USRE13427E - A corpora - Google Patents

Description

G. W. MACKENZIE.

VACUUM CLEANING APPARATUS.

APPLICATION FILED MAY 3, 1912.

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UNITED STATES PATENT OFFICE.

GEORGE W. MACKENZIE, 0F BEN AVON, PENNSYLVANIA, ASSIGNOR T0 THE HYDRAU- )LIC VACUUM CLEANIN G COMPANY, 0F PITTSBURGH, PENNSYLVANIA, A CORPORA- TION OF DELAWARE.

VACUUM CLEANING APrMm'rUs.'

Specication o! Beissued Letters Patent. Reissued June 11, 1912 yOriginal No. 999,325, dated August 1,1811, Serial No. 577,109. .Application for reissue led May 3, 1912.

semi No. 694,962.

To all whom it may concern:

Be it known that I, GEORGE W. 'MACKEN- ZIE, a citizen of the United States, residing at No. 8 Monitor street, Ben Avon, in the county of Allegheny and State of Pennsyl- Vania, have invented certain new and useful Improvements in Vacuum Cleaning Apparatus, of which the following is a specification.

My invention consists of an improvement in vacuum cleaning apparatus and' is designed for the purpose of utilizing 'water pressure to produce exhausting suction by meansof an improved aspirating pump and the connected piping equipment therefor,

` constructed and adapted to operate in the manner hereinafter described.

vGenerally stated, the device comprises a casing suitably formed to provide a vacuum chamber and a suction chamber connected bye reduced communicating opening, the vacuum chamber having a water jet nozzle andthe suction chamber having a suction connection for the exhaust pipe of the cleaning tool. In the drawings: Figure lrepresents the mechanism as installed for usevin a house. Fig. 2 is an enlarged vertical sec tional view through the vacuum siphon.

` Fig. 3 is-a horizontal sectional view on the line III. III. of Fig. 2.

Ordinarily in vacuum cleaning installations and apparatus of various -constructions in common use, the dust, etc., is removed from the surface being cleanedA by suction and is delivered into a receiving compartment which must be emptied .from

time to time. My invention contemplates.

the use of any elastic fluid pressure from any available source as an ordinarywater supply system of sutlicient pressure whereby u to produce a suction current through a nection 6 leading stand pipe and my improved, aspirating pump, the waste fluid together with the collected dirt, finally passing to the sewer or other suitable point of discharge.

In the drawings, 2 represents the aspirat- Ying pump having a water supply pipe 3 introduced at its upper end, a suction stand pipe 4 extending u through one or more of the floors of a bui dingas shown and connectcd with the lateral elbow 5 of the aspirating pump, and an outlet or Waste conto the sewer.

pipe 4 as stated,extends upwardly through The stand v hose 8 and its cleaning tool are well known elements and may be of any desired design or length as to hose, to suit the use intended. At its upper terminal, the stand pipe 4 preferably extends into a box 10 having a cover 1l located in the topmost floor, the ,cover being removable to permit of the attach- Ament of the hose 8 as indicated.

The water supply pipe 3 is connected with the main l2 directly or by any intervening connect-ions, whereby to conduct the water under pressure to the injection nozzle of the, pump 2. Pipe 3 is provided with a controlling valve 13 and a key 14 therefor having an elongated stem l5 extending upwardly through `the floors as shown, and having u. handle 16, by which the valve may be opened or closed from any floor.

The pump 2, shown in detail in Figs. 2 and 3, conslsts of a casing provided at its inlet end with the injection nozzle 17 referred to. Said nozzle extends inwardly into the interior chamber 18 at the inlet end of the pump, being preferably screwed into the end of the casing as shown` having a ,very small jet opening 19 extending therethrough, and connected with pipe 3`by any suitable coupling mechanism. The stand pipe connection 5 may be in thel form of an elbow as shown, of an interior area approximating the area of the cross sectional opening of the main upper portion of the `pump and leads into the interior 2O thereof at the lower portion as shown. Between the chamber 2O and the chamber 18 at the upper end, the crossl area of the chamber is materially reduced, as at a by means of'a restricting inner annular projection 21, providing a. reduced opening for the column 22 passing from the nozzle 17. In practice I ia've secured good results by a pump having an interior cross area of two inches in diurne'ter, restricted to 52 of ail inch at the point 2l, and located about half way between the end of the injection nozzle 17 and the pointt of connection of the lateral elbow 5. 23 is a valve controlling inflow of air from th'.l outside to chamber 18 through a small port 24. and whereby thc air supply may be accurately cont-rolled or entirely cutoil. The

supply of air theretlnough is within the control ot' the operator and is dependent onl local or other conditions, as the head of tluid, its pressure, the use to which the device is being put, or other conditions which may arise in practice. Then thus constructed, and water is introduced through the jet opening 19 of the injection nozzle under high pressure, it. passes into vacuum chamber 1S, throughthe reduced opening a within restriction Q1 and then through suc-` tion chamber 20, into which the pipe 4 discharges, passing to the sewer or other waste discharge. It ywill be observed that the opening into waste pipe (S is considerably restricted as indicated at. Q5, the ,interior of the chamber at such point being preferably' rounded as shown, whereby to facilitate passage ofthel water and induced air and impurities toward and into the sewer connection. I

Forthe purpose of giving access tothe outlet end of the device for removal of any foreign substance, as matches, etc., which may lodge across the outl'et 25, I have provided a lateral opening 26 covered by a screw cap 2T, rendered'Huid-tight in any suitable way. v v

It will be understood that when attachment is made with any one of the connections 7, or with the top of the stand pipe Ll,l

all of theother connections are closed so as to utilize the full effect of the pump.

In operation, the .outflow of the column of water from nozzle 1"(y through chamber 18 and the reduced opening z formed by theannular stricture 21 and into chamber 20 toward the sewer connection, creates a strong suction through the branch connection 5 and stand Vpipe 4, of ample power to draw through the terminal 9 and hose 8 all loose impurities, dust, etc., from any surface to which the cleaning tool is applied.

n These pass, with the air, directly into contactv with the water column 22 and are carried thereby into the waste, the operation being continued as long as the current is supplied. The form of the column emitted from nozzle 17 and its volume, may be controlled by the size of the opening 19 and the pressure admitted through valve 13,'and

also, to an extent, by the controlling valve 23' when used. rIfhe restriction 21 lies at a distance beyond the nozzle 17, leaving suicient opening for the passage of `the column -22 as shown, and effects the exhaustion of the air of chamber 18 as soon as t-he machine is started, thereby tending to produce a partial or practically complete vacuum therein. The result of this constructionV is to utilize the force ofthe propelled column 22 and its tendency to expand and fill the restricted opening a by the exterior film or misty envelop surrounding the water eolumn, which is atomized or sprayed on its surface` thereby effecting exhaustion ot air from chamber 1S. aniountof air through port 24 the action of thewvater column in passing through chamber 1S and opening a may be accurately regulated, etiecting to a degree the diffusion of the outer particles ot `water surrounding the column. The operation of the column passing through chamber 1S and restricted opening a isto etfect a continuous exhaust of thel air from the chamber and a resulting condition of vacuum. '1`hisproduces a corresponding inlow of air to chamber 20 through connection 5, carrying with it the dust, etc.,` entering through suction nozzle 9, which is thus carried out with the water through the waste terminal.

In practice, the invention is capable ot' producing ample suction for all ordinary purposes. In fact, with` the pump of su'fiicientsize and with correspondingly enlarged pipe connections anda suction'nozzle made in proportion, the invent-ion may be readily adapted for street cleaning purposes, whereby all refuse, dirt, rubbish, etc., which is capable of being gathered through the suction nozzle '9 may be discharged directly into the sewer, whereby to avoid the necessity of any sweeping, hauling, etc.

Theinvention is eminently practicable, capable of long continued use without deterioration, greatly simplifies the disposition of the collected dirt, etc., and is economical to install and equip. y

What I claim is 1. An aspirating pump consisting of a ,cylindrical hollow chamber provided with an annular restriction, a. duid inlet jet at one end of said chamber having a reduced aperture, a waste connect-ion at the other end of'the chamber beyond the said restriction, and a lateral air suction connection between the waste connection and said restriction,

substantially as set forth.

2. An aspirating pump consisting of 'a cylindrical hollow chamber provided with an annular restrict-ion, a fluid inlet jet at one end of said chamber having a reducedv aperture, an' air port opening to the interior of the chamber between the annular restriction andthe fluid inlet jet, a waste connection at the other end of the chamber beyond the said restriction, and a lateral air suction 'connection between the waste connection and said restriction, substantially as set forth. 3. An aspirating pump consist-ing of a cylindrical hollow chamber provided with an annular restriction, a fluid inlet jet at one end of said chamber having a reduced aperture, a valve-controlled air port opening to the interior of. the chamber between the annular restriction and the fluid inlet jet, a Waste connection at the other end of By admitting a limited lvided the chaniberbeyond the said restriction, and a lateral air suctio-n connection between the waste connection and said restriction, sub` stantially as set forth. i

4. An aspirating pump consist-ing of a cylindrical hollow chamber provided with an annular restriction, a fluid inlet jet at one end of said chamber having a reduced aperture, a waste connection at t-he other end of the chamber beyond the said restrict-ion, a covered opening leading` into the chamber near its lwaste connection, and a lateral air suction connection between the .waste connection and said restriction, substantially. as

set forth.

5. An aspirator consisting of a vacuum chamber rovided with an annular restriction, a Huid inlet jet at one end of said chamber, an outlet opening at the other end of the chamber beyond said restriction, and av lateral air suction connection between the out-let opening andsaid restriction.

6. In an aspirator, the combination of a. casing embodyingr a vacuum chamber and a suction chamber Ahaving a reduced intervening communicating opening, a jetl nozzle extending into the vacuum chamber, and an air connection opening into t-he suction chamber. *I

7. In an aspirator, the combination of a casing embodying a vacuum chamber prowith an air inlet valve and a Suct-ion chamber having an air connection and a chamber,

-my hand and seal Athis the vacuum chamber.

8. An aspirator consisting. of a casing provided With a vacuum chamber and a suction chamber communicating therewith through an intervening restricted opening and having an air delivery opening, and a jet nozzle extending into the vacuum chamber and adapted. to pass a. column of water through the vacuum restricted opening, and suction chamber. l

9. A casing embodying a ,vacuum .chain ber, a restricted opening, and a suction chamber in longitudinal alinement, said suction chamber having a lateral air inlet opening and an endmost delivery opening, and

a jet nozzle extendiiiginto the end of the vacuum chamber in alinement with the restricted opening and adapted to propel a stream of water therethrough having an exterior adapted to substantially close the restricted opening'and to exhaust the air from the vacuum chamber. K

In testimony whereof I have hereunto set 30th dayl of April,

A. D. 1912. GEORGE W. MAOKENZIE. In presenceof- C. M. CLARKE, FREDK. STAUB.

inlet opening and a Waste

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