US2668962A

US2668962A - Combination strainer and stopper

Info

Publication number: US2668962A
Application number: US256700A
Authority: US
Inventors: Charles J Spector
Original assignee: Individual
Current assignee: Individual
Priority date: 1951-11-16
Filing date: 1951-11-16
Publication date: 1954-02-16
Anticipated expiration: 1971-02-16

Description

Feb. 16, 1954 c J P CTOR COMBINATION STRAINER AND STOPPER Filed Nov. 16, 1951 l4 5 v I; "I k 2G 1 1G 0 (0 (0 I] i If] 25 a J H 5 55 2| I V n I F 55 2 IO GHQ/245$ s ecme,

INVENTOR.

"ZZZ/4 Patented Feb. 16, 1954 UNITED ESTATES irrii,

2,668,962 I COMZBINKT-IONTSTRAINERMNDTSTQPBER l i I i;

Charles J. Specter, Los,Ang,eles, Calif... Application November 16, 1951, Serial No. 256.700 (Cl. .4 -287)-- 2 Claims. 1

This invention relates to plumbing equipment, and particularly to a combination sinkdrain strainer and stopper.

The use of strainers in sink drains is wellknown, some of which have various types of stoppers. The combinations'trainer and stopper to be described in detail hereinafter is easy 'to operate, simple, and economical to. manufacture, easy to clean and install, and is particularly eihcient in function. In one axial position, it functions as a strainer, and in another axial position, it functions as a stopper. Since the unit is locked in stopping position, it cannot be accidentally disturbed to release water in the sink.

The principal object of the invention, therefore, is to provide an improved combination sink drain strainer and stopper.

Another object of the invention is to provide an improved drain strainer which serves as a stopper when shifted to a different axial position.

A further object of the invention is to provide an improved combination drain strainer and stopper which is automatically locked in either position to which it is adjusted.

Although the novel features which are believed to be characteristic of this invention will be pointed out with particularity in the appended claims, the manner of its organization and the mode of its operation will be better understood by referring to the following description, read in conjunction with the accompanying drawings, forming a part hereof, in which:

Fig. 1 is a plan view showing a sink embodying two exact units of the invention.

Fig. 2 is a cross-sectional view of the invention taken along the line 2-2 of Fig. 1, and showing the position of the invention when functioning as a strainer, and

Fig. 3 is a view of the invention partially in cross-section taken along the line 3-3 of Fig. l, and showing the position of the invention when functioning as a stopper.

Referring now to the drawings, in which the same elements are identified by like numerals, a double sink 5 has two units of the invention shown at 6 and l. The units 6 and 1, unit 6 being shown adjusted to straining position, and unit I to stopping position, have outer cylindrical body shells ID with large diameter portions H and smaller diameter portions I2, to which draTiYi pipes are attached. Referring to a single unit, the section l2 may have its inner surface slightly tapered, while across the lower opening of section I2, .is .a spiderrliwithia .centralwguide ho'le Ztherein.

Th :upperwedge :ofsathe shell: has ;an-ranmflar. flange. .114, which rests on. the. :bottomzpf a isink orother type :of tub in xwhichwitais zusedx. The shell ,is held in :fixed: positiunsbyaa. collarwlfi. threaded on the-:upper-rportiomof :secticnxfl and tightened against. a rubber; or. :cork dsasket t6: bearing against: the rope-nineteen anti-Q friction ring I 1 between the collar l5 and gasket 16 is provided.

Within the section I l of shell I0 is a cylindrical basket type strainer 20 having bottom openings 2| and side openings 22 of different shapes. Diametrically attached to the inside of strainer 20 in any suitable manner, such as by welding at 24 and 25, are leaf

spring latch members

26 and 21, respectively, portions of which extend through holes in the strainer 20. As shown in Fig. 2, these portions rest on the upper surface of an annular detent 30 in the section II of shell Ill, thus holding the strainer locked in the position shown in Fig. 2. Fluid can now pass from the sink to the drain pipe.

In a center opening in the bottom of the strainer 20, is a handle 32 having a threaded portion 33, on which is threaded a disc 34 having an annular V groove therein in which is a washer 35, preferably of soft rubber, such as neoprene, and which may be slightly tapered. If the washer is not initially tapered, the shape of the V, which has an off center angle, provides the outer surface of the washer with the desired taper. Now, in the position shown in Fig. 2, the washer 35 is held out of contact with section I2 of shell l0. However, the washer may be lowered to contact section [2 and form a stopper for section l2 by pressing downwardly along the axis of handle 32. This pressure moves the

springs

26 and 21 inwardly as they pass detent 30, the springs then moving outwardly to the positions shown in Fig. 3 to lock the washer firmly in water stopping contact with the upper portion of the inner surface of section l2. A stem 31 passing through the central hole in spider 9 guides the strainer and washer 35 as they are moved axially.

Thus, the unit functions as a strainer when in the position shown in Fig. 2, and as a stopper when in the position shown in Fig. 3. To clean the unit or change washer 35, the unit is simply lifted from the shell. A new washer is easily substituted for the old one when it is necessary. Because of their cam action on the detent surfaces the

spring members

26 and 21 provide a positive means for locking the unit in both straining and stopping positions, and being particularly efiective in providing a tight seal of the washer against section [2. The changeover from one function to another is quickly accomplished by the axial repositioning of the strainer and washer.

Iclaim:

1. A combination strainer stopper assembly comprising a cylindrical body shell having connected coaxial sections of larger and smaller diameters, fastening means to attach said shell to a sink, said large diameter section having an annular inwardly extending detent, said smaller diameter section having a downward and inward tapering wall, a cylindrical basket strainer having apertures therein and adapted to be positioned in said larger diameter section, leaf spring latch members having only the lower ends of the springs fastened to the lower parts of said strainer, said latch members having outwardly protruding cam portions extending through holes in the wall of said strainer, said protruding portions normally biased outwardly by the action of said springs whereby said latch members when acting on the upper side of said detent will hold the strainer in an up position and when acting on the under side of said detent will hold and force the strainer in a down position, a handle fastened to said strainer to facilitate moving said strainer to either position, a stopper comprising a disc having a circumferential groove axially fastened to said strainer and a resilient washer member positioned in said groove, said protruding portions of said latch members acting on the under side of said detent to force said resilient member into contact with the tapered Wall of said smaller diameter section when said assembly is in said down position.

2. The invention according to claim l,'in which said resilient member has its outer edge tapered substantially the same as the taper of said smaller diameter section.

CHARLES J. SPECTOR.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 772,434 Schultz Oct. 18, 1904 1,760,659 Pasman May 27, 1930 1,937,609 Tompkins Dec. 5, 1933 1,950,817 Rossman Mar. 13, 1934 2,225,693 Frances Dec. 24, 1940 2,337,331 ilirschner Dec. 21, 1943 2,569,615 Link Oct. 2, 1951 2,617,997 Hiertz Nov. 18, 1952