Ferguson's Lectures on Select Subjects in Mechanics, Hydrostatics, Hydraulics, Pneumatics, Optics, Geography, Astronomy, and Dialing: With Notes and an Appendix Adapted to the Present State of the Arts and Sciences, Volume 2Bell & Bradfute, J. Fairbairn : Mundell, Doig, & Stevenson, Edinburgh : J. & A. Duncan, Glasgow : and T. Ostell ... London, 1806 - Astronomy - 2 pages |
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Page 211
... convex or concave side of a circle . It will be sufficient , for our pre- sent purpose , to shew , that , when one wheel impels another , by the action of epicycloidal teeth , the moments of these wheels will be equal . Let the wheel B ...
... convex or concave side of a circle . It will be sufficient , for our pre- sent purpose , to shew , that , when one wheel impels another , by the action of epicycloidal teeth , the moments of these wheels will be equal . Let the wheel B ...
Page 214
... convex superfices odp of the wheel . " & Now , it it is demonstrable , that when one circle rolls within another , whose diameter is 4 The tooth c , in the Figure , should have been in con tact with the leaf n , and on the point of ...
... convex superfices odp of the wheel . " & Now , it it is demonstrable , that when one circle rolls within another , whose diameter is 4 The tooth c , in the Figure , should have been in con tact with the leaf n , and on the point of ...
Page 215
... convex superfices odp of the wheel . This form of the teeth , viz , when the acting faces of the pinion's leaves are right lines , tending to its centre , is exhibited , in Fig . 3 , and is , perhaps , the most advantage . Fig . 3 . ous ...
... convex superfices odp of the wheel . This form of the teeth , viz , when the acting faces of the pinion's leaves are right lines , tending to its centre , is exhibited , in Fig . 3 , and is , perhaps , the most advantage . Fig . 3 . ous ...
Page 218
... convex superficies of the cir- cle GDO . The epicycloid DNM thus formed , The same observation is made in Imişon's Elements " of Science and Art . - Vol . p . 91 . would have been the proper form for the teeth of 218 MECHANICS ,
... convex superficies of the cir- cle GDO . The epicycloid DNM thus formed , The same observation is made in Imişon's Elements " of Science and Art . - Vol . p . 91 . would have been the proper form for the teeth of 218 MECHANICS ,
Page 222
... convex circumference mn of the pinion . When the teeth of the large wheel are cylin- drical spindles , either fixed or moveable upon their axis , an exterior epicycloid must be PLATE II , formed , like D NM , in Fig . 4 , by a ...
... convex circumference mn of the pinion . When the teeth of the large wheel are cylin- drical spindles , either fixed or moveable upon their axis , an exterior epicycloid must be PLATE II , formed , like D NM , in Fig . 4 , by a ...
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Common terms and phrases
achromatic altitude angle aperture arch axis axle bottom brass breadth buckets centre of gravity circle circumference concave concave lens construction convex Convex lens crown glass curvature cycloid cylinder declination degrees diameter diminished divided effect engine epicycloid equal extremity fall feet fixed flint glass float-boards focal length force force of impulsion friction gnomon gudgeons horses hour-lines impelling inches inclination latitude LECT lens lenses lever load machine mean motion mechanic meridian meridian altitude method mill millstone minute move Newtonian telescopes node number of teeth object glass overshot parallel perpendicular pinion piston plane Plate pounds quadrant quantity radius raised reflecting telescopes refraction right lines roller sails screw shadow shew shewn side sine square steam stile subtract sun's suppose surface tangent telescope thrashing tion tooth trundle tube turn valve velocity vertical water-wheel weight wheel wind wind-mills