Metal tools and implements – making – Saw-making or furbishing device or machine – Sharpening and gumming
Patent
1990-06-26
1992-06-02
Parker, Roscoe V.
Metal tools and implements, making
Saw-making or furbishing device or machine
Sharpening and gumming
76 77, 76 805, B23D 6316
Patent
active
051177137
ABSTRACT:
An arrangement in automatic saw chain grinders of the kind which includes a mechanism (30, 47) for feeding the cutter links (36) of a saw chain (22) to be ground to a predetermined grinding location on a chain support (14), and also a movable grinding machine (18, 19) for grinding the cutting edge (53) of a cutter link (36) present in the grinding location. The grinding location is defined by a chain feed and/or stop finger (46) against which the rear edge (40) of the cutter link (36) abuts in the grinding location. The feed mechanism (30, 47) includes a rotating or indexing saw-chain drive which is driven by an electric motor (32). For the purpose of eliminating the risk of cutting edges being ground wrongly or of the grinding process being interrupted because of irregularities in the link sequence of the saw chain (22), the finger (46) has mounted thereon a detecting device (44) for distinguishing between cutter links of right-hand and left-hand configurations and for checking that a cutter link in the grinding location is not displaced therefrom during the course of a grinding operation.
REFERENCES:
patent: 3592085 (1971-07-01), Arnson
patent: 4287793 (1981-09-01), Silvey
patent: 4416169 (1983-11-01), Silvey
patent: 4643050 (1987-02-01), Silvey
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