B O O K VII.
M E C H A N I C S;
A.CO M PjR E
Defctipiwns and Explanations of fuck of the Societfs' Machinés ind
Models^ in Mechanicsi as are reprefented in the Copper-plates hereunto
annexed.
c y a . p, i . ,
A Defcription o f Mr. Sta^fjejd’s Model o f »jrS-A W - M I
P L A\/jc.E I F I ^ T i,
A perfpeSRve View) o f .Mr.''S-TAttrrEiij’s VS A W -M I L L .
A,. A Water-wheel, eighteen inches in diameter, and’five inGhe|' and-'an
i l half on the periphery, carrying twenty-fomrbuckets',"Its fhaft.is
two feet nine inches long, from fhdulder to . flioulder, arid two finches apd
feven-eighfhs fquare; ;•
B, A- Crown-wheel, ’on the fame Jhaft as the water-wheel, its diameter
.fifteen inches and a quarter, with fixt-y-fotir cogs. -See Plate, II.
Fig.*2.- |
‘ C, A Lantern-Wheel, fix inches in diameter, with twenty-four trundles.
D, A Triple Crank, or Axis of the Lantern-wheel. Its extreme length
is twenty-fhree inches, thicknefs one inch and an half. The radius of* the
Crank is one inch and .ail half. See Plate II. Fig. 2» %
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