Rotary dial
De LibreFind
| Advanced search |
- About 4 results found and you can help!
The rotary dial is a device mounted on or in a telephone or switchboard that is designed to send electrical pulses, known as pulse dialing, corresponding to the number dialed. The early form of the rotary dial used lugs on a finger plate instead of holes. Almon Brown Strowger filed the first patent for a rotary dial, U.S. patent #486,909, on December 21, 1891, that was later issued to him on November 29, 1892.
- Related: GPO Telephones, Crossbar switch, Stepping switch, Dual-tone multi-frequency, Pulse dialing, Dial tone, Push-button telephone, Off-hook, Telephone exchange, Single-frequency signaling, Ringdown, Ringing signal, Ericsson Dialog, Trimphone
| HeavenTrading retro telephones HeavenTrading retro telephones www.auctiva.com/.../viewstore2.aspx?id=1699223&page=home&search=Mobile+Phones+%26+Communication&logic=&catIds=42427,58540, - Web |
| Spring 1957 Issue of The Kansas Historical Quarter... Spring 1957 Issue of The Kansas Historical Quarterly www.kancoll.org/khq/1957/57_1_lindquist.htm - Web |
| "How Your Dial Phone Works", August 1946, Popular ... "How Your Dial Phone Works", August 1946, Popular Science books.google.com/.../books?id=LiEDAAAAMBAJ&pg=RA2-PA102&dq=Popular+Science+1946+motor+gun+boat&hl=en&ei=qHPrTIP_CemQnwforuySAg&sa=X&oi=book_result&ct=result&resnum=1&ved=0CC8Q6AEwAA#v=onepage&q&f=true - Web |
Gallery for «Rotary dial»
Average relevance
| Adding a On/Off Switch to the Ringer of a Rotary P... Adding a On/Off Switch to the Ringer of a Rotary Phone www.motormayhem.net/.../ - Web |
