38 APPARATUS TOR DRIVING COPPER BOLTS INTO SHIPS* 



Reference to the Engraving of Mr. R. Phillips's Method of 

 driving Bolts into Ships. Plate III. Fig. 3, 4, 5, 6. 



Fig. 3. 



A. The copper bolt, with one end entered into the wood, 

 previous to fixing the tube. 



B. A piece of timber, or (hip's fide, into which the bolt is 

 intended to be driven. 



Fig. 4. 



CCCC. The parts of the iron tube fattened together, ready 

 to be put on the bolt A. 



DDDDD. Iron or brafs rings with thumb-fcrews, placed 

 over the joints of the tube, to hold them firm together. 



EEEEE. The thumb-fcrews, which keep the rings and tubes 

 firm in their proper places. 



F. Two points formed on the lower ring : they are to flick 

 into the timber, and to enable the tube to be held firm in its 

 place. 



Fig. 5. 



Shows the feparation of the parts of the tube, which is 

 effected by flackening the thumb-fcrews and rings. 



To put them together, you Aide the rings over the joints, 

 placed as clofe as pofiible; then, by tightening the thumb- 

 fcrews, you will have them firm together, and may continue 

 the tubes to any length, from one foot to whatever number is 

 required. 



Fig. 6. 



GH. Two fteel punches or drifts, to be placed on the head 

 of the copper bolt within the tube, whilfi driving. The blow 

 given upon the punch drives forward the bolt. The fborteft 

 of them mould be ufed firft, and, when driven nearly to its 

 head, fhould be taken out of the tube, and the longer punch 

 applied in its place. 



VIII. Reply 



