US1149055A - Cutter-lid closure for circular cans having hermetically-sealed taggers-tin tops. - Google Patents

Description

1.]. HOURIGAN, DECD.

A. 12. WATT, ADMINISTRATOR.

CUTTER LID CLOSURE FOR CIRCULAR CANS HAVING HERMETICALLY SEALED TAGGERS TIN TOPS. APPLICATION FILED MAY 27, 1914.

1,149,055; Patented Aug. 3, 1915.

COLUMnlA PLANOGRAPH 60.,WASH1NOTON, D. c.

JOHN JOSEPH HOUIR-IGAN, DECEASED, BY WATT, ADMINISTRATOR, F

RANDWIGK; NEAR SYDNEY, NEW SOUTH WALES, AUSTRALIA.

CUTTER-LID CLOSURE FOR CIRCULAR CANS HAYIN I-IERMETIOALLY-SEALED TAGGERS- TIN TOPS.

Specification. of Letters Patent.

Patented Aug. 3, leis.

To all whom it may concern:

Be it known that I, ALEXANDER Gnonon WATT, a subject of the King of Great Britain and Ireland, residing at Avoca street, Randwick, near Sydney, in theState of New South Wales, Commonwealth of Australia, and administrator of the estate of JOHN J OSEPI-I HOURIGAN, deceased, the inventor of certain new and useful Improvements in Cutter-Lid Closures for Circular Cans Having Hermetically-Sealed Taggers-Tin Tops, do hereby declare the following to be a specification of the said invention.

This invention relates toimprovements in cutter lid closures for circular cans] having hermetically sealed taggers tin tops and it is directed to the provision of a slip-on rotatable lid having an integrally formed cutting nib or ripper of effective and improved construction.

Hitherto there have been attached independently formed cutting nibs or rippers to the lids of cans secured in such a way that they slide radially in slotsor guides formed near the edges of the llds. The sliding movement is necessary to permit the depend- 7 ing cutting nib being moved outwardly so as to normally lie between the depending portion of the lid and the top of the can.. To open the can in such construction, the lid is removed and the cutting nib or ripper then forced inwardly to such a position that it will pierce the top of the can when the 11d is forced thereon, when the said top may be removed by giving the lid a complete rotation. The disadvantages incident to the above-mentioned construction are the comparatively great cost of manufacture and the necessity of having the lids made much larger than the cans to accommodate the cutting nib when resting in its normal or 1noperative position.

In order that the invention may be readily understood reference will now be made to the accompanying sheet of explanatory drawings wherein: V

Figure 1 is a view in plan of part of a slip-on lid having an integrally formed cutting nib constructed according to the present invention. Fig. 2 is a view in sectional side elevation of Fig. 1 taken on thedotted line 1-1. Figs. 3 and 1 are views in transverse section of part of the lid, showing the 7 cutting cutting nib in its inoperative and operative positlons, respectively. Fig. 5 is an inverted plan view of Fig. 4. Figs. 6 and 7 are views in plan of part of a lid showing modifications 1n the shape of the cutting nib.

' In these drawings wherein like characters of reference indicate the same or correspondmg parts in the different views, a designates the 11d, in the top and near the edge of which is forced a V-sliaped slit I) having the apex pointing to the center thereof. The dies or swages employed to form the slit 5 also press up the metal around the same as shown at c and give tothe pointed nib (Z thus formed a concaved formation transversely to insure' it having a required degree of stiffness or cutting strength to resist all bending or twisting strains when in opera- 131011. The dies that emboss the nib (Z to give it its concave formation also form a step e at its base which'is adapted to abut against a bulb or heel and the adjacent edge of the said lid.

. lid a provided with an integrally formed nib or ripper cl as above described can fit snugly on a tin and no provision is required for the disposal of the said nib.

Thecutting nib may be given the shape shown in Figs. 6 and 7 of the drawings-or it can be given any other formation preferred or found most suitable for a particular requirement.

To open the top 9 of a can-see dotted lines in Figs. 3 and 4the cutting nib a? is brought into action by bending it downwardly as by-a finger nail or a penknife until it assumes a perpendicular position and is parallel with the rim of the lid. When the cutting nib is moved to this position and as shown in Fig. 4 of the drawings, the stepped portion e at its base bears upon the bulb or heel f which prevents it going beyond the perpendicular and insures its perfect rigidity when in action. After depressing the cutting nib (Z the same can be forced through the tagger tin top 9 and the lid a rotated to remove the same in the ordinary way.

The concave formation of the cutting nib d besides preventing it becoming distorted in action also causes the ragged edge of the tagger tin to be turned over neatly after the I I f formed on the inside of thelid aand between the base of the nib" thin sheet metal, and the outer curved face in operation has a rubbing bearing against the inner face of the rim and insures an even and clean out being made, through the tagger top as near as possible to the edge thereof.

What I do claim is 1. A can lid comprising in combination, an integrally formed piercing and cutting nib integral with the can lid and adapted to be bent downwardly out of its normal plane into operative position, said cutting nib being provided with a stepped portion and an inwardly projecting bulb, the said stepped portion being adapted to bear against said inwardly projecting bulb when the nib is bent downwardly in operativeposition.

2. A can lid having a rim and an inte grallyformed piercing and cutting nib of V-shaped formation with the apex pointing toward the center of the lid and formed with a stepped portion at its base, and an inwardly projecting bulb the stepped part of the nib being adapted to bear thereupon when the same is pressed downwardly to lie parallel with the rim of the lid, substantially as described.

8. A lid for cans having an integrally formed cutting nib, a stepped portion at the base of said nib, and an inwardly projecting bulb located between the base of the nib and the adjacent side portion of the lid,

and an embossment on that part of the lid from which the cutting nib is constructed and surrounding said cutting nib in its inoperative position, substantially as described.

4. A can lid having arim and comprising in combination a piercing and cutting nib integral withthe can lid, said nib being curved transversely and formed with a step at its base, an inwardly projecting bulb located between the base of the nib and the adjacent side of the lid, the stepped portion of the nib being adapted to lie adjacent to and parallel with the bulb when the nib is pressed downwardly, in an operative position. I I

In witness whereof I have signed this specification in the presence of two wit-v Gopies of this ipatent may be obtained for fivc'cents'each, by addressing the Commissioner of Patents, Washington, D. 0.

nesses. A. G. WATT,

Administrator of the estate of John Joseph H oum'gzm. T Witnesses:

A. J. CALLINAN, M. KENNEDY.

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