US1246947A - Process of making cans or metal receptacles. - Google Patents

Description

a. M. scHon.

PROCESS OF MAKING CANS 0R METAL RECEPTACLES.

APPLICATION FILED ocnzs. m4.

1 ,$46 ,947 o v Patented Nov. 20,191?

UNITED STATES PATENT OFFICE.

GEORGE M. SCHOTT, OF CINCINNATI, OHIO, ASSIGNOR TO THE CINCINNATI GALVA- NIZING COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

Specification of Letters Patent.

Patented Nov. 20, 1917.

Application filed October 29, 1914. Serial No. 869,194.

To all whom it may concern:

Be it known that I, GEORGE M. SoHo'rr, a citizen of the United States of America, and resident of Cincinnati, county of Hamilton, State of Ohio, have invented certain new and useful Improvements in Processes of Making Cans or Metal Receptacles, of which the following is a specification.

This invention relates to improvements in processes of making sheet metal cans or rethereby producing a more perfect can than is produced in a case where the metal forming the can is first galvanized and then manufactured into a can.

One of the difiiculties ordinarily encountered in the manufacture of large metal cans or receptacles which are galvanized, is that the heat to which the cans are subjected during the galvanizing operation, sets up unequal temperature strains in the metal of the can and often causes it to distort or buckle to such an extent that it is rendered useless. countered in the manufacture of large rectangular cans employed in "refrigerating apparatus as the receptacle for the water to be frozen, since a slight distortion of the metal forming thebody portion. of the can, prevents the easy removal of the ice therefrom.

An object therefore, of this invention is a process of making a can'particularly adapted to be used as a receptacle for water to be frozen in the manufacture of ice, which will prevent the objectionable distortion above referred to, and in which the interior thereof is kept free from corrugations or ribs,whereby smooth cakes of ice may be produced.

This and other objects are attained in the This difficulty is likely to be enprocess described in the following specification and illustrated in the accompanying drawings in which:

Figure 1 is a perspective view of a can constructed according to my improved process.

Fig. 2 is a sectional view taken on the line 22 of Fig. 1.

Fig. 3 is a sectional view taken on the line 3-3 of Fig. 2.

Fig. i is a somewhat enlarged fragmental sectional View of the metal sheet and the ribs formed thereon.

Fig. 5 is a somewhat enlarged fragmental sectional view illustrating a modified form of a rib.

Fig. 6 is another view illustrating a sheet having a modified form of rib.

Fig. 7 is another View illustrating a modified form of ribs.

The can illustrated as being constructed according to the process embodying my invention, consists of a body portion 7 formed of a ribbed sheet of metal, and a base portion 8 also formed of sheet metal. The body portion consists of a sheet of metal having triangulated ribs 9 formed therein. These ribs are preferably formed as illustrated in Fig. 4. and extend longitudinally of the four faces of the can, being located on the outer surfaces of the can so that the inner surfaces will be left smooth and free from any obstructions which would cause or tend to cause the cake of ice formed in the can, to stick therein when an attempt is made to remove it. In addition to this the interior of the can is thus rendered smooth so that objectionable corrugations and similar formations are prevented from being formed on the cake of ice. Although I have illustrated the ribs of the body portion as extending parallel to the vertical axis of the can, that is, from the closed bottom to the open top of the can, the ribs may extend 1n any desired direction so as to stifl'en the can laterally or longitudinally as desired. In addition to this the to and bottom of the can must be formed so t at there will be no reentrant or inwardly projecting shoulders or lugs which will prevent the ice from slipping out of the can. For thls reason I also construct the can so that the rlveting located at the top and along the longitudinal seam of the can will lie flush with the inner edge thereof. Counter-sunk flat headed rivets are employed to engage the inner surfaces of the can, so as not to break the continuity of the smooth interior surface. In constructing the can, themetal of the to portion of the sheet, above the ribs, is turne over to embrace a metal band surroundingthe outside of the body of the can and riveted thereto, the two thicknesses of sheet metal being held securely by means of the rivets 11, the heads of which, on the inner faces of the can are counter-sunk to be flush with the inner surface as shown in Fig. 3. This rim or band 10 is provided for the purpose of preventing the folded portions forming the ribs, from being expanded by the pressure of the water and also by theoperation of handlin the can. The bottom 8 is secured to thebo y portion as illustrated in Fig. 3, the sheet metal forming the body portion, being made sufliciently long to extend across the bottom edge of the flange formed on the bottom 8 and around a reinforcing band 12. This band 12 which reinforces the bottom 8, together with the flange of the bottom, and the two thicknesses of the metal formed of the sheet constituting the body portion of the can, are

held in place by means of the rivets 13. Be-

cause of this construction it is practically impossible for the bottom to be broken out and for the can to leak. By forming the bottom of the can in this manner I have eliminated the necessity of perforating the Because of this fact the can is rendered much more durable, since the metal of both 1 es the bottom and the body portion is left imperforate, thereby eliminating this additional feature of weakness where the galvanizing would be liable to become dislodged because of the loosening of the rivets. The

to two edges of the sheet forming the body portion of the can are preferably secured together by means of rivets as shown in Fig. 1 the rivets in this case as in the construction disclosed in Fig. 3, at the top of the can, also being countersunk so as to present a smooth interior surface. which will permit the cakes of ice to be readily removed from the can.

Although I have illustrated the ribs 9 as to being triangular in shape and formed from the sheet as shown in Fig. 4, I may also construct the ribs to take on the formation illustrated in Fig. 5, or any similar format on may be employed for the purpose of memes-r strengthening the can to prevent buckling in the galvanizing process. In Fig. 6, I have illustrated a form of rib which is formed solidly with the sheet, the ribs being rolled into the sheet, as shown, or I may rivet or otherwise secure separately formed ribs to the body of the can as shown in Fig. 7.

In the process of galvanizing the can, the joints and connections, as well as all crevices and places where two surfaces of metal abut, as for example where the two edges of the triangulated ribs abut, are filled with the molten-zinc or other galvanizing metal employed, thereby filling all joints and crevices. In addition to this the galvanizing process to which a can embodying my construction, is subjected renders the interior of the can perfectly smooth so that any inequality in the abutting1 edges, the joints where the rivets, pass t rough the sheet, or at the bottom of the can, are eliminated. This produces a can from which ice may be most easily removed and it produces a. can in which cakes of icehaving no corrugations or otheruneven surfaces are formed.

Having thus described my invention what I claim is:

1. A process of producing .a refrigerat 1 ing can consisting inv constructing a sheet metal can body having exterior ribs extending longitudinally thereof, with a smooth interior, and then galvanizing the interior and exterior of the body and ribs.

2. A process for producing a refrigeratin can consisting in constructing a sheet meta body portion having hollow ribs upon its exterior, with a smooth interior, and a bottom secured to the body portion, and then galvanizing the interior and exterior of the bottom, theribs, and the body.

3. A process for producing a refrigerating can consisting in constructing a sheet metal body-portion having exterior longitudinally extending hollow ribs, with a bottom secured to the body portion, and then galvanizing the interior and exterior of the body, ribs, and bottom.

4. A process for producingarefrigerating can consisting in constructing a sheet metal body-portion having hollow ribs u on its exterior, a bottom secured to the b0 y-portion having hollow ribs upon its exterior, and reinforcing bands secured to the top and bottom of the body portion, and then galvanizing the interior and exterior of the body,

.ribs, bottom, and bands.

5. A process of producing a refrigerating can consisting in forming upon a sheet of metal a series of transversely extending hollowribs, the ribs being located on one side of the sheet with the sheet portions between them forming a continuous substantially smooth surface on the opposite side,

bending the ribbed sheet to form the body of the can with the ribs located to the exterior and extending longitudinally thereof, attaching a bottom securing a reinforcing band to the top and bottom of the body, and then immersing the can in galvanizing material to close the crevices and 10ints.

In testimony whereof, I have hereunto subscribed my name this 26th'day of ber, 1914.

GEORGE M. SCHOTT.

Witnesses;

WALTER F. MURRAY,. W. THORNTON Boom.

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