| 摘要 |
Velocity of the main shaft(45) is transformed by pressure. The pressure is distributed to two triangular pieces in the sewing machine. An oil pump(51) is connected to the main shaft(45) and an oil tube for sending the oil is fixed to the oil pump. The pressure is translated to the two triangular pieces by the oil. To create some velocity, the pressure follows the former, but is controlled by a translating gear to prevent it from exceeding the appropriate velocity. When the machine is driven at up to 10000 r.p.m., the device maintains the exact pressure from the start of operation to end. The pressure is controlled by a control lever.
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