US1520945A - Water-pressure ejector - Google Patents

Description

A. R. GRIESEMER WATER PRESSURE EJEOTOR Dec. 30, 1 924.

Filed July 5, 1925 INVENTOR.

AR. Gz Lesemer Q mm TTORNE Y Patented Dec. 30, 192 I EZ warren stares Parent caries.

ABRAHAM R. GRIESEIVIER, OF SAN FRANCIQCO, CALIFORNIA.

WATER-PRESSURE EJEC'I'OR.

Application filed July 5, 1923. Serial No. 649,530.

To all whomz't may concern: In the drawings similar characters of ref- Be it known that I, ABRAHAM R. Gnlnsnerence indicate corresponding parts in the 55 MER, a citizen of the United States, residseveral views:

ing at San Francisco, county of San Fran- Fig. 1 is a side elevation of the device. 5 CISCO, State of California, have invented cer- Fig. 2 is a vertical section, and

. taln new and useful Improvements in lVabig. 3 1s a top plan view.

ter Pressure Ejectors; and I do declare the Referring now' more particularly to the 60 following to be a full, clear, and exact de characters of reference on the drawings, the scription of the same, reference being had numeral 1 denotes a body of suitable size to the accompanying drawings, and to the and exterior form having attached to its characters of reference marked thereon, upper end incoming and discharge pipes 2 which form a part of this application. and 3 respectively, made of a strength suffi- 65 This invention relates to improvements in cient to withstand heavy water pressures, under-water dredging or excavating devices, the pipe'2 being somewhat larger than pipe and especially to a type particularly adapted and intended for sinking holes in the beds of The pipe 2 leads primarily to a substanstrearns, and bodies of water generally, for tially bowl-shaped chamber 4 formed in the 70 removing dirt from around piles, piers, etc. bod The pipe 3 communicates with a verand in general for use in excavating small tical discharge chamber or passage 5 extendareas at a time, in any place where the maing to the bottom of the body. Leading terial being worked on consists of sand, mud, from the chamber 4 to the passage 5 and terr gravel or any more or less finely divided min'ating in an upwardly projecting tip of 75 material. 7 reduced size is a passage or jet member 6, My present device has all the advantages formed integral with the body, and designed of operation had with the ejector described to discharge straight up into the passage 5 and featured in Patent No. 1,459,153 granted and pipe 3 and yet not choke said passage to me June 19th, 1923, with however certo any detrimental extent. 0 tain improvements 1n construction, the ad- Pro ecting below the body directly under vantages of which are manifested in a lesthe chamber and communicating therewith sened expense for the necessary accompanyis a Y-bend or lateral pipe fitting 7 at whose ing accessories or equipment, and also with lower end is mounted a nozzle 8 provided a lower operating cos. with openings 9 set at suitable opposed 85 The above advantages are obtained by angles to the vertical axis of the nozzle and constructing the, ejector so that both the exbody, the nozzle being removable so that cavating and loosening of the solid matethe type of nozzle used may suit the material, and the raising of the same to the surrial being worked on. face is done by means of acontinuous cir- Attached to the side of/ the fitting is a jet 90 culation of water under pressure alone, inpipe 10 whose outer end projects upwardly stead of with the aid of an air blast as in in vertical alinement with the axis of the the previous device, and to provide a depassage 5 and which terminates a certain vice so constructed that this method of operdistance below the lower end of said pasation may be successfully carried out forms sage. This jet being preferably of smaller 95 the principal object of the present invensize than the passage 11 leading from the tion. chamber 4 to the fitting 7. Similarly the A further object of the invention is to combined area of the nozzle holes is less produce a simple and inexpensive device than that of the passage 11, so that neither and yet one which will be exceedingly the jet nor the nozzle will alone take all the 100 effective for the purposes for which it is water entering the fitting through said designed. passage.

These objects I accomplish by means of In operation, a continuous stream of wasuch structure and relative arrangement of ter under pressure, provided by a force parts as will fully appear by a perusal of pump or; otherwise, is forced down the pipe 1 the following specification and claims. 2. The volume of water thus supplied to the chamber 4 then leaves the same through the jets 6 and 10, and also through the nozzle.

The jet 6 discharging directly into the passage 5 and discharge pipe 3, creates an upward flow of water in the latter, which of course exerts a tendency to draw further water into the 'iassage :ibelow said This tendency or automatically induced upward current in the lower portion of the passage 5 is aided by the upward discl'iargc from the lower jet 10, which acts on the water thereabout and induces an upward current from therebelow.

Meanwhile the water issuing forcibly from. the nozzle 8 loosens and stirs up the material aga nst which the nozzle is directed, and said loosened material is drawn toward and mingled with the upward current flowing into the passage 5, and of course passes then upwardly through the pipe 2 to be ultimately discharged at any desired point.

From the foregoing description it will be readily seen that I have produced such a device as substantially fulfills the objects of the invention as set forth herein.

\Vhile this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

laving thus described my invention what- I claim as new and useful and desire to secure by Letters Patent is:

l. A hydraulic lift apparatus including apressurc feed pipe and a lift pipe, the latter being of smaller cross sectional area than the former, a terminal common to both, the lift pipe being freely open through the terminal, and the feed pipe having an elbow within the terminal having a restricted discharge outlet upwardly into the l ft pipe whereby liydraulic pressure from the feed pipe will provide a lifting force within the lift pipe, a discharge pipe connected with the terminal and communicat'ng with the feed pipe, such discharge pipe having two outlets, agitate the material to be lifted and the other curving upward into alinement with but below the open end of the lift pipe to maintain a constant current theretoward to keep the agitated material flowing thereto instead of being dissipated therefrom by the force of the water from the agitating discharge nozzle.

2. A hydraulic excavator comprising sepone directly downward toarate pressure and discharge chambers, the latter being free .y open at its lower end, a jet from the pressure chamber discharging upwardly into the discharge chamber, another jet connected with the pressure chamber and discharging upwardly toward the dischar e chamber but positioned below the same, and a downwardly facing nozzle connected to the pressure chamber and positioned in a plane below the discharge chamber.

3. In a dredging apparatus, thecombination of a pressure feed pipe and a lift pipe, the former being of greater area than the latter, and a plurality of outlets from the feed pipe, whereby fluid under pressure may be directed therethrough to agitate and drive the dredged material into the lift pipe.

4. In a dredging apparatus, the combination of a pressure feed pipe and a lift pipe, the latter being open at its lower end, a passage from the feed pipe directly into the lift pipe and facing upwardly in the latter, a discharge pipe from the lower end of the feed pipe, such a pipe having two outlets, one directed downward and the other upwardly toward the lower open end of the lift pipe.

5. In a dredging apparatus, the combination of a pressure feed pipe and a lift pipe, the latter being open at its lower end, a passage from the feed pipe directly into the lift pipe and facing upwardly in the latter, whereby some of the fluid under pressure in the feed pipe will be forced upward] y in the lift pipe, and means mounted in connection with the feed pipe and ar-- ranged to agitate the matter to be dredged and'to cause such agitated matter to be directed up into the lift pipe into the sphere of influence of the flow of fluid issuing into the lift pipe from the passage.

6. In a dredging apparatus, the combination of a pressure feed pipe and a lift pipe, the latter being open at its lower end, a passage from the feed pipe directly into the lift pipe and facing upwardly in the latter, whereby some of the fluid under pressure in the feed pipe will be forced upwardly in the lift pipe, and jet means mounted in connection with the feed pipe and arranged to cause any matter in suspension adjacent the lower open end of the lift pipe to be directed up into the same and into the fluid issuing into the lift pipe from the passage.

In testimony whereof I affix my signature.

ABRAHAM R. GRIESEMER.

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