Rare Antique Seth Thomas 6 Full Column 8 Day Alarm Mantle Clock Watch 295H

Rare Antique Seth Thomas 6 Full Column 8 Day Alarm Mantle Clock Watch 295H. Will need servicing, everything winds up properly, it will run for awhile and then stop, alarm clock works. I have no idea how these things work so I very well could be doing something wrong to get it to stay running but don’t want to break anything so will leave it up to the professionals. I have done a lot of research and couldn’t find one of these with a alarm function. I recently talked with a clock repair guy, he assured me all it needs is a cleaning of the gears and such.