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2 THE LOCOMOTIVE. [January, proper arrangement of check-valves, some contending that the individual return connections to each boiler should have separate checks, while others hold that a check in the main return, before the branch connections are taken oft' for the separate boilers, is all that is required ; this difference of opinion being due to a corresponding difference of opinion respecting the best means of maintaining a uniform water level in all the boilers. Both of these arraugements have good points; and, on the other hand, a partisan of either of them can find objections to the other system, or, in fact, to any system not used by himself. Now, while honest discussion and criticism arc proper and legitimate, it might as well be confessed that either arrangement of the checks will be found to work satisfactorily, if the system is otherwise properly designed and proportioned, and properly put together; but the "if " should be given its full emphasis, for with a check in the main return only; and with no equalizing pipe connecting the boilers, there would be great danger of the water backing out from those boilers under which there were good fires, into others having duller fires, or fires that were being cleaned, or that had been freshly coaled. Fig. 1 shows two boilers connected to a common return pipe, rt. Awt. Fig. 2.— Arrangement of Returns with Separate Stop and Check-Valves. and having an equalizing pipe between them. This equalizing pipe should be of about the same size as the main steam connections, and should not have steam drawn from it for any purpose. <strong>The</strong> equalizing pipe should be taken off fmm the boilers at a point as far removed as practicable from the point of exit of the main steam connection, in order that the pressure in it may be influenced as little as possible by the drafts of steam into the main steam pipe. A valve is placed in the equalizing pipe between the two boilers, to be closed only in case one of the boilers is out of use. When both boilers are put into service again, particular care should always be taken to open this valve first. This pre- caution must never be neglected. Fig. 2 shows an arrangement of the returns, in which the branch returns to the individual boilers have each a check-valve and a stop-valve, the returns being so located that the pipes can be effectually drained when they are not in use. This latter feature is often overlooked in putting in heating plants, and consequently, when the system is not in use, water is trapped in the pipes, causing their destruction by pitting. We have had a large experience with heating systems connected in each of the ways shown in the cuts, and with reasonable intelligence and care in the boiler room they have proved equally satisfactory.
1894 THE LOCO MOT! VE. Inspectors' Report. October, 1893. During this month our inspectors made 7,272 inspect ion trips, visited 14, 533 boilers, inspected 5,255 both internally and externally, and subjected 690 to hydrostatic press are. <strong>The</strong> whole number of defects reported reached 9,514, of which 1, 069 were con- sidered dangerous; M boilers were regarded unsafe for further use. Our usual sum- mary is given below Nature of Defects. Cases of deposit of sediment, Cases of incrustation and scale. Cases of internal grooving, - : Cases of internal corrosion, - ----- Cases of external corrosion, - Broken and loose braces and stays, - ----- Settings defective, Furnaces out of shape, - ----- Fractured plates, Burned plates, ----- Blistered plates, Cases of defective riveting, - - - - Defective heads, Serious leakage around tube ends, - Serious leakage at seams, ... ----- - Defective water-gauges, - Defective blow-offs, Cases of deficiency of water, Safety-valves overloaded, - Safety-valves defective in construction, ----- Pressure gauges defective, - Boilers without pressure gauges, Unclassified defects, w hole Numbei
Page 2: PRESENTED BY q re^u \jarri€L'SjNe
Page 9: PUBLISHED BY THE HARTFORD STEAM BOI
Page 13 and 14: 1894.] Til i: LOCOMOTI"V ES. 5 Ky.
Page 15 and 16: 1894.] ill i: LOCO MOT ! \ I. was s
Page 17 and 18: THE LOCOMOTIVE. 9 We should be plea
Page 19 and 20: 1894.] T II i: LOCOM ()TI V E. H th
Page 21 and 22: 1884.] THE LOCOMOTIVE 13 1 in. PROP
Page 23 and 24: 1894 | Til E LOCOMOTH E 1£> Thb Ja
Page 25 and 26: PUBLISHED BY THE HARTFORD STEAM BOI
Page 27 and 28: IS'.il ] Til E MK'OJIiiTI V I. \Q a
Page 29 and 30: 1894 | T II !: LOCO M OT 1 Inspecto
Page 31 and 32: 1894.] THE LOCOMO T I V E Nature of
Page 33 and 34: ls-.M | THE LOCOMOTH E 26 The Explo
Page 35 and 36: 1894 THE LOCO M OT1 V E 27 experime
Page 37 and 38: 1894.J THE LOCOMOTIVE. 29 the grand
Page 39 and 40: lsui ] THE LOCOMOTIVE. 31 [sting ca
Page 41 and 42: PUBLISHED BY THE HARTFORD STEAM BOI
Page 43 and 44: 1894 | THE Nature of Defects. Furna
Page 45 and 46: 1894 | THE LOCOMOTIVE. 37 The whist
Page 47 and 48: THE LOCOMOTIVE. 39 No. 8. Friday, J
Page 49 and 50: 1894] THE LOCOMOTIVE. 41 'I'll is i
Page 51 and 52: 1894.] I'll i: I. MOTIVE. 43 for 18
Page 53 and 54: 1894.] THE LOC QUOTH E 45 ingagood
Page 55 and 56: is.. i THE i LOCOMOTIVE 47 The Coco
Page 57 and 58: Wlxt Jtorototto. PUBLISHED BY THE H
Page 59 and 60: 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
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110 THE LOCOMOTIVE. [July, person l
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112 Incorporated 1866. THE LOCOMOTI
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114 THE LOCOMOTIVE. [A.UGU8T, the s
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1 1 Q THE LOCO M T 1 V F . [August,
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H8 THE LOCOMOTIVE [Augcst, propriet
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120 THE LOCOMOTIVE. [Aigust, ffikt
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122 THE LOCOMOTIVE. [August, eviden
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124 T HE LOCOMOTI V The Explosion o
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•126 THE LOCOMOTIVE. [August, On
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130 THE LOCOMOTIVE. [September, The
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132 THE LOCOMOTIVE. [September, col
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134 Nature of Defects. Cases of int
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436 THE LOCOMOTIVE. [September, one
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138 THE LOCOMOTIVE [September, \ +
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140 THE LOCOMOTIVE. [September, and
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142 THE LOCOMOTIVE [September, will
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146 THE LOCOMOTIVE [October, pipe,
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148 THE LOCOMOTIVE. [October, does
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150 THE LOCOMOTIVE. [October, means
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152 THE LOCOMOTIVE. [October, to sa
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454 THE LOCOMOTIVE. [October, ished
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156 THE LOCOMOTIVE. [October HARTFO
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158 THE LOCOMOTIVE. [October, is 12
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162 THE LOCOMOTIVE. [November, atte
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164 THE LOCOMOTIVE. [November, Natu
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166 THE LOCOMOTIVE. [November, Hild
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168 THE LOCOMOTIVE. [November, caus
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170 THE LOCOMOTIVE. [Novembek, HART
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472 THE LOCOMOTIVE. [November, wate
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174 THE LOCOMOTIVE. [November, to t
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178 THE LOCOMOTIVE. [Decembbb, it m
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: 180 THE LOCOMOTIVE. [December, ha
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^ g2 THE LOCOMOTIVE. [December, Eng
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484 T II E L O C O M O T I V E . [D
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186 THE LOCOMOTIVE. [December, BItt
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188 THE LOCOMOTIVE. [December, The
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190 THE LOCOMOTIVE. [December, sour
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INDEX Explosion, on the Arethuse, 1
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