Vinery ladder

1902. The vinery-ladder (fig. 510.) is used for thinning grapes. The three-quarter-inch iron rod (a a), which reaches from one end of the vinery to the other, is suspended about two feet from the rafters by the iron rods (b b), the ends of which are turned up to support it. On the rod hang the irons (c) which support the ladder (d). This ladder is very useful for pruning vines and thinning grapes which are on a roofed trellis over a stage of greenhouse plants.