Thread brake and textile machines and thread feed devices equipped therewith

Thread brake, comprising:

• a holding means (17) for mounting the brake to a support (1), said holding means (17) having a receptacle (18) and a longitudinal axis (22) and having a bearing ring (32);
• an adjusting and protecting member (20) having an inner cavity (23) and being displaceably mounted in said receptacle (18) parallel to said axis (22) in an assembled state of the thread brake;
• a bearing pin (25, 42) having an assembly section (24, 43) being displaceably mounted in said cavity (23) parallel to said axis (22), and a bearing section (26, 44) being axially located adjacent with said assembly section, projecting out of said holding means (17) and being provided with a tension element (39, 45) at a side remote from said assembly section (24, 43), a first and a second brake element (33, 34) being axially displaceably mounted on said projecting bearing section (26, 44), wherein said first brake element for consistency in terminology (33) is intended for abutment against said holding means (17) via a first hub (35) having a slide face (37), wherein in said assembled state an end face of the bearing ring (32) contacts said first hub (35) and lies directly against said slide face (37) (17), whereas said second brake element (34) is mounted between said first brake element (33) and said tension element (39, 45);
• and a pretensioning mechanism being intended for adjustment of a braking force, said mechanism including said adjusting and protecting member (20), said tension element (39, 45) and a spring (29) being mounted in said cavity (23) and axially pretensioning said assembly section (24, 43) such that said tension element (39, 45) presses said second brake element (34) against said first brake element (33) and said first brake element (33) against said holding element (17).