an incidental property, right or privilege, as to a right of way, a barn, or an orchard, belonging to a principal part and passing in possession with it.

Blast furnace:

introduced in the sixteenth century, a massively constructed retort in which iron ore, scrap iron, limestone and charcoal or coke were bellows blown to temperatures in excess of 1,100 degrees Celsius. Combustion was forced by a current of air under pressure; the resulting molten iron was tapped onto a sand floor, forming ‘pigs’ of brittle cast iron.


primitive predecessor of the blast furnace: an open hearth, bellows blown, producing blooms of wrought iron from ore and charcoal.


a portable grate.


hearth(s) used to reheat and thus refine pig iron to be forged under water driven hammers.

Hydraulic ram:

simple mechanical device utilising water pressure and compressed air to raise a volume of water above the height of its original supply.


a dwellinghouse with the adjacent buildings and curtilage and the adjoining lands used in connection with the household.

Slitting mill:

introduced from Germany c.1565, to produce small diameter refined iron rods especially convenient for small industrial users, eg nail makers.


artificial water course or channel, the flow stopped or regulated by a gate or valve.