US1472428A

US1472428A - Booster for siphons

Info

Publication number: US1472428A
Application number: US468981A
Authority: US
Inventors: Carroll H Case; William C Farrar
Original assignee: Individual
Current assignee: Individual
Priority date: 1921-05-12
Filing date: 1921-05-12
Publication date: 1923-10-30
Anticipated expiration: 1940-10-30

Description

i. CARROLL H. cass, or s'r. Louis country',

Patented @et EQ, 192.5.

N nuire-estaras PATENT orifice.

ANI) WILLIAMC. FARRAR, OF ST. LOUIS7 MISSOURI.

soos'rnn For; SrrHoNs.

Application filed May 12,

To all wlw/m, it may concern:

Be it known that we, CARROLL H.. CASE, a citizen of the United States, residing in the county of St. Louis and State of Missouri, and VILLiAM C. FARRAR, a citizen of the United States, residing in the city of St. Louis and Stateof Missouri, have invented a new and useful Improvement in Boosters for Siphons,of which the fcllowing is a full, clear, and exact Specification, reference being had to the accompanying drawings, which form a part thereof.

Our invention relates: to boosters to augment the flowof liquid through siphons and more particularly to boosters for Siphons used in lifting water over Va levee or Similar elevation where the difference in'level of water at the intake end of the Siphon and at the discharge end thereof is Small.` v Heretofore in operating a Siphon under Conditions where there is a small-diiference `in head the efficiency of the Siphon is so greatly impaired that such operation is vertually ineffectual.

Thek obiects of our invention are to provide means whereby the ,eiiiciency of siphons operating under Such conditions will be greatly increased; to provide means for maintaining a flow of liquid through the discharge end ofthe Siphon whereby the flow of liquid through Said siphonzwill be augiented; and Vto provide a booster which will not only increase the flow of liquid through a Siphon operating under Small r difference of head. but which will increase the volume of liquid passing through the Siphon at all times under any conditions.

Our invention is clearly shown in the accompanying drawing where similar letters are used to designate similar parts. The figure in the drawing shows a Siphon laid over an embankment such as a levee, or any Similar elevation.

Referring to the letters.i A is a Siphon laid over the levee B.V The intake end C of the said Siphon being positioned in the Sump D from which the`water is to be siphoned. The discharge end E of the Siphon is arranged with the check valve F which is preferably positioned away from the vertical., as shown.l so that its own weight will hold it against the mouth of the discharge end E, thereby allowing the discharge of water but preventing the inflow of water or air at said discharge end. The check valve 1921. SeralNo. 468,981.

F may be raised by the cord G, or any other means. At the highest point, preferably,` in the Siphon A is connected the air pump H whereby the air is drawn from said Siphon thereby creatin(r a vacuum whereby the Siphon may be primed and may at all times be kept Yfree of air. I is an auxiliary water pipe through which water under pressure is Supplied by the force pump K to the ejector nozzle l which is arranged in the discharge leg of the Siphon5 preferably near the end thereof,'so as to augment the flow of water therethrough. Water for the auxiliary pipe l may be drawn through the pipe L by the pump K from the sump or any suitable source of supply.

The operation of the Siphon and the nozzle is as follows: The check valve F is held by its own weight against the discharge end E thereb7 preventing the inflow of air, and air is drawn from the Siphon by the air pumpl'l until avacuum is created in said Siphon-Strong enough to suck water in at the intake mouth C and up to and past the highest point of the Siphon A.. The flow of water down from the highest point of the Siphon to the discharge end then starts and kthe Siphon soon fills and then operates. As

soon as the flow of Water through the Siphon commences the check valve F is forced upwardly bv the pressure of the water or it may be lifted and held in an upwardly po`sition by the cord G as described. The pump H is operated to draw water through the tube L and force it through the auxiliary pipe I into the Siphon A through the ejector nozzle J. The impact due to the flow of water through the ejector nozzle J tends to augment the flow of water through the discharge end E, thereby assuring a continued functioning of the Siphon even though the difference of head is Small. The air pump H is.y preferably. continued in operation to maintain the Siphon free from air.

Successful and eicient operation of a Siphon necessitates the maintenance of the flow of liquid through the discharge leg of the Siphon.l and the flow through the discharge. leg creates a suction in the Siphon whereby the inflow of liquid at the intake end of said Siphon is maintained. The suction created by the outflow of liquid through. the discharge leg of the Siphon must be strong enough to overcome the friction in the Siphon, and therefore there. must be a 11n dilicre-nce of level between that of the water in the Sump and that at the discharge end suHicient to overcome the friction and create a How of water. In Siphons operating un-` der a small difference of head, the difference is often too Small to maintain the Suction required for successful practical-operation.` Our invention provides for the maintenance of a flow of liquid inthe discharge leg of the Siphon which is at all times much greater than the flowV due solely to the difference ot' the levels of` water in the sump and in the river thereby assuring Succesful operation at all times.

The air pump H and the water pump K areshown diagrammatically Since we do not Y wish to restrict ourselves to any particular type of either.

a source of Supply and place of discharge,

an' air' pump whereby Said siphon may be primed and maintained free of air, and means wherebywater from said source of supply may be impelled into said Siphon near the' discharge end thereof.

3. In combination with a Siphon having asourcc'of supply anda place/of discharge,

an air pump whereby said Siphon 'may be `primed and maintained freeofair, a force pumpdrawing water fromY said source of supply, and a discharge pipe'from said force pump Ventering said Siphon near the discharge endl thereof whereby a iow of liquid may be maintained through the discharge end ofsaid Siphon.

4. In combination with a Siphon having a source of supply and place'of discharge, an air pumpfwherebyfsaid Siphon. may 'be primed and'maintained free of air, a force pumpdrawing water from said. source of supply, a-discharge pipe from Said Vforce pump entering said Siphon near the discharge endthereof, and anxejeetorrnozzle attached `to. said pipe and inside of said Siphon wheref by liquid may be impelledginto the discharge leg of-'Said Siphon.

5. In combination with a siphon having a Source of supply and place of discharge, a

check valve at the discharge end thereoian airpump toy draw air rom said Siphon, a force pump drawing water from said source of' Supply, a discharge pipe from saidforce pump entering said Siphon near'tlie'discharge Tend thereof, land an ejector nozzle attached tosaid pipe and inside of'saidy Siphon` whereby liquid may be impelled into theV discharge leg of Said`..siphon. f i In witness whereofwe have signedour names to this'specic'ation.

cARRo-LL H. elisa; i

1 WILLIAM CJFARRAR. y'