US2270774A - Sink and the like - Google Patents

Description

Jill- 20, 1942. Jf s rrz 2,270,774

SINK AND THE LIKE origin Filed June 29, 1956 s Sheets-Sheet 1 3nventor haw; Sid/117:

Jan. 20, 1942. J. STANITZ 2,270,774

smx AND THE LIKE Original Filed Jun 29, 1936 s Sheets-Sheet 2 lmaentor Jacqlms 570/2171 Mummy Jan. 20, 1942. J, STANITZ 2,270,774

SINK AND THE LIKE Original Filed June 29, 1936 3 Sheets-Sheet 3 Zhwmtor chfiylms Jlaw'lz Patented Jan. 20, 1942 SINK AND THE LIKE Jacques Stanitz, Warren,

Ohio, assignor, by

mesne assignm nts, to Steel Plumbing Wares, Inc., Detroit, Mich, a corporation of Michigan Original application Ju 87,846, now Patent No.

no 29, 1936, Serial No. 2,121,672, dated June 21,

1938. Divided and this application May 6, 1938,

Serial No. 206,401

4 Claims.

The invention relates to sinks, wash basins and the like, formed from sheet or plate metal, and more particularly to the manufacture of such a product from a single sheet metal blank by stamping or drawing operations; and this application is a division of my copending application Serial No. 87,846, entitled Method of making sinks, filed June 29, 1936, now Patent 2,121,672, granted June 21, 1938.

Such a sink product includes a fluid receiving bowl and in some cases one or more drain boards and the bowl and drain boards terminate on three sides thereof in a rolled or turned rim formed as a part of a depending flange, and the fourth side thereof terminates in an upright back wall or splash back rearwardly flanged to form a continuation of the depending rim flange.

Such sink products are usually manufactured from steel and covered with a protective coating such as a vitreous enamel coating, and the present invention is a particular importance with respect to enamel coated sinks because no welding operations are performed during the manufacture of the sink, which if present, would cause difficulties in providing a satisfactory enamel coating. However the invention is not limited to the manufacture of enamel coated sinks because sink products may be made in accordance with the present invention from non-ferrous metals, stainless steel, Monel metal or the like.

Sink products have been made from single sheet metal blanks, for instance as shown in the Corrigan Patent No. 1,635,311 and in the Stanitz Patent No. 1,916,910. However sinks made in accordance with either of these patents require welding operations to be performed,

Sinks have also been made from single sheet metal blanks without requiring any welding operations to be performed in connection with the formation of the turned rim, thereof which is continuous with a splash back flange.

However the latter methodof making suchsinks is quite complex and involvesta large nurnber"of special operations substantially a1l'""o'f "which utilize complicated dies and require complicated press operations. Also, these operations are accompanied by considerable handling and turning of the sink product during the various stages of its manufacture.

Accordingly it is a principal object of the present invention to provide an improved method'of making sink products which overcomes the difficulties and eliminates many of the expensive and complicated, operations involved in prior practice. a"

and the flange Furthermore it is an object of the present invention to provide for the simplified manufacture of a sink product from a single sheet metal blank in which a fluid receiving bowl, together in some cases with one or more drain boards, terminates in a rolled or turned rim and in a comparatively high back wall or splash back; and in which the rim and splash back are each provided with a flange which extends integrally and coextensively around three sides of the bowl, and drain boards when present, and also around the ends and top of the splash back.

In addition, it is an object of the present invention to provide for the simplified manufacture of a sink of the type just described in which the advantageous stiffening ledge construction shown in my copending application Serial No. 678,823 (Patent No. 2,045,969) may be incorporated, without preventing the improved simplified manufacturing operations from being carried out.

Moreover, it is an object of the present invention to provide certain operations in the manufacture of a sink of the type described which enable the entire manufacture of sink product to be simplified; and which at the same time provide for the strengthening and stiffening of the resulting sink product between the table or generally horizontally extending portions thereof and the upright splash back or generally vertically extending portions thereof.

Moreover, it is an object of the present invention to provide for the simplified manufacture of a sink of the type described without any welding; which sink may be readily coated with a preferably acid resisting enamel coating of high quality so that the resulting coating is uniform in appearance and characteristics and is free from flaws which result if welded areas are present in the sheet metal base.

And finally, it is an object of the present invention to provide an improved sink or wash basin product of the foregoing character formed from a single blank of sheet metal without welds, which is very light in weight, which is inexpensive to manufacture, which has a pleasing and attractive appearance, which is very stifl and rigid, and which may be provided with a vitreous enamel coating free from defects.

These and other objects and advantages apparent to those skilled in the art from the following description and claims may be obtained by the sink product construction hereinafter described in detail and claimed, a preferred embodiment of which is shown in the accompanying drawings.

The foregoing object and advantages are also obtained by the methods, method step and operations of making such sink products hereinafter set forth in detail and claimed, preferred steps of which are shown in the accompanying drawings, and which may be stated in general terms as including drawing a single metal blank to form abowl or. basin with adjacent areas for drain board, splash back, and rim portions; drawing drain board and splash back portions adjacent to the bowl with a surrounding raised turned rim formed as a part of a depending flange, providing excess metal adjacent to the places in the rim where the splash back will extend upwardly from th bowl and drain board portions by drawing inverted V-shaped troughlike projections adjacent to said places in said rim, with the trough bottoms in the plane of the rim; trimming excess metal from the edge of the depending flange and from portions of said trough-like projections; bending the splash back and its flanged rim portions upwardly to extend generally vertically at right angles to the remaining generally horizontally extending bowl, drain board and flanged rim portions, on a line passing through the aplces of said V-shaped trough portions and lying preferable substantially in the plane of the rim thereby leaving substantially flat angularly disposed ears adjacent to the bend in the raised turned rim; bending said ears to a position coplanar with the rearwardly extending end flanges of the splash back rim and the depending or apron end flanges of the rim surrounding the bowl and drain boards; and then forming inturned flanges on said apron and a splash back flanges.

In the drawings,

Figure 1 is a fragmentary perspective view, partly in section, showing a single sheet metal blank from which the sink is made and showing the first bowl forming operation Fig. 2 is a similar view showing a succeeding operation for forming drain boards, a ledge, a splash back portion, a surrounding raised turned rim formed as a part of a depending flange, and inverted V-shaped trough portions adjacent to the place in the rim where the splash back will be bent upwardly;

Fig. 3 is a section taken on the line 3-4, Fig. 2;

'Fig. 4 is a section taken On the line 4-l, Fig. 2;

Fig. 5 is a view similar to Figs. 1 and 2 illustrating a succeeding trimming step;

Fig. 6 is an end view looking in the direction of the arrows 6-8, Fig. 5;

Fig. l is a perspective view similar to Figs. 1, 2 and 5, showing a succeeding bending operation in which the flanged splash back is bent upwardly along a line passing through the apices of the V-trough projectionsand the raised rim;

Fig. 8 is an end view of the partially completed sink shown in Fig. 7;

Fig. 9 is a fragmentary sectional view taken on the line 9 -3, Fig. 8;

Fig. 10 is a perspective view similar to Figs. 1, 2, 5 and 7 showing a succeeding ear bending operation Fig. 11 is an end view of the substantially completed sink shown in Fig. 10:

Fig. 12 is a perspective view of the completed sink;

Fig. 13 is a section looking in the direction of the arrows l3-l3, Fig. 12; and

Figs. 14 and 15 are enlarged fragmentary sections taken on the lines 14-, and l5-l5, respectively, in Fig. 12.

Similar numerals refer to similar parts throughout the various figures of the drawings.

Referring flrst to Figs. 12, 13, 14 and 15, the improved sink product i generally indicated at It and may include'a fluid receiving bowl l1, having a bottom wall l8 provided with a drain opening 19, and having substantially upright or vertical walls, preferably substantially rectangular in cross section and including a front wall 20, a rear wall 2i and side walls 22, with preferably rounded corner walls 23 therebetween.

A drain board 24 is preferably provided at each side of the bowl I1, and each drain board 24 preferably has a multiplicity of drain grooves 25. The drain boards 24 each preferably slope downward toward the fluid receiving bowl IT, as best shown in Fig. 12.

The bowl I! and drain boards 24 are preferably surrounded on three sides by and terminate in 2. preferably continuous rolled or turned raised rim 26, which is formed integrally as a part of the depending apron flange or skirt 21. A ledge 28 is preferably formed at the rear of the bowl I1 and the drain boards 24, which ledge 28 extends the full distance between the opposite ends of the ring, and may be located slightly below the plane of the upper surface of the rolled or turned rim 26 and slightly above th highest point in the sloping plane of the drain boards 24, as well shown in Figs. 12 and 15. If desired, the ledge 28 may be formed with a slightly raised center panel portion 29 (Fig. 14) in which a plurality of openings 30 may be formed for receiving faucet or other plumbing connections.

The raised panel 29 may either be in the plane of the raised rim 26, or may be located intermediate the plane of the raised rim 28 and the plane of the ledge 28, as shown. The parts thus far described may generally comprise the table or generally horizontally extending portions of the sink i8.

At the rear of the ledge 28, an upright splash back 3| extends preferably vertically upwardly and may comprise a central panel portion 32 generally corresponding to the panel portion 23 and merging therewith by the small radius curve 33 (Fig. 14), and also depressed or embossed panel portions 34 corresponding to the ledge 28 and merging therewith by the large radius curve 35 (Fig. 15) so as to form a splash back having :2. turned raised rim 36 formed as a part of a rearwardly extending flange 31 extending around the top and ends of the splash back 3|. As shown, the panel 32 may be located in the plane of the splash back rim 36.

The rearwardly extending flange 3?! formed around the top and ends of the splash back 3!, is formed integrally as a part of the depending flange 2! surrounding the front and ends of the sink table portion and the flanges 21 and 31 are joined by rounded corners 38 therebetween. The rounded corners 38, which are coextensive with and formed integrally as a part of the flanges 21 and 31, are provided by the improved method of manufacturing the sink hereinafter described in detail.

The flanges 2'! and 31 and corners 38 are preferably provided with a short inturned flange 33; and corner bends turned rims 26 and 36, preferably substantially concentric with the curve 35 (Fig. 15) extending bgtween the splash back panels 34 and the ledge 2 It is to be understood that the panels 32 and 29 provided so as to be and ledge 28, respecneed not necessarily be raised above the panels 34 40 occur between the raised.

a blank "a. the drain horizontal location, as is coating. The method of making sinks set forth in my prior Patent No. 1,916,910 may be utilized in the manufacture of the sink it; and likewise the structural featm'es claimed in my copending application, Serial No. 678,823 (Patent No. 2,045,969) may be incorporated in the construction of the sink i3,

Althouth a double drain board type sink I 3 is shown in Fig. 12, it is features or the improved sink construction may be incorporated in a single drain board type sink, or in a simple basin type sink.

The manufacture of the novel improved sink It may be carried out in accordance with the improved method as iollowst' A suitably shaped blank of sheet metal 30 (Fig. 1) is introduced between suitably shaped draw dies to draw the sink fluid receiving bowl ll therein. The blank 50 with the bowl I! drawn therein is then formed by a succeeding operation in suitably shaped draw dies to the shape indicated generally at 30a in Figs. 2, 3 and 4. In the boards 24, the drain grooves 25, the turned rim It and its depending flange 21, the ledge 28 and its center panel portion 2!, the splash back Ii including its panel portions 32 and 34 and the rim 36 flanged at 31, are all formed to substantially their finished shape, although not their finished location.

In the blank 50a, thesink table portion including the bowl i1, drain boards 2|, ledge 3t and the surrounding flanged rim 28 are generally in a also the splash back portion 3i and its corresponding parts. The splash back II will later extend in a generally upright or vertical position at right angles to the horizontal or table portion of the sink.

The top surfaces of the raised rims 23 and 36 are in the same horizontal plane; and the flanges 21 and 31, respectively, of the rims 3i and 36 extend downwardly from the rim portions 26 and 36 an equal distance. Inverted V-shaped troughs are formed in the blank 50a extending outwardly from the flanges 21 and 31 adjacent the places where corners will be formed between the rims 26 and 36 when bending the splash back 3i to an upright position.

The aplces I! of the v-troughs ii lie preferably substantially in the plane of the upper surface of the rims 26 and 33 and extend outwardly therefrom generally in a line along which the bend will later occur, which bend line may be assumed to be the section line 3--3, Fig. 2. The side walls or wings 53 of each V-trough ii are substantially at right angles to each. other (Figs. 2 and 4) and are preferably each located in planes extending at 45 degree angles below the plane of the rims 26 and 36: and the intersection of the wings I3 coincides with the bend line.

A flash 5 extends outwardly from the lower edges of the flanges 21 and 31 and the troughs 5|, as well shown in Figs. 2, 3 and 4.

In the next operation, the blank 50a is trimmed to have the shape shown at 5th in Figs. 5 and 6 by removing the flash 54, This trimming operation also removes portions of the wings of the V-troughs Ii so that they have an ear shape substantially as shown at Ila.

In the next operation, the splash back portion 3i is bent upwardly along a bending line indicated in dot-dash lines at it in Figs. 5 and 7; and the line 53 passes through the intersection oi-the ear shaped wings Ila, through the plane of the rims It and 3t and through the places of intersection between the ledge 20 and splash back 3i. The bend line 35 also lies back of the plane of the rear wall II of the sink bowl ii. The bending is continued until the ear shaped wings bio lying on the splash back panel side or the bending line he in the same plane as the other ear shaped wings Bio of the troughs.

The shape of the blank at this state in its manufacture is indicated generally at lie in Figs. 7 and 8. The ear shaped wings Ila have now taken on the shape of cars as indicated at lib: which ears ll b are substantially flat and lie in planes angularly disposed with respect to flanges 21 and 31. Each 'ear lib intersects the flanges 21 and 31 along the line ears Slb have rounded corners 31 and the plane of the ears still lies substantially in the bend line 55. i

In the next operation, each ear Bib is bent backward along the intersection line It to a position coplanar with and in continuation of the depending flange 21 and rearward flange 31, as best shown in Figs. 10 and 11. The substantially completed sink blank at this state in its manufacture'is shown at 50a in Figs lO and 11 and the only remaining operations to complete the sink it are to form the intumed flanges 33 on theflanges 21 and 3'! ears bib-51, which become the corners II; and to form the drain opening I! and the plumbing flxture openings 30.

Although a somewhat larger radius is shown at 40 in Figs. 14 and 15 than is shown in Figs. 7, 8, 11, and 12, the bending of the splash back 3i upwardly is always performed upon the definite bending line 55. The size of the radius Ill is a matter ofchoice, but there must always be a fillet of some size. A large radius or fillet may be provided for cleanliness and appearance. The rounding of the corner 40 may be accomplished by so shaping the die surfaces of the bending die, or maybe accomplished by a subsequent operation.

In its broadest aspect, the invention which comprises the present improved method contemplates forming a table or bowl panel and an integral splash back panel surrounded by a continuous rim formed as; part of downtumed in a flat sheet blank on either side of a bending line, forming portions projecting latpanel and parts of said projecting portions upwardly along said bending line to form said portions into laterally proiectingflat ears,and bending said ears to a position coplanar with the bowl and splash back panelrim flanges, so that in the complete structure the splash back extends the entire length of the ledge and the entire width of the rim at each end of the ledge.

Thus, the present invention provides an improved method and improved method steps for inexpensively making a light weight sheet metal sink from a single sheet or plate of metal free from welds, which may be enamel coated.

Accordingly, the present invention provides 5| (Fig. 8). The

' claims, is

more basin or bowl-panel; -the'words "sheet metal are from which it may the words l-oiled the same is'raisedxin the splash methods and means for overcoming the difllculties and eliminating many of the expensive and complicated operations involved in the prior practice of making sinks of the type described from sheet metal.

In the foregoing description, certain terms have been utilized for brevity, cleamess and understanding; but no unnecessary limitations are I to be implied therefrom beyond the requirements intended to" include sheet and plate metal of the I "desired ,or' necessary gauge, including steel,

stainless steel, Monel metal, or other metals be desired to construct sinks;

back panel: the words enamel coated are intended to refer to and include coatingscthe'r thai vitreous enamel coatings if desired; the words bowl panel and splashback panel a-reintendedto include all of the structuralelements included, respectively, in the. generally horizontally and generally vertically extending portions of the sink; and the words bending line. are intended to include the .narrowband or zone, which may be curved to form fillets, at the various parts of the bowl panel and splash the'corner. or juncture between back panel;

Iclaimg e 1. A stamped and drawn sheet metal sink including a fluid receiving bowl, a drain board extending from at least one side of the bowl, a continuous flat top rim formed integrally as a part of a .depending flange located in front oi the bowl and drain board and having a portion located at one side of the bowl and another portion located at the opposite side of the drain board, a horizontal ledge of a-materially greater width than the width of the rim behind the bowl and drain board extending from said rim portion at one side of the bowl to said rim portion at the opposite side of the drain board, said ledge being located in a plane below the rim, said drain board being located in a plane below the rim, an

integral splash back bent integrally upwardly from the rear of the ledge and extending the entire length of the ledge and the entire width of the rim at each end of the ledge, a flange disposed rearwardly of said splash back around the sides and top of the splash back, the rearwardly disposed flange portions at the sides of the splash back being located respectively in coplanar continuation of the depending flange portions at said one side of the bowl and the opposite side of the. drain board, and an inturned flange extendingfrorn said depending and rearwardly disposed flanges.

2. A stamped and drawn sheet metal sink including a fluid receiving bowl, a drain board extending from at least one side of the bowl, a continuous flat top rim formed integrally as a part of a depending flange located in front of the bowl and drain board and having a portion located at one side of the bowl and another portion located at the opposite side of the drain board, a horizontal ledge of a materially greater width than the width of the rimbehind the bowl and drain board-extending from said rim portion at one side of the bowl to said rim portion at the opposite side of the drain board, aportion or said ledge being located in a plane below the rim, another portion of the ledge being disposed in a plane diflerent from that of the remainder thereof, said drain board being located in a plane below the rim, an integral splash back bent integrally upwardly from the rear of the ledge and extending the entire length of the ledge and the "entire width of the rim at each end of the ledge,

a flange disposed rearwardly of the said splash -rn" or turned rim are intended to describethe usual rim extremity of the bowlvpanel and splash back panel whether or not back around the sides and top of the splash back,

the rearwardly disposed flange portions at the sides of the splash back being located respectively in coplanar continuation of the depending flange portions at said one side of the bowl-and the opposite side of the drain board, and an inturned flange extending from said depending and rearwardly disposed flanges.

3. 'A sink stamped and drawn from a single sheet of metal to provide a fluid receiving bowl terminating in a drain board extending from at least one side thereof and in an integral upright spalsh back, there being a flat top turned rim extending around three sides of the bowl formed as a part of a depending flange also extending around three sides of the bowl and terminating at its lower edge in an inturned flange; the splash back being bent substantially vertically on a line offset rearwardly from the rear wall of the bowl to provide between said wall and splash back a substantially horizontal ledge 01 a width materially greater than the width of said rim, said ledge and drain board extending each in a plane below the plane of the rim and said ledge extending behind the drain board and bowl the full distance between the opposite ends of the rim, and the junctures between the ends of the rim and the splash back being seamless.

4. A sink stamped and drawn from a single sheet of metal to provide a fluid receiving bowl terminating in a drain board extending from at least one side thereof and in an integral upright splash back, there being a flat top turned rim extending around three sides of the bowl formed as a part of a depending flange also extending around three sides of the bowl and terminating at its lower edge in an inturned flange; the splash back being bent substantially vertically on a line oifset rearwar'dly from the rear wall of the bowl to provide between said wall and splash back a substantially horizontal ledge of a width materially greater than the width of said rim, said ledge and drain board extending each in a plane below the plane of the rim and said ledge extending behind the drain board and bowl the full distance between the opposite ends of the rim, the junctures between the ends of the rim and splash back being seamless, said splash back having a rearwardly extended bent flange extending continuously around the top and ends thereof'terminating in inturned wall flanges, and the end flanges of the splash back and rim having their junctures at least in part seamless.

JACQUES STANITZ

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