Reply With QuoteThat looks good, be nice to see a picture of the buckle in the closed position.
I wanted to make a buckle which didn't increase the assembly thickness, preserved the strap, and yet was not too difficult to put on and off. This is one of two in bronze. Spring loaded ball bearings on both sides of the lever. Hollow stainless steel hinge pin. Thickness is the sum of both straps and 1.6mm. I still have to polish the internal track to smooth out the entry and putting it on.
That looks good, be nice to see a picture of the buckle in the closed position.
That's a great idea and nicely executed too. Any chance of a video showing how it all works together? I think it's quite self explanatory but it would be good to see how firm the detente is etc.
Reminds me of my Blancpain Fifty Fathoms bracelet.
Nice!
Positives are it looks like its a great design, the only negative I can see is the security of it when closed, would like a secondary fail safe over ball bearings
RIAC
Very clever. I guess it requires a careful aim to make sure it's correctly positioned to engage in the hole? Arguable not quite as secure as the traditional method, but in practice it's unlikely to open accidentally and has the advantage of not flexing the strap and wearing it out, which on a very expensive strap would make it appealing.
I like that.
Seconded. Very good job!Originally Posted by Possu
Looks good. I can imagine this being developed further into something very slick.
A Panerai version could have a huge great locking screw rather than the ball bearings. ;)
Looks great. I'd have one.
As long as I position the parts securely each time in the vise. these holes, axis to axis should be within a thousand or two. Nothing weird happens when the vise is clean of chips and secured properly. Center drill and proper speeds and lube help. I make my own watches, so I thought this would be easy. It was, but certainly not a breeze. FWIW, I have not machined the safety clasp. The expense of a pricey strap was one of the reasons. The other was the aesthetics of the convolutions of strap.
The ball bearings are spring loaded with press fitted brass rings securing their location. The larger the hole for the outside bars where they rest, the harder it would be to remove the lever. It is a balancing act, right now, very secure. I will machine a flip over clasp, to relax fears of accidental opening. I just plain worry about spring bars, they are my greatest fear.
Great idea. Can you show some pictures how it looks when it's closed?
Looks great! Also, seems to be comfortable.
Nice work.
How does it attach to the strap?
Dave
Last edited by Dave S; 9th October 2017 at 18:08.
Always a pleasure to see your contributions. I think Junghans have made something similar but not anywhere as thoroughly engineered as your version.
http://www.watch-band-center.com/wat...-clasp-16.html
More pictures please.
In the Sotadic Zone, apparently.
Looks better engineering than the junghans version, more solid. Perhaps an extra clip over opposite the hinge would address the security issues raised earlier? Just an idea...
Beautiful stuff. Really appreciate these inventions to things I assumed had been exhausted. Always amazed how many new things can be made despite decades of wristwatches!
Good to see, great work and I'd like to try one.
Very nice indeed well done!
I have a Galaxy jump hour that seems to work broadly on the same principle? The clasp secures along the plane of the bracelet though, with a pin on the underside engaging with the hole on the other strap end. I thought these were fairly common?
http://www.theretroworld.com/galaxy-...mp-hour-watch/
Is there an advantage to the pin bar opening perpendicular to the strap?
What a pleasure to see some genuine innovation!
Excellent job, well done! Some more photos would be great.
The strength of spring loaded balls is a mix of security and relative ease. It doesn't fall out under normal wear, but a thumb nail will grab it without breaking, scientific answer, right?
I trust you have Patent Pending or some sort of Copyright? Looks innovative and easy to use.
Rather than a patent, I would consider protecting the design if I was you. Really easy to do and very effective if somebody copies your work.
Someone who lies about the little things will lie about the big things too.
Very insecure IMHO.
I like the uncluttered look of it and it's inherent simplicity. If it worked I'd buy one. Gold or silver plated (stainless?) would be good.
Ian
WANT!
They could call it a homage.
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