MANUAL TUBE BENDER Russian patent published in 1997 - IPC

FIELD: plastic metal working, namely tube bending by means of manual tool. SUBSTANCE: tube bender includes resting rollers mounted in body connected with first handle, bending template, П-shaped brace rigidly connected with second handle, working and fixing pawls. Bending template is in the form of segment with stepped trough and it is mounted with possibility of reciprocation motion normal relative to tube axis. Said template is moved with the aid of movable handle through gear wheel engaging with toothed rack connected by means of pin with template and with the aid of working pawl mounted on axle in said П-shaped brace joined with movable handle. Fixing pawl is mounted with possibility of double-position motion at bending process. Working pawl is mounted with possibility of three-position motion. Working pawl is in the form of two stoppers engaging with gear wheel and guiding butterfly-shaped lever mounted with possibility of engagement with rolling around roller. Said roller is mounted on fork-like lever spring-loaded relative to П-shaped brace. EFFECT: improved design. 2 cl, 5 dwg