Cutting – Means to drive or to guide tool – With simple rectilinear reciprocating motion only
Patent
1990-03-13
1992-03-17
Eley, Timothy V.
Cutting
Means to drive or to guide tool
With simple rectilinear reciprocating motion only
83748, 83632, 74603, 74604, B26D 110
Patent
active
050957937
ABSTRACT:
A vibrational dampening system in a cutter head having an elongate knife reciprocated to cut a ply or a stack of plies of sheet material comprises a drive pulley having an eccentrically mounted pin on which is journalled a linkage connecting the drive pulley to the knife, and two driven pulleys located on either side of the drive pulley synchronously interconnected with the drive pulley by a belt having spaced apart teeth formed on each side. The drive pulley and each of the two laterally disposed driven pulleys has a counterweight which rotates 180 degrees out of phase with the rotation of the eccentric pin in order to cancel the vertical forces generated by the reciprocating knife and its associated connecting linkage. The two laterally disposed driven pulleys rotate in an opposite direction relative to the rotational direction of the drive pulley in order to cancel any side-to-side forces generated when the counterweights move between vertically oriented positions.
REFERENCES:
patent: 4048891 (1977-09-01), Pearl
patent: 4924727 (1990-05-01), Pearl et al.
Eley Timothy V.
Gerber Garment Technology, Inc.
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