MechanismLongmans, Green, and Company, 1905 - 408 páginas |
Dentro del libro
Resultados 1-5 de 77
Página 19
... vertical displacement will be represented by AC , and the horizontal dis- placement by CB , and these may be taken to represent the velocities in the three directions . Along any direction whatever , such as AD , the velocity will be ...
... vertical displacement will be represented by AC , and the horizontal dis- placement by CB , and these may be taken to represent the velocities in the three directions . Along any direction whatever , such as AD , the velocity will be ...
Página 21
... vertically , the ratio of the vertical descent of B to the horizontal displace- ment of C is obviously EG DF § 23. Belt - driving . - A very common illustration of a mechanism consisting of two lower pairs and one higher pair is pulleys ...
... vertically , the ratio of the vertical descent of B to the horizontal displace- ment of C is obviously EG DF § 23. Belt - driving . - A very common illustration of a mechanism consisting of two lower pairs and one higher pair is pulleys ...
Página 31
... vertical motion of A , but it reduces the friction and wear of the moving parts . Such a pulley or sheave mounted upon an axis is called a pulley block , and there may be more than one pulley mounted upon a block . Thus , Fig . 39 ...
... vertical motion of A , but it reduces the friction and wear of the moving parts . Such a pulley or sheave mounted upon an axis is called a pulley block , and there may be more than one pulley mounted upon a block . Thus , Fig . 39 ...
Página 36
... vertical line from the full to the dotted position . The average velocity of haul to lift is then simply the difference between the lengths of the cords CFE and CGE , divided by the lift AB . This depends upon the inclinations of the ...
... vertical line from the full to the dotted position . The average velocity of haul to lift is then simply the difference between the lengths of the cords CFE and CGE , divided by the lift AB . This depends upon the inclinations of the ...
Página 71
... a lathe , in which the work rotates about a vertical axis ; whilst the latter resembles a drilling machine , and will be found described in § 63 . A boring and turning mill is represented in Fig . SIMPLE MACHINES AND MACHINE TOOLS , ETC.
... a lathe , in which the work rotates about a vertical axis ; whilst the latter resembles a drilling machine , and will be found described in § 63 . A boring and turning mill is represented in Fig . SIMPLE MACHINES AND MACHINE TOOLS , ETC.
Otras ediciones - Ver todas
Términos y frases comunes
actuating addendum circle angle angular velocity angular-velocity ratio arc of approach attached axis B.Sc belt bevel wheel block centripetal acceleration circular arc common normal connecting rod connecting-rod coupler crank arm crank pin crank radius crank shaft crosshead Crown 8vo curve cutter cutting cycloidal cylinder described diameter direction displacement distance draw driving ELEMENTARY ellipse engine equal equivalent crank fixed centre gear horizontal Illustrations intersect involute keyed kinematic lathe leading screw length lever line of centres line of stroke machine mandrel mean position meshes move number of teeth obliquity obtained oscillating P₁ P₁A P₂ parallel motion perpendicular pinion piston pitch circle pitch point plane pulley rack radii reciprocating piece relative represent the velocity revolution revolutions per minute roller rolling circle shape shown in Fig sliding slot spindle spur wheel straight line tool tooth trace transmitted turning pairs valve velocity diagram velocity ratio vertical whilst worm wheel
Pasajes populares
Página 41 - NOTES of a COURSE of SEVEN LECTURES On ELECTRICAL PHENOMENA and THEORIES, delivered at the Royal Institution AD 1870.
Página 41 - Vol. I.— The Constitution of Nature— Radiation— On Radiant Heat in Relation to the Colour and Chemical Constitution of Bodies — New Chemical Reactions produced by Light — On Dust and Disease — Voyage to Algeria to observe the Eclipse — Niagara — The Parallel Roads of Glen Roy — Alpine Sculpture — Recent Experiments on FogSignals—On the Study of Physics— On Crystalline and Slaty Cleavage— On Paramagnetic and Diamagnetic Forces — Physical Basis of Solar Chemistry...
Página 26 - Our Place among Infinities: A Series of Essays contrasting our Little Abode in Space and Time with the Infinities Around us.
Página 26 - HALF-HOURS WITH THE STARS : a Plain and Easy Guide to the Knowledge of the Constellations. Showing in 12 Maps the position oi the principal Star-Groups night after night throughout the year. With Introduction and a separate Explanation of each Map. True for every Year.
Página 26 - NEW STAR ATLAS FOR THE LIBRARY, the School, and the Observatory, in Twelve Circular Maps (with Two Index-Plates).
Página 41 - Notes of a Course of Nine Lectures on Light, delivered at the Royal Institution. , By John Tyndall, FRS Crown 8vo. is. sewed, or is. 6d. cloth. Notes of a Course of Seven Lectures on Electrical Phenomena and Theories, delivered at the Royal Institution.
Página 20 - THE THEORY OF STRESSES IN GIRDERS AND SIMILAR STRUCTURES; with Practical Observations on the Strength and other Properties of Materials. By BINDON B. STONEY, LL.D., FRS, MICE With 5 Plates and 143 Illust.
Página 41 - Medallist of 1871— Death by Lightning — Science and the Spirits, Vol. II. — Reflections on Prayer and Natural Law — Miracles and Special Providences — On Prayer as a Form of Physical Energy — Vitality— Matter and Force — Scientific...
Página 22 - WORKSHOP APPLIANCES, including Descriptions of some of the Gauging and Measuring Instruments, Hand-cutting Tools, Lathes, Drilling, Planeing, and other Machine Tools used by Engineers. By CPB SHELLEY, MICE With an additional Chapter on Milling by R. R. LISTER. With 323 Illustrations. Fcp. 8vo., y. MINERALOGY, MINING, METALLURGY, ETC. by HILARY BAUERMAN, FGS SYSTEMATIC MINERALOGY.
Página 36 - A TREATISE ON THE DISEASES OF THE DOG ; being a Manual of Canine Pathology. Especially adapted for the use of Veterinary Practitioners and Students. With 88 Illustrations.