Graphical Construction Glossary >> Tools. >> Power Tools >> Brunel Mortiser
Prior to 1805 all mortises used hand power to cut the slots. There were some quite sophisticated hand mortise "machines" that improved speed and accuracy before that; but machines like this one installed at Portsmouth Royal Dockyard for making the blocks for rigging sailing ships, were the very first true automated mortising machines. See one of Brunel's boring machines here.
These early machines relied on a heavy conventional chisel pounding up and down similar to the hand mortising machines.
These early industrial revolution machines where driven by water or steam power. The drive shaft from the power source was linked to the factory layshafts via a leather belt. The simple action of knocking off the main drive belt would remove power from all the factory machines. (Leading the origin of the term "knocking off time" etc.
Brunel use the drilled mortising technique with this machine. the rest was automatic.
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