CHAPTER III.

THE CARPET RENOVATOR.

Four Important Parts of Vacuum Cleaning System 25 The Straight Vacuum Tool 26 Renovator with Auxiliary Slot Open to Atmosphere 27 Renovator with Two Cleaning Slots 30 Renovator with Inrush Slots on Each Side 30 Tests on Dirty Carpets 30 Type A Renovator Most Efficient on Dirty Carpets 36 Tests of Carpets “Artificially” Soiled 36 Effort Necessary to Operate Various Type of Renovators 51 Relative Damage to Carpets with Various Type of Renovators 52