Swiss Saddler Clam Drawings

[ClaimedVacancy]

Update #3.

Ive got all the parts that need gluing, glued up at this point. I did readjust the geometry for the trajectory of the swinging arm so that it would nest in the yoke (cam foot lever). This will work much better.

I also took some shots with my hand for reference. I have fairly large hands if that helps.

Next will be trimming, shaping and lots of sanding followed by precise cutting at the bottom of the arms for mounting to a slab of hardwood. And finally, after those parts, the locking device for the foot lever cam yoke.

 

[dikman]

I came across this on facebook so saved the photos but unfortunately there were only the two. The locking/release mechanism is interesting, could be an interesting project.

It is marked www.swissleathertools.ch but I can't find out anything more.

Edited Wednesday at 10:04 PM by dikman

[ClaimedVacancy]

@dikman man! Are those still up for sale on marketplace? Yeah those are ones that are still for sale on the site i posted at the beginning of the thread! I certainly haven't found out any info on them either. I did study that particular one though. In fact, I’m going to model the locking device. 

Here is update #4 for today:

All the parts are 90% shaped and sanded. So far so good.
 

[dikman]

Looking good. It was on a facebook site by a guy called Slickbald (used to post on here once I think) and the photos were posted on there, so not for sale. I had a look at the website I mentioned but it's in German and I couldn't find the clam on there.

[ClaimedVacancy]

@dikman try this one. It’s still on there!

https://shop.leder-louis.ch/en/sewing-and-stitching-tools/stitching-ponies-and-clamps/sattler-naehzange-schweizer-modell./090-007-01
 

For today’s update, more sanding in the crotch areas of the yoke cam as well as small areas of the arm. I also installed the bushing and got some precision holes drilled. Then i put it temporarily together. I did decided to give it one more layer of wood on the arms. I chose 1/4” plain maple so that it would match the ambrosia maple cover plates and be flush with them. Before the additional maple it was about a quarter shy of the edge of the cover plates. 
 

One thing to note; the use of bronze or beryllium bushings is a must in my opinion for the cam and the moveable arm. No friction points and very very smooth operation. I used 1/4” ID 3/8”s OD and im happy with that. For the bolts i just used some grade 8 smooth shank bolts. The cam is a grade bolt with the threads and head cut off and the ends polished.
 

The jaws will need work once it is screwed and bolted together. But thats for another time. I did trim them today but thats it. I very well may cut them quite a bit further and use some cocobolo to bolster that area back since i have some.