ADJUSTABLE WRENCH Russian patent published in 1997 - IPC

FIELD: adjustable wrenches. SUBSTANCE: kinematic connection between spur gear 17 and bevel gear 46 is made in form of axle 6 located in channel and rigidly connected bevel and spur gears installed on the axle. Some journals of worm 3 and axles 6 are located in insert 8. Outer surface of handle has hole 30 for installation of slider 7 conjugated with longitudinal recess 29. Slider 7 is made with surfaces equidistant with outer and inner surface of handle. Support 33 of lead screw 4 is located in bushing 32 secured in handle by means of spring shackle 10. Ends of shackle 10 are installed in diametrical recesses 58 made on surface 38 of handle. Motion of slider 7 in recess 29 causes rotation of lead screw 4 and rotation is transmitted through gear 46, intermediate unit 5, gear 17 to worm 3 engaged with teeth 42 of mobile jaw 2 to cause its smooth motion. EFFECT: higher efficiency. 6 dwg