(tool) 
that:nQ Clock- maker that doth not underfiand how to apply 
the force of afpringco the motion ofa Clock, 
4 New Ungintomake lAnen-Chth without the helpef an 
Artificer^ f re fented to the Royjil Academy ^ hy Monfieur de 
I, Gennes , an Officer belonghg to the Sea. ExtraBed out 
'\ of the Journal deScdiVdSiS 
THis Engin is no other than a Mill, to which are applj'd 
all the parts ofa Weavers ordinary Loom- 
ThisMill is compofed of four principal parts , rhat is to 
fay , the Serpent ^ y^, two Footfteps orTreddles BBpx\Q 
Clapper C^aijd two Arms jDDDP. 
The Serpent: or Iron Barr J^has twoElbows E E, where- 
to the ends of the Ropes are fix'd that raife and put down the 
Foot fteps BB. FPare two fourths ofa Circle, that fuc- 
ceffively reft upon two Arches or Bows of Iron G G^which 
are above the Clapper C. toraifcit» J/ If are two Teeth of 
Iron, added to theSerpent making an Angle of degrees 
with FF and KK^ which ferve to put down a Bafcule or 
Smep which is in the Arm that carries the Shuttle, The 
Footfteps or Treddles differ in nothing from thofe which 
are ufqally made ufe of, only the Cords that hold them pen- 
dent from the ground are fixed in theElbows of the Serpenr^ 
which in turning raifes and puts them down by the help of 
two little pullies, upon which the Ropes turn. 
The Clapper is fupported between tv^o Pillars with a 
Rope double twifted , which makes it to make a kind of a 
Spring, and caufes it naturally to give forwards to beat the 
Cloth. 
L M is one of the Arms which pafs freely into the Canal 
orPipeiVriV,rupportedby four Pillars of Wood 0000^ 
The Motion of it proceeds from the following Parts.P ^ is 
a Bafcule whicb,though unequally divided by its jfupporter 
Syls yQt in EqMihrio ^ the end PK being made to weigh 
exaflly as muchas i3t^;iifcr 
At the Extremity of this Bafcule is tyd a Cord which 
pafles through the PuIlyS,and terminates at the Extremity 
of the Arm,where it is faftned to a little Forvle M. At the 
^her Extremity of the fame Arm that is to fay towards L, is 
6 alfo 
