Chain saw components and system for cutting masonry and the like

Details Chain saw components and system for cutting masonry and the like Chain saw components and system for cutting masonry and the like

1988-04-14

1990-05-01

Schmidt, Frederick R.

Stone working

Sawing

Endless

125 22, 30381, 83830, 51266, 51267, B28D 108

Patent

active

049209477

ABSTRACT:
A chain saw for cutting aggregate materials including a saw chain of interconnected center links and side link paris composed of heat-treated steel. Certain pairs of the side links support diamond impregnated matrix cutting blocks that are laser welded to the side links in a process where the laser beam is focused and orbited along the juncture to avoid stress risers in the steel material of the supporting side links. Drawing down of the zone adjacent the weld also is controlled to avoid stress risers. The guide bar is provided with a pattern of enclosed channels for directing water to the guide bar groove at spaced positions on the periphery of the guide bar edge for flushing away the aggregate dust generated by the cutting process. The channels are angularly directed toward the guide bar nose and have incrementally increased cross sections on progressing toward the guide bar nose to enhance the flushing operation. To reduce adhesvie wearing of the bearing surfaces, as between the saw chain components and as between the saw chain and guide bar, the guide bar rails, the rivet holes, and depending center link tang portions of the saw chain are hard-surfaced.

REFERENCES:
patent: 2869534 (1959-01-01), Stihl
patent: 2912968 (1959-11-01), Stihl
patent: 3593700 (1971-07-01), McNulty
patent: 3613749 (1971-10-01), Geurian
Mark's Standard Handbook for Mechanical Engineers, pp. 13-42, "Surfacing by Welding".

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