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^ rtE.'pTWE © (§) THE LOCOMOTIVE. JyLNliAKY, ii A b£^ (2) (§) Fig. 2. — Another Dangerous Feed CoiraECTiON.
1893. THE LOCOMOTIVE. prevent the water in one boiler from buckiiiy up into tlie otlier ono, if tlit-n; sliouhl beany diflTerence in pressure iu tlie two boilers. Such a diflerence in pressure mifrlit easily arise from :i variety of causes; for instance, if the stop-valve in the steam pipe leading from either boiler were closed, a dit!erenee in pressure would immediately nrsuit. :md a change in the relative water levels in the two boilers would follow, unless one of the valves FT were also closed; and as these valves are at the back end of the set- ting, it would not be strange if the fireman should occasionally forget to attend to them, especially if he left them open habitually, as in the present case. It is also found, in prac- tice, that if the fire in one of the furnaces is brighter than that in the other one, water is apt to back out of the hotter boiler, even when the steam valves are both open, and the pressure apparently equal throughout the system. In any case, the arrangement is a dangerous one, and should not be tolerated when safety can be so easily secured. While we do not approve of the feed entering the boiler at the bottom, as shown in the cut, we Fio. — AXOTHER DaXGEROFS FeED CONNECTION. may suggest that the greater part of the danger can l)e removed by putting in check- valves at AA, for by this simple change the backing out of water from either boiler can be effectually prevented. Fig. 2 shows a somewhat similar arrangement, excc])t that in this case there was no check-valve at all, and the pump-valves had to hold the direct boiler pressure all the time. <strong>The</strong> valves shown at BB were only used when blowing ofi", and were kept closed at other times. Valves AAA were ordinarily left open. <strong>The</strong> boilers were set over se|>- arate furnaces, as before, and all the objections that apply to Fig. 1 are equally appli-
Page 2: PRESENTED BY y rv
Page 8 and 9: ~\; -^ A .
Page 12 and 13: THE LOCOMOTIVE. [January, a o o M -
Page 14 and 15: 6 THE LOCOMOTIVE. [January. In both
Page 16 and 17: 3 THE LOCOMOTIVE. [Januahy, been em
Page 18 and 19: ^Q THE LOCOMOTIVE. [January, ])rove
Page 20 and 21: 42 THE LOCOMOTIVE. [January, Sit «
Page 22 and 23: 14 THE LOCOMOTIVE. [January. After
Page 24 and 25: 16 TlIK hOCOMO'J'i Vi.. Incorporate
Page 26 and 27: 18 THE LOCOMOTIVE, [Februaky, stren
Page 28 and 29: 20 THE LOCOMOTIVE. [February, could
Page 30 and 31: 22 THE LOCOMOTIVE. [February, Natur
Page 32 and 33: 24 THE LOCOMOTIVE. [Februart Paper
Page 34 and 35: 26 THE LOCOMOTIVE. [February, injur
Page 36 and 37: 28 THE LOCOMOTIVE. Pit *0tiim$tlt
Page 38 and 39: 30 THE LOCOMOTIVE. [February, jured
Page 40 and 41: 32 Incorporated 1866. THE LOCOMOTIV
Page 42 and 43: 34 THE LOCOMOTIVE, [March, pressure
Page 44 and 45: 36 T II E L () C O yi O T l\E. [Mar
Page 46 and 47: 38 'i^il^ LOCOMOTl V i:. [Makcu, (1
Page 48 and 49: 40 THE LOCOMOTIVE. [March, art & Co
Page 50 and 51: 42 THE LOCOMOTIVE. [March, Ml ^^^'3
Page 52 and 53: 44 THE LOCOMOTIVE. [Makch, should h
Page 54 and 55: ^(3 THE LOCOMOTIVE. [March, power o
Page 56 and 57: 48 Incorporated 1866. THE LOC (J MO
Page 58 and 59: 50 THE L O C O 31 U T I ^' E , [Apr
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52 THE LOCOMOTIVE. [April, (This is
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54 THE LOCOMOTIVE. [April, Castle,
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56 THE LOCOMOTIVE. [April, sious ar
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58 ' THE LOCOMOTIVE. [April, Hit St
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,60 THE LOCOMOTIVE. L-^p«il, nortl
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62 THE LOCOMOTIVE. [Aprfl, these pi
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64t Incorporated 1866. THE LOCOMOTI
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66 THE LOCOMOTIVE. [May, much as we
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68 THE LOCOMOTIVE. [May, diameter o
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70 THE LOCOMOTIVE. [May, by tirlce
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72 THE LOCOMOTIVE. [May, Boiler Exp
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74 THE LOCOMOTIVE. [May, HARTFORD,
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76 THE LOCOMOTIVE. [Mat, weeks amou
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'^8 THE LOCOMOTIVE. [Ma\% coat-tail
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80 Incorporated 1866. THE LOCOMOTIV
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82 THE LOCOMOTIVE, [June,
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84 THE LOCOMOTIVE. [June, Boiler Ex
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86 THE LOCOMOTIVE. [June, (105.)
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88 THE LOCOMOTIVE. [June, The Heliu
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go THE LOCOMOTIVE. [JrxE, Mkt Elttt
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92 THE LOCOMOTIVE. [June, ills lett
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•94 THE LOCOMOTIVE [June, .21 ia
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96 Incorporated 1866. THE LOCOMOTIV
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98 THE LOCOMOTIVE. [July, worked ov
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: ^QO THE LOCOMOTIVE. [July, Inspec
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102 THE LOCOMOTIVE. [July, (132).
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104 THE LOCOMOTIVE. [July, " The am
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106 THE LOCOMOTIVE. [July, tttSttlt
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-iQQ THE LOCOMOTIVE. [July, and als
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110 THE LOCOMOTIVE. [July without t
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112 THE LOCOMOTIVE. [July. Incorpor
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114 THE LOCOMOTIVE. [August, to whi
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116 THE LOCOMOTIVE. [August, tion.
Page 126 and 127:
118 THE LOCOMOTIVE. [August, (147.)
Page 128 and 129:
-120 THE LOCOMOTIVE. [August, A lar
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•J22 THE LOCOMOTIVE. [August, git
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124 THE LOCOMOTIVE [August, hard en
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126 THE LOCOMOTIVE. [August, The Bu
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128 THE LOCOMOTIVE. [August. Incorp
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^30 THE LOCOMOTIVE. [September, pau
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132 THE LOCOMOTIVE. [September,. iu
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-[34 THE LOCOMOTIVE. [September, Fi
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136 THE LOCOMOTIVE, [September, .35
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138 THE LOCOMOTIVE, [September, add
Page 148 and 149:
140 THE LOCOMOTIVE lSeptember, On a
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d42 THE LOCOMOTIVE. [September, cas
Page 152 and 153:
144 Incorporated 1866. THE LOCOMOTI
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146 THE LOCOMOTIVE. [Octobek, in pl
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i48 THE LOCOMOTIVE. [October, Natur
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[50 THE LOCOMOTIVE. [October, Curti
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•152 THE LOCOMOTIVE. [Octobeb, an
Page 162 and 163:
^54 THE LOCOMOTIVE. [Octobeb, Mkt e
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-[56 THE LOCOMOTIVE. [October, Tlie
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158 THE LOCOMOTIVE. [October, Of co
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Page 170 and 171:
162 THE LOCOMOTIVE. [November, that
Page 172 and 173:
: 16^4 THE LOCOMOTIVE. [XOVEMLER, I
Page 174 and 175:
166 THE LOCOMOTIVE. [November, boil
Page 176 and 177:
168 THE LOCOMOTIVE. Sit Ktttmttit c
Page 178 and 179:
170 THE LOCOMOTIVE. [November, KILL
Page 180 and 181:
172 THE LOCOMOTIVE [November, Boile
Page 182 and 183:
174 THE LOCOMOTIVE. [:November, sel
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178 THE LOCOMOTIVE. [December, grap
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: 180 THE LOCOMOTIVE. [December, In
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^82 THE LOCOMOTIVE. [December, that
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184 THE LOCOMOTIVE. [December, HART
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186 THE LOCOMOTIVE. [December, The
Page 196 and 197:
188 THE LOCOMOTIVE [Decembeb, angle
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190 THE LOCOMOTIVE. [December, Such
Page 200 and 201:
i92 Incorporated 1866. THE LOCOMOTI
Page 202 and 203:
INDEX, Equivalent of heat, redeterm
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