An extendable auger conveyor including a screw thread sleeve snugly and slidably receiving a rotary drive shaft having a non-round cross section, both housed within a pair of telescoping sections of a casing having an infeed port intermediate the length of the supporting casing section.
대표청구항▼
I claim: 1. An improved extendable conveyor for use with a combine having rotary drive means, comprising: (a) an auger casing having an infeed end and an opposite exit end, said casing comprising a telescoping extendable section and support section, said extendable section including said exit end,
I claim: 1. An improved extendable conveyor for use with a combine having rotary drive means, comprising: (a) an auger casing having an infeed end and an opposite exit end, said casing comprising a telescoping extendable section and support section, said extendable section including said exit end, said support section including said infeed end and an infeed port distanced from said infeed end just less than a maximum amount of extension to be provided by said telescoping, said casing encasing an essentially horizontal transport auger; (b) said transport auger comprising a rotary drive shaft, having a non-round cross section, mechanically linked to the rotary drive means of the combine and extending within said casing from said infeed end to a tip near said exit end, said auger further comprising an outstanding screw thread sleeve defining a central longitudinal cavity sized to snugly receive said drive shaft and slidable thereon. 2. An improved extendable conveyor described in claim 1 above, said sleeve having a bearing end devoid of said outstanding screw thread, and further comprising a bearing collar having an outer perimeter in close slidable contact with said casing, said bearing collar defining a central aperture sized to snugly receive said sleeve bearing end rotatable therein, said bearing collar slidable with said sleeve along said drive shaft. 3. An improved extendable conveyor described in claim 2 above, said bearing collar affixed to said sleeve bearing end and rotatable by the sleeve bearing. 4. An improved extendable conveyor described in claim 3 above, said bearing collar perimeter including brush bristles. 5. An improved extendable conveyor described in claim 1 above, said support section further comprising an outward end, said telescoping comprising said extendable section telescopically received within said support section and slidably extendable outward from said outward end. 6. An improved extendable conveyor described in claim 1 above, said support section further comprising an outward end, said telescoping comprising said extendable section telescopically received over said support section and slidably extendable outward from said outward end. 7. An improved extendable conveyor described in claim 1 above, said infeed port situated on the top of said support section. 8. An improved extendable conveyor described in claim 1 above, said infeed port situated on the underside of said support section. 9. An improved extendable conveyor described in claim 1 above, said infeed port situated on a lateral side of said support section. 10. An improved extendable conveyor described in claim 1 above, said telescoping further comprising actuation by a mechanically powered means of telescoping. 11. An improved extendable conveyor described in claim 10 above, said means of telescoping selected from the group consisting of a telescoping actuation means such as a hydraulic cylinder with rod, a pneumatic cylinder with rod, pulley systems, rack and pinion systems, and electric screw drive shaft systems, and combinations thereof. 12. An improved extendable conveyor described in claim 10 above, said means of telescoping comprising a hydraulic cylinder with rod. 13. An improved extendable conveyor described in claim 10 above, said support section further comprising an apical slot near its outward end and bridged by a down-opening C-channel, said extendable section further comprising an upstanding T-ridge having an upright portion slidably received with said slot and having uppermost arms captured by said down-opening C-channel. 14. An improved extendable conveyor described in claim 1 above, further comprising a feeder conveyor feeding transportable items through said infeed port. 15. An improved extendable conveyor described in claim 14 above, said feeder conveyor selected from the group consisting of auger conveyors, chain-and-paddle conveyors, and vacuum system conveyors, and combinations thereof. 16. An improved extendable conveyor described in claim 15 above, further comprising the combine having a feeder bin with a transport system cooperatively related to said feeder conveyor. 17. The combine in combination with the improved extendable conveyor described in claim 1 above. 18. An improved extendable offloading conveyor for use with a combine having rotary drive means, comprising: (a) an auger casing having an infeed end and an opposite exit end, said casing comprising an extendable section including said exit end and being telescopically received within a support section including said infeed end and an outward end, said casing sections mechanically linked by a telescoping means comprising a hydraulic cylinder attached to said support section and an extension rod telescopically extendable from and retractable into said hydraulic cylinder and attached to said extendable section, said support section including an infeed port atop said support section and distanced from said infeed end slightly less than a maximum amount of extension provided by said telescoping, said support section further comprising a outward end, said casing encasing an essentially horizontal transport auger; (b) said transport auger comprising a rotary drive shaft, having a non-round cross section, mechanically linked to the rotary drive means of the combine and extending within said casing from said infeed end to a tip near said outward end, said auger further comprising an outstanding screw thread sleeve defining a central longitudinal cavity sized to snugly receive said drive shaft and slidable thereon, said sleeve having a journal end rotatably captured by said exit end of said extendable section, and an opposite bearing end devoid of said outstanding screw thread and further comprising a bearing collar having an outer perimeter in close slidable contact with said casing, said bearing collar defining a central aperture sized to snugly receive said sleeve bearing end rotatable therein, said bearing collar slidable with said sleeve along said drive shaft, (c) said telescoping by said hydraulic cylinder and extension rod extending said casing extendable end and thereby slidably extending said auger sleeve outward on said rotary drive shaft, thereby lengthening said auger beyond said drive shaft. 19. A method of using an extendable conveyor for use with a combine having rotary drive means, comprising the steps of: (a) mechanically linking, to the rotary drive means, an improved extendable conveyor comprising an auger casing having an infeed end and opposite exit end, said casing comprising a telescopic extendable section and support section, said extendable section including said exit end, said support section including said infeed end and an infeed port distanced from said infeed end just less than a maximum amount of extension to be provided by said telescoping, said casing encasing an essentially horizontal transport auger; said transport auger comprising a rotary drive shaft, having a non-round cross section, mechanically linked to the rotary drive means of the combine and extending within said casing from said infeed end to a tip near said exit end, said auger further comprising an outstanding screw thread sleeve defining a central longitudinal cavity sized a snugly receive said drive shaft and slidable thereon: (b) actuating a feeder conveyor emptying a bin, as well as the extendable conveyor; and then either; (c) extending said extendable conveyor while said extendable conveyor is operating, or retracting said extendable conveyor while an extendable conveyor is operating.
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