Principles of MechanismLongmans, Green, 1870 - 463 páginas |
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Página 5
... greater or less velocity ; and this velocity is estimated by comparing the space passed over with the time occupied in describing it . 10. When a point describes equal portions of its path in equal successive times , the motion is said ...
... greater or less velocity ; and this velocity is estimated by comparing the space passed over with the time occupied in describing it . 10. When a point describes equal portions of its path in equal successive times , the motion is said ...
Página 15
... greater curvature than that of the concave edge at the point of contact . If this be not the case , successive contacts may take place at discontinuous points . * The distinction of contacts was first discussed by Olaus Römer , and more ...
... greater curvature than that of the concave edge at the point of contact . If this be not the case , successive contacts may take place at discontinuous points . * The distinction of contacts was first discussed by Olaus Römer , and more ...
Página 37
... greater and w W1 lesser hyperboloids , and R , R1 be the radii MP , NP of the respective gorge circles . w Pm R , Ꭱ W1 = R Pn 46. In fig . 27 the leading lines of the left half of fig . 25 are delineated , with the same letters of ...
... greater and w W1 lesser hyperboloids , and R , R1 be the radii MP , NP of the respective gorge circles . w Pm R , Ꭱ W1 = R Pn 46. In fig . 27 the leading lines of the left half of fig . 25 are delineated , with the same letters of ...
Página 38
... greater hyperboloid . A second plane , CfF , through C perpendicular to the axis NB , contains the radius CF of the lesser hyperboloid CE = √ Ee2 + Ce2 = √ R2 + PC2sin'a where PC is the half - length from the gorge circle of the ...
... greater hyperboloid . A second plane , CfF , through C perpendicular to the axis NB , contains the radius CF of the lesser hyperboloid CE = √ Ee2 + Ce2 = √ R2 + PC2sin'a where PC is the half - length from the gorge circle of the ...
Página 74
... greater than those of the rolling curves ( Art . 90 ) , that I do not think it worth while to occupy space by developing their theory , which may be easily deduced from the preceding pages . 100. It may happen that the variation of ...
... greater than those of the rolling curves ( Art . 90 ) , that I do not think it worth while to occupy space by developing their theory , which may be easily deduced from the preceding pages . 100. It may happen that the variation of ...
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Principles of Mechanism: Designed for the Use of Students in the ... Robert Willis Visualização integral - 1841 |
Palavras e frases frequentes
angle angular velocity ratio arrangement axes axis carried center of motion circumference coincide combination communicated cone connected constant contrivance cord crank cylinder dead point describing circle diameter distance driver edge ellipse employed epicyclic train epicycloid equal example excentric extremity fixed follower frame friction frustum geer geometrical series given groove hyperboloid hypocycloid involute last wheel length line of centers link-work logarithmic spiral machine mechanism move number of teeth obtained opposite direction oscillation pair parallel parallel motion pass path perpendicular piece pinion pitch circle plane point of contact position pully rack radial radii radius ratchet-wheel respectively revolution revolve right line roller rolling contact rotation round screw shaft shown side sliding solids of revolution string surface synchronal rotations tangent termed toothed wheel turn upper versin vertical Vide weight wheel-work