Chapter 12 - Clocks and Associated Devices - Arming Clock: UES II and UES IIa with LiSChapter 12 - Clocks and Associated Devices - Sterilizers (Zeit Einrichtungen)
GERMAN UNDERWATERS ORDNANCE MINES
Chapter 12 - CLOCKS AND ASSOCIATED DEVICES
ARMING CLOCKS
UES II AND UES IIa WITH VORKONTAKT

The Vorkontakt is an intermediate switch which is closed 15 to 20 minutes after the UES has started. Its purpose is to switch in the anti-recovery switch (LiS) and any other scuttling charges incorporated in the mine.

Operation. The Vorkontakt, in either the UES II or UES IIa, ia a double-pole switch consisting of two sets of leaf springs held apart by a grooved roller, 1, figure 267. One set of leaf springs, 3, fits into the groove on the roller which is geared to the clockwork mechanism. Rotation of the roller in a clockwise direction causes leaf springs 2 and 3 to make contact and switch in the LiS.

Figure 267 – UES II/IIa

Chapter 12 - Clocks and Associated Devices - Arming Clock: UES II and UES IIa with LiSChapter 12 - Clocks and Associated Devices - Sterilizers (Zeit Einrichtungen)