Registers – Transfer mechanism – Traveling pawl
Patent
1974-11-29
1976-11-16
Botz, Eugene G.
Registers
Transfer mechanism
Traveling pawl
834254, 83499, 3401725, 318685, 318601, B26D 726
Patent
active
039926141
ABSTRACT:
A system for controlling the spacing between a plurality of saw blades. Precise control is insured by cascading an electrical feedback system in series with a mechanical feedback system.
The electrical feedback system includes a position register for recording the actual location of each saw blade, a command register for recording the desired position of each saw blade, a comparator for generating an error signal corresponding to the difference between the actual and desired saw positions, and a stepper motor responsive to the error signal. The stepper motor drives a control shaft having a shaft encoder secured thereto which feeds pulses back to increment or decrement the position register, thereby synchronizing the contents of the position register to the actual position of the stepper motor.
The mechanical feedback system includes a hydraulic cylinder for controlling the position of the saw, a feedback shaft having an angular position determined by the position of the saw, and a hydraulic servo valve which actuates the hydraulic cylinder in either direction, depending on the relative position between the feedback shaft and the control shaft.
REFERENCES:
patent: 2434668 (1948-01-01), May
patent: 2961015 (1960-11-01), Randall
patent: 2992661 (1961-07-01), Burelbach
patent: 3139570 (1964-06-01), Jacobson et al.
patent: 3448360 (1969-06-01), Pohl
patent: 3728607 (1973-04-01), Isak
Botz Eugene G.
Pre-Con, Inc.
LandOfFree
Saw positioning system for sawmill edger does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Saw positioning system for sawmill edger, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Saw positioning system for sawmill edger will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-672314