Principles of MechanismLongmans, Green, 1870 - 463 páginas |
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Página 8
... meets the axis , as at G and L. If the point change its direction in its path , this is indicated by the change of sign in the velocity ; for either direction being assumed positive , the other will be negative ; and so in this ...
... meets the axis , as at G and L. If the point change its direction in its path , this is indicated by the change of sign in the velocity ; for either direction being assumed positive , the other will be negative ; and so in this ...
Página 18
... meet in K , then will this point K be the momentary center . For as the extremity P moves round the center A , the direction of its motion at starting from P must be perpendi- cular to AP , therefore the momentary center will lie ...
... meet in K , then will this point K be the momentary center . For as the extremity P moves round the center A , the direction of its motion at starting from P must be perpendi- cular to AP , therefore the momentary center will lie ...
Página 20
... meet in K , and drop KL perpendicular to PQ , then pm : Pm :: PL : KL , and qn Qn :: KL : QL ; whence , compounding , pm : Qn :: PL : QL , which shows that L is the intersection of the two positions of the link . COR . 6. If the path of ...
... meet in K , and drop KL perpendicular to PQ , then pm : Pm :: PL : KL , and qn Qn :: KL : QL ; whence , compounding , pm : Qn :: PL : QL , which shows that L is the intersection of the two positions of the link . COR . 6. If the path of ...
Página 26
... meet at that point of the curve at an angle TSt . The salient point may be concave , fig . 16 , convex , fig . 17 , or concavo - convex , fig . 18 . connection with the frame , to move each in a 26 TRAINS OF MECHANISM . By Mechanistic ...
... meet at that point of the curve at an angle TSt . The salient point may be concave , fig . 16 , convex , fig . 17 , or concavo - convex , fig . 18 . connection with the frame , to move each in a 26 TRAINS OF MECHANISM . By Mechanistic ...
Página 30
... meet in direction or not , and these cases must be considered separately . Axes meeting . Let AB , AC be two axes of rotation intersecting in A , to which are attached cones ABE , AEC , whose apices coincide with A , and which have ...
... meet in direction or not , and these cases must be considered separately . Axes meeting . Let AB , AC be two axes of rotation intersecting in A , to which are attached cones ABE , AEC , whose apices coincide with A , and which have ...
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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