Original Usenet thread from alt.ascii-art, started 23 Jun 1994.
Line: Unloading Iron Ore
alt.ascii-art
· 2 messages · 23 Jun 1994 - 25 Jun 1994
Someone in rec.railroad wondered about how Iron Ore is unloaded from
bulk carriers on the Great Lakes. The answer is that today, all bulk
carriers are self-unloading, but that historically, the there was a
machine known as the Hulett or Grasshopper that did the job. I posted
the following to illustrate what these looked like:
________
______________ _ | |
|Counter -------_______|_| | NOT TO |
|_Weight___o__________________o| | SCALE! |
| | | | |________|
| | | |
__| o==================o|
Track on top of gantry | | | |
========================================== | |__
| |\ /\ /\ /\ /\ / \ \__/_/ | |_| Control Cab
| | \ / \ gantry / \ / \ /| |\ / hopper | \|
| | \/____\______/____\/____\/_|_|_\/ to hold| _/
| | / | | / bucket | |
| | / | |/ load / ^ \ Clamshell Bucket
| |/ |Rail| | / \/ \/
| / | Car| | |
| | |____| | | |__n n__|
|_| H H |_| | | | |
--^- -^--^---^--^---^-. | | | |
\ ore pit / track track |wwww| | bulk carrier| |wwwwww
\ / | | | hold | |
\_________/ | | |_____________| |
| \ / A typical
| \_______________/ great lake
\__
\/\___--____
\___---___-------__
Doug Jones
jon...@cs.uiowa.edu
In article <2ucid8$a8...@gagme.wwa.com> Douglas W. Jones, jon...@pyrite.cs.uiowa.edu writes: > machine known as the Hulett or Grasshopper that did the job. I posted > the following to illustrate what these looked like: > > ________ > ______________ _ | | > |Counter -------_______|_| | NOT TO | > |_Weight___o__________________o| | SCALE! | > | | | | |________| > | | | | > __| o==================o| > Track on top of gantry | | | | > ========================================== | |__ > | |\ /\ /\ /\ /\ / \ \__/_/ | |_| Control Cab > | | \ / \ gantry / \ / \ /| |\ / hopper | \| > | | \/____\______/____\/____\/_|_|_\/ to hold| _/ > | | / | | / bucket | | > | | / | |/ load / ^ \ Clamshell Bucket > | |/ |Rail| | / \/ \/ > | / | Car| | | > | | |____| | | |__n n__| > |_| H H |_| | | | | > --^- -^--^---^--^---^-. | | | | > \ ore pit / track track |wwww| | bulk carrier| |wwwwww > \ / | | | hold | | > \_________/ | | |_____________| | > | \ / A typical > | \_______________/ great lake > \__ > \/\___--____ > \___---___-------__ > > Doug Jones > jon...@cs.uiowa.edu Nice job Doug.... You can actually see one of these if you're in Marquette Mich. (in da Up der Eh?) Just north of Escanaba....They were going to turn it into a mall (can you beleive it) but it turned out to be structrally unsound. Only one difference: The Ore ships dock on the side of the Ore Dock.... This made it easy to unload ore from the Rail cars into the ships. ______________ _ |Counter -------_______|_| |_Weight___o__________________o| |...| | | |...| | | |.o====== ^ =========o| |...| / | |__ __;...;__ / #### | |_| Control Cab ...... / ## | \| _/###\_ ..... \ ## # | _/ |.'#'.#.| ..... \###/ # | | |RailCar| ...... \#/ # # ^ \ Clamshell Bucket |=======| _______V \/ \/ q p q p # # # =[=====]===[=====]= # | | Ore Dock | | ## | |\--------/| | # # | | \ / | | |__n # n__| | | \ / | | | | # ## | | | | \ / | | | |#,,.#.,###''.| | | | \/ | |w| | Edmund | |wwicewwww | | /\ | |w| |Frizgerald | |wwwwcoldwwww | | / \ | | | |_____________| | | | / \ | | \ / Lake | | / \ | | \_______________/ Superior \__ \/\___--____ \___---___-------__ (Ok, I admit it, I wanted to tell Doug what a nice job He had done, and had no ascii of my own to submit.... So I modified his to look like the oredock in Marquette Mich... (A beautify town on the Great Lakes Circle Tour... if you go be sure to head out to black rock.) ======================================================================= ======= Ben Herman | Disclaimer: Hey They don't even know I can Graduate Slave in Medical Physics | Read mail... more or less agree with me. ======================================================================= ======
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