US 2738851 A
Description (OCR text may contain errors)
March 20, 1956 J, A, WARCH 2,738,851
FLUSH TANK SILENCER Filed OG. 21, 1952 ff 3.5 J'oH/v A. VVA/PCH.
United States Patent O FLUSH TANK SILENCER John A. Warch, Woodlawn, Md. Application October 21, 1952, Serial No. 315,875 3 Claims. (Cl. 181-49) This invention relates to filler tubes and more particularly to those used to fill the water tanks used with flush toilets.
In the conventional water tanks used with hush toilets the operation on the filler valve in supplying water to the tank is controlled by a float operated valve which turns on or oif the water supply, when the water` in the tank reaches a predetermined level. The water passes from the supply valve through an open ended pipe into the water tank and is quite noisy.
lt is therefore an object of this invention to provide a device to be attached to the float operated supply valve that will allow the water from the supply valve to enter the Water tank without the objectionable noises produced during the filling cycle.
It is an additional object of this invention to provide a new and improved means for filling a reserve water tank for use in flushing toilets, that will be quieter than the present liller pipes.
It is a further object of this invention to eliminate the noise of the rushing water when filling a water tank used for flushing ush toilets.
It is a further object of this invention to provide a new and improved silencer for use on tloat operated valves used to control the water supply to and from the tank, that will be readily attachable 4to present float operated valves to convert them from the present noisy type.
Other objects of the invention will become apparent as the invention is more fully set forth.
For a better understanding of the invention and the objects thereof, reference is made to the accompanying drawings wherein a particular form of the invention is disclosed by way of example. The drawings when used in conjunction with the following description explain the structure and operation that embodies the principles of the invention and is emphasized in the appended claims.
Referring to the drawings:
Figure l is a side elevation of a oat operated filler valve with a silencer embodying this invention attached thereto;
Figure 2 is a plan view of the ure 1;
Figure 3 is a sectional view of the silencer shown in Figure l;
Figure 4 is a plan view of a disc used in this invention as seen along line 4-4 of Figure 3; and
Figure 5 is a plan View of another disc as seen along line 5 5 of Figure 3.
Similar reference characters refer to simila-ntparts throughout the drawings.
In the construction shown in the drawings the water tank is provided with a cover 11 and encases a conventional lloat operated valve 12 and float 13 operated through conventional linkage to control the passage of water through the pipe 14 to the tgpk in the usual manner. A silencer 15 is attached to thsgpipe 14 at the op.
silencer shown in Fig posite end from the valve 12, and preferably comprises a casing 16 having its upper end restricted and threaded at 17 to receive the pipe 14. The lower end of the casing 16 is ythreaded at 18 to receive a screw cap 19. The screw cap 19 is provided with a hole 20 to allow the water to discharge therethrough and the c ap is used to fasten the silencing element 21 in the casing. The silencing element preferably comprises a stud 22 with threads 23 on its surface to receive threaded separator collars 24 used to attach and hold the discs 25, 26, 27 and 28 in spaced relationship with each other and to tighten them against the head 29 forming a part of the stud 22. The discs 25, 26, and 27, iit inside the casing 16 and the disc 28 is larger in diameter and is clamped against the end of the casing 16 by the screw cap 19. The holes 30 in the disc 25 are positioned in a single row and are preferably about one-eighth of an inch in diameter. The holes 31 in the disc 26 are about three thirty seconds of an inch in diameter, and the holes 32 in the disc 27 are preferably three sixty-fourths of an inch in diameter. The holes 31 and 32 in discs 26 and 27 are also preferably arranged in a single row. The holes 33 in the disc 28 are smaller and preferably arranged in two rows and are in this illustration about one-thirty-second of an inch in diameter. Although the diameters of the holes and the number of rows of holes used are given in this example it is not desired to limit this invention to the diameters and number of holes mentioned because it has been found during the experiments conducted, that the diameter and number of the holes used in the discs will vary to suit the different water pressures encountered during its use. The collars 24 may be spacer collars without threads, with the last one threaded to clamp them together.
In the assembly of the unit shown, the disc 28 is positioned on the stud 22 against its head 29 and a collar 24 is screwed on the stud to tighten the disc 28, the disc 27 is slid over the stud 22 and another collar 24 tightened against it, the disc 26 is then slid over the stud and a third collar 24 screwed thereon the disc 25 is then positioned on the stud and the fourth collar 24 screwed on the stud 22 to tighten the disc 25 in place. The element 21 is then inserted in the casing 16 and the cap 19 screwed into place to hold the element 21 about central in the casing. The unit is then screwed on the pipe 14 and is ready for operation.
While but one general form of the invention is shown in the drawings and described in the specification, it is not desired to limit this application for patent to this particular form as it is appreciated that other forms could be made that would use the same principles and come within the scope of the appended claims.
Having thus described the invention, what is claimed is:
l. A silencer comprising a hollow cylindrical casing open at both ends, a disc closing one of said ends, said disc having a central opening therethrough, an open ended screw cap threaded on the closed end of the casing and retaining the aforesaid disc in place at the end of the casing, a threaded stud extending through the casing to a point short of the open end of the casing and passing through the central opening in the disc, said stud having a head resting against the underside of the disc, a plurality of centrally apertured circular discs spaced along the length of the stud and extending peripherally to the inner wall of the hollow casing and of smaller diameter than the first mentioned disc, and a plurality of collars between the discs threadedly engaging the stud, all of the aforementioned discs having openings therethrough varying in diameters from the lowermost to the uppermost of said discs, all of said collars when serially threaded on the stud from the lowermost to the uppermost interacting as lock nuts and maintaining the ciosing disc in tight engagement with the head of the stud.
2. A silencer as set forth in claim 1 including threaded meansv at the open end of the casing for attachment to l a pipe.
References Cited inthe le of this patent UNITED STATES PATENTS Loper June 13, 1911 Becker June 6, 1916 Flockhart June 12, 1917 Webb July 5, 1921 Yavitch Apr. 15, 1941 FOREIGN PATENTS Great Britain Sept. 12, 1917 Great Britain July 11, 1918