History of the Typewriter
Forfatter: Geo. Carl Mares
År: 1909
Forlag: Guilbert Pitman
Sted: London
Sider: 318
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— 78 —
The pad from which the ink supply was derived was
contained in a metal case, which fitted closely round the
top plate of the machine and the types, when at rest,
lay imbedded in this pad. It is a curious fact, little
known to Yost operators of to-day, that in the earlier
models, this pad was made in two portions, but this
duplex arrangement soon gave way to the single pad.
Moreover, it is interesting to note that the earlier models
of the Yost were made with a variety of keyboards, that
is, the keys were arranged in such ways as to suit old-time
operators of the Caligraph, the Hammond, or the
Remington, the latter, of course, being in duplicate.
Fig. 6i
The accompanying sectional view of the type-bar of
this early model will interest those who like to know how
the machine worked. On the depression of the key, K,
the key lever, F, is pressed down at the key end, and,
swinging on the central fulcrum shown, is raised at the
type-bar end. This movement pushes up the connecting
rod, C, causing the type, D, to leave the ink-pad, P. The
movement of the type can then be easily followed, as it
finds its way to the guide, G. The link-holder, L, is a
fixed point, and it is this that gave the machine its
peculiar and rapid stroke.
The centre-guide has been the subject of a great many
discussions. The opposing party say that absorbs power,
that is, that part of the force of the blow is dissipated
the moment the type comes in contact with the guide,
and that consequently, either a heavier blow was necessary
than need be to secure a good impression, or that the
impression was not perfect. It was considered, also, that
ink was taken from the type-face and gathered round
the guide, which afterwards found its way on to the