US Patent 1,119,733, Type-Casting Machine
This is a 1914 US patent specification for a type-casting machine, filed by John S. Thompson and issued for use in typefounding and sorts casting, shown here as a digital reprint. The drawings are line-engraved patent figures showing numbered mechanical parts, including a vertical machine elevation with a mould, lever arms and a pulley drive, plus detail views of the casting mould and type body. A type designer or letterpress historian could take from them the mechanical logic of how hot metal type was cast and ejected.
