B - Operations – Transporting – 27 – B
Patent
B - Operations, Transporting
27
B
143/44
B27B 19/09 (2006.01) B23D 49/16 (2006.01) B23D 51/16 (2006.01)
Patent
CA 1140432
CROSSHEAD FOR SABRE SAWS AND SABRE SAWS INCORPORATING SAME ABSTRACT A crosshead for a scotch yoke mechanism is formed from a generally rectangular blank of sheet steel provided with a generally oval, straight sided opening extending generally transversely medially thereof and a pair of generally circular openings centered and spaced apart from each of the oval opening straight sides, the blank being formed, as on a four slide forming machine generally around two generally parallel lines each being generally extensions of the oval opening straight sides to provide top and bottom generally parallel panels defining a closed end guide track having parallel sides and posi- tioning the generally circular openings in the top and bottom panels and in line to be threaded on a generally cylindrical tubular saw bar of a sabre saw, the blank being further formed to tubular configuration of generally rectangular cross-section by two further parallel bends closing the crosshead on a fourth side on the side of the saw bar opposite the guide track opening. The cross- head is pivotally mounted on the saw bar, a pair of low mass snap or clinch rings disposed in annular grooves on the saw bar on opposite sides of the crosshead adjacent the top and bottom panels.
358544
Gowling Lafleur Henderson Llp
Singer Company (the)
LandOfFree
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