Extension for adjustable leg and method of using

A method of applying a channel-shaped extension to adjust heights of workpieces that have channel-shaped adjustable legs with two opposite side walls containing aligned holes, said extension comprising:

• (a) an open upper end and an open lower end;
• (b) a first side wall and a second side wall, each having an aperture near the upper end of the extension and each being slid upwards along each corresponding side wall of and within a channel-shaped adjustable leg;
• (c) a back wall extending between and along and being integral with the first side wall and the second side wall;
• (d) a spring-loaded releasable lock being positioned adjacent to the upper end of and between the first side wall and the second side wall of the extension and comprising:
• i. a spring-encompassed casing,
• ii. a capped screw, having a tip, to be manually moved longitudinally within the spring-encompassed casing, with the capped screw being moved upwards when the releasable lock is to be repositioned and being moved downwards when the releasable lock has reached the desired position;
• iii. two side pins shaped to fit within the apertures in the first and second side wall of the extension and in the holes of the adjustable leg, with the side pins being moved out of the holes in the side walls of the adjustable leg before the extension is free to slide along the adjustable leg, and
• iv. a wish-bone shaped finger grip connecting the two side pins to the spring-encompassed casing, with the side pins moving inwards when the finger grip is being turned downwards and with the side pins moving outwards when the finger grip is being turned upwards;
• (e) a lock support being attached to the back wall near the upper end of the extension, with the lock support providing a support for the releasable lock and limiting inward movements of the side pins;
• (f) two retaining posts being attached to the back wall and positioned adjacent to and immediately below the lock support, with the side pins being out of the holes of the adjustable leg when the finger grip is positioned between and held by the retaining posts;
• and
• (g) a base attached to the back wall at the lower end of the extension;
• said method comprising:
• (a) moving the side pins of the releasable lock inwards and out of the corresponding hole of the adjustable leg, such that the extension is removed from registration with the adjustable leg and is slid along the adjustable leg;
• and
• (b) moving the side pins of the releasable lock outwards through the corresponding aperture of the extension and into the corresponding hole in the adjustable leg, such that the extension engages with the adjustable leg and a new height is set for the workpiece.