The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . er toescape from control and run away, as is occasionally thecase when a grip gets fast to a cable and refuses to let goits hold. About six hundred patents have been issued in theUnited States for forms of conduit electric railways, whichgoes to show that inventors are yery much alive to the de-mand for a suitable and practical system on this ordinary idea of such a railway is that it is necessarilya simple trolley-wire run tlirough a slotted conduit betweenthe tracks, co
The wonders of modern mechanismA résumé of recent progress in mechanical, physical, and engineering science . er toescape from control and run away, as is occasionally thecase when a grip gets fast to a cable and refuses to let goits hold. About six hundred patents have been issued in theUnited States for forms of conduit electric railways, whichgoes to show that inventors are yery much alive to the de-mand for a suitable and practical system on this ordinary idea of such a railway is that it is necessarilya simple trolley-wire run tlirough a slotted conduit betweenthe tracks, connection being made with the cars by meansof some form of plough passing through the slot. OurAmerican inventors have shown that they are not ham-pered by any such confining conditions. Joseph Sachs hasclassified the conduit systems as follows : 1. Open slot continuous conductor conduits, in which CONDUIT ELECTRIC RAILWAYS. 211 a continuous bare conductor is placed in an open slottedtrough. 2. Movable or flexible slot cover conduits, usinga flexible or movable cover to protect the wires and keep Fig. THE LOVE CONDUIT, WASHINGTON, D. C. the slot closed. 3. Surface contact systems, in which theconductor is placed on the surface of the roadbed. open slot conduits, with a sectional conductorplaced in the conduit, the sections being switched in andout of connection with the main line. 5. Raised contactsystems, in which the conductor is raised above the surfaceof the roadbed by devices on the car. 6. Induction sys-tems, in which the car has no connection with the wire,but the current is transmitted from the supply wires tothe car by induction. 7. Miscellaneous and combinationsystems. The first conduit electric railway was built in Cleve-land, Ohio, in 1884 (the same year that saw the birthof the first trolley road), by Messrs. Bentley & Knight,over a two-mile route. They made use of a small-sized, nearly square trough, set in the middle of theo 18* 212 WONDERS OF M
Size: 1841px × 1358px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubjectmachinery, booksubjectmechanicalengi
