History of the Typewriter
Forfatter: Geo. Carl Mares
År: 1909
Forlag: Guilbert Pitman
Sted: London
Sider: 318
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—280—
The inventor was recently stated to have been working
on another machine, the model of which was likely to be
ready for inspection at an early date.
Mackness. This machine was announced in 1895,
and was to be issued from Dundee. It is described as a
shift-key machine, and the announcement states that it
embodies several important points which are not embodied
in any other machine so far on the market. The inventor
is Mr. C. F. Mackness, son of Dr. Mackness, of Broughty
Ferry. It does not appear, however, that the Mackness
ever took actual shape.
Matrix Forming Machines. A number of patents
have been secured covering methods whereby the impression
made by the type can be converted into a matrix from which
a stereotype block for printing can be formed. It is clear
that if a thin sheet of pliable metal, say pewter, backed by
blotting paper, be fed into the machine, and the ribbon
removed, the sharp face of the type will form indentations
corresponding to the keys struck. This indented sheet
of metal may then be treated in either of two ways. First,
the indentations may be filled up by means of very fine
plaster of Paris so as to make them firm enough to withstand
pressure during the act of printing, and the sheet then
mounted type high and used with other type or blocks
in the forme ; or, secondly, a proper stereotype might
be made from the metal in the usual way.
The former of these processes is the basis of a series
of patents by Messrs. Hetherton & Cordeaux, and is
developed in the form of a duplicating apparatus. The
work turned out by this process is exceedingly clear and
sharp, but the printing operation is very slow and it has
not been found practicable, owing to inking difficulties,
to do good work of a larger size than octavo.
In other patents, machines have been made to perforate
the paper used as stencil into a series of dotted holes, and
photography has then been called in to assist in converting
a sensitized metal plate into a stereo by the action of light
passing through the openings.
Electricity has been requisitioned to increase the force
of the blow and either new machines devised for the purpose,
or as (according to La Plume Stenographique) was the case
with an invention by M. Jules Buse, an ordinary type-
writer has been converted. M. Buse used a Williams.
He attached one of the poles of the battery to the keyboard,
the other to the platen. Typing on to a sheet of flexible