US PATENT SUBCLASS 400 / 26
.~.~ Against cylindrical backing


Current as of: June, 1999
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400 /   HD   TYPEWRITING MACHINES

23  DF  FOR TYPING ON FLAT RECORD-MEDIUM OR AGAINST FLAT PLATEN {14}
24  DF  .~ For typing on a book {4}
26.~.~ Against cylindrical backing


DEFINITION

Classification: 400/26

Against cylindrical backing:

(under subclass 24) Subject matter wherein the book that is being typed on is supported against movement away from the type-face* that is impressed against the book, the support being an elongated member that is circular in cross section.

(1) Note. The back or supporting is similar in configuration to a cylindrical platen*, but the book is not partially wrapped about the platen as in the usual typewriter where the record-medium* encompasses the platen through approximately 180 deg.. In this typewriter, the book is

approximately tangent to the surface of the cylindrical backing.