Coat of arms of Hassal

The blazon

per chev, ar. and or, three pheons sa. — Crest, an arm, embowed, couped at the elbow, vested or, turned down at the wrist ar. holding a dart, with the point downwards, or, feathered ar. barbed sa.

A blazon is the description of a coat of arms in the technical language of heraldry. The drawing comes from that text, and from nothing else.