Abstract: A braked twin-wheel caster assembly consists of five components--a body, two indentical wheels, a metal wheel spindle and a locking lever. A molded brake lever, rockable between a wheel-locking position and an unlocking position in which the wheels are free to turn, has an intermediate mounting portion which pivots in a bearing recess in the moulded body. The bearing recess is disposed towards the trailing end of the body, and it is open at an outer aperture and also at an inner aperture. An outer end portion of the locking lever projects through the outer aperture to provide an operating member for external operation. An inner end portion of the locking lever projects from said inner aperture to provide a locking member for engagement with the caster wheels. The intermediate portion of the locking lever is molded so that it can be resiliently compressed sufficiently for it to be inserted into the bearing recess through the outer aperture.

Abstract: A twin-wheel castor incorporates brake means comprising an externally-operable brake member which is rockably mounted in a body of the castor for engagement with the wheels of the castor to lock the wheels against rotation. The brake member has a detent projection engageable with a formation of the body to retain the brake member in the braking position, and projecting locking stubs which are engageable between internally projecting webs of the wheels to lock the latter against rotation. The locking stubs are resiliently mounted so that their connection to the main body of the locking member on which the detent projection is mounted will yield, should locking movement of the locking stubs be blocked by engagement with the edge of one of the webs, thus allowing the detent projection to engage the body formation and retain the locking member in the locking position. Thus, as soon as the wheel concerned turns, the resilient mounting of the locking stubs causes the latter to move into a wheel-locking position.