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represents the two parts of the joint before being brought 

 together; and figure 2 the same when fitted together and ' locked.' 

 The locking is effected by the spiral wire, or ' worm,' brazed 

 round the rim of the lower ferrule, and over which passes the pro- 

 jecting slot, seen in the upper figures, which jams or clamps the 

 two parts of the joint together. An extra ferrule to which the 

 projecting slot is attached gives extra strength, at a spot where it 

 is critically necessary, and this strengthening has been further 

 increased by what the inventors term their " unbreakable splint 

 end ferrules." The ends, that is, of the ferrules are cut up into 6 

 " splints," which are bound down to the cane or solid wood, as 

 the case may be, with silk lapping. [Vide J inch of shading above 

 and below ferrules.] 



A B 



THE SERRATED FERRULE. 



