Author Topic: Now the Story Can be Told - 1949 WECo 500 Set  (Read 237802 times)

Offline Phonesrfun

  • Hero Member
  • *****
  • Posts: 4867
  • "Number Please"
Re: Now the Story Can be Told.
« Reply #450 on: April 03, 2010, 08:58:48 PM »
Dan:

Paul-F's description is correct.  Here is a marked up photo.  The ones on the left are shunt, and would go to R and GN;  The ones on the right are the pulse and should go to F and RR

-Bill G

Offline Dan/Panther

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 5168
  • Kaw-Liga, I will NEVER forget you. 8/4/98--9/20/10
Re: Now the Story Can be Told.
« Reply #451 on: April 03, 2010, 09:29:20 PM »
Jim, Bill, Paul;
What is your take on the dial. Why would they abandon such a simple design ?
D/P

The More People I meet, The More I Love, and MISS My Dog.

Offline Phonesrfun

  • Hero Member
  • *****
  • Posts: 4867
  • "Number Please"
Re: Now the Story Can be Told.
« Reply #452 on: April 03, 2010, 09:48:58 PM »
Beats the heck out of me...

Ma Bell was very much motivated by cost.  Perhaps the 7a was more cost effective to produce.  The gear train in the 7A resembles the #6 dial much more than your prototype dial.

Maybe they also liked the coffee grinder sound of the more traditional Bell System dial.  That has been one of my objections of the Bell System dials as compared to the AE dials is the louder sound coming from the gears.  The nylon gear in your dial would have made a big difference in the sound, and you have even stated that your dial sounds more like a Princess dial than other dials.

Ultimately, I think it must have come down to cost, one way or the other.  The other thing is that the gear train in the 7A has a smaller footprint.

-Bill G

Offline McHeath

  • Hero Member
  • *****
  • Posts: 3350
Re: Now the Story Can be Told.
« Reply #453 on: April 03, 2010, 09:54:28 PM »
Quote
i remembered that the new wheel is 1/16" larger diameter. It's at 3", the original is at 2-15/16". It's amazing that .030 of an inch is that noticeable to the eye.

Ah, that's it.  The slightly larger disk makes the holes look a bit further from the edge.  I don't think it's worth worrying about at all, and again you've done a spectacular job on making that fingerwheel from scratch. 

Paul notes something I too was curious about, the view of the gear from the front of the dial face.  Would certainly enjoy seeing pictures of a 1949 7A dial to compare.

Offline paul-f

  • Hero Member
  • *****
  • Posts: 2808
    • Old Telephones as Entertainment!
Re: Now the Story Can be Told.
« Reply #454 on: April 03, 2010, 10:03:22 PM »
Jim, Bill, Paul;
What is your take on the dial. Why would they abandon such a simple design ?
D/P

Look at the production dial photos.  (Dial is 7A 10/49, rest of set is 1950.) 

It looks like they moved all the gears to a subassembly that could be tested seperately before being attached to the casting.  In the long run, mounting gears to a common metal plate is more stable and reliable.

The casting also doesn't have a ridge for the dust cover on the back.

You can see the handset cord terminated on the equalizer.





Visit: paul-f.com         WE 500  Design_Line

.

Offline Phonesrfun

  • Hero Member
  • *****
  • Posts: 4867
  • "Number Please"
Re: Now the Story Can be Told.
« Reply #455 on: April 03, 2010, 10:07:27 PM »
Here are some pics of my 1951 7A for comparison.
-Bill G

Offline Phonesrfun

  • Hero Member
  • *****
  • Posts: 4867
  • "Number Please"
Re: Now the Story Can be Told.
« Reply #456 on: April 03, 2010, 10:11:49 PM »
oops, I hadn't noticed that Paul also posted literally the same thing.  Looks like 49 and 51 7A dials were just about identical.
-Bill G

Offline paul-f

  • Hero Member
  • *****
  • Posts: 2808
    • Old Telephones as Entertainment!
Re: Now the Story Can be Told.
« Reply #457 on: April 03, 2010, 10:21:01 PM »
Bill,

It's great to have additional data points.  When researching the 500-series articles, I was lucky enough to have access to dozens of early 500s, to help determine when some changes were phased in.  I'd really like to examine sets for every month of production up through 1953, as there were probably minor changes.
« Last Edit: April 03, 2010, 10:30:10 PM by paul-f »
Visit: paul-f.com         WE 500  Design_Line

.

Offline paul-f

  • Hero Member
  • *****
  • Posts: 2808
    • Old Telephones as Entertainment!
Re: Now the Story Can be Told.
« Reply #458 on: April 03, 2010, 10:22:28 PM »
The only parts you haven't investigated are the line switch and network.

While I was taking photos, I popped the line switch cover and shot these.  WE redesigned the switch cover and mounting bracket for manufacturing.

We know the production networks were potted.  I wonder if this early one is, or if the components are visible -- in case they wanted to tweak the internals.  Possibly they're different from the production components.

Do you feel lucky?






Visit: paul-f.com         WE 500  Design_Line

.

Offline Jim S.

  • Hero Member
  • *****
  • Posts: 3086
Re: Now the Story Can be Told.
« Reply #459 on: April 03, 2010, 10:23:19 PM »
Jim, Bill, Paul;
What is your take on the dial. Why would they abandon such a simple design ?
D/P

I agree with Bill that it was probably a cost reason.  The footprint reason could of been part of the design change as well. Bell was interested in producing smaller dials for some of their other upcoming designs.

Stan may have some info in his new dial book. His book is supposed to finally be printed this May. It has  580 pages on dials. This book has been delayed for years. I posted a heads up about the book in the classified's.
Jim
You live, You learn,
You die, you forget it all.

Offline Dan/Panther

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 5168
  • Kaw-Liga, I will NEVER forget you. 8/4/98--9/20/10
Re: Now the Story Can be Told.
« Reply #460 on: April 03, 2010, 10:23:50 PM »
The 49, and 51 A dials are much more compact. Cost savings alone in gear frame metal, would be substantial over several million phones. Basically they are very similar dials,  just laid out more compact, with a couple modifications.
D/P

The More People I meet, The More I Love, and MISS My Dog.

Offline Jim S.

  • Hero Member
  • *****
  • Posts: 3086
Re: Now the Story Can be Told.
« Reply #461 on: April 03, 2010, 10:26:02 PM »

We know the production networks were potted.  I wonder if this early one is, or if the components are visible -- in case they wanted to tweak the internals.  Possibly they're different from the production components.

Do you feel lucky?



I am betting they didn't pot the field trial sets. I suspect they wanted them av liable for  testing purpose in case of failure.  The components may even have dates.
Jim
You live, You learn,
You die, you forget it all.

Offline Dan/Panther

  • Global Moderator
  • Hero Member
  • *****
  • Posts: 5168
  • Kaw-Liga, I will NEVER forget you. 8/4/98--9/20/10
Re: Now the Story Can be Told.
« Reply #462 on: April 03, 2010, 10:35:42 PM »
If by Potted you mean the grease substance filling the network, yes this one is, because some had seeped out through the cover a little around the sides.
D/P

The More People I meet, The More I Love, and MISS My Dog.

Offline Phonesrfun

  • Hero Member
  • *****
  • Posts: 4867
  • "Number Please"
Re: Now the Story Can be Told.
« Reply #463 on: April 03, 2010, 10:39:39 PM »
Boy, I am going to wear out my 51 from opening and closing it!   ;D

The hookswitch on mine looks identical to Pauls 1949, as does one from 1955.  The only difference is my 51 has a smoke colored make that black opaque cover and the 55 has a clear cover.

-Bill G

Offline Jim S.

  • Hero Member
  • *****
  • Posts: 3086
Re: Now the Story Can be Told.
« Reply #464 on: April 03, 2010, 10:39:47 PM »
If by Potted you mean the grease substance filling the network, yes this one is, because some had seeped out through the cover a little around the sides.
D/P


Yep, That is "potting" Don't open it.
Jim
You live, You learn,
You die, you forget it all.