File:Appletons' cyclopaedia of applied mechanics- a dictionary of mechanical engineering and the mechanical arts (1880) (14593267050).jpg

Identifier: appletonscyclopa02dapp (find matches)
Title: Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts
Year: 1880 (1880s)
Authors: D. Appleton and Company Benjamin, Park, 1849-1922
Subjects: Mechanical engineering -- Dictionaries
Publisher: New York, D. Appleton
Contributing Library: Mugar Memorial Library, Boston University
Digitizing Sponsor: Boston University

View Book Page: Book Viewer
About This Book: Catalog Entry
View All Images: All Images From Book
Click here to view book online to see this illustration in context in a browseable online version of this book.

Text Appearing Before Image:
around the anvil-block to support thehammer itself, and the space between the masonry and the anvil-block being packed with oak timber.It follows from the mode of construction adopted that in the event of anything going wrong withthese foundations, it would be quite possible to lift the anvil-block piece by piece, and to make thedamage good ; whereas, if the block had been cast in one piece, any settlement, if it did take place,would be very difficult to deal with. The weights of the various parts of the hammer are as follows: D Tons. Tup with piston and rod 80 Cylinder 22 Entablature 30 Legs of hammer-frame with guides 250 Wrought-iron cross-stays 25 Foundation-plate 90 Valves, valve-gear, and miscellaneous 35 Total weight of structure above ground 532 Anvil and anvil-block 750 Total 1,282 To serve this magnificent hammer, four cranes have been erected, three of them being capable oflifting 100 tons each, while the fourth can deal with a load of 160 tons. They are all of the revolv-
Text Appearing After Image:
HANGER. 97 ing post class, with jibs formed of curved box-girders, the part of each crane below the ground linebeing also a box-girder of rectangular section tapering from the ground level to the bottom. Theweight of each crane with its load is carried by a ring of live rollers at the ground level, the bottomof the crane-post having a gudgeon taking lateral stress only. The foundation-plates of the cranesare connected to the foundation-plate of the hammer as well as to the masonry, and the whole workhas been carried out so as to make a thoroughly sound job. Each crane has a maximum radius of30 feet 8 inches, the chain carrying the ingots passing over pulleys on a traveling carriage, whichcan be racked in and out on rails on the top of the jib. The height from the floor level to the topof these rails is 29 feet 6 inches, while from the floor level to the bottom pivot is 27 feet 6 inches.The total weight of each 100-ton crane is 110 tons, while the 160-ton crane weighs 140 tons. Eachcra

Note About Images