MANUFACTURING METHOD OF INSULATING TROLLEY

PURPOSE:To obtain an insulating trolley with high rigidity and with the small quantity of wax material to be consumed by setting the gap between the deep surface from the tip of the hooking section of a support member and the opposed surface of a contact member to the size that will not generate the capillarity causing the immersion of the wax material. CONSTITUTION:An insulating trolley is formed to cover a support member 3 that forms a slip stopping section 3a, straight section 3b, and hooking section 3c with an insulating cover 2. In addition, a conductor 1a is formed by externally engaging a contact member 4 whose width direction central part is the contact surface 4a with a collector. A space 7 at the depth from the tip section of the hooking section 3c within the contact member 4 is made more broader than the tip surface and the space outside the tip surface and the space 7 is set to the size that can interrupt capillarity. Consequently, when the support member 3 and the contact member 4 are fixed, melted wax material can be immersed into the depth from the tip surface of the hooking section 3c. As a result, rigidity can be improved and the quantity of wax material to be consumed can be reduced.