Till: iJ\M>\ MAX OX THE FARM. 



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So prepared, the share is ready for the welding which is done from the point 

 backwards. The depression forming the frog of the share makes welding 

 Bomewhat difficult at that point. This difficulty can be overcome by using 

 the set hammer shown in Fig. 5. This is placed on the lay in the frog and 

 struck witli the sledge. 



Fig. 18.— The finished Share. 



About four or five heats are usually required in welding a share such as 

 that shown. The welding of 3 or 4 inches at a time is fairly good work. 

 Fig. 18 shows the share after laying has been finished. 



Laying the Point of a Share. 



This consists of welding a piece of iron to the point of the share. Bar 

 iron If in. x § in. and 3 inches long is taken and scarfed as shown in Fig. 19. 

 The lay is welded to the underside of the point, and when scarfing the lay, 

 the hammering should be done on the opposite side from that which is to 

 be in contact with the share, so that the projection shown in the lay will fit 

 down well on to the share. The welding is similar to that adopted when 

 laying a pick. 



It will be noticed that iron is used in laying both the point and whig of a 

 share. This is so soft that in its natural state it wears away rapidly. The 

 wearing can be prevented by what is called " casting." After the share is 

 laid, it is brought up to a 

 welding heat, and at the 

 same time a thin piece ol 

 cast-iron is heated to a dull 

 red. While the welding 

 heat is on the share, the 

 red hot cast-iron is rubbed 

 over it in the fire. The 

 heat of the iron melts the 

 cast-iron, and a liquid coat 

 is obtained. When suffi- 

 cient of the cast-iron has been melted, the share is taken from the fire, and 

 with an old file or rasp the molten coating is spread evenly over the point of 

 the share. The effect is to give a coating of intense hardness, which makes 

 the share last very much longer. Any cast-iron, such as a broken saucepan, 

 kettle, &c, can be used. The thinner it is the better, as it melts more 

 easily. 



Fig. 19.— Laying the point of a Ploughshare. 



