Constructing a Crank and Slotted Lever Mechanism in 3 Days

[ank_gl]

hey i have got to make a scaled model of any mechanism that we see around(or maybe we don't sometimes) in the machine shop in under 3 days as our summer training project. we are provided with all the raw stuff and machines that one usually sees in machining shop. i have decided to make a crank and slotted lever mechanism(initially thought of making an air gun put our instructor didn't want me to kill anyone arpund).
But if anyone could suggest something more interesting, i am looking forward to it. please suggest anything that can be made in under 12 hours(thats how much time i have got). i ll start the work on Monday, so i have got 2 days to finalize it. Any suggestion is welcome. i desperately need to do something this time :zzz:

 

[Danger]

How about a meat grinder?
You can do the screw auger on a lathe, the body and cross-bores on a milling machine, the grid on a drill press, and you still get to make your crank for it.
It's not as dangerous as an airgun, but you can destroy stuff with it.

 

[wolram]

A can crusher, with your own ingenious force multiplier.

 

[berkeman]

** Simple pendulum clock (CNC the gears)

** Mechanical floor jack

** Hydraulic floor jack

** Folding ladder (hey, it's a scale model, so no liability worries...?)

** Pin tumbler lock (scale it *bigger* to make it easier to see how it works)
http://home.howstuffworks.com/lock.htm

** Combination lock (ditto)
http://home.howstuffworks.com/combination-lock.htm

** Windmill-powered well water pump

** (hey, this is fun...!)

 

[ank_gl]

meat grinder, can crusher - they are good

 

[ank_gl]

still any mechanism that you people might want to suggest, i have got 2 days b4 i start. so please give me few more ideas
and thanks berkeman for those links, some yrs back i saw them, but still they are interesting to watch

 

[berkeman]

meat grinder, can crusher - they are good

Rats. Beaten out by Danger and Wolram again!

 

[ank_gl]

Rats. Beaten out by Danger and Wolram again!

nah, not beaten, actually jack will take some time to build
pendulum clock and Windmill-powered well water pump, other people are making them
but hey, remember you have still got 2 days to beat them

 

[Danger]

I don't know how fast you can work (not just your personal pace, but due to limited machine access), so I also don't know how limited your options are. I'll fire up a few more anyhow.
log-splitter; fly-ball governor as is seen on old steam engines (or the whole steam engine, if you can manage it); even better, a Sterling engine; pencil sharpener; Ferrari (nah, that's pushing it); telegraph key; milk separator (although most people have never heard of one); construction crane; coffee grinder; music-box; draughting machine; 3 or 4 speed manual transmission; fishing reel; gyroscope; Roots blower; Vise-Grip type pliers... okay, I'm getting tired now.

 

[berkeman]

I don't know how fast you can work (not just your personal pace, but due to limited machine access), so I also don't know how limited your options are. I'll fire up a few more anyhow.
log-splitter; fly-ball governor as is seen on old steam engines (or the whole steam engine, if you can manage it); even better, a Sterling engine; pencil sharpener; Ferrari (nah, that's pushing it); telegraph key; milk separator (although most people have never heard of one); construction crane; coffee grinder; music-box; draughting machine; 3 or 4 speed manual transmission; fishing reel; gyroscope; Roots blower; Vise-Grip type pliers... okay, I'm getting tired now.

Show-off

 

[Danger]

Hey, I'm at work... so I've got nothing better to do.

 

[ank_gl]

I don't know how fast you can work (not just your personal pace, but due to limited machine access), so I also don't know how limited your options are. I'll fire up a few more anyhow.
log-splitter; fly-ball governor as is seen on old steam engines (or the whole steam engine, if you can manage it); even better, a Sterling engine; pencil sharpener; Ferrari (nah, that's pushing it); telegraph key; milk separator (although most people have never heard of one); construction crane; coffee grinder; music-box; draughting machine; 3 or 4 speed manual transmission; fishing reel; gyroscope; Roots blower; Vise-Grip type pliers... okay, I'm getting tired now.

options are not limited by raw material and machines. i have full access to them
reciprocating engine mechanism, manual transmission, steering mechanism, vice; i suggested but earlier batches did 'em
sterling engine, check this out http://www.qrmc.com/hydralinkanimation.gif .
roots blower; i don't know if i would be able to machine the lobes,(can it be done on CNC, but still we are not allowed to work on CNC)
milk separator (although most people have never heard of one); i am one of them
construction crane, governor and gyro are good
Ferrari; that's pushing me, i would stick to Mclaren Merc

 

[wolram]

Hows about one of these, they are quite easy to make with plenty of info on the net, plus people will go OOOh when it sparks.

http://en.wikipedia.org/wiki/Wimshurst_machine

 

[Danger]

milk separator (although most people have never heard of one); i am one of them

I don't actually expect you to make one, but for curiosity's sake here's what I mean. Specifically the red one part-way down the page. There's a second link in the description that shows how it works. Basically, it's just a specialized centrifuge.
http://http://dairyantiques.com/Cream_Separators_1.html"
Actually, I'm quite offended that something I used regularly as a kid is considered a museum piece.

Nice link, by the way; I've never seen an engine like that one.

Wooley, your link doesn't work for me.

edit: Must be a problem with this stupid work computer. My own link doesn't work for me either.

 

[ank_gl]

http://en.wikipedia.org/wiki/Wimshurst_machine
it looks pretty much simple to make, do u think it i ll work
anyways i have got to show the mechanism only, it would be great if i get to make it functional

 

[ank_gl]

Actually, I'm quite offended that something I used regularly as a kid is considered a museum piece.

now i remember, my grandma used to have one. it was made of wood and it was quite simple to make actually