Phone jack history

[analogoutput]

Hackaday visits the history of the phone jack:

Ancient History Of The Phone Jack

Here’s the 1893 patent drawing:
https://pdfpiw.uspto.gov/.piw?docid=00489570&SectionNum=2&IDKey=71A4DA852E08&HomeUrl=http://patft.uspto.gov/netahtml/PTO/patimg.htm

[fredrik]

So are we going to assume they’re reading this forum?

8-Step Arduino Sequencer

(Wikipedia says “In the UK, the terms jack plug and jack socket are commonly used for the respective male and female phone connectors. In the US, a stationary (more fixed) electrical connector is called a jack .” and mentions that “jack” comes from a 1880’s patent. I just looked at that, and it’s for a “cut-out or spring-jack switch” mechanism where the signal is automatically grounded when nothing’s plugged in. So “jack” refers to the switch mechanism, not the plug, and you’re all wrong …

(the patent I mention there is his first “spring-jack switch” patent from 1884, also linked to from that article)

[devicex]

learn something every day around here

[analogoutput]

@fredrik

So are we going to assume they’re reading this forum?

Wasn’t me, guv’nor! ​​​​​​​​​​​​

[fredrik]

@devicex

learn something every day

That’s why we’re here! Well, one of the reasons at least.

[devicex]

well thanks to your patience and willingness to share we learn a lot more ! thank you