US663415A - Metallic can. - Google Patents

Description

No. 663.4!5. Patented Dec. ll, I900.

V G.-W. CHARLES.

METALLIC CAN.

lication filed Apr. 10, 1899 Fries.

PATENT GEORGE W. CHARLES, OF KOKOMO, INDIANA.

METALLIC CAN.

SPECIFICATION forming part of Letters Patent No. 663,415, dated. December 11, 1900.

Application filed April 10, 1 89 9.

To all whom it may concern.-

Be it known that I, GEORGE W. CHARLES, a citizen of the United States, residing at Kokomo, in the county of Howard and State of Indiana, have invented a new and useful Metallic Can, of which the following is a specification.

This invention relates to packing and storing vessels, and has special reference to cylindrical metallip cans of the type that are usually employed by canning establishments for sealing therein fruits, vegetables, and other food products which are commonly known in the trade as canned goods.

The main and primary object of the present invention is to provide a novel construction of metallic can which shall preserve the general shape and form of the ordinary cylindrical fruit and vegetable can, while at the same time providing a can structure having exceptional strength and requiring a minimum amount of material in the formation thereof.

A furtherobject of the invention is to construct the can with a novel arrangement of seam which positively prevents leakage and effectually excludes the solder from working within the can While being. formed.

In the manufacture of the ordinary cylindrical fruit and vegetable cans three separate and distinct metal blanks are requirednamely, the main body-blank, which is bent into cylindrical form, with the edges thereof meeting in a longitudinal side seam extending the entire length of the body, and separate circular blanks for the ends of the canbody. This method of constructing the common tin can is the one usually resorted to, but provides for three dint-inct joints by reason of the lapping of the different blanks, and consequently involves a considerable waste of material and the employment of a large amount of solder. Furthermore; the plurality of seams not only require considerable time and labor for the manipulation of the cans during the process of forming the same, but also present a maximum area for leakage.

The present invention provides a construction of can that overcomes the objectionable features of the ordinary method of manufacturing above referred to, while at the same Serial No. 712,439. \No model.)

time having the general shape and all of the characteristics of the ordinary can, so as not to interfere with the proper labeling and filling thereof.

With these and other objects in view, which will readily appear as the nature of the invention is better understood, the same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated, and claimed.

\Vhile the fundamental combination of parts constituting the present invention is susceptible to modification without departing from the spirit or scope thereof, still the preferred embodiment of the invention is shown in the accompanying drawings, in which- Figure 1 is a perspective view of a fruitor vegetable can constructed in accordance with the present invention. Fig. 2 is a cross-sectional view at one side of the plane of the inwardly-projectinginterior lock-seam. Fig. 3 is an enlarged detail sectional view on the line 3 3 of Fig. 2. Figs. 4 and 5 are details in perspective,respectively,of the separate sections or halves of the can-body prior to the assembling thereof. Fig. 6 is a plan view of one of the circular blanks from which each of the body-sections is formed.

Like numerals of reference designate like and corresponding parts in the several figures of the drawings.

In carryingoutthe invention the cylindrical can-body is constructed of two cylindrical interlocking sections 2 and 3, which bisect the body transversely thereof, and each of the sections or halves 2 and 3 is formed from a single circular blank X, cut in the proper size, so that when the two sections or halves are struck up the same will he of equal diameter, whereby the exterior surfaces of these sections will be perfectly flush, and thereby present a smooth exterior cylindrical surface for the can-body throughout the entire area thereof, so that the labeling may be applied thereto in the usual manner without interference from projections of any sort,as may be plainly seen from the drawings.

The circular blanks X from which the sections or halves of the cylindrical can-body are stamped up may be cut out from sheet metal by means of any suitable machinery, and at this point it will be observed that the circu lar blanks for the two sections of the canbody are exact duplicates, with the single exception of the blank for the upper section 2 being provided with the usual central filling opening or hole i.

In the process of manufacturing the can, after the circular blanks for the sections have been cut out by suitable machinery through the medium of proper dies the blanks are stamped up and drawn into the proper form of the body- sections 2 and 3, so that these sections willevenly and accurately register when assembled. In its complete struck-up form the upper cylindrical section or half 2 of the can-body is provided at its lower circumferential edge with an inturned seam-flange 5, while the lower section 3 of the can-body is formed atits upper edge with an inwardlybent shoulder-ofifset 6, having an upstanding lock-flange 7, adapted to be bent around and over the seam-flange 5, thereby producing an interior inwardly-projecting circumferential lock-seam which rigidly locks the two sections of the body together, while at the same time leaving a perfectly flush exterior joint.

The contiguous shoulders at the meeting edges of the body- sections 2 and 3 closely abut, but necessarily form an exterior peripheral solder-receiving crease 8, which is preferably filled with solder to make a hermeticallysealed joint, and at this point it will be observed that by reason of having the lock-seam within the interior of the can-body it is impossible for the solder to work therethrough into the can. Furthermore, the construction described positively prevents acids from mixing with the contents of the can and only necessitates the use of a minimum amount of solder, whereas in the ordinary construction of fruit and vegetable cans a plurality of seams have to be soldered.

Afurther advantage of the interior circumferential lock-seam for joining the meeting edges of the two sections together resides in the fact that such seam forms a continuous double thickness of material around the central portion of the can-body, thus greatly reinforcing this part of the can, which in ordinary constructions is very weak.

It will be noted that the bead formed by the locking-flange 7 is located directly opposite the point of engagement of the adjacent meetin g edges of the can-sections and extends substantially equally at opposite sides of the joint, thereby reinforcing the same at its weakest point.

Other advantages for the construction described will suggest themselves to those skilled in the art, and it will also be understood that changes in the form, proportion, size, and the minor details of construction within the scope of the appended claim may be resorted to without departing from the spirit or sacrificing any of the ad vantages of this invention.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-- A metallic can consisting of upper and lower sections, each formed from a single blank of sheet material, the lower circumferential edge of the upper section being inturr'ied at an angle to form a seam-flange, and the lower section provided at its upper edge with an inwardly-bent ofiset having an upstanding lockflange adapted to be bent over the said seamflange of the upper section to form an interiorly-located circumferential lock-seam leaving an exterior peripheral solder-receiving crease, thereby forming a can-body with an intermediate joint having an exterior portion flush with the outer wall of said body and without indenting or irregularly constructing the exterior of the body.

In testimony that I claim the foregoing as my own I have hereto aifixed my signature in the presence of two witnesses.

GEORGE W. CHARLES.

Witnesses:

J OHN H. SIGGERS, Y. PERRY HAHN.

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