( .100 ) 
C B, The Shaft or Axel of the Gibbet with Pi- 
vots and Iron Hoops at Top and Bottom, and a Wheel 
of Iron, j;, having Teeth perpendicular to its Plane. 
This Wheel is led by a. Pinion, //, which is on the 
Axis of the Wheel'. iV, by whofe Arms a Man ftand- 
.ing at H may bring about the End of the Gibbet g 
with the Ram-head r, and the Weight hanging at 
it, either to the Right or Left, and eafily hold - the 
Gibbet in any Pofition, 
C T P (X, A ftrong Piece or Block having three 
Pullies, one vertical, and the other two horizontal, 
that the Rope may' run.over the Firft of them, and 
between the two others. 
Fig. Reprefents an horizontal Sedion of the 
Crane in its upper Part, or rather a View of it from 
the Plane of the Roof, fuppofing the Roof taken off. 
,N. B. The fame Letters mark the Parts which 
have been defcribed in Figure i. 
Fig. 3. Shew the Inconveniencies in the Motion of 
the Gibbet. 
L B E D, Reprefents Part of the Wharf next the 
Water, or Precipice of a Quarry. 
T P 0,5 The Block-Piece which holds the three 
Pullies, exprefs’d by the fame Letters in Fig. i and x. 
s g r G, The Arm of the Gibbet reprefented by V g. 
Fig. I. ^ ‘ r 
T, The vertical Pulley. 
P^Oj The horizontal Pullies, reprefented in ano- 
ther Situation by /, when their Centers from 
are brought to n and t. 
C, Is a Point diredly over the Pivot of the Shaft, 
or Axel of the Gibbet. ' f 
