Description of Allen and Drew Monowheel drive for hangar doors which replaces one or both rollers on which door rides; this drive consists of motor, clutch and worm driven flanged wheel, mounted on casting provided with swivel connection and will handle 1000 sq. ft. of opening; duplex drive is for openings up to 2500 sq. ft.
Electric monorail locomotive operates hangar doors
Airway Age
Airway Age ; 10 , n 10
1929
2 Figs.
Article (Journal)
English
© Metadata Copyright Elsevier B. V. All rights reserved.
The hangar doors at ford airport
Engineering Index Backfile | 1929
Turbine locomotive operates non-condensing
Engineering Index Backfile | 1932