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Lockstitch

[edit]
Original - Illustration of the mechanical process executed by a sewing machine to create a lockstitch.
Reason
This gif displays the lockstitch method, a form of stiching used to sew. It was invented in 1833 by Walter Hunt, and is used by most household and factory sewing machines.
Articles this image appears in
Sewing machine and Lockstitch
Creator
NikolayS
  • Comment. Can anyone recommend me an editor who can slow it down? I am, admittedly, unfamiliar with this process. Synergy 21:13, 10 March 2009 (UTC)[reply]
  • Support GerardM (talk) 12:26, 11 March 2009 (UTC)[reply]
  • Weak Oppose Good EV but it's too fast. Makeemlighter (talk) 02:56, 12 March 2009 (UTC)[reply]
  • Weak support - A clear depiction of the process, not too fast IMO. But it lacks some sophistication in the drawing. -- Alvesgaspar (talk) 09:10, 12 March 2009 (UTC)[reply]
  • Conditional support. Informative, speed seems OK to me. Conditional because image page needs a (decent) English description for enWiki. --jjron (talk) 14:27, 12 March 2009 (UTC)[reply]
    • I had both translated; the de was mechanism of a sewing machine and fr was Animation showing how a sewing machine works. So combined with mine I wrote An animated representation of the inter workings of a sewing machine, using the lockstitch method. If someone had something better in mind, go for it. :) Synergy 22:21, 12 March 2009 (UTC)[reply]
      • I don't know about the subject so can't help out - and I know this goes beyond the original foreign captions - but it'd be nice if someone that did actually know about it named/described the key parts & actions illustrated.--jjron (talk) 07:25, 13 March 2009 (UTC)[reply]
        • The only part I don't know is the thing in the middle spinning, but it should be named on the article (if it isn't I'll add it in). The other parts are: cloth, thread, and a needle (I thought it would have been redundant to add that into the caption though, maybe I'm wrong?) And I went a bit further than the de and fr caption, because they were way too basic. Synergy 20:20, 13 March 2009 (UTC)[reply]
          • Eh, I don't think a lot of that 'basic' information is redundant for an image page. People make a lot assumptions about what is apparently obvious for other people just because they're familiar with a topic themself. And as I said describing the action (not just naming the parts) would be really helpful. For example, with my basic knowledge I can work out that the needle is feeding in the yellow thread, but why does it have that split in it and how is the thread fed into it - some/all of that may be in the article, but I personally think a simple summary on a diagram image page is very useful. Let me put it this way: say you look in a textbook and see a nice looking diagram - do you expect that diagram to have a nice simple caption summarising it, or do you expect to have to hunt through the chapter to find bits of pieces of information and cobble together your own description? Obviously you'd be thinking the book was pretty shonky if you had to do the latter, yet people seem to think the equivalent is perfectly fine, not just for Wikipedia, but for our FPs which are supposedly the best of the best. Hmmm, worth thinking about... --jjron (talk) 05:30, 14 March 2009 (UTC)[reply]
  • Strong oppose What's missing here is a clear demonstration of how the loop of yellow can go all the way around the ball of green thread, in spite of gravity. Papa Lima Whiskey (talk) 14:02, 14 March 2009 (UTC)[reply]
    • It's not a schematic of a sewing machine ;-) Both elements (the green spool and the yellow catching thing (I don't sew)) are held in place. Obviously, if they weren't, they'd fall to Earth... or whatever is at the bottom of a gif :-p Xavexgoem (talk) 13:32, 16 March 2009 (UTC)[reply]
      • I'm not sure you understood. The topology cannot work as shown. The illustration is not rational. It is incomplete. Two pieces of string, one of which is an unbroken loop, can only cross once and only once if the loop goes around one of the end pieces of the second piece of string. Exactly how it goes around the end piece of the other piece of string is not shown here. This illustration does not satisfy the criterion of completeness, which is a serious flaw. I would guess that it won't be easy to show the entire process in anything less than a 3D illustration, but that's probably irrelevant to this particular nomination. It's possible that this is the same problem that KP Botany is describing below. Papa Lima Whiskey (talk) 00:31, 18 March 2009 (UTC)[reply]
        • This editor is correct that something is missing. This is an illustration of a design that requires the bobbin (the spool upon which the green thread is wound) to be free spinning inside a stationary case that holds it, and is not attached to the machine, and the whole bobbin case with bobbin is inserted into a spinning mechanism in the machine, the part the hook is on. Without the information that the bobbin case is free from the machine but stationary while the bobbin is free spinning and the hook is spinning around this, a mechanically inclined reader will look at the illustration and say, WTF? --KP Botany (talk) 10:21, 21 March 2009 (UTC)[reply]
  • Support. I am not familiar with the subject but the demonstration and the caption are both pretty clear to me. - Alsandro · T · w:ka: Th · T 01:04, 15 March 2009 (UTC)[reply]
  • Support per nom Xavexgoem (talk) 13:32, 16 March 2009 (UTC)[reply]
  • Support very informative. Matt Deres (talk) 00:09, 17 March 2009 (UTC)[reply]
  • Conditional support Oppose for now if the weird shape of the fabric thread when it is picked up by the bobbin hook is changed, it should just be linear, it doesn't hook around one of the forks of the hook, but is carried in the center of the hook around the entire bobbin mechanism. This illustration is of the mechanism used on domestic sewing machines or home sewing machines to create lockstiches, the most common type of joining stitch in the most common type of home sewing machines. The yellow thread is the upper thread that is carried by the sewing machine needle from a spool usually on top of the machine and through the top of the fabric to give a little loop beneath the fabric and the green thread is held on a bobbin which is held in a casing in the machine just underneath the point where the needle thread enters the fabric and the bobbin integrates with the hook in the entire bobbin mechanism that carries the fabric thread around the bobbin allowing the lockstitch to be created. It was invented in the middle of the nineteenth century, and if you look at old and modern home sewing machines they are pretty much the same. If the tension of the fabric thread and the tension of the bobbin thread are both adjusted correctly and the feed dogs (grippers that run up in plates that separate the bobbin mechanism from the needle and which feed the fabric evenly through the machine are feeding properly for the fabric the lockstich will appear the same on the top of the fabric and the bottom of the fabric (assuming a single piece or two similar pieces of fabric). I don't know the correct names of anything, but I could probably find them out. Don't we have a diagram of a sewing machine on Wikipedia? Anyway, that's how it works. --KP Botany (talk) 05:44, 17 March 2009 (UTC)[reply]
  • Support — Jake Wartenberg 03:12, 18 March 2009 (UTC)[reply]

Is anyone going to edit this one? MER-C 08:31, 19 March 2009 (UTC)[reply]

Not promoted MER-C 11:53, 28 April 2009 (UTC)[reply]

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