Three Pin Lewis Demonstration
Ойын-сауық
A three pin lewis, also known as a dovetailed lewis, St Peter's keys, or a Wilson bolt fits into a dovetailed seating in the top of a building stone. It is made from three pieces of rectangular-section steel held together with a shackle, allowing connection to a lifting hook. The middle leg is square throughout its length, while the outer legs are thinner at the top, flaring towards the bottom. Held together, the three legs thus form a dovetail shape.
They are now illegal in the UK but were still in use when I started my career.
Пікірлер: 323
No idea why youtube showed me this video, but I watched it regardless. I do no feel my time has been wasted.
@billrosenstein
Ай бұрын
Not or now?
@davidpile2576
Ай бұрын
@@billrosenstein bit of both.
@baxterraccoon6832
Ай бұрын
You, too, huh? This was out of the blue for me.
@MetroPCSPhoneUnboxxer
Ай бұрын
Really don't care about the feelings of the creator at all work a callous comment like that. I really liked this video and found it informative
@billrosenstein
Ай бұрын
@@davidpile2576 that's a bit skitzo .
please for the love of all, keep making videos showing how we used to do things so this knowledge is not lost.
@sunsetpark_fpv
26 күн бұрын
There's a LOT of those type of things....in books
@elickson7340
25 күн бұрын
@@sunsetpark_fpvbooks are boring
@benllewellyn1887
15 күн бұрын
I still do these things 😂😂😂 But I use a drill 😉
I was waiting for him to be arrested at the end. Very disappointing.
@hlcepeda
Ай бұрын
Mason when arrested: "It's a fair cop."
@neilcarroll4579
Ай бұрын
I was waiting for the part where the dinosaur signalled it was the end of the working day and he went home in his open bottomed car .
@bellowphone
Ай бұрын
"What are you in for?" "Murder. You?" "I used a three-pin lewis." And they all moved away from me on the bench.
@MikehMike01
Ай бұрын
The UK will arrest people for memes so this is nothing
@antediluvianatheist5262
Ай бұрын
It's illegal to use because it's not that safe. A MASTER, as this guy probably was, knows what he's doing. But someone less skilled only has to cut the hole slightly wrong and it will fall out. or if the stone is bad, the force wil fracture it, and it will fall out. You need something that works, even if the guy doing it is clueless. And when you're lifting multi ton stones, yeah, you wanna get it right.
I call Three Pin Lewis And the Stonemasons as my new band name.
@abitoffblacksmithing9985
Ай бұрын
Nice....
@thatellipsisguy8984
Ай бұрын
All your admirers will want to see your centre pin… just be careful what you let them pass through the eye
@kyzor-sosay6087
Ай бұрын
Not bad
@sotxjoe3216
27 күн бұрын
Three-Pin Lewis "The Stone" Mason is my wrestling name.
@janskeet1382
27 күн бұрын
Sounds very prog-rock 🎸
I have worked with old stone masons who didn’t have power tools, and I have helped them to build a couple of private mausoleums. They were 8” thick granite walls 8’x10’ they called that device a German key. The Lewis pins we use are single angled apposing holes. Sometimes as many as three mostly two. And the type of steel they are made of now makes them very expensive but they work great,because you can’t use straps when setting walls. And also the pinned stone clamp works too and cheaper.
He picked up the three pin Lewis, the most difficult spare in all of bowling!!!
@iamnegan1515
26 күн бұрын
Lewis Lebowski
The Stomasons’ Guild of St. Stephen and St. George’s. What a title, absolutely wonderful.
Thank you for recording an posting this valuable educational video.
@DonKeecock
Ай бұрын
The entire time I've been getting it wrong. I was using a two pin lewis. Now maybe I can make some progress on my stone moving.
Hello, Dr., I watched this video that was randomly offered by KZread, which rarely got is useful out entertaining and EDUCATIONAL, but this is. I subscribed and I hope to see more.
Absolutely no clue how this appeared in my feed, but after a riveting two minutes twenty I declare a three thumbs up.
at age 71, having spent years in construction, mostly in everything EXCEPT stonework, and as a speculative Mason, I thoroughly enjoyed watching this video, new sub, but I seriously doubt I will EVER have occasion to use this on any stone whatsoever. That said, I can see this technique being very useful when similar constraints are applied to the lifting and placement of non-stone materials. Thank you.
It's always a pleasure to watch an Operative Mason at his craft!!! 🤠👍
@diogeneslantern18
Ай бұрын
An Operative Mason you say? Whence came ye?
@CristiNeagu
Ай бұрын
@@diogeneslantern18 From the West, I bet.
@alphagt62
Ай бұрын
Using those round hammers is a trick! Lots of practice to do that effectively
@worldtraveler930
Ай бұрын
@@diogeneslantern18From a Lodge of the Holy Saints John. Stephenville #267 and Clairette #1052 AF&AM. 😁
@worldtraveler930
Ай бұрын
@@CristiNeaguThe East. PM.
We have these holes in the 1891 stone and brick mansion we are restoring. We don't trust the old holes so we have just been using cargo straps. Every once in a while one of our viewers will mention these Lewis pins.
@Tight4Skin
Ай бұрын
Don't trust them holes! 😂
Illegal you say?! “Pulls out my 4 pin Geoffrey” the police run away screaming
They allow a stone to be positioned or fitted into a slot where other lifting systems would get in the way. The quality of the stone is important as the device puts the block in tension (splitting). My opinion, for what it's worth, is from basic mechanical engineering and dry stone wall building experience.
@zachweyrauch2988
Ай бұрын
thanks. I was about to ask "why is this a thing when we have ropes?"
@Max_Griswald
Ай бұрын
@@zachweyrauch2988- Ropes would be difficult to remove once the stone was in place if you had it sitting on them. You could use either nubs or pins driven into the sides of the stone to lift with ropes rather than having the rope lift from under the stone.
"What are you in for?" "Murdered my family. You?" "I used a three-pin lewis." And they all moved away from me on the bench.
@Marc-dm1fh
Ай бұрын
Nice reference
@jcarry5214
Ай бұрын
Litterbuggin
@dpall38
Ай бұрын
The Group W bench!
@ScottyBrunton
29 күн бұрын
Ha, ha, ha, that is a funny response thumbs up!
@ablanccanvas
28 күн бұрын
🤭
I always wondered...Thanks for a great video, impressive demonstration with a clear narration. Well done, Sir, well done indeed.
@ljprep6250
Ай бұрын
Do you cut a keystone shape in the stone, with the bottom wider? The 3 pieces fit too loosely to think otherwise, not that it needs to be a tight fit in either dimension.
@stasi0238
25 күн бұрын
@ljprep6250 yes you start squarely and then go wider
This is great! I've learned more in the comments than I expected 👍
Interesting but there’s plenty of stuff we don’t do now that we used to. Safety rules are written in blood.
@Fez4ever
27 күн бұрын
Actually.....safety rules are written in money by lawyers and insurance underwriters. Nobody in power cares about anyones life or safety. Never have, never will.
Used one in the ceiling of a bath stone quarry to lower crane parts years ago.
Very cool, thanks!
I love learning the "Old Ways" as the ingenuity of simple tools built way more things than the modern equivalents. There's a time and place for everything.
@truantray
Ай бұрын
This method was banned because the pins pull out and workers have died from the falling stone. So much for the old ways.
@andrewhooper7603
Ай бұрын
It's a neat little device, but saying it built more than modern cranes is just nonsense.
@CastleHassall
Ай бұрын
@@andrewhooper7603well, really the old devices built much more impressive and far more beautiful and character full buildings such as cathedrals
Second time seeing this and still love it. Thanks
People always tell me the cylindrical hammers are better until I try using one in front of them 😅
Absolutely fascinating, thank you very much.
Fantastic, learnt something new today. Thank you!
I have used Lewis pins in Canada, during a restoration. Sadly, they aren't up to standards, anymore. Nice video, great craftsmanship.
BRILLENT !!! I love it.......simple.....and it works.
Interesting demonstration! (new subscriber, stone-carver, Virginia)
Great little video!
Oi mate! Ya got a loicense for that there dangerous lewis??
SO SIMPLE... EXCELLENT VIDEO, STAY SAFE
These videos are great. Masonry and geo fan from the USA
Good work brother!
Fantastic chisels. They must be very hard and yet not brittle.
@anonymousguy1794
Ай бұрын
That's what she said...
@BeaulieuTodd
29 күн бұрын
Not in many years. 😢
Love the skill.
Very cool thank you for sharing that is a lot of work for one stone
@LT1
Ай бұрын
Yeah it should be illegal for being a gd waste of time
@user-kj1od5ed7p
Ай бұрын
@@LT1 I don't know anything about being a stone Mason so I would not know if this is a waste of time
@wolfie498
29 күн бұрын
@@LT1 Why is it a waste of time?
@TheBeefSlayer
17 күн бұрын
@@wolfie498because you have to chisel out a deep hole. You could use a claw grip or straps to lift it much faster than prepping this tool.
@wolfie498
16 күн бұрын
@@TheBeefSlayer not straps, that's the point. Claw grips if they're strong enough though, sounds a reasonable alternative.
Ingenious idea
Get in there Lewis!
Im amazed at the grand architecture we had centuries ago. They built awe inspiring structures that are still standing. Our current way of building is garbage in comparison
Learned something. Safe for smaller blocks, with care, clean stone, surely.
Wonderful!
What!!! No alien rock melting tech.
@Stonemasonsguild
Ай бұрын
Sorry
@janskeet1382
27 күн бұрын
You are just being naughty. You know that they did it with multi-harmonic sound waves. 🔊
Super cool video
A simple but great and illagal technique. 😊
Very interesting, thanks!😊
I use this account for ASMR and for popping. No idea why the KZread algo felt this was something i might like but here i am nonetheless...
I never knew why all those old stones had that hole in them, now I know!
Very cool!
Neat. Thanks for this info.
Great to see the video pop up in my feed! Why are they illegal now?
I liked it.
is there a particular reason they are illegal now?
@Smokinnnn
Ай бұрын
My guess is safty reasons.. 🤷🏻♂️ It's held only by preasure.
@Scarabswarm
Ай бұрын
@@SmokinnnnThat's my guess as well. It's too easy for a novice to carve the slot improperly, and the key to slip out while the block is in midair. It's also not guaranteed that a hidden flaw in the stone won't cause it to split while in midair and there is a ton of pressure on that wedge.
@Smokinnnn
Ай бұрын
@@Scarabswarm Exactly mate. Sounds logic to me. ✌🏽🍻
@serenity1378
Ай бұрын
@@Scarabswarm Either that or the pin failing. Ultimately, it's less safe than modern methods. Guarantee it was safer than alternatives when it was created but times move on and if we can save even a single life, we should.
Does your belt have a clock on it? If so that is both useful and cool looking.
What’s the largest size block you would lift with this? Would you ever use more than one in a single block?
@Stonemasonsguild
29 күн бұрын
I don’t know exactly but I have seen very large Lewises
Good. Thanks.
That s the same idea granite quarries use to pick up massive blocks of stone that weigh many tons. Of course it’s much larger than this. And the hole is drilled in with a jackhammer.
I like that👍
Explains how they hoisted blocks into place
The 3-Pin Lewis sounds like an especially nasty type of wrestling submission, possibly involving a bit of the what the ref cant see.
How long did it take? 15 minutes?
Fascinating. But why is it illegal? Scrolling through the comments now to see if it's already been answered.
Pretty cool, though I can see why it is illegal, someone that did not know how to make it right could kill someone lifting it
@grantofat6438
2 жыл бұрын
How? Someone lifting it would not be so stupid as to walk under it. Would they?
@jeffharper7579
Ай бұрын
Yeah I work with a couple of morons that are a little high and do stupid stuff like that. I work at a small stone quarry and have seen them walk under parts of the crusher as we had to replace some of it.
@paulfrost8952
Ай бұрын
@@jeffharper7579do they not put a barrier up to alert people of the overhead danger?
@pobvic
Ай бұрын
@@paulfrost8952 if you have a controlled number of people on site (ie staff and not public) then information rather than barriers is standard practice for lifts. Barriers can be impractical and people still walk through them.
@paulfrost8952
Ай бұрын
@@pobvic if the barrier can be walked through it’s not a barrier!
i wonder if this method was not to be used for stones exposed on the upper side of buildings as rainwater pooling and freezing in the slot (if turned upwards) could have prematurely weathered and split the stone
@tomekciepiaszuk582
Ай бұрын
It's UK, I will bet it's either something to do with H&S or someone was offended...
@beeble2003
Ай бұрын
@@tomekciepiaszuk582 What on Earth are you talking about? The question was about whether this method would have been used _in the past_ for stones on upper surfaces.
@tomekciepiaszuk582
Ай бұрын
@@beeble2003 Ah yes, clearly I didn't pay enough attention, ignore me.
@beeble2003
Ай бұрын
@@tomekciepiaszuk582 Fair enough. :)
@jack504
Ай бұрын
The holes would be in the mortar joints between courses. Capstones would be lifted wrapped with rope or inverted
First time I've seen a stonemason wearing a tie at work!
@Stonemasonsguild
Ай бұрын
that would depend on your clients.
@jcarry5214
Ай бұрын
I feel like I'm about to be served a 60 degree ale, not a rock.
I wonder who's job it would have been to cut these sockets, my first thought was it would have been an apprentice's job, to teach them to cut accurately, but then thinking of what all could go wrong and how costly it would be if not done right if it would have been the 'old guy' who had put his time in up top and was on what would have been considered light work?
Awesome! Now build a full-scale pyramid. Thanks!
@Stonemasonsguild
27 күн бұрын
Is this meant to be funny?
I assume that they were effective and easy to use, but the blocks can still split, so they were made illegal to stop people from using them. Professionals may have an occasional accident but the tool is so easy to use that amatures would cause all sorts of trouble. A pity.
Why is it illegal?
I was just wondering how to do this
So why is it illegal now?
Out of a million people.....maybe three or four could do that..!!
I can definitely see why its banned for use. probably wasn't uncommon that a stone could split and fall
Why's it illegal?
At first I thought "Three Pin Lewis" was a British version of "Three Card Monty."
Oh come on there's no way that stone could be lifted without advanced alien technology.
How heavy of a stone can this move?
Didn't catch the first few words, what is illegal to use?
@beeble2003
Ай бұрын
The three-pin Lewis that the whole video is about.
I clicked on this video thinking that block was some type of cheese.
A very good traditional technique. Unfortunately, I had to realize during the restoration that the weaker the sandstone, the more susceptible it is. Microcracks form and over time the stone cracks in two.
Neat 🙂
Illegal? What am I missing
Thank you, so why are they banned, health &safety say no they dont find it 100% safe. Would like to know.😊
Neat
The pin in the shackle is called a forelock 😊
Why would it now be illegal to use?
@jcarry5214
Ай бұрын
Splitting large rocks high in the air annihilating crewmen and passersby alike is my guess.
@serenity1378
Ай бұрын
Things fall, people get crushed, we have safer methods.
Stonemason’s version of “Ridin’ Dirty”.
OK, so WHY is this illegal?
oi mate where's ya 3 pin lewis loicense
The Freemasons hate him for revealing the secrets.
Why is it illegal now?
@NigelHatcherN
Ай бұрын
It can fail.
why is it now illegal to use?
@DanielMendoza-vz6ss
Ай бұрын
Not safe
@johnfisher7143
Ай бұрын
This device must have pre-dated safety. Safety is a modern concept designed to add thousands to the cost of everything, slow everything down, provide employment for a whole subculture of “safety” experts and increase the salary of everyone involved as a “pass through cost” to consumers.
@paulklee5790
Ай бұрын
@@johnfisher7143… and probably save a few lives along the way…
@DeeCook-ir2ny
Ай бұрын
@@johnfisher7143 Boy did you hit that one square and true. Safety is fine and all but there comes a point that if you need to feel that safe, it would be best that you just stay wrapped up in bubble wrap and your little blankie at home in Mommy's basement being fed pudding and pre-chewed bread...
@gloriousapplebees
Ай бұрын
I guess the safety question is 'how often does this fail?' causing a large heavy stone to fall with a lot of potential for damage. As well as whether this could compromise the internal strength of some stones (1 or a few in a wall?) which could cause a lack of expected structural strength. Probably just a bunch of pussies though looks good enough just slap er and make sure you say "that ain't going anywhere" LOL
Illegal? I’m not sure I understand? Like on a commercial site you mean? Or like……..ANYWHERE?
Illegal?
@andrewhooper7603
Ай бұрын
Used to be a man could hoist his own stones up with a simple lewis, but can't anymore because woke.
My middle name is Lewis… I wonder if it is somehow related to stone masonry.
Wouldn't it be easier and faster to just carry the stone at the edges?
Why is it illegal now? Unreliable?
@Stonemasonsguild
Ай бұрын
they can fail if they are snatched up to quickly, no problem with an old rope pully or block and tackle but with an electric winch or crane they can brake the stone around them and pull out.
So what is this for? Im so confused.
@Demonstormlord
Ай бұрын
He says in the beginning. It's an old method of lifting stones with a crane or tackle block.
@Stonemasonsguild
Ай бұрын
thanks
greeting fellow algorithm surfers 🏄
Stonemason ASMR. Thanks YT algorithm