Powered coping saw

Details Powered coping saw Powered coping saw

B - Operations, Transporting

23

D

B23D 49/04 (2006.01) B23D 49/00 (2006.01) B23D 49/16 (2006.01) B23D 51/16 (2006.01) B27B 19/06 (2006.01) B27B 19/09 (2006.01) B27B 19/12 (2006.01)

Patent

CA 2305352

The saw (10) includes a frame (12) having an opening (14) with a pair of proximate and distal blade retaining chucks (58, 60) located on respective sides of the opening (14). A saw blade (16) is retained between the pair of chucks (58, 60). A plurality of pulleys (32, 34, 36, 38) are attached in spaced relation to the frame (12) including pulleys (32, 34) on opposed sides of the opening (14). A flexible band (52) is entrained about each of the plurality of pulleys (32, 34, 36, 38), with the band (52) having a first end (54) operatively connected to the proximate blade retaining chuck (58) and a second end (56) attached to the distal blade retaining chuck (60). A reciprocating drive (72) is attached to the proximate blade retaining chuck (58). The reciprocating drive (72) and the flexible band (52) work in conjunction to pull the blade (16) in opposite directions during each cycle of the drive (72). An alternative embodiment of the present invention may take the form of a stationary table saw (fig. 7).

Cette scie (10) comporte un châssis (12) présentant une ouverture (14), deux points de montage de lame (58, 60), l'un proximal, l'autre distal, étant situés de part et d'autre de l'ouverture (14). Une lame de scie (16) est retenue entre la paire de points de montage (58, 60). Plusieurs poulies (32, 34, 36, 38) sont montées à distance les unes des autres sur le châssis (12) qui comporte des poulies (32, 34) de part et d'autre de l'ouverture (14). Une bande flexible (52) passe pour son mouvement sur chacune des poulies (32, 34, 36, 38). En l'occurrence, une première extrémité (54) de la bande (12) est fonctionnellement raccordée au point de montage proximal (58) de la lame, une seconde extrémité (56) étant raccordée au point de montage distal (60) de la lame. Un entraînement va-et-vient (72) est fixé au point de montage proximal (58) de la lame. L'entraînement va-et-vient (72) et la bande flexible (52) coopèrent de façon à tirer la lame (16) en sens opposés pendant chaque cycle de l'entraînement (72). Une autre réalisation de la présente invention peut prendre la forme d'une scie d'établi (Fig. 7).

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