Wrought-iron, side-hung casements supported on iron pins, known as ‘gudgeon pins’ or ‘pintles,’ were used in domestic architecture from the sixteenth century.
Defnyddiwyd casmentau haearn gyr wedi'u hongian ar eu hochrau a'u cynnal ar binnau haearn, a elwid yn 'warbinnau' neu'n 'bowltiau', mewn pensaernïaeth ddomestig o'r unfed ganrif ar bymtheg.