Dennison, Scheiner, Schultz & Wakeman
Blade mounting devices for reciprocating cutting tools
 A device for mounting a blade on a reciprocally movable blade carrier of a cutting tool includes a blade pressing member and a blade pressing surface formed on the blade carrier, so that the blade can be pressed against the blade pressing surface by the blade pressing member. A retainer member serves as a guide for the pressing member, so that the pressing member can move in a direction substantially perpendicular to the pressing surface between a first position for pressing the blade against the pressing surface and a second position for releasing the pressing force of the pressing member. An operation member is shiftable relative to the blade carrier and is operable by an operator for moving the pressing member between the first position and the second position. A ball is interposed between the pressing member and the operation member. A contacting surface is formed on the operation member, so that the ball can roll along the contacting surface. 
Makita Corporation
Y Y Y B
Y10T Y10S Y10S B23D
additional additional additional inventional
Michio Shinsuke Mitsuyoshi
Okumura Mori Niinomi