A Text-book on Applied Mechanics: Specially Arranged for the Use of Science and Art, City and Guilds of London Institute and Other Engineering Students, Volume 1Charles Griffin, 1895 - Mechanical engineering |
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Common terms and phrases
action ADDENDUM CIRCLE angle angle of repose angular velocity approach and recess arcs of approach axis base circle bearing belt or rope body brake centre coefficient of friction constant couple curves cwts cycloidal teeth d₁ d₂ diagram diameter direction displacement driving dynamometer efficiency engine epicycloid equal equation Exam EXAMPLE figure flanks force frictional resistance frustrum ft.-lbs grooves Hence horizontal horse-power hypocycloid inclined plane involute involute teeth journal leading screw leather Lecture length lever load lubrication machine motion number of revolutions number of teeth P₁ P₂ pair of teeth parallel perpendicular pinion pitch circle pivot plane pressure Principle of Moments pulley R₁ R₂ rack radius ratchet ratio revolutions per minute rotation screw shaft shown sinē speed spur wheel square inch tangent tension transmitted velocity-ratio vertical W₁ W₂ weight wheels in gear وو
Popular passages
Page 242 - A cycloid is a curve traced out by a point on the circumference of a circle which rolls along a straight line. The form of this curve will be understood from the accompanying figure.
Page 236 - The pitch of the teeth is the distance from the centre of one tooth to the centre of the next tooth, measured along the pitch line.
Page 139 - Notes on the Construction of Cranes and Lifting Machinery, by Edward CR Marks.
Page 34 - ... Arm of a couple is the perpendicular distance between the lines of action of the...
Page 31 - The perpendicular distance between the axis and the line of action of the force. Thus, if the axis MOMENT o
Page 243 - The cycloid is a curve generated by a point on the circumference of a circle which rolls on a straight line tangent to the circle.
Page 93 - Ibs. (Eight inches being the distance from the centre of the shaft to the centre of bearing of the nut on its guides.) Forces causing friction on the bearings are then 120 + 45 + 562.5 = 727.5 Ibs.
Page 328 - ... of importance and should be considered for each case. The ropes commonly used for the transmission of power in factories or mills vary from 3 to 5 inches in circumference. No matter what the diameter of the pulley may be, ropes of 1| inches diameter should not be exceeded for main drives, and ij inches diameter for secondary drives.
Page 6 - BC is the length of the projection of AB on the direction or line of action of the resistance, W. Hence, we have the following statement, which is often useful : — The work done by a force is equal to the product of the force into the length of the projection of the displacement on the line of action or direction of the force.
Page 2 - The unit of force is that force which, acting for one second on a mass of one gramme, gives to it a velocity of one centimetre per second.