Vacuum cleaning systems

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...

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...

Different Form of Renovator Necessary to Clean Walls, Ceilings and Similar Flat Surfaces 60 Upholstery Renovators Disastrous to Surfaces Cleaned 64 Attempts to Overcome Destruct...

Use of Drawn Steel Tubing for Stems of Cleaning Tools 70 Drawn Aluminum Tubing for Long Stems 71 Swivel Joints Between Renovator and Stem 72 Wear on Hose Near Stem 74 Methods of...

Early Types Made of Canvas-Wound Rubber Tubing 80 Standard Weight Adopted 80 First Type Produced Especially for Use in Vacuum Cleaning Work 81 First Attempt to Produce Light-Wei...

Hose Inlets 100 Pipe Friction 107 Determination of Proper Size Pipe 107 Determination of Number of Sweepers to be Operated 113 Determination of Number of Risers to be Installed...

Award of Contracts on Evaluation Basis 193 Determination Basis of Evaluation 193 Specification for Class 1, Plant for Residence or Small Office Building of One-Sweeper Capacity...

Power Required 228 Weight of Efficient Portable Cleaners 228 Limit of Power Consumption When Attached to Lighting System 229 Disadvantage of Having Dust Bag at Outlet of Fan 230...

=Early Attempts.=--Whenever machinery has been introduced to assist or replace manual labor, the earlier attempts have been in imitating the tools formerly used by man. As the e...

Before a comparison of the relative merits of any line of appliances, used for any one purpose, can be intelligently made, one must have either some form of that apparatus which...

In undertaking the comparison of a number of different makes of any appliance, in order to determine the good and bad points in each, where the apparatus is composed of a number...

The renovator which is next in importance to the carpet renovator is that used for cleaning bare floors. The earliest form of this renovator was the oscillating floor type intro...

Having discussed the various forms of renovators in detail, the next appliance to be taken up is the connection between the renovator and the cleaning hose, this being the next...

The more important steps in the evolution of the modern vacuum cleaning system can each be attributed to a change in the design or construction of some one of its component part...

As we continue to follow the dust-laden air in its passage toward the vacuum producer we next encounter that portion of the conduit which is permanently and rigidly fixed in pla...

The appliances which remove the dust from the air current which has carried it through the hose and pipe lines, in order to prevent damage to the vacuum producer, play an import...

The next portion of the cleaning system is that which produces the motion of the air through the system and that to which the motive power is applied, namely, the vacuum producer.

When the displacement type of vacuum producer of more than one-sweeper capacity is used with a vacuum cleaning system, some means must be employed to prevent the vacuum rising a...

Vacuum cleaning systems in which appliances for scrubbing are provided in addition to the usual appliances for the removal of the dust and other materials in a dry state have be...

We have considered in detail the various appliances which, taken together, make a complete vacuum cleaning system, but without considering their relation to one another. It now...

these, Type A is superior in all respects except the picking up of large litter, and, unless the character of the material to be removed contains a large amount of material whic...

=Separators.=--The type of separator to be used is dependent on the type of vacuum producer adopted. Where reciprocating exhausters are used, or other type of exhauster where th...

Having decided on the type of vacuum cleaning system that is best suited to the conditions of the particular building in which it is to be installed, it then becomes necessary t...

Before the engineer begins to prepare his specifications for a proposed vacuum cleaning system, he will naturally consider carefully the conditions to be met in the particular i...

While this book is primarily intended to deal only with vacuum cleaning systems, which would limit the work to such apparatus as is permanently installed within the building to...