A person who for value negotiates or transfers a receipt by endorsement or delivery including one who assigns for value a claim secured by a receipt unless a contrary intention appears, warrant: (a) That the receipt is genuine; (b) that he has a legal right to negotiate or transfer it; (c) that he has knowledge of no fact which would impair the validity or worth of the receipt, and (d) that he has a right to transfer the title to the grain, and that the grain is merchantable or fit for a particular purpose whenever such warranties would have been implied if the contract of the parties had been to transfer the grain without receipts represented thereby.