Zwicker's Revised Practical Instructor IN QUESTIONS AND ANSWERS for Machinists, Firemen, Electricians and Steam Engineers

| November/December 1995


This book is written for the special information of Engineers, Machinists, Firemen and Electricians who have to sooner or later procure an engineers license by going before a board of practical engineers and answering questions relating to the care of boilers, pumps, injectors, engines, indicator safety-valve and electric light dynamo before they can collect their salary as an engineer. It is hoped its practical suggestions will enable those who follow them to gain a better insight of the work they have to perform. The real object in writing this book is to help my fellow man and not keep him in the dark. All questions are answered in plain and simple language, so any man of limited education can thoroughly understand.

Q. What are the duties of an Engineer?
A. His duties are to take full charge of the boilers and engines where ever he may be employed, and see that the steam machinery under his charge are kept in No. 1 order with little expense to his employer.

Q. What is required of a man to become a first class Engineer?
A. His is obliged to obtain an Engineers license touching his qualifications as an engineer of steam engines, by which will be shown that he is a suitable and safe person to be entrusted with the powers and duties of an engineer.

Q. What experiences must a man have in order to get his application before a board of Engineers?
A. His experience must be generally two years, at mechanical or steam engineering, which must be sworn to by two citizens, one being a licensed engineer and the other a good reliable citizen, both living in the city, where applicant has worked.

Q. What is a steam boiler, how is it, and of what is it made?
A. A steam boiler is a closed vessel made of steel, iron or copper plates, the most in use is 3/8, ? and 6/16 inch thick, and ranging from 45,000 to 85,000 lbs. tensile strength; these plates are run through a rolling machine and rolled in a circle, then riveted together, generally with two rows of rivets, because the strain is greater sidewise than endwise, the seams around the boiler are single riveted because the strain is not so great; the boiler is braced by different kinds of braces, such as a crow foot, Longitudinal dome, side braces, etc. The eye is riveted to the head of the boiler, which head is generally made of 5/8 inch plate, the other eye is riveted to the side top or dome of boiler, and the brace and eye are put together by bolts with a split key to keep the bolt in its place.


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