A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . springs for engines and tenders on the North-Western railway, by J. E. MConnell, Esq.,who prefers them to steel, as being easy in action, durable, safe, and easy of repair; theyare used also as buffers and draw-springs, but not to the extent of Fullers and Spencersform. To give an idea of the power of such a spring, we append the result of an experi-ment of one that we witnessed at Messrs. Spencer and Experiments with one of Colemans cylinders with and wit
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . springs for engines and tenders on the North-Western railway, by J. E. MConnell, Esq.,who prefers them to steel, as being easy in action, durable, safe, and easy of repair; theyare used also as buffers and draw-springs, but not to the extent of Fullers and Spencersform. To give an idea of the power of such a spring, we append the result of an experi-ment of one that we witnessed at Messrs. Spencer and Experiments with one of Colemans cylinders with and without the rings. Cylinder6 inches long, 6 inches diameter, 1 inch hole, weight 9 lbs. ?Without the confining rings. With the 2 confining pressure. Inches Length. Inches Length. 0 .... 6 - - - . 6 i - - • - 5Vi8 - - - . 5Vio 1 .... 5 . . 5| H - - - ? - 41 - - - - 5i 2 .... 4i - - - . 5A2i - - - - 3f - - - - 5i The form of these springs is R. Eatons, (sce/y. 144 ; and list, Nos. 28, 29.) This 144. 298 CAOUTCHOUO. spring seems to be peculiarly adapted to use where a powerful spring, acting through asmall space, and taking little roon;, is required, as for use in mining ropes and chains, (secSafety Cage ;) iron ropes, for siiip-rigging, for engine-springs, station buffers, and pow-erful draw-springs. Eatons main idea is the use of lamina? of Indian-rubber, of a maxi-mum thickness of i an inch, with dividing plates, as in Laceys and Fullers, which avoidsthe objections stated above, by supporting the Indian-rubber at smaller intervals; forsprings, where great power is wanted in httle compass, and to act through short dis-tances,—as in engine bearing-springs, lifting springs, and some kinds of draw-springs,—this form proves to be well suited. We give below the result of one such spring of thefollowing dimensions : tlie spring was built up of 2i laminae, -^ of an inch thick, 4^ inchessquare, with a thin iron plate between each, and a hole of one inch diameter for
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
