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d42 THE LOCOMOTIVE. [September, cases many times. These forged and split pins are generally at least -^-g of an inch -tapering, and the holes into which they fit, being usually finished with a drift-pin, are in about the same condition. Then again, if we consider the fact that the holes hardly y :} u Fig. 14. — Braces to be Used with the Angle Irons Shown in Fig. 13. ever come fair, and that the pin is driven into place whether they do or not, it will readily be seen that the general bearing between the pin and the jaw of the brace will be very apt to be quite defective. "Askew " is the word that best expresses the pin's posi- tion in the majority of cases. And right here we would enter a strong protest against the © practice which prevails ^ ^^s^^"^"^^^^"" in many shops of driving these pins in when the brace is not just the right length. Where it is done, it is not possible Fig. 15. to obtain a uniform tension on the braces under any circumstances. We have known of cases where braces, put on flat crown sheets in this manner, had to be all removed, owing to the fact that the unequal tension on some of the braces, caused by driving in these tapering pins, loosened up all the others. Many cases of this nature have been discovered by our in- spectors, and the number of boilers sent out in this condition, which have never been subjected to impartial examination, is probably very great. Few persons seem to realize the importance of having the tension uniform on all the braces, or nearly so ; but it is not hard to see that if one brace is much tightei than its neighbors, it has to bear a load far heavier than its proportionate/
1893.] THE LOCOMOTIVE, 143 share. The result is, that it is liable to give way, and throw its loatl upon which- ever of the remaining braces is tightest. In this way, it will be seen, the braces in a boiler, if not properly put in, may snap ofT in quick succession, releasing the head and causing au ex2>losioD. It is not a hard matter to put braces in right. If they are too long or too short, they can readily be upset or drawn out a little, and then if the holes are not quite fair, they can be reamed out till they are so. They should never be driven together with a drift pin. r ~ ^^ M
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PRESENTED BY y rv
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^ rtE.'pTWE © (§) THE LOCOMOTIVE.
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THE LOCOMOTIVE. [January, a o o M -
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6 THE LOCOMOTIVE. [January. In both
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3 THE LOCOMOTIVE. [Januahy, been em
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^Q THE LOCOMOTIVE. [January, ])rove
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42 THE LOCOMOTIVE. [January, Sit «
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14 THE LOCOMOTIVE. [January. After
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16 TlIK hOCOMO'J'i Vi.. Incorporate
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18 THE LOCOMOTIVE, [Februaky, stren
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20 THE LOCOMOTIVE. [February, could
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22 THE LOCOMOTIVE. [February, Natur
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24 THE LOCOMOTIVE. [Februart Paper
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26 THE LOCOMOTIVE. [February, injur
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28 THE LOCOMOTIVE. Pit *0tiim$tlt
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30 THE LOCOMOTIVE. [February, jured
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32 Incorporated 1866. THE LOCOMOTIV
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34 THE LOCOMOTIVE, [March, pressure
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36 T II E L () C O yi O T l\E. [Mar
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38 'i^il^ LOCOMOTl V i:. [Makcu, (1
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40 THE LOCOMOTIVE. [March, art & Co
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42 THE LOCOMOTIVE. [March, Ml ^^^'3
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44 THE LOCOMOTIVE. [Makch, should h
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^(3 THE LOCOMOTIVE. [March, power o
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48 Incorporated 1866. THE LOC (J MO
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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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Page 102 and 103: •94 THE LOCOMOTIVE [June, .21 ia
Page 104 and 105: 96 Incorporated 1866. THE LOCOMOTIV
Page 106 and 107: 98 THE LOCOMOTIVE. [July, worked ov
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Page 110 and 111: 102 THE LOCOMOTIVE. [July, (132).
Page 112 and 113: 104 THE LOCOMOTIVE. [July, " The am
Page 114 and 115: 106 THE LOCOMOTIVE. [July, tttSttlt
Page 116 and 117: -iQQ THE LOCOMOTIVE. [July, and als
Page 118 and 119: 110 THE LOCOMOTIVE. [July without t
Page 120 and 121: 112 THE LOCOMOTIVE. [July. Incorpor
Page 122 and 123: 114 THE LOCOMOTIVE. [August, to whi
Page 124 and 125: 116 THE LOCOMOTIVE. [August, tion.
Page 126 and 127: 118 THE LOCOMOTIVE. [August, (147.)
Page 128 and 129: -120 THE LOCOMOTIVE. [August, A lar
Page 130 and 131: •J22 THE LOCOMOTIVE. [August, git
Page 132 and 133: 124 THE LOCOMOTIVE [August, hard en
Page 134 and 135: 126 THE LOCOMOTIVE. [August, The Bu
Page 136 and 137: 128 THE LOCOMOTIVE. [August. Incorp
Page 138 and 139: ^30 THE LOCOMOTIVE. [September, pau
Page 140 and 141: 132 THE LOCOMOTIVE. [September,. iu
Page 142 and 143: -[34 THE LOCOMOTIVE. [September, Fi
Page 144 and 145: 136 THE LOCOMOTIVE, [September, .35
Page 146 and 147: 138 THE LOCOMOTIVE, [September, add
Page 148 and 149: 140 THE LOCOMOTIVE lSeptember, On a
Page 152 and 153: 144 Incorporated 1866. THE LOCOMOTI
Page 154 and 155: 146 THE LOCOMOTIVE. [Octobek, in pl
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Page 158 and 159: [50 THE LOCOMOTIVE. [October, Curti
Page 160 and 161: •152 THE LOCOMOTIVE. [Octobeb, an
Page 162 and 163: ^54 THE LOCOMOTIVE. [Octobeb, Mkt e
Page 164 and 165: -[56 THE LOCOMOTIVE. [October, Tlie
Page 166 and 167: 158 THE LOCOMOTIVE. [October, Of co
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
Page 186 and 187: 178 THE LOCOMOTIVE. [December, grap
Page 188 and 189: : 180 THE LOCOMOTIVE. [December, In
Page 190 and 191: ^82 THE LOCOMOTIVE. [December, that
Page 192 and 193: 184 THE LOCOMOTIVE. [December, HART
Page 194 and 195: 186 THE LOCOMOTIVE. [December, The
Page 196 and 197: 188 THE LOCOMOTIVE [Decembeb, angle
Page 198 and 199: 190 THE LOCOMOTIVE. [December, Such
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i92 Incorporated 1866. THE LOCOMOTI
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INDEX, Equivalent of heat, redeterm
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