Abstract: A stackable chair has a leg frame on which a seat and back are mounted. The leg frame comprises two lengths of flat tubing of dumb-bell shaped cross section bent to provide contiguous parallel portions which extend centrally transversely of the seat, portions extending from the ends of the parallel portions toward corner regions of the seat and portions bent downwardly to form the legs which are substantially in a vertical fore-and-aft plane but incline forwardly and rearwardly. When the chairs are stacked the legs of dumb-bell cross section nest with one another. The seat has a width substantially equal to the overall width of the leg frame and has cut-out corner regions to accommodate legs of superposed chairs when stacked. Plastic gliders at the bottom of the legs have support portions extending up along the legs for supporting superposed stacked chairs.

Abstract: Adjusting mechanism for the step-wise height adjustment of the backrest of a work chair comprises two U-form guide bars embracing side edges of a rectangular support arm extending up from the seat of the chair. A C-form slide, on which the backrest is mounted, embraces and is slidable on the guide bars. One of the guide bars has a wider flange in which locking recess are formed. A locking lever pivotally mounted on the slide has a nose portion engageable in the locking recesses to hold the slide and hence the backrest in selected fixed position. The locking lever is spring biased to locking position and is releasable by a handle at the side of the slide so that the locking lever can be released and the slide, with the backrest, moved up or down with one hand.

Abstract: A conference table assembly comprises a plurality of conference tables each having a top providing a writing surface for a user, and a plurality of accessory units sandwiched between adjacent tables. Each of the accessory units has a top which is the same thickness as the conference table tops and is supported flush with them. In the accessory unit top there is an opening into a trough-like housing which is divided into compartments housing electrical and electronic components. The opening is closed by a removable panel on which are mounted such components as a goose neck lamp, microphone, keyboard, control elements, indicating instruments, etc. Preferably an accessory unit is provided between two user positions so that it can serve both. Each accessory unit preferably has a leg and foot so that it is self supporting and is provided with quick-release fasteners for connecting it to the tables.