The Two Companies respectively shall receive all Barrels in the proper State for Proof, and whether or not theretofore proved, brought to their respective Proof House, or, subject to any Limitation of the Right of User for the Time being in force under this Act, to any Branch Proof House for the Time being provided by them respectively, and shall duly prove such Barrels at such Proof House or Branch Proof House according to the Rules, Regulations, and Scales in force under this Act, and shall duly mark such Barrels when proved (if found of Proof) as duly proved according to such Rules, Regulations, and Scales, and upon Repayment of all Sums actually paid by the Two Companies respectively in respect of the Carriage of such Barrels, and their Delivery at such Proof House or Branch Proof House, and their Re-delivery when proved, and on Payment of the Charges for proving and marking as proved by this Act authorized, shall deliver the Barrels so proved and marked as proved to the Person or Persons entitled to receive the same.