Welding bench

Claim 1

A small welding bench suitable for use in industrial establishments and schools, and having a bench top that is adjustable in height, inclination and rotational position, comprising, in combination: (1) a substantially horizontal base support; (2) a welding bench top; (3) a telescopic height adjusting assembly for the bench top comprising: (a) an upstanding outer casing substantially rectangular or square in cross-section and having four corners, rigidly carried on the base support; (b) an upstanding inner casing having one end extending upwardly beyond the upper end of the outer casing and substantially rectangular or square in cross-section with four corners, telescopically mounted within the outer casing, the four corners thereof slidably engaging the four corners of the outer casing for telescopic movement therewithin; the inner casing having side portions bent inwardly, out from sliding engagement with the corresponding side portions of the outer casing; (c) adjusting means interconnecting two opposite sides of the inner casing for adjusting the spacing of the inwardly-bent side portions thereof; (4) an inclination-adjusting and rotational-adjusting assembly for the bench top comprising: (a) a supporting structure for the bench top pivotably mounted upon the upper end of the inner casing, for rotation and pivoting about a vertical axis of the inner casing, including means at one side of the bench top mounting the bench top to one side of the supporting structure for pivoting movement about a horizontal axis; (b) means for locating the bench top in a selected inclined position in relation to the supporting structure; and (5) means for manually and telescopically moving the inner casing and with it the bench top up and down, comprising: (a) first and second link means, each having first and second ends, the first end of the first link being connected to the inner casing, and the first end of the second link being connected to the second end of the first link. (b) means disposed outside the inner casing for manually operating the telescopic movement of the inner casing, and connected to the second end of the second link; and (c) a pneumatic balance spring interconnecting the first and second links.