@Mulein89, OP hasn't been on here for a while (2011). This is what Yahoo found for me. https://ppolinks.com/forestservicemuseum/2016_56_7 Decker Saddle.pdf
JM2C, Jim
I'm not fluent (in much of anything) but this website sounds like they have a "Procreate" for Android. JM2C, Jim
https://www.appconner.com/app-procreate?utm_source=bing&utm_medium=cpc&utm_campaign=809_afcapp_kw_tis0.1_harry_240319&utm_term=procreate&utm_content=kw2552_procreate#google_vignette
If I understand the instructions and the pictures right, the picture is half a pattern. I think if you double it, you'll have your pattern. I'm pretty sure the circumference of my wrist and forearm wouldn't fit on a 8.5" x 11" page. JM2C, Jim
I was wondering if you had any updates. I don't want to bother you but am very interested in your project. After seeing some of your other projects, I think your solution will be great. Thanks, Jim
I don't know about others but I personally don't need a closure(snap or strap) on my wallet. If it's in my pocket, it's closed. If I have it out, I've got it opened (looking for money). JM2C, Jim
I don't know the "bobbin class" either. I got mine from Bob but they also fit Juki TSC 441 and several others. You can search for 441 bobbins, that should get results. JM2C, Jim Dunn
I use those on the bobbins. The thread in the pictures are small spools. I couldn't use them on a smaller bobbin but for my Cowboy 4500, it works great. JM2C, Jim