In your picture piece 69, in my opinion, would be called a jeers bitt, used in conjunction with the jeers block found at the top of the mast. These were used mainly to raise and lower the yards. As Dave has said some terminology is very confusing and changes with time and style of ships. Although I have never heard of a ramhead block I would certainly not say they are not named as such. It is doing the same job as the jeers bitt, it may get it's name from the ramshead style of cleat on the side of it.
It is best to keep in mind that any bitt's main function is for belaying lines, unless it is equipped with sheaves then it would have a dual purpose of raising and lowering yards and belaying. In your picture there are four different styles of bitts all with different names and purposes but the same basic function of belaying lines.
The capstan, basically a vertical windlass, was used for the lifting of heavy loads which could include yards, ship's boats and such but it's main function was the anchor. Whether it was used with the jeers bitts and blocks to lift yards is hard to say but certainly could be. I would think that in the process of getting underway the capstan would be busy with the anchor, and with so many hands on deck I would also think for the most part the yards would be raised by hand.
To further confuse things there is also an apparatus called the jeers capstan which is a large block strung between two masts, typically the fore and main, that is used to raise and lower yards and other heavy loads.