Machine Tools and Workshop Practice for Engineering Students and ApprenticesLongmans, Green, and Company, 1905 - 444 страници |
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Страница vii
... means is likely to produce a hollow . Obviously , the ordinary workman nowadays has urgent need of a knowledge of his limitations and of the methods of making delicate measurement , in order to produce work cheaply within a definite ...
... means is likely to produce a hollow . Obviously , the ordinary workman nowadays has urgent need of a knowledge of his limitations and of the methods of making delicate measurement , in order to produce work cheaply within a definite ...
Страница 3
... means of which measurement may be easily made to 1000 part of an inch . The above system is superior to that of divisions of eight , since it is much more convenient to calculate divisions of ten . The rules are marked as follows ...
... means of which measurement may be easily made to 1000 part of an inch . The above system is superior to that of divisions of eight , since it is much more convenient to calculate divisions of ten . The rules are marked as follows ...
Страница 4
... means the inter- national accuracy of metric standards is now assured throughout the world . The two metric standards above referred to are made of iridio - platinum , or an alloy of 90 per cent . of platinum and 10 per cent . of ...
... means the inter- national accuracy of metric standards is now assured throughout the world . The two metric standards above referred to are made of iridio - platinum , or an alloy of 90 per cent . of platinum and 10 per cent . of ...
Страница 7
... means of a screw , and may be tightened to any degree . There is further improvement by having a short additional leg and a screw- locking arrangement . This permits the calipers to be inserted in the cavity of a chambered hole ; then ...
... means of a screw , and may be tightened to any degree . There is further improvement by having a short additional leg and a screw- locking arrangement . This permits the calipers to be inserted in the cavity of a chambered hole ; then ...
Страница 14
... means of a stout bolt and nut and two or more smoothly - faced washers . 66 400 The difference in diameter between the two fitting parts is immeasurable by ordinary tools ( about 4 of an inch ) , but it is always perceptible to the ...
... means of a stout bolt and nut and two or more smoothly - faced washers . 66 400 The difference in diameter between the two fitting parts is immeasurable by ordinary tools ( about 4 of an inch ) , but it is always perceptible to the ...
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addendum circle adjustable angle plate B.Sc bearings bevel bolts boring calipers carried cast iron centre change wheels chisel chuck cone crank Crown 8vo cutting edges cutting tools cylinder Diagrams diameter diametral pitch disc drill driving ELEMENTARY emery wheel engine feed finished fitted fixed forged gauge gear grinding grinding machine grip groove ground guide screw hammer hardened headstock heat holes hydraulic Illustrations jaws lathe length lever mandrel measured metal mild steel Millimetres milling cutter milling machine motion number of teeth obtained operated parallel piece pinion pipe piston pitch circle placed planing machine position practice pressure pulley reamer rest revolutions per minute revolving rivet rotated saddle screw threads secured shaft shown in Fig side slide slot speed spindle square standard surface taper threads per inch tooth turned turret vertical worm wrought iron
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