{ "item_title" : "Locking", "item_author" : [" Frederick Charles Lavarack "], "item_description" : "Locking: Being An Elementary Treatise On The Mechanisms In Interlocking Lever Machines By Which The Movements Of The Levers Are Restricted To Certain Predetermined Ways is a book written by Frederick Charles Lavarack in 1907. The book is a detailed guide to the mechanisms used in interlocking lever machines, which restrict the movements of levers to specific predetermined ways. The author provides an in-depth analysis of the different types of locking mechanisms, their functions, and how they are implemented in various machines. The book is intended for engineers, mechanics, and anyone interested in the workings of interlocking lever machines. It is written in a clear and concise style, with numerous illustrations and diagrams to aid in understanding. This book is a valuable resource for anyone looking to gain a deeper understanding of the mechanisms used in interlocking lever machines.Rendering It Impossible To Operate Conflicting Switches And Signals On Railways.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.", "item_img_path" : "https://covers3.booksamillion.com/covers/bam/1/16/485/267/1164852671_b.jpg", "price_data" : { "retail_price" : "23.95", "online_price" : "23.95", "our_price" : "23.95", "club_price" : "23.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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