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US 4,393,644 AGranted
Two-speed drive apparatus for blower fans
AssigneeSperry Corporation
InventorWayne B. Martenas
Life of this patent
Estimating the term…
Abstract
The blower of a forage harvester is controlled by two-speed belt drives for operating the blower between a first and a second speed for improved power requirements and operating efficiency. The disadvantages of such belt drives is avoided by a selector apparatus which controls a single speed rotating input and provides a two-speed rotating output.
Claims7
In an agricultural machine including a frame, a blower fan supported on said frame for discharging crop material from said agricultural machine, and a main drive shaft supported on said frame for driving said blower fan, the improvement comprising:
- (a) an input shaft connected to be rotated by said main drive shaft;
- (b) said blower fan connected to rotate on said input shaft;
- (c) a first gear connected to rotate with said input shaft;
- (d) a second gear disposed on said input shaft;
- (e) a third gear interconnecting said first and second gears;
- (f) means connecting said third gear to said blower fan;
- (g) means for selectively fixing said second gear to either of said input shaft and said frame;
- (h) said blower fan being rotated at the same speed as said input shaft when said second gear is fixed to, and rotates with, said input shaft;
- and
- (i) said blower fan being rotated at a slower speed than said input shaft when said second gear is fixed to said frame.
7 more elements
Dependencies are inferred from the claim text.