| 摘要 |
A relatively simple toe jack includes a base; a cylinder mounted on the base and carrying a plunger; a load carrying sleeve mounted on the plunger; a load saddle and a load engaging toe on the sleeve; and a two-stage pump carrying a reservoir mounted on the base beside the cylinder, the pump including a handle specifically shaped to fit into a lever which operates the piston of the pump. The plunger is returned to a rest position by a spring mounted in the plunger and connected to the bottom of the cylinder.
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