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Scientific American, Vol. 11, No. 7 (1864) (1864)

leaf 7

An illustration from Scientific American, Vol. 11, No. 7 (1864), 1864, leaf 7
g materials well to make a charcoal fire to heat it in, and then let the and B thevalve stem. Cis a cup which slides over put together, and should last a life-time. The top is . steel and the fire yet cold together before it is taken the shaft, when the pin, F, is in the slot, D. If it is made… … the best fiton its seat. value of’ a gvod tuol, be- There is no stop of valve, cause the steel they work consequently no slack motion, which wears an en- fon has never been properly annealed, and before together in the middle and steamed and compressed | the tool has half done its duty it is worn…

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