
Monotype Matrix Point Tool Grinding Machine
A motor-driven point tool cutter grinding machine, with built-in optical unit, 6-volt lighting supply through ratchet illuminator, single pulley band drive and bench mounted, 1/4 hp AC motor, 400 volts, 1425 rpm, with switchgear and belt. Plant number 1850. Part of the equipment used in producing Monotype matrices.
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This machine is one of many used in the process to make a 0.2-inch (0.51cm) or 0.4-inch (1.02cm) matrix. Some of the machines were designed at the Monotype factory in Salfords, Surrey, and other machines were purchased and adapted by Monotype.
There were 82 separate processes needed to transform a designer’s drawing of a letter, figure, punctuation or symbol into a piece of Monotype metal type for printing. A pantograph was used to trace and cut the letter from a copper pattern into a piece of steel called a punch. After being hardened, the punch was driven into a piece of bronze using a crank press to produce a matrix. The finished matrix was ready to go to the Monotype Composition Caster where molten metal was pumped through a mould against the matrix to produce a piece of type.
- Measurements:
-
overall: 440 mm x 550 mm x 350 mm,
- Materials:
- steel (metal) , aluminium alloy and brass (copper, zinc alloy)
- Object Number:
- 1995-1545/1
- type:
- machines
- Image ©
- The Board of Trustees of the Science Museum