Front bevel indicator/front bevel lock
View Patent ↗A gear and shaft assembly that translates the bevel of a power tool to an indicator more easily readable by an operator provides a front bevel indicator and locking mechanism. A locking mechanism is conveniently placed within reach of the operator and directly controls the motion of the gear assembly. The front bevel indicator may provide a higher resolution of the tilt angle by selection of the various gear ratios of the gears that translate the bevel position of the power tool mounted in the rear to the front of the mount of the power tool.
1. A miter saw having a scale magnifier for measuring the bevel tilt of a tiltable mounted power tool, comprising: a stationary portion having a front and a back; a rotatable table disposed on the stationary portion; a tiltable portion upon which is mounted a power tool, the tiltable portion being mounted on the rotatable table adjacent to the back of the stationary portion; and a measurement section for providing a measurement corresponding to a tilt of the tiltable portion with respect to an axis in which the measurement of the tilt is scalable with respect to an amount of the tilt, the measurement section including a first gear wherein a rotation of the first gear is determined by a tilt of the power tool, a second sear driven by the first gear on a long shaft that extends from the back of the stationary portion to the front of the stationary portion, a third gear at the end of the long shaft proximate the front of the stationary portion, and a fourth gear on a bevel scale axis shaft driven by the third gear.
2. The miter saw having a scale magnifier of claim 1 , the fourth gear fixedly attached to an indicator.
3. The miter saw having a scale magnifier of claim 2 , the indicator including a cylinder having markings and rotating in unison with the fourth gear.
4. The miter saw having a scale magnifier of claim 3 , further comprising a handle having an arm proximate the fourth gear.
5. The miter saw having a scale magnifier of claim 4 , the arm of the handle acting to prevent motion of the fourth gear and lock the tilt of the tiltable portion.
6. The miter saw having a scale magnifier of claim 3 , the markings including numerals.
7. The miter saw having a scale magnifier of claim 6 , further including a pointer.
8. The miter saw having a scale magnifier of claim 7 , the pointer being stationary and supported by the miter base.
9. The miter saw having a scale magnifier of claim 1 , further comprising a handle having an arm proximate the third gear.
10. The miter saw having a scale magnifier of claim 9 , the arm of the handle acting to prevent motion of the third gear and lock the tilt of the tiltable portion
11. The miter saw having a scale magnifier of claim 1 , further comprising means for locking a bevel of the tiltable portion, the means for locking being disposed on the near side of the miter base with respect to the operator.
12. The miter saw having a scale magnifier of claim 1 , a ratio of scaling by the means for scaling the rotary motion of the rotary support into the measurement readable by the operator not being in a 1:1 ratio.