A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . springs have been extensively used as buffer, bearing, and draw springs for railway usesalone and in combination with Be Bergues improvements: some defects have been foundin practice in this form, to obviate which, the ingenuity of later inventors has been ex-ercised ; the defects alluded to are, the tendency to swell out at the central unsupportedpart of the ring, thus from the undue tension rendering it liable to break under suddenconcussion, and occasioning c
A supplement to Ures Dictionary of Arts, Manufactures, and Mines, : containing a clear exposition of their principles and practice. . springs have been extensively used as buffer, bearing, and draw springs for railway usesalone and in combination with Be Bergues improvements: some defects have been foundin practice in this form, to obviate which, the ingenuity of later inventors has been ex-ercised ; the defects alluded to are, the tendency to swell out at the central unsupportedpart of the ring, thus from the undue tension rendering it liable to break under suddenconcussion, and occasioning complete disintegration of the material where not obviate these defects, George Spencer (see Hst, Nos. 12,18) proposed to mould thecaoutchouc at once in the form it assumes under pressure, and then to place a confiningring of iron on the larger diameter. (See Jig. 142.) By this ingenious plan, the caout- 142 a -- — ^. chouc loses its power of stretching laterally, being held by the ring b, secured in a groovemoulded in the cone to receive it; when the pressure is applied to the ends, the rubberis squeezed into the cup-like spaces c, and thus the action of the spring is limited. Bythis plan, rubber of a cheaper and denser kind can be used than on the old cylindricalplan, and the patentee states that many thousands of carriages and trucks are fitted withthese springs which give entire satisfaction; among which, are those on the Brighton,South-Western, North London, South Wales, Vale of Xeath, Bristol and Exeter, TaffYale, Lancashire and Yorkshire, St. Helens, Bombay and Baroda, Thciss Railways, andmany others. These cones are used as buffer, bearing, and draw springs for railway car-riages, and are made in several sizes to suit various uses. To show the power that such CAOUTCHOUC. 297 springs are equal to, we append tlie result of an experiment on a No. 1 cone, (for insidebuffers,) 3 inches iu length
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Keywords: ., bookcentury1800, bookdecade1860, bookpublishernewyo, bookyear1864
