Douglas Small Multi-Winding Machine

Douglas Small Multi-Winding Machine.

This machine is intended for the winding of very small coils for hearing aid and miniature radio and electronic work. It will wind either one coil at a time or two, three, or four simultaneously.

The motor is built into the machine and is capable of running at speeds up to 4,000 r.p.m. with control by means of a foot rheostat.

Coils from ⅛” (3·2 mm.) to ¾” (19 mm.) long and up to 5" (127 mm.) in diameter or diagonal can be wound, but the total weight of the coils must be low since the power available is only 1/30 h.p.

Wires from 0·0016" (0·04 mm.) to 0·0092" (0·23 mm.) can be wound and the spacing of the wire is achieved by means of a variable friction device.

Hier finden Sie 82 Modelle, davon 79 mit Bildern und 41 mit Schaltbildern.
Alle gelisteten Radios usw. von Avo (Brand), Automatic Coil Winder and Electrical Equipment Co., Avo Ltd; London