Device for dumping chute

In combination in a vertical dumping shaft structure with a dumping chute, such as a refuse or laundry chute, directed obliquely downward and having an outlet opening into a substantially vertical dumping shaft,

• the improvement comprising a gate at the end of said chute outlet opening into the dumping shaft,
• the said gate being pivoted at its upper margin on a substantially horizontal axis so as to close the chute outlet when at rest,
• the lower part of the gate being operable to swing out into said shaft to open in response to the force of dumped goods in the chute to thereby cause the dumped goods to enter the dumping shaft,
• said gate forming part of the inner wall surface of the shaft and the shape of said gate on the side facing said dumping shaft substantially coinciding with the shape of the inside of said dumping shaft,
• the upper and lower margins of said gate overlapping the adjacent edges of the structure forming said dumping shaft when said gate is in the closed position,
• the upper margin of said gate overlapping said structure on the outside relative to the shaft and the lower margin overlapping said structure on the inside of said shaft to thereby avoid upward facing abruptly protruding marginal edges at said gate so that the combination of the walls of said shaft and the inner surface of said gate serve to convey dumped goods smoothly past said gate,
• said gate being substantially narrower than said opening of said chute into said dumping shaft to thereby provide air communication for free movement of contaminated air from said chute into said shaft.