Chinese Leather Shoe Patcher : a 3-point turn to lock a stitch 中國補鞋機 : 搖轉三步鎖出線步
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- čas přidán 14. 06. 2019
- Beginners using the machine would meet a lot of troubles such as thread breaking , needle & bobbin timing and stitch tension. After a few failure attempts, they would give up and some then would label it as a "crap". This blaming of the machine rather than the skills of people using it causes me to publish this video to correct this type of thinking. The machine mechanism is simply continuous 3-point turns of the flywheel which drives both the needle and bobbin to twist a series of lock stitches. In this video, the function of each 3-point turn is examined for easy understanding. A thorough understanding of how the machine works would surely help people value the machine as a good DIY tool rather than labelling it as "junk" or "crap'.
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Brilliant! I'm just in awe of how these machines all work together and of the person/people who worked all the mechanical movements and adjustments out to achieve a lock stitch from just turning a crank handle. These machines literally "revolutionised" stitching.
These peoples were indeed mechanical talents and their machine is a mechanical wonder. It looks like a museum item but is still accepted today despite so many modern sewing machines available. Thanks for watching.
@@kslam5733 I love it and I am also very grateful to you for the time you have spent putting such great instructional videos together. Thank you and greetings from England!
I know that you published this as a demonstration for the Patcher specifically. However, it is the best video I've seen on how a sewing machine works. Thanks for taking the time to make the video and share it.
Thanks for your words of encouragement. I found that you are also a DIY master almost skillful in making and refurbishing things that we use everyday. Rather, I would learn more from you through your CZcams channel. As you are also a member of the facebook group "Chinese Leather Shoe Patcher", I have chance to learn more from you about the patcher especially you have mentioned the "reverse engineering" of the patcher.
The video I wish I had made! It is critical that the heel of the hook is past the needle like at 7:15, and there is an opening between the "moon" and the heel. Along with smooth contact for the thread coming under. Great video!
You know the ways how this little wonder works and describe in words clearly. Hope you can find more from this 'museum collection' item. Thanks for watching.
Wow. This video is awesome. You are legend in teaching.👌👌
Thanks, hope that it helps people understand more the machine, and more confident they can be to deal with any issues happened.
Your videos are very informative. Thank you for your time and efforts.
Wonderful video. I wish you'd do a video showing how the rear cams time to the levers as the handwheel is moving. THANK YOU so much for a great well explained video.
I hope so, but at this moment I am quite indulged in other interesting things such as electronics and 3D drawing. I would take it up when time permits.
Thank you, great video and clear explanation!
Thank you Lam!
Thank You. Very interesting. I have a Singer 29k. I'll have to use it more often than I do.
Amazing how this stuff works, thanks.
Excellent, I need to watch it again!
Thanks for watching. Hope that it can help you to know more about the patcher.
Great video! Thank you for taking the trouble. If I had been able to educate myself on this when I was a teenager, I believe I would have saved my first sewing machine, which after a few years got out of sync and adjustment, and I could not get anyone local to fix it successfully.
You are welcome! I got the same experience as yours when meeting a faulty appliance and the result was usually throwing it away. The incentives for making videos on the Chinese patchers is stopping users to throw them into the trash bin.
I had quiet a bit of trouble with my machine picking up the bobbin thread. There were problems with various part not being in sync...such as the handle not being in right place when the bobbin was a certain position and the cam not being where it should be. After many many attempts I finally was successful in picking up the bobbin thread but it was exhausting. I am marking all moving parts with position scratches just in case it have to remove some part for some reason. I do appreciate this video because it gives me another tool to get more perspective on how the machine works. Please continue to make more videos they are helpful. THANKS
This is the purpose of making this video : let users know the steps how stitches formed and through the process they would also learn the structure and mechanism of the machine. Then any issue related to the bobbin would no longer be a trouble for them. The initial setbacks in using the machine you suffered is also the story of me and many. Your insistence to overcome the problems saved the machine from being treated as a "crap".
Thank you for making these videos. You have helped me very much.
You are welcome. Happy to see you can find hints to the issues you encountered after watching the videos.
Gracias muy buena tu explicación gracias.
Thank you sir.
Excellent, thanks.
Really Fantastic, thanks
THANKS FOR SHARING.
Great machine. If it is not working it is the operators fault. Love mine!
Thank you very much for these videos. They are very helpful and informative.
I'm very happy with my machines performance. but I would like to
try to get my patcher to sew a little thicker thread with out fraying
and knotting up and braking the top thread. Seeing through your
transparent shuttle bed cover I can see what is happening.
(I'm using a135x16LR grooved needle plus the thicker thread)
Therefore running out of room. I think by
making the needle hole a little bigger may solve my problem.
Good video.
Mine works fine!
Super
After watching your video my machine was out of time. I reset the bobbin carriage according to how you did it and low and behold the machine started sewing. Thank you so much. BTW how do I lubricate the hidden, bobbin drive gears?
If you mean bobbin drive gears are those immediately under the bobbin, then just put a few drops of lubrication onto them. If you mean the rod moving the bobbin, then a few drops of lubrication onto the areas you can touch.
Okay, it's my fault that I can't dependably get my machine to work. In trying to figure it out, it appears that there is super critical timing issue that requires the shuttle carrier to be inserted at just the right position to engage the teeth of the reciprocating bar down below. I'm not sure I have it right now but I am close since it will stitch most of the time, but I still get binding, usually of the top thread being stuck in the bobbin compartment. A video that explicitly shows the correct installation of the shuttle carrier would be great. After that, everything else seems to be fairly straight foward, although tensioning the bobbin and top thread is also a bit tricky and has required a lot of trial and error. Great video though.
Your experience in using the machine was also true to me. This machine needs some adjustments and users need learning some basic skills before any success. As skills accumulated, users would find the machine a very useful DIY tool. This is the reason why I like to share what I have learned using the machine in refurbishing, repairing and making things. It is hoped that users' negative views when using it in the beginning would not last long. For timing issue，I have another video on it. Search CZcams for it.
When placing the bobbin back into the machine, put the handle on the crank at 12 o'clock, the bobbin shuttle should be a half moon with its center at 3 o'clock in the bobbin hole.
Ser, what size needle u used.tnx
Hello I'm having a problem with mine not locking the stich properly. When the needle pulls up the treads don't get pulled out of the shuttle mechanism. I have slightly bored the hole and the helped. But I cannot seem to get my needle to lock the stitches. Timing of bobbin is same as yours though I will double check.
Using size 22 needle, 2 pieces of 3oz leather and waxed hemp cord that came with my leather crafting kit (bought machine separately to try and speed things up)
Sounds like you need to adjust your upper thread tensioners tighter
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Only by hand: move up the presser foot (disable it), move the fabric each time to a suitable length, then turn the needle down to sew.
I just about pulled my hair out for the last hour following this video and others to get the needle to thread. I just discovered it was because my needle was slightly bent the Bob And couldn’t catch the thread. Make sure your needles straight.
Thanks for watching. The working principle is when the needle pierces into the fabrics, thread turns to be U shaped via the needle eye. On one side, thread gets into the needle groove; on the other side where no groove but a scarf, thread also being straightened. Then when needle withdraws from the fabrics, friction with the fabrics creates a thread loop on the scarf side. If the needle position is wrong, the shuttle hook would not grab it.
I wish you could have inset a little split screen showing the crank wheel so we could see how it lines at all positions...especially 12 o'clock.
Indeed I have thought about that putting a split screen showing the crank wheel movement. However, in doing so the shots on the bobbin movement would be reduced in size. I then simplified the crank wheel movement views to just a wheel with animated arrows showing the 3 steps positions. Thanks for your suggestions.
Fantastic video. Do you know something about the historie of such a fantastic invention?
The origin of the prototype of this patcher was unknown but may be from Europe in the 19th century. The popular use of it began in the post war China in 1949 when China needed to develop on her own in face of the US containment. The containment made China suffer from inadequacies in everything especially daily necessities. Chinese people needed to wear clothes and shoes even though they were broken. The patchers were then put to use for this purpose. These patchers were expensive during that time. People tried to produce them in their backyards at nights believing that they would get rich by selling them. They dared not produce them openly in day time because they were not allowed during that time. Also many people tried to buy one to be cobblers in the streets. They could earn a living by that tool. As producing them was so difficult the patcher was rough both in outlook and the materials. The patchers then remain rough even up to nowadays as they were designed for the professionals with no user friendly settings and streamlined body.
The patchers were quite a useful patching machine for the street cobblers since the 1940s. They could be found almost in every city in China in the 1970s, 80s, 90s and even the 2000s. However when China reformed herself in the 1980s and people getting wealthy in the 2000s, the patchers were gradually phased out from the streets.
Surprisingly the machine is now quite acceptable to other countries rather than China herself. Chinese people do not like to own such a museum item in their home where spaces are quite limited. They get used to buy things when broken rather than letting the street cobblers to mend them.
Great video. I recently purchased one of these and have most of the adjustments worked out. I am still experiencing some skipped stitches and not sure why. Not sure where the failure is in the 3 point turn, than obviously needle thread or bobbin thread missed the connection. Will you share your thoughts on this?
Check the path the thread runs from the thread spool to the needle. Any obstacles would tighten the thread from forming the loop for the bobbin hook to grab. A skipped stitch would form. The correct routing of the thread is also important. Check from the file section of the Facebook group "China leather shoe patcher" for more details. You can also raise your questions there. Join them as a member and you would have lots of helping hands.
@@kslam5733 Thank you, I will check into that
Is this in place of backstitches?
Hello, was wondering if you have any information on the thread constantly snapping?
The snapping of thread especially the upper thread would definitely happen if no polishing done to areas the thread goes through. So check every inch the thread comes into contact and polishing them. Watch out especially the bobbin case, the edges and the small hole the bobbin thread goes through. Also the path the upper thread runs through such as any twists formed and jammed inside the tensioner, any obstacle happened in any corner passing through, thread size is suitable for the needle (too thick would not go through the needle eye smoothly and would snap).... If problem still exists, make a transparent plastic cover like my example in the video to find out how and when it happened. It is not difficult to find out as it is just a simple machine.
@@kslam5733 thank you very much!
i see you have a custom thread tension adjustment knob ? no matter how far i back the standard knob off its still too tight ? great video by the way thanks
There must be something wrong with the path the thread passing through rather than the tension adjustment mechanism. Check carefully inch by inch how the thread moves, you will find the answer.
@@kslam5733 i did i ended up cutting a little off the spring , thx for your reply i have been working on this on and off for several weeks with no luck yet , im very patinet and have found your videos most helpful , my machine arrived un-tested locked down it was assembled wrong from factory , the pitman rod was in the wrong grove of the flywheel , im slowly getting there thanks again for your reply
Your machine came with the hole in top of the bobbin or you made it, coz mine doesn’t have that one, is it important?
Do you mean the iron flat plate on top of the bar? the hole comes with the plate because the plate can be used both sides, it is for fitting onto the extrude point for fixing the plate. My bobbins do not have holes on them. If there is, it is for easy threading of the bobbin.
The mystery is solved!
What are the 4 and 9 for in this 3 step process?
Clock positions.
16:39. My thread gets hungup in bobbin and breaks timing is good
How do I get the foot to wall again
Do you mean "get the foot to work" again ？ Describe more about the issue you are encountering.
I'm beginning to see the wood from the trees. I didnt realise in the beginning theres a thin see through piece of plastic being sewn.
Press pause to view and to figure out how this little machine works. To unfold the secrets of how the needle and the bobbin work to form the lockstitches is my intention in making this video. Thanks for your feedback.
I love my machine its great .But i have used machines for years and worked as a knitting machine mechinec in the 1970's at Danskin. These machines are well made but need a few edges filed down .If the machine doesnt work for you its your falt because you dont have the skill to use it . So watch a few videos on you tube there is a lot of info on problems and ways to correct them Good luck . You can do it you just need the skill learn from watching . 😎 This is a great video THANKS I am still learning to all machines are different . You learn your whole live age doesnt matter.
I totally agree with the points you raised. Learn from others to improve skills of using tools. This should last for whole life. Don't blame the machine but yourself for any failure. All your points are great wisdom.
Цена к ваз Ferrari Ho De
👍👍👍👏🏼👏🏼👏🏼👏🏼
Thanks!
Супер меня помог
you are welcome.
Very clever description but I will never understand it! I am having trouble with my machine
Take time! I also did not understand the machine in the beginning. As I had a lot of time after retirement, I could devote more on how it works. It was indeed not difficult as you can see all my videos on this machine. The videos reflect the issues I came across and the ways I overcame them. Just two words for you: Time and practice.
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Not fully understand the text translated. The thickness of the threat depends on what you want to sew. From my experience, use good quality and not too thin thread is the golden rule. The thread needs to pass through many edges of the machine, It is easy to break. You also need to use proper size of needle and right thickness of thread, they need to match. All these should be learned through practices by yourself.
I just realised 1,4 and 9 are clock positions...
Buenas tardes a ver si esta vez tengo suerte para poder obtener una de esas máquinas gracias 04123088640
¡De nada! Espero que la máquina pueda ayudarte. You are welcome! Hope the machine can help you.
I have to say that your video is useless for someone trying to understand how the actual first loop is made by the timing mechanism. You always show the segment AFTER bobbin's spool thread is already IN the HOLE.
I took my machine apart, cleaning and sanding sharp edges everywhere, however, now the needle cannot grab the spool's thread, even after following instructions of this video, that's why the frustrating comment.
For timing issue, see another video I posted. The purpose of this video is for users having the basic knowledge and skills in using the machine. It is really "useless" to find any solution for the timing issue.
@@kslam5733 The segment, when needle thread picks the bobbin's thread, is not on any video of yours.
It looks that every machine of this type is different. I finally made it work but I had to put handle at 12 o'clock and half-moon carrier of the spool at 3 o'clock contrary of your suggestion.
@@a.z.c.681 All these machines are the same in structure since their birth in the 1940s in China. What you said the directions of placing the bobbin carrier are reaching the same result. My version of placing both the bobbin carrier and the handle at 9 o'clock positions are adapted from the original Chinese version of instructions. It is easier to remember and to adjust. For more information about how to use these machines, join the Facebook group "China leather shoe patcher". People there would be very happy to give answers to your problems.
@@kslam5733 Thanks.