Just glue the contactor thingy back onto the motor spindle. Done. Back to vintage computers.
On Wed, Dec 7, 2022, 9:47 AM Jim Brain via cctalk <[email protected]> wrote: > On 12/7/2022 11:28 AM, Mike Stein via cctalk wrote: > > I don't suppose there's an extra NC contact on the motor switch/relay? If > > so, a relay would do, otherwise two relays. > > Sadly, no relay at all. > > Since I was afraid of being off topic on the list, I hesitated to annoy > folks with too much detail, but it's unfair to those helping, so my > apologies. > > The device in question is a 1960's era NuTone 8 note door chime > (doorbell). I don't know the exact model, but here are some links to > similar units: > > https://www.youtube.com/watch?v=kbOVmMVrSTg > > > http://northsideforyourhome.squarespace.com/nutone-vintage-door-chime/nutone-lb42-westminster-8-note-chime/ > > I admit I grew up in a later period and I have lived under a rock for > part of my life, so I did not know such cool devices were once sold. > > If you can excuse the terrible narration, I put a small video together > to go over the unit, since I'd never seen such a cool piece of kit > before (living under the rock, so to speak). > > https://youtu.be/HhGMhiAjmRU > > The motor in question is a 3.6RPM "clock" motor, as far as I can tell. > It runs the "program", and the front doorbell switch engages the motor > momentarily to start the process. > > I came upon this slice of home ownership by way of my sister and brother > in law, who hosted thanksgiving at their "new to them" home, which looks > to have not been renovated since it was built in the early 1970's. This > chime, in addition to an 8 room NuTone intercom system, are installed in > the home to this day. All of us think the system is impressive and must > be kept in the home. It actually took us a while to find this, as I > offhandedly commented we had to knock on the door since the lighted > doorbell didn't seem to do anything, which prompted BIL to note they had > lived there for a month and had yet to find the door bell in the home > (the lighted front button heavily suggested in operating unit > somewhere). We finally found it in the entryway, disguised as a part of > the Intercom system (made by the same company). We were unsuccessful in > diagnosing the issue in the moment, but I was able to take the unit home > to work on it. > > As the video notes, I was able to determine and address the immediate > issue, but I notice the timing issue I wanted to solve it before > returning the unit. The video was mainly to explain to my sister and > BIL what had been wrong with the unit. > > Given the nature of the unit, the switch has to remain a NO SPST, and > I'd really prefer to not rewire the switch and disconnect it from the > 24VAC, since some buttons assume they are being driven with 24VAC. I > also prefer not to make any non removable changes to the unit. I > figured adding something to the terminals is easily removeable and thus > fair game. > > It works as-is, but I can see people tapping the button too fast and > then my BIL deciding to replace the unit after annoying friends or > missing packages. > > Jim > > -- > Jim Brain > [email protected] > www.jbrain.com > >
