#DRAFT CONTROL ON TRACTOR MANUAL#
tractive forceĭraft control systems of the general type referred to above have long been known in the art, the vast majority of which depend upon some form of hydraulic power lift, or the like, controlled by a valve which is actuated first, in response to a manual setting to select a working depth and second, in response to changes in draft force or load wherein the selected depth is too deep, for example, to enable the tractor-implement outfit to proceed at a desired rate. A01B63/112- Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements to control draught load, i.e.A01B63/111- Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means regulating working depth of implements.A01B63/10- Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors operated by hydraulic or pneumatic means.A01B63/02- Lifting or adjusting devices or arrangements for agricultural machines or implements for implements mounted on tractors.A01B63/00- Lifting or adjusting devices or arrangements for agricultural machines or implements.A01B- SOIL WORKING IN AGRICULTURE OR FORESTRY PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL.A01- AGRICULTURE FORESTRY ANIMAL HUSBANDRY HUNTING TRAPPING FISHING.238000006011 modification reaction Methods 0.000 description 1.238000006243 chemical reaction Methods 0.000 description 2.230000005540 biological transmission Effects 0.000 description 2.241001236653 Lavinia exilicauda Species 0.000 description 2.238000003199 nucleic acid amplification method Methods 0.000 description 4.Assignors: MOON, SEATON, TREICHEL, RICHARD Application granted granted Critical Publication of US4438818A publication Critical patent/US4438818A/en Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Priority to US20923980A priority Critical Application filed by Deere and Co filed Critical Deere and Co Priority to US06/390,012 priority patent/US4438818A/en Assigned to DEER & COMPANY reassignment DEER & COMPANY ASSIGNMENT OF ASSIGNORS INTEREST. Original Assignee Deere and Co Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US06/390,012 Inventor Richard Treichel Seaton Moon Current Assignee (The listed assignees may be inaccurate.
#DRAFT CONTROL ON TRACTOR PDF#
Google Patents Draft control system for agricultural tractorĭownload PDF Info Publication number US4438818A US4438818A US06/390,012 US39001282A US4438818A US 4438818 A US4438818 A US 4438818A US 39001282 A US39001282 A US 39001282A US 4438818 A US4438818 A US 4438818A Authority US United States Prior art keywords draft valve tractor lever responder Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US4438818A - Draft control system for agricultural tractor
US4438818A - Draft control system for agricultural tractor
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