phonogfp wrote:rodpickett wrote:WOW! I'm not familiar with a Keller. Do you have more information Rene?
During the North American Phonograph Company period, that coin-op was probably the most successful, and it utilized a Class M mechanism. It was designed by Albert Keller, who filed a U.S. patent on its mechanism in 1891.
George P.
The patents for the mechanics show 1894. Here is an original Class M that was once in a Keller. Note the oak base with locks under the case, extended carriage arm with contactor plate on it, and a part of the plunger mechanism separate from the machine. The carriage extender and other part can be seen on the patent drawing.
In front of the oak base is a hole for a square key. If you turn the square rod in the hole, 2 securing rods protrude on each side of the base thus locking the base in the cabinet.
Sorry about the ugly dude in the mirror!