The general rule is, that if a subsequent purchaser acquires a title to a lot in a restricted area of this character, either by conveyance from the original grantee or by mesne conveyance from him, without notice, either actual or constructive, of the general plan of the buildings or occupation which imposes a building line restriction, the restriction cannot be enforced against him. In Reis v. Bixhorn, 271 Ill. App. 279, the court reversed an injunction issued to restrain violation of a restriction contained in an unrecorded deed. In remanding with instructions to dismiss for want of equity, the court said at page 282: