11

D.—2.

Enclosure 2 in 1 of No. 19. Report on Tensile Tests of Eleven Pieces of Axles received from Messrs. the Beuther's Patent Railway Axle-Box Company. Received, October 13. Tested, October 21st and 22nd. Engineering Laboratory, University College, London, W.C., 22nd October, 1884.

Dimensions. Limit of Elasticity. Breaking Load. Extens on Reduction Dl C. L. Test Number. Marks on Piece. Breadth. Inches. Thickness. Inches. Area. Square Inches Pounds per Square Inch. Tons per Square Inch. Pounds per Square Inch. Tons per Square Inch. Li mit to Break lengths of 3 Inches, per cent. at Fracture, per cent. Remarks. ! 7,571 7,572 J.C. j.c.Ym. J.C. A. S. S. c. s. Staffordshire. •561 inches diameter. Staffordshire. •562 inches diameter. Staffordshire. •561 inches diameter. •247 •248 32,530 33,350 1452 14-89 40,480 48,170 20-75 21-50 •700 •892 10-0 11-1 10'0 Fracture entirely, and very coarsely, crystalline ; surface a good deal distressed. 14-0 Irregular, silky, specked with crystal; surface much distressed. 7,573 •247 37,420 1670 46,010 20-54 •813 5-0 4-6 Entirely, and very coarsely, crystalline. 7,574 D. S. Staffordshire. •562 inches diameter. •248 31,280 13-96 47,400 21-16 ■660 19-0 20-8 Irregular, silky, welding imperfect, about 8 per cent, coarsely crystalline, surface much distressed. 7,575 E. S. F. M. Staffordshire. ■562 inches diameter. Midland. •502 inches diameter. ■248 37,080 16'55 54,820 24-47 •676 18-7 1S-C Coarsely crystalline throughout, surface very much distressed. 7,576 •248 36,840 16-45 54,740 24-44 ■073 233 28-9 75 per cent, coarsely crystalline, the rest silky; surface very much distressed. 7,577 w M Midland. ■561 inches diameter. •247 33,660 1503 56,880 25-39 ■592 11-7 HI 95 per cent, somewhat finely crystalline, surface very little distressed. 7,578 7,579 H. M. I. J. L. K. L. Midland. •561 inches diameter. Lancaster. •561 inches diameter. Lancaster. "561 inches diameter. Lancaster. •560 inches diameter. •247 •247 36,410 37,790 16-25 16-87 54,930 56,710 24-52 25-32 •603 ■667 130 16-3 20-5 30-7 90 per cent coarsely crystalline, surface much distressed. Silky, with a cinder flaw ; surface reedy. 7,580 •247 38,840 1734 51,210 22-87 •758 13-7 30-1 Silky, surface very little distressed. 7,581 ■246 37,760 16'86 53,270 23-78 ■709 18-0 25-0 Silky, specks of crystal, surface a good deal distressed. At.ex. B. W. Kennedy. J. Carruthers. Bs< 9, Great Queen Street, Westminster, S.W.