Adjustable intermittent incremental advance system
AssigneeForet Systems, Inc.
InventorPierre G. Foret
Life of this patent
Estimating the term…
Abstract
An adjustable intermittent incremental advance system is provided having a rotatable shaft for driving a work take-off in a start-stop rotary incremental advance. A clutch disk and brake disk alternately permit or stop rotary motion of the shaft to provide the intermittent advance. A flywheel is attached to the rotary shaft and acts through a crank arm driven by a motor to provide rotary power to the shaft for predetermined incremental movement. First and second sensors provide timed application of the clutch and brake disks to provide accurate incremental advance and prevent accumulated error in length of advance during prescribed periods of operation of the system.
Claims10
A rotating shaft driven, intermittent incremental advance system comprising
- a rotatable shaft for driving a work take-off in stop-start rotary increments,
- a clutch disk operatively engaged with said shaft,
- a brake disk operatively engaged with said shaft,
- a first stepper disk means operatively engaged with said shaft for movement therewith and comprising a plurality of circularly arranged indicator first indexing means,
- a rotary work take-off device fixed to said shaft,
- a flywheel means carrying a portion of an eccentric, pivotally mounted crank arm,
- a second drive portion of said crank arm being eccentrically pivotally mounted on a drive shaft,
- said drive shaft carrying a second stepper disk means operatively engaged therewith for movement therewith and having a second indexing means mounted for rotating movement therewith,
- a drive means for providing constant rotation to said drive shaft translated to incremental movement of said flywheel means with stop, start movement of said rotatable shaft being actuated by said brake disk and clutch disk respectively,
- and first and second sensor means engaged with said first and second indexing means to provide for said stop, start movement in accurate increments and without accumulated incremental distance error from one incremental movement to another.
Dependencies are inferred from the claim text.