Electric elevators of modern design; winding machine and ropes; location of lift machines; cars; car slings; car safety gear and speed governor; balance weights; landing doors; locks; methods of control operating devices; indicator systems; d.c. controllers; pushbutton controllers; a.c. and two-speed a.c. controllers; micro-controllers; gearless traction and variable voltage control; controllers for lifts in ships. (See also Junior Instn. of Engrs, -- Jl vol. 39, no. 8, May 1929 pp. 359-378, 9 figs; See also - n 1490, 1491 May 24 31 p 473-474, 497-498)
Electric lifts
Machy. Market
Machinery Market ; n 1492
1929
3 pages
9 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
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