for converting existing legal estates, interests and charges not capable under the said Act of taking effect as legal interests into equitable interests;
for discharging, getting in or vesting outstanding legal estates;
for making provision with respect to legal estates vested in infants;
for subjecting land held in undivided shares to trusts;
for dealing with party structures and open spaces held in common;
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
for converting existing freehold mortgages into mortgages by demise;
for converting existing leasehold mortgages into mortgages by sub-demise.