journey to- wisp imbibed a ptirtion iofthat fi md , and discharged! it at
ttz-I:--— the upper surface ofii^hedw heelt; | bui.tb© (Shinese^ttfla
cönsj8ts5öf -a hollow wobdeSni tr unk, d i vided inlthblins
side atel%> the middle by a bdamd into two. compartments.
Flat and squato ■ pieces • of Wood, correspondirig
exactly to the dimensions of the cavity offahe trunky are
fixed to a chain which turns ovdr a toller.hr small, wheel
placed at each extremity offhe-’-trunk. ThehsqrMto
'pieces-hf wood fixed to the -chain move with- it round
the rollersj -alid dift up a Voluriieifdf water equal to the
dimensidns of the hohovr trunk, andato therefctfeieapldd
the lifters; The power dsed in workihg. thism&chine
is applicable in three different ways. I f tbe rfaaehine
be in tinned to lift a greatquantity ofwater, «everahsetd
of large Wooden arms ate made to project frdm various
parts u f thè lengthened axis offthè rollers^ over which
the chain and lifters turto . Those armS’ ato shaped likh
the lettor T, and made round artd smooth for the foot to
rest upon. The1, axis tuirns upon two! npbight piecis hi
wood, kept steady by a pole stretched-across thém. The
machine being fixed, men, treading upon the projecting
arms of the axis, and supporting themselves upon the
beam across the uprightsyeommunicate a rotatory motion
to the chain, thelifters attached to which draw up;&Kjoto-
stant and copious stream of water. This manner óf working
the chain pump is illustrated by the opposite engraving
; and is applied to the purpose of draining grounds,
transferring water from one pond or cistern to.another,
oi TaismgSit”lo,\small heigbfcSVqdt'of rivets, dr canals.
X <!A!hoth&ri;meSh.dd o f Wofkingitllés machine 111 by yoking
a büffdÉtir?athter^ahimalctod-lafge:hofizo,ntH;iWheelv
connected byto®gi.with the axis of thto rollers, Over