Abstract: A method of manufacturing an inductive device of the type having a bobbin of insulating material on which a coil of wire is wound in which a bobbin of heat settable material is provided having at least one thinned down edge portion on at least one of its flanges in which the bobbin is clamped on the thinned down edge portion, the coil of wire is wound while the flange is clamped, the bobbin is unclamped, and the thinned down edge portion is formed over the coil.

Abstract: An inductor device including an outer frame type shell of magnetically susceptible material and a bobbin of insulating material on which a coil of wire is wound, with the bobbin fitting within the shell. The bobbin has the edges of its flanges bent over to provide electrical insulation against creepage and, in the preferred embodiment of the invention, the bobbin flanges are of a heat settable material. A method of manufacturing the inductive device with the bobbin is also disclosed.

Abstract: An improved method and apparatus for forming an electrical connection between electrical conductors by soldering. A lead wire with a coating of insulating material has a selected portion of the coating removed by a flame from a torch. The bared portion of the lead wire is wrapped around a second conductor such as a terminal, and the two conductors are then immersed in a low temperature, ultrasonically agitated liquid solder bath. The terminal also can have insulation which is burned off by the flame before the soldering takes place. The insulation on the lead wire can be burned off when it is wrapped around the terminal.