Authors: Bigsby, F. W. And K. K. Barnes
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Published in: CBE Journal » CBE Journal Volume 6 (1964)

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Description: The three-point implement hitch came into general use after 1939 following a development period of about twenty years. Three - point hitches have gained popularity because the implement and tractor become a compact unit easily maneouvered in limited space. Control of the implement and transportation from field to field are simplified when an implement is attached by a three - point hitch. The two main types of three-point hitches in general use have been de scribed by Clyde (1). The first type, known as the free-link hitch, is so named because the lifting links are free of any load during normal operation. The depth of operation is con trolled by adjusting the length of the top link which controls the angle the implement makes with a plane parallel to the soil surface. Because the links are not parallel this angle changes as the implement enters the soil. The implement will then reach equilibrium at some point determined by the length of the top link. The second type, the restrained link hitch, derives its name from the fact that the lift links hold the implement in the desired operating position. The con figuration of the linkage is such that the implement seeks a depth greater than that desired before reaching equilibrium. The hydraulic system controls are connected into the link age system so that either the draft or the position of the implement may be used to control the hydraulic system.

Keywords: techniques of experimental stress analyses and statistics for determination of forces in mounted implement linkages
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Citation: Bigsby, F. W. and K. K. Barnes 1964. TECHNIQUES OF EXPERIMENTAL STRESS ANALYSES AND STATISTICS FOR DETERMINATION OF FORCES IN MOUNTED IMPLEMENT LINKAGES. Canadian Agricultural Engineering 6(1):4-7.
Volume: 6
Issue: 1
Pages 4 - 7
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Date: 1964
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Coverage: Canada
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