On a petition for divorce, nullity of marriage, judicial separation or restitution of conjugal rights, the court may make such interim orders as it thinks just for the payment of alimony—
(a)in any case other than a case falling within paragraph (b) of this section, to the wife; and
(b)in the case of a petition for divorce or judicial separation presented by a wife on the ground of her husband's insanity, to the husband.