has gone before, in addition to the improvements that make this the accepted air-brake standard for all locomotives of the future. It is therefore of the greatest importance that locomotive engineers in particular, but all those as well who have anything to do with the maintenance of locomotive equipment, or the supervision of enginemen or air-brake repair men, shall become well informed concerning the improved E-T locomotive-brake equipment. Constant attendance at an air-brake instruction car, until the new type of brake can be perfectly understood, is a privilege not within the reach of the many who desire the knowledge; and for those who may receive such direct instruction, good literature on the subject is as helpful as the text-book is to the college student. With the object in view of aiding all those who desire to become proficiently acquainted with the E-T locomotive-brake equipment, this book has been written. Its production was delayed until the equipment had reached practical perfection in the No. 6, its latest, improved style, upon which the text and illustrations are mainly based, although the preceding, No. 5, style of the equipment is fully described, in so far as it differs from the perfected type. While the main portion of this book is designed for the assistance of those who will not be satisfied with anything short of a complete and thorough understanding of the whole E-T locomotive-brake equipment, a series of Questions and Answers has been appended for the benefit of those who wish to become posted in Preface the material details, only, of this equipment, in order to qualify for an examination thereon; and this section is so complete in itself, that it is recommended to Travelling Engineers and Air-Brake Inspectors and Instructors as a standard form of Examination Questions on the No. 5 and No. 6 E-T equipments. The illustrations are wholly original, the scheme of giving each zone of air pressure its distinctive color causing the plates to appear self-explanatory to a great extent. The text is also original, except that the descriptive language used by the air-brake company in its literature is occasionally employed in reference to certain parts of the apparatus, as examples of brevity that can not be improved upon. This book is, as the name implies, a text-book and reference work on the E-T Locomotive Brake Equipment; therefore, the accessories that are the same as used in connection with the common, automatic engine-and-tender brake, such as air-pump, train air-signalling equipment and foundation brakegear, are not included. On pages 237 to 252 of the present edition there will be found illustrated descriptions of the latest improvements or modifications of the E-T Equipment, with instructions for such changes in methods of operation as may be necessary in their use. THE AUTHOR. March, 1920. ARRANGEMENT OF APPARATUS, PIPE CONNECTIONS, ETC., AND THE QUICK-ACTION DISTRIBUTING VALVE, 22 24 32 45 49 HANDLE POSITIONS OF THE ENGINEER'S BRAKE-VALVES, No. GENERAL OPERATION OF THE No. 5 E-T EQUIPMENT, AS IT MAY DIFFER FROM THE IMPROVED, No. 6 STYLE, EXAMINATION QUESTIONS AND ANSWERS ON THE E-T THE WESTINGHOUSE No. 6 E-T Locomotive Brake Equipment The improved, Westinghouse, locomotive air-brake equipment (the term locomotive brake meaning the combined braking apparatus of the engine and tender, which in this system works as a unit), is denominated by the symbols E-T (engine-tender), and the perfected equipment is designated as the No. 6. The No. 5 style of this brake was brought out in 1905, and has been quite generally applied to locomotives built since that date until succeeded by the more perfect design. While the No. 6 does not differ greatly from the preceding style, the points of difference are important enough to warrant the adoption of the latest construction for all locomotives that will be built in the future, and this, the No. 6 E-T equipment, has been selected as the subject of this book of instruction; after it has been fully described, and illustrated, all necessary reference will then be made to the differences embodied in the No. 5, or older, style. |