Abstract: A spindle assembly for a chair or the like includes an outer tube tapered to fit in a chair base, an inner tube having an upper end tapered to fit the chair control, and a bushing near the upper end of the outer tube to guidingly receive the inner tube therein. A screw is provided in the assembly and threadedly engaged with the inner tube, with means to prevent the screw from rotating in the absence of any axial external load on the assembly, whereby rotation of the inner tube with respect to the outer tube will cause a change of overall length of the assembly, to provide a height adjustment for a chair assembly secured thereto. Spring means employed in the assembly resiliently support the seat under a seating load and also accommodate disengagement of a rotational lock to permit swiveling of the seat with respect to the base without any change of overall height.

Abstract: A caster assembly is provided with a housing readily mountable into rectangular, square or round tubing and securable therein. A lever operable in a horizontal plane about the swivel axis is pivotable from a first position for free swiveling and rolling of the caster, to a second position for swivel locking in the trailing position, to a third position for swivel and wheel locking. It is readily attached to a centralized control handle on a bed or other object to be supported by the caster.

Abstract: An adjustable gas cylinder control comprising the combination of a single tube defining a single cylinder bore, a single piston slidable in the tube and dividing the tube into a first and a second compartment, a first and a second end plug adapted to sealably fit within the ends of the tube, a single spindle or rod fixedly mounted to the piston and reciprocable in the tube, gas inlet means for charging the sealed first compartment of the tube with gas, and valve means mounted in the piston and spindle for allowing gas flow between the first and second compartments of the tube thereby adjusting the position of the piston in the tube. The tube itself is made of rolled welded sheet metal with its ends having a simple cold formed impression holding the first and second end plugs. Also provided is actuating means including a lever connected to the spindle for actuating the valve means thereby allowing gas flow between the compartments of the tube.

Abstract: A chair tilting control having a bracket connectable to a seat and a bracket connectable to a base, the base bracket being entirely within the seat connector bracket and having a pair of elongated flat spring bars urging the seat connector bracket against the base connector bracket to the no-tilt condition, and a manually operable spring adjustment screw or lever driving a cam follower to increase or decrease the non-tilting action of the spring.

Abstract: A caster has a horn of semi-circular configuration about an axle receiving apertured boss, a web extending radially outwardly from the boss to a semi-cylindrical flange and a pair of wheels, one on each side of the horn, the tread of the wheels being flush with the outer cylindrical surface of the flange. Hub shields are mounted on the wheels in such manner as to avoid load transmission to the shields, yet accommodating a variety of appearance features, ease of installation and reliable retention of the shields in place of the wheels.