poleas

Collection by Luis Hernan

7 
Pins
 • 
18 
Followers
Luis Hernan
The Low Tech Magazine - Pulleys(Diy Tech) Mechanical Advantage, Lifting Devices, Block And Tackle, Tech Magazines, Polaroid, Ideias Diy, Simple Machines, Tips & Tricks, Mechanical Engineering

The sky is the limit: human powered cranes and lifting devices

From the earliest civilisations right up to the start of the Industrial Revolution, humans used sheer muscle power, organisation skills and ingenious mechanics to lift weights that would be impossible to handle by most power cranes in operation today. The most common tower crane used in construction today has a lifting capacity of some 12 to 20 tonnes. For quite a few construction projects in ancient history, this type of crane would be completely inadequate. The majority of stones that make…

The Low Tech Magazine - Pulleys(Diy Tech) Mechanical Advantage, Lifting Devices, Block And Tackle, Tech Magazines, Polaroid, Ideias Diy, Simple Machines, Tips & Tricks, Mechanical Engineering

The sky is the limit: human powered cranes and lifting devices

From the earliest civilisations right up to the start of the Industrial Revolution, humans used sheer muscle power, organisation skills and ingenious mechanics to lift weights that would be impossible to handle by most power cranes in operation today. The most common tower crane used in construction today has a lifting capacity of some 12 to 20 tonnes. For quite a few construction projects in ancient history, this type of crane would be completely inadequate. The majority of stones that make…

myimaginarybrooklyn: “ spacetravelco: Scientific engravings from 1850 by John Philipps Emslie ”ergo - John Philipps Emslie, illustrations of Natural.Physics: page to a partwork on science, with pictures of mechanical equipment. Emslie, after hims Mechanical Power, Mechanical Design, Mechanical Engineering, Natural Philosophy, Block And Tackle, Geothermal Energy, Science Illustration, Simple Machines, Old Tools

itsokaytobesmart

spacetravelco: “ Scientific engravings from 1850 by John Philipps Emslie ” I move to give John Philipps Emslie his own posthumous Tumblr, like now.

Reeving blocks to set up a double pulley system requires a little thought. A double pulley system, also known as a "block and tackle," consists of the pulleys, or blocks, and the . Cool Tools, Diy Tools, Survival Tips, Survival Skills, Pully System, Mechanical Advantage, Block And Tackle, Tips & Tricks, Garage Shop

How to Set Up a Double Pulley System

Reeving blocks to set up a double pulley system requires a little thought. A double pulley system, also known as a "block and tackle," consists of the pulleys, or blocks, and the tackle, the ropes riven through the blocks. You must decide if you will use a double pulley system with one sheave--the roller in a ...