Title: Apparatus for drying grain

Abstract: The invention comprises an inverted frusto-conical shaped perforated floor which is mounted in a conventional grain drying bin in a raised position relative to the base floor thereof. The perforated floor has a plurality of grain discharge openings formed therein, each of which are selectively closed by a trough-like valve. The valves have varying lengths to obtain better grain distribution on the base floor. The valves are controlled by a manually operated means. A tube tensioner is provided on the bottom surface of the perforated floor to stiffen and strengthen the perforated floor. A series of bands are mounted above the perforated floor to maintain the level of the grain being dried substantially parallel to the upper surface of the perforated floor for evenness of drying. The grain is dumped on the perforated floor and the dried air is passed upwardly through the perforated floor to dry the grain. The dried grain flows from the perforated floor through the openings onto the valve for even distribution of the base floor.

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Inventors: Sietmann, Vernon H. (Laurel, IA, US)
Smith, Raymond L. (Laurel, IA, US)
Keese, Larry S. (Gilman, IA, US)

Application Number: 597582
Filing Date: 1975-07-21
Publication_date: 1977-07-19
Assignee:
Primary Class(es): 34/174 34/233, 34/560, 52/82, 52/192, 454/182
Other Classes:
US Patent Ref:

2858620	Nov, 1958	Naylor	34/174.
3426669	Feb, 1969	Peterschmidt	98/55.
3479748	Nov, 1969	Sietmann	34/174.
3583112	Jun, 1971	Kennedy	52/82.
3849901	Nov, 1974	Sietmann et al.	34/52.
3908329	Sep, 1975	Walters	52/82.

Other Refs:
Primary Examiner: Sprague, Kenneth W.
Assistant Examiner: Yeung, James C.
Attorney: Zarley, McKee, Thomte & Voorhees