'Homemade' Elevator in residence.
Please don't shoot the messenger!
Friend has added a "Homemade" elevator in his home. He made a small car out of steel, without door & a electric winch (3200lb cap, 110v, purchased new just for this job) to drive it.
Winch is secured to basement wall & cable is routed through pulleys to top of car. Top pulley is secured using heavy piece of steel atop of ceiling joists of top floor.
Winch (Warn) a rectifier converts the 110 to I' guessing 12v DC for winch motor. Controller is hand held with momentary switches.
He wants to convert momentary switches to something else so he doesn't have to hold down the button.
As off now this set up doesn't have any safety stops.
I'm thinking a contactor (Double Pole) with DC coil. Run the 110 volt through contactor & continue to use handheld controller to energize coil. Auxiliary contacts in series with limit lever switches would allow elevator to go UP & Down without holding the Control button down & limit lever switches would shut winch down.
But where does Limit switches (LS) need to be. I haven't seen this Master Piece But I'm thinking the Car wobbels going in either direction to much for LS to trip correctly. A split bolt attached to cable could be attached at point that limit LS could stop Up motion. Because there is a length of cable that never winds through pulley or winch drum. And I'm thinking a 2nd LS would also trip for Downward motion.
This is out in county no inspector & homeowner will making connections.