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In a chisel-type convergence for a chip bin in a wood chip pulping process and system, an improvement in uniformity of discharge of the chips from a chips bin or the like is provided. The bin includes a conventional hollow substantially right circular cylindrical first, upper, body portion, a second

In a chisel-type convergence for a chip bin in a wood chip pulping process and system, an improvement in uniformity of discharge of the chips from a chips bin or the like is provided. The bin includes a conventional hollow substantially right circular cylindrical first, upper, body portion, a second, hollow transition, portion connected to the bottom of the first portion, and a third transition portion, below the second portion and above a metering device, such as a metering screw or a star-feeder. The third transition operates less than full of chips, and provides relief from chip compaction. The third transition portion may include stationary or movable baffles, and/or a metering screw may be provided which can pivot downwardly in order to minimize or eliminate the thrusting force against the bin or upper chips to facilitate discharge.

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[What is claimed is:] [1.]a hollow substantially right circular cylindrical first, main body portion having a substantially vertical central axis, a top and an open bottom;a top wall closing off said top of said main body portion, and allowing introduction of particulate material into said hollow ma

[What is claimed is:] [1.]a hollow substantially right circular cylindrical first, main body portion having a substantially vertical central axis, a top and an open bottom;a top wall closing off said top of said main body portion, and allowing introduction of particulate material into said hollow main body portion mounted thereon;a second hollow transition, portion connected to said bottom of said first body portion having a substantially circular cross-section open top and a substantially rectangular cross-section open bottom and a first width dimension, and a larger cross-sectional area at said top thereof than at said bottom thereof, and opposite non-vertical gradually tapering side walls;at least one metering device mounted below said open bottom of said second transition portion, in a housing;a third, hollow transition, portion located between said second hollow transition portion and said metering device housing and having a height;a discharge operatively connected to said metering device housing;said at least one metering device being operable to move particulate material from said bottom of said third transition portion to said discharge;wherein the height of said third hollow transition portion is at least equal to said first width dimension of said open bottom of said second hollow transition portion; andone or more baffles provided between the second transition portion and the third transition portion for extending the converging side walls of the second transition portion into the third transition portion, and to provide radial relief for material flowing into said third transition portion.