170. Lien of third parties.

170.     Lien of third parties.

When a bailee of goods delivers them to a third party to do work upon them, and the circumstances1 are such as to support the implication that he had the owner's authority to do so, as when he expressly agrees with his bailor to keep the chattel bailed from injury, and this term in the agreement necessarily implies its repair by a third party, or a trade custom in that behalf can be proved, the third party who does the work on the bailee's order has an effective lien on the chattel