Transcriber’s Notes
Inconsistencies in spelling, lay-out, hyphenation, etc. have been retained, except as mentioned under Changes below.
Some reference letters’ case in the text does not correspond to that shown in the illustration, and some of the reference letters are used inconsistently in different illustrations; this has not been rectified unless mentioned below. The not always numerical order of the illustrations in this e-text is the order of the source document. Depending on the hard- and software used to read this text and their settings, not all elements may display as intended. The scale as indicated in the illustrations in this e-text is not necessarily correct.
Several characters as used in this text are used to represent the shape of the symbol or letter rather than the symbol’s (e.g., ⟂) or letter’s (e.g., ~U~) actual meaning.
Page 47, ... a spiral spring, s s, fig. 31, which is compressed ...: the letters s are not visible in the illustration (the spring is).
Page 52, ... if we construct a scale S, S, fig. 38, ...: the printing quality of the source document was not sufficient to make this entirely visible in the illustration; the text and fig. 39 may provide clarity. The parts that were legible have been enhanced.
Page 77: Fig. 41 contains different reference letters h: two in the smoke stack (left-hand side of the illustration), one underneath the steam whistle. Both are referenced in the text.
Page 102, ... the distance d f will then be the centre ...: one or more words may be missing (... which will then be ... or similar).
Page 154, ... with two handles, l, l, fig. 71, which are raised ...: reference letters l do not occur in the illustration (nor are they listed in the parts list following the illustration).
Page 166, Fig. 93: the right-most reference letter is an upside-down W, not an M.
Page 181, ... and the other two the reverse way: possibly an error for ... and the other the reverse way.
Page 258, caption with fig. 145: Scale ³⁄₁₆ in. = 1 foot is probably an error for Scale ³⁄₁₆ in. = 1 inch.
Page 269, ... and y, plate II, and fig. 40, the centre-pin ...: the centre-pin is indicated by Y in Plate II.
Page 337, The running-boards are planks, i i, plate I, ...: the reference letters i i are not visible in Plate I.
Page 430, Sentence starting For this reason a truck consisting of a single pair of wheels, ...: as printed in the source document; some text may be missing.
Page 448/449, Table and paragraph starting From this table it will be seen ...: probably the last two columns of the table list decimal fractions rather than percentages (e.g., fuel is probably 0.3 of operating costs of locomotives rather than 0.3%).
Page 544: Part XL should have been called Part XXX.
Appendices: unless mentioned under Changes below the tables are given here as printed, although they may contain (minor) errors.
Changes made
Footnotes and illustrations have been moved out of text paragraphs. Some of the illustrations have been rotated. Figure numbers and scale indicators have been removed from within some illustrations and have been transcribed as (top or bottom) captions.
Where they were missing, periods have been added to illustration captions. Numbered questions have (where relevant) been standardised to end in a question mark. Reference letters in the text have been standardised to italics.
Some obviously missing punctuation has been inserted; some minor obvious typographical errors were corrected silently. In some tables and lists ditto marks have been replaced with the dittoed text.
Page iv: Die Schule des Locomotivfuhrers ... changed to Die Schule des Locomotivführers ....
Page xvi: ... as shown in the sections of the apple at A and B. changed to ... as shown in the sections of the apple at C and D.
Page 1: The steam, if admitted at c ... changed to The steam, if admitted at C ....
Page 40: ... those portions of the face h, i, and p, q, which cover the steam-ports, ... changed to ... those portions of the face h, i, and h′, q, which cover the steam-ports ....
Page 56: ... conditions which were used in the answer to Question 60 ... changed to ... conditions which were used in the answer to Question 57 ....
Page 58: It was shown in answer to Question 56 ... changed to It was shown in answer to Question 57 ....
Page 102: ... we will step off the distance d f f ... changed to ... we will step off the distance d f ....
Page 111: ... (shown also in fig. 43,) ... changed to ... (shown also in fig. 40,) ....
Page 129: first comma deleted from a, a′, Heater Pipe.
Page 135: Fig. 74: reference letter J changed to j.
Page 162: ... flanges, f f, cast on the pipes. changed to flanges, f, f, cast on the pipes.
Page 165: ... _heads_, A and _B_, ... changed to ... _heads_, _A_ and _B_, ....
Page 176: ... the tops guides are usually ... changed to ... the top guides are usually ....
Page 179: ... the journals of the coupling-rods, the brasses at m, m, ... changed to ... the journals of the coupling-rods, the brasses at n, n, ....
Page 195: Thus the line -o -o, ... changed to Thus the line -0 -0 ....
Page 216, table, row 4, column Point of release, Backward stroke 20¹¹⁄₁₅ changed to 20¹¹⁄₁₆.
Page 220: ... the slide-valve and ink motion? changed to ... the slide-valve and link motion?
Page 234 and 236: The first illustration with caption Fig. 136 has been renumbered Fig. 136a, the second one Fig. 136b.
Page 236, Fig. 136b: reference letter e (top centre) changed to c.
Page 261: The reverse-rod l′ k, which connects the lever with the vertical arm k ... changed to The reverse-rod e k, which connects the lever with the vertical arm k ....
Page 281: ... if two pairs of wheels, a, a′, b, b′, fig. 151, ... changed to ... if two pairs of wheels, a a′, b b′, fig. 151, ....
Page 292: ... a heavy timber, called a bumper-timber, E E, plates I, II and III, ... changed to ... a heavy timber, called a bumper-timber, E′ E′, plates I, II and III, ....
Page 297: These plates are of different lengths, as shown at B, B, in fig. 169, ... changed to These plates are of different lengths, as shown at B, B′, in fig. 169, ....
Page 308, answer to question 299: references to Fig. 178 changed to Fig. 177 (three times).
Page 327: ... the end of a longer lever E G′ B, fig. 192, ... changed to ... the end of a longer lever E G B, fig. 192, ....
Page 337: The hand-rails, m m′ m′, are brass or iron pipes ... changed to The hand-rails, m′ m′ m′, are brass or iron pipes ....
Page 345: closing quote mark inserted after formula.
Page 346, first formula: 1,266 changed to 1.266 as elsewhere.
Page 366: the source has two footnote anchors for a single footnote; the footnote has been copied.
Page 423: ... 649,725 units of heats, ... changed to ... 649,725 units of heat, ....
Page 432, answer to question 435: quote marks inserted around Consolidation as elsewhere.
Page 499, footnote 111: Katechismus der Einrichtung und Betriebes der Locomtive changed to Katechismus der Einrichtung und des Betriebes der Locomotive.
Page 544, footnote119: Katechismus der Einrichtung und Betriebes der Locomotive changed to Katechismus der Einrichtung und des Betriebes der Locomotive.
Page 561, Plate VIII: Scale, ¹⁄₈ in. = ft. changed to Scale, ¹⁄₈ in. = 1 ft.
Appendices: chapter headings Appendix I, Appendix II, Appendix III and Appendix IV have been inserted.
Index: some page numbers were corrected. Minor spelling differences between the text and the index have not been changed.