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Internal pressure from the carbonation pressed against the convex surface resulting in lateral pressure which held the disk firmly in the groove.

An imbedded wire shank in the top of the disk was used, in conjunction with a hook or pointed instrument, to pull the seal from the bore of the bottle and access the contents.sealing surface for these two main types of lightning-type closures was different; that information is found below.

All of these variations saw some limited use during the same period as the "true" lightning closures.

The bottles these lightning type closures are found on date in the same range, though likely closer to the actual patent date since none received the widespread acceptance of the original lightning.

The actual "stopper" or lid portion of this closure was usually made from either metal or porcelain/ceramic with a round rubber gasket attached to the shank of the stopper to seal the bottle (gasket shows in picture below).

The picture above is of a lightning closure with a metal lid with the gasket missing.

He is proprietor of the Brewery; and connected with several other business enterprises.He is a member of the Boston Chamber of Commerce, the Ancient and Honorable Artillery Comrany and the Bostonian Society.He has traveled extensively, and in 1907 made a trip around the World.Thehooked into loops in the heavy neck tie-wire on opposite sides of the bottle.Movement of the lever wire past the line of centers of force was stopped by the neck of the bottle." The illustration to the right shows the configuration of the closure without the bottle (Lief 1965, courtesy of the Glass Container Manufacturers Institute).

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