COMB FOUNDATION. 



68 



The Woiblet Spur-embedder (Fig-.45) has a grooved wheel 

 CO act upon the wire 



Fig. 45. 



WOIBLET SPDE-EJ1B3DDER, 



The following: method ot embedding the wire by electricity may be 

 of mterest. The frames are wired as directed (262), but a short 

 length of wire is left when cutting off after twisting round the tacks. 

 The foundation is next fixed and the frame thus prepared is laid on 

 the wiring board with the wires underneath. Two wires are now 

 taken from the terminals of a 4-volt accumulator, such as is used for 

 ignition purposes in motor-cars, etc. One of these wires is hooked 

 into the wire on the frame where it passes on the outside of the side 

 piece between B and C ; the other wire from battery is now held with 



Fig. 4sb. 



ELECTRIC EMBEDDER. 

 one hand in contact with one of the loose ends of frame wire (A or D). 

 The current of electricity, which will now pass through the portion of 

 the frame wire connecting the battery wires, heats this portion, and 

 a gentle pressure on the foundation with the free hand causes the 

 wire to sink into the wax, leaving behind scarce a mark to show 

 where it entered. When the wire shows through the bottoms of the 

 cells on the upper side, the battery wire is freed from contact with 

 the frame wire at tack, and the other strand is treated similarly. The 

 putting into circuit of a switch, which can be pressed by the foot, 

 greatly facilitates the operation by leaving both hands free. This 

 switch can easily be made by mounting an ordinary bell-push on a 

 small block of wood. 



