ADJUSTABLE WRENCH Russian patent published in 1999 - IPC

FIELD: mechanical engineering. SUBSTANCE: adjustable wrench has body, movable jaw which operating surface is perpendicular to handle axis, worm, motion screw, support, slider for adjustment of span and rest. Hollow is formed on wrench body for installation of movable jaw and rest through it into handle channel. Partition is formed in other parallel channel. Worm pivot is arranged in partition hole, and other pivot of worm is positioned in insert. Motion screw and worm are coupled to each other through cylindrical joint and chamfers on pivots. One of pivots of motion screw is installed in support placed in handle and provided with adjusting screw to ensure constant axial contact between worm and motion screw. Adjustable wrench may be used when fastening members are positioned at difficult-to-get-at places. Slider movement is easy within the entire range of wrench span variation. Wrench has improved operating characteristics. EFFECT: extended range of application. 1 cl, 8 dwg