Workbench raising device, has wooden part with H-shaped sections comprising opening sliding in locking screw, groove and slide in dovetail shapes, metallic parts with thrust screws supporting two balls, and locking screws

摘要

The device has a wooden part with two H-shaped sections (A) comprising an opening (1) sliding in a locking screw (11), a groove (2) and a slide (4) in the respective female and male dovetail shapes. Metallic parts have two thrust screws supporting two steel balls (10) that are placed on a hole (3) and on two steel plates (9), four locking screws (11) with a throttle valve or a knurled button and a crank or handle to activate the screw.