History of the Typewriter
Forfatter: Geo. Carl Mares
År: 1909
Forlag: Guilbert Pitman
Sted: London
Sider: 318
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The Crown. This machine is the invention of Mr.
Brooks whose other machine, named after himself, we have
already dealt with. It was placed on the market in 1888,
and has its types arranged in three rows of twenty-seven
each on the periphery of the wheel. The wheel strikes the
Fig. 177.
platen in a manner somewhat resembling the Blick, and
the inking arrangements are also after the same description.
The type-wheel being of metal, and the platen of hard
rubber, manifolding may be easily executed on the Crown.
The type-wheels were interchangeable, and several varieties
were procurable.
The Century. This is an instrument using a pointer,
on the Hall principle, and is also the invention of Thomas
Hall, of New York, whose first invention was described in
our first chapter, page 33. Using a type cylinder with ten
rows of type of ten characters each, making one hundred
Fig. 178.
characters, this form allows the greatest number of characters
to be embodied, in a. very snicill cincl portable instrument.
The cylinder is rotated by a rack fixed to a sliding handle
operating a pinion at end of the type cylinder. The frame
in which the cylinder is held slides in the frame to which