Line: Unloading Iron Ore
From Douglas W. Jones,201H MLH,3193350740,3193382879 <jon...@pyrite.cs.uiowa.edu>
· alt.ascii-art
· 23 Jun 1994 17:56 · View full thread
· report
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
Original message headers
X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: f996b,b3cefe227d3c275a,start X-Google-Attributes: gidf996b,public X-Google-Thread: fbb9d,b3cefe227d3c275a,start X-Google-Attributes: gidfbb9d,public X-Google-ArrivalTime: 1994-06-23 11:00:52 PST Path: bga.com!news.sprintlink.net!sashimi.wwa.com!gagme.wwa.com!not-for-mail From: jon...@pyrite.cs.uiowa.edu (Douglas W. Jones,201H MLH,3193350740,3193382879) Newsgroups: alt.ascii-art,rec.arts.ascii Subject: Line: Unloading Iron Ore Date: 23 Jun 1994 12:56:56 -0500 Organization: University of Iowa, Iowa City, IA, USA Lines: 38 Sender: bob...@gagme.wwa.com Approved: bob...@gagme.wwa.com Message-ID: <2ucid8$a8...@gagme.wwa.com> NNTP-Posting-Host: gagme.wwa.com Xref: bga.com alt.ascii-art:9641 rec.arts.ascii:363
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