US663067A - Can. - Google Patents

Description

Patented Dec. 4, I900.

'E. E. DAVENPORT &. J. E. ROBINSON.

INVENTORS CAN.

(Application filed Sept. 22, 1900.) (No Model.)

WITNESSES flG-Am I y 7726066014; A/mm UNITED STATES PATENT OFFICE.

ELMER E. DAVENPORT AND JAMES E. ROBINSON, OF CHICAGO, ILLINOIS; SAID ROBINSON ASSIGNOR OF THREE-TENTHS TO SAID DAVENPORT AND JAY D. MILLER, OF SAME PLACE.

CAN.

SPECIFICATION forming part of Letters Patent No. 663,067, dated December 4, 1900. Application filed September 22,190(). Serial No. 80,866. (No model.)

To (ZZZ whom it may concern.-

Be it known that we,-ELMER E. DAVEN- PORT and J AMES E. ROBINSON, citizens of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Cans, of which the following is a specification, reference being had therein to the accompanying drawings.

Our invention relates to that class of sheetmetal cans in which an outside trough is formed upon the body of the can to receive sealing material, into which trough the downwardlyturned edge of the cover is to be placed and soldered to seal the contents of the can.

The invention consists in the peculiar construction of the trough from the sheet metal of the can and the double thickness of said material on the lip outside of said trough projecting above the upper edge of the can by which the latter is strengthened and protected from indentations, and' the cover is adapted to be solidly clamped by said lip, and thereby adding to the hygienic qualities of'the closure. The peculiar construction by which these advantages are obtained will be hereinafter described in connection with the accompanying drawings, in which Figure 1 is a vertical section of a can having its upper edge constructed with a lip or rim bent, folded, and pressed in accordance with our invention. Fig. 2 is a vertical section of a portion of the can, showing its upper edge surmounted by its cover having a downwardly-turned edge and around said cover a thin strip or ribbon of solder having its lower edge within the trough made to receive the edge of the cover. Fig. 3 is a vertical sec tion of a portion of the can, showing its upper edge surmounted by its cover,said cover being soldered to its surrounding lip and the upper edge of said lip pressed down upon the peripheral portion of said cover.

In said drawings the bottom of the can is represented by the numeral 2 and has its pe riphery bent and grooved, as usual, at 3 to receive the bottom edge of the metal plate 4, of which the side walls or body of the can is formed. To obtain the desired trough 5 around the upper edge 6 of the can, the plate is-folded upon itself at 7, adjacent to one of its edges, to obtain a doubled sheet-metal lip or rim 8. The portion 9 of the plate nearest to the edge 6 is bent back toward the inner side of the lip 8, but not quite parallel therewith, as the portion 9 is intended to be in line with the body of the plate l, so that the can constructed with said bent and folded plate will have preferably the same dimensions at the mouth as within the interior of its body. The upper edge 7 of the lip S is intentionally made to extend beyond the upper edge 6 of the can, so that the doubled edge 7 makes a Very strong and smooth finish for the @0111- pleted can and produces a very reliable fastening for the cover. Said cover is shown at 10 in Figs. 2 and 3 and has its downwardlyturned edge at 11, the inner surface of said edge being made to fit closely around the exterior surface of the portion 9 of the edge of the can to prevent the passage of solder between them. To unite and seal the cover 10 to the inner surface of the lip or rim 8, a piece of solder and soldering-tools may be used; but to expedite the work a thin strip or ribbon of solder l2, suitably bent in the form of a ring, is placed into the annular space between the turned-down edge 11 of the cover and the inner surface of the lip 8, as shown in Fig. 2. After having filled the can with the substance it is intended to contain the cover is soldered down either with handtools suitably heated, as previously mentioned, or automatically by pressing with a platen or passing rollers upon the upper edge 7 of the lip, and thereby clamping the strip of solder into its final position between the outer rim of the can and the outerside of the turned-down edge of the cover. The can is then placed, with its cover thus clamped and the strip of solder in its proper position,

under a heated plate of metal slightly con- I of relatively great length in Fig. 3; butit may be-of only half the length shown therein and yet be long enough to firmly clamp down the cover, so long as a portion of said doubled 5 sheet-metal lip slightly overtops the cover.

Having now fully described ourinvention, We claim- 1. A sheet-metal can havingits upper edge substantially in line with the walls of said 20 the upper folded edge of said lip being eX-' tended above the level of the upper edge of the can substantially as described.

3. The combination of the upper edge andwalls of a sheet-metal can, a circularlip sur- 25 rounding said edge and consisting of the walls of said can doubled upon themselves, the upper folded edge of said li'p being extended above the level of the upper edge of the can, with a cover having its edge turned downward, and a ribbon of solder material between said edge of the cover and thesurirounding doubled lip substantially as described. g

45. ThGGOlIlblUfltlOn of the upper edge and walls of a sheet-metal can, a circular lip surrounding said edge and consisting of the walls of said can doubled upon themselves,

the upper folded edge of saidlip being extended above the level of the upper edge of *the can, with a cover having its edge turned downward and supporting the edge of the doubled lip bent down upon said cover substantially as described.

In testimony whereof we affix our signatures in presence of two witnesses.

ELMER E.- DAVENPORT. JAMES E.'ROBINSON.

Witnesses:

P. H. FITZPATRICK, M. O. KENT.

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