US1660010A

US1660010A - X - -sink straotee

Info

Publication number: US1660010A
Authority: US
Publication date: 1928-02-21
Anticipated expiration: 1945-02-21

Description

Feb. 21, 1928; w 0 1,660,010

' G. J. LEMM SINK STRAINER Filed April 15, 1927 Fig. 5.

GoH/vard J Lemm Patented Feb. 21, 1928.

eo'r'rmmn J. LEMM, or reasons, waszrmeron.

SINK STRAINER.

Application fiiealr rn 13,

This invention relates to devices adapted.

to close the drain of the sink when it is desiredto hold the water therein and to act as a strainer when the water is running freely therethrough. The objects of this invention are first, to provide a device which will fit in any drain pipe opening of approximate corresponding size; second, whichwill pre vent leakage around the strainer when the said opening is oversize; third, which will provide a suitable bearing to center the disk valve thereof; fourth, which will hold the said disk valve tightly down in place, thus preventing any disk and the strainer; fifth, in which the respective parts may be stamped from sheet metal; and sixth, whichis cheaptomake and to assemble, easy to operate, and effective in use.

I attain these and other objects by the devlces and arrangements illustrated in the accompanying drawings, all made on an enlarged scale, in which :'Fig. 1 is a section of a sink drain showing my improved strainer mounted therein, taken on the line 11 in Fig. 2; Fig. 2 is a. plan view thereof; Fig. 3 is an elevation of the disk valve; Fig. 4: is an elevation of the strainer, a part thereof being shown insection; Fig. 5 'is a plan view of the outer ring; Fig. 6 is an elevation thereof, showing a part thereof in section; Fig. 7 is a sectionof the spring washer; and Fig. 8 is an elevation of the securing rivet.

Similar numerals of reference refer to similar parts throughout the several views.

In practice, it is foundthat the diameter of the orifice ofthe drain pipe 1 varies within comparatively widelimits and therefore, if a strainer is made smallenough to enter a smaller such orifice, then there is excessive leakage around such a strainer if inserted in a larger such orifice. Also the flange or shoulder formed in the orifice of the drain pipe 1 isusually very small and the internal diameter thereof may be greater than the external diameter of thestrainer and therefore there would be nothing to hold the strainer inplace.

I have overcome both of these practical objections by means of the ring illustrated in Figs. 5 and 6. This ring 2 is split as shown in Fig. 6 and is preferably made of spring material and curved to a larger diameter than the maximum allowed for the particular size of strainer. The split is grit coming between the 1927. Serial No. 183,291.

made with a horizontal portion 3 as shown in said Fig. 6, thereby preventing leakage of Water downward through the split. The ring 2 is provided with an inturned flange 4: as shown in the drawings. This ring is manually compressed and forced into the orifice of the drain pipe 1 and rests on the shoulder therein.

The strainer body comprises a plate or disk 5, having openings 6 arranged 'around its center,- and having a downturned flange 7 around its outer circumference. This flange 7 is provided with a wide shallow groove 8 adapted to receive a packing material 9 therein. The center of the disk 5 is depressed or countersunk as shown at 10 in Figsal and 4:. This strainer body is inserted'into the inside of the ring 2, the packmg material 9 filling the space between the ring and the strainer body, thereby preventing any leakage through the space be tween these parts. The lower edge of the flange 7 of the strainer body rests on top of the flange 4 of the ring 2.

The valve disk 11 is composed of a circular piece of sheet metal having holes 12, corresponding with the above holes 6 in the disk 5 of the strainer body, punched therein. One such hole, however, is punched to benda part of. one side upward to form an operating lug 13. The center of the circular disk 11 is countersunk as shown at 14.. The said countersunk portion 1a fits into the countersunk part 10 of the disk 5. A central hole passes vertically through both of the said

countersunk portions

10 and 14.

The two parts 5 and 11 are secured to gether by means of a rivet 15, which passes upward through the holes in the said countersunk parts and which is riveted into the countersunk portion 14 of the disk 11. In practice, however, it is found better to pr0- vlde a spring pressure between the plates 5 and 11, in order to hold them tightly together and prevent any grit entering between them and yet permitting the disk 11 to have free motion on top of the disk 5. In order to secure this resilience in the simplest and cheapest Way I provide a spring washer 16,, such as is illustrated in Fig.7, between the head of the rivet 15 and the lower end of the countersunk part 10 of the disk 5, thus drawing the disk 11 downward thereon. This spring washer 16 comprises a thin piece of spring material, such as brass, having its outer edge split into sections and rolled back towards the center to form a circular ring of a substantially circular section and having a hole in its center. iiVhen the rivet 15 is insorted through the opening formed by the rolled back outer section of the said washer and through the hole therein to bring its head in contact therewith, and is then passed through the holes in the

countersunk parts

10 and 14 and is pressed to compress the said spring washer and is then riveted in the countersunk part 14, the said parts 5 and 11 are securely fastened together with a resilient pressure derived from the compression of said spring washer.

Thus it will be seen that l have provided a device which can be fitted into the orifice of any drain pipe of corresponding size and which will be held therein without leakage of any water therepassed, which will be firmly supported within the orifice of the drain pipe, and which will open or close the passage therethrough by the rotation of the disk 11 on the disk 5.

It is, of course, understood that many changes in the details ot'the construction of such a device maybe made without departin; from the idea of my invention as outlined in the appended claims.

It "is to be understood that, in such cases where the valve action is not desired, the disk 11 may be entirely'omitted, in which casethe openings 6 in the. disk 5 will always permit the water to pass therethrough.

Having therefore described my invention what I claim is r 1. In a sink strainer, the combinationot a split ring adapted to be compressed to lit in the orifice of the drain pipe; a flange extending inward therefrom; a strainer body, comprising a disk having openings therein and a flange around its circumfen once, said strainer body being adapted to rest on said inward extendin flange of said ring; and packing means interposed between said ring and said flange of the strainer body.;

2. In a sink strainer the combination of the strainer body comprising a disk having countersunk portion of said strainer body disk; at rivet passing through the centers or said countersunk portions and securing the valve disk to the strainer body disk; and a resilient washer interposed between the end of said rivet and said countersunk portion strainer body being adapted to rest on said inward extendingsplit ring flange; a valve disk provided with openings therein, corresponding with and complementary to the openings in said strainer body; a riveted pivot means connecting said valve disk to said strainer body disk and adapted to permit the valve disk to turn on the strainer body disk; andspring means interposed between said riveted pivot means and said strainer body disk whereby the valve disk is resiliently held in contact with said strainer body disk.

4. In a sink strainer, the combination of a. split ring adapted to be compressed to fit in the orifice of the drain pipe, the surfaces of said ring, at the point of separation, forming a sliding sealed joint; a strainer body comprising a disk having openings therein and a flange around its circumference, said strainer body being adapted to engage and to be supported by said split ring.

5.. In a sink strainer, the combination of a strainer body comprising a disk, having openings therein and provided with a downwardly extending circumterentially grooved flange around its periphery; with an inwardly compressible sealing ring adapted to be compressed to lit in the orifice of the drain pipe and lying partially in said circumferentialgroove in said flange.

6. In a sink strainer, the combination of a strainer body comprising a disk, having openings therein and provided with a. downwardly extending circumferontially grooved flange around its periphery; with a self expanding sealing ring adapted to be compressed to enter the orifice of the drain pipe and to expand itself into sealed contact therewith, and extending inward therefrom to fit and support the said strainer body flange.

GOTTHARD J. LlElil'M.

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