US2192498A

US2192498A - Hush tube

Info

Publication number: US2192498A
Application number: US229047A
Authority: US
Inventors: Morris J Hyman
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-09-09
Filing date: 1938-09-09
Publication date: 1940-03-05
Anticipated expiration: 1957-03-05

Description

- UNITED-'STATES ATENr oFFi-cs f- Patented Mar. 5, 1940 animes HUsH TUBE f Morris J Hyman, Philadelphia, Pa.l Application september 9,1938, seri-a1 No. 229,04*:A

1 Claim.

My invention relates to hush pipes as used in water closets and relates particularly to replacing broken-off hush pipes.

Water closets have a stream of water enter into a chamber, and the release of a control wall Valve permits the water to be discharged into the waste bowl. The water entering into the chamber passes through a control valve which is usually at the upper part of the chamber, and the opening or closing of the valve is controlled by a oat whereby the valve is closed when the float reaches the upper predetermined level. The incoming water passes through the valve and exhausts through an elongated hush tube which extends from the valve at the upper part of the chamber to the lower part of the chamber. The purpose of having the elongated pipe is to enable the water to descend from the upper part of the chamber to the lower part of the chamber with a silencing action.

The hush tube is generally composed of copper and is screw-threaded into a complementary opening in the valve. In the course of time, corrosion occurs at the junction of the valve and the hush tube, and the .corrosion causes thehush pipe to break from the valve. If the hush pipe is not replaced, the water will descend from the top of the chamber through the valve and drop noisily upon the bottom of the chamber.

To remove the valve and rethread the valve to receive a new hush tube is not only a laborious ytask but is diflicult: because if the hush tube has broken, there is also a` likelihood that the other parts of the valve are corroded. i

Heretofore, no devices have been constructed to replace the hush tube without removing the valve. v

It is, therefore, an object of my invention to provide a replacement for a corroded broken-oli:` hush tube.

A further object of my invention is to providey Fig. 1 is alfragmentary view of a Water-closet discharge tube I4 of the control valve B (Fig. 2)`

usually has a screw thread i6 therein to receive an end of a screw-threaded hollow pipe, and when the pipe corrodes and is broken off, a small section I8 of pipe remains in the valve discharge outlet i4. Since the water closet chamber I is' relatively narrow and the defining wall is high, it is almost impossible to remove the remaining broken piece of pipein order to insert av newly threaded hush tube.

I, therefore, case harden a tapered threaded bushing C havingfacets 2li thereon and `force a piece of metal tubing D into the bore of the bushing. The facets serve as surfaces whereby a wrench may be used to ltighten the bushing. I then turn the self-threading bushing C into the broken-off piece of tube I8 so that the end 22 of the hush tube is adjacent the 'bottom' of the chamber.

To provide an additional silencing action to the hush tube D, I may add a plurality of grooves to the lower end of the tube whereby the whirling water will trickle softly from the tube.

In Fig. 3 I show a second modication of my invention wherein a hush tube DI has vone end expanded to provide a flange 30', and the tubes diameter near the flange is reduced, as at 32, to receive the bore of the case hardened self-threading bushing CI. The bushing Cl is held tightly between the flange 30 and an inturned portion 34 of tube DI, and the bushings bore tightly receives the outer diameter of the reduced portion 32 of the tube. The major portion of the tube is of a diameter equal `to that of the replaced tube in order to permit water to properly pass therethrough. l

In Fig. 4 I show a third modification of my invention wherein a hush tube D2, preferably composed of copper, has an out-turned endlange 4H. Spaced from the anged end of the tube is a .threaded portion 42 upon which a threading courpling 44 interts.

' the Water closet.

Although my invention has been described in considerable detail, such description is intended as illustrative rather than limiting, since the invention may be variously embodied, and the scope of the invention is to be determined as claimed.

I claim as my invention:

A hush tube adapted to be joined to a broken piece of pipe in a vdischarge outlet comprising a tube, a portion of said tube adjacent one end having an inturned flange, the outer end of the tube outwardly turned to form a second ange, a selfthreading bushing positioned between the inturned and out-turned anges, and said thread being Vadapted to be connected into a broken-off piece of metallic pipe.

MORRIS J. HYMAN.