The Ice Hole Clam Spearer by Heath Robinson

An ingenious, though perhaps rather complicated device to catch clams through ice in the frozen north, part of a series of drawings entitled, aVery Patent Aides to Sport'. A piece of toast tempts an underwater clam, who, the moment it attempts to take a bite will have triggered a string, which sounds a bell which in turn alerts the hunter to cut another string and send a spear diving down to kill its prey

Aides Amusing Catching Clam Clams Complicated Contraption Contraptions Convoluted Frozen Ingenious Inventions Patent String

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