Ads
related to: antique key
Search results
Results From The WOW.Com Content Network
A telegraph key, clacker, tapper or morse key is a specialized electrical switch used by a trained operator to transmit text messages in Morse code in a telegraphy system. [1] Keys are used in all forms of electrical telegraph systems, including landline (also called wire) telegraphy and radio (also called wireless) telegraphy.
The normal key on the left will open only the lock that it goes to, but the skeleton key on the right will open any lock with this particular keyhole. Two warded lock keys and a homemade skeleton key A skeleton key (also known as a passkey [ 1 ] ) is a type of master key in which the serrated edge has been removed in such a way that it can open ...
Telegraph Sounder. A telegraph sounder is an antique electromechanical device used as a receiver on electrical telegraph lines during the 19th century. It was invented by Alfred Vail after 1850 to replace the previous receiving device, the cumbersome Morse register [1] and was the first practical application of the electromagnet.
The lock company, Slaymaker, Barry and Company, was founded in 1888 by Samuel R. Slaymaker and John F. Barry of Connellsville, Pennsylvania.Samuel Slaymaker had become interested in switch and signal locks while working for the Pennsylvania Railroad as a civil engineer.
As mentioned above, the most important marker is age. Vintage items are at least 20 years old but less than 100, and will often reflect the styles and trends of mid-20th century design, like 1950s ...
The Hall's Safe & Lock Company was an American [1] manufacturer of locks, safes, and bank vaults throughout the second half of the 19th century.. Incorporated by Joseph L. Hall in 1867, the Hall's Safe & Lock Co. of Cincinnati, Ohio quickly grew to become the largest [2] safe and vault manufacturer in the world.