printing key frame
now historical
noun
A typewriter for producing embossed type, designed for use by blind people.
- The device was patented by Pierre Foucault in 1849 and was exhibited in London at the Great Exhibition of 1851..
Origin
Mid 19th century.
- powder bowl
- powder box
- powder burn
- powder cake
- powder cart
- powder chamber
- powder chest
- powder closet
- powder-coat
- powder color
- powder colour
- powder compact
- powder division
- powder douce
- powder-down
- powder dust
- powdered
- powdered blue
- powdered sugar
- powderer
- powder flag
- powder flask
- powder gas
- powder gun
- powder horn