Pumps and Hydraulics, Part 1 (of 2)
Pumps and Hydraulics, Part 1 (of 2)

Pumps and Hydraulics, Part 1 (of 2)

Pumps and Hydraulics, Part 1 (of 2)Gourd, Cauldron and Pipkin. The very small degree of antiquity to...
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Author: Hawkins, N. (Nehemiah),1833-1928
Format: eBook
Language: English
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Pumps and Hydraulics, Part 1 (of 2)

Pumps and Hydraulics, Part 1 (of 2)

CHF 11.52 CHF 5.75
Pumps and Hydraulics, Part 1 (of 2)

Pumps and Hydraulics, Part 1 (of 2)

CHF 11.52 CHF 5.75
Author: Hawkins, N. (Nehemiah),1833-1928
Format: eBook
Language: English
Description

Pumps and Hydraulics, Part 1 (of 2)

Gourd, Cauldron and Pipkin. The very small degree of antiquity to which machine tools can lay claim appears forcibly in the sparse records of the state of the mechanic arts a century ago. A few tools of a rude kind, such as trip-hammers (worked by water wheels), and a few special ones, which aimed at accuracy but were of limited application, such as mills for boring cannon, or engines for cutting the teeth of clock wheels, were almost their only representatives. The transmission of power was unthought of, except for the very limited distances which were possible with the ill-fitted gudgeons and lanterns and trundles of the old millwrights. The steam-engine, however, changed all this; on the one hand the hitherto unheard of accuracy of fit required by its working parts created a demand for tools of increased power and precision, and on the other it rendered the use of such tools possible in almost any situation. Thus, acting and re-acting on each other, machine tools and steam engines have grown side by side, although the first steps were costly and difficult to a degree which is not now easy to realize. James Watt, for instance, in 1779 was fain to be content with a cylinder for his fire-engine, of which, though it was but 18 inches in the bore, the diameter in one place exceeded that at another by about 38 of an inch; its piston was not unnaturally leaky; though he packed it with paper, cork, putty, pasteboard and old hat. ......Buy Now (To Read More)

Product details

Ebook Number: 56339
Author: Hawkins, N. (Nehemiah)
Release Date: Jan 8, 2018
Format: eBook
Language: English

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