Rolls-Royce Archives
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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Douglas Snap Terminals and their applications in electrical connections.

Identifier  ExFiles\Box 168b\2\  img263
Date  17th August 1932 guessed
  
DOUGLAS SNAP TERMINALS
ELECTRICAL CONNECTIONS
TERMINALS
Are Fool Proof at the Start-- and improve with Vibration
FIGURE 6
A typical junction block for a multiple of wire connections made by first connecting the spring chambers to a metal strip and then mounted on an insulated base.
FIGURE 7
A comparison of sizes 8 and 60 ampere types. Spring chambers and wire terminals are made of Brass and Cadmium Plated.
FIGURE 8
SECTION A-A MAGNIFIED
The terminal sleeve is swedged firmly to solid or stranded wire by a machine leased to the users of Douglas Snap Terminals. Note the solid mass of wire in the magnified cross section.
FIGURE 9
A method commonly used to make a contact behind a panel board. The illustration at the right is a spring chamber mounted side-wise used in places where insufficient space would not permit a vertical mounting.
  
  


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