Knife growth detector

Details Knife growth detector Knife growth detector

1977-01-13

1977-11-01

Meister, J. M.

Cutting

With randomly actuated stopping means

Responsive to tool detector or work-feed-means detector

83174, 83677, A24C 528, B26D 724, B26D 712

Patent

active

040560228

ABSTRACT:
In a tobacco cutting machine where tobacco is cut by knives mounted on a rotating drum, the knives are advanced as they are worn away. In order to prevent the knives being advanced too far, and becoming damaged by contact with other machine parts, a safety device is provided. This includes a blade positioned near the path of the knife edges to be struck by a knife if the latter is advanced too far. The resultant movement of the blade is amplified by a lever system and is used to trigger a microswitch in the cutter drum drive circuit, whereby when a knife is advanced too far the cutter drum is stopped. The advancing mechanism for the knives includes a ratchet device driven by pulses of compressed air via a piston and cylinder device.

REFERENCES:
patent: 2910103 (1959-10-01), Schreiber

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