Chain Hoist Restoration, block n tackle

Video Description

Chain Hoist , Polipasto de cadena, Цепная таль, Talha, Hisser, block n tackle Description: The hoist is a combination of a fixed and a loose pulley, or several pairs of pulleys. These can be placed one above the other in a common yoke, in the case of ship hoists for tensioning sails and ropes (so-called "talje", English tackle) they are placed next to each other on a common axis. The hoist combines the advantages of a free and a fixed pulley: it multiplies the applied force, which can act downwards. When using more rollers, the required force F is calculated according to the formula: F = G / 2n, where G is the weight of the load and free rollers, n is the number of free rollers. The invention of the hoist is attributed to Archimedes, who allegedly dragged a loaded warship into port with his help. It is also called Archimedes' hoist after him, where the movable end of the rope above the free pulley is hung on the yoke of another free pulley. Then it holds that the force decreases according to the relation F = G / 2n, where n is the number of really free pulleys. (source Wikipedia) Veronica has a new YouTube channel about cooking and baking, if you want to watch click on the link: https://www.youtube.com/channel/UCfEr2fPoAF0GVBuxUmSu2Iw/videos If you have any information, you can share it with others on my Facebook page: https://www.facebook.com/groups/951735661652138/ If you have any questions about the process, use machines or other things, ask me in the comments. I try to answer everyone and as soon as possible. I'm sorry for my bad English, it's not my language. I'm uploading videos about restoring mechanical things. I'm uploading videos about the restoration of old wooden things. I fix things as best I can. I am self-taught. Therefore, if some procedures are wrong, forgive me. Thank you. If you like this renewal, share and send :) Thanks for the advice on how to improve this channel! youtube channel https://www.youtube.com/user/veradona1 To support our YouTube channel: My Patreon Page: https://www.patreon.com/VeradonaRestoration My PayPal: [email protected] Thank you