Publisher's Synopsis
Excerpt from Vacuum Cleaning Systems: A Treatise on the Principles and Practice of Mechanical Cleaning
The contents Of this work are compiled from the Observations Of the author through the seven years during which he has been engaged in the preparation Of specifications for, and the testing Of, complete plants installed in the buildings under the control Of the Treasury Department.
During this time it has become necessary to alter no less than five times the stock form Of specifications for stationary vacuum cleaning plants which were adopted by the Government, with the intent Of Obtaining the widest competition possible with efficient and economical operation, in order to keep pace with the variation and improvement in the apparatus manufactured. As each new type Of system has come on the market a personal investigation at the factory, together with tests, has been made. An exhaustive test of. Carpet renovators was also conducted, using one of the Government plants. In addition the vaco meters recommended for use in capacity tests were carefully calibrated, using the machine at the Department of Agriculture.
The writer wishes to acknowledge the aid received from the various manufacturers in furnishing illustrations and data on their machines, to Messrs. Ewing Ewing and Prof. Sidney A. Reeve for data on tests made by Prof. Reeve and used in de fending the Kenney basic patent.
In analyzing the results Of. His tests and Observations, the writer has endeavored to put his own conclusions into concrete form for the use Of the consulting engineer and (has not entered into the problems to be encountered in the design and manu facture Of the various forms Of apparatus.
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