Dating hole in cap cans
Another solution was to deposit the pulled tab in the can.
While this may have been less environmentally injurious, it was not without its dangers.
: In the 16 years after Cudzik’s patent, “the stay-on-tabs alone amounted to over 4 million tons of aluminum that was recovered and recycled rather than discarded.” Curiously, the problem of ingested tabs has not gone away: In 2010, an article in that he thought can tab design had reached a point “where I don’t believe there’ll be too many changes anymore.” But is design ever done?
A 2007 study that looked at the ergonomics of can-tab pulling (using finite-element analysis to analyze the “deformation of the fingertip pulp”), for example, suggested that a larger tab would reduce discomfort.
1820-1925: Tooled finish (Jones and Sullivan 1985: 165).
1877 – 1920: Vent marks (Jones and Sullivan 1985: 165).
1886: The first machine to make narrow-mouthed bottles was developed. It involved the hand-gathering of glass (Douglas and Frank 1972: 178).
1889-present: Machine-made bottles (Jones and Sullivan 1985: 165). Originally made with a finishing tool (Jones and Sullivan 1985).
Cathy Spude compiled the following dating information for use by the public and professionals.
Like Coors itself, which for a Midwesterner had a certain exotic appeal, there was an intriguing novelty to the design of the “press tab,” as the company called it; one that quickly lost appeal for drinkers (particularly those on the downward slope of a six-pack) trying to puncture through, and then retract their fingers from, the smaller, sharp-edged opening.
But Coors wasn’t the only experimenter; as the website notes: “Crown, Cork, and Seal tried a top that you pressed down then slid a tab to one side, pushing a hole into the can top.
1905-1982: “Owen’s” mark on bottle base (Miller and Mc Nichol 2002).
1905-1920: 6 oz, 7 oz, and quart soda pop bottles standardized (Kaplan 1982).
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1825: Aluminum first isolated (Encyclopedia Britannica 1973 (1): 693).