wheel lock

noun
1.
an old type of gunlock in which sparks are produced by the friction of a small steel wheel against a piece of iron pyrites.
2.
a gun having such a gunlock.

Origin:
1660–70

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
wheel lock
 
n
1.  a gunlock formerly in use in which the firing mechanism was activated by sparks produced by friction between a small steel wheel and a flint
2.  a gun having such a lock

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Example sentences
The steering wheel lock also acts as a good visual deterrent.
Your wheel lock needs to be checked to be sure that it engages and releases
  properly and does not rub against the tire.
If you drop a trailer, use a fifth wheel lock whenever possible.
Due to the accident potential, systems may want to consider replacing the wheel
  lock securement.
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