during the period of four weeks after the day on which the conviction took place, except in so far as it is required as a warrant for the detention of the person convicted under any sentence which has been pronounced against him; nor

where an intimation of intention to appeal or, in the case of an appeal under section 106(1)(b) to (e) F1, 108 or 108Aof this Act, a note of appeal is lodged, until the appeal, if it is proceeded with, is determined.