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A Collection Of Scotch Proverbs

RRP $13.99

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Pappity Stampoy wrote this popular book that continues to be widely read today despite its age.


A Gold Hunter's Experience (masterpiece Collection)

RRP $18.99

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Early in the summer of 1860 I had a bad attack of gold fever. In Chicago the conditions for such a malady were all favorable. Since the panic of 1857 there had been three years of general depression, money was scarce, there was little activity in business, the outlook was discouraging, and I, like hundreds of others, felt blue. Gold had been discovered in the fall of 1858 in the vicinity of Pike's Peak, by a party of Georgian prospectors, and for several years afterward the whole gold region for seventy miles to the north was called "Pike's Peak." Others in the East heard of the gold discoveries and went West the next spring; so that during the summer of 1859 a great deal of prospecting was done in the mountains as far north as Denver and Boulder Creek. Those who returned in the autumn of that year, having perhaps claims and mines to sell, told large stories of their rich finds, which grew larger as they were repeated, amplified and circulated by those who dealt in mining outfits and mills. Then these accounts were fed out to the public daily in an appetizing way by the newspapers. The result was that by the next spring the epidemic became as prevalent in Chicago as cholera was a few years later. Four of the fever stricken ones, Enos Ayres, T. R. Stubbs, John Sollitt and myself, formed a partnership, raised about $9,000 and went to work to purchase the necessary outfit for gold mining. Mr. Ayres furnished a larger share of the capital than any of the others and was not to go with the expedition, but might join us the following year. Mr. Stubbs and I were both to go, while Mr. Sollitt was to be represented by a substitute, a relative whose name was also John Sollitt, and who had been a farmer and butcher and was supposed to know all about oxen. Mr. Stubbs was a good mechanic, an intelligent, well-read man, and ten years before had been to California in search of gold. Our outfit consisted of a 12-stamp quartz mill with engine and boiler, and all the equipments understood to be necessary for extracting gold from the rock, including mining tools, powder, quicksilver, copper plate and chemicals; also a supply of provisions for a year. The staple articles of the latter were flour, beans, salt pork, coffee and sugar. Then we had rice, cornmeal, dried fruit, tea, bacon and a barrel of syrup; besides a good supply of hardtack, crackers and cheese for use while crossing the plains, when a fire for cooking might not be found practicable. These things were all purchased in Chicago, together with the fourteen wagons necessary to carry them across the plains. Then all were shipped by rail to St. Joseph, Mo., where the oxen were to be purchased. The entire outfit when loaded on the cars, weighed twenty-four tons. I stayed in Chicago till the last to help purchase and forward the outfit and supplies, while Stubbs and Sollitt (the substitute) went to St. Joe to receive and load them on the wagons and to purchase the oxen.


Process Control For Sheet-metal Stamping

RRP $293.99

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Process Control for Sheet-Metal Stamping is a comprehensive and structured approach to the design and implementation of controllers for the sheet metal stamping process. The use of process control for sheet-metal stamping greatly reduces defects in deep-drawn parts and can also yield large material savings from reduced scrap. Sheet-metal forming is a complex process and most often characterized by partial differential equations that are numerically solved using finite-element techniques. In this book, twenty years of academic research are reviewed and the resulting technology transitioned to the industrial environment. The sheet-metal stamping process is modeled in a manner suitable for multiple-input multiple-output control system design, with commercially available sensors and actuators. These models are then used to design adaptive controllers and real-time controller implementation is discussed. Finally, experimental results from actual shopfloor deployment are presented along with ideas for further improvement of the technology. Process Control for Sheet-Metal Stamping allows the reader to design and implement process controllers in a typical manufacturing environment by retrofitting standard hydraulic or mechanical stamping presses and as such will be of interest to practising control engineers working in metal-working, automotive and aeronautical industries. Academic researchers studying improvements in process control and how these affect the industries in which they are applied will also find the text of value.


Recollections

RRP $13.99

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David Christie Murray was an English journalist and writer.



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