One end of {HEAD ~ each tilt bracket} may be pivotably attached to the spindle and a second end of the tilt bracket can be slidably attached to {TAIL ~ the adjustable bracket} so that when the adjustable bracket and the collar move together axially along the spindle, the second end of the tilt bracket will tilt with respect to the axis of the spindle 
One end of { HEAD ~ each tilt bracket } may be pivotably attached to the spindle and a second end of the tilt bracket can be slidably attached to { TAIL ~ the adjustable bracket } so that when the adjustable bracket and the collar move together axially along the spindle , the second end of the tilt bracket will tilt with respect to the axis of the spindle
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