SAWS. 



187 



saws and according to their advice Dominicus & Sons have 

 constructed an ideal saw, in their " Non plus ultra." This 

 combines the advantages of the Tyrolese curved saw, with that 



o a o o 



Fi, r . 108. "Xon plus ultra'' saw of Dominicus. 



of perforation of the blade (p. 191). Such saws vary in 

 length from 4 ft. 2 in. to 5 ft. 10 in., and weigh 3 Ibs. 3 ozs. to 

 51bs. 12 ozs. and are sold at 8s. 6<7. to 13s. each (Fig. 103). 



An important adjunct to all 

 saws are the handles and the 

 arrangements for fixing them to 

 the blade. In the older saws, 

 the blade terminates at each end 

 with spikes, which are driven 

 into the wooden handles. 

 American saws have, however, 

 a better device, the blade not 

 being provided with spikes, but 

 the handles fixed to it by means 

 of screws and nuts, the former 

 passing through holes in the blade, as shown in Fig. 104. 

 This allows the handles to be removed readily, and the blade 

 withdrawn from the cut ; the blade can even turn on the 

 handle, Fig. 105. 



ii. One-handed Saws. 



One-handed saws are used chiefly for removing branches and 

 for pruning : priming-saws have been described in Manual 

 of Forestry, Vol. II., 3rd ed. p. 287. In one-handed saws the 

 blade may be kept stiff either by a bow or by being made 

 sufficiently thick. In bow-saws the teeth are oblique and 

 their points are inclined forwards if the work is done with an 

 upward stroke, or backwards for a downward stroke. Ahler's 

 bow-saw (Fig. 106), has a removable blade arranged so as 



104. Fiji. 1".-). 



Removable saw-handles. 



