Fret-saw machine

Details Fret-saw machine Fret-saw machine

1993-07-07

1994-10-04

Smith, Scott A.

Cutting

By tool reciprocable along elongated edge

With tool in-feed

83781, 83783, 83662, B27B 310

Patent

active

053515919

ABSTRACT:
A fret-saw machine comprises a base unit having a table on which a workpiece to be cut is placed, a frame member disposed in the base unit and secured to the table, an arm member having one end portion secured to the frame member and another end portion disposed above the table, a blade holder assembly having first and second slide holder units and first and second blade holder units, the first slide holder unit and the first blade holder units being disposed in the base unit and secured to the frame member and the second slide holder unit and the second blade holder unit being secured to another end portion of the arm member, blade supported at its both ends by the first and second blade holder units and a drive unit supported in the base unit by the frame member and connected to the first slide holder unit to drive the blade. The blade holder unit has a blade nipping member for firmly nipping the blade. A tension applying assembly is disposed to the blade holder assembly for suitably applying the tension to the blade. The blade may carry out its reciprocal motion in an inclined manner. The arm member is fastened so as to be positionally adjustable. The fret-saw machine is further provided with a blade cover having a workpiece pressing function and a rotation preventing structure for the sake of safeness.

REFERENCES:
patent: 101788 (1870-04-01), Tripp
patent: 2208843 (1940-07-01), Hedgpeth
patent: 2609016 (1952-09-01), Bush
patent: 2726687 (1955-12-01), McLachlan
patent: 3570351 (1971-03-01), Spengler
patent: 3921489 (1975-11-01), Johansson
patent: 5018420 (1991-05-01), Plomb

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