Lifter Safety

A Lifter depends on the use of a heavy load in its carriage. Anytime one lifts a heavy object over ones head there is the possibility that a failure of the supporting structure may result in damage to the Lifter or injury to those using it. Hoisting heavy objects over our heads has been around for some time and for just as long there has been the desire of those who do so to prevent damage or injury to equipment or themselves. One such invention that raises heavy objects and that the public uses everyday is the elevator. Some of the same safety measures used by elevators are transferable to Lifters.

Safety Additions Added

Lifter Safety.wmv

In the above video I have introduced some additional safety measures to the Rack and Pinion Lifter. One such safety device is an Otis Elevator Safety Brake. I also introduced another type of safety device inspired by what I saw here Speed Operated Safety System.

Adding safety measures to a Lifter makes adding additional weight to the carriage safer. This is good, since more weight in the Lifter gives one the possibility of a longer drop time, more output and a greater selection of possible output devices.

The videos in this section shows the carriage loaded up with about 500 lbs. With this much weight in the Lifter some of the previously used LED lights that were operated with much less weight are shown to operate with a new hand crank generator. The additional weight also makes it possible for the larger generator to light more power hungry lights, usb devices and charge 3-12 vdc batteries.

Magnic Light Demo

Magnic Light RPM Test.wmv

The Magnic Light is a favorite of mine and has been used as sort of a bench mark test for Lifter efficiency. I have used more weight in an outside Lifter to drive the action wheel that runs the Magnic Light, but not with an indoor Lifter. Getting enough weight in the Lifter to drive the output wheel has been the challenge and 500 pounds is just about right.

Gravity Light Drop Test

Gravity Light Drop Test.wmv

Since I received a Gravity Light I have tried to increase the output time that it might operate. If you have read up on the Gravity Light then you know that it normally runs for about 20 minutes with the dropping of a 20 pound weight from a height of 8 feet. This video shows that with 500 pounds I was able to get 45 minute drop time per foot. The output was fairly steady and bright. If it had been operated with less brightness then it would have required a little less weight and operated with an even longer drop time.

A Lifter equipped with new safety devices makes it a lot easier to use and trust when the carriage is heavily loaded. When a larger more powerful generator is driven by the Lifter the choice of output devices increases. Not only does it provide power for the previously used lights that were driven by a smaller generator like that taken from a Gravity Light, but the larger generator opens up the possibility of driving other output devices that the smaller generator could not.

500 Pound Misc Output Demo