How they Changed History
Innovations to the Nails
The original was the Hand-Wrought nail (Pre-history-1800) where metal rods were hand forged into nail forms.
The first innovation was the Cut Nail (1800-1914) where machines were made to try to speed up and automatize the process of making nails.
The second innovation was the Wire Nails (1860-Present) these nails are made from coils of wire and this process has been completely automated.