US1224712A - Sink-drain. - Google Patents

Description

R. CLARK.

I SINK DRAIN. APPLICATION HLED AUG.22| 19H.

Patented May 1, 1917.

Z0 1 Wm.

sin ks.

SIN K-DRAIN Specification of Letters Patent.

Patented May i 1917.

Application filed August 22, 1914. Serial No. 858,147.

e it known that I, Ronnn'r CLARK, a citizen of the United States, residin in the city of Bridgeport, county of Fair-field, and State of Connecticut, have invented certain new and useful Improvements in Sink- Drains, of which the following is a full, clear, and exact description.

This invention relates to a drain or waste fixture, especially applicable to kitchen but my improvements to this particular application.

he prnnary object of the invention is to provide a simple, etlicient drain fixture. in which. the strainer may be very readily inserted into, and removed from, the outlet bushing or shell in the sink bottom, and wherein an ordinary stopper of rubber, or the like, may be readily substituted for the strainer when it is desired to fill the sink with water. It is also proposed fixture of the type indicated in which the locking of the strainer in operative position, and its removal from operative position. are facilitated by the use of a bayonet joint of special form. It is further proposed to provide a drain fixture in which a bayonet joint for locking a strainer in position in the mouth of the bushing does not interfere in any way with the use of an ordinary rubber stopper, when the strainer is removed.

these and other ends, the invention consists in the novel features and combinations of parts to be hereinafter described and claimed. 1

In the accompanying drawing.

Figure 1 is a fragmentary side elevation of a drain fixtureembodying my improvements;

Fig. 2 is a top plan view of the same, showing the strainer locked in position in the shell or bushing;

Fig. 3 is a section on line 33 of Fig. 2, showing the locked position of the strainer;

*ig. 4 isa section similar to Fig. 3, but with the sectional part of the strainer turned to a position to release and elevate the strainer; V

Fig. 5 is a side elevation of the strainer, detached; and

Fig. 6 is a section similar to Fig. 3, showing an ordinary rubber stopper fitted in the'bushing in place of the strainer.

bushing, cup,

are not limited to furnish a of the bushing very gradually, for

the drawing, 10 is an outlet shell or plug. adapted to be secured in the usual manner in an opening in the bottom of the sink. and having the usual substantially horizontal annular flange 11. adapted to overlie the bottom wall of the sink around the opening formed in the latter. A-nut 10 engaging the screw threads Referring to 12 on the exterior of the bushing. is adapted to clamp the bushing in place, and the lower end of the bushing has secured thereto in any suitable manner the customary waste pipe 13, as shown in Fig. 1. This bushing is adapted to receive a strainer 14 (Fig. 5) which may be locked in the upper end of the same. with its upper surface approximately flush with the flange 11. In the form shown, the strainer 14 is adapted to be accommodated in a special seat 15. formed at the upper part of the bushing or shell. for which purpose the upper end portion of the bushing is made of greater diameter than the lower portion. The wide upper portion is connected with the relatively narrow lower portion by means of an approximately horizontal wall 16 forming a shoulder to seat th 2 annular vertical wall 14 with which the strainer is provided. By preference, the plug or bushing will. be made of sheet metal. and the shoulder 16 will be formed by a suitable drawing operation.

In the embodiment which I have selected for illustration, the bayonet joint for lock ing the strainer 14 in the seat of the bnslr ing is constructed as follows: The wall of the upper. wider provided with a series of inwardly disposed projections or teats 1?. In the form shown, these projections or teats 17 are three in number, but of course this is not essential. and they are formed by displacing the metal of the bushing wall in an inward direction. but this likewise is not always essential. In any event, the'teats or projections are relatively shallow, and merge into the'side wall a. purpose hereinafter pointed out. The depending annular side wall 14 of the strainer 14 is provided with a plurality of notches 18 adapted to cooperate with the respective projections 17 in such a manner as to form a bayonet joint, so that the strainer may be locked in the bushing in an obvious manner.

portion of the bushing In looking the strainer, the latter is given a partial rotation or turning movement relative to the plug or bushing, so that after the mouths of the notches 18 pass over the respective projections 17, the strainer may be turned to engage the projections in the closed ends of the notches, whereby upward displacement of the strainer is prevented. 'lo release the strainer, the latter is turned in the opposite direction until the mouths of the notches come into register with the respective projections 17, after which the strainer may be readily lifted out of place. Furthermore, the bayonet joint is preferably so constructed that it is effective in pulling the strainer down into its seat when the. strainer is applied. Moreover, what is more important, the bayonet joint is preferably so constructed that whenthe strainer is partially turned to release the same, said strainer is automatically lifted to a certain extent, so that its upper surface will be raised substantially above the level of the sink bottom, thus facilitating the removal of the strainer. In order to effect these ends, each of the notches 18 is slanted with respect to the vertical, so as to provide an upper inclined edge 18, and a lower inclined edge 18*. \Vhen the strainer. is in the released position shown in turned clockwise, the lower inclined surface '18, by engaging the corresponding projection 17 pulls the strainer down into its seat 15. as the strainer is turned to engage the projections in the closed ends of the notches. This looks the strainer, as shown in Fig. 3, and in this position, each projection or teat 17 engages a relatively enlarged seat 18 at the closed end of the oorres onding notch. When it is desired to unloc the strainer, the same is turned in a counter-clockwise direction, whereupon the upper inclined wall 18' of each notch will ride on the corresponding projection 17 in such a manner as to raise the strainer relative to the bushing, as shown in Fig. 4. When the strainer is in the position for each notch 18 to pass clear-of the corres onding teat or projection, the.' upper sur be considerably elevated relative to the bottom of the sink, and thus the removal of the strainer from facilitated.

For the purpose of permitting the necessary turning movement of the strainer, the latter 'is preferably provided with a dia metrical slot 19, into which a knife, or other tool, maybe readily inserted. By inserting the knife in the slot 19-, and turning the strainer in the proper direction, the latter may be either locked or released.

Preferably the strainer will be formed of a sheet metal plate, having a plurality of perforations in its upper surface, as shown, the upper portion being integral with the the bushing is very much nary rubber stopper adapted to engage Fig. 4:, and s ace of the strainer will downturncd side wall 11, but in certain aspects of the invention this is not essential. \Vhen it is desired to fill the sink, an ordifor the strainer 14. The stopper 20 will fit the seat 15 when the strainer is removed, as shown in Fig. (3, and the yielding nature of the stopper will permit it to conform very to the small teats or projections 17 on the inside surface of the seat 1:"), so that there will be no leakage. By preference, the side wall of the seat 15 will-have a very slight bevelor taper, as shown, but this is not necessary in all cases.

It will be observed that the inwardly directed shoulderlfi underlies the stopper or the strainer disk when it is inserted into the closely seat 15. The peripheral wall or other deon the strainer disk is the surface of the stopper scat above and in line with the shoulder, the construction preferably being such that when the depending portion on the periphcry of the strainer disk is substantially in contact with the shoulder 16, the upper surface of the strainer disk is substantially flush with the lateral flange on the'bushing. \Vith this construct-ion the bayonet lock or its equivalent can be dispensed with in some cases if desired, in which event the shoulder will hold thestrainer diskin the'proper position vertically with respect to the bushing.

By the construction described, the drain fixture may be produced, very inexpensively from sheet metal and yet it is strong and durable, and presents the'advantage of permitting the substitution of a radially insertible and removable strainer for an ordinary stopper' or plu and vice versa. The mere turning of the strainer relative to the projections on the bushing raise. and lowers it on its seat, and yet theconstru tion is Such that an ordinary rubber stopper will readily fit the bushing without leakage when the strainer has been taken out.

I do not claim broadly 'herein the combination of a bushing adapted to extend through an opening in the bottom of the sink, said bushing having a smooth substantially upright seat at the upper end or mouth thereof adapted to make water tight contact with an ordinary plug or stopper having a beveled seating surface, a strainer adapted to fit the upper portion of said stopper seat when the plug or stopper is removed, said strainer being of a diameter substantially equal to the maximum diameter of the stopper seat, means for detachably engaging said strainer with a part of the bushing tosecure the strainer detach ably in position, and a laterally projecting flange on the upper end of the bushin which overlies the bottom wall of the sink around theopening tions the bushing with respect to the sink pending portion- .20 may be substituted in the latter, and posi-.

- the stra iner securing means being stopper seat, a downturned on said strainer when the stopper is in use as well as when is in use, as claimed in my applicationSerial No. 817,916.

Without limiting myself to the construction shown, I claim:

In a drain fixture such as described, the combination of a bushing having a laterall projecting flange on. the upper end thereo a nut engaging said bushing to clamp said flange'a'gainst the upper surface of the sink bottom, said bushing upper end or mouth thereof provided with a substantially smooth ordinary plug or stopper, a strainer disk of 1 a diameter substantially equal to the diameter of the upper said stopper seat, and means for securing said portion of detachably strainer in said seat without interfering with a water tight fit of the said seat when stitutcd for plug or stopper in said plug or stopper is subthe strainer, said strainerso constructed that the strainer is released from the bushing, for removal, by turning the strainer in said seat; substantially as described. L. In a drain fixture for sinks and the like, the combination of a bushing having a laterally projecting flange on the upper end thereof, adapted to overlie the bottom Wall of the sink around the a nut to clamp the said flange against the upper surface of the sink bottom, said bushing having a Seat at the upper end or mouth thereo '1- proyided with a substantially smoot surface tov receive an ordinary plug diameter subin said seat when said plug substituted for described. 3. In a drain fixture for sinks and the like, the combination of a bushing having a laterally projecting flange on the upper end thereof, adapted to overlie the bottom Wall of the sink around the opening in the latter, means carried by the bushing for clamping said flange against the bottom, said bushing having a seat at an ordinary plug or stopper, the surface of said stopper seat beingsubstantially smooth as to make a water tight fit with the stopper, a strainer disk adapted to fit the upper portion of said peripheral wall disk adapted to fit Within the smooth surface of said stopper seat, and means for detachably securing the strainer in said stopper seat Without interfering with having a seat at'the- A thereof to make water tight cred as it is turned the strainer; substantially as that the strainer the water tight fit of the stopper in said seat when it is substituted for the strainer, said strainer securing-means including small teats or projections on the seat surface merg-' ing gradually into the smooth portion of said surface, and cooperating with notches in the depending wall of the strainer, said notches so formed that the strainer is raised and lowered as it is turned on its axis; substantially as described.

4:. In a drain fixture for sinks the combination of a bushing adapted to extendthrough an'opening in the bottom of the sink and having exterior screw threads for a nut adapted to clamp the bushing in place in the sink bottom, a lateral flange projecting horizontally from the upper end of said bushing to overlie the bottom wall of the sink around the opening in said wall, said bushing having a smooth, substantially upright seat at the upper end or mouth and the like,

stantially throughout its area with an ordi- 'nary'plug or stopper having a slightly beveled seating surface, a strainer disk of a diameter substantially equal to the diameter of the mouth of the bushing, and means for detachably engaging said strainer disk with apartof the bushing to secure the strainer detachably n said seat when the stopper is removed, said engaging means being so constructed that the strainer is raised and lowin said seat substantially as described.

5. In a drain fixture for sinks and the like, the combination of a bushing, having a laterally projecting flange on the upper end thereof, adapted to overlie the bottom wall of th v latter, said bushing having a seat upper end thereof with receive an ordinary plug or stopper with a water tight fit, a strainer insertible into said seat when the stopper is removed, and means for securing said strainer in said seat, such is raised and lowered as it is turned on its axis, without interfering with the water tight fit of the stopper in said seat when it is substituted for the strainer, said securing-means including small teats or projections on the surface of the combined stopper and strainer seat 10- at the a nut on the bushing, to clamp a smooth surface to against the upper surface of the sink of the upper portion o l; the stopper seat adapted to be freely inserted into and removed from said stopper seat at any time when the stopper is removed, a wall depending from that portion of the strainer disk which is of maximum diameter, and means for detachably securing said strainer in said seat without interfering with a water tight fit of the plug or stopper in said seat when said plug or stopper is substituted for the strainer, comprising means for connecting said depending wall with the bushing, such that the strainer is locked and released by a turning moven'ient thereof; substantially as described.

7. In a drain fixture such as described, the combination of a bushing having a laterally projecting flange at the upper end thereof, means for clamping said flange bottom, said bushing having a substantially smooth upright seat at the upper end or mouth thereof to make water substantially throughout its area with an ordinary plug or stopper having a slightly beveled seating surface, a strainer adapted to fit within said stopper seat, and means for detachably securing said strainer in said seat without interfering with a water tight fit of the plug orstopper in said seat when said plug or stopper is substituted for the strainer, said strainer-securing means so constructed and arranged that the strainer is locked and released by turning it in said seat; substantially as described.

8. In a drain fixture for sinks and the like, the combination of a bushing having a laterally projecting flange at the upper end thereof, means for clamping said flange against the upper surface of the sink bottom, said bushing having a substantially smooth upright seat at the upper end or mouth thereof to make water tight contact substantially throughout its area with an ordinary plug or stopper having a slightly beveled seatin surface, the bushing being of reduced diameter closely stopper seat to present an inwardly projecting shoulder, a strainer disk adapted to fit within said stopper seat in place of said stopper, and means for detachably support ing said strainer disk in said seat without interfering with a water tight fit of the stopper in said seat when it is substituted for the strainer disk, said strainer disk-supporting means comprising a depending portight contact beneath said tion on the periphery of said disk adapted to engage the surface of said'stopper seat above and in line with said shoulder when the strainer is in the operative position; substantially as described.

9. In a drain fixture for sinks and the like, the combination of a bushing adapted to eX- tend through an opening in the bottom of the sink and having exterior screw threads for a nut adapted to clamp the bushing in place in the sink bottom, a flange projecting laterally from the upper end of said bushing to overlie the bottom wall of the sink around the opening in said Wall, said bushing having a substantially smooth upright seat at the upper end or mouth thereof to make water tight contact substantially throughout its area with an ordii'iary plug or stopper having a. slightly beveled seating surface, a strainer disk of a diameter substantially equal to the diameter of the mouth of the bushing adapted to fit within said stopper seat when the stopper is removed, sai bushing having a shoulder below and in close proximity to said stopper seat, and a depending portion on the periphery of said strainer disk adapted to engage the surface of said stopper seat and of such depth as to lie wholly above said shoulder when the strainer is substantially flush with said lateral flange; substantially as described.

10. In a drain fixture for sinks and the like, the combination of a bushing adapted to extend through an opening in the sink bottom, said bushing having a substantially smooth seat at the upper end or mouth thereof adapted tomake water tight contact with an ordinary plug or stopper, a strainer disk adapted to fit, said stopper seat when the plug or stopper is removed, means for detachably engaging said straincl' disk with a part of the bushing to hold said disk detachably in position, an outwardly projecting flange on the upper end of the bushin said bushingof reduceddiameter immediately below said seat so as to present an inwardly projecting shoulder which underlies the stopper or the strainer disk when itis inserted into said seat; substantially as described.

In witness whereof, I have hereunto set my hand on the 17th day ofAugust, 191- ROBERT CLARK.

Witnesses C, A. BALDWIN, EUG. O. MILLER.

Images