This Mechanism only turns Clockwise, no matter what.
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- เผยแพร่เมื่อ 25 พ.ค. 2018
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• Mechanism for converti...
• Mechanism for converti... - วิทยาศาสตร์และเทคโนโลยี
This can be used for producing electricity with ocean waves, as when the waves come and return it will keep rotating in single direction only
Was thinking the same thing. It could be a paddle in close proximity to a shoreline, where the back and forth of the tide powers something that needs to run in one direction.
Ahh the classic attempt of harnessing the power of ocean waves. Researchers have been trying to figure out a way to harness the power of waves efficiently for many years now. Not saying this is a bad idea or anything it’s just interesting.
That's already been accomplished using paddles that move back and forth. I'm not sure how they make electricity, but they have pistons attached to the plate on either side.
It could be used in bicycle pedals. So that if you get tired pedaling in one direction, you can work different muscles by spinning in the other.
3 phase generators don't care about rotate direction, as long as there are magnetic flux changes, they will work just fine.
An odometer? So it adds distance whether driving forwards or backwards?
Probably
I thought that or a speedo too
Very nice thinking.
@@dannypoulin9630 They never said where it was...
@@dannypoulin9630 You said "No, an odometer is in the transmisition" but nobody said it was anywhere else so that was un-needed.
5:05
This mechanism is _very_ common on yachts. They are used for the main sheet, gib sheets and sometimes the Spinnaker/Jennaker sheets (a "sheet" is the term used for a "rope"; and the "gib" and "Spinnaker/Jennaker" are types of sails)
They are fitted with different gear ratios, so moving the crank in one direction reels in the sheet (rope) quickly, while turning it the other way ratchets it in the last few inches, tightening the sail.
I have no idea if they internally use this exact mechanism but I think what you're referring to are called two speed radial winches.
@@NicholasWellcome
wouldnt that just be using a different gear size on one end?
Well obviously a T-handle rail cart of course ...both sides of the handle travel up and down but only one direction of travel is produced
I'm pretty sure that in the thing ur talking about, if I'm thinking of the right thing, one side of the handle is attached to a wheel, and the momentum of the wheel keeps it spinning for some time when it's pressed down. When it is still spinning, the other handle gets pressed down, continuing the spin. I think it's really that simple. I made one out of Legos and I used a similar thing but with a type of freewheel sort thing, and that worked.
@@eliotlong5184 this would still work.
@@seriousmaran9414 yeah I guess but I think this would create more friction than necessary and it is not as reliable long term cuz of the ratchet like things
@@eliotlong5184 true that it would wear faster but often things were used at a slower speed back then. Ratchets were common in machinery and kept well lubricated. The ratchet drive for bolts is one such item.
Which is a real problem here, there are many uses to which such a device could be put. A lot of less efficient designs were replaced and engineering back can be difficult.
One plausible use would be winding up a rope or chain where there is limited room. Which might be more effective than a single ratchet windlass system.
Connect it to a simple steam cylinder and it will always wind up.
But you need to reverse the rail cart if you want to get home. I think they just used a simple crank.
But how can you *reverse* engineer it if it only works one way hmmmmmm?
lol, touche
But which way does the handle turn if you drive the output shaft?
whorayful as said, it locks up
using gear box
You need to chance direction of pawl and ratchet, then you can chance the direction of output shaft. Or you will make some "handle" to turn of one ratchet and turns on another one. It is not hard.
It’s basically a full bridge rectifier but mechanical!
FOOL BRIDGE RECTIFIAH!
points extra if you read this as electroboom xD
Not to brag about it, but I have a compilation of every time Mehdi said FULL BRIDGE RECTIFIER on my channel
+AL_O0 I've watched it and it is glorious!
I came here just to make this comment
Hello, this mechasim is used in automatic wristwatches, so that the fether can be upwinder in two directions
Are you sure? Most automatic watch movements I've seen don't work this way.
yes they use different mechanism. For example seiko
@@corynrobinson I thought some have bidirectional winding, and some just run idle if the rotor turns in the wrong direction.
I think in watches they would use the mechanism that was also shown in this clip. Some just turn idle if the rotor turns the wrong way for proper winding, some drive a different set of gears
@@marcdecock7946 surely a simpler mechanism, like in a bicycle free-wheel would be used?
You could make a prank bicycle that accelerates with back-pedaling, but I imagine the wear-and-tear would be horrendous.
easy there satan
Put that on that bicycle with opposite steering for even more injuries.
I feel sick, you monster. @@Fucisko
Don't have to put in that much effort, just add one gear to the original system to invert the output. Boom, done
You can also do that by crossing over the chain so it looks like a figure of eight
A similar mechanism is used in automatic mechanical watches. The swivelling weight can rotate in either direction and winds the spring. Great video, thank you!
Ed Jones was thinking about the exact same thing - friends often ask me how that works when I’m explaining how Mech watches work and I always explain it theoretically as two ratchets in opposition but it’s cool to see something like that in practice.
Do you guys have a link that explain exactly how this mechanism work in automatic watches ?
Guigui I mean it’s fairly simple. There is a large piece that rotates relative to the watch movement to be towards the ground (because of gravity) and that rotation is fed through gear sets to increase the torque. It then feeds into a ratchet that winds the main spring. Or in the case of nicer watches, two ratchets in opposition like this video that will wind main spring regardless of which way the original large piece pivots. Like this mechanism, there can’t be a lot of play because the movement of ur wrist occurs over a fairly narrow oscillation so it must make the best of those short movements
Soham Ray thank you but I think I didn't make myself clear, I know how a "self way automatic watch works", I just wanted to know if the "two way to one" mechanism was the same as the one in the video, I though it was completely different.
It was used to wind a clock automatically on ships
Could be used as a monodirectional hand-crank in any situation where the crank does not rotate entirely in a circle.
E.g. if the space allowed only gives 90 degrees throw to the lever.
That was exactly the thought that crossed my mind. It's efficient in some way then because there's no wasted movement, you get output from both sides.
When he did the quick back & forth, that's exactly what came to my mind.
Like a lever to manually put the landing gear down in a plane. Having the up and down strokes contribute to the task could save the plane if time is of the essense. 😀
Owen Sparks that's an excellent application. Further, if the pilot is flying solo, it would allow him to remain in optimal posture to watch his instruments, maintain control over the yoke, and would likely lead to less fatigue and stress on his own body, as the mechanics of his arms are not optimized for full circular rotation.
It is used in most modern sail winches from what I understand
Crank generators use this. You can pump a lever up and down and the generator is continuously turning over.
What about those hand train carts? the lever pushes the wheels both ways but the wheels only move forward.
@@nicynodle2 yeah, I never thought of this! Nice!
@@nicynodle2 Yeah that's true! Never thought about how they actually worked :D
Leonardo da Vinci actually designed and built one of these with a lever that would produce one direction of movement either direction the lever was pulled, but I don't know what it could have been used for back then.
crank generators usually use a full bridge rectifier, not a mechanical rectifier.
"no matter what"
Me, an intellectual: **turns mechanism around**
That was what I thought when I saw the title
What a mad lad
@Tristan Brewer r/ok
@Tristan Brewer fuck off reddit man
@Tristan Brewer wow good comeback
If you used this concept, you could turn the in and out motion of the Ocean into direct turning power for some kind of Ocean Turbine.
wow
RaHuHe, good thinking!
But again the efficiency, the amount of force required to pull that crank is much higher than regular waves
No it's not, simply place a paddle wheel on the crank. It's a crazy good idea, and with modern machining and hardening techniques, ratchet mechanism could be complex enough and strong enough to work.
Island and coastal power. Sheesh this is cheapo mass production ready for powering serious.
RaHuHe not really. The locking mechanisms on either side would wear out way too fast. Plus movement was very choppy and wouldn't be very efficient.
However this could work in a windmill turbine where the windmill can't actually rotate to meat the wind. Wind tends to be coming from a direction more constantly.
I worked in rope rescue and we had a device that did the same as yours for pulling rope around a pulley. The biggest difference was ours had two speeds, turn right for fast gear, turn left for low gear high torque.
Good idea
That's cool.
Larger yachts have similar two speed winches.
There are 2 speed fishing reels that work the same way.
Planetary gears?
Ooooh! You were SOOOO CLOSE! It was used in those old Grandfatherclocks with the Pendulums.
Normal person: WOW
Engineer: Why are you using an Axle?
What is the better way to build it?
@@robdeskrd idk, some magnets maybe?
They used to be used as mechanical odometers back in the day on forklifts, would record both forward and backwards movement, before they went to using run timers for the metric of use.
I have never seen an application where actual torque/work was being done by that mechanism though, due to the load having to be transferred through the palls.
This mechanism is used in old clock towers using large pendulums.
Tim Jalas yesssss I got it right!!!!
I've seen one on a big clock at my grandpas house. I think those clocks are called grandfather clocks..
Why are you not on top? Liked
I used to have a screwdriver with a simalir mechanism inside it.
So when you screwed it both turning it in and turning back both screwed the screw.
It saved me like 2 second a screw. Lol.
Wait so how would you unscrew the screw?
Adam Kelly having used one there is a switch on the side which locks up the mechanism or is some cases reverses it.
I have a ratchet like that. Twist the handle back and forth and the socket will turn whichever way it us set to.
where might someone find this screwdriver?
@@racecarthedestroyer7192 kobalt makes one
you should redesign this using two 1-way bearings for quiet and smooth operation
He did it.
Put these on every rocking chair and have the output drive tiny generators to charge your phone. Or go big and make old people in rocking chairs the new renewable energy source.
The clicking would drive them nuts :o)
So, have a couple of washers standing by :D
Turn off their hearing aids O_o
The best comment
I love the way you think
Ah, human harvesting. You evil genius, you
It's oddly simple once you understand how it works. The part that's tricky is there's nothing obvious about it
Simplicity is the ultimate sophistication
Seemed pretty simple to me. Both, my idea when I saw the title and the illustration. It is a really neat mechanism tho
I just watched more of the video. The second design with the rocking gear is exactly what my idea was
That's exactly what I thought when I saw it.
Lassi
Every mechanical engineer (and many people who aren't, like myself) know what a diff is... That's not the point. I meant there was nothing obvious about coming up with this particular design.
Today i stumbled across an old toy of mine: a little wagon that plays a song when you push it. The rear axle drives a music box inside, but no matter which direction you push it, the song keeps playing. I had a hard time thinking about how this mechanism works, so i finally unscrewed the bottom plate of the wagon and had a look at the gears inside. It's mainly the same mechanism as the one you showed but instead of the ratchets there were two springs attached to the two input gears that bound on the axle when turning in the "right" direction.
So here's your practical use: Make little children happy and grown up ones thinking about the wonders of mechanics! :D
TH-cam recommended me this video again two years after first watching it, and I have since found a few times where this might be useful (though some form of overrunning clutch is more likely than a ratchet and pawl). There were a couple clock options, a press (which I think even had two sets of clutches to engage based on which direction you wanted to turn the output), and a few others. Granted, most were times when you only had a small amount of play in an input angle changing (or an input oscillating movement) and a need to turn that in to a rather continuous rotation
Car mileage.. Either the car forward or reverse, the mileage will always increase
J Walker, how is that relevant?
J Walker , The speedometer cable, which drives the speedometer / odometer, comes off the output shaft of the transmission. The output shaft of the transmission does indeed rotate both clockwise and counterclockwise. Mechanical speedometers would always register a positive speed and increase the odometer; regardless of the direction of travel of the vehicle. Of course, super old cars didn't have this and would rotate backwards. It's moot today, as all modern cars are electronic.
John Gray nah bro. Its connected to the wheels.
they use a device similar to this in counting revolutions of a shaft where the shaft rotates both ways but only absolute value is needed. Both cars and ships/boats use this to estimate wear and to indicate preventative maintenance schedules.
John Gray electronics make everything way too easy 😂 nothing is mechanical anymore. Nothing.
Attach a pencil sharpener to it.. then you'll get my old pencil sharpener from when I was a kid (was smaller in size of course, but that's essentially the same mechanics used)
Those are really cool actually, I remember seeing inside one it had 3 rotating cutting 'drums' that revolved around and spun fast, creating a really nice tip without ever breaking the lead!
Hi Angus ! I am truly blown away by your work and crazy ideas !! Congratulations for being so brilliant :)
Could be used with an AC motor to ensure that the output was always in the correct direction. Then we wouldn't have to pay Sparky to reverse a pair of phases to get the rotation right. :D
It's a mechanical rectifier!
I'll tell you exactly what it's practical use is. You've probably used one a few hundred times in school if you've ever used one of those heavy duty pencil sharpeners that were mounted in classrooms. I always wondered how they could be cranked both directions on the handle, while the sharpener would always spin in the direction that sharpens the pencil.
Our sharpeners are eraser sized tho. You are the crank.
Smol boye older sharpeners were wall mounted with a hand crank. Like an electric sharpener your teacher had, but with a handle
Never seen any, and I am from a ex-soviet shithole (where some areas still have horse drawn carriage).
We only have those tiny pocket sized sharpeners
Unless you're talking about something completely different(which I've never seen before), the way a pencil sharpener works in both directions(that I've seen) is there are two "blades" which are mirrored, and only one does the cutting, but if you switch directions, the blade doing the sharpening swaps. Different concept-- The direction of the blades are mirrored, as I said, so one cuts clockwise, the other cuts in a counter-clockwise direction.
It doesn't work if i turned it backwards or we are talking about different things
I saw one used in a music box so there is no way to play the music backwards.
Thomas Hiemstra 7
Thomas Hiemstra
Could you hear the rattling?
Using a very small distance for the ratchet to engage the paul would make it nearly silent in comparison. Angus's is loud do to the SNAP action of the rigid PLA and distance it is traveling to engage its mating surface. In a music box i would assume this distance would be a fraction of a millimeter, and done with a soft brass spring to hold tension.
No, just the music
Depending on the kind of music box, if it's the metal tongs + pegs kind, driving it backwards would be impossible without damaging it anyway. Good example use case for this design.
I'm using a similar mechanism in my Lego truck model for one way engine spining when you drive it forward and backward.😅
sooo.. tell me, how'd the truck turn out? 🚛
This is a good way to make manual machines that everyone can operate "safely"
Love the pfp ^u^
It can be used in pendulum clocks to convert back and forth motion of the pendulum into the "ticks" of the clock face. It can also be used if- when you convert continuous rotation from a crank or motor to a rack and pinion- you want to keep perfectly accurate track of the output; you can tie this mechanism on to the output gear (and track the rotation degree, count the teeth, etc.) instead of a tracker on the input gear (sometimes inaccurate or hard to translate on gear slipping mechanisms).
dalsio The ratchet clicks would be soaking up the energy from the pendulum slowing it down significantly
You can tune the ratchets to have a pretty low spring force and minimize losses. Besides, I didn't say it was efficient, just that it was possible.
dalsio maybe a clutch bearing. They freely rotate in one direction and lock when reversing.
It was probably ment for that one left handed person always turning things the wrong way.
Hey, I'm that guy! :D
I would honestly use something like that.
0o0Zero0o0 like me😂
Really MM? I would think your house was full of things that fail hilariously when turned by _right_ handed users. Just because you can.
XD
YTs algorithm is earily good at finding interesting videos. This movement would be good for on a grandfather clocks main pendulum. Allowing the clock pendulum to generate a clockwise rotation only from the swing in both directions.
I feel like this could be another way make a pendulum clock with a faster update speed?
Sailboat winch. Not sure if they're based on this design or not, but the winch drum always turns clockwise. However, turning the handle clockwise is low gear, and turning the handle counter clockwise is high gear.
I’m not a sailor but for some reason a sail boat winch was the first thing I thought of. I really have no idea why.
Yeah I immediately thought of a winch. Prob just a smaller ratchet on one side so it's easier in one direction.
It can be used used in sea waves mills, to produce electricity . Wen the water is rising, the mill will rotate in one direction. When the wave goes back down, it will still rotate in the right direction. Same for moon rising water at the oceanic shore :)
"moon rising water" = tides?
funny i was thinking that lolol
Lol I was just about to comment that you could use a roller clutch like you did for your roller clutch video... then got to the point in the roller clutch video where you add the clutches to this device. Doh! Well done!
Ink ribbon Cartridges for the old school dot matrix printers had a similar gear system in it!. It was dependant on the motion of the print head to keep advancing the ribbon forward as the print head kept printing in both forwards and backwards at the same time that is the first time I encountered this type of mechanism.
That's really neat! Thanks for sharing 😀
@@MakersMuse NP!
Ahhh the perfect mechanism for my hamster to power my computer
Sanction bahahaha
Power a Kali Linux system? >.>
problem is generator generates the power rotating any direction so you can connect it right now without this mechanism
Genius
Sanction that was my first thought for some reason too
Mind? Blown
Turn? Clockwise
Hotel? Trivago
XD
goddamnit
Made me laugh
Lol ( laugh out loud ) out loud!! 😂😂👌😎🤪
just found that trivago its german.... I though it was spanish as trivago seemed similar to "tri - vago" which would mean something like "three times lazy"
I remember seing a similar mechanism in an old Popular Mechanics Magazine from the 1960s. It was used in a hand driven boat propeller. However, instead of a crank that was turned round it had a lever that was "pumped" up and down, and the propeller rotated when the lever was moving in both directions.
I've not examined the contents yet to see exactly how it works, but we acquired an old "fisher price carousel record player" (look it up) for our toddler: the hand crank functions in this manner.
(Can't wait til he's older so we can get our geek hats on and do some 'practical mechanics'...)
This is incredibly cool, Angus. I'm really going to think hard on something this would be awesome for!
It's not QUITE as loud as your giant ratcheting noise maker, but maybe something like that :P
Prank a friend and make their car only go forward
You could make something 2 speed by having the gears at different ratios, then if it's driven by an electric motor switching the direction will change output speed.
Although to do that with this gear design might be tricky, you would need to use a planetary gear on one of the ratchets so the gearing would be different without changing the gear size on one side as that would not allow it to connect to the output gear as both gears on the crankshaft have to be the same size.
a music box withoit fixed crank direction? This is what this was used for in the past
Maker's Muse
To me, one application is glaringly apparent: hydroelectric generation from tides.
An artificial tide pool, bidirectional water flow, could turn a wheel in either direction and rotate a secondary mechanism (eg; generator, pumps) in a mechanically uniform direction.
You make the weirdest gears and devices, i love it
It's my thing lol :) thanks!
Maker's Muse haha np, its amazing that you can make these complex moving models, and i have difficulty modeling a piece for a fitbit
Very clever, thanks for uploading. One of uses I can suggest harnessing waves energy
Used in those old tings in a can that makes music. Music is created when a round object goes past different lengst of steel strings and makes then resonate with a giving frequency. When rotated in one direction the timed pins on the round object trigger the strings in order to make te song. The 'crank' can be turned both ways because the user doesn't know the inside because it is in the can. The round object has to turn in one direct for the song to work obviously.
>attach input to pendulum
>attach output to generator
>no more power bill
Genius!
You would still need to go out and swing the pendulum.
Maybe in a tidal water generator?
@@MrJmparanu
Too bad the tides take forever to come in and out.
debblez Better than a pendullum, why not the bouncing of the sea waves?
time to swap the rachets for one-way bearings!
Indeed! Shouldn't be too difficult to adapt it.
bigfilsing how does a 1 way bearing work? I've never heard of them
Isgolo
Here is a great animation showing how it works, it's in a promotional video though. The actual animation starts at 50 seconds. th-cam.com/video/QjR7dimpSJA/w-d-xo.html
+isgolo, it's friction based: balls are placed in slanted slots tangent to the trajectory, and springs push in the opposite direction of the desired movement (toward the narrower side of the slots) ... when you apply a force opposed to the springs the balls lift a little and allow the mechanism to roll ... in the reverse direction the friction is too strong to overcome.
my thoughts exactly.
This would definitely be a good device to prevent user error or user friction. In some industries, the user “experience” is of the utmost priority. Having the same output regardless of the users input (as long as the user is turning in one of the directions) is a key to this. One application in this I can see is a tool that can be used from the front or back as well as left or right hand.
Absolutely incredible
An interesting application for this sort of gear would be something like a wave generator. Use buoyancy and mass in a lever floating atop waves to drive the gear and axle through a gearbox connected to a flywheel which would then connect to a turbine. I'm a physics major, not sure how much energy can be stored in a flywheel, but I'm sure changing gears would allow the system to operate at both low and high amplitude waves.
Of course, that utility doesn't remove the mechanical limitations of the ratchets. Such a system would probably operate pretty much constantly in open water and would require frequent regular maintenance to address wear and tear on the ratchets.
This is neat! Possible it was used with a pulley at one point for running buckets in a loop in a mine or something (I.el can crank in either direction, but buckets always raise in one direction and return empty on the loop, but gravity works as a break to keep them from falling back under load)?
Practical Printing actually, that is a good idea.
However on one point the load would change and if it is too great it will overcome the rachets and the bucket would fall (unless there is a counterweight).
It would be grat if you make sure that the buckets empty before raching the top of the loop and the rachets are oriented properly
Usually worm-drives (sometimes called screw-drives) were used to prevent loads forcing mechanisms into reverse!
there totally is a winch on sailboats that uses a simmilar mechanism. its a two speed fast one way and strong the other. uses only two drumms and friction instead of teeth and no ratchet. too bad i cand find a picture
steffankaizer google boat ratchet crank
This makes a lot of sense.
Awesome design!
A wheat milling machine powered by water - although not common, some streams will reverse flow during seasons.
It's used for making peace. Both sides constantly pull against each other, one side pulling clockwise and the other counterclockwise. However, the whole time they are actually making progress while fighting each other. It allows people to have their little squabbles while they're still both right. This device is a metaphor really, many times when we're arguing, we think that we are right and the other side is wrong when often both sides are right, they are just seeing it from different perspectives. This comment went on longer then I meant it to.
This is the best answer so far.
i like this answer for the same reason
🙄
Drugs are nice aren't they? Lol I mean, nice metaphor but why?
But they're never fighting.
Only one gear is enganged at once.
#IamDatBoi
In Soviet Russia, it turns counter clockwise
*GENIUS!*
Underated comment
You slav
Hahaha. Even my Russian friends laugh when I say things like that.
@@jathmarjames855 because this is true
Just in case anyone is interested, I commented on this three years ago, stating that this was part of the Constantinesco Torque convertor. I was wrong. Gogu Constantinesco used a device similar to this, which does the same thing, but is much thinner and functions better. He called it a "Mechanic valve". This is a topic well worth investigating.
this mechanism only turns clockwise
mirror: I'm going to end this mechanisms whole career
For when the workers handling the crank just can't remember the right direction :-)
But jokes aside, I'd think it could be useful in tidal power plants. Water going back and forth, translated into a consistent motion.
I reckon for tidal plant I'd let the turbines run in both directions and do the rectification electronically.
Funny thing is tidal plants don't seem to be a solved problem - there've been lots of suggestions but none of them seem to have taken over the market.
It's not like gas, coal, solar, wind or nuclear where there's technology deployed en masse that works well, even if better stuff is in development. Tidal power never seems to get out of the proof of concept stage.
One of the simplest examples I've seen was to have the turbine blades pitch pivot freely at leading edge and the trailing edge stops at an angle in either direction. Maybe not as much efficiency with symmetrical blades, but the driven wheel would always turn the same way regardless of the direction of flow.
One (water) wave generator that I saw used the air in a vertical pipe (lower half in the water) and the resulting airflow drove the turbine; the impeller was so designed as to turn in the same direction whichever way the air was flowing. There were no moving parts on the impeller, somehow the fixed shape of the blades made this happen.
I used this very mechanism back in 1990 for a practical purpose: A pair of foot pedals traveling along parallel tracks, connected by an oval loop of bicycle chain that went around a pair of bicycle chainwheel sprockets mounted at each end of the track rail structure. One of the chainwheels was connected to the input shaft, and the output shaft had a propeller on it. I used standard BMX bicycle freewheels, and the bevel gears were custom fabricated from a hard aluminum alloy.
This linear, reciprocating pedal mechanism was used to propel the University of Washington "SeaDawg" human-powered submarine in the Second International Human-Powered Submarine Competition. It was actually a very efficient drivetrain overall. UW came in fourth place out of about 34 teams.
I hadn't seen the mechanism in any text (that I remember), but derived it myself, thinking that I might possibly have been the inventor (but doubting it very much). It's really okay with me that someone beat me to it by centuries.
I NEEDED AN IDEA LIKE THIS THANKS!
Driver: "goes reverse"
Also Driver: What the f-
*Crashes*
Instead of a ratchet, use a precision one-way sprag and you have a non-clicking one-way gear.
True that! Might do an update.
Nice, I was thinking about a sprag though the whole video
There is a silent wrap around spring ratchet type system
Eriamjh 1138 I would love to see that improvement!
Wow! That is one of the coolest 3d printed mechanisms I have ever seen! Good job!
excellent work
Designing it with one way sprags instead of ratcheting mechanism would make it quieter, stronger, and more efficient. And I mean the dog tooth design not the spring and roller clutch.
Clocks. Maybe that's what it was originally used for.
The pendulum rocks back and forth turning the gear by a certain amount each time, simulating seconds.
This was my first thought as well... Clocks must always rotate in one direction, which is, well, clockwise, duhh!! Lol, pendulums are just part of it I'd imagine, I'm sure there are many more complexities which we're not aware of at the moment... who knows, just my two cents
My brother used to have a bike that would always go forwards no matter which way you pedaled.
It must have been using this mechanism because it made the most awful clicking noise when driven.
TheMaskedKid I used to have a bike that had reverse system on handle bars. When you turned left the bike turned right. It was freaking impossible to ride at first because of the balance.
Well done! Maybe a one-way ball bearing - or rather two - would get rid of the ratchet noise and reduce the wear.
Getting rotation from wave motion as suggested earlier sounds like a good idea. Connecting it to Granny's rocking chair to drive a generator which in turn drives her television might be another.
Keep up the good work
i have a similar set up in my screw driver so i can rotate the handle either CW or CCW and the drive shaft rotates in one direction. i can manually remove screws in ICB (Integrated Circuit Board) just as fast as mechanical with out the concern of over tightening and damaging the ICB
It's like a mechanical rectifier
William Lohan yeah, mechanical fullwave rectifier,sort of....
@@joeelias2515 you meAN DA *FULL BRIDGE RECTIFIER!!!*
Some one has already said that pal
it really does... the pulls are the same function as the diode
*NOT* a puny single -diode- ratchet rectifier
It is used in some agriculture mechanisms, where the tool has to turn in one direction no matter if the traction goes forward or back. Such as a hay collector.
It could be used to convert wave motion into uni directional movement of a drive shaft ... to power something
The pawl and ratchet could be replaced with a ball pawl which would make the whole system quieter...
I *really* like this sort of video. 3D printing has so much potential! Static objects don't make it justice.
Chrysippus 3D printing is definitely great for something like this. For an actual functional device, you probably want to use other processes. If manufacturing out of plastic at high production volumes, injection molding is more economical. You can also get better resolution / finer tolerances with subtractive machining if that is critical, as is often the case with gears.
Brain Mind oh sure, I wouldn't use this for anything other than educational reasons. But simple things with gears are sometimes printed and used. Recently Applied Science printed pipe fittings that handled "like 15 psi" and despite being static, it's amazing what can be done! (was resin printing but still)
Chrysippus I agree that it’s amazing what can be done with 3D printing. Sometimes I just see people getting a little over-exuberant about it like it’s a replicator from Star Trek. Not saying you were, just providing a counterpoint.
As you suggested, converting a pendulum into clock motion seems obvious. But I also see it as a way to turn a generator from natural sources. A wave generator, a float on the ocean levered back to the beach, as the water rises and falls it turns the generator in the same direction. I remember seeing details of a silo on an ocean cliff, a tall tube with the bottom in the ocean, and the top closed, with a fan in a vent. As the ocean rises and falls it blows air up and down the tube, turning the fan in one direction as water rises, and the other as it falls, generating electricity.
Came here to say this. This could convert linear vertical wave motion (water waves) into uni-directional rotation. Just attach a weighted float on a vertical guide (rail or tube) and get cranking. I think you will lose a lot of efficiency relying on air compression though.
Andrew Wrobel dude it's an awesome idea :0
Andrew Wrobel I agree your idea simplifies the concept. The towers with fans was actually built in China, so not my idea.
One thing that would be useful for is the "wind in the trees" driven work unit converted to a electric generating device. In the old days pioneers used ropes and pullies attached to tall trees swayed back and forth by the wind to power large hand saws to cut wood. Just replace the large hand saws with this device with a gearbox attached to get higher rpms to a generator and you have a renewable electricity supply. Make it out of tungsten and cobalt steel parts, enclose it in a housing filled with oil and it will last for years.
In my capstone project for ME in college my team and I were designing a power generation device that was powered by sea waves. In our design we had a buoy and it was attached to a gearbox that did exactly this. No matter which direction the buoy moved, up or down, the output was always in the same direction. I believe the gearbox that we used had clutches inside but it did the same thing.
So... I can imagine it being used on a generator or something which relies on a paddle being pushed back and forth.
Actually anything being pushed back and forth really, as the instant engage would keep the output moving really quickly.
Maybe one of those Man-powered Train beds?
Eir Foxtrot it is not cost efficient. But yes, it could be used for that.
I suppose i was imagining one of those huge Wave Power Converters, where efficiency is traded for reliability
Eir Foxtrot oh like changing currents.
i was thinking the same, Nowadays the same result could be GENERATED, using electrical rectifiers instead mechanical but back in the day this would be the go
Put animal in wheel, no matter where they run you get clockwise
really good application
Fizion
Animal cruelty lol
dman morgan riding horses?
*ANIMAL* *CRUELTY*
when does a hamster stop running you could charg you batteries with you pets hobbie lol
Aguamelon Gamers yes
Me: trying to read the comments to see what other people think
Also me: I’m not an engineer, what the flip does that comment mean??
I have a strange feeling a main character out there needed to see this
He used free hanging arms, you use 3x spring loaded arms.
Redo it matching the original design, probably be a lot smoother sounding.
still wont be silent, and may be more prone to failing to lock
Not silent, correct, but A heck of a lot better.
As far as locking, simply looking at it, I would agree with you.
However I had a early 1900's manual drill press that used a non-spring loaded ratcheting arm similar to this one, it grabbed every time.
I've probably got no idea what I'm talking about but would that not have the drawback of being slower to reengage when changing direction as the ratchets fall back into place rather than being pushed back into place with the elasticity. Also, at much higher speeds of rotation am I wrong in thinking that the ratchet might not re-engage at all with gravity taking too long to push, the ratchet back into place and missing the gap between the teeth, therefore bouncing off the gear teeth? Again, probably got no idea what I'm talking about but just a thought.
No, your probably right.
But it doesn't seem this was made for any high speed application.
True
I wonder if it could be used on a simple flat wind turbine? Spinning a sail in either direction could drive a water pump in the right direction for example.
No, because of wear, friction and very bad power transmission. You use the ratchet mechanism to transmit the whole force. The "big" spur gears are only show.
If you use plastic, it obviously wouldn't last, but considering the ratcheting mechanisms in ratcheting wrenches don't break or wear out all that often unless made of trash materials or are otherwise under-engineered, it could work. Only thing you'd then have to contend with is the constant noise.
Then again if you use a high weight gesr lubricant and a well designed housing, the wear and noise would be at a minimum and there has to be a way to fix the bevel gears to the axle and still allow free movement. I'm thinking some bearings press fitted into the middle of the gears and then affixing those to rhe axle to fix the loose design. Or would that solve anything? Thoughts?
It could’ve been used in a clock. Since at one of the main ways of powering clocks was a circular windup, having the direct output go left and right, meaning you needed a way of converting the continuous change in direction to a only one. So it can be used to move the gears for the clockwise direction.
Would be used for a one-way screwdriver, my grandma has one in her toolbox
Its literally a drive differential
@@swiji7198 it isn’t a differential drive
A differential sends different amounts of power to different wheels depending on conditions while this just take an input on the horizontal set of gears and translates it into a permanent one way rotation of the 3rd gear
it can be used to count (mechanically) a total distance for a driving car.
So you don't drive the counter backwards.
Not this Particular design, but similar mechanisms are used in automatic mechanichal watches for winding with the motion of the hand
Xris Kava : Agreed, this was almost certainly used for an energy storage mechanism in some way. Might have even been used in some mechanical clocks at some point.
These were my thoughts as well, whatever it was used in, it was important that it only be wound one direction, this type of mechanism makes sure it cant spin the wrong way.
I do watch repair, so that's the first thing I thought of. He should check out some watch automatic unit and then 3D print something silmilar. They are slimmer than this differential looking thing he made as well.
I think there was a mechanism like that in a Lego Technic truck I had as a kid. I have no memory of what it's function was, but I remember playing with it and being fascinated with it.
The mechanism might have been used in pendulum clocks as it converts the back and forth motion to a clockwise movement
Nathan R.
I mean, they make sounds too.
The escapement on nearly all clocks simply halts clockwise motion at regular intervals. The point of a mechanical clock is to release the power of the mainspring or weight at controlled intervals -- power feeds into the pendulum, not the other way around.
Have you ever seen the 'South Pointing Chariot' mechanism?
Two wheels in a cart arrangement and a shaft with statue out the top of the thing.
Roll the cart in a straight line, the shaft doesn't turn.
But when you roll the cart in turns and pirouettes, the shaft rotates to maintain its orientation relative to the table.
Think of it as a mechanical compass, always pointing South. Or what ever direction you like.
Not too many gears...
Essentially a mechanical "difference"
Brilliantly done!
You could use sprag clutch bearings instead of ratchets?
Tht would stop the noise.
It's an example of how an open differential on a car works. When one tire loses traction, power output is directed to the other wheel and the vehicle keeps going under the tire that has the most traction.
With a lot more moving parts, it's also somewhat related to a heavy duty CVT transmission. :)
In the past the lathes that were used had a spring (like a tensioned bow) that was wound around the work piece to give it a back and forth rotation every time you engaged with the foot pedal this could be useful in that application to keep the work piece engaged when you foot is lift on the pedal
Hmm, maybe you can use it for an airblower with a footpedal. Insted of the handel you have a flywheel with a footpaddel connected.
It’s a mechanical AC to DC converter
wpherigo1 said the electrical engineer
That actually sounds like a fun/useful teaching aid
Its a FULL BRIDGE RECTIFIER!
Caspar Nuha , they existed before vacuum tube or semiconductor diodes. According to Wikipedia they were pretty efficient as well. Your vacuum cleaner probably has one in the form of an ac/dc motor. Chances are he looks at car transmissions as impedance matching devices as well. ;)
Lol, yeah, and bicycle gears, axe handles, audio horns, wrenches, even wheels themselves. All impedance matching.
I reckon that it was used for something simple like a wheel that only moves forward, no matter which way the volunteer turned the handle.
Brilliant!