Steam Locomotive Construction and Maintenance

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STEAM LOCOMOTIVE

CONSTRUCTION

AND MAINTENANCE


describing workshop equipment and practice in
the construction of modern steam railway
locomotives, with notes on inspection,
testing, maintenance and repairs


by

E. L. AHRONS

M.I.Mech.E., M.I.Loco.E.


LONDON

SIR ISAAC PITMAN & SONS, LTD.

PARKER STREET, KINGSWAY, W.C.2

BATH, MELBOURNE, TORONTO, NEW YORK

1921



Printed by
Sir Isaac Pitman & Sons, Ltd
Bath, England



CONTENTS

chap. page
Preface v
I. General considerations affecting methods of construction 1
II. boiler shop 8
III. Foundries 27
IV. Forgings, springs, etc. 35
V. Machine shops—frames and cylinders 46
VI. Machine shops—axles and wheels 56
VII. General machine shop 70
VIII. Erecting shop 80
IX. Setting the valves 96
X. Inspection and testing 107
XI. Locomotive maintenance and repairs 116
Index 133



ILLUSTRATIONS

fig. page
1. Diagram illustrating the manufacture of locomotive engine and tender 2, 3
2. Sections through locomotive boiler 10
3. Radial drilling machine for boiler plates 12
4. Diagram of plate-bending rolls 13
5. Boiler shell drilling machine 14
6. Hydraulic flanging press 16
7. Completed locomotive boiler 25
8. Axlebox moulding machines and moulds, G.W.R. Iron Foundry, Swindon 30
9. Iron foundry, Swindon Locomotive works 33
10. Blocks for forging straight axles 36
11. Stages in forging a crank axle 38
12. Buffer forging 40
13. Forged buffer casing 42
14. Pieces for forging buffer casing 42
15. Stamping shop with drop hammers 43
16. Underhung laminated spring 44
17. Frame plate 46
18. Punching the outline of the frame plate 47
19. Marking-off cylinders 49
20. Marking-off cylinder port faces 50
21. Double cylinder-boring machine 51
22. Horizontal drilling and facing machine for cylinders 53
23. Straight axle 56
24. Centre driven axle lathe 57
25. Crank sweep milling machine 59
26. Horizontal turning and boring mill for wheel centres and tyres 61
27. Boring tyres on horizontal boring mill 62
28.
29.
Tyre fastenings 63
30. Locomotive wheel lathe 65
31 
to 
34.
Tyre gauges 66
35. Wheel balancing machine, Great Western Railway, Swindon 68
36. Cast iron cylinder for piston rings 72
37. Tools in turret for machining piston rings 72
38. Grinding a piston rod 74
39. Crosshead and slide blocks 75
40. Milling connecting rods 77
41. Trammelling the frames 81
42. Erecting locomotive frames and cylinders 83
43. Marking the valve spindle for valve setting 100
44. Finding the dead centres 102
45. Locomotive testing plant, Great Western Railway, Swindon 114
46. Oval tube holes and cracked tube plate 119
47. Patch on firebox plate 121
48. Bushed tube holes in tube plate 122
49. Cracked and broken stays, with heads wasted away inside firebox 123
50. Tread of tyre showing wear and section after re-turning 127


This work is in the public domain in the United States because it was published before January 1, 1923.


The author died in 1925, so this work is also in the public domain in countries and areas where the copyright term is the author's life plus 80 years or less. This work may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.