.~ Including character-selection latches (e.g., for type-face selection)
DEFINITION
Classification: 400/72
Including character-selection latches (e.g., for type-face selection):
(under subclass 70) Subject matter wherein the programmed-control-system* governs the selection or choice of a type-face* element that is part of a type-head* by way of components known in the typewriter industry as "character-selection latches".
(1) Note. The term character-selection latch refers to a component used in a typewriter having a spheroidal type-head that is supported by a type-head-carrier* that is mounted on a type-head carrier* (see the definition of carriage in the glossary). A typewriter of this subclass is provided with a plurality of these components (usually five or six), each of which is hook shaped to "latch" to a common actuator bar or member and is connected to a "whiffletree" arrangement of links. A signal representing a selected character* or function* causes one or character is selected, certain of the components will be latched and when another particular character is selected, other components will be latched or a different permutation of components will be latched.
Movement of the common actuator will move those components that have been permutatively latched thereto. Movement of the latched components will move the links of the whiffletree, and movement of the whiffletree links will be converted into tilting and/or rotational movement of a spheroidal type-head to thereby position the selected type-face so that movement of the type-head-carrier to the record-medium* will effect imprint of the selected character, or movement of the whiffletree links will be converted into movement of a selected function* (e.g., case-shift*).
