What are these two square protrusion for.What screws do I remove to give me access to the click as the spring needs letting down. Thank you..

[binman]

I noticed these protrusions and now curious as to what they are for?

 

[Dr. Jon]

If I have it right the, one near the center is the end of the second wheel pivot. This wheel is usually at the center of the movement so I am guessing you have a center seconds watch. . The one further off center is the arbor for center shaft for the mainspring. In winding, it is turned to wind the spring from its center.

The winding wheels are under the dial as is the click. If there is release, it is a lever under the bezel. If not, you will have to remove the dial.

The dial is probably held by screws from the outside edge of the movement locking dial feet in place. If so you will have to remove the case screws. These are the two spanning the movement and dial edge. With these out, you can lift the movement from the case from the dial side. This will give you access to the dial screws.

Some dials are secured by a friction around the rim and can be removed by prying them up. The movement can stay in the case for this.

Do not try to pry it off unless you know what to look for and how to do this. If the dial is held by feet secured by screws, prying will break the dial. It happens a too often.

Once you have the dial off it is easy to find the release click. Many Englishes watch wind with a bevel gear at the end of the winding shaft. You will see this if you remove the movement from its case. This arrangement makes it tricky to control the let down of the spring. If you have the movement out , return it to its case to engage the winding crown.

Then, hold the crown as you release the click, to let the spring down gently.

 

[Tom McIntyre]

As Jon said, the pivot in the center is the 4th wheel for the center seconds with the third wheel below and to the left and the second wheel with the square arbor.

I also see the safety mechanism for the setting and winding on the edge of the case. You need to depress the respective in for each of those functions.

It may be easier to remove this movement from the case before working on it, Once it is removed you can probably lock the train by blocking the 4th wheel and remove the cock and pallet assembly. Then you can let the train down slowly with light pressure on the escape wheel.

Or you could leave everything in place and just remove the dial as Jon suggested.

 

[SKennedy]

This is a Swiss made movement in the English centre seconds style.

Undoing the small screw nearest the pendant will allow you to pull the crown out complete with winding stem. The other two smaller screws you can see retain the dial in a typically Swiss manner and you need to turn them so the notch in a shoulder allows the dial pin to pass. (you can't see enough to know where this is with the movement in the case but you might be able to do it by feel)

With the dial off the winding and click mechanism is all easy to see. There's no external way of releasing the power without taking the dial off.

 

[SKennedy]

I thought I had one in my spares.... here it is with the dial off.