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Homemade Miniature Chain Hoist


Miniature Chain Hoist
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BUILDER:
Frank Ford on frets.com
DESCRIPTION:
Homemade miniature chain hoist constructed from machine chain, a brass pulley, and an aluminum frame. Glides along a 1" galvanized pipe track.
RATING:
(8)
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Jun 03, 2019 7:00 PM
Anonymous
This is a "differential" hoist. Sears used to sell them. Very clever, the top sprockets, not pulleys, are keyed together and are different size. In that continuous loop of chain the lower part of one loop holds another sprocket and hook. That lower one could be a pulley. As the load is lowered the "pull loop" gets shorter, watch your fingers! When you raise the load the pull side gets longer. If you can picture a hand windlass and a bucket in a well, picture a big drum on one side of the windlass and a small one on the other. Now, a rope attached to both drums with several turns, as you turn the crank one side pays out more rope than the other takes up, that lowers the load.
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DIY Miniature Chain Hoist - comment on how to build a Miniature Chain Hoist - 8 comments
Anonymous says:
Jun 03, 2019 7:00 PM
This is a "differential" hoist. Sears used to sell them. Very clever, the top sprockets, not pulleys, are keyed together and are different size. In that continuous loop of chain the lower part of one loop holds another sprocket and hook. That lower one could be a pulley. As the load is lowered the "pull loop" gets shorter, watch your fingers! When you raise the load the pull side gets longer. If you can picture a hand windlass and a bucket in a well, picture a big drum on one side of the windlass and a small one on the other. Now, a rope attached to both drums with several turns, as you turn the crank one side pays out more rope than the other takes up, that lowers the load.

cncdigger says:
Oct 04, 2018 6:47 AM
I have been looking at this hoist for the last few days and I'm wondering how the load can be lifted if the 2 chains are looped around each pulley independantly as they seem to be. To me, all that does is when you pull on one chain, it just spins the other one faster (with no lifting or lowering action. To be able to move the hook up and down, one of the strand that goes thru the hook pulley must be fixed somewhere on the housing at the top. Or maybe I'm missing something. I'm no mechanical engineering! Can someone guide me here. Maybe Mr. Ford?

Anonymous says:
Apr 05, 2017 4:27 PM
Too bad you had to garbage up the component instructions. I would have enjoyed looking at them!

Anonymous says:
Mar 26, 2017 8:12 PM
The answers is in the title.

Anonymous says:
May 01, 2016 5:30 AM
I am with Johnmto, I want to know how this is anchored.

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