A Handbook of Applied MechanicsCollins, 1874 - 208 σελίδες |
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Σελίδα 11
... lifted per- pendicularly from the bottom of the sea . ( 9. ) Machines enable modern mechanicians to con- struct micrometers and other scientific apparatus with a precision and truthfulness previously unattainable . The different parts ...
... lifted per- pendicularly from the bottom of the sea . ( 9. ) Machines enable modern mechanicians to con- struct micrometers and other scientific apparatus with a precision and truthfulness previously unattainable . The different parts ...
Σελίδα 13
... lifting a pound 1 foot high ; or , it is the power necessary to raise one pound through the space of a foot . If ... lifted 20 feet . Required the units of work . Units of work - 2 x 112 × 20 4480. Ans . = Ex . 5. If 25 cubic feet of ...
... lifting a pound 1 foot high ; or , it is the power necessary to raise one pound through the space of a foot . If ... lifted 20 feet . Required the units of work . Units of work - 2 x 112 × 20 4480. Ans . = Ex . 5. If 25 cubic feet of ...
Σελίδα 14
... of work per minute = 1800 × 25 × 2 × 6 × 30 . i . e . , weight in pounds multiplied by the feet high they are lifted . ... Horse power = 1800 × 25 x 12 x 30 33000 = 4901 . EXAMPLES IN UNITS OF WORK . 15 Ex . 8. 14 APPLIED MECHANICS .
... of work per minute = 1800 × 25 × 2 × 6 × 30 . i . e . , weight in pounds multiplied by the feet high they are lifted . ... Horse power = 1800 × 25 x 12 x 30 33000 = 4901 . EXAMPLES IN UNITS OF WORK . 15 Ex . 8. 14 APPLIED MECHANICS .
Σελίδα 65
... lifted by aid of the lever GH , while I is the piston or plunger . M is a valve below the piston , which opens when the plunger rises , and shuts when it descends . N is a second valve through which the water is forced as the piston ...
... lifted by aid of the lever GH , while I is the piston or plunger . M is a valve below the piston , which opens when the plunger rises , and shuts when it descends . N is a second valve through which the water is forced as the piston ...
Σελίδα 70
... lifted up , and vice versa . The water first passes under the bottom of the plunger - piston , and is then forced into the tank . Water comes into x ; as a goes up it passes through b , a partial vacuum being formed below the plunger ...
... lifted up , and vice versa . The water first passes under the bottom of the plunger - piston , and is then forced into the tank . Water comes into x ; as a goes up it passes through b , a partial vacuum being formed below the plunger ...
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action angle angular velocity applied arms axis bar iron barrel beam blast blast furnace blistered steel boiler bottom carbon cast iron centre chain chisel column compression consists cool copper cord crane cylinder depth diameter direction elasticity employed engine equal feet fibres figure fixed flanges fluid fly wheel force friction fulcrum furnace girder give greater hammer handle heat hence holes horizontal hornbeam length lever lifted load metal minute motion mould moves passes piece pig iron pinion pipe piston placed planing machine plates plunger pounds pressure puddling puddling furnace pulley pump resist revolving rivets roller round screw shaft shape side slide rest solid specific gravity speed spur wheel square inch steam steel steelyard strain strength suppose surface teak tie rods timber tons tool tooth tube valve velocity vertical water wheel weight wire wood wrought iron
Δημοφιλή αποσπάσματα
Σελίδα 110 - Upon the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of' the base, equal to one another, and likewise those which are terminated in the other extremity.
Σελίδα 208 - COLLINS' SERIES OF FIRST-CLASS SCHOOL ATLASES, Carefully Constructed and Engraved from the best and latest Authorities, and Beautifully Printed in Colours, on Superfine Cream Wove Paper. MODERN GEOGRAPHY— Crown Series.
Σελίδα 107 - ... of the friction is, in every case, wholly independent of the extent of the surfaces of contact ; so that the force with which two surfaces are pressed together being the same, their friction is the same, whatever may be the extent of their surfaces of contact.
Σελίδα 45 - In some establishments the two ends of the roller are moulded in loam, over the chill, to secure concentricity of roller and coupling ; but this can be quite as safely arrived at by fitting the ears and pins of the boxes well to the chill. The chill is the important part in this mould : it ought to be at least three times as heavy as the roller which is to be cast in it, and provided with wrought-iron hoops to prevent its falling to pieces, for it will certainly crack if not made of very strong cast...