194 



journal of Agriculture , Victoria. [lo March, 1912. 



near edge of the anvil about f of an inch of the round bar. and flatten it 

 out to, roughly, | inch thick (see B). The fuller should then be requisi- 

 tioned to form like C\ ^Vhe^ the two jaws are thus formed the handles 

 are prepared for welding on. For a light pair made from |-in. diameter 

 ^g--in. round is quite heavy enough. Two pieces of that size 18 inches 

 long are cut off and one end of each upset to, say, f-in. at the end, 

 gradually tapering back about 3 inches. The welding together requires 

 no explanation further than that given in the Journal for January. 



When each jaw has been welded on to its handle, it is reheated and 

 flattened out to the required shape, and a hole punched for the rivet. 

 Fitting the jaws tO' each other and ri\'eting them together are the next 



operations. To make the 

 ri\'et, select a round bar 

 . about -g-in. larger than the 

 O hole ; heat tO' welding and 

 round down to slightly less 

 than the diameter of hole. 

 Cut nearly through at a short 

 distance (about j inch is 

 usually sufficient) back from 

 the shoulder formed hy re- 

 ducing the bar; this en- 

 larged piece forms the head 

 of ri\et. Cut the drawn out 

 part oft, just long enough to 

 go through both jaws, and 

 project out sufficient for 

 riveting. Heat the ri\et 

 liefore finally .separating 

 from the bar. and place in 

 the hole. By a backward 

 and forward motion the bar 

 will break off, leaving the 

 rivet in the hole ready for 

 hammering. 



After riveting it will be 

 found that the tongs will not 



FIG. 52. W'IRE STRAINER. 

 [a) Shows the strainer in position, (b) The barrel and stop. (c) The key. 



work unless put into the fire and made red hot. This has the effect of 

 releasing the tension of the rivet. Whilst still hot, set the tongs to the iron 

 thev are intended to hold, and cool out. 



A Wire Strainer. 



A simple, and at the same time effective, wire strainer may be cheaply 

 and quickly made by pursuing the following method : — 



The materials required are a short piece of gas or water pipe 5 inches 

 long and i inch internal diameter; a piece of -^-in. round iron to make 

 the stop ; about 4 inches of i-in. round iron or mild steel (the latter for 

 preference) and 12 inches of f-in. iron. A. Fig. 52, is a sketch of 



