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160 Incorporated 1866. THE LOCOMOTIVE. Charter Per- petual. Issues Policies of Insurance after a Careful Inspection of the Boilers, COVERING ALL LOSS OR DAJIAliE TO BOILERS, BUILDINGS, AND MACHINERY ALSO COVERING LOSS OF LIFE AND ACCIDENT TO PERSONS ARISING PROM Steam Boiler Explosions. Full information concerning the plan of the Company's operations can be obtained at the OOZMUF^^UKT-S-'S OIFIF'ICIE], HABTPOED, COK"IT. Or at an} - Agency. J. M. ALLEN, President. W. B. FRANKLIN, Vice-Prest. J. B. PIERCE, Secretary. FRANCIS B. ALLEN, 2d Vice-Prest. E. J. MURPHY, M. E., Consulting Engineer. IJoard of J. M. ALLEN, President. FRANK W. CHENEY, Treas. Cheney Brothers Silk Manufacturing 1 !i 1. CHARLES M. BEACH, of Beach & Co. DANIEL PHILLIPS, of Adams Express Co. RICHARD W. H. JARVIS, Prest. Colt's Fire Anns Manufacturing Co. LEVERETT BRAINARD, of The Case, Lockwood & Brainard Co. Gen. WM. B. FRANKLIN, late U. S. Commissioner to the Paris Exposition. NELSON HOLLISTER, of State Bank. Hartford. GENERAL AGENTS. THEO. H. BABCOCK. CORBIN & GOODRICH, LAWORD i McKIM, C. E. ROBERTS, H. M. LEMON, C. C. GARDINER, L. B. PERKINS. \V. G. LINEBURGH & SON, BURWELL & BRIGGS, MANN & WILSON. ZOLLARS & McGREW. LOUIS V. CLARK & CO., W. S. HASTIE & SON, PETER F. PESCUD, CHIEF INSPECTORS. R. K. McMURRAY, WM. J. FARRAN, R. E. MUNRO, F. S. ALLEN. WM. HEAFORD, A. B. ECOFF, F. S. ALLEN, J. H. RANDALL, C. A. BURWELL, J. B. WARNER, T. E. SHEARS, -B. F. JOHNSON, Directors. Hon-. HENRY C. ROBINSON. Attorney-at-Law, Hartford. Conn. Hon. FRANCIS B. C< IOLEY, of the National Exchange Bank. Hartford, Conn. EDMUND A. STEDMAX. Treasurer of the Fidelity Co., of Hartford, Conn. GEORGE BURNHAM, Baldwin Locomotive Works, Philadelphia. Hon. NATHANIEL SHIPMAN, Judge United Stales ( limit Court. C. C. KIMBALL, Pres. Smyth Mfg. Co., Hartford. Conn. PHILIP CURBIN, of P. & F. Corbin, New Britain, Conn. New York City. Philadelphia, Pa. Baltimore, Md. j Boston, Mass. "/ Providence, R. I. Chicago, D_l. St. Louis, Mo. Hartford, Conn. Bridgeport, Conn. Cleveland. Ohio. San Francisco, Cal. Denver, Col. ( Birmingham, Ala. c Charleston. S. C. ( New Orleans, La. OFFICES. Office, 285 Broadway. 432 Walnut St. " Chamber Commerce. 12.5 Milk St. 29 Weybosset St. 112 Quincv St. 31!) North Fourth St. 218 Main Street. 2 Sanford Building. " 208 Superior St. " 306 Sansome St. " Mining Ex. Bl'g. 110 North 19th St. 44 Broad St. 188 Gi-avier St.
She Mmmtttivt PUBLISHED BY THE HARTFORD STEAM BOILER INSPECTION AND INSURANCE COMPANY. New Semes Vol. XV. BARTFORD, CONN., NOVEMBER, 1894. No. It Concerning" Cast-iron Flanges. The large mouth-pieces of rendering tanks and upright bleachers are usually made of cast-iron, and arc provided with flanges through which pass the bolts that hold the covering plate in position. It is to these flanges that we wish to call attention in the present article. Consider, tor example, the mouth-piece illustrated in Fig. 1. The internal diameter of the east inn', in this case, was thirty inches, and a steam pressure of 100 pounds to the Bquare inch was carried, making the total load on the cover-plate some 71,000 pounds. This Load was transmitted to the flange of the casting by bolts, two of which are shown in the Illustration. There was a sufficient number of bolts to withstand the load safely, and the main body of the casting was also stout enough to be safe. We desire to call Fig. 1. — A Cast-Iron Flange without Brackets. attention, however, to the fact that since the cover-bolts are not in line with the body of the casting, the strain in the flange is neither a simple shear nor a simple pull. In fact, the flange is in the condition of a beam loaded at one end and fixed at the other; and therefore the horizontal strain at the root of the flange will be a tension, and its magni- tude can be easily computed by means of the usual rules for beams. But the strain at the root of the flange is not due to the steam pressure alone, for in turning up the nuts on the bolts so as to secure a tight joint we shall produce a very material addition to the strain on the flange, which we shall have to take into account. By making certain reasonable assumptions concerning the strain on the bolts due to screwing up the nuts, we find that in the case under consideration the tensile strain on the main casting at the root of the flange was about 4,100 pounds. We cannot safely rate the tensile strength of cast-iron higher than 15,000 pounds, and hence the factor of safety in the present instance is only about 3§, whereas it ought to be about 10. The packing being all within the line of bolts, it is easy to see that if a slight leakage should occur, and the
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PRESENTED BY q re^u \jarri€L'SjNe
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PUBLISHED BY THE HARTFORD STEAM BOI
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1894 THE LOCO MOT! VE. Inspectors'
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1894.] Til i: LOCOMOTI"V ES. 5 Ky.
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1894.] ill i: LOCO MOT ! \ I. was s
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THE LOCOMOTIVE. 9 We should be plea
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1894.] T II i: LOCOM ()TI V E. H th
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1884.] THE LOCOMOTIVE 13 1 in. PROP
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1894 | Til E LOCOMOTH E 1£> Thb Ja
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IS'.il ] Til E MK'OJIiiTI V I. \Q a
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1894 | T II !: LOCO M OT 1 Inspecto
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1894.] THE LOCOMO T I V E Nature of
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ls-.M | THE LOCOMOTH E 26 The Explo
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1894 THE LOCO M OT1 V E 27 experime
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1894.J THE LOCOMOTIVE. 29 the grand
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lsui ] THE LOCOMOTIVE. 31 [sting ca
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1894 | THE Nature of Defects. Furna
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1894 | THE LOCOMOTIVE. 37 The whist
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THE LOCOMOTIVE. 39 No. 8. Friday, J
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1894] THE LOCOMOTIVE. 41 'I'll is i
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1894.] I'll i: I. MOTIVE. 43 for 18
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1894.] THE LOC QUOTH E 45 ingagood
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is.. i THE i LOCOMOTIVE 47 The Coco
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Wlxt Jtorototto. PUBLISHED BY THE H
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1894 ; THE Nature of l>> Furnaces o
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Til B LOCOMOTIVE 53 mnd scalded, an
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1894.] THE LOCOMOTIVE 55 way. Erect
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1894.] Til i: LOCOMOTIV B. 57 The J
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1884.] THE Loco M OTIVE 59 also giv
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62 THE LOCOMOTIVE. [April, 1881, th
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64 Incorporated 1866. THE LOCOMOTIV
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66 THE L O C M ( > T I V E . [May,
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68 THE LOCOMOTIVE. [Mat, ning, and
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70 T II E L O C M ( ) T I V E . [Ma
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72 THE LOCOMOTIVE. [May, (67.) —
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74 THE LOCO M T I V E tfSI It 1$ 1
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76 THE LOCOMOTIVE [Mat, No. of Voya
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78 THE LOCOMOTIVE. [May, laugh. Two
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39 THE LOCOMOTIVE. [.Jine, pounds^
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84 THE LOCOMOTIVE [June, |", the ho
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86 THE LOCOMOTIVE. [June, Nature of
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g3 THE LOCOMOTIVE. [Jink, testing i
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90 THE LOCO M T 1 V E [June, $ t $
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— 92 THE LOCOMOTIVE [June, and th
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94 THE LOCOMOTIVE [Juke however, to
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98 THE LOCOMOTIVE [July, minutes be
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100 THE LOCOMOTIVE. [July, rear hal
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102 THE LOCOMOTIVE. [July, shattere
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1(34 THE LOCOMOTIVE. [July, HARTFOR
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1C6 THE LOCOMOTIVE. [July, connecte
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108 THE LOCOMOTIVE. [July, Concerni
Page 118 and 119: 110 THE LOCOMOTIVE. [July, person l
Page 120 and 121: 112 Incorporated 1866. THE LOCOMOTI
Page 122 and 123: 114 THE LOCOMOTIVE. [A.UGU8T, the s
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Page 126 and 127: H8 THE LOCOMOTIVE [Augcst, propriet
Page 128 and 129: 120 THE LOCOMOTIVE. [Aigust, ffikt
Page 130 and 131: 122 THE LOCOMOTIVE. [August, eviden
Page 132 and 133: 124 T HE LOCOMOTI V The Explosion o
Page 134 and 135: •126 THE LOCOMOTIVE. [August, On
Page 138 and 139: 130 THE LOCOMOTIVE. [September, The
Page 140 and 141: 132 THE LOCOMOTIVE. [September, col
Page 142 and 143: 134 Nature of Defects. Cases of int
Page 144 and 145: 436 THE LOCOMOTIVE. [September, one
Page 146 and 147: 138 THE LOCOMOTIVE [September, \ +
Page 148 and 149: 140 THE LOCOMOTIVE. [September, and
Page 150 and 151: 142 THE LOCOMOTIVE [September, will
Page 154 and 155: 146 THE LOCOMOTIVE [October, pipe,
Page 156 and 157: 148 THE LOCOMOTIVE. [October, does
Page 158 and 159: 150 THE LOCOMOTIVE. [October, means
Page 160 and 161: 152 THE LOCOMOTIVE. [October, to sa
Page 162 and 163: 454 THE LOCOMOTIVE. [October, ished
Page 164 and 165: 156 THE LOCOMOTIVE. [October HARTFO
Page 166 and 167: 158 THE LOCOMOTIVE. [October, is 12
Page 170 and 171: 162 THE LOCOMOTIVE. [November, atte
Page 172 and 173: 164 THE LOCOMOTIVE. [November, Natu
Page 174 and 175: 166 THE LOCOMOTIVE. [November, Hild
Page 176 and 177: 168 THE LOCOMOTIVE. [November, caus
Page 178 and 179: 170 THE LOCOMOTIVE. [Novembek, HART
Page 180 and 181: 472 THE LOCOMOTIVE. [November, wate
Page 182 and 183: 174 THE LOCOMOTIVE. [November, to t
Page 186 and 187: 178 THE LOCOMOTIVE. [Decembbb, it m
Page 188 and 189: : 180 THE LOCOMOTIVE. [December, ha
Page 190 and 191: ^ g2 THE LOCOMOTIVE. [December, Eng
Page 192 and 193: 484 T II E L O C O M O T I V E . [D
Page 194 and 195: 186 THE LOCOMOTIVE. [December, BItt
Page 196 and 197: 188 THE LOCOMOTIVE. [December, The
Page 198 and 199: 190 THE LOCOMOTIVE. [December, sour
Page 202 and 203: INDEX Explosion, on the Arethuse, 1
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