One of the more odd designs of rimfire rifles, these are also known as "Gill guns". Made by Savage and sold under other names like J.C. Higgins, Springfield and Ranger. These are older, actual Savage branded models, the walnut stocked 6A model is possibly pre war, the 6D Deluxe is from the mid '50's. There are a lot of variations.
Why are they called "Gill guns'? because they have these "gill" looking slots cut in the receiver.
The bolt knob is dual function. It can hold the bolt open, cock it and it can also lock the bolt forward for single shot action, like a regular bolt action rifle.
Two different locations, Utica, NY was Savages first factory opened in 1894, they bought Stevens in 1920, becoming Savage-Stevens, the Stevens location is noted on the second later rifle, Chicopee Falls, MA. There is a third location that can be found, it's used after 1960, from Westfield, Mass.
Little misleading..as they are semiauto, using lower power .22shorts or .22l is the reason for locking the bolt shut, then manually work the bolt to cycle.
As for how they get the "Click Clack" name... Because, they actually click and clack when fired slowly... watch and see.