Transcriber’s Notes
Texts printed in italics and bold face in the source document
have been transcribed between _underscores_ and =equal signs=
respectively. Small capitals have been transcribed as ALL CAPITALS.
More Transcriber’s Notes may be found at the end of this text.
Vacuum Cleaning Systems
A Treatise on the Principles and
Practice of Mechanical Cleaning
BY
M. S. COOLEY, M. E.
MECHANICAL ENGINEER IN OFFICE OF THE SUPERVISING
ARCHITECT, TREASURY DEPARTMENT, WASHINGTON, D. C.
FIRST EDITION
New York:
HEATING AND VENTILATING MAGAZINE COMPANY,
1123 Broadway
Copyright, 1913,
BY
HEATING AND VENTILATING MAGAZINE CO.
CONTENTS.
CHAPTER I.
HISTORY OF MECHANICAL CLEANING.
PAGE
Early Attempts 3
Limitations of the Carpet Sweeper 4
Compressed Air Cleaners 5
Vacuum Produced by Compressed Air 7
Compressed Air Supplemented by Vacuum 7
Piston Pump the First Satisfactory Vacuum Producer 9
Systems Using Vacuum Only 11
Renovator with Inrush Slot 13
Steam Aspirators Used as Vacuum Producers 14
Piston Pump Used Without Separators 15
First Portable Vacuum Cleaner 15
First Use of Stationary Multi-Stage Turbine Blowers 16
Separators Emptying to Sewer by Air Pressure 18
Machines Using Root Blowers as Vacuum Producers 18