182 Apparatus for Driving; Copper Bolts into Ships . 
dels of both are, however, preserved in the Society’s re 
pository, for public inspection. 
The instrument employed for driving the bolts, con- 
sists of a hollow tube formed from separate pieces of cast 
iron, which are placed upon the heads of each other, and 
firmly held thereto by iron circles or rings over the joints 
of the tubes. The lowest ring is pointed, to keep the 
tube steady upon the wood. The bolt being entered into 
the end of the hole bored in the wood of the ship, and 
completely covered by the iron tube, is driven forward 
within the cylinder by an iron or steel punch, placed 
against the head of the bolt, which punch is struck by a 
mall : and as the bolt goes further into the wood, parts of 
the tubes are unscrewed and taken off, till the bolt is 
driven home into its place up to the head. 
The tubes are about five inches in circumference, 
and will admit a bolt of seven- eighths of an inch in dia- 
meter. 
Deference to the Engraving of Mr . JL Phillip’s Me- 
thod of driving Bolts into Ships . Plate 5, Fig. 3, % 
5 , 6 . 
Fig. 3. 
A. The copper bolt, with one end entered into the 
wood, previous to fixing the tube. 
E. A piece of timber, Or ship’s side, into which the 
bolt is intended to be driven. 
Fig. h. 
CCCC. The parts of the iron tube fastened together, 
ready to be put on the bolt A. 
DDBDD. Iron or brass rings with thumb-screws, 
placed over the joints of the tube, to hold them firm toge- 
ther. 
