File:Factory and industrial management (1891) (14594494718).jpg

Identifier: factoryindustria35newy (find matches)
Title: Factory and industrial management
Year: 1891 (1890s)
Authors:
Subjects: Engineering Factory management Industrial efficiency
Publisher: New York (etc.) McGraw-Hill (etc.)
Contributing Library: Engineering - University of Toronto
Digitizing Sponsor: University of Toronto

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am logging system that was tried in the cypress swamps ofLouisiana, and originated from simply placing a hoisting engine ona scow and dragging the cypress logs out of the swamp, but the con-dition of these swamps, being covered with the cypress knee, made italmost impossible to get the logs out without the improved methods.One of the small but very important details in snaking logs by cableis the steel cone-shaped cap or pilot placed on the end of a log insuch a way that the logs will glance by stumps or other ob.structionand can even be pulled around a tree. An ingenious loading derrick is used by the Lidgerwood com-pany. It rests on an ordinary flat car, and, on reaching the site wherethe loading is to be done, supports or blocking are placed at the sidesof the track and the entire frame is jacked up clear of the track.Then a stationary engine on the frame pulls the car from under, sothat the boom of the derrick can load the empty car. In fact, the der- 50 run nxcixp.RRiNG magazine.
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rick can pull a wholetrain load of emptycars under it, one ata time, and give eachone its load in pass-ing. Another use forthe cable is for load-ing and unloading>hips in places wherethere is no harbourwithin two miles orso of the shore, as inmany cases in SouthAmerica, but a pret-tier use still and onewhere no other mech-anism can take itsI < place is in the pass-;;;; S ing of coal betweend two vessels, especi-^ g ally when both areI % moving at a rapid^ ^ speed and the oceanis more or lessrough. The first marinecableway was suc-cessfully installed ont h e U. S. collier^larceilus where 20to 24 tons of coalper hour were trans-ferred, two bags be-ing carried on eachtrip, and the speed ofthe ^hips being from5 to 6 knots at thetime. The second trialwas on the Britishcollier :\rurier HOISTING AND HANDLING MACHINERY. 31 where 35 to 40 tons per hour were transferred over a mode-rate sea, and through a half gale of wind to H. M. S. Tra-falgar, the battle-ship maintaining a speed of fro

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