Device for fixing the position of a bobbin carrier

The invention contains the fixing in position of a bobbin carrier on sewing machines with a horizontal shuttle. … The aim of the invention is to provide a simple and functionally reliable solution which can be produced economically and which is uncomplicated in terms of tending and maintenance work. The object is to achieve a simple and functionally reliable fixing in position of a bobbin carrier by means of the arrangement of a ventilator part in conjunction with a holding element, so that the bobbin carrier is prevented from jumping out of the bearing track of the shuttle housing. According to the invention, the object is achieved in that the two ventilator arms of the oscillating ventilator part are arranged in combination with a fixedly mounted finger. The pivot point of the ventilator part is in front of the centre of rotation of the shuttle housing in relation to the position of the needle. The ventilator arms of the ventilator part engage into a first and a second guide track in the bobbin carrier in the region between the centre of rotation of the shuttle and the position of the needle. The fixedly mounted finger holds the bobbin carrier in a third guide track between the pivot point of the ventilator part and the second guide track. ……