The First Steam-Boat
Forfatter: Jonathan Hulls
År: 1860
Forlag: E. & F. N. Spon
Sted: Bucklersbury
Sider: 48
UDK: 629.120(09)
Description And Draught Of A New-Invented Machine For Carrying Vessels Or Ships Out Of, Or Into Any Harbour, Port, Or River, Against Wind And Tide, Or In A Calm.
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C 14 3
more or leis, according,to the Nature of
the Machine-, for the larger a Wheel, ö?c.
is, and the leffen theZxis, the leiferthe
Trichonwill be hf contra.
But- fince our piefent Furpofe cannot
be compleated by a.ny Mechanical Rules
only, (Became, -there can no Motion be
contriv'd to be-work’d, by ManwaJ-Ope-
ration, to move both with Power and
with Swiftnefs Sufficient to Anfwer the
intended Work ) in order -therefore to
Drive -this Machine wears forced+o ap-
ply the weight of the Jltnwfyhere ; The
Nature of which I fhall now Endeavour
to Explain.
The Mtmofphere being an invmbleFluid,
it will be proper to give forne Ticcount
of Fluids in genera].
Of F LV1D5.
ff A Fluid is a ïoJy whofe.parts yield
Cf to any force impreft, and by yielding
c< are very eafily moved one among ano-
« -th er.” Whence it follows that fluidi-
ty anïès from this> that the Patts do not
ftxongly co-here, and that the Motion is
not hindredby any inequality in the Sur-
face of the Tarts.
Fluids