PLAN No. 1071. COIL WINDING AND TAPING
In many electrical devices, coils of insulated copper wire-magnet or armature windings of one sort or another are required. Consequently a large number of coil winders are employed in most electrical factories. Coils are usually wound on forms in accordance with specifications prepared in the engineering department. The “form,” upon which the coil is thus wound, is clamped on the head of a winding lathe operated by power. In this form is a groove, in which the convolutions of the winding are wound. The groove is of such size that it insures the correct number of turns in the coil so that the finished coil shall be of correct dimensions. When the attendant presses a treadle, power furnished by a belt causes the form to revolve, and insulated copper wire from a spool mounted on a rack is guided by the attendant and wound into its place in the groove. After the required number of turns, the form is removed, and the coil is taken from it by the attendant who then starts winding the next coil. Frequently it is necessary to produce a large number of identical coils. Where this condition obtains, automatic devices of one sort or another, to reduce manual effort and to render the processes automatic in so far as possible, may be employed.