公开(公告)号：US5768788A

公开(公告)日：1998-06-23

申请号：US695698

申请日：1996-08-12

Applicant: Robert L. Arnold

Inventor： Robert L. Arnold

IPC: B23D51/01 ,  B23D51/12 ,  B27B21/02

CPC classification number: B23D51/01 ,  B23D51/125

Abstract: A hacksaw includes a blade tensioning mechanism attached to the lower portion of the handle and connected to the blade through a blade holder. The end of the blade holder is observed via a tension indicator window at the lower portion of the handle, and the handle has respective predetermined indicia adjacent to the tension indicator window for alignment with the end of the blade holder. The blade tension mechanism includes an adjusting screw threadingly engaging the blade holder, and a crank handle mechanically engaging the adjusting screw for adjusting the tension of the blade. At the desired blade tensioning, the crank handle is mechanically disconnected from the adjusting screw and fits closely in the recess underneath the lower portion of the handle.

Abstract translation: 钢锯包括附接到手柄的下部并通过刀片保持器连接到刀片的刀片张紧机构。 通过手柄下部的张力指示器窗口来观察刀片保持器的端部，并且手柄具有与张力指示器窗口相邻的相应的预定标记，用于与刀片保持器的端部对准。 刀片张紧机构包括与刀片保持器螺纹接合的调节螺钉和与调节螺钉机械接合以调节刀片张力的曲柄柄。 在所需的叶片张紧下，曲柄手柄与调节螺钉机械地断开，并且紧密地配合在手柄下部下方的凹槽中。