Invention of Car Wiper - A story of engineering Brilliancy
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- Опубліковано 5 жов 2024
- Did you know the modern wiper technology we all take for granted was born because of one man’s flash of genius? Professor Robert Kearns, who invented this efficient wiper technology, took inspiration from the human eye. The wiper technologies before his were pretty bad and obstructed the driver’s vision. Mr. Kearns's wiper technology was so original and brilliant that the Ford company tried to steal it. Let’s explore the details of his brilliant invention.
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It is confirmed, Prof Kearns was the first to come up the idea of intermittant blinking. www.newyorker.com/magazine/1993/01/11/the-flash-of-genius
It is not confirmed. Your linked article does not say Robert Kearns originated the idea of intermittent wipers. It does not say Kearns was the first person to work on this invention. It also does not say Kearns was the first person to receive a patent for intermittent wipers.
I tried to post some web addresses here, but UA-cam blocked my posts. Google searches will provide a link to a US patent near the top of the search results page for the patents noted below.
The first US patent for am intermittent wiper system was awarded to Raymond Anderson in 1923. That was four years before Robert Kearns was born. Do a search for “Raymond Anderson patent intermittent wiper 1923”.
An engineer named John Charles (JC) Amos received a US patent in 1961 for an intermittent wiper system that utilized an electronic control. Do a search for “Amos patent intermittent wiper 1961”. According to your linked article, Robert Kearns became inspired to start working on an intermittent wiper at the end of 1962. And in fact, his patent for an electronically-controlled intermittent wiper was patented in 1964. That was three years after the patent awarded to JC Amos. Do a search for “Robert Kearns patent intermittent wiper 1964”.
I have a question. I want to know how defogger works in car. In depth definition please❤️.
"The reason we are unconscious of our blinking" - immediately becomes conscious of my blinking.
Don't forget to breathe, too!
@@rob6850
Help me i can't breath now...
Wow, what a dumb comment.
and, how my eyes suddenly feel so dry.
@@kenmore01 thanks, I just blinked 12 times
Every time I watch one of your videos, my respect for engineers of yesteryears goes up by another notch. Thanks for telling us about the geniuses who behind the things we take for granted.
Whenever I see such kind you videos, i become sad for engineers and scientists who had such a genius mind to invent such things but society does not gives them much recognition they deserves.
Engineers can literally wipe everyone else off the planet if they wanged to
Watch the movie "flash of genius" to understand the whole story. Its amazing to see how much pain he endured to finally win the legal battle where interestingly he represented himself against ford's lawyers. This thing broke his family, and marriage too.
Can't find anywhere
@@blackheart6897 available in prime
@@NishanthSalahudeen It's not available now
Was looking for that nMe
6:31 If the cam mechanism involves worm gear (input), then I'm wondering how can the inertia of the wiper (output) drive the cam mechanism.
Yah, you are right. We used worm gear assembly in the inital two designs. In fact these designs were not Prof Kearn's. Prof Kearn's wiper did not have a Worm gear assembly. We forgot to state that when we moved to the actual design.
Alright! Thanks!.. btw love your videos!
Same question I had in my mind
If memory serves, the other significant thing to come from this was the 555 timer chip, on of the most versatile and common controller chips on the market to this day.
Haha. In high school the 81 Hilux my Father owned had a broken intermittent wipe. It had a mechanical delay mechanism with a small 12v motor, not much larger than the kind used in toy cars, that drove a worm gear, which activated a copper contact, and it had all rusted up. I fixed it by... building a 555 timer circuit with a TIP31 doing the actual switching, if memory serves.
Yeah he talks about 555IC
Video talks about the transistor circuit activated by switch as some bleeding edge genius. Yes, it's clever. But I've seen thousands times more impressive than this to be considered genius.
It's unbelievable how complex but simple the technology is we take for granted. Especially before rain sensors were a thing.
There is a theory called Johnson, Kendall and Roberts (JKR for short) theory in soft material contact mechanics in the field of solid mechanics. This subject is taught in the undergraduate mechanical engineering courses. This extremely accurate theory of a soft compliant material coming into contact with a hard and smooth surface under loading is explained in detail with mathematical formulas. The professor who taught this course in college told the class that the theory was developed specifically at the behest of big car companies to solve this exact problem of car wipers made up of soft rubber (compliant) making contact with a hard smooth surface (glass).
Some car wipers from the mid 20th century weren't electrically powered at all. They were powered off the engine intake vacuum; when the accelerator pedal was depressed (such as when driving uphill) the wipers would stop operating altogether.
Since I am 72 years old I remember cars from my childhood years that had windshield wipers powered engine intake vacuum.
Very informative. It goes to show how the big companies can try to bully the little man by tying up issues in the courts indefinitely to exhaust the little man's ability to fight.
That's exactly what Sears did to the guy who invented the bionic wrench (Dan Brown).
Glad Sears is dead, they deserve it :)
I like the lesson you're teaching, but I'm annoyed that the things you animated weren't mechanically accurate. At 2:10 the animation showed impossible movements. In fact, none of the linkages you showed behave that way, with the wipers moving without being mechanically coupled to the movement of the linkage, sweeping a different angle, or in a different direction. 2:10 also doesn't show any way for the linkage to follow the cam follower back. You've modeled far more complicated things accurately; I am disappointed that this one gave up on accurately representing the mechanism of these wipers. Even the first link in the linkage shown from 2:10 onward is visibly stretchy (the first one from the cam follower). What's up with that?
The "lesson" wasn't about correct linkage design, it was about the invention of wiper delay...
Chill dude, everyone got the idea lol
Yeah i was about to say that, representation of the mechanisms is like the main thing of this channel, and like you said, he did far more complex things, it's weird.
Edit: I realised this is probably an april fools video lol.
All that and you didn't mention the modern GPU controlling the wipers?
@@jeb123 sop
2:53 my braincells died trying to understand the physics behind wipers moving completely out of sync with their support shaft 😷
lol
The video was supposed to be up uploaded on 1st April...
ikr???
Absolutely hilarious how electronic wipers are shown as being controlled by a GPU
That's exactly what I was thinking xD
It funny though lol
And With ! C.B s ! And T.D s Too !!
Good eye, good eye 😂
you mean you don't use GPUs for your wipers? gotta wipe the rain in 120fps
7:03 never knew wiper blades were powered by a gigabyte RTX 3090
the true reason why gamers are lacking of graphic card
that's what i noticed too...
Thats a very interesting “timer circuit” they have there
The old style wipers were not that bad. I remember vacuum-operated wipers, the wipers would speed up/slow down depending on the speed of the vehicle.
It always cracks me up on how people come up with such idea.
Imagine flooring your throttle when trying to overtake a vehicle only to find your wiper stop working because your manifold vacuum is gone.
Acceleration or Visibility, you can only pick one.
@@rommysoeli I remember riding shotgun in a Model T and having to manually crank the wiper for the driver lmfao
@@robostyle9773 how do you crank it? 😂🤣🤣
Old wipers makes me remember the good old days!!!
Old wipers makes me remember the good old days!!!
06:33 How can the momentum of the wipers be transmitted in reverse direction to the motor through the worm gear? This doesn't make sense for me
hmm now I think about it don't make any sense either.
Even 2:52
It's more likely that the momentum of the motor it's self causes it to skip the dwell time. Manufacturers could even add a small flywheel to the motor if it were necessary for tuning it in just right.
ah it's all an april fools prank
Standing Ovation For the Geniues Profferssor Robert Kearns......Respect from INDIA.
Professor Robert Kearns is a genius and a legend
I recommend the movie "Flash of Genius" with Greg Kinnear.
It tells the story of the court battle.
You'll never trust a big company again after you see that.
This video is based off the movie. In real life he was a conman. But a successful conman I guess...
Can you please Send the link
@@shouryavermaelex19kanpur7 Why would anyone care about a fake story?
*I LIKE how the lad always says "HOWEVER".*
I love how you take us on the journey of discovery. Thank you.
I’m surprised that this video didn’t mention the really good movie made about Robert a Kearns played by Greg Kinnear. Good but sad with his legal battles for so long. None the less this is another great video on how stuff works. It’s also amazing to me how no one else came up with this, unless Robert Kinnear developed one of the circuits used. Maybe it was just at the very start of using circuits?
Most people see a problem and complain. An inventor sees a problem and finds a solution.
Exactly... That's the mentality of an inventer
now how can I fix the problem of lesics' videos being low in quality these days?
Seriously, the new reader sounds awful, the videos tell avout the inventors rather than the innovarions, the animation quality has dropped and the videos contain less facts.
And Usually ! NEVER ! Finds ! It !
Don't look at it as a complaint, rather it's an opportunity for innovation.
@@laurisikio Make your own videos
Simple observation can lead to amazing inventions
Point to be noted
Wow, back-2-back two videos
This shows your hardworking nature
KEEP IT UP
😊😊😊😊😊
These things are usually well animated, but in this one the motion of the wipers bears little relation to the motion of the mechanism driving them.
The power from motor goes through worm gear, than how should wipers inertia will rotate the cam.
As I know worm wheel arrangement can only work in one direction.
7:02 : I have a RTX 3090 in my car ?
Time to open the dashboard
u might wanna look at center of steering wheel too:-)
I must be brilliant, because in 1984 after getting my first car I didn't know about intermittent wipers and my car didn't have the technology either, I kept turning the wipers off to allow time for more water to collect before turning them on again so I didn't have to hear the scraping noise and see smudges. I kept thinking, "if only there were a timer that would do this for me." This all occurred to me without looking at someone blinking.
7:03 "The dwell time can be accurately measured and changed using timer circuits and microcontrollers." **Inserts RTX 3090**
If the wipers continue and skip any resistance while the cam is active because of inertia, how does this mechanism ever deactivate when the wipers are slowed down, except for the wiper being turned off completely and started slow again.
Prof Kearns was not the inventor of the windshield wiper. He invented the " intermittent wiper system" A woman, whose name escapes me, invented the windshield wiper many years beforehand.
Mary Anderson, an inventor, was the first person to create an "effective windshield wiper".
No she stole it from him in 1903 the animation of fifties is just animation metaphors but it was really 1903 she stole it a man in Germany in 1903 made them too she stole most women can't invent squatter less than one percent can others influenced by men fewer made white out coffee makers and bull dog paperclips but same number quarterless than one percent
I've never thought car wipers could be soo interesting. Well, the more you know.
Forget about comments about historical accuracy and all. I think you did a great job of animating the mechanism and showcasing it to us. "An electrical circuit timed/controlled by mechanical switch" - great idea indeed!
The movement of wipers (silver) and shafts (black) make no sense in the animation. Also the motors rotation speed is very irregular. This does not explain the design well. 0:04, 2:12 ...
Early designs for the windscreen wiper are credited to Polish concert pianist Józef Hofmann
There was a documentary movie about Professor Robert Kearns, and his invention of the intermittent wiper circuit he invented, how Ford stole his idea, and eventually every auto industry today uses his idea. The movie "Flash of Genius" tells how he went thru hell trying to sell his invention to Ford and eventually they stole his idea. He eventually won a lawsuit 10 to 12 years later against Ford as well as Chrysler and GM who eventually incorporated the same intermittent wiper idea in all their cars and trucks.
Great Engineering!
It was not expected from Such a MNC like Ford
What a detailed animation, even duracell battery is present as it was back then
Professor Kearns may have been a genius but his hypothesis about why our blinking does not interupt vision is wrong - it is not related to the rest period. Studies show that the brain seems to have a far more complex way of dealing with the 'off' period which occurs as the eyelid sweeps across the visual field. The most likely answer is that the brain 'knows' that the eyelid is in the way and either invents an image based on what occured just before the sweep started or simply remembers what existed before the sweep and holds that image during the 'off' time.
It may also be related to the microsaccadic which is continually occuring in our eyes. These small eye movements are essential for the brain to be aware of what is happening in the visual world. Our retinal cells fatigue extremely quickly if they see a contiuous input - which is why if you hold your eyes in one spot for any length of time the image will start to fade. In order to overcome this the eye constantly performs small movements in order to refresh the signal falling on any given neuron. However, we are unaware of this movement becuase our brain integrates the signals over time and smoothes what would otherwise be a jerky image.
The problem of the eyelid sweeping across the eye may be resolved by the brain using a combination of all of the above but, either way, Prof Kearns was wrong.
I was going to reply the same thing. Another theory is that your brain shuts off the visual portion resulting in a "no image" instead of a black image. Since there's no input at that time, the result is ignored and you don't notice it.
Prof Kearns was wrong, but the result is the same.
Brain: Good attempt👏
But I am more intelligent than you think!!!
I hope he was fairly compensated and not just court costs and lawyers' fees.
He won $10M from the Ford suit (they offered a settlement of $30M, but claimed no wrongdoing so he rejected it) and another $18M from a similar suit with Chrysler
@@adamw5803 Thank you for the 411
The wipers in the 1955 Chevy pictured would actually rotate in opposite directions, as would those most cars before the 1960s.
Another big improvement in car windshield wipers was the change from using engine intake manifold vacuum to run the windshield wipers to an electric motor to run the windshield wiper. Those engine vacuum powered windshield wipers had a big problem. When the driver was climbing a hill and had to step on the gas, the windshield wipers would slow down to almost a full stop. Then when the driver let their foot off the gas pedal the windshield wipers would speed up dramatically. An electric motor eliminated all these speed variations.
Blinking definitely does affect you. Not in every day situations but one way to see the affect of blinking is by sparring in boxing.
A lot of people blink or close their eyes when they see the hit coming and that makes it seem like the punch is incredibly quick. If you actually force yourself to keep your eyes open everything becomes slower and more readable.
If you do in boxing you probably do it in every high stress situation.
Blinking fast still probably would be easy to get used to. Try it. If anything, the sensation of the actual eyelids moving will be what will bother you, rather than how fast you blink
Anyone would have thought about it in today's world.
😳 wow, even without microcontroller . This is really amazing
Using a capacitor to achieve delay is electronics 101, weird that the video appeals to genius. It requires only basic understanding
Damn something so simple we all take for granted has so much thought and genius in it. This guy was cool 😎
7:03 ahahah Nvidia GA102-300-A1 by Gigabyte ... GeForce RTX 3090 for car wipers :) You made my day mate !
Just think, Tesla has patented a rail guided wiper system. Simplicity to complexity. Imagine what snow and ice will do to this California based design.
Think I trust Tesla engineers on this...
@@danm4320 most Tesla investors do, that is why Tesla stock price is so abnormally high. Sooner or later common sense and simplicity prevails.
@@siyanhe4879 that's not how the stock market works...
What is a rail guided wiper system?
Hello sir
Thank you for your support
Can you explain how auto stop function is controlled by wiper motor ?
Wow great information about viper
Umm, I think you got the wrong animal...
2 animated video in 1 day great man
Expecting more technical works behind automotive industry... Continue...
brilliant engineering❤
You lost me with the capacitor. When the capacitor fully discharges, the circuit would be electrically in the same state as if it didn't exist in the first place, just a few seconds later. Is part of the circuit missing from this explanation?
Yot’re forgetting the resistor - it wasn’t there in the original circuit and it’s basically bypassing the switch and providing a path to forward bias the transistor when the cap is discharged far enough
Cool fact was that my great grandpa or maybe my grandpa (I can't remember which one) actually helped and had a pattent for a variable speed wiper. I don't know what kind I would have to ask my mother. I believe that he worked for GM once again I am not to sure on specific details details
Well congratulations he invented the windshield wiper! Was he black?
But windshield wipers these days DO run all the time. At least, the have the option to run all the time in heavy rain. Or you can set them to intermittent for light rain. But my point is, it doesn't seem like vision is obscured too much when you have your wipers on high and they're going back and forth constantly. I think having that would be preferable to your windshield being covered in water for 50% of the time you're driving while the wipers aren't moving. So I don't understand the logic of the previous wipers being inferior to Kearns' wipers because the old ones ran all the time and obstructed the view of drivers.
6:20 Kind of works like the pistons and counterweights in a combustion engine to conserve momentum and keep the engine running
Not to mention the flywheel.
I really need a car wiper to save the earth from erosion
زبردست جناب
very nice explaination sir love you
Won the case
Proceeds to blink in slow motion
7:03 did any one notice graphic card 😂
I think most of the inventions like the viper are based on the human body and my idea is that the human body is the world's best art and creature and if we study more about it we can make inventions that can revolutionize the world
The Real Fight ! Is Based on ! Bankruptcy ! And other !.Mental ! Assurshines !! At play here !
The human body isnt even close to perfect.
You can choke to death by eating food.
@@jonasstahl9826 Does ! Anyone ! Know !. FIRST ! AID ! ANYMORE !??
@@jonasstahl9826Not to mention things like back problems due to walking upright
Very informative ....
Lots of Love From KASHMIR 🕊️
This is great! May you make video on car electrical system and wiring. thanks
7:03 thats an interesting timer circuit
Are you sure that isnt a Gigabyte Nvidia RTX 3090 graphics card?
RTX 3090, the letters on the GPU match it
@@AlfiesFuntime oh ok
3:39 "current flow stops in the circuit" yet the bulb is still on.
I like how the movement od whipers at 0:40 doesnt match the four bar linkage
Really brilliant engineering👌👌
Thank you lesics. My first video on your channel is based on Hover Dam. I Love it so much. Keep it up dear sir. My father is also a civil engineer. Hope one day you'll achieve your Red Diomand button from UA-cam channel soon 💐. Love you Sir from India. Where are you from? I don't know, sir?
Oh yes the ones that never matches the rain, and needs continuous adjustment...
thanks for your hard work
nice Duracell advertisment, i subconsciously went to the supermarket and bought myself a pack of Duracell 😂
This channel make history in UA-cam for understanding our world in a simple way
wipers were actually invented by polish pianist Josef Hofmann, who was inspired by a metronome ...
other guys invented them later ...
Wow, absolutely Genius.
(pnp junction)animation video should have shown in our teenage we would have better understanding this part. Thank God now days new gens has got @lesics for better understanding 👍
Very informative thanks
I can never figure out how the ship hms warrior telescopic funnels work and the mechanism behind it i would love to see a vid on this ps i love the vids on this channel
Thanks!
The linkages to the mounting points to the blades aren’t connected. The blades are moving independent of the motion happening from the motor and linkages.
Please make videos on how exactly the haptic technology works.
Absolutely good video but Some confusion!! Wiper motion not accurately match with driving linkage
Continuous wiper blade movement has never been a problem for me.
Thanks
So, at the base of the wiper, there's a opposite direction mechanism inside the pivot? This graphic is driving me crazy!!
Jai Hind 🇮🇳🚩, awesome dude, your videos are 🤩🤩💞, keep creating, we support you💯💯🤘👍
Very nice, really liked it.
Please do a vedio on automatic opening home hinge gates
ok
I noticed in my car that wiper speed (full or intermittent) can increase the faster I drive. The speed is slightly slower at 60 kph compared to 100 kph. Does this mean it now also connected to speed sensor ?
thank you sir
They need to bring back vacuum operated wipers
What I heard in this video: " Profesor what's his name was extremly genius!!!" 20 times
Beautiful ly explain ed
How to vary the dwell time? well just make the motor spin faster(or slower)
Beautiful animations.
How does the wiper momentum overcomes the limitation of worm-spur gear one directional transfer of force? since we know they rotate only by the worm gear and not the opposite