US 1629441 A
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May 17,1927. 1,629,441
R. O. GEARY LEVER TOP CAN Filed Jan. 29. 1924 Patented May 17, 1927.
UNITED STATES ROBERT OLIVER GEARY, OF ROCKDA'LE, AUSTRALIA.
I LEVER-TOP CAN.
Application filed January 29, 1924, Serial No. 689.289, and in Australia February 17, 1923.
5 at its outer periphery to the edge of the body of the can.
As hitherto constructed the collar is not of suficient strength and rigidity and is apt to be depressed or distorted and the flange thereof split by the action of the forcing into position of the top or cap, resulting in a detective joint which is neither air-tight nor fluid-tight and may permit the escape of the contents of the can.
The object of this invention is to provide a can ot which the collar is so, strengthened as to be capable of maintaining its form against the pressure required to force home the top or can.
With this object my improvements consist in the provision of corrugations or equivalent deformations in the collar of the can. so arranged and disposed that the collar. instead of being a. plain annulus. is ribbed or bulged at intervals and thus strengthened against flexure.
Two alternative embodiments of my invention are illustrated in the accompanying drawings to which I will now refer.
1 is a part perspective view of a lever to can (with top) embodying one form of my improvements, i. e. spaced radial corrugations.
Fig. 2 a fragmentary perspective (partly in section) of the collar;
3 a part sectional elevation to a larger scale of the upper part of the can taken through one of the corrugations;
Fig. 4 is a similar view to Fig. 2 but showing a modification in the shape of the collar strengthening means, i. e. bulges.
Fig. 5 is a part sectional elevation to a larger scale of the construction shown in Fig. 4:. taken through one of the bulges.
spaced A is the can body, B the top or cap and C the collar which on its internal periphery is formed with an annular cylindricalflange.
D (Figs. 3 and 5) within which the cap B should make a tight fit.
It is when forcing the cap B into the annular flange D that the collar C is apt to be depressed or distorted with the result that the flange D may lose its cylindrical form and the cap B not make an airand liquid-tight joint therewith. Therefore I strengthen the collar by spaced radial corrugations E E shown in Figs. 1. 2. and 3. or by spaced spherical bulges F as shown in Figs. 4 and 5. These corrugations or bulges may be outward as shown or inward and formed at the same time as the collar is stamped or pressed so that no additional expense is involved beyond the preparation of a suitable die and mould.
What I claim and desire to secure by Letters Patent is: i
A container of cylindrical form. comprising a body, a top of circular form secured to the upper edge of said body. and formed with a central circular aperture, said top being also formed with an annular channel between said aperture and the outer edge of the top. the bottom of said channel inclining upwardly towards the centre of the top of the container, said top having also a down turned flange constituting the wall. of said aperture, and a dished cap fitted within said down turned flange and having a horizontal flange extending partly over said annular channel. the bottom of said channel being formed with radially disposed and upwardly pressed deformations extending under the flange of the cap to resist buckling of the top under pressure required to force the cap into the aperture.
Signed-at Sydney. New South Vales this twenty-fourth day of December, A. D. 1923.
ROBERT OLIVER GEARY.