How did Mr. Trotman's patented design differ from Mr. Hall's hinged anchor?

Answer

Trotman incorporated a short stock on the crown itself

Mr. Trotman's design also featured hinged flukes but added a short stock specifically on the crown to help the flukes dig in more aggressively than Hall's design.

How did Mr. Trotman's patented design differ from Mr. Hall's hinged anchor?
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