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SAW BLADE HOLDER FOR PORTABLE RECIPROCATING SAW

  • US 3,802,079 A
  • Filed: 05/15/1972
  • Issued: 04/09/1974
  • Est. Priority Date: 05/15/1972
  • Status: Expired due to Term
First Claim
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1. In a portable reciprocating saw having an elongated saw blade with a cutting edge along a longitudinally extending edge thereof and an end tang, a saw blade support slide mounted for rectilinear reciprocable motion, a saw blade holder on a forward end of the slide for receiving the end tang of the saw blade for supporting the saw blade for extension longitudinally forwardly from the holder, and a motor drive for reciprocating the slide, the improvement wherein the blade holder comprises a generally cylindrical blade support having a generally longitudinally extending slot opening for receiving the end tang of the saw blade, the longitudinally extending slot opening having an axis slightly angularly offset from the axis of rectilinear movement of the slide and the blade support being mounted on the support slide for angular adjustment about the axis of rectilinear reciprocable movement of the slide, securing means for securing the saw blade in the slot opening of the blade support with the saw blade extending longitudinally forwardly from the blade support and for selectively locking the blade support in 90* angularly spaced positions on the saw blade support slide, the blade support slide having a generally cylindrical opening and the blade holder being generally cylindrical and being mounted within the cylindrical opening of the slide for said angular adjustment of the blade support about the axis of rectilinear movement of the slide, the blade support having a pair of spaced blade support parts defining said longitudinally extending slot opening, and the securing means comprising a threaded clamp fastener threaded into one of the spaced blade support parts for engagement with the blade tang for clamping the blade tang within the axially extending slot opening, the threaded clamp fastener having an enlarged circular head and the saw blade support slide having a circumferentially extending slot therein for receiving the clamp fastener and with enlarged generally circular portions for closely receiving the clamp fastener head for angularly securing the saw blade holder to the slide.

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