No disponible.
¿Tienes uno para vender? Vender en Amazon
Volver atrás Ir adelante
Escuchar Reproduciendo... Interrumpido   Estás escuchando una muestra de la edición de audio Audible.
Más información
Ver las 2 imágenes


Ver los formatos y ediciones Ocultar otros formatos y ediciones
Precio Amazon
Nuevo desde Usado desde
Tapa blanda, 4 jul 2012
click to open popover

Descripción del producto

Reseña del editor

This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1832 edition. Excerpt: ... per mile; thu9 overcoming 498 feet; the residue being divided upon the remaining 12 miles, would make an averaged grade of 30 feet per mile. Upon an ascending grade of 18$ feet per mile, (like that from the mouth of the Schenevus creek to the summit,) a looomotiro engine of 4 tons weight will draw a train of carriages weighing, with their loads 35A tons; allow for weight of carriages 10 tons, a.nd there remains for transportation of commodities 25$ tons, ascending in the direction of the greatest trade. Whereas upon a grade of 47$ feet per mile, (like that in the opposite direction,) the same engine will draw 19f tons; allow as before 10 tons for weight of cars, leaves 9 tons for transportation of commodities, which is nearly § as much as the descending load, and a much greater proportion than can reasonably be anticipated for the ascending trade. Upon an ascent of 30 feet per mile the same engine will draw 25£ tons; allow 10 tons for weight of cars, leaves 15 tons for transportation, &c.: and two engines of the same capacity will propel the same load up the ascent of 83 feet per mile; the grade being calculated to meet such emergency. And, as the ascending trade will probably be most fluctuating, occasions may occur when it will be necessary to put much heavier loads upon the ascending train than the regular proportion of trade, which furnishes an additional argument in favor of changing the grade on the Cobleskill division; in which case, horse power may conveniently be employed to aid their ascent up the 6 miles of steep grade; or extra locomotive engines may be applied, upon the plan adopted at the Rain-Hill and Sutton plans, upon the Liverpool and Manchester rail-road. The experiments, upon which the above calculations are...

No es necesario ningún dispositivo Kindle. Descárgate una de las apps de Kindle gratuitas para comenzar a leer libros Kindle en tu smartphone, tablet u ordenador.

  • Apple
  • Android
  • Windows Phone

Obtén la app gratuita:

Detalles del producto

Opiniones de clientes

No hay opiniones de clientes
Comparte tu opinión con otros clientes