Patent attributes
A spring-barrel arrangement for a timepiece includes a fixed plate-like component with a circular cutout. A spring barrel is rotatably mounted in said circular cutout by its corresponding circular outer contour. A barrel core is coaxially rotatably mounted relative to the spring barrel and is enclosed by a helical tension spring. An inner end of the spring is connected to the barrel core and its outer end connected to the spring barrel. A crown wheel with a toothed ring is fixed to the spring barrel and a first wheel of a wheel train of the timepiece is fixed to the barrel core. The circular cutout is formed through the plate-like component and the spring barrel has two supporting regions which extend radially beyond the diameter of the circular cutout and are each in abutment against one of the mutually opposite side surfaces of the plate-like component.
