US1005713A - Flushing-valve device. - Google Patents

Description

R. W. KILLIN.

FLUSHING VALVE DEVICE.

APPLICATION FILED MAY 24, 1910.

Patented Oct. 10, 1911,

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RALPH W. KILLIN, OF MEMPI-IIS, TENNESSEE.

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Specification ofgLetters Patent.

Patented Get. 10, 1911.

Application filed May 24,1910. Serial No. 563,165.

To all whom it may concern:

Be it known that I, RALPH W. KILLIN, a citizen of the United States of America, residing at Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Flushing-Valve Devices, of which the following i is a specification, reference being had therein to the accompanying drawing.

This invention relates to flushing devices for flushing the bowls of water closets, and has especial reference to that class of flushing valve devices so constructed and arranged that the flushing valve when opened will remain open for an interval of time until the desired amount of water has been discharged into the bowl of the water closet, and the valve will then be gradually closed.

The invention has for its object to pr0- vide an improved flushing device of the kind referred to, so constructed and arranged that the flushing valve, after having been opened, will remain open for an interval of time, and will be gradually closed.

Referring to the accompanying drawings: Figure 1 is a view in longitudinal section of a flushing valve device constructed in accordance with this invention. Fig. 2 is a transverse section of the oil chamber. Fig. 3 is an enlarged detail view in vertical section and partly broken away of a portion of the oil chamber and the piston therein.

1 indicates a flushing valve chamber of any wellknown type, and as here shown, containing two flushing valves 2, mounted on a valve stem 3, the water supply being had through the pipe 4, connected to one end of valve chamber 1, water being discharged to the water closet bowl through the pipe 5, connected to one end of valve chamber 1, the other end of the pipe 5 being connected with the water closet bowl. The valve stem 3 projects through a st-ufling box 3, and into a hollow chamber 6, in the enlarged head 7, of the piston rod 8, the valve stem 3 extending through a removable head 9, screwed int-o the open end of the chamber 6. On the end of the valve stem 3 which projects partly into the chamber 6, is secured a nut 10, and a second nut 11 is secured on the valve stem 3, between the head 9 and the stufling box 3. The piston rod 8 projects through a stuffing box 8', on one side of a casing 12, which serves as an oil chamber, and is secured to apiston 13, located and movable in the oil chamber 12 which may be mounted on any suitable support.

The oil chamber 12 has one of its walls formed with a passageway latv extending the length of the oil chamber and having its ends opening into said chamher 011 opposite sides of the piston 13. The flow of the oil through the passageway 11 is regulated by a screw valve 15, having its inner end controlling the opening at one end of the passageway 11. The piston 13 is provided with a passageway 16, having a hinged cover 16 on one side thereof, so as to permit the passage of oil through said passage-way 16 in one direction of movement of the piston, but preventing it from passing through said passage-way in the opposite direction of the movement of the piston. The oil chamber 12 is further provided in one of its walls with a short supplemental passageway or groove 17 extending on each side of the piston 13 in its normal position, as shown in Fig. 1, whereby a small quantity of oil may pass from one side of the piston to the other in the initial movement of the piston. The piston 13 and its piston rod 8 are operated by means of a lever 18, pivoted to any suitable support, and having a forked end 19 engaging a grooved collar 20, screwed onto the threaded head 7. Eneircling the piston rod 8 and a portion of the head 7 is a coil spring 21, having one end bearing against one side of the casing 12 and its other end bearing against the collar 22, screwed on the threaded head 7.

The flushing valve device is operated as follows: l/Vhen it is desired to flush the bowl of a water-closet, the lever 18 is operated to move back the piston rod 8, which carries the head 9 back against the nut 10, the valves 2 ren'iaining closed. As the piston rod 8 is further moved back by the lever 18, the head 9 bearing against the nut 10, pulls the stem 3 and opens the valve 2, the nut 10, with the end of the valve stem 3 having been moved back to the dotted position shown in the chamber 6. In the entire backward movement of the piston rod 8, the piston 15.) is moved back to the position shown in dotted lines in the casing 12. As the piston 13 is moved back, it presses 'ainst the body of oil with which the 3g chamber is filled, and the oil is forced through the passage-way 16 into the space in the oil casing 12 in front of the piston. As the piston rod 8 is moved back, the coil spring 21 is compressed, and the tension of said spring causes a pressure to be made upon the body of oil which has passedto piston 13, drawn by the piston rod 8 to be slowly moved back to its normal position, being retarded by the volume of oil in front of it, and since there is a lost motion, owing to the valve rod 3 remaining stationary with its end in the chamber 6 of the head 7,

the valves 2 are not immediately closed, but remain open till the head 9 reaches the nut 11 on the shaft 3, when in the further movement of the piston rod 8, the stem 3 is op T erated to automatically close the valves 2 by the tension of spring 21.

It will be seen that in the outward movement of the piston 13, the oil on one side of the piston will not only pass through the passageway 14, but also the passageway 16,

the cover 16 permitting of the same, so that there will be little resistance by the oil to the piston as the piston is moved outward, but in the opposite direction of movement of the piston it will be retarded by the oil in front of it. If desired, water may be used instead of oil, but oil is preferred.

It will be seen that by means of this invention an eflective device is provided i whereby the flushing valve may be opened and remain open for a suitable length of time, until it is desired to close the same.

The groove 17 can be used to allow the piston free return and an immediate seating of the valves 2. The oil can freely flow from one side of the piston to the other through this passage 17 as soon as the piston reaches it, and the full force of the spring is centered upon the closing of the valves 2. If it is desired to retard the movement of the valve there need be no passage, or it may be ended at any desired point, as shown in Fig. 3. In the initial movement of the piston, the liquid naturally passes through the valved passage 16 as it offers the least resistance.

.By means of the construction of parts including the cylindrical piston rod with the elongated screw threaded head having a threaded collar adjustable thereon, and

dash pot, a piston located in said cylinder, a

piston rod connected with said piston and projecting out of said cylinder and having on its outer end an elongated head threaded on its exterior, and provided with a closed chamber into which projects the end of the stem of the flushing valve, a stop on the end of said stem in said closed chamber, and a stop on said stem on the outside of said chamber, a screw-threaded collar mounted on and adjustable on said eloniii gated head, a coil spring encircling a portion of said head and the piston rod projecting from the cylinder and having one end bearing against said cylinder and its other end bearing against said collar, a screwthreaded grooved collar adjustably mounted on said elongated head, and an operating lever connected with the grooved collar.

2. In a device of the character described,

a flushing valve chamber provided with ports each having a valve seat, a valve stem projecting into said chamber and having valves seated on said valve seats respectively, said valve stem projecting out of said chamber, collars at the outer end of said valve stem spaced apart from each other, a dash pot, a piston located in said dash pot, a piston rod connected to sald piston and projecting out of said dash pot, a collar on D said piston rod, a spring interposed between said collar and the dash pot, said piston rod being connected to said valve stem and adapted to alternately engage said collars on the. valve stem to reciprocate the same,

there being a lost motion between said pis- 5i a ton rod and said valve stem, and means for reciprocating said piston rod and piston.

In testimony whereof I hereunto afliX my signature in presence of two witnesses.

RALPH w. KILLIN.

lVitnesses:

WV. H. MoNoRmr, GEO. J. COLEMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C.

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