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 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 ...
Read More
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 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
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
PLEASE NOTE, WE DO NOT SHIP TO DENMARK. New Book. Shipped from UK in 4 to 14 days. Established seller since 2000. Please note we cannot offer an expedited shipping service from the UK.
Choose your shipping method in Checkout. Costs may vary based on destination.
Seller's Description:
Fine. No Jacket. Book. 5 3/4 By 8 3/4" Beautiful navy colored cloth hard cover with magnificent copper/gold embossed designs on both covers and spine, 2002, 2nd Edition, 233 pages, some fold out illustrations, Elliott Bay Classics by Boat House Publishers.
