| 摘要 |
A spring for urging the application brakes of a fork-lift truck is overpowered by a toggle joint moved toward its dead center by depression of the knee thereof by the weight of the operator in the operator's seat. The mechanical advantage provided by the toggle joint between the seat and the brake-applying spring is such that the seat may bounce normally without permitting application of the brake. Further, the seat can be tilted forwardly for access to the truck without additional attention to disconnection and reconnection of parts.
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