Section 193. Dower in lands mortgaged for purchase-money

Where a husband
  purchases lands during the marriage, and at the same time mortgages  his
  estate  in  those lands to secure the payment of the purchase-money, his
  widow is not entitled to dower of those lands, as against the  mortgagee
  or those claiming under him, although she did not unite in the mortgage.
  She is entitled to her dower as against every other person.