This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1894 Excerpt: ...for boat propulsion on canals. As generally suggested, this method consists in placing an electric motor directly on the freight-carrying ...Read MoreThis historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1894 Excerpt: ...for boat propulsion on canals. As generally suggested, this method consists in placing an electric motor directly on the freight-carrying boat having at its stern a screw propeller which is revolved by the motor. The motor receives current from suitable contact wires suspended either over the canal waters or on the banks. As the boat has more or less lateral movement, the contact arrangement must be flexible, and as the canal (being fresh water) cannot well be used as a return, a double metallic circuit must be used. This will necessitate two wires for boats going in each direction. With any such system it will be found necessary to use some form of double overrunning trolley carriage as shown in the illustration (Fig. 50), and suitable switches and turnouts must be arranged in the contact wires. The first boat so operated in this country was the "Frank W. Hawley," on the Erie Canal, near Rochester, during the latter part of 1893 (Figs. 51, 51a, 51b, 51c and 51d). She was named after the gentleman whose energy and enterprise led to the making of this noteworthy experiment the first of its kind in America. This boat was an ordinary steam canal boat equipped with what is known as a dish-pan screw. The engine was disconnected from the shaft, and two Westinghouse electric motors of 25 h. p., street railway type, were substituted and directly connected to the screw. The motors received current from a pair of wires suspended over the canal through two ordinary underbearing trolley poles, as shown in the illustration (Fig. 51c). This arrangement was crude and caused a great deal of trouble as the lateral movement of the boat continually caused the trolley wheels to run off the wires. An arrangement of trolley carriage, somewhat similar to that shown in F...Read Less
New. 225 pages. Reprinted from 1894 edition. New 2013 edition in PAPERBACK is SEWN PERFECT BOUND, much more durable than a standard paperback. This is a quality reprint of an old book of historical value. If the original book was printed in multiple volumes than this reprint is of only a single volume. This is an exact/strict reproduction of text, no changes has been made in respect to the original text. A lot of effort has been made to check and improve each page/scan manually for its quality of text and illustrations (if any, are in b/w). Folded illustrations, if any, are not included in the book. This is not a retyped or an ocr'd book. Index, contents, etc, if any in the original book, are included. This item is printed on demand using good quality natural shade paper. The title of the book, on the cover, is in gold lettering.
New. 235 pages. ReInk Books reprint from the 1894 edition. This paperback book is SEWN perfect bound, where the book block is actually sewn (smythe sewn/section sewn) with thread before binding which results in a more durable type of paperback binding. It can also be open wide. The pages will not fall out and will be around for a lot longer than normal paperbacks. NO changes have been made to the original text. Each page is checked manually before printing. Illustrations, Index, if any, are included in b/w. Fold-outs, if any, are not part of the book. If the original book was printed in multiple volumes than this reprint is of only a single volume. This book is printed on demand on acid-free paper. (Original publisher: C.C. Shelley)
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