US1826282A - Air bound siphon flush tank - Google Patents

Description

H. D. MOISE AIR BOUND SIPHON FLUSH TANK Filed Jan. 9, 1929 Oct. 6, 193i.

Ime/nto@ Maf Patented Oct. 6, 1931 UNITED sin-.TESg

PATENT OFFICE HARMON D. MOISE, F SUI/ITER, SOUTH CAROLINA, ASSIGNOR '110 MICHAEL B. CROSS, OF EUTAWVILLE, SOUTH CAROLINA, .AND` RAYMON SCHWARTZ, W. YATES YEADON, SOPHIA BRUNSON, AND MARION W. SEABROOK, OF SUMTER, SOUTH CAROLINA am BOUND simon FLUSH TANK Appncatior. sied January 9, 1929. lserial No. 331,218.

This invention relates to air bound siphon iush tanks and especially to the provision of means for insuring the recharging of the air chamber automatically after each flush.

5i Heretofore this has not been satisfactorily accomplished and the air bound siphon flush der pressure) was utilized to entrain and conduct air to the air chamber was subject to the same objectionit would become obstructed. These two methods were both necessarily limited as to their possible maximum bore and hence the obstruction of the bore was all the more likely to occur, quickly. A sub- 1 sidiary Siphon, vpositioned within the bell eX- tending below it slightly, and discharging into the' main discharge pipe was also used for the same purpose heretofore, namely by lowering the liquid contents of the flush tank below the bottom of the bell to thus allow the recharging of the air chamber after each iiush. This also would become obstructed and proved objectionable in other respects. By the present invention a force is utilized (which force is generated bythe downward pull of the liquid being discharged) to energize a. spring or lift a weight or compress a gas or in any other manner to store up energy. This energy pulls the bell downwardly during the latter part of the flush, thus becoming stored up in the actuating device of whatever nature, and when the siphon breaks after discharging the contents of the flush tank this stored energy immediatelyraises or lifts the bell to a higher level than it occupied when the flush ended and thus the bell being above the level of the liquid in the flush tank the air chamber recharges itself with air.

Although in an air bound siphon iiush tank the liquid contents are discharged to an extent by the mere force of gravity, yet, after the liquid content of the flush tank has been.:

lowered to the level of the top of the discharge pipe and continuously thereafter until the siphon breaks, the bell becomes a inember of a siphon and the liquid is lifted in the bell up to a sufficient height to be discharged into the discharge pipe by siphonic action within the bell. A downward pull is generated A(by this siphonic action) upon the bell and it is this force which is stored up in` a spring or its equivalent, which is utilized to pull the bell downwardly a limited predetermined distance'to store up force enough to again raise the bell to its normal elevation after the siphon breaks. In the accompanying drawings springs only are shown as the energy storing means, but any other suitable 'agent may be employed to receive the energy and upon the breaking of the siphon to lift the bell up again to the level it occupied before it was pulled down from its normal position. In case of ,automatic operation, the bell must be heavy enough not to float during the'opera'tion of the apparatus. operation this limitation does not apply.

rThis invention is illustrated in the accompanying drawings, in which Y 'Fig l is a sectional view of the tank,

siphon, bell and springs, the lowered positiony of the bell being shown in dotted lines.

Fig. 2 is a fragmentary view of a nonautomatic form of thisdevice.

Referring to Fig; l, A is the flush tank; B is t-he bell; C is the discharge pipe ofthe Siphon; D is the sewer; F is iin in the bell B; GG are the walls of the tank; H is the manhole ring; I is the manhole cover; J is the floor of the tank; LL is the automatic flushing level of the liquid; KK is Athe level of the liquid when theV energy storing downward pull on bell B begins; MM is the lowest position of the mouth of the bell B; N is the water supply valve; O is the top level of the liquid seal; P is the maximum vertical height attainable by O; and EE are springs.

The operation of the apparatus thus described is as follows: The Hush tank becoming filled with water from the supp'lyvalve N up' to the level indicated by line LL auto- (lll matically iushes or discharges its contents because of the head attained, in the usual manner into the sewer D and in progress of this discharging of the tank the liquid level falls therein to the line KK. After this level has been reached all the liquid subsequently discharged must be lifted above the level of the line KK (within the bell) in order to escape through C to D as indicated by the arrows. This puts into action a downward pull on the bell B, which pull increases as the discharge continues to lower the level of the liquid in A outside of B. This downward pull draws the bell downward until the iin F is in contact with the top of C, thus extending the springs EE and storing energy in them. Vhen the level ofi the liquid in the tank A has fallen to the line MM then the siphon breaks because some air is drawn into the bell B from the tank A. This ends the action of discharging the tank A as the bell B has reached its lowest possible position due to the impinging of F upon the top of C. The downward pull due to the siphonic action within B is now weakened and no longer able to hold down the bell B against the upward pull of the springs EE which have been extended by the downward movement of the bell; hence the springs litt the bell back. up to its original level as shown in full lines in Fig. l. leaving the liquid level in the tank at MM below the bottom of the bell B, which now loses all its liouid contents bv gravity. The air chamber within B and C down to O is new automatically recharged with air from the tank A. As the iniiow of liquid from the supplv N is continuous the same action as described will repeat itself continually.

If it is desired to operate this invention non-automatically the incoming lioui d must not be allowed to reach the level of the line LL, but must be shut oit by some usual or suitable means such as a ball float and valve. Such an arrangement is shown in Fi 2. Beferring to said figure. when a liush is desired a. lowering of the bell B by pressure trom above or downward null from below or otherwise will cause the discharge ont the {iush tank A bv increasing the head of the liquid within said flush tank beyond the height of the liquid seal P. as shown in Fig. l, which height P cannot be increased. In Fig. 2 the regulation of the upper liouid level I/L is bv means ota ball iioat Q controlling a valve S in the inlet pipe N: and the downward movement of the bell B to tlush is produced bv pressure downwardly on a push rod B.- which is maintained in its upper or normal position by a spring E', which performs all the same functions as the springs E in Fig. l. Otherwise than in the initial steppt pushing` down on rod It. the operation is the same and depends on the same principles as before.

Obviously any other suitable mechanical or other means may be substituted for the mechanism shown, without departing from the scope and purview of this invention. It is to be understood that all non-essential modifications and additions to the specil'ic means herein described and illustrated are conteniplated as within the scope of the appended claims. Thus any desired or usual form of overflow may be provided in Fig. 2. Again, the bell B in Fig. 2 is not necessarily heavy enough to prevent its iioating, as it is held. against flotation by the pin T.

That is claimed is z 1. In an air bound siphon flushing appara tus, a movable bell -forming part of a siphon, and a yieldably resistant means utilizing the downward pull exerted upon the air bell by the discharging liquid during the flushing operation to store up energy, and means timed to release said energy to restore the air bell, after the flushing operation, to its normal position.

2. In an air bound siphon flushing appaatus. a pipe with a depending liquid seal, a movable bell forming a part ot the siphon and means utilizing the downward pull exerted upon said bell during the flushing action to draw the bell downward, means actuated thereby to store up energy and means thereafter actuated to release said energy and apply the same to restore the bell to its normal position.

3. In an air bound siphon lush tank, a tank, a pipe extending downwardly out of the tank and turned upwardly to form a liquid seal, said pipe also extending upwardly above the bottom of said tank, a bell positioned over and enclosing the upper part of said pipe within the tank, said bell being held in normal position by yieldably resistant means which will permit of the downward motion of the bell when acted on by siphonic pull and restore the bell to its normal level after the discharge of the tank.

4. In an air bound siphon flush tank, a tank, a pipe extending downwardly out of the tank and turned upwardly to form a liquid seal, said pipe also extending upwardly above the bottom of said tank, av bell positioned. over and enclosingr the upper part of said pipe within the tank, sai d bell being held in normal position by yieldably resistant means which will permit of the downward motion oi the bell when acted on by siphonic pull and restore the bell to its normal level after the discharge of the tank, and means for nonautomatically discharging the tank by downward motion of the bell when the tank contains liquid almost enough to cause flushing automatically.

In testimony whereof I hereunto aiiix my signature.

HARMON D. MOISE.

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