Demand of a jury by person alleged to be of unsound mind

(1) Where the person alleged to be of unsound mind demands a jury, the court shall in its order for an inquisition direct the return of a jury, unless it is satisfied, by examination of that person, that he is not mentally competent to form and express a wish for an inquisition before a jury. (2) The court may, where it thinks it necessary, and for the purpose of examination, require the person alleged to be of 8 unsound mind to attend it at such convenient time and place as it may appoint.