I don't have much to say, besides that this machinery is absolutely incredible
Пікірлер: 35
@burningdustАй бұрын
What a beautiful testament to old school electro-mechanical engineering. A simple design makes for years of service!
@Richard-od7yd Жыл бұрын
A tear came to my eye Im a Retired Elevator Mechanic
@RODALCO2007 Жыл бұрын
What an amazing machine room with the large motor and the smaller motor to do the lift movements. This equipment is from the early 1900's. 1908-1915 period. Absolutely incredible equipment over one century old.
@joelfenner6 ай бұрын
She's a little younger than that. She looks like 1920s machinery to my eye, 1930s at the absolute youngest - no younger than that though. Slate panels for the switchgear, with small(ish) contact assemblies- suggests 1920s to me. But I agree with you - the really smooth and curvaceous profiles on the castings, the svelteness of some of the cast sections and webs, screams "Great War" vintage or earlier. I'd bet she was designed around the 19-teens and was just continued in production much unchanged through the 20s. Probably Otis was running the same patterns in the foundry unchanged for a while.
@joelfenner6 ай бұрын
On the machine tag, the latest legible patent date is 1922. So she's gotta be at least that young. I guess I'm going to have to go patent diving to see what the mechanics behind the large spinning clutch between the two motors is. I guess that's for the automatic floor-leveling system (I think that's what the "micro drive" moniker meant). Haven't seen that before.
@neaelevator3 жыл бұрын
I would love to know the science behind this one. Truly awesome!!!
@kansasthunderman13 жыл бұрын
Micro Drive is based on the focusing adjustment of an astronomical telescope. The "course" adjustment is the floor to floor run and the "fine" is the final stop even with the floor.
@caroleast9636Ай бұрын
Simple science really. To get extremely accurate floor levels it helps to be running the machine on a very low gear ratio. This machine runs most of the way driving through the usual worm gear, then for levelling into the floor, a second worm gear is coupled to the back. The second little motor is driving through two worm gears I can’t remember the exact ratio, but it’s certainly extreme. That big round thing under a guard is the clutch that connects the two together for the final level. In 42 years as a lift engineer I’ve only ever seen a couple of them and they’re probably gone now.
@NeilPrasad_19053 жыл бұрын
BEST VINTAGE MACHINERY EVER!!
@c0t0d0s7Ай бұрын
It’s like a combo elevator and CT scanner.
@sictransitgloriamundi230 Жыл бұрын
Gebaut für die Ewigkeit. Eine wunderbare Maschine.
@joris38423 жыл бұрын
Very fine piece of machinery!
@mrmattandmrchay2 жыл бұрын
Now that it PROPER vintage!! :)
@Dana_Danarosana3 жыл бұрын
Absolutely incredible!!
@ElevatorExploration2 жыл бұрын
Really awesome machine
@Adam-mo7hsАй бұрын
Built to last
@kansasthunderman13 жыл бұрын
There were two of these Otis Micro Drive machines in the building where my elevator company was located in down town Los Angeles. They were originally powered by 600 VDC fro the street car line that came into the basement of the building. In the 1950's they were powered by an AC/DC motor generator in the machine room. Where does the elevator in this video get it's power from?
@SPS8elevatorsoflakecounty3 жыл бұрын
I’m not completely sure, to be honest with you
@TheTheo582 жыл бұрын
While these motors are DC and having spotted a DC rectifier in one of the controllers likely a 3 phase circuit either fused or circuit breaker in the electrical panel room (primary disconnect) powers the rectifier board.
@frankschultz41702 ай бұрын
Love that streetcar & interurban 600 Volts!
@we-qv7ge2 жыл бұрын
Amazing machine
@TheTheo583 жыл бұрын
One big geared traction machine, 2 DC motors if this machine room was from one of the two earlier videos of the cabs with the 2:1 roping I noted the dead hitch plate and ropes. I noticed it has a DC rectifier on one of the controllers.
@metroelevators46193 жыл бұрын
Whoa epic!
@PAelevators3 жыл бұрын
I still have you beat though. I’ve seen 3 in action at once 🤪🤪
@pony0532 жыл бұрын
I think there's a pair of micros at The Speed Building, here.....rototrol position indicators too