Earth working – Tool – standard or connection – Spring biased or formed tool or tool part
Patent
1978-09-07
1981-04-14
Johnson, Richard J.
Earth working
Tool, standard or connection
Spring biased or formed tool or tool part
172763, 403137, 403148, 267177, A01B 3524
Patent
active
042614236
ABSTRACT:
An earth working implement such as a field cultivator shank for use on a tool bar of a field cultivator includes a mounting bracket having an upper end and a lower end. The mounting bracket is secured at the lower end of the mounting bracket to the tool bar with the upper end of the mounting bracket extending rearwardly and upwardly of the tool bar. A spring shank is pivotably connected to the lower end of the mounting bracket at a first pivot point with the spring shank extending rearwardly and downwardly of the lower end of the mounting bracket. The spring shank terminates in a rounded end portion. A support bracket which securely engages an upper portion of the spring shank is pivotably connected to the mounting bracket and extends immediately beneath and alongside the spring shank for a portion of the spring shank length. A coil spring biases the spring shank downwardly away from the upper end of the mounting bracket. The coil spring is provided between the upper end of the mounting bracket and the rearward end of the support bracket. Pivotably attached to the upper end of the mounting bracket is an upper end of the coil spring. The mounting bracket preferably extends diagonally along the tool bar. An attachment clamp includes at least first and second flange ends having first and second finger portions which extend away from the attaching clamp so as to bias the attaching clamp away from the mounting bracket. A two position lever mechanism permits an adjustment of a pre-load compression of the coil spring.
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Bush Hog Field Cultivators 12000 Series, published for Allied Products Corp., Selma, Ala., 1978.
Hiniker Field Cultivators 1975, Published for Hiniker Co., Mankato, Minn.
Assembly Drawing, Hiniker Press FN011, pp. 8, 9, Published for Hiniker Co., Mankato, Minn.
Brady 2500 Field Cultivators-Advertizing Brochure of Koehring Co., Appleton, Wisc.
Beck Andrew J.
Johnson Richard J.
Koehring Company
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