Is this the 2,689th Edison DD Reproducer?

CDBPDX · Post by **CDBPDX** » Sun Sep 20, 2015 3:13 am

I've never seen a Diamond Disc reproducer with such a low serial number. Is it really the 2,689th DD reproducer?

Cliff

Victrolaboy · Post by **Victrolaboy** » Sun Sep 20, 2015 3:17 pm

I'm sure it is. Wasn't the oxidized copper DD reproducer used on the early A-150 model? Someone correct me if I'm wrong.

CDBPDX · Post by **CDBPDX** » Sun Sep 20, 2015 8:52 pm

There is an anomaly on the weight, looks like some factory repairs..?? Any ideas what this is?

Post by **fran604g** » Sun Sep 20, 2015 8:55 pm

Cliff, you should drop Steve Medved an email.

Fran

Torjazzer · Post by **Torjazzer** » Sun Sep 20, 2015 9:20 pm

Ahh. It's one of those reproducers that reproduces itself

CDBPDX · Post by **CDBPDX** » Sun Sep 20, 2015 9:41 pm

Edison and Mandelbrot, an unusual connection.

CDBPDX · Post by **CDBPDX** » Sun Sep 20, 2015 9:55 pm

fran604g wrote:Cliff, you should drop Steve Medved an email.

Fran

Done. I'll follow up when I get a reply. Cliff

CDBPDX · Post by **CDBPDX** » Mon Sep 21, 2015 11:50 am

CDBPDX wrote:
fran604g wrote:Cliff, you should drop Steve Medved an email.

Fran
Done. I'll follow up when I get a reply. Cliff

Here is the reply from Steve Medved:

"The t on the weight is commonly found and was used to mark the location for the jig to drill the plate holes so the plate holes would be centered. It looks like there was another repair you only got half in the photo.

It looks like someone drilled a pin hole and a screw hole close together then realized they were both in the wrong place so they drilled the holes a bit larger and filled them with brass rods. I have done this when someone drilled out a hole in a DD weight for the limit screw. If you look at the limit screw on this one it should have the limit pin with the nut machined on the end. The pin is threaded 1-64. I had a reproducer just like this that I drilled oversize so I could thread it 1-64 and make a repair to it. I blued the brass and you could not tell.

Edison never wasted, he corrected his mistakes. Edison was extremely parsimonious and instructed his factory workers to make any part that could be salvaged serviceable.

Edison converted regular DD reproducers to Edisonic reproducers. He even did this with Dance and Duncan stop reproducers."

He was right, the limit pin has a nut machined on it. Cool!

Thanks, Steven!

Post by **fran604g** » Mon Sep 21, 2015 11:57 am

Wonderful, Cliff, thanks for sharing!

It's funny; during my career as a toolmaker, I'd done the same type of repair, but didn't recognize it.

It's amazing to learn where the drilling jig reference point was. How cool!

Fran

PeterF · Post by **PeterF** » Mon Sep 21, 2015 10:02 pm

Ok, now go back and ask him about the oxidized bronze reproducers' serial numbers ,and their composite vs one-piece weights, please!

Is this the 2,689th Edison DD Reproducer?

Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?

Re: Is this the 2,689th Edison DD Reproducer?