742 



Journal of Agriciiliurc , Victoru 



[lo Nov., 1911. 



There is one mistake tliat perhaps ninety-nine out of every hundred 

 make in their first attempt to do this job; they bend too much over at 

 the ends, like that shown in Fig. 36^, and the consequence is that the link 

 is shorter than intended. 



Pipe Holdfasts. 

 A holdfast is a good exercise at forging and it is also a very useful 

 article. They are made in varying sizes to suit different sizes of pipe. 

 It does not matter whether they are required to fasten gas, water, or drain 

 pipes to the wall, the shape wdll be the same, but of course the length 

 and strength will have to be determined by the maker. Fig. 37 shows 

 the shape. 



f 



*T 



^W 



7w 



37. PIPE HOLDFAST. 



For the sake of illustration, let it be supposed that it is necessary 

 to make some to hold a down pipe from the roof guttering and that the 

 pipe measures -^in. diameter ; then, if made to measurements given, they 

 will be found to give satisfaction. About the most suitable m.aterial would 

 he I in. X ^ in., but if that size be not available, then they could be made 



' As _i in. 



sed in the 



square will 



1 b 



from -^ in. or i 



X ^ in. is not a usual stock size 



following description. 



Cu<, off a piece of 

 the bar tO' a convenient 

 length to hold in the 

 hand, heaj up one end 

 to a white heat and 

 hammer out on the 

 anvil to h in. x \ in. 

 as shown at a. Next 

 flatten out like h. It 

 should then be cut off 

 at + and the end 

 pointed similarly to c. 

 The opposite end is U 

 then heated and bent 38- holdfast for heavy pipes. 



to suit the radius of the pipe. 



The most important point in making holdfasts is to have the driving 

 shoulder made as square as possible. In driving, never strike the bent 

 part ; start by hitting the shoulder wdth the hammer and finally driving 

 home with a punch held on the shoulder. This is easier than trying to 

 drive all the way with the hammer alone. 



Fig. 38 is another form of fastening for pipes, principally those of 

 ii heavier nature. It is not very difficult to make. Each end is bent to 



