US1343510A - Air-lift footpiece - Google Patents

Description

A. 8. JENNINGS.

MR LIFT FOOTPIECE.

yAPPLICATION men ma. 20. me.

Patented June 15, 1920.

ARTHUR B. JENNINGS, OF NEW YORK, N. Y.

AIR-LIFT FOOTPIECE.

Specification of Letters Patent.

Patented J une 15, 1920.

Application led February 20, 1918. Serial No. 218,216.

To all 'whom 'it may concern:

Be it known that I, ARTHUR B. JEN- NINGs, a citizen of the United States, residing at New York, in the county and State of New York, have invented a new and useful Air-Lift Footpiece, of which the following is a specification.

This invention relates to the raising of water, and especially to raising water with compressed air, and the object of the invention is to provide a simple and efficient device for utilizing compressed air; a further object of my invention is to provide an airlft so constructed that all of the ascending waters will be directly acted upon by the compressed air thereby eliminating any pockets oi' water which 'would have to be carried upward through the pressure of water acted upon by the air pressure and insuring that all the ascending water will come in contact with the air currents.

The invention is illustrated in the accompanying drawings in which- Figure l, is a side elevation oi an air-lift foot piece constructed in accordance with my invention-the position of a part of the air inlets and part of the directing plates being indicated with dotted lines.

Fig. 2, is a sectional view, on the line 2*2 of Fig. 1 and Fig. 3, is a sectional view on an enlarged scale of a part of the construction.

In the drawing like numerals of referJ ence refer to the same parts in each of the views.

In carrying out my invention it is my purpose to force a column of Water up a pipe or Hue having an open top, or water take ofi', only the commencement of which is shown in the drawing at 4. The invention itseltl relates to the footpiece; and l lhave illustrated this portion in a manner to show clearly how my invention is applied and operated.

As shown in the drawings, my footpiece consists of a plurality of double walled water tubes -5- separated by corresponding air tubes 6, all of which are in communication with an airpipe 7. leading to any suitable source of air supply, whereby each tube 6. will be filled with air compressed 'suilciently to prevent the pressure of water from the pipe 4 entering any of these tubes, as will be understood.

In Fig. 3 I have shown on an enlarged scale the bottom of one of the water tubes 5 and a part ot' the bottom of two of the air tubes G. From this figure it will be seen that the tubes 5 are all open at the bottom so that all of these tubes are in direct communication with the water 8, in which the foot piece is substantially submerged as illustrated in Fig. l but held from engagement with the bottom of the reservoir so that the water is free to enter the bottom of the tubes. The air-tubes G are closed top and bottom, and are provided with a plurality oi short tubes 9, which project through the separating walls 10, between thc air and water tubes; and are preferably arranged spirally. as illustrated in dotted lines in Fig. -1. Thus air is free to enter the water tubes through any of the tubes 9, and these tubes are so directed that the force of the entering air will be forwardly and upwardly, as will be clear.

To insure the proper How of the water and air at the bottom of the foot piece I' prefer to use incline plates ll, as indicated in dotted lines in Fig. l, and as shown in plan in Fig. 2. These plates permit the tree entrance of water to the several water tubes; but as the air is directed forwardly and upwardly, the plates will prevent the air forcing the water down within the tubes at the bottom. thereby causing an uninterrupted upward flow, as will be clear.

The operation of the footpiece is as follows: The air-litt footpiece is built or partly submerged in a reservoir or any water which it is desirous to raise to a higher level. When so submerged it is evident that the water willstand at a level in the water pipes coincident with the level ofthe water in the reservoir. When com pressed air is admitted to the tubes 6 under suilicient pressure it will escape through all the tubes 9, into the several water tubes; and as the tubes 9. are all directed upwardly. and the plates 1l. prevent a downward pressure the air will cause the water to How upwardly through the footpiece to the pipe 4, and through that to the desired height as will be clear.

Where the tubes 9 are arranged spirally as indicated in dotted lines in Fig. 1 the flow of the water will be spirally upward thereby insuring the entrance of additional air to the ascending water before the perpendicular ascent has much increased, as will be clear.

In Fig. 3 is illustrated in a somewhat diagrammatic manner the action of the air upon the Water. It will be noted that as constructed the water tubes are comparatively limited in Width. In practice these tubes are so limited in width and the tubes 9, are so disposed that the water entering the tubes 5, through the tubes 9, will meet a short distance above the respective tubes as indicated by the arrows in Fig. 3 and after meetinf will spread out and disseminate througli the Water as indicated, thereby insuring that all the water within any of the tubes 5 will come into direct contact with the entering compressed air, and will bc carried upward by the direct application of the air, and no pockets will be formed within the Water tubes in which water will be free from the direct application of the compressed air currents.

The device is simple in construction and efficient in action and the maximum of lifting power is secured.

VVhiIe I have shown and described the tubes 5 and 6 as being circular, or cylindrical in form, it is evident that they may be any shape. It is not necessary either that the tubes 9 be arranged spirally, as the essential feature of my invention lies in the narrowness of the ascending water column to thoroughly commingle with all parts of the ascending water.

1. In an air-lift foot piece a water tube having a compressed air chamber on the outer and inner side thereof, and having a port entering the same from each compressed air chamber.

2. An air-lift foot piece comprising a plurality of cylindrical Water tubes, compressed air tubes on the outer and inner side of said Water tubes, said water tubes having a port enteringr the same from the air tubes at each side for the purpose set forth.

3. An air lift foot piece comprising,r a plurality of cylindrical water tubes open at the bottom, a compressed air chamber on each side of each of said water tubes, and a plurality of short tubes passing through the walls intervening,r between the water tubes and the respective compressed air chambers, said short tubes being directed upwardly whereby air is admitted to the water tubes in an upwardly-directed manner for the purpose set forth.

4. An air-lift foot piece comprising a plurality of Water tubes open at the bottom, a plurality of compressed air tubes so disposed that the air tubes will lie on opposite sides of each water tube, said air tubes being closed at the bottom, a plurality of short tubes placing said air tubes in communication with said Water tubes on each side, said short tubes being directed upwardly in said water tubes, for the purpose set forth.

5. In an air-lift foot piece a Water tube open at the bottom, a compressed air chamber at each side of said water tube. an ineline plate mounted at the bottom of the Water tube, and an air-inlet port at each side of said water tube above said plate, for the purpose set forth.

G.. An airlit't foot-piece comprising' a plurality of cylindrical water tubes open at the bottom, each water tube haring a plurality of incline plates mounted in the bottom thereof a plurality of compressed air tubes closed at the bottom, and air tube being on each side oi each of said water tubes, a plurality of short tubes mounted in the walls between the water tubes and the air tubes, and short tubes being oppositely disposed and directed upwardly, and a part of said short tubes being; mounted between said plates, for the purpose forth.

7. An air lift footpiece comprising a plu rality of cylindrical water tubes open :et the bottom and the top, each water tube having. a plurality of inclined plates disposed around the bottom thereof, a. plurality of conuiressed air tubes closed at tln` bottom an air tube being on cach side of said water tubes, a plurality ot' short tubes mounted inthe walls between the water tubes and air tubes, said short tubes beingr oppositely disposed and arranged in a spiral manner, that the water shall be driven by the impact of compressed air into an ascending spiral or screw like action for the purpose set forth.

Dated this fourteenth day of February, 1918.

ARTHUR B. JENNIN iS.

witnessed by- HENRY G. Fnrrscrm.

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