I was trying to make the correct welt when the Driscolls purchased Roy's holdings. The assured me they were going to start reproducing it again so I kinda tabled the project.
Here is where I was with it. I found a source for the twisted paper core, but I have not been able to find the proper material.
I had obtained the M-2526 M-specs for the covering, but have not found that material. The irony is there was actually several differences in the welt throughout the production timeline. The M-specs had a revision on 08/30/1928 that said; Change fabric from 1.05 Sateen weighing 9.5 oz sq yard to 1.30 Sateen weighing 7.71 oz sq. yd.
The 2nd(??) revision list the following dated 01-16-28 as leather. Here is the verbiage from the M-Spec.
__Patent Leather.__
The material desired is a pyroxylin coated fabric, having an unembossed patent leather finish.
1. Color:
The color and degree of finish shall match that of our standard sample filed in our Engineering Laboratory files.
2. Composition:
The material is composed of a coat of pyroxylin applied uniformly to 1.05 Sateen conforming to M-2530
3. Width:
The width of this material shall be 50 inches minimum between selvage edges.
4. Weight:
The minimum weight of this material shall be 15 oz per square yard.
5. Cotton Fabric:
The cotton fabric used in this material shall conform to our specification M-2530. It shall have a minimum weight of 9.5 ounces per square yard.
6. Pyroxylin Coating:
(a) This coating shall have a minimum weight of 5.5 ounces per square yard.
(b) It shall not spew oil on heating to 110°C for 4 hours.
(c) It shall stand a light test conformable with that of the approved sample in the Engineering Laboratory file.
(d) It shall adhere firmly to the fabric and be free from pinholes and other mechanical defects.
Then, in one drawing I have it even calls for a cork sheeting to be sandwiched between the 1/16" paper core and the Patent Leather. So I guess reproducing this all depends on how accurately or authentically we want to reproduce it.
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