The Civil engineer and architect's journal, scientific and railway gazette (1839)
London : [William Laxton] · leaf 98
t of this patent relates to a machine for bendingplates or bars of metal by means of three rollers placed vertically,to be driven by steam or other power, and is for the purpose ofsupersediufjf in a ^reat measure the manual labour now employedfor bending or fitting carriage springs. The second part… … Fig. a. Fig. 3. In this machine the process of bending and fitting is performedby suitably shaped blocks, the lower one a, remains stationarywhen the machine is l)eing used, and tlie upper one b, is lifted upto allow tlie bar which has been bent to be removed, and an un-bent bar to be put in its…
Architecture · Civil engineering · Science
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