1) The locket was the iron cross-bar of a window to which the glass was attached by small nails.
1355 In mercede fabri facientis pragges et lokats de ferro suo pro fenestris ligendis 8d, Ripon
1379-80 Et in C loketnayles 3˝ d, Ripon
1396-7 In palis et lokytnaylis et aliis necessariis ferri, 4d, Ripon. In 1379, the by-name Johannes Loket was recorded in Thornhill which was a nail-making centre.