1. To transfer or yleld to, or be-stow upon, another, one of the operatlve words in deeds of conveyance of real property, importing at common law, a warranty or covenant for qulet enjoyment durlng the lifetime of the grantor. Mack v. Patchin, 29 How. Prac. (N. Y.) 23; Young v. Hargrave, 7 ohio, 69, pt 2; Dow v. Lewis, 4 Gray (Mass.) 473