PRACTICAL STEAM AND HOT AND VENTILATION A MODERN PRACTICAL WORK ON STEAM AND CONTAINING OVER THREE HUNDRED SPECIALLY MADE ILLUSTRATIONS GENERAL кь COPYRIGHTED, 1908, BY THE NORMAN W. HENLEY PUBLISHING COMPANY COMPOSITION, ELECTROTYPING, AND PRESS- FROM a more or less experimental stage to one of an exact science has been the progress of the art of artificial heating and ventilation during the period covering the past twenty-five or thirty years. In the early days of this industry there were but few competent fitters located outside of the larger cities. However, of later years the above conditions have changed, due in a great measure to the constant advancement and education of the steam fitting trade. To-day it is not an uncommon thing to find in a small city or town one or more steam fitters entirely competent to install almost any kind of a steam or hot-water heating appa ratus. This education of the steam fitter has been accomplished largely by the frequent publication in the trade papers of much practical information, accompanied by drawings and data which could be readily understood by him. The publication of a number of books on the subject of Steam and Hot-Water Heating and Ventilation has also been of great assistance to the steam fitter in his mental advancement. However, much of the matter contained in these books is too technical and of a nature too difficult to be clearly understood by a man of average education. In presenting this work the author wishes to give a brief history of the science of steam and hot-water heating and ventilation and the early methods of constructing work, and to describe and illustrate the advancement and improvements over the earlier methods. By the illustrations, rules and explanations given, we shall aim to make plain to the steam fitter or apprentice the best methods of 179710 estimating and installing heating work by any one of the modern methods or systems now in use. To keep pace with the means and methods employed we must be continually studying and actively interesting ourselves in the improvements as they are brought out. The methods of a score of years ago have given place to other and improved methods and further experimenting and study by the wide-awake American mechanics are bound to result in still further progress. To those authors and authorities from whose works we have quoted and to the manufacturers of heating appliances who have so kindly assisted us, we extend our thanks. Our effort is not to criticise but rather to comment upon the various heating and ventilating systems in vogue at the present time and to instruct the steam fitter in a practical way regarding their application and installation. We have also added such tables, rules and general information as will make this valuable as a reference book for the contracting steam fitter. FEBRUARY, 1908. A. G. KING. |