Any cause pending before the municipal judges may, whenever such municipal judge is unable to act in said cause at the time the matters come before him, be transferred upon his order, or in case of his absence, by the clerk to the other municipal judge and a note of such transfer shall be entered upon the docket of the case. When the municipal judges shall have acted in any one case or proceeding, the docket shall be signed in the manner and within the time provided by law by the municipal judge who shall have given the final judgment.