US1635311A

US1635311A - corrigan

Info

Publication number: US1635311A
Authority: US
Publication date: 1927-07-12
Anticipated expiration: 1944-07-12

Description

July 1927' F. s. CORRIGAN SINK, WASHBASIN, AND THE 111KB File d Oct. 30, 1926 2 Sheets-Shut 1 INVENTUE.

' 1,6 5,311 ju-lylglgz'z' F. s. CORRIGAN. 3

- SINK; WASHBASEEN, AND THE LIKE Filed Oct. 30, 1926 2 Sheets-Sheet 2 substantially at right angles the top of the sinkor b35111. Sheet metal Patented July. 12,- 1927. I I

FUNITED "STATES [PATE T I .oFJF-Ic E.

answerer: s. cesarean, or. rronomo, 021M310, CANADA, asszenon "To run snnn'r METAL rnonuc'rs co. or canana am -ran, or ronomro, cannon.

smz, wasnnasm. Am) run Application m pctober so, 1926, Serial .No. 145,286, ana'm canaaa'ootoberaa'iaae.

This invention relates to the manufacture fromsheet metal of sinks, wash basins and the like of the type which are provided with a comparatively high back lying in a plane to the plane of sinks and basins have heretofore been made of two types, the first in which the bowl and the back are separate parts bolted together l0 and the second in which the bowl and .back

are welded together. The appearance of each type is objectionable, the objection to the first type being-that the heads of the bolts arevisible and that a crack is left 15 between the parts, and the-objection to the second type that it is difiicult to make a satisfactory welded joint without the-joint being more or less noticeable in the finished enameled article.

In the second casethere is also another very serious. objection and that is, with a back welded on in this manner, there is very little support from the back for the front part of the bowl, andconse uently due to the application and. removal oi weight at the front part of the sink, which occurs in ordinary use, the latter bands at the angle, which results, in the early cracking and chippingof the enamel along the line of weld, thus further disfiguring the sink or basin.

These disadvantages have resulted in the restriction of stamped metal constructions to use in places where appearance is an unimportant consideration. j

My object, therefore, in the present invention is to devise a stamped metalconstruction which will retain the advantages of cheapness and light weight which were characteristics 'of the earlier constructions, as compared with the well known cast iron 'sinks and wash-basins, now in use, but which will be the equal in appearance of the cast iron article.

I'attain my object'by formingfthe'bowl andback of the sink or basin from an integral sheet of metal according to the processes hereinafter describedand illustrated in the on the back;-

Fi'g. ,3 a similar view after the second step of drawing;

Figs. 4 andf, asection and plan respec-- tively, illustrating the sheet with the depres-gsion at'the finished depth; 7

Fig. 5. a sectional view 1 sheet as it appears after the drawing down llustr'ating the of its edge to form the roll on the bowl "and.

back

Figs. 6 and 6 are respectively end and plan. views-showing the sheet ready for the} turning up of the back;

Figs. 7, 7 and7 are respectively sec; tlonal end and plan views after the turning up of the back; v 1

' Fig. 8 a sectional View showing the filling vot-the gap formed by turning up the back and the formation of the stiffening. flange Figs. 9 and '9 are respectively end and plan views of thefinished sink;

Fig. 10 a section of a wash basin after the formation of the depression, the roll on the back and the apron;

Figs. 11 and 11 side and plan views respe'ctively of the basin ready for, the turning up of the back;

up of the back; and

Fig. 13 a sectional View of the finished wash. basin. H a

In the drawings'like numerals of reference indicate corresponding parts in the ditferent figures.

l is a sheet of metal from which. the sink or wash basin is to be' formed.

In- Figs. 2 to 9 I show the various steps 1n forming-a sink. The first step is to form the depression 2. ()wing' to the depth ofthe Fig. 12 an end elevation after the turning depression, it is found in actual practice that sult of the second stage or' operation being shown in Fig. 3, and the final stage or opera.-

tion being shown in Fig. 4;

These several steps are all portance"-as abovementioned, :as only by progressivelydra'wingthe 'metal is it po'sslble to obtain the relatively great depth m shownin Fig.' 4.

of great im For the sake-0t appearance, as well as for the purpose] of imparting stiffness and Strength to the sink, and to enable it to stand up without warping during the operation of enameling, both the bowl and back are provided with an integral roll or rim 3. The sheet after the formation of the bowl is substantially of the shape shown in plan in Fig. 4-, but before shaping and drawing the metal to form the roll or rim, it is preferable to trim off the sheet as shown on the dotted line in said figure so as to leave just suflicient material to form the roll or rim. The next step is the shaping and drawing of the metal to form this roll or rim as in F ig. 5. As the back is provided with an' inwardly directed flange, the trimmed sheet will be of greater width at this portion. The next step is the shaping and drawing of the metal to form this roll or rim as shown in Fig. 5. This may be done in one or more stages as may be most convenient,

having in mind the characteristics of the metal employed. For a roll or rim of the type shown usually one operation will be sufficient.

The roll or rim having been formed, the next step is to notch or cut away a portion of the metal at 4, where the bowl and back meet, the cut being at least substantially as long as the width of the roll or rim, the

portant as m It will be also noted from Fig. 5 thatnotch having its greatest width in alinement with the highest part of the roll and narrowing olf towards each end.

As, however, the inner corners of the depression 2 are rounded, (see particularly Fig. 6) the notch 4 is extended inwardly as a narrow slot to the point where the {)Ollfidd corner meets the flat portion of the A slit '5 is then cut through the side of the roll or rim as shown in Fig. 6.

The cuttin of themetalat 4 is very imshortly be apparent.

the metal is drawn down dee er at the back to provide material for the ange 9, hereinafter referred to, and that it merges into the shallower front. The next step is to bend the back to occup a position at substantially right angles to t e plane of the top of the bowl as shown in Figs. 7, 7- and 7 the "ends of the roll to c ose the note Simultaneously the ends 3 of the roll on the bowl are curved upwardly and the ends 3 of the roll on the back are curved for-'* wardly so that the ends meet, thus not only closing the formed by the-notch ,4, but' ga also,'when wdlded together as hereinafter referred to, form braces which stiffen the connection between the bowl and back. It be noted that b the curvi of the extra material provided by mergin th roll on the back with the rollon the W1 has at least partially disa peered, and any surplus left s ofi tel-in the; pr0c-' ess to make the roll of substantially uniform depth all around the bowl.

In the bending-up operation, gaps 6 are formed as shown in F igs. 7 and 7". Inserts 8 of metal are placed in these gaps and welded in position and the ends 3 and 3 of the rolls on the bowl and back will be welded together.

The edges of the rollare then trimmed,

and for the purpose of stiffening the back, the edge of its roll is bent inwardly to form a flange 9, (see Fig. 8). Any final trimming necessary is now done. a

All rough parts are then ground smooth In Figs. 11 and 11 the basin is shown ready for the bending up of the back after having been notched at 4 and slit at 5 in the same manner as the sink.

. Fig. 12 shows the back bent'up at right angles to the plane of the top of the bowl and the ends 3 and 3 bent to close the notches 4. Any slight""drawing up of the rear corners 3 of the apron due to the up- -W ard bending of the ends 3 which may take place, is taken care of in the trimming 7 of the apron. Owing to the depth of the rim, this drawing up of the rear corners is,

however, scarcel noticeable in any event.

Inserts are wel ded in place to'fill the gaps 7 formed by bending u the back just as in the case of the scribed. As shown in Fig. 13, the edge of the roll sin hereinbefore deon the back is bent in to form astifiening flange 9, and also the lower edge of the apron is slightly inturned as shown.

After the necessary grinding and cleaning the basin is then, ready for enameling.

I What I claim is':

1. A process of forming wash basins and the like which consists-indrawing down an integral sheet of metal in a plurality" of operations to form the fluid, receiving bowl, leaving at one side sufiicien't metal to form the back; bendinglithe edges of. the

sheet downwardly to forimirollior the bowl and back; cutting theslieet at opposite sides 7 f of the roll where to rmit ofthe be bac and bowl meetgihending the sheet to cause'the back to occup a positionv at substantially,

ringing the cutv of the right angles to the mainpar't oi the art cle;-

' front of the roll into juxtaposition; and

welding together the edges.

2. A process of forming sinks, wash basins and the like which consists in drawing down an integral sheet of metal in a. plurality of operationsto form the fluid receiving bowl, leaving at one side suflicient metal to form the back; bending the edges of the sheet downwardly to form a roll for the bowl rolls the bowl and back are connected by a longitudinally curved brace having approximately the same cross-sectional curvature as the rolls.

3. A process of forming sinks, wash basins and the like which consists in drawing down an integral sheet of metal in a plurality of operations to form the fluid receiving bowl, leaving at one side suflicient metal to form the back; bending the edges of the sheet downwardly to form a roll for the bowl-and back; cutting the sheet transversely at 0pposite sides at the junction between the bowl and back to form a slit through the side of the roll, the roll provided with a wide notch right angles at top and also provided with a narrow slot at the inner side of the notch extending into the sheet; bending the sheet to cause the back to occupy a position at substantially right angles to the main portion of the article bending the adjacent edges of the front of the rolls on the bowl and back in a curve to bring the front edges into juxtaposition; and welding said edges to ether whereby the rolls of the bowl and bac are connected by a longitudinally curved brace having ap-- proximately the same cross sectional curvature as the rolls.

4. A process of forming sinks, wash basins and the like which consists in drawing down an integral sheet of metal in a plurality of operations to form the fluid receiving bowl, leaving at one side sufiicient metal to form the back; bending the edges of "the sheet downwardly to form a rollfor the bowl and back; cutting the sheet at opposite sides to permit of the bendin of the roll where back and bowl meet; ben ing thesh'eet to cause the back to occupy a posltion at substantially to the main part of the article; bringing the'cut edges of the front of the roll into juxtaposition; welding together the edges; and bending inwardly the edges of the roll on flange. i a

Signed at Toronto, Canada, this 14th day of February, 1927. FREDERICK S. CORRIGAN.

the back to form a stiffening