초록 ▼

The forks of a conveyor tray are hingedly mounted between two end forks rdly interconnected by a cross-bar and through which electrically powered drive chains impart movement to the tray along a vertical conveyor path. The hingedly mounted tray forks are releasably held in normal load-supporting pos

The forks of a conveyor tray are hingedly mounted between two end forks rdly interconnected by a cross-bar and through which electrically powered drive chains impart movement to the tray along a vertical conveyor path. The hingedly mounted tray forks are releasably held in normal load-supporting positions on the cross-bar in alignment with the two end forks, so that they may be pivotally displaced upwardly from such positions by travel resistance forces in excess of a safety level.

대표청구항 ▼

[ What is claimed is:] [7.] In combination with a conveyor including a tray formed by a plurality of forks having load supporting surfaces thereon and drive means connected to two of the forks for powered movement of the tray along a conveyor path, the improvement residing in: means fixedly intercon

[ What is claimed is:] [7.] In combination with a conveyor including a tray formed by a plurality of forks having load supporting surfaces thereon and drive means connected to two of the forks for powered movement of the tray along a conveyor path, the improvement residing in: means fixedly interconnecting said two of the forks in spaced relation to each other for maintaining the load supporting surfaces thereon in alignment with a common plane; and means releasably mounting the other of the forks on said interconnecting means for displacement from operative positions in which the load supporting surfaces thereon are in alignment with said common plane.