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66 THE L O C M ( > T I V E . [May, of the barrel, sometimes leaked. It was thought, by the engineer in charge, that this might be due to distress from the weight of the boiler and contents, and to relieve this distress he put another cast-iron chair under the middle of the barrel, near the trouble- some girth joint. It was thought that this chair would sustain its share of the boiler's weight, and that the trouble would disappear. Such was not the case. The boiler behaved as badly as ever ; and it was observed that when the joint leaked, the boiler was elevated at the middle of its length— "hogged up," as the saying is, —so that it did not rest on the middle saddle. At this point we were called upon to diagnose the case and suggest a course of treatment. The results of the diagnosis, and the success attending the application of the remedy we proposed, are given below, in the present article. Having had a considerable experience with cases of this kind, we were at once led to Pig. 2.— First Form of the Recording Apparatus. suspect that the feed-pipe might be the offending member. The feed water entered the boiler near the bottom of the water-leg on the righthand side, as indicated by the arrow in Fi
189-4 | THE LOCO M mi V E. 67 the circulation currents, and we should expect to find the Leakage much mailer in amount than before, or perhaps uol noticeable at all. To teal this theorj (which our general experience had Long indicated to be correct), we devised the apparatus shown in Fig. 2. It consists of a board with beveled ed arranged so as to slide freely between guides Bcrewed to an upright back board. To the sliding board a pieee of drawing paper was secured, against which rested a peneiJ attached tea lever in the manner shown. The other end of tin: lever was in contact with the bottom of the boiler, ueai the point at which the girth-joint passed under it; and the knife edge fulcrum was so placed thai the movements of the boiler were magni- fied bj the lever eight times, —an elevation of I the .oiler-shell of - H l of an inch, causing the pencil to move precisely one inch. To draw the movable board along art a uniform rate, a pail containing sand was floated in a large bucket of water, and the water was allowed to flow slowly out of the bucket by means of a pet-cock. As the water level went down, the pail containing the sand followed it, and the hoard was drawn along so that the pencil drew an irregular line, representing the motion of the boiler. It is difficult to adjust a small water-jet so that it shall have a uniform discharge, and for this reas, .n the working of the apparatus was not so good as could be desired However, the diagram shown in Fig. 3 was obtained by means of it, the times being 3
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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
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
Page 61 and 62: Til B LOCOMOTIVE 53 mnd scalded, an
Page 63 and 64: 1894.] THE LOCOMOTIVE 55 way. Erect
Page 65 and 66: 1894.] Til i: LOCOMOTIV B. 57 The J
Page 67: 1884.] THE Loco M OTIVE 59 also giv
Page 70 and 71: 62 THE LOCOMOTIVE. [April, 1881, th
Page 72 and 73: 64 Incorporated 1866. THE LOCOMOTIV
Page 76 and 77: 68 THE LOCOMOTIVE. [Mat, ning, and
Page 78 and 79: 70 T II E L O C M ( ) T I V E . [Ma
Page 80 and 81: 72 THE LOCOMOTIVE. [May, (67.) —
Page 82 and 83: 74 THE LOCO M T I V E tfSI It 1$ 1
Page 84 and 85: 76 THE LOCOMOTIVE [Mat, No. of Voya
Page 86 and 87: 78 THE LOCOMOTIVE. [May, laugh. Two
Page 90 and 91: 39 THE LOCOMOTIVE. [.Jine, pounds^
Page 92 and 93: 84 THE LOCOMOTIVE [June, |", the ho
Page 94 and 95: 86 THE LOCOMOTIVE. [June, Nature of
Page 96 and 97: g3 THE LOCOMOTIVE. [Jink, testing i
Page 98 and 99: 90 THE LOCO M T 1 V E [June, $ t $
Page 100 and 101: — 92 THE LOCOMOTIVE [June, and th
Page 102 and 103: 94 THE LOCOMOTIVE [Juke however, to
Page 106 and 107: 98 THE LOCOMOTIVE [July, minutes be
Page 108 and 109: 100 THE LOCOMOTIVE. [July, rear hal
Page 110 and 111: 102 THE LOCOMOTIVE. [July, shattere
Page 112 and 113: 1(34 THE LOCOMOTIVE. [July, HARTFOR
Page 114 and 115: 1C6 THE LOCOMOTIVE. [July, connecte
Page 116 and 117: 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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1 1 Q THE LOCO M T 1 V F . [August,
Page 126 and 127:
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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128 Incorporated 1866. THE LOCOMOTI
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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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Page 154 and 155:
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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Page 170 and 171:
162 THE LOCOMOTIVE. [November, atte
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164 THE LOCOMOTIVE. [November, Natu
Page 174 and 175:
166 THE LOCOMOTIVE. [November, Hild
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168 THE LOCOMOTIVE. [November, caus
Page 178 and 179:
170 THE LOCOMOTIVE. [Novembek, HART
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472 THE LOCOMOTIVE. [November, wate
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174 THE LOCOMOTIVE. [November, to t
Page 184 and 185:
Page 186 and 187:
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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