum within the chamber that would otherwise not be present in the case of but a single jet having a single exhaust 1pc. 1 I

A further and most important object is to provide a vacuum cleaning evice of this character wherein asupply-o the vacuum producing fluid is injected into the'vacuurn chamber at the upper end thereofwhen the pressure of the fluid fiowinginto the chamber is relatively low for the purpose of effectively cleaning. the interior of the cham ber at the start and finish of the vacuum.

cleaning. operation. j

It is generally well known that hydraulic vacuum cleaning devices. of this general character will in thecourse-of time become so clogged with dust and dirt that the'device will not operate by reason of the facteffectively discharged intothe sewerage sys-.

tem without disagreeable noises usually accompanying the exhaust ofthe fluid and without permitting the escape of the dust and dirt after. being, exhausted from the p vacuum'p roducing chamber.

' A final salient object is to, provide a vac-. uum cleaning device of this character that 'is ofextremely simple construction, inexpensive of installation, and highly effective in'its operation, i a

- Other objects will become apparent as the nature of the invention is, better understood,

' a vacuum cleaning device constructed in acthe same comprisingthe novel form, combination, and arrangement, of parts hereinafter more fully described, shown in the accompanying drawing and claimed.

In the drawings wherein like referenc characters indicate corresponding parts throughout the several views:

Figure 1 is afragmentary vertical section through a building havinginstalled therein cordance with the present invention.

-Figure 2 is a view'partly in side elevation, J and partly in section of the device, per se. I Figure?) is a detail vertical section taken at rightangles through the device as dis- 7 closed in Figure 2,-and

. F'gure 4 is a transverse section taken substanti'a'lly upon the line 44 of Figure 3.- Now having particular reference to the drawings wherein there isdisclosed the most practical embodiment of the invention with which I am at this time familiar, 5 designates a metallic vacuum chamber preferably of square shape in cross section asiindicated in Figurev 4, the outer side wall of which is provided with a large hand opening 6 within which is arranged-and rigidly secureda closure platey7 having a normally plugged opening 8 therein. The lower end of the vacuum chamber 5 is of tapering formation as clearly disclosed in Figures l and 3,- and the end'thereof terminates into a pair of branch pipes 9 9 between which at the upper ends thereof isa pyramidal spacing block 10 serving to guide the vacuum producing fluid together with the dust and dirt into said branch pipes 9-9 and for preventing the accumulation of the dust and dirt therebetween.

The top wall ofthe vacuum chamber 5 is provided with a threaded-opening 11' within which is arranged one end of an elongated vertical dirt and dust inlet pipe 12 that is extended vertically through the floor level of the building A in Figure 1, and equipped at each floor level with a vacuuru hose connection B, it being obvious from a, consideration of Figure '1 that the vacuum chamber of the device is disposed within the cellar of the building. l The sidewall of the vacuum chamber 5 opposite thefhand opening 6 is formed with an opening 13 within which is mounted the inlet end of a Yv-pipe 14, the branches of which I terminate in a depending manner within the center of'the chamber, and in exact centered relation with respect to the exhaust branches 9.--9 of said Vacuum chamber.

- Within the exhaust ends of the branches are jet nozzles 15-15, the bores of which are of tapering formation so as to provide restricteddischarge openings at the outer ends thereof, see Figure 3.

In communication with the branch pipe 14 at the inlet end thereof, and at the outer side of the vacuum chamber 5 is a short pipe fitting 16 in communication withqthe outer end of which is a fluid inlet pipe 17 in communication with a source of steam compressed air or water supply, preferably the building water supply and within which pipe is located a conventional globe valve 18, see Figure 1. v

Associated with the core of this valve is an elongated vertical rod 19 that extends through the floor levels of the building A, and is equipped at each floor level with an operating handle 20 so that the valve may be turned on or off at any floor level. 25

The top side of the fitting 1(yis formed with an opening '18 across the center of which is a ball valve supporting pin 19. Arranged upon the top side of this fitting 16 and having communication with the-opening.1 8- therein is a small fluid chamber 20"" upon the upperend of which is a cap head 21- threaded intowhich is one'ei i'd of' an elbow pipe 22, the opposite end of which has communication with the interior of the vacuum chamber 5 at the upper end thereof. Arranged within this fluid chamber is a ball valve 23 that under-zero or low water pressure will restunon the pin 19 as disclosed by the full lines in Figure 3. Obviously,

as the valve is turnedon to permit the introduction of the fluid into the vacuum chamber through the jet nozzles 1515, the pressure will be relatively low and consequently the ball 23 willnot be raisedrto the dotted line position in Figure 3 which would close thefluid passage through the elbow pipe 22, thus allowing a certain amount'of the fluid to pass through the elbow pipe and enter the vacuum chamber 5 at the upper end thereof for thoroughly cleaning the interior of the chamber at the initial operation of the device. This is also true at the end of the operation by reason of the fact that as the globe valve 18 is operated for cutting off the supply of fluid, the pressure will be reduced at the end of the closing op eration, again letting in a certain amount of V the fluid for cleaning the interior of the vacuum chamber during the last stages of operation of the device. As soon as the pressure of the fluid passing into the vac- "uum chamber hasreached a certain degree,

the ball valve 23 will be automatically raised as indicated by the dotted lines in Figure ,3

pipes effecting pistons passing therethrough and by the long stroke of the columns of water between the inletand outlets of said pipes a great pull or vacuum forcewill be provided for the vacuumchainber 5. Obviously, by reason of the two exhaust pipes 2525 together with their complementary jet nozzles 15-15 a double force of the vacuum will be securedeven though a single supply of fluid under pressure is present.

The lower ends of the exhaust pipes 25 are arranged within a tank 26 from which leads,

a discharge pipe 27 in communication with 3 the sewerage system. This pipe 27 .is in communication with thetank a'bove the bottom wall thereof so as to maintaln a cushion of Water within the tank as clearly disclosed 'in Figures 2 and 3; v

In addition to the connection B within the in the insert plate 7 of the vacuum chamber 5 is provided in order that theflu'e of'the v furnace C' may be conveniently cleaned.

It will thus be seen that I'have' provided a highly novel, simple and efficient hydraulic vacuum cleaning device that is well adapted for all the purposes-heretofore designated, and even though I have heremshown and) described the invention as consisting of certain detail structural elements it is neverthe,- less to be understood that some changesn ay p be'made therein without affecting the spirit and scope of the appended claims. I

Having thus described the invention, What I claim as new, and desire to secure by Letters Patent is 1. In a vacuum cleaning device of the" character described, a vacuum chamber having a suctlon inlet atone end, and a a double jet nozzle arranged within the vacuum chamber each of said nozzles being centered above the respective exhaust pipes of the vacuum chamber, a common fluid pressure inlet for said jet nozzle, and means automatically operable for introducing a charge of the fluid into the chamber above the nozzleduring low pressures of the fluid, said means being inoperative when the pressure of the'fluid reaches a predetermined degree.

pair of exhaust pipes at its. opposite end,

2'. 'In a hydraulic vacuum cleaning d e' vice of the'class described, a vacuum chamher having a waste inlet in the top thereof,

;interpo.sed between the fluid supply pipe and said nozzle, a fluid receiving chamber arranged on thetop of the fitting and com- 'mumcating with the bore thereof, a pipe affording communication between the top of said chamber and the extreme upper portion of the vacuum chamber, and a normally open valve arranged within the fluid chamber on said fitting.- i

3. 'In a hydraulic vacuum cleaning device of the class described, a vacuum chamher having a suction inlet at one end, and

a fluid exhaust at its opposite-end, a fluid jet nozzle arranged within the chamber in such a manner that the fluid will be caused to discharge through the exhaust of the chamber for creating a Vacuum therein, a

nozzle for cleaning the interior of thevchamber, said means consisting'of a branch pipe -in communication at one end with the source of fluid supply andjat its opposite end with the interior of the vacuum chamber, and a normally open valve operable to closed position when a predetermined difference of pressure exists between "the branch pipe and the fluid supply pipe.

4. In a hydraulic vacuum cleaning device, a vacuum chamber having a suction inletat one end, and a pair of exhaust nozzles at its opposite end, elongated discharge pipes in communication. with said exhaust nozzles, a pair of fluid ejecting jet nozzles arranged within the chamber and being centered above the exhaust pipe, a common fluid supply pipe for both of said jet nozzles, and means whereby a certain quantity of the fluid may be introduced into the chamber above the jet nozzles for cleaning said chamber, said means comprising a branch pipe extending between the supply pipe and the upper portion ofthe vacuum chamber, and a normally open valve in the branch pipe operable to a closed position when a predetermined difference of pressure exists between the branch pipe and the fluid supply pipe.

5. In a hydraulic vacuum cleaning device of the class described,a vacuum chamber having a suction inlet at one end, and a fluid exhaust at its opposite end, a fluid jet nozzle arranged within the chamber in such a manner that the fluid will be caused to discharge through the exhaust of the chamher for creating a vacuum therein, a fluid supply pipe communicating with the jet nozzle, a by-pass structure between the supply pipe and the top portion of the VflCll'; um chamber, and a pressure controlled valve arranged in the by-pass for permitting a supply of the fluid toenter the top of the chamber only when the fluid supply pressure is exceedingly low.

6. Ina hydraulic vacuum cleaning device of the class described, a vacuum chamber having a waste inlet in the top thereof,

and a suction inlet in one side thereof adjacent the top, a fluid exhaust at the lower end of the vacuum chamber, a fluid nozzle fitted at one end in the suction inlet, said haust, a fluid supply pipe communicating with said nozzle, a by-pass structure affol-ding communication between thesupply pipe and thetop of the vacuum chamber, and a pressu'recontrolled vertically movable valve arranged in the bypass structure for permitting a quantity of the fluid to enter the top of the vacuum chamber to clean the walls thereof only when the fluid supply pressure is exceedingly low.

In testimony whereof I aflix my signature.

CLAYTON F. MACDONALD.

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