Demonstration Set No. 7

This is a wooden tablet fitted with two Bell No. 56's.  One bell is converted to single stroke working and has a specially made wire gong.  The other bell has a Gong No. 18 associated and a Transmitter No. 21 located inside the gong.

Found in Diagram 61707, dated 1937, the title was "Coin Collecting Box Gong Demonstration" unit, later renamed in 1949 to "Demonstration Set No. 7".

The setup emulates a Mechanism No. 14 which was introduced in 1936 for use in Boxes, Coin Collecting No. 14.
 

Extracts from Drawing No. 61707

 

 

 
 
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Last revised: July 27, 2022

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