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Expired
Application number
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William Righter Comings
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Individual
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Individual
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Publication of GB190428926ApublicationCriticalpatent/GB190428926A/en
28,926. Comings, W. R. Dec. 30. Stamping.-Seamless lids for paper or cardboard boxes or canisters are made with flanges or rims at the top. A cup-shaped lid with straight sides and a domed top is first stamped up from a disc and is placed between dies a, b, Figs. 3 and 4. The outer die a is secured to the holder d, and the inner die, provided with an air hole, is secured to a table by a screw e. A plunger f, preferably heated, forms the flange as shown. Combination dies or a tripleaction press may be used to form the lids at one operation.
GB190428926D1904-12-301904-12-30Improvements in Boxes
ExpiredGB190428926A
(en)