Spring trip standard with positive stop

Details Spring trip standard with positive stop Spring trip standard with positive stop

A - Human Necessities

01

B

A01B 61/04 (2006.01) A01B 23/02 (2006.01) A01B 35/06 (2006.01)

Patent

CA 2298923

A spring trip standard for a tillage implement includes a coil spring freely compressed between an upper spring-abutting surface on the mounting bracket and a tower spring-abutting surface on a casting which is connected by a transverse pivot to the mounting bracket. A tool supporting shank is bolted to the casting and biased downwardly into a ground working position by the spring. The casting includes an integral downstop extending forwardly from the pivot. The downstop contacts the bottom of the bracket when the shank is in the ground working position so that a tension link between the bracket and casting is eliminated. A positive upstop limits upward pivoting of the casting to prevent spring breakage or permanent deformation of the spring. Shoulder areas on the casting contact rear edges of the mounting bracket to limit upward pivoting.

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