Yep, a very common older switch type for house lighting and other circuits. They fell out of favor when toggle switches took over, but still remained in production for quite some time after.
It's hard to make out, but in photo #3, on the upper mounting tab, is that an "H&H" stamping?
If so, your switch was made by the Hart & Hegeman company, who merged with Arrow in the late 1920s. They have since been bought by Cooper, who was somewhat recently acquired by Eaton, where the "Arrow-Hart" brand name lives on.
Shouldn't be hard at all to find a replacement, although based on your description, I wouldn't necessarily believe that the switch is what is wrong here...
It's hard to make out, but in photo #3, on the upper mounting tab, is that an "H&H" stamping?
If so, your switch was made by the Hart & Hegeman company, who merged with Arrow in the late 1920s. They have since been bought by Cooper, who was somewhat recently acquired by Eaton, where the "Arrow-Hart" brand name lives on.
Shouldn't be hard at all to find a replacement, although based on your description, I wouldn't necessarily believe that the switch is what is wrong here...