"The phone is a remarkably complex, simple device, and very rarely ever needs repairs, once you fix them." - Dan/Panther
Started by Dan/Panther, March 20, 2010, 11:08:11 PM
Quote from: Dan/Panther on April 07, 2010, 11:15:22 PMThis is my thoughts.The first red highlight, I think the D#177001( on the bottom of my set ), only refers to the chassis, and all attached brackets, and subhousings without insides mounted (Network housing EQ housing dial bracket fastened permanently to the chassis. I think the practice of replacing networks etc, came as an afterthought, and was not an original intention. D#177001, I do not believe was the entire completed phone.Reason is that other modules that screw or bolt to the chassis (Ringer, Dial etc.) have their own D#. If the previous was the case why assign the ringer a D# ? Is the ringer part of the entire phone or is the chassis part of the ringer, they both have D#'s, see what I'm saying too confusing. In addition the D#'s in my phone are in sequence from D#177001- D#177018. There are 5 D#'s on the chassis alone, and still another 8 or 10 components not yet found to see what their numbers were, but my bet is that the cords, handset, caps, transmitter element, receiver element, had D#"s that would fill in the missing gaps from D#17701-D#177018. If the previous explanation ( Blue Highlighted )was correct, that would mean that all components in my phone were designed and perfected at exactly the same time, as no new D# were issued for subsequent improvements, all modules are clustered in one small group of D#'s.I think D#'s are assigned to modules or components, and the 125, 35, 209, are numbers given as 125 of 300.Example the EQ is D#177018, 35. My thinking EQ is Master part number D#177018, component number 35 of .I would totally agree except that the D#'s are too closely clustered to fit into the previous explanation.D/P
Quote from: paul-f on March 31, 2010, 01:08:47 AMQuote<snip>I believe the shorter numbers are simply serial numbers for components made to the marked specification. As has been pointed out, we don't know the starting number -- whether 1, 10, 100, etc. Each part would have a unique number, so its origin and history could be tracked during assembly, testing and use.Therefore your ringer is uniquely identified for tracking purposes using the two codes, D-177006 and 124.<snip>
Quote<snip>I believe the shorter numbers are simply serial numbers for components made to the marked specification. As has been pointed out, we don't know the starting number -- whether 1, 10, 100, etc. Each part would have a unique number, so its origin and history could be tracked during assembly, testing and use.Therefore your ringer is uniquely identified for tracking purposes using the two codes, D-177006 and 124.<snip>
Quote from: bwanna on April 08, 2010, 08:46:21 AMwell, i found two 4 prong plugs in my "stash". much to my surprise i see that one is marked "japan"...the other "taiwan" i have 3 302s at my other house....not sure what if any plugs are on them. will check the next time i am there. if it turns out i have one that you think would be appropriate for your 500, you can have it.here's a pic of the the "japan"
QuoteAll of my sets have four prong plugs that also are marked "Taiwan", maybe the Bell System did have some of their parts outsourced.
Quote from: paul-f on March 30, 2010, 01:12:45 AMThe patent numbers to search for are: G Handset: 151,614 Base: 153,928 Line Switch: 2,566,840 Ringer: 2,590,500Has anyone tracked down patent info for the handset element?Paul
Quote from: Dan/Panther on April 08, 2010, 07:43:13 PMCan drawings be traced by using patent numbers. I think it's not free though is it ?D/P