Help me!! when be the appliance for inside layer machinery invented? i know it sounds boring but it'll bring back u 10pts!?

ok so i have this history thing where on earth we have to find dates for when different things be invented....and we have to find out when the mechanism for pool liner machinery was invented..i know that Elijah McCoy invented it but i have no model when it was invented! please please please help! :)
Answers:
the components for lining machinery was invented within the late 1800s. i think around 1877? i'm not sure. it be definitely the late 1800s, though.

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