Abstract: A cartridge is provided for use as a joint between links of an endless track chain. The cartridge is designed for assembly prior to attachment of the cartridge to the links. An associated method is disclosed.

Abstract: A cartridge is provided for use as a joint between links of an endless track chain. The cartridge is designed for assembly prior to attachment of the cartridge to the links. An associated method is disclosed.

Abstract: A two piece seed boot for a seeding machine has a upper cast portion and a lower cast portion. Both the upper and lower portions are provided with aligned seed passages which received metered seed from the seed tube and discharge the metered seed to the planting furrow. The upper cast portion is mounted to the planting unit frame and the seed tube by an integral mounting clevis. The lower cast portion is provided with first and second upward extending mounting lugs. The first mounting lug is received in a recess formed in the upper portion. The second mounting lug engages the planting furrow side of the upper portion. The rear of the upper and lower portions are provided with aligned mounting holes through which a mounting bolt passes securing the lower portion to the upper portion.

Abstract: An opener for use in varying ground conditions, ranging from no-till to conventional full tillage conditions, includes an adjustable down pressure control and a down pressure spring and tension link assembly which selectively provide a limited free float opener condition or a conventional down pressure spring controlled bias condition. A sleeve slidably received by the opener arm and mounted over the lower portion of the tension link assembly allows the opener to free float in loose soil conditions so that only the weight of the opener provides downward bias when the down pressure control is adjusted to a minimum condition. The opener is free to ride up and down to follow irregularities in the ground surface.