US583683A - Jules gersant - Google Patents

Description

,rUNITED STAT Es PATENT, OFFI E.

.Junns ounsnn'r, or DEAL, Ann. AROHIBALD enonon BUTTIFANT, or

LONDON, ENGLAND.

SPECIFI QATION forming part of Letters Patent No. 583,683, dated June 1, 1897.

Application filed May 5, 1896. Serial No. 590,385. (No specimens.) Patented in England September 13, 1894, No. 17,442; in Belgium November 12, 1894, No. 112,695; in Italy November 12, 1894, No. 37,604; in France November 13, 1894, No. 242,880; in Switzerland November 15, 1894, No. 9,492; in Germany November 16, 1894, No. 81,292; in Spain November 17,1894,No.16,576; in Austria December 14, 1894,No. 1,935; in Norway January 21, 1895, No. 4,208; in Sweden Jannary 21,1895,No. 6,681; in New South Wales Maroh14,1895,No. 5,679; in Canada March 15, 1895, No. 50,733 ;'in Queensland March 15, 1895,No. 2,926; in New Zealand March 20,1895,No. 7,498; in Portugal May 30, 1895, No 2,009; in Tasmania June 22, 1895, No. 1,455, and in South Australia July 5,189 5,N0.3,887.

To all whom it may concern.-

Be it known that we, J ULES GERSANT, residing at 71 College Road, Deal, Kent, and ARCHIBALDGEORGE BUTTIFANT, residing at 8 St. Benet Place, Gracechurch Street, E. 0., London, England, subjects of the Queen of England,have invented certain new and useful Improvements in Processes for Hermetically Sealing Metal Boxes, Cans, &c., (for which we have obtained foreign Letters Patent in the following countries: GreatBritain, N 0. 17,442, dated September 13, 1894; Belgium, No. 112,695, dated November 12, 1894; Italy, N 0. 37,604, dated November 12, 1894; France, No. 242,880, dated November 13,1894; Germany, No. 81,292, dated November 16, 1894; Austria, No. 1,935, dated December 14, 1894; Switzerland, No. 9,492, dated Novem ber 15, 1894; Spain, N0.16,576, dated November17, 1894; Canada, No. 50,733, dated March 15, 1895; Norway, No. 4,208, dated January 21, 1895; Sweden, No. 6,631, dated January 21, 1895; Queensland, No. 2,926, dated March 15,1895; New South Wales, No. 5,679, dated March 14, 1895'; South Australia, No. 3,887, dated July 5, 1895; Tasmania, No. 1,455, dated June 22, 1895; New Zealand, No. 7,498, dated March 20, 1895, and Portugal, No. 2,009, dated May 30, 1895;) and we hereby declare the following to be a full, clear, and exact description of the same.

This invention relates to an improved method of'hermetically sealing previouslyfilled metal boxes, cans, 850., such as those intended for preserving alimentary substances and other articles, in which said boxes, cans, &c. are composed of iron, steel,or other plates having an original coating or coatings of tin 'or other fusible metal or material thereupon.

This invention consists, essentially, in uniting the top and bottom with the side or body of the box or can by a rolled seam that projects above the plane of the top of the can, then inclosing the outer peripheral wall of this scam within a circumscribing envelop or constituting the outer part or first lap thereof and without correspondingly heating the inner folds or laps of the rolledseam, which said inner folds are unconfined and are exposed to the action of the exterior air to assist in maintaining said portions substantially cool, the whole of the rolled seam being above the plane ofthe can-head, so that the con tents of the can are not affected by the heat appliedto the seamed portion.

. In the accompanying drawings we illustrate a means for carrying out our process, in which Figures 1, 2, and 3 illustrate steps in the formation of a rolled seam. Fig. 4 illustrates the seam confined and being acted on by the wall of flame. Fig. 5 is a plan view of Fig. 4, but showing the casing A complete.

In carrying out our invention the heads and body of the can or box are united bya seaming-machine of suitable form, and which will produce a rolled seam a of several laps or' folds, said seam projecting from the top of the can-head, so that it will lie entirely above the plane thereof and of the contents of the can or box. The material from which the can or box is formed is provided with the usual original coating of tin, and the several steps of forming the rolled seam are clearly disclosed in Figs. 1, 2, and 3.

When the seam has been rolled into sub stantially the form shown in Fig. 4, it is inclosed within a circumscribing envelop or casing A, which in Fig. 5 is shown as having a combustion-chamber I), having a slot 0 in its front, the upper and lower walls of which practically constitute jaws, since they are adapted to inclose the outer peripheral wall of the rolled seam and to closely engage the upper and lower" edges of the seam andfto confine the heat, so that it may have direct access to the outer portion of the seam.' Back of the combustion-chamber and separated therefrom by a foraminous wall is a second chamber (1, which contains a tube e, through which combined air and gas or other vapors may be admitted, which when ignited produce a wall of heat entirely circumseribing that when the body of heat is caused to im-.

. pinge directly and simultaneously against the entire length of the outer peripheral wall of the rolled seam the intense heat will fuse the original coating of tin between the confined adjacent faces of the outer folds to form a hermetically-sealed joint without the employment of a soldering-iron or of solder or other soldering composition. The inner peripheral folds or laps of the seam are also not substantially heated, as the external air acts thereon during the sealing process, and the contents of the can are not affected by the heat, as the rolled seam is entirely above the plane of such contents and projects above a [teases I I the plane of the outer-surfaceof the head, as ho v The operation of hermetically sealing the joints is thus greatly facilitated, and 'aieonsi'derable saving inthe cost of production and labor is effected. l

' Having thus describedonr invention,what

we claim as new, and desire to secure by'Letters Patent, is

The method herein described of hermetically sealing the heads upon fusibly-coated metal boxes and cans, which consists in first uniting the head .to the body by a rolled seam that projects above the plane of the head,

then inclosing the outer peripheral portion of said seam within a circu mscribiug envelop or casing so. that the inner peripheral wall may remain exposed .to external air, and then admitting a wall of heat to the envelop so that it will irnpinge simultaneously upon the entire length of the outer peripheral wall of the rolled seam to fuse the original coating between the confined adjacent faces of the

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