Importance

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Abstract

A new apparatus for turning up and down spectators' seats for a telescopic seating system of the type including a plurality of movable platforms which are arranged in tiers is disclosed. The apparatus essentially comprises a frame fixedly mounted on a movable platform, a foot member fixedly secured to the housing of a seat, a stopper link turnably supported on the foot member, an unlocking member turnably supported on the frame and a leaf spring operatively connected to the rear end of the stopper link. The foot member is formed with projections at the rear end part thereof which are adapted to abut against a front nose of the adjacent upper movable platform as the first-mentioned movable platform is displaced forwardly to the extended position. The foot member assumes the upright standing position by turning up on the frame together with the housing of the seat. The foot member is kept in the upright standing state while the stepped portions on the stopper link are engaged to the rear ends of the stopper pieces of the frame. As the movable platform is displaced backwardly to assume the retracted position, the inclined surface on the unlocking member abuts against the front nose of the adjacent upper movable platform whereby the stopper link is released from the engaged state and the foot member is then caused to turn down under the effect of resilient force of the leaf spring.

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First Claim