US1974794A - Sink and similar structure and method of constructing the same - Google Patents

Description

pt- 25, 1934- r s. BLICKMAN 1,974,794

SINK AND SIMILAR STRUCTURE AND METHOD OF CONSTRUCTING THE SAME Filed July 26, 1932 2 Sheets-Sheet 1 I N V EN TOR. 5401 5A m r/v/fl/v Sept. 25, 1934. s. BLICKMAN ,9

SINK AND SIMILAR STRUCTURE AND METHOD OF CONSTRUO'HNG THE SAIIE Filed July 26, 1932 2 Sheets-Sheet 2 INVENTOR. \fiflaz 51 mmvmv nyg i ATTORNEY,

Patented Sept. 25, 1934 UNITED STATES SINK AND S I M I L A R STRUCTURE AND METHOD OF CONSTRUCTING THE SAME Saul Blickman, New York, N. Y.

Application July 26, 1932, Serial No. 624,839

14 Claims.

, My invention relates to sinks and similar receptacles and a method of constructing the same from sheet metal. 9

Ingeneral, the purposes of the invention are to provide a sink, wash tub, or other receptacle made of sheet metal under such a construction and in such a manner as to obtain an extremely durable and nicely finished article with a conservation of materials and labor. The specific features whereby these purposes are accomplished will be hereinafter pointed out, but before proceeding with the detailed description of myinvention and articles constructed in accordance therewith, and in order that my invention may be better understood, I will refer briefly to some of the sheet metal receptacle structures known prior to my invention. It has been proposed to unite blanks by solders to form a base for a porcelain covering and so that a smooth metallic surface having the appearance of a single body of metal throughout is not of importance, because the porcelain conceals the joints. In other forms receptacles have been made in rectangular form, from a single sheet of metal out according to a definite pattern where-by portions of the sheet may be folded along definite lines and welded together. The receptacles of this type have sharp corners and edges and the cutting of the blank in accordance with the pattern necessarily produces a waste of material due to the large amount of material cut away in forming the blank. Still other forms have been provided from blanks, one of which afforded the bottom and two opposite upstanding walls and to which two separate sheets were welded in place to provide the other walls and complete the receptacle. All of these last types, with which I am familiar, are characterized by sharp corners which in some instances are made by chamfering the abutting edges of the sheets ,to provide a mitred joint.

The objections to the constructions above mentioned are the inability to obtain a homogeneous sheet metal sink or receptacle having nicely rounded corners. the waste of material resulting from cutting the blanks, and the labor and time involved in preparing the edges of the'sheets before joining them. i

The objects of my invention include the provision of a sheet metal sink or other receptacle having nicely rounded corners and formed preferably from a strip or sheet of metal bent to provide two opposite vertical walls of the receptacle and a dished portion with rounded cor ners, the other opposite walls being provided by two plain sheets of metal united in edge to edge relation with the edges of the first walls, and dished bottom preferably by welding, and in such manner that all visible parts of the receptacle exhibit a smooth nicely finished surface whereby the finished receptacle has the resemblance of a single homogeneous metal body; second, the provision of a rimincluding portions formed along the extent of the upper edges of the sides integrally therewith and completed at the corners by specially constructed inserts in such a manner as to round off the corners of the rim in harmony with the corners of the receptacle; third, the provision of a double tank or receptacle embodying the features above mentioned; and finally, accomplishing the foregoing objects by utilizing a relatively small amount of material, as I propose in many cases to use stainless steel of appreciable thickness which is quite expensive.

The foregoing and other objects and advantages of the invention will become apparent and will be pointed out during the course of the following detailed description of the accompanying drawings in which Fig. 1 is a plan view of the sheet or blank from which the bottom and two forward opposite walls are formed;

, Fig. 2 is a side elevation of a sink or tank embodying the invention and showing fragments of the drain pipe and supporting legs;

Fig. 3 is a sectional view on the line 2-2 0 Fig. 2; i

Fig. 4 is a bottom plan view of a disc from which the corners of the rim are formed;

Fig. 5 is a view on the line 5-5 of Fig. 4;

Fig. 6 is a view similar to Fig. 5 showing a modification wherein the skirt ofthe disc is turned inwardly;

Fig. 7 is an enlarged detail sectional view on the line 7-7 of Fig. 2;

, Fig. 8 is an exploded perspective view of the sink or receptacle shown in Fig. 2;

Fig. 9 is a transverse central vertical sectional view through a double tank constructed in accordance with my invention;

Fig. 10 is a plan view of the blank or sheet from which the bottom and two opposite vertical walls of the tank shown in Fig. 9 are formed;

Fig. 11 is a plan view of the blank or sheet from which the central partition of the tank shown in Fig. 9 is formed; and

Fig. 12 is a fragmentary enlarged perspective view of the partition and portion of the back and bottom.

Referring to Fig. 1 of the drawings, there is shown an elongated rectangular sheet of metal divided by clot and dash lines a and b into three panels designated by the numerals 1, 2 and 3. and constituting the back, bottom, and frontrespectively when the sheet is bent along the lines a and b to bring the panels 1 and 3 into substan tially parallel relation with respect to each other and at right angles to the panel or bottom 2. The bending is done so as to curve the sheet where.

panels 1 and 3 joint the bottom. Panel 1 or the back is provided approximately midway of its length, and in opposite side edges, with alined notches 4, the notches being curved on their top edges and straight on their bottom edges for a purpose hereinafter pointed out. The portion of the panel 1 between the notches 4 and line b constitutes one wall of the receptacle, which in the embodiment shown is the back, and the portion above the notches 4 constitutes the splashboard to be disposed adjacent the wall of a room when the washstand is completed and installed. The splash-board is provided with usual spigot or pipe openings 5. It will be understood that it is not essential to the practice of my invention to provide the splash-board and the same is shown only in connection with the sink structure in which form I have illustrated the invention.

The sheet is also notched as indicated generally by the numeral 6 at each corner of the bottom or panel 2, each of the notches being formed by cutting the edges of the material at points at the ends of the lines a and b along which the sheet is folded. Each notch 6 includes a projection 7 at the corners of the bottom panel 2 and a recess 8, opposite the projection 7, and extending diagonally inward toward the center of the panel 2, and terminating at the dotted line 0, which is a straight line parallel to the side of the sheet between the inner end of each of the notches 4 and the inner end of a shoulder 9. The projections '7 terminate preferably at the lines a and b, and the tapering ends of the recesses 8 terminate at the line 0 as explained.

The shoulder 9 forms one side of a recess provided in each of the outer corners of the panel 3 at the ends of a reduced extension 10. Thus, there is provided on the panel 1 between notches 4, line 0, and notches 8, portions or wings 11 which can be bent or curved upwardly from the sheet along the line 0. Similarly at opposite sides of the panel 2 or bottom there are provided between the recesses 8 and lines 0, portions or wings 12, which can be bent or curved upwardly on the line 0, and on the panel 3, portions or wings 13, between the shoulder 9, recesses or notices 8, and line 0, which can be bent upwardly along the line 0. When the panels 1 and 3 have been bent up along lines a and b and portions 11, 12, and 13 have been bent upwardly on the lines c, to form curved flanges on the panels 1, 2, and 3, the corners at notches 6 are also bent or rounded so as to bring the projections 7 in the recesses 8 in edge to edge relation therewith. The resulting structure will be as shown in Fig. 8 wherein the bottom is dishedand has nicely rounded corners. The panels 3 and 1 then form opposite walls of the sink, and the portions 12 form shallow sides of the dished bottom. It will be noted that the side edges of the portions 11 and 13 face each other and are disposed at right angles to the free edge of the portion 12, and that the said three portions form marginal portions of the sides of the sink at this stage of its formation.

To complete the sink the sides or rectangular sheets 14 of the same metal, and of a length corresponding to the distance between the edges of the portions 11 and 13 when in the position shown in Fig. 8, and of a depth corresponding substantially to the portions 11 and 13, except so far as the provision of the rim hereinafter explained is concerned, is placed with its side and bottom edges in face to face relation with the edges of the portions 11, 13 and 12 respectively, and is then homogeneously connected to the said portions,

preferably by welding. Both sides of the sink are completed in this manner and the rounded corners with the projections '7 in recesses 8 are also welded.

Reverting to Fig. 1, it will be noted that the extension 10 is of appreciable length, whereby it may be curved or bent to the position shown in Fig. 8 slightly above the shoulder 9 and curved outwardly and downwardly therefrom at the outer face of the panel 3 or front of the sink. The sides 14 are similarly provided with curved rims 15 between the edges of the portions 11 and 13. When the sides have been connected as above explained, and the members 10 and 15 curved to the same degree and shape to form similar rim portions, there will be spaces left at the top corners of the sink which are filled by special inserts about to be described in such a manner as to provide the rim also with nicely rounded corners.

Referring to Figs. 4 and 5, there is shown an annular channeled sheet metal body indicated generally by the numeral 20, and in Fig. 4, the dot and dash lines indicate the lines along which the member 20 would be cut to form four segments of equal size to fill in the corners of the rim. The inner wall 21 is spaced from the outer wall 22 the same distance as the parts 10 and 15 are spaced from the plates 3 and 14 respectively, and the curvature of the top 23 is the same as the curvature of the rims 10 and 15. The inner diameter of the member 20, that is, the distance between opposite points on the wall 21 is such that the bottom of wall 21 of the segment will correspond in curvature and extent to the shoulder 9 which is located between the rim portions 10 and 15. The bottom edge of the inner wall 21 is placed in face to face relation with the shoulder 9 so that the top 23 will be flush with the curved part of the rim portions 10 and 15, and the skirt 22 will be flush with the outer part of the rim portions 10 and 15. Thus, the corners at the front of the sink are filled in and the edges of the segments are homogeneously welded to the side edges of the rim portions 10 and 15 at the front of the sink.

In order to complete the corners at the back of the sink the same kind of segment is used with the bottom of the inner wall in face to face relation with the bottom of the notch 4 which has been curved outwardly when the wing 11 was bent up. It has been previously mentioned that the top of the notch 4 is curved for a particular purpose, and that purpose is to accommodate the curved part of the segment when the segment is positioned as just described, and of course, the curvature of the top of the notch 4 should be the same as the curvature of the segment so that there will'be a snug engagement and neat appearance. The segment is welded to the rear edge of the rim portion 15 and top of the notch 4 at each side of the splash-board. In case no splash-board is desired or if the invention is to be practiced in connection with other receptacles having all sides of equal depth, the rear panel 1 would be made exactly the same as front panel 3, and the segments would be secured at all corners of the receptacle in exactly the same manner as described and shown for the front corners, as there would then be four rim portions identical with the portions 10 and 15. However, in the embodiment shown in Figs. 1-8 the splash-board is shown and is further provided with a flange 25 formed at its top to abut against the wall when the sink is installed. To close the space between the splashboard and wall I may provide the strips 26, which may be secured to the sides of the splash-board in any desirable manner. The strips have curved lower ends 27 to fit over the segment as indicated in Fig. '1.

In Figs. 9-12, I have illustrated how a sink or similar article embodying the features hereinabove described may be constructed to afford two compartments. This may be accomplished by providing, as shown in Fig. 10,.a blank similar to that shown in Fig. 1 but of greater width and having panels 1', 2, and 3' corresponding to the panels 1, 2, and 3 of Fig. 1, and the notches 4 and 6' corresponding to the notches 4 and 6 respectively of Fig. 1. The blank for the double sink is provided with an elongated slot or opening 30 extending centrally across the bottom panel 2' and partially across the back panel 1 and front panel 3'. Extensions or ears 31 are preferably provided at the ends of theslot 30. Obviously, when the front panel 3' and back panel 1' are bent up from the bottom as previously described, there will be an opening centrally across the bottom 2' provided by that portion of the slot 30, and also openings or slots extending up the front and back panels provided by the extremities of the slot 30. The extensions 31 are bent out at right angles to the panels 1' and 3' as shown in Fig. 12, it being understood that the extensions 31 are disposed on the interior of the receptacle substantially parallel to the bottom 2'. To close the openings provided in the panels 1, 2', and 3' by the slot 30, I provide the blank shown in Fig. 11 and designated generally by the numeral 32. The corners of this blank 32 are provided with notches 33 similar in construction to the notches 6 and 6 and the blank is also provided with alined centrally disposed plain notches 34 in its longest edges. The edges of the sheet 32 are curved or bent up until the edges of the notches 33 meet as shown at 35 in Fig. 12, and the sheet 32 is bent upon itself along parallel lines between the sides of the notches 34 to provide a top 36, Fig. 12, for the, partition. The side portions of the sheet which were curved or bent up are indicated at 37in Fig. 12, and the edges of these curved portions are brought into face to face relation with the edges of the slot 30 and there welded as shown at 38 in Fig. 12. The ends of the wall 36 meet the ends of the extensions 31 and the curved portions 37 are disposed under the curved walls of the extensions 31 and the parts are also welded at these points.

It will be. obvious from the above that the double receptacle is thus provided from a minimum amount of material and in such a manner as to effect a smooth and attractive appearance since the partition is identical on both faces on each of which it has three curved sides to fit within the slot 30 so that each compartment has the same type of rounded corners, as in the case a of a single receptacle.

In the case of a double receptacle, I may use the stri'ps 26 to close the sides of the back of the receptacle where it meets the wall, and of course the rim will be formed in the same manner as in the case of the single receptacle where a curved rim is desired. This is shown in Fig. 9 where the rim is designated at the sides of the receptacle by the numeral 40, it being understood that the front rim is provided by the portion on the blank shown in Fig. 10 between the notches at the front corners of the panel 3, the same as in the case of Figs. 1 and 8. The corners of the rim will be completed by the segments cut from the annular channel members, such as shown in Figs. 4-6.

Referring back to Fig. 6, it will be noted that the annular channel member from which the corners of the receptacle are taken, has its outer wall bent inwardly instead of depending straight down as in Fig. 5. In many cases it is desirable to have the rim of the receptacle, whether single or double, curved inwardly in this man ner, and of course the curvature and cross-sectional dimensions of the segments for the corners must correspond to the rim portions bent up on the panels forming the sides of the recepiacle. In each case the arc of the segment will be determined by the arc covering the distance between the adjacent ends of the rim portions on the sides.

I claim:

1. A sink or similar structure composed of sheet metal blanks one of which includes three alined panels and the end panels being bent up from the intermediate panel whereby said panels form three walls of the structure, said blank being notched at the corners of the intermediate panel to provide marginal portions on each panel and said marginal portions being bent up at each side of the blank to form marginal portions of the other walls of the structure, the edges of said bent up portions on each side of the structure being in common planes, the ends of said marginal portions at said notches beingcurved to provide rounded corners at the bottom of the structure, the edges of said notches being welded in face to face relation at said corners, and blanks completing said other walls, said last blanks having their edges in face to face relation with edges of said marginal portions and welded thereto.

2. A sink or similar structure composed of sheet metal blanks, one blank including a panel to form the bottom of the sink and end panels to form two opposite side walls of the structure, and said blank being provided with notches in its edges at the corners of the bottom panel, said notches providing .each of said panels with marginal portions bent so as to form side and bottom marginal portions of the other two side walls of the structure, said other walls being completed by blanks united in edge to edge relation with said marginal portions, and said notches tapering toward the center of the bottom panel and defining the ends of said marginal portions, said ends being curved to bring the edges of the notches into face to face relation to provide the structure with rounded corners at the bottom of the structure.

3. A sink or similar structure composed of sheet metal blanks, one blank including a panel to form the bottom of the sink and end panels to form two opposite side walls of the structure, and said blank being provided with notches in its edges at the corners of the bottom panel, said notches providing each of said panels with marginal portions bent so as to form curved corners integral with said blank, blanks united in edge to edge relation with said marginal portions, the upper ends of said blanks and at least one of said other walls being curved to substantially the same extent and degree to provide channeled rim portions on the side walls between the tops of said curved corners, and channeled segments united in edge to-edge relation with the tops of said extensions and ends of the rim portions to provide rounded corners on the rim.

4. A sheet metal sink comprising a bottom and four side walls connected by arcuate strips forming roundedcorners, the upper ends of these walls being curved to form rim portions terminating adjacent the rounded corners. and a splash-board above the fourth wall and joined thereto, arcuate segments inserted at the tops of the arcuate strips to provide rounded corners on the rim, and notches in the side edges of the splash-board formed and proportioned to receive the segments at those corners and to fit snugly against a portion of the tops of said segments.

5. The structure of claim 1 wherein said first blank is provided with a slot extending across the bottom panel and partially up said opposite sides, and a rectangular sheet is bent upon itself to provide spaced walls each provided with marginal wings curved outwardly and united at their edges in face to face relation with the edges of the slot to divide the structure into similar compartments.

6. The method of constructing a sink or similar structure from sheet metal which comprises cutting notches in opposite side edges of a rectangular blank to form marginal wings along said edges, bending the blank along parallel lines extending transversely across the blank through opposite pairs of notches and between opposite wings to form three walls of the structure each provided with marginal wings at opposite sides, curving the wings along lines parallel to the sides of each of said walls and at the inner ends of the notches, bending the ends of adjacent wings at said notches toward each other to bring the edges of the notches together to form rounded corners integral with said blank, positioning blanks with their edges in face to face relation with the edges of the curved wings, and welding the abutting edges of the blanks, wings and notches.

7. The method of constructing a polygonal sheet metal sink or similar structure with a rim having rounded corners which comprises connecting the side walls of the structure with arcuate members substantially flush with the surfaces of the walls, curving the tops of the walls between the arcuate members upwardly, outwardly and downwardly, inserting segments of a channeled annulus at the corners with their edges in face to face relation with the top edges of the arcuate members and end edges of the curved tops of the walls, and homogeneously connecting the segments to said edges in said position.

8. The method of making a sheet metal sink or similar structure having an outwardly curved rim and rounded corners, which consists in assembling separate wall members of the structure in abutting relation, with the opposite edges of two of the opposed wall members curved inwardly and the rim portions curved outwardly, and portions of the rim on at least one of said wall members being cut away at the points where the rounded corners are to be formed, inserting a rounded channeled segment in each of the spaces formed by the said cut-away portions, with the opposite edges of each segment in abutting rela tion with the edges of its companion wall members, and welding all the joints between the several members to provide a unitary structure.

9. A sheet metal sink having a bottom and four walls connected by rounded corners, a partition plate between two of said walls, said plate being bent upon itself and having curved marginal portions on opposite faces contacting said bottom and opposite walls and forming rounded corners between said partition, bottom and walls on both sides of the partition.

10. A sheet metal sink having a bottom and four walls connected by rounded corners. a partition plate between two of said walls, said plate being bent upon itself and having curved marginal portions on opposite faces contacting said bottom and opposite walls and forming rounded corners between said partition, bottom and walls on both sides of the partition, said marginal portions of the partition being welded to said bottom and opposite walls.

11. A'sheet metal sink or similar structure having acurled rim with rounded corners, comprising a blank bent intermediate its ends to form the bottom and two opposed side walls of the structure, the opposite edges of said blank being notched to provide inturned and curved flanges at opposite sides of the blank. the edges of which lie in the same plane, the upper edge of one of said walls being curled outwardly and downwardly to provide a rounded rim, said rim portion being of less width than the maximum width of said wall, and separate sheet metal side walls each having its edges positioned in alinement with the edges of said inturned flanges and welded thereto, and each of said side walls having its upper edge curved upwardly, outwardly and downwardly, said walls when assembled leaving gaps at the upper corners of the structure. and a channeled filler fitted and welded in each of said gaps. each filler consisting of a segment of a channeled annulus.

12. The structure of claim 11 wherein there is a splash board extending above the rear wall and provided in opposite sides with notches receiving the fillers at the rear upper corners of the structure, the upper edge of said fillers snugly engaging the upper edges of said notches.

.13. The method herein described of forming a sheet metal sink or similar structure with rounded corners and a curled rim, which consists in forming the bottom and side walls of the structure of sheet metal sections. the edges of which are bent and positioned in abutting relation and welded together, and the upper edges of which are curled outwardly and downwardly, leaving gaps at the corners of the structure at its rim, and filling the said corner gaps each with a segment cut from a previously formed channeled sheet metal annulus, positioning one of said segments in each of said gaps with its edges in alinement with the edges of said outwardly curled rim portions of the side walls of the structure at said corner gaps, and then welding the segments in position to provide a symmetrical curled rim with rounded corners.

14. A sheet metal sink having a bottom and four walls connected thereto by rounded corners, a partition between two of said walls dividing the sink into two compartments, said partition con- Lit? sisting of opposed parallel walls. each having outwardly curved marginal portions contacting and welded to said bottom and opposed walls of the sink and forming rounded corners between said partition, bottom and sink walls on both sides of 4 the partition.

SAUL BLICKMAN.

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