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- I made a teaching aid to demonstrate the Whitworth QUICK REVERSE Mechanism used in most all crank type metal shapers.
This is video 1 of 3 parts covering the Whitworth Quick return Mechanism as used on a metal shaper.
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You are not wasting your time. Your videos are very interesting to like minded people. Thanks for your efforts.
Right on Sando.
Thanks, I know how much effort that took to do. It is very much appreciated. Very good explanation.
Hi Tubalcain,
I think this is one of your best Videos. The information was inlighting, and for me to here about great inventors is very inspiring.
Thanks Dale d
I really appreciate all the work you went to. Yes, there are many great men in Europe that invented a lot of intricate and interesting machines. As you mentioned, they do not receive the credit they are due here in the US. I have seen animations on TH-cam of how a Scotch Yoke and Geneva Drive works, to name two. I would be very interested in learning more about these tireless men who invented such devices. Since you have a history of instruction, I cannot think of a better person to accomplish this task. Yes, I would appreciate an insight into these great men and the machines they invented. Thank you in advance.
Dave
THANK YOU.
Your videos are very interesting. Regards from Sweden.
These types of videos are an outstanding source for provoking thinking. You have a great talent for making things clear. I hope you continue to create this type of instructional material. You have been instrumental in furnishing information for my getting back involved in metal working and machining. Your recommendations to other sites such as Keith Fenner have also been invaluable!!
Thanks Mr Pete!!
Thank you very much
My sentiments exactly!
One word (not Withworth) came to mind is Supercalifragilisticexpialidocious.
Your magician and your explanation are easy to understand. You bring us into the world of invention reproducing the path from an concept to production.
Thanks
I had an argument with an engineering lecturer once about the quick return action. He was insisting that a reversing switch was entirely useless on a shaper, whilst I pointed out that sometimes it's advantageous to cut on the back or pull-stroke (keyways for example) and that all the shapers I'd come across had a reversing switch. I also upset him by reversing the blade in a hacksaw and cutting on the pull stroke. I'd hurt my shoulder and couldn't cut the conventional way. To him it was just WRONG, no matter how well it worked.
The 55 degree included angle of Whitworth threads makes the best possible use of the strength of the material. That was important before high tensile steels were available, but 60 degrees is only a small compromise and a much easier angle to work with (when sharpening a tool bit for example). It's worth noting though, that quite a few machine slides have 55 degree dovetails for the same reason. I've seen someone spend a lot of money on a dovetail cutter, only to find out they didn't have 60 degree dovetails!
***** Cutting on the pull stroke can have advantages - Japanese style woodworking saws cut on the pull stroke for example. I find that it is easier to control a handsaw which cuts on the pull, especially when starting a cut.
+Paul Compton THANKS for watching
loved it. very informative, thank you for the effort.
greetings from sweden (:
this type of teaching is very good, it's very easy to understand all the details and to get a intuitive feel for what not to do (such as the gap before the cutting stroke). thank you very much for making this video.
THANKS
Pete someone you might like from the uk is Fred dibnah look him up on google hes gone now but i will never forget him the things he did was amazing
Thanks--I have watched most of the videos. Loved when he dropped that smokestack.
Yes the old smokestacks you'd never get me up those things lol he was a brave man pity hes gone cancer takes all the best people i want to go to his home to see his old workshop they keep it just like he is still there
Thanks for pointing me at Fred Dibnah... googled him, worth it. Very interesting fellow.
This was a fantastic help sir. Thank you.
Fascinating.
I for one, am fascinated by demonstrations like this. I remember being warned not to watch from the front the old South Bend shaper working in fear of getting center punched right in the forehead. Once again, you've spent your own time and money to educate us further out here in You Tube land. Thank you, very much.
Please give us many videos on how mechanical equipment works. This was a great video, please continue to expound historically upon the inventors who designed the devices that have made and continue to make our industrialized world. Thanks again for educating us about the industrial awakening of our civilization!
Thank you for simplifying the process. Even though I own an Atlas 7B shaper, it's great to know how the inner mechanics work. Please and yes I would be very interested in a How It Works series. Again thank you for all your efforts and hard work. David
Awesome video Mr. Pete! Thank you for going to all the trouble and work to build the models and making the video. The first time you cranked the model and the bull gear made one complete revolution, I understood how the quick return worked. I hope someday find a shaper to add to my home workshop!
Well done Sir! Worth the effort in making your teaching aid. I used a shaper at High School and made a 4 way tool post for my Dad's Myford lathe in 1975.
Recently purchased a milling machine with a lathe to follow.
You are an inspiration Mr Pete!
I found this video to be Very educational and fun... I want to build a power hacksaw and learning how this works will be helpfull ... Thank You for the time and effort you put into making this video and the working model
Once a educator always an educator. Another great video. Thanks Mr. Pete.
Another fascinating video I must have watched most all of your 300 + vids and I find them invaluable source of information I have greatly improved on my machining workmanship attending to the finer details does make the "finished look" . I am retired and I enjoy machining my own replacement parts in stainless steel for my 125cc Scooter. You are a superb teacher and explain things well in a way I understand. Keep up the fine work Mr.Tubalcain. and Many Thanks.
Marcus
THANKS
Thanks for the lesson, I just today bought what i think is a 7" shaper made by the Lock tool company of Melbourne (Australia). It needs some TLC and is missing the clapper box and vice but i got it cheap and all the machined surfaces are very good.
My plan is to restore it and use it, i had to grab it before it found its way to the scrap yard.
I'm 27... some young people like this stuff too.
If anyone is interested here is the thread.
www.practicalmachinist.com/vb/antique-machinery-history/lock-tool-company-shaper-ebay-288903/
Greetings Mr Pete. I came accross this old video by chance and you would not beleive how useful I have found it. Since I have lots of bandsaw blade stock (broken blades ) I intend to make an inverted jigsaw mechanism but with a much longer stroke - well you have just provided the solution to my problem. Thank you so much and good health to you and family sir. Ps. I enjoy all of your presentations - including your rants.
Thank you for watching, I’m glad you like my videos
Thanks so much, I now understand how this works
Hi Tubalcain.....I have just become aware of your channel and am enjoying your work and enthusiasm for your subjects. I am a woodworker but also like to learn about metalworking too....thank you for taking the time to teach others.
Thanks for watching--and welcome!
I am really interested in metal shapers. Thanks for making a great teaching aid and demonstrating how it works. The great inventors who designed the components that make such things possible are definitely worth spending some time learning about.
Great video showing how the ratio changed with distance from hub! I love videos on how mechanisms work, all sorts of them. I find mechanical typewriters and old sewing machine internals fascinating, and your videos explain some of what I've seen. Keep making them!
The learning aid is very helpful. It allows the imagination of different applications and possible modifications. The historical information about the inventors is interesting. I hope you continue to offer it.
Thank you for this, I did find it fascinating and a perfect explanation of something I have read about before but never understood. Also nice to hear someone singing the praises of my ancestors achievements. I am from across the pond as well. I have a 1936 Southbend 9" so I am also very aware of the skill and ingenuity of your countrymen as well. Thank you again and I appreciate the effort you went to to do this.
Very clear. I like these video's very much.
Thanks for this. It helped explain things. A 'How it Works' series would be great, but only in your own time.
I would enjoy a How it Works and even a Who Invented it and How it Works would make for a good video series, great job.
Keep up the good work, it's excellent and the comments on the great inventors is also fascinating.
+Keith Grove THANK you very much!
Thanks mrpete for a great video and to take the time to make a working model of the mechanism to show how it works is a real bonus, you are a great teacher. We really do appreciate the the considerable efforts you make in your videos and you are certainly not wasting your time.
We Brits really do appreciate the acknowledgement we get from guys like you from the States for the contributions we made to the Industrial revolution. Unfortunately we rarely see the words "made in England" on machinery etc, exactly as it is for you in the US and have to buy Chinese junk, because basically most of it is junk!
I stand corrected...... all of it is junk!!!
it would be awesome to see videos on how it works!!!!
I love this. Thank your for taking the time to teach and teach so well. I understand new principles of geometry/mechanics that I didn't before.
I like the how it works videos.
excellent video
It is very useful , especially for an application in which estooy working
Awesome video! I very much appreciate you taking the time to make the teaching aid! You should do the "How it's made" series!
+MattsMotorz THANKS for watching
you are a very good teacher, Wish I could have had a class with you.
Thanks for sharing...
A very nice video and I do like the how-to videos and the references and background of the inventors
+Robert Booth Thanks for watching
Here's another comment.. Great video!!!
+david kierzkowski THANKS for watching
This was very informative and , at least to me it was well Wittworth the trouble..
Well worded
Hi mrpete,
It's hard to do better, this is a really really excellent tutorial.
Before a shaper was little bit of a mystery for me, now, it's very clear, due to your work and clear teaching.
As for more tutorials, I'm eager for more, also a short bio of the inventors is a plus.
Thanks so much,
Pierre
Thanks
Thanks for this. The teaching aid showed well that the return stroke was when the crank block was closest to the pivot and so had less distance travel. Interesting how history is written, for example Stevenson did not "invent" the steam engine, but Swan did do much of the early development on the light bulb, contary to popular myth. How practical and mechanical things work is a great subject as can be seen with Adam Hart Davis in Local Heroes, and no doubt a whole series by yourself. All the best, Andy
Really nice work, thanks for the info. I'd like to see a figure 8 mechanical motion. not on the drive end but on the tool end.thanks again for the great video!
Many years ago, I was playing on a larger unit, and the machine did offer the function to reverse the direction of the motor, in turn, the cutting directions. In the event that you do not want to have to re-indicate the part back in if it has a crazy setup with jack screws and what not, and or, if you desire all the machined surfaces to be parallel/perpendicular to one another as much as the machine would allow for. I only once needed to set up the machine for such, as the stroke of the actual tool cutting point would not reach far enough, before the cutting tool holders set screw would have hit a vertical wall area of the part. You would have to change the tool mounting block "the clackers base" kingpin from the top hole to the bottom hole, and a lite extension spring would be flipped on to a hook point on the top to over come the friction of the clacker. If I remember correctly, the table feed was then backwards, which if you were not paying attention, I'll bet that could bite a guy in the butt. But, the machine would then pull inwards towards the machine slowly, while cutting, and would eject outwards faster, while the cutting tool would rock out of the way until the ram pulled inwards again. The amount of torque required to turn the counter gear "you called it a BULL GEAR" in turn, rock or swing the rocker/pivoting arm when the slider is close to the bottom of the machine, is huge. vs. if the stroke on the cutting action, and the slider is high in the machines casement is slower, but easier on the drive train and is more efficient. if cutting outwards, the bull gear needs to rotate clockwise, and provides a slower cutting speed, but is more force and in more accurate and less stress on the drive trian or to say, the slider's wear pads do not wear out as fast. The possibility of breaking something if cutting backwards is much higher, when you really would want the cutting tool to let go first and or the rams locking hitch to be overcome and slide. I have only heard a few stories of the rocker/swing arm breaking, never seen it. I understand, that the bolt/fastener that lock the slider in position on the bull gear is what typically gets sheared/broken, by design, unless somebody thought it would be a clever idea to throw a grade 8 / hardened shoulder bolt in its place, again, I never seen that happen either. The efficiency of the larger units, I suppose, really wouldn't care, as they were all hogs anyway. LOL...
Interesting prototype. You could have used the FAC system for prototyping as well.
thank you for your demo on the whitworth mechanism. I used this concept for a marble run and the whitworth is used to lift the balls to the top.
Thanks for taking the time to put this together. It answers all the questions!
+Jay Williams Thanks for watching
I've got a very mechanical mindset and love to see how things work and especially the tools and equipment of generations past. I as I was watching this video, my 5 year old daughter sat down and was fascinated with the illustration. Guess she takes after me, not that that's a bad thing.., keep them coming
Eureka! The absence of a linkage point allowing for the up and down movement is why my shaper build is binding!
Excellent, very clear video, Keep them coming.
This is the best explanation/demonstration of the Whitworth Quick Return Mechanism I've seen. A terrific teaching aid!
By the way that mystery tool #14 is a beauty - I have no idea where to search on the internet!
Thanks for spending the time to teach, It takes a long time to teach a short class.
I'm curious why one would use a shaping machine. Are they the precursor to milling machines? They looks terribly slow at accomplishing anything!
I don't need the entire mechanism, but it certainly helped me with something that I'm thinking of. Thank you
Few people have the ability to execute so eloquently a teaching video of this caliber... this is truly impressive! I can see now that your depth of knowledge on subjects is even more profound than I had prior realized. Thank you Sir...
P.S. We like! Thanks for the obvious extra effort that went into this teaching video.
Comments like yours, inspire me to do much more. THANKS!
I sure appreciate this one. I inherited a shopmade shaper from A. Keyser family but was unsuccessful in figuring out how to operate it. It was later returned to his grandkids.
I thought this was a fantastic video. You asked for suggestions on other topics to discuss in future videos and I have one. You could do an explanation of how back gears work. I already understand how, but I think an explanation of the concept would be great to see. A more ambitious version would be to show how a quick change gearbox on a lathe works.
refreshed my engineering knowledge through this video. but sir according to text book it is crank and slotted-lever mechanism. and what they say as whitworth i am not able to visualise. thanks for your effort to make us understand the quick return mechanism
cool simple cool .....even with style
if you know anything about programming languages or code, then i suggest you take a look at the language "python". It's free to everyone, and there are some excellent libraries available for linkages! all the mathematics is already done to model all kinds of linkage systems and you can design and animate your own and see how they look and operate in real time without having to construct models like this!
Yes, sir. Please keep making these types of videos. It took your teaching aid to understand the leverage causing the shaper to speed up on the return stroke. I think it a good idea would be to also see how a 5 axis CNC works. I know that's a tall order.
excellent video, i enjoy the demonstration mock ups.
thanks for making the video
Lyle,
You would be very interested -- if you haven't already seen it -- in the old steam powered ferry boat on display at the maritime museum in San Diego. It has propellers on both ends of the ship and the single propeller shaft can be reversed WHILE THE ENGINE IS RUNNING AT FULL SPEED! I was amazed. That would be a great mechanism for you to describe.
Jon
Mr Pete, I'm sorry about my mistake regarding 'how it works'. I'm still interested in any 'how it works' videos and anything you can explain about how it's made. I'll be looking for these future videos.
Thanks....13
great video. the quick return mechanism is my favorite mechanical mechanism. I for one would like to see a "how its made" series
Hello Tubalcain I enjoyed your video very interesting, the model`s explained everything accurately so you are not "just spinning wheels" Sir Joseph Whitworth also invented an extremely accurate sniper rifle that fired a hexagonal shaped round, Queen Victoria hit the target at its demonstration, Sir Joseph and Lady Whitworth are buried at Darley Dale church in Derbyshire in the shade of a 2000 year old Yew tree just 35 miles from my workshop.
Regards Ernie
Hello Mr. Pete222,I have used very few shapers in my maching days and was not really interested in how they functioned only what they could do, but watching this video and your excellent instructions I am fascinated with the teaching mechanism you used to explain how they work... I believe a lot of todays machining techniques all originated from great men like Mr. whitworth... As for enjoying your how to videos I simply am fascinated... Again, Exvellent video...Thanks,Frank
Nice demonstration of how the old shapers worked...I had only seen pictures of these old relics until now...
Great Job on this video Mr Pete. I am also interested in stuff like this. Keep up the good work.
I think your idea for a How it Works series would be great!
A sewing machine might be good material for a sequel. That whole lock-stitch seems so simple to look at, yet difficult to implement. The planetary reduction in a cordless drill is neat, mostly because it is so compact. A car differential is cool, too. I never did understand how a limited slip differential works. Elliptical gears are neat, although I don't know of any common application. A review of the various mechanisms to convert rotary reciprocating motion would be interesting (including the crank patent infringement problem that led Watts to the sun/planet gear).
I appreciate the history lesson, too. -- Thanks!!
Hallo !!!! I am a professor of mathematics !!!! Can you one day speak about Nónio Scale is the scale you have in your caliper and not very people know who invented !!!! And everyone who works with metals use!!!!!And thanks for all yours videos, I have learned a lot with you, please keep going !!!! - And yes !!!! How is working videos!!!! Sorry about my english!!!!!
Historical value in your presentation is very appreciated. How it works education is well worth it to me. Thank you!
you could have used a block of government cheese as the "work".
Tubalcain, your the best teacher i never had,!!! keep them coming please.............
Thank you for taking the time to make a mock up of the mechanism, I now can see why the backstroke is faster and understand it whereas just looking at your shaper it was not evident.
I certainly appreciate all of your hard work and effort into making this "How it works" video. I recently purchased a Atlas 7B and watching your video and playing with the shaper a bit really made it clear how it all comes together. I like to know the science or "magic" behind something instead of someone saying just do it this way or put these numbers in the program etc - no explanation, "just do it like I showed you." If you don't understand how something works to begin with, you may have a harder time trying to correct or troubleshoot something and risk ruining some equipment.
Thank you again!!
Your visual aid demonstrated the Whitworth quick return mechanism very well.. I also appreciated the citation of Whitworth's work, as I knew about the quick return mechanism of shapers but not its inventor.
Your tin knocking on the belt guards looks pretty good, too. Their fabrication might be the topic for a video.
Keep videos of this type coming.
Tom
Hey Mr. Pete,
Another great video. I appreciate the work you went through to explain the mechanism used in the sharper. I owned a sharper once. I loved just to start and listen to it plow away large chips of steel. The sound, the smell, the vision of the moments, it was like a piece of art work to me. I dreamed of creating something useful with it but I never got around to it. That machine was sold when my wife and I moved to a different home.
Anyway I have some input about your how it works series. How about helping you viewers to become great inventors like Joseph Whitworth by showing use how different mechanisms work and the applications for them, design parameters, etc. For example the Scottish yoke, or some type of an indexing mechanism, etc. You could show and explain these different mechanisms, and that would inspire your viewers to invent, and uses these elements to build something.
Thanks for your contributions to the metal working committee,
Mike Sportsman
Hi Pete,
I enjoy watching your video's. I do not think we give enough credit and praise to the great men of the world that have invented things that we use, or have lead to use's in everyday life. Well done. I think a "How It Works" segment, such as the operation of the Atlas Rhodes Shaper and presented in a similar format, makes very interesting learning and a treat to watch. I personally am amused by your accent, not to sure what part of the US you reside, but very different. In Australia, you just don't get a chance to talk with people who roll there words as you do. Keep up the good work.
Cheers
Pete McCormack
This video gets an A+++ in my mind. No crying about the schoolkids crashing machines and no completely unrelated political or societal based comments and complaints. Very good explanation and working demo of how the thing works. I do this type of demo rig for electrical mostly motors and electrical prinicpals ie Ohm Law - appreciate the time and learning curve one goes thru to get them to work and help illustrate how stuff works. I would like to see more like this.
Dan Bentler
Hey, I like the complaints about school kids and the political and societal comments and complaints. :) And the humor, too.
Yan Wo
Whats a fellow to do.. Some love it---some hate it.
The way I see it, Mr Pete is doing a free service for all who watch these videos. This is more or less his soap box, so if he lets out a gripe or two, it's his prerogative. If you don't like it, move on.
fyrebyrd301 Thanks for the support.
Would like to see some of your electrical explanation please, can you forward me a link. Rob
Enjoyed it very much. I would be interested in seeing more. Never had a chance to learn machine work, though I've always have been intrigued by it. I learn a lot about this stuff from you the other machinists on youtube....... Keep it up. By the way I also like history and history of mechanisms has always caught my attention as well. Old machinery is like art to me. Thanks
Pete... this session was very interesting to me. I got some old engineering books at a garage sale a while back, and I am going to build my own shaper. Now that I've seen this demo, I will be working on it. The only thing I'm looking at as a problem, is the ways, but what are project good for if there isn't some challenges. It was very well presented. I watched all 3 of them.
I hope you and your wife had a good time with abom79, and a fun vacation.
Michael M.
Hi Lyle ....I'm going to need to "bust your chops" a bit! I had watched this way back when, but just revisited it because of needing the "Whitworth" principal to employ in a project I am working on. I learned everything about Whitworth, except what makes the degree less on half the stroke, than the other half, and how that is determined!
These young ones would be far better of watching you, instead of killing zombies on the brainless X Box equipment.
It seems gone are the days where you went to the shed and make something to keep yourself entertained, but videos like yours might just spark that interest again.
Easy to watch and understand, working models, brilliant educational I myself would love to see more, and recommend to the budding machinist to watch.
Thanks Tubal.
Regards Tony
Hello! Fairley new subscriber, first time commitmenting. No, you are not wasting your time. This was a very interesting and learning demonstration. I love learning how things work. You got my vote to keep making "how things work" series. Thank You very much for the effort and dedication you spend producing these interesting videos. Pete
I saw a video by shopdogsam. In it he showed an antique manual valve grinder. You turn a crank and apparently the thing oscillates randomly. If you are looking for another "Howse it work" topic... :)
Excellent job, Mr. P ! Thanks for taking the time to build and demonstrate. Count one vote here for more "How it Works" vid's !
When I was looking at the machine actually run, I didn't really notice the difference in the forward to reverse movement, but when you showed it with your demonstrator model, it really made it clear. Thanks, and yes, I would love to see more of your "How it works" videos.... Excellent job.
Sir, I have always been confused how the shaper generates the different speed. You have in this video, cleared it up for me. Your teaching aid did the trick and it was like a light bulb going off when I saw it work.
Thank you, as always, your teaching is appreciated!
A valuable video and would love to see more. I enjoy the mentioning of great men and how they changed the way we do our work today. :-)
Thanks Mr Pete, you've just filled a gap in my knowledge. A series on how things work would be great.
I'm still waiting to learn why steam engines use cranks for power and eccentrics for valves?
Mr. Pete,
Terrific video. I enjoyed it completely. Thank you.
You are not spinning your wheels with this type of video... Twisting you gears perhaps, but not spinning your wheels. Thanks again. All the best. Chuck
I'm interested your Kinematic Design of Machines and Mechanisms, I will wrote down my investor's notebook. Thank you for tutor.
Dear Mr. pete. I like your videos a lot. THey give good insight on how machines work and how cutting tools work and also how to setup machinery. Although some stuff is different then i have learned in school it is still usefull because it makes you think. and one way is not specificly wrong or right from the other. I hope you make more videos like this were you explain mechanisms. I also like the background and history of the inventions. Your way of explaining with the degrees per stroke is insightfull. you could also aproach this "problem" by looking at the lever ratio when the slider is at the bottom and when the slider is at the top. This will give the same answer ofcourse. Any way thanks for all the videos untill now. And excuse me for all the bad grammer :)
kind regards from the netherlands,
Rinze
Oops, I went back and checked, for I wasn't sure, "How it works" not "How things work"... Again, thanks for the great learning videos on machines and unknown tools.
Thank you for a look behind the side plates and into the inner workings of the shaper. It never gets old looking at the mechanical genius of our forerunners. These guys made elegant machinery. It was as complicated as it had to be, not any more than necessary. I wonder what they would think of the constant change on websites that render them harder to use or downright unusable!!!
You are a gifted instructor, and a good egg. Keep putting in your two cents worth, too. I like to know I'm not the only one thinking.
Excellent work! Keep it up!