US1436350A - Flushing tank - Google Patents

Description

A. J. LUND BERG. FLUSHING TANK. APPLICATION FILED FEB. 25, 1920.

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FLUSHING TANK.

Application filed February 25, 1920. Serial No. 381,285.

To all whom it may concern:

Be it known that T, ALFRED J. LUNDBERG, a citizen of the United States, residing at the city and county of San Francisco and State or" California, have invented a new and useful improvement in Flushing Tanks, of which the following is a specification.

This invention relates to a flushing tank and especially to a siphon priming attachment therefor.

One of the objects of the present invention is to provide a simple, substantial and easily operated mechanism whereby the filling and discharging of flushing tanks and the like may be actuated, and especially to provide a mechanism whereby the use of submerged Valves, etc., which might cause leakage, may be eliminated. v p

7 Another object of the invention is to provide a siphon member through which the flushing water is discharged, and in conjunction therewith means for automatically raising the water level in the tank to prime the siphon member when discharging.

Another object of the invention is to provide means to prevent flushing or emptying of the tank until it is full and able to make a complete flush.

Further objects will hereinafter appear. The invention consists of the parts and the construction, combination and arrangement of parts as hereinafter more fully described and claimed, having reference to the aecompanying drawings, in which- 7 Fig. l is a central vertical longitudinal section through the flushing tank showing the mechanism employed.

Fig. 2 is a cross section of the tank. Referring to the drawings in detail, A indicates a tank of suitable constructiomand 2 a discharge pipe connected. therewith. This pipe extends upwardly into the tank and terminates in the siphon member 3. The upper bend of the siphon is flattened as at 4:, and means are provided for priming the siphon whenever it is desired to empty the tank for flushing purposes. The means employed consists ofan auxiliary tank B, an inlet valve 5., a float 6 whereby it is actuated,

inany suitable manner and is connected with a source of. water supply by meansof.

a ipe 8. The valve is normally closed as shown 9 by means of a float actuated lever 10. This lever is pivotally mounted as at 11 on an extension 12 formed on the valve casing, and it 1s provided with a fork-shaped rocker arm 13 which straddles a stem 14,

connected with the valve 9; movement of the the auxiliary receiving tank B. This tank is pivotally mounted on brackets 17, and the pivotal connections are eccentrically positioned to permit overbalancing or tilting movement of the auxiliary tank when this is filled. The auxiliary tank is normally held in position by the latch 7, said latch engaging a shoulder or lug 18 formed on the side of the tank, and the tank is also held in upright position by a secondary latch 19, the function of whlch will hereinafter be described. The operation of the mechanism employed will be as follows:

When the main tank A is empty, it is ob- .vious that the float 6 will rest on the bottom of the tank and that the lever 10, to which it is attached, will assume a tilted position.

This movement or position of the lever 10 and the float 6 opens the valve 9 and thereby permits water to enter through pipe 16 and discharge into the auxiliary tank 13.

This tank when filled overflows and fills the main tank A and the water will continue rising therein until the float reaches a predetermined position. The gradual rise of the float and lever naturally closes the valve 9 and complete closure of the same is obtained when a desired water level is reached. If it is desired to empty the tank, it is only it necessary to liftupwardly on a lever 7 which forms an extension of the latch 7.

This lever and latch are pivotally mounted as at 20 on a bracket member 21, and movement of the lever 7 in an upward direction will therefore pull the latch out of engagement with the lug 18 and thereby permit the aux1l- V iary tank to tilt about'its pivotal connection and a latch 7. The inlet valve is constructed mit an overflow through the siphon 3.. This.

vention. I further wish it understood that, various changes in the construction, com

overflow causes priming of the siphon and the entire contents of the main tank A will therefore be discharged. The float 6 will therefore drop and the inlet valve 9 will again open and refill the tank.

By referring to Figs. 1 and 2, it will be seen that a second latch 19 has been provided. This latch is also pivotally mounted as at 22 on a bracket 21, and it is provided with a lever extension 23. The main float lever 10 is also provided with an extension as shown at 24. The upper end of this extention is hook-shaped as at 25 and engages the outer end of the lever 23. When the float reaches its lowermost position, that is,

when the tank is empty theopposite'end of the lever or the extension 24 will reach a raised position indicated by dotted lines as at 26. This permits the latch 19 to swing into engagement with the lug 18 and thereby locks the auxiliary tank against tilting movement about the pivotal connection 17, that is a counterweight27 is placed. on the tank and this counterweight returns the tank to normal horizontal position the moment it has been emptied. The float simultaneously drops to the bottom of the tank and the opposite end of'the float lever is therefore raised, thereby permitting the latch 19 to swing inwardly and engage the lug 18. The auxiliary tank is therefore automatically locked against tilting movement while it, together with the main tank, is being refilled and it is therefore impossible to prime the siphon or empty the tank until'it has been completely refilled, that is the float 6 must reach its uppermost position before the projection 24: on the float lever becomes sufliciently depressed to swing the latch 19 out of engagement.

When latch 19 has been swung out of engagement by the rise of the float, it is obvious that latch 7 will support the tank and that if this is swung out of engagement by raising the lever 7 tilting movement of the tank will be permitted. It is therefore impossible to flush or empty the tank except after it has been completely refilled. This is of great importance as it reduces waste of water to a minimum.

' By referring to Figs. 1 and 2, it can be seen that the only valve employed is that indicated at 9'; that all connections with the bottom of the tank are stationary and permanent, and that leakage is entirely avoided.

A discharge valve is not required due to the siphon 3 employed and cost of construction' is therefore materially reduced. While a more or less specific form of inlet valve is employed, I wish it understood that any other form may be employed as this feature does not form an important part of the inbination andarrangement of part's may be made by those skilled in the art without departing from the spirit of the invention so claimed.

Having thus described my invention, what I claimand desire to secure by Letters Patent is-- 1. In a device of the character described, a tank, an inlet valve, a siphon actuated discharge pipe, means for priming the siphon for discharging, and means for preventing priming of the siphon and discharging of the tank when refilling the tank.

2. In a device of the character described a tank, a float actuated inlet valve, a siphon actuated. discharge pipe, means for priming the siphon for discharging, and means actuated by the float for preventing priming of the siphon and discharging of the tank whilethe inlet valve is open and refilling.

3. In a device of the character described a tank, a siphon actuated discharge pipe connected with the tank, means in the tank for raising the normal water level to prime the siphon for discharging, automatic actuated refilling means, and means actuated thereby for preventing priming of the siphon during the refilling operation.

4:. A flushing device comprising a main tank, a siphon discharge pipe connected therewith, an auxiliarytiltable tank mounted within the main tank, means for maintaining a predetermined water level in said tanks, a latch mechanism cooperating with said means to retain said auxiliary tank from tilting during the filling of said tanks, and a second latch mechanism independent of the first named latch, adapted to retain the auxiliary tank from tilting. after the desired water level is reached and being operable whereby theauxiliary tank may be permitted to tilt to empty the water contained therein into the main tank to raise the water level therein so as to prime the siphon and discharge the water in the main tank therethrough. V

5. In a device of the characterdescribed a tank, a siphon actuated discharge pipe connected therewith, an auxiliary tank mounted within the main tank, means for maintaining a normal water level in the main tank and in the auxiliary tank, means for holding the auxiliary tank against tilting, said means permitting tilting of the auxiliary tankto empty its contents into the main tank and thereby raise the water level to such an extent that overflow and priming of the siphon is started, means for automatically returning the auxiliary tank to normal position, automatic actuated means for refilling means for locking the auxiliary tankagainst tilting movement while the main tank is being refilled.

6. Ina device of the character described a mainwank, an auxiliary" tank pivotally' the auxiliary tank and the main tank, and

mounted therein, said pivots being eccentrically positioned to permit tilting of the tank, a siphon actuated discharge pipe connected with the main tank, an inlet valve adapted to discharge water into the auxiliary tank and by overflow fill the main tank, a float actuated valve adapted to close the supply through the inlet valve when a predetermined level is reached in the main tank, means for holding the auxiliary tank against tilting and for releasing the same, means for automatically returning the auxiliary tank to normal position after it has been filled, and means actuated by the float member for locking the auxiliary tank against tilting movement while the auxiliary tank and the main tank are being refilled.

7. In a device of the character described a main tank, an auxiliary tank pivotally mounted therein, said pivots being eccentrically positioned to permit tilting of the tank, a siphon actuated discharge pipe connected with the main tank, an inlet valve adapted to discharge water into the auxiliary tank and by overflow fill the main tank, a float actuated valve adapted to close the supply through the inlet valve when a predetermined level is reached in the main tank, means for holding the auxiliary tank against tilting and for releasing the same, means for automatically returning the auxiliary tank to normal position after it has been tilted, a latch plvotally mounted within the tank, a lug on the auxiliary tank with which said latch is adapted to engage, and a lever on the latch adapted to be engaged by an extension on the float actuated lever, said extension on the float actuated lever adapted to hold the latch in position to prevent tilting of the auxiliary tank while said auxiliary tank and main tank are being refilled.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ALFRED J. LUNDBERG. Witnesses:

S. I. CLARK, LINDSEY CAMPBELL.

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