Anonymous A (OP) double-posted this 2 years ago, 33 seconds later, 1 hour after the original post[^][v]#1,232,516
@1,232,512 (Fake anon !ZkUt8arUCU)
She certainly could. I guess 20 years’ experience seems unlikely because she is so young, and I have to imagine it would have somehow come up before.
Anonymous A (OP) replied with this 2 years ago, 36 seconds later, 1 day after the original post[^][v]#1,232,641
@previous (spectacles)
Look, if you are a master horologist with 20 years' experience, please tell me right here and swear on it, and I will believe you.
spectacles replied with this 2 years ago, 11 minutes later, 1 day after the original post[^][v]#1,232,649
@previous (A)
i'm making you a clock. i'm just now cutting the pallets for the escapement. i'll post a few pics as i go along, and explain what you're looking at. this is the "tic-toc" part.
this one is technically called a "deadbeat" escapement, which i find appropriate. because what's the use of being an expert anything if you can't have fun with it?
Anonymous A (OP) replied with this 2 years ago, 4 minutes later, 1 day after the original post[^][v]#1,232,650
@previous (spectacles)
Why do you think I'm a deadbeat? That means someone without a job. Also, how do you feel about Seiko saying my watch should be maintained every 2-3 years?
spectacles replied with this 2 years ago, 1 hour later, 1 day after the original post[^][v]#1,232,663
here i'm using these nifty laser tools to "scribe" radius lines on the escape wheel and the pallet circle. this is the most important part of designing a clock mechanism. there's lots of different kinds of escapements, but they all have one thing in common, this is the part that makes it regulator. if the escapement is no good, then you don't have an accurate timekeeper. i have several clocks myself, a couple of Kieninger wall clocks, Hermle mantle clocks, and a James Stewart and Sons No. 30 grandfather clock in oak with a french polish finish, made in Armagh, northern Ireland. We were their only North American distributor for the entire time i was doing this work. Probably still are. We were the only North American distributor and the first distributor here for Erwin Sattler, we had an exclusive with them that they broke to give a shop in california and another in new york a shot at importing so we quit stocking them. unfortunately those shops were not stocking retailers and as of a few years ago still weren't carrying inventory. maybe they do now, but i doubt it. i know that our showroom was the finest in the country, and i'm sure it is still the most exotic collection of clocks next only to a hand full of museums, and for a long time carried the largest most varied collection worldwide. off the top of my head, three of our customers were Jerry Jones who owned the cowboys (and several players bought from us too but i don't know football so i don't really recall their names, but one was the kicker like 8 years ago?) Ross Perot who i personally met a year or so before he died, he was very short, but still like 15 people scrambled around at his offices as he came and went like he was the president, and the George W. Bush Presidential Library where they have a replica of the Oval Office including a reproduction tall case grandfather clock, and i happened to get to meet Laura Bush which is a whole story involving the secret service that's pretty fun.
yup. i wasn't just a horologist with 20 years of experience. i was extremely fortunate and lucky. Did you know that in 1889 during the World's Fair Expo, the one they built the Eiffel Tower for, that the Eiffel Tower actually had a tower clock built into the lower observation deck? they had a clock expo, and a French clockmaker designed the Eiffel Tower clock, it had hands several feet across and a 6 or 8 foot dial. But, the Eiffel Tower was meant to be temporary and was set to be torn down. So after the World's Fair was over, and before the tower was slated for removal, the tower clock was removed from the observation deck and sold to a private individual. Then, the citizens of Paris i think voted to keep the Eiffel Tower, but the clock was long gone at that point. It kind of disappeared after it changed owners a time or two (idk how many people owned it) and currently, i can tell you, it happens to reside in Dallas and is in a private corporate museum, at the headquarters of [REDACTED] in Las Colinas. i have pictures of it if anyone wants to see it. I was given permission to post about it publicly and share pics as long as i don't disclose the owner. that thing was god damned impressive. but kind of sad that it's in a private collection and not back in its intended place overlooking paris.
anyway, i'll post more pics of the "Deadbeat" Miller regulator tomorrow.
alright then.
cya.
spectacles quintuple-posted this 2 years ago, 45 minutes later, 1 day after the original post[^][v]#1,232,684
well fuck, i just tapped out a whole explanation for these. and the error message ate my post. WHY. Why can't it just dump the posts into a preview instead of just dropping them? the fact that we have to ctrl-a, ctrl-c every post because of the variety of errors that eat posts is just trolling at this point. i actually feel like i won a prize when i ctrl-a ctrl-c a post and it get's eaten, like, FUCK YEAH.
well, y'all can just look and see what i did. entry pallet, exit pallet, impulse faces are flat, locking faces are circular. 45 degrees, 3 degrees, tangent lines, midpoints, pallet circles, bip, badap, badoop, i used lasers and cutting jigs an cut a more perfect deadbeat escapement. because i didn't know lasers could be used as cutting tools. and i found out that you can make protractors and use transparency.
so, there you go, a deadbeat escapement with raw cut pallets. i'll cut the impulse face angles after i set 30 teeth on the escape wheel and have the tooth profile set. but, look how balanced, this picture should be while "playing" so the escapement can freely pivot. ctrl-a, ctrl-c
spectacles sextuple-posted this 2 years ago, 20 minutes later, 1 day after the original post[^][v]#1,232,685
oh, well it wasn't playing, but, this one is. it actually has very good characteristics so as long as i profile the faces well and the gear teeth are set very evenly and have a nice sharp profile it should have an even cadence, plenty of power under impulse, and have the locking faces properly preventing recoil, but i will likely have to profile the impulse faces to not drop out. we'll see. it's a game after all, but i fully expect it to work just fine. i'll build a stepper motor based "digital" timer to set it against when it's ready for regulation. that's the last step. but yeah, i'm making 2 clocks, basically. a weight driven analg pendulum clock that works under simulated gravity as the power reserve, and probably a 720 or 1440 rpm stepper motor based standard time keeper to run run it against. or as fast as i can get it to run without blowing up, since there's no clock in the game as far as i know. ctrl-a, ctrl-c
spectacles septuple-posted this 2 years ago, 13 minutes later, 1 day after the original post[^][v]#1,232,686
what kind of hands should i cut for it? spade, serpentine, straight (boring) or modern needles, art deco? there's a lot. and the dial, i roman numeral or arabic, white, with or without a vienna regulator ring, square, modern hour markers, it'll have a second hand. minute markers. i can do a tempus fugit dial, but it won't have a moon dial. if you want to see it with a moon dial then it'll get roman numerals and probably no more than a vienna regulator ring and a seconds register. y'all can pick, i don't mind.
spectacles octuple-posted this 2 years ago, 6 minutes later, 1 day after the original post[^][v]#1,232,687
and yes, i could make a chiming clock, but there's no point, there's no sound effects in the thing. it's also 2 completely additional gear trains to make a chiming clock. but, i am considering making it a striking clock. if not an full hour count, possibly just a passing bell style because that's just a cam, a rocker and 1 additional moving part. but a full hour count clock is a significant complication.
spectacles nonuple-posted this 2 years ago, 6 hours later, 1 day after the original post[^][v]#1,232,728
so this is a pretty classic regulator style deadbeat escapement. it actually works pretty well with unadjusted pallets, but it's going to probably need a 1 or 2 degree drop, the tolerances are super, super tight because i'm working with a game and the escape wheel is very far from perfect. and you can see the anchor (the /⁰\ shaped part) is cobbled together. there was a problem transferring the component parts cut from the pallet circles that was supposed to be a stencil to cut the whole shape out of one uniform piece, the sharp angles at the corners of the impulse faces were being docked and severely deformed on one side, so one half is a solid piece and the other half is in two pieces. it's been "glued" together from the stencil parts, because materials don't matter, they can be transformed, but i had to get creative with a few extra parts and weld them on. and then balance it. but it "works." atm the moment the drive shaft is set to "motor" with very low torque but very high speed so it stalls when the escapement is locked, and kicks forward to catch the impulse face. it's basically simulating a free turning drive train powered by a falling weight, and the escapement is preventing freefall. so it'll make a bit more sense with the rest of the gear train in place and motion works for the hands. i forgot to keep taking pics, because cutting and accurately planting 30 gear teeth at exactly 12 degree intervals with nearly identical depth in a video game AutoCad simulator is actually about as difficult as machining the thing out of brass. but machining is a very very exact kinda of a thing, and this was.... i had to figure out how i was going to even do it, i actually had no idea how i was going to do it. so, i'll let you know if it's actually correct after i play with it for a minute.
notice how it's not quite catching the dead faces and just plowing into the impulse faces. that's not quite right, but it's not unusual for a little drop to be added, but with further adjustments it should hopefully be a little less sassy.
spectacles triple-posted this 2 years ago, 3 hours later, 2 days after the original post[^][v]#1,232,811
now that's a deadbeat. the rest of the geartrain is pretty straight forward going into the motionworks which drives the hands. it's still being driven by the motor atm, but that doesn't make a lot of difference. a rotating shaft delivering power to the escapement is what makes a clock a clock, the escapement is the hard part. the final gear ratios are almost baked in, mostly it depends on the space, arrangement and what additional complications you stack on top of it, and you know, in real life actually doing all the work and making the thing for real. but, you know, you get what you pay for. and algodoo is free, so.
the escapement is working surprisingly well, i added a balance adjustment dial to the crutch where it connects with the pendulum. using a motor i can turn the dial to make fine adjustments directly to the escapement and you can see the effect it has on balancing. with clocks there's two kinds of balancing, external balancing of the case, and internal balancing which is the relationship between the symmetry of the pallets to the escape wheel teeth and the symmetry of the pendulum as it hangs inside of clock case and the overall balancing of the entire system. a clock that is visually balanced may not run because the internal balancing is off, likewise a clock that has the internal balancing out of adjustment may run just fine when the clock is visually unlevel. a clock that is level and balanced is a clock that tends to run, and this is the first thing to consider when any clock is stopping, and you can generally hear when a clock is balanced by the even ticking. if the cadence is off, sounding like a limp, the clock needs to have this adjustment made.
i also added a pendulum with the correct length, and a weight at the bottom to lower the center of mass towards the very bottom. the weight can be raised up and down which changes the period of the pendulum swing. raise it up to speed it up, lower it down to slow it down. very small adjustments make a significant difference over the entire run-time of the clock and shows up as fast or slow by some number of minutes. it is always necessary to synchronize the time after changing the pendulum length. when you do then you will notice that each time you check it after an adjustment that the clock runs more and more accurately. you can make this adjustment and see the effect in a 24 hour period. more frequently requires you to divide 24 hours by the number of hours that have passed and to then divide the adjustment you're trying to make by that number. it's a pain. and if you don't make in 24 hours then you have to divide your adjustment by the number of days since you sync'd the time. this is because you can base your adjustment off of the minute error in a day, which is basically tightening or loosening a screw by 2 turns for every minute of error. so it's easiest to make the adjustment after 1 day, everyday, until the clock is running accurately. this usually takes 2 - 3 days only. you can further make even finer adjustments and reach accuracy measured in seconds a week by doing the same adjustment after a week, and dividing your minutes of difference by 7. at this point you'll be making corrections by turning a screw by quarter turns or 8ths of a turn and you're unlikely to make measurable increases in accuracy. between 1 and 2 minutes a week is easy to reach after the first or second day of regulation. + or - 15 seconds a week is possible, but then temperature variations can impact the timing and you won't know if you're adjusting for the rate at which the clock runs or the temperature as it affects the rate. i recommend making this adjustment twice a year, once as it gets hot in the summer, and again after it gets cold in the winter. in total, typically about 4 turns of the screw per year is all they need to remain nearly perfect. but, not doing it at all only really means they'll be off by a few minutes a week, which most people find acceptable.
spectacles triple-posted this 2 years ago, 5 minutes later, 2 days after the original post[^][v]#1,232,930
also, notice that the motor torque is set at the absolute minimum 0.1 Nm and it runs very well, deadbeat escapements are among the most energy efficient. i can get that down even further when it's running a gear train driven by a weight. at that point it should properly stall and stop when the balancing is as far out as i showed it in the video
Anonymous F replied with this 2 years ago, 40 minutes later, 3 days after the original post[^][v]#1,232,934
@1,232,928 (spectacles)
Could you make a video showing how a winding mechanism with a weight can power a pendulum clock? I need this for my master's thesis.
spectacles replied with this 2 years ago, 4 hours later, 3 days after the original post[^][v]#1,232,943
@previous (F)
that's what I'm doing. there's a drum on the great wheel, or first wheel depending on how you prefer naming convention, and around the barrel you wind a cable for the weight to hang from. the weight and cabling provide torque to the great wheel which rotates the next series of gearing and you step down the torque with each successive wheel. off of one of those wheel, center wheel or third wheel usually you drive the motionworks off the arbor. typically the minute hand is fixed right onto the arbor and the motionworks are coaxial with the hour hand stepping from 24 rotations per day for the minute hand to 2 rotations per say for the hour hand. then from the center wheel you have additional gearing which drives the escape wheel. the escapement has 2 pallets, each pallet generally touches each tooth twice, once for each pallet, and the escape wheel typically takes 1 minute to make 1 full revolution, and that's usually the seconds shaft and you plug a hand onto it.
but there's a wide variety of designs and gear trains, number of wheels, tooth counts timings, there's no set way to do it. but they all basically do the same kind of thing, you have some kind of oscillator like a pendulum which regulates the rate at which something unwinds. like a cable wound around a barrel or a spring that's wound around a shaft. all the weight is really doing is falling, and the pendulum catches it every second and bounces a little bit one way or the other and that slows the weight down enough that from a height of about 5 feet or so it takes about a week for the weight to drop and fall that distance to the floor.
spectacles replied with this 2 years ago, 2 hours later, 3 days after the original post[^][v]#1,232,953
@previous (H)
depend on the type. these days you can find military surplus rubidium atomic clocks for a couple of thousand bucks. but you'd need to be an EE to make use of one, they output a signal that oscillates at a frequency and you can build a display that uses it to regulate the time. then there's cesium clocks, they squeeze cesium with microwaves to cool them down and then sprays them into a detector with more microwaves and the emissions resonate at and extremely high frequency and this is used as a regulator. I've never seen one in person.
unless you mean the ones branded atomic clocks, and those are quartz mechanisms with a little RF receiver and they pickup a radio signal that broadcasts the time and when it happens to pick it up, usually at night, it resets the hands on the clock using the same magnetic gear drum that drives the hands off the quarts timer. so they're automatic "updated time" quartz clocks.
Just the links: https://ibb.co/jVrCR4k - anyway, these show the full geartrain from escapement to the cable drum https://ibb.co/wN5rM7y - also showing how i loaded the drum with cable. had to make a tool. https://ibb.co/7kCVQkH - this is because of how rope works in game, just connects to whatever it touches when you place it. https://ibb.co/x6NdqwK - so i placed it on the tool, let the tool draw it through the mechanism, then spliced the cable to the drum. https://ibb.co/mS00StJ - kinda how you sometimes do it for real, but generally not. but a quick and easy was to load cabling that's broken on an installed clock if you don't want to open it up and get into it and take the whole thing out. just fish it through. ez.
damn... this image host doesn't have registration, allows uploads on the spot, and it's WAY WAY WAY fucking faster than imgur. Why aren't you using this host already?
spectacles triple-posted this 2 years ago, 21 minutes later, 3 days after the original post[^][v]#1,232,963
still needs 2 more gears for the motionworks to drive the hour hand, the minute hand is driven off of the 2nd wheel in this design. this is about as basic as i could get it. it can't be too complicated since Algodoo is to AutoCAD what Minecraft is to Architectural drafting. it's crashed on me a few times. aaaand it's all kinda wonky. like, at the moment the escapement anchor is made out of ice, because friction and junk. but whatever.
When i'm finished i'm going to try to catapult it with a trebuchet. otherwise what would be the point of using Algodoo?
spectacles replied with this 2 years ago, 54 minutes later, 3 days after the original post[^][v]#1,233,008
@previous (H)
they don't, really. they get and impulse with each swing in both directions. the impulse restores the momentum lost from drag and that sort of thing, and the arc length of a pendulum swing is generally about 4 inches if they were drawing a line on the ground. without an impulse the swing diminishes very quickly, and they aren't really swinging so much as wobbling. but pendulums are usually curved disks front and back, or some kind of aerodynamic profile to reduce drag, and they're heavier than you'd expect. and all the weight is at the bottom, the disk, or bob, the weight at the bottom is there to lower the center of gravity very nearly to the center of the bob or between the center of the bob and the weight. in some old clocks the pendulums were simply long cords with a weight at the bottom. they usually weight several pounds, the modern ones are pretty light, but it fucks with their life span, heavier pendulums carry more momentum and are more efficient once they're at full swing. takes less impulse to restore their swing. but even 20 years ago pendulums tended to be much heavier. 50 years ago they were heavy as fuck. 100 years ago they were lead.
also, pendulums have from a suspension. usually a flat leaf spring, in fact it's shaped like an H with half the material stamped out leaving 2 very thin, very small, narrow little strings and this is the pivot from which the pendulum hangs. it's to remove as much friction from the point of contact as possible. many clocks, especially french 16th and 7th century clocks used a silk thread for a suspension, and this is still a good alternative to a spring. a quick fix for even modern clocks with a broken spring is to use thread. but, modern clocks have to be kind of rigged properly to do that or they saw through the thread, they are pretty rough cut on the suspension leader because they can be.
anyway, take a piece of fishing line, tie a weight to it and see how long it will swing. that's a pendulum. and it's the length that determines the period more than anything. so a 1 meter pendulum will swing quite a lot longer than a 12 inch pendulum, for example. there's not much to them, they're just free swinging weights.
in the video i showed i tried freezing the weight to let it stop and it kept getting an impulse until i lifted the weight and the cord picked up slack. that's more than likely because it's a video game and the cords are just long lengths of very short jointed rods, and each joint has a certain amount of stretch to it before it breaks, and the weight i'm using is made from gold, which is the heaviest mass in the game. also there is a lot of energy that get stored up in the geartrain which only has one way to go, especially since i froze the weight with tension on it just hanging in mid air. and the perspective is deceiving, the game doesn't do the smallest scales on the order of centimeters and still have decently profiled gear teeth in the mm range. so the pendulum i'm using atm measures nearly 1 meter. it's 99.96 i believe. which means the entire gear train is like a meter and a half tall. and the gears are as big as car hoods. but i'm still using a 96:12, 96:12, 104:13, 30:12 set of gears which would normally be for a set of wheels that measure a few inches across. and they weigh quite a lot, but it doesn't matter, the gear train calls for a pendulum with a 2 second period, which is 99.96 centimeters, about 3 feet. typical for a standard floor clock. i can't scale the pendulum to match the gears sizes and weights otherwise the thing has a hundred pound weight and like 12 meters long with a period of like 8 seconds or more. and that won't work, that would call for an entirely different sort of clock. using a gravity escapement, like a tower clock.
the scaling has been a headache the whole time. it's one of the reasons the pendulum swings so shallow. getting it to hop up onto the dead faces is going to be a challenge. with a motor i can fine tune the torque and the report of the escape wheel, with a full gear train carrying slop and a weight providing for both it's going to come down to adjusting the masses and possibly recutting the escape anchor. but, it's not that big of a problem, it just isn't optimal. it is just a game though.
but it does bother me, so. we'll see how much. when i'm done i can send the file to anyone that wants to see it in game for themselves to check for hidden motors and stuff. there's not any.
spectacles double-posted this 2 years ago, 25 minutes later, 3 days after the original post[^][v]#1,233,010
by the way, the cable barrel ratchets were failing to support the heavier weight needed to get power to the escapement. traditional clicks wouldn't work, so the mess on the barrel is an invention. i've probably seen something like this before but idk what, i don't know if it'll stay together, explode, or carry more weight. but it's kinda neat looking when it ratchets. it almost looks like a little dude struggling to use his arms and legs to stop it from collapsing, i'll show it when i have enough cable unwound to wind it back up. it may be a while, the winding arbor gear makes 1 revolution in 8 hours. so.
spectacles double-posted this 2 years ago, 25 minutes later, 4 days after the original post[^][v]#1,233,021
@1,233,017 (F)
john harrison invented the ships clock. a marine chronometer. Galileo invented the pendulum clock on paper, but never built it. his answer for longitude was by astronomical observation, because he was more or an astronomer than a clockmaker. his contribution to clock making is well recognized, but people like Christian Huygens, John Harrison, George Graham, deserve the credit for revolutionizing the concept of timekeeping. Galileo didn't really have much to do with it, pendulums were well known in that era, i believe Galileo's biggest insight was proving that pendulums are isochronic oscillators. his clock design was novel, but it it was Huygens who really developed the pendulum clock into a actual thing. and john harrison's grasshopper escapement, which i one time made into a bong, is what led to him developing the chronometer and let sailors at sea navigate longitude.
Anonymous H replied with this 2 years ago, 1 hour later, 4 days after the original post[^][v]#1,233,035
Squeegee, if I have a budget of, say, half a million dollars, and I want a watch that is amazing in itself, that I can wear daily, but that I can also keep for investment for alter, what would be my choice(s)?
@1,233,035 (H)
go to Basel switzerland in the spring and head to the watch and jewelry expo.
@previous (Timemaster 3000 !WlFtPozYo6)
it's funny you bring that up, Jaquet Droz just made the world's first and it sold for nearly as much as a Grandmaster Chime. it's awesome looking. fucking imgur