US287624A - chaumont - Google Patents

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Io which a projecting iiange extends around the lTo a/ZZ whom it may concern:

UNITED STATES JULES ,OHAUMONT, OF WOOD HAVEN i PATENT OFFICE. l

AssICNoR To TEIE LALANCE a. GROs- JEAN MANUFACTURING COMPANY, OE NEW YORK, N. Y.

WRCUGHT AND SHEET IRON vEsVsEL.

SPECIFICATION formingpart of LettersPatent No. 287,624, dated October 30, 1883. f Application tiled July 13, 1883, (No modeLl Be it known that I, YJULEs CHAUMONT, a citizen of the United States, residing at Wood Haven, in the county of Queens and State 0f New York, have invented certain new and useful Improvements in Wrought and Sheet Iron Vessels, of which the following is a specication. f

My invention more particularly relates to that class of sheet or wrought iron vessels in edge of the bottomof the vessel and projects downward therefrom, so as to form a strong and durable foot or support for the vessel.

In the accompanying drawings, Figures 1 and 2 are sectional viewsof apparatus which I prefer to employ in the lconstruction of my improved vessel. Fig. 3 is a vertical section of the lower portion of afvessel formed ac-l cording to my invention. I l

I prefer to construct the vessel as follows: Iiirst stamp or press byv means of dies a iiat blank of sheet-iron of the properpsize into the shape shown at A in Fig. l. The blank is thus given a form having a fiat bottom andY cylindrical sides. The blank isr next placed upon themandrel or die B, .which is of circular form, and has a recessed and preferably slightly convex bottom, b. This bottom is surrounded vby the flanged edge e. A die, D, having its upper .end shaped to fit within the recessed bottom of the mandrel B, is securely held directly beneath the latter, when the mandrel B and the blank A are allowed to descend upon the die D under sucient pressure to force the'bottom of the blank into the shape of the respective upper and lower sur-v faces of the die D and mandrel B. The blank A is next removed from the mandrel B, and is placed upon another mandrel, C, the sides and` bottom of which should be formed to fit the corresponding parts of the interior of the blank. The mandrel C is adapted to be mounted upon the spindle of a lathe, and after being placed thereon, togetherV with the blank A, the'back center ofthe lathe is brought to bear upon the chuck c, the bottom of the blank being tightly clamped between mandrel Gand chuck c. Rotary motion is then imparted to the mandrel C and chuck c, and by means of burnishers or analogous tools employed in the process' of sheet-metal spinning -the outer and inner sides of the flange a of the blank-are compressed and forced closely together, thus making a strong foot or base for the vessel. By the proper and well-known manipulation of the burnisher the bead f (shown in Fig. 3) is formed upon the extreme edge of the flange, and made to project slightly outward from the flange a, thus greatly increasing the strength and durability of the completed article.

It is sometimes preferable to fo'rm the bead f by the aid of a wire inserted in the interior of the flange ,between its sides. The wire should be insertedafter the blank has received the form given it by the'operation exhibited in Fig. l. In Fig. 3 I have shown the` wirev in place.v

I vclaim as my invention- 1. The teammate-described vessel, hw. ing the seamless supporting flange or foot, andy the annular bead upon the lower edge of said flange.

2. The hereinbefore-described vessel, hav# ing the seamless supporting flange or foot, and the annular bead with inclosed strengthening wire upon the lower edge of said flange.

In testimony whereof I'have hereunto subscribed my name this 12th day of July, A. D. 1883.

Witness es J AMEs COCHRAN, CHARLES, SMITH.

.IULEs CHAUMONT.;

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