Push block safe index scale

Abstract

An apparatus (100), including: a push block (102) configured to push a workpiece across a table saw, the push block including: a first leg (120), a second leg (130) having a fence side (132) configured to abut a fence of the table saw, and a center leg (140) disposed between the first leg and the second leg. The first leg and the center leg define a first tunnel (152) therebetween, and the center leg and the second leg define a second tunnel (154) therebetween; a scale (160) configured to indicate a distance along the push block from the fence when the fence side of the second leg abuts the fence; and a cursor (162) configured to indicate on the scale safe cut-width settings for the table saw in which a saw blade will not contact the center leg when the fence side of the second leg abuts the fence.

Claims

1. An apparatus, comprising: a push block configured to push a workpiece across a table saw, the push block comprising: a first leg, a second leg comprising a fence side configured to abut a fence of the table saw, and a center leg disposed between the first leg and the second leg, wherein the first leg and the center leg define a first tunnel therebetween, the center leg and the second leg define a second tunnel therebetween wherein the center leg is adjustably positionable between the first leg and the second leg, and wherein adjustment of a position of the center leg adjusts a first tunnel width and a second tunnel width; a scale that comprises distance indicators that are configured to indicate a distance along the push block from the fence when the fence side of the second leg abuts the fence; and a cursor configured to move along the scale with the center leg includes a first indicator on a first side of a center leg that is configured to set a safe maximum cut width in the second tunnel and includes a second indicator on an opposing second side of the center leg that is configured to set a safe minimum cut width in the first tunnel.

2. The apparatus of claim 1, wherein the safe maximum cut-width setting comprises a distance measured from the fence side of the second leg to a fence side of the center leg minus a blade-thickness allowance of at least 1/16 inch.

3. The apparatus of claim 1, wherein the safe minimum cut-width setting comprises a distance measured from the fence side of the second leg to an outside side of the center leg.

4. The apparatus of claim 1, wherein the safe minimum cut-width setting comprises a distance measured from the fence side of the second leg to an outside side of the center leg plus an outside side safety margin distance that extends from the outside side of the center leg.

5. The apparatus of claim 1, wherein the scale comprises a first scale indicator that uniquely indicates a safe minimum cut-width setting for a saw blade disposed in the second tunnel.

6. The apparatus of claim 1, wherein the scale uniquely comprises a second scale indicator that uniquely indicates a safe maximum cut-width setting for a saw blade in the first tunnel.

7. The apparatus of claim 1, wherein the cursor overlies the scale to at least partly cover each of the cut-width settings between the safe maximum cut-width setting and the safe minimum cut-width setting.

8. The apparatus of claim 7, wherein the cursor comprises an opaque material that overlies the scale to at least partly cover each of the cut-width settings between the safe maximum cut-width setting and the safe minimum cut-width setting.

9. An apparatus, comprising: a push block configured to push a workpiece across a table saw, the push block comprising: a first leg, a second leg comprising a fence side configured to abut a fence of the table saw, and a center leg disposed between the first leg and the second leg, wherein the first leg and the center leg define a first tunnel therebetween, and wherein the center leg and the second leg define a second tunnel therebetween, wherein the center leg is adjustably positionable between the first leg and the second leg, and wherein adjustment of a position of the center leg adjusts a first tunnel width and a second tunnel width; a scale that comprises distance indicators that are configured to indicate a distance along the push block from the fence side of the second leg; and a cursor configured to move along the scale with the center leg and to indicate on the scale boundaries of a range of unsafe distances that are measured from the fence side of the second leg, wherein the range of unsafe distances is bounded by a first indicator on a first side of the center leg that is configured to set a safe maximum cut-width for a saw blade in the second tunnel and a second indicator on an opposing side of the center leg that is configured to set a safe minimum cut-width for a saw blade disposed in the first tunnel.

10. The apparatus of claim 9, wherein the range of unsafe distances comprises: an outside side safety margin range of distances bounded on a first end by a measurement from the fence side of the second leg to an outside side of the center leg; and bounded on a second end by a measurement from the fence side of the second leg to the outside side of the center leg plus a safety margin distance that extends from the outside side of the center leg.

11. The apparatus of claim 10, wherein the range of unsafe distances further comprises: a blade-thickness allowance range of distances bounded on a first end by the measurement from the fence side of the second leg to the fence side of the center leg; and bounded on a second end by the measurement from the fence side of the second leg to the fence side of the center leg minus a blade-thickness allowance distance.

12. The apparatus of claim 11, wherein a magnitude of the blade-thickness allowance distance is at least 1/16 inch.

13. The apparatus of claim 9, wherein the cursor comprises an opaque material that overlies the scale to at least partly cover the cut-width settings between the sale maximum cut-width setting and the safe minimum cut-width setting.

14. The apparatus of claim 13, wherein the opaque material comprises at least one recess between the first cursor indicator and the second cursor indicator that is configured to expose at least a portion of the scale between the first cursor indicator and the second cursor indicator.

15. The apparatus of claim 9, wherein the scale comprises a unique first scale indicator that indicates on the scale an end of a second range of unsafe distances that are measured from the fence side of the second leg and that are associated with a location of the second.

16. The apparatus of claim 15, wherein the second range of unsafe distances associated with the location of the second leg comprises: a second leg range of contact distances that are bounded on a first end by a measurement of zero, bounded on a second end by a measurement from the fence side of the second leg to an outside side of the second leg, and in which a saw blade that is set to any of the second leg range of contact distances will contact the second leg when the fence side of the second leg abuts the fence; and an outside side safety margin range of distances bounded on a first end by the measurement from the fence side of the second leg to the outside side of the second leg; and bounded on a second end by the measurement from the fence side of the second leg to the outside side of the second leg plus a safety margin distance that extends from the outside side of the second leg.

17. The apparatus of claim 9, wherein the scale comprises a unique second scale indicator that indicates an end of a third range of unsafe distances that are measured from the fence side of the second leg and that are associated with a location of the first.

18. The apparatus of claim 17, wherein the third range of unsafe distances associated with the location of the first leg comprises: a first leg range of contact distances that are bounded on a first end by a measurement from the fence side of the second leg to a fence side of the first leg, bounded on a second end by a measurement from the fence side of the second leg to an outside side of the first leg, and in which a saw blade that is set to any of the first leg range of contact distances will contact the first leg when the fence side of the second leg abuts the fence; and a blade-thickness allowance range of distances bounded on a first end by the measurement from the fence side of the second leg to the fence side of the first leg; and bounded on a second end by the measurement from the fence side of the second leg to the fence side of the first leg minus a blade-thickness allowance distance.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The invention is explained in the following description in view of the drawings that show:

(2) FIG. 1 is a perspective view of a prior art pusher apparatus.

(3) FIG. 2 is a perspective view of an example embodiment of a push block disclosed herein.

(4) FIG. 3 and FIG. 4 are closeup top views of the push block of FIG. 2.

(5) FIG. 5 and FIG. 6 are perspective views of the push block of FIG. 2.

DETAILED DESCRIPTION OF THE INVENTION

(6) The present inventor has devised a unique and innovative push block that incorporates visual indication of safe cut-width settings for a table saw used therewith. When the table saw cut-width is set within the safe cut-width settings indicated on the push block, and when the push block is used against a fence of the table saw, the saw blade will not contact one or more features of the push block. In an example embodiment, the push block includes a center leg and the safe cut-width settings indicated ensure the saw blade does not contact the center leg. In an example embodiment, a distance of the center leg from the fence is adjustable and the visual indication changes as the center leg is moved to reflect changes in the distance of the center leg from the fence. In other example embodiments, the safe cut-width settings indicated ensure the saw blade does not contact a first (outer) leg or a second (fence side) leg of the push block.

(7) FIG. 2 shows an apparatus 100, that includes a push block 102 configured to push a workpiece 104 along a fence 106 of a table saw 108 having a saw blade 110. The push block 102 includes: a first leg 120 having a fence side 122 and an outside side 124; a second leg 130 having a fence side 132 and an outside side 134; and a center leg 140 disposed between the first leg 120 and the second leg 130 and having a fence side 142 and an outside side 144. The first leg 120 and the center leg 140 define a first tunnel 152 therebetween. The center leg 140 and the second leg 130 define a second tunnel 154 therebetween. The push block 102 further includes a scale 160 (e.g., a ruler that is disposed on the push block) having a plurality of distance indicators 160E, 160M that are configured to indicate a distance along the push block 102 measured from the fence side 132 of the second leg 130 (e.g., a distance from the fence along a line that is perpendicular to the fence). When the fence side 132 of the second leg 130 abuts the fence 106, the scale 160 also indicates a distance measured along the push block 102 from the fence 106. The push block 102 further includes a cursor 162 configured to indicate on the scale 160 safe cut-width settings for the table saw 108 in which a saw blade 110 will not contact the center leg 140 when the fence side 132 of the second leg 130 abuts the fence 106. The apparatus may further include a handle 164 and various other accessories (not shown).

(8) In an example embodiment, a position and associated distance of the center leg 140 relative to the fence side 132 of the second leg 130 (and thereby relative to the fence 106 when the fence side 132 of the second leg 130 abuts the fence 106) is laterally adjustable via a key 170 and slot 172 arrangement. However, any arrangement that permits this lateral adjustment is suitable. The center leg 140 may be selectively secured in any lateral position via a thumb screw 176 or the like. Adjustment of the position of the center leg 140 adjusts a first tunnel width W1 and a second tunnel width W2. In this example embodiment, the cursor 162 is operatively connected to the center leg and thereby configured to move along the scale 160 with the center leg 140.

(9) As can be seen in FIG. 3, a nearest point 174 of the saw blade 110 can be safely positioned anywhere from a first position P1 to a second position P2 (in the second tunnel 154), and anywhere from a third position P3 to a fourth position P4 (in the first tunnel 152).

(10) The first position P1 is a safe minimum cut-width position for a saw blade 110 disposed in the second tunnel 154. The first position P1 is disposed at a first distance D1 that is measured from the fence side 132 of the second leg 130. When the fence side 132 of the second leg 130 abuts the fence 106 as shown, the first position P1 is also disposed at the first distance D1 measured from the fence 106. The scale 160 optionally includes a unique first scale indicator SI1 at a location on the scale that corresponds with the first distance D1. As used herein, unique means that the identifier is in addition to and distinguishable from the ruler/distance markings 160E, 160M on the scale 160. In this example embodiment shown, first distance D1 is ¼ inches, so the first scale indicator SI1 is disposed at ¼ inch on the scale 160.

(11) The first distance D1 is disposed at an end of a range of distances Zero to D1 that are measured from the fence side 132 of the second leg 130 and that are associated with a location of the center leg 140. The range of distances Zero to D1 associated with the second leg 130 includes at least: 1) a range of distances RSL that are measured from the fence side 132 of the second leg 130 and that are occupied by the second leg 130; and 2) an optional range of distances ROM2 that are measured from the fence side 132 of the second leg 130 and that are occupied by an outside side safety margin 180 that abuts the outside side 134 of the second leg 130. The range of distances RSL that are measured from the fence side 132 of the second leg 130 and that are occupied by the second leg 130 tells where a width of the second leg 130 is located relative to the fence side 132 of the second leg 130 (and thereby relative to the fence 106). Similarly, the range of distances ROM2 that are measured from the fence side 132 of the second leg 130 and that are occupied by the outside side safety margin 180 tells where a width of the outside side safety margin 180 is located relative to the fence side 132 of the second leg 130 (and thereby relative to the fence 106).

(12) For example, for a second leg 130 having an example width of ¼ inch, the range of distances RSL measured from the fence side 132 of the second leg 130 would be Zero to ¼ inches. This is because the second leg 130 starts at the fence side 132 of the second leg 130 (D=Zero) and extends its ¼-inch width therefrom. In contrast, for an outside side safety margin 180 having an example width of 1/16 inches (not shown), the range of distances ROM2 measured from the fence side 132 of the second leg 130 would be ¼ inch to 5/16 inch. This is because the outside side safety margin 180 starts at ¼ inches (where the outside side 134 of the second leg 130 is located) and extends its 1/16-inch width away from the outside side 134 of the second leg 130. In such an example embodiment (not shown), the first distance D1 would be 5/16 inches because the first distance D1 indicates an outside end of the range of distances Zero to D1 associated with the second leg 130, and because the range of distances Zero to D1 associated with the second leg 130 includes at least: 1) the range of distances RSL of Zero to ¼ inch plus 2) the range of distances ROM2 of ¼ inch to 5/16 inch. A width of the outside side safety margin 180 can be any suitable size.

(13) The table saw includes a table saw ruler 190 that has a cut width setting indicator CWSI that indicates on the table saw ruler 190 a distance between the fence 106 and the nearest point 174 of the saw blade 110. In the example embodiment shown, when the saw blade 110 is the first position P1, the distance between the fence 106 and the nearest point 174 of the saw blade 110 is the first distance D1. Since the first scale indicator SI1 is disposed at the first distance D1 on the scale 160, an operator who sees the first scale indicator SI1 located at the first distance D1 on the scale 160 will know that the cut width setting indicator CWSI cannot be set below the first distance D1 on the table saw ruler 190 when the saw blade 110 is disposed in the second tunnel 154. This safe minimum cut-width position is indicated as a cut width setting indicator first position CWSIP1 on the table saw ruler 190.

(14) The second position P2 is a safe maximum cut-width position for a saw blade 110 disposed in the second tunnel 154 when the center leg 140 is disposed at the center leg position CLP shown. The second position P2 is disposed at a second distance D2 that is measured from the fence side 132 of the second leg 130. When the fence side 132 of the second leg 130 abuts the fence 106 as shown, the second position P2 is also disposed at the second distance D2 from the fence 106.

(15) The third position P3 is a safe minimum cut-width position for a saw blade 110 disposed in the first tunnel 152 when the center leg 140 is disposed at the center leg position CLP shown. The third position P3 is disposed at a third distance D3 that is measured from the fence side 132 of the second leg 130. When the fence side 132 of the second leg 130 abuts the fence 106 as shown, the third position P3 is also disposed at the third distance D3 from the fence 106.

(16) The cursor 162 includes a first cursor indicator Cl1 that is configured to be positioned at a location on the scale that corresponds with the second distance D2. In an example embodiment, the first cursor indicator Cl1 is a fence-side bitter end of a tab 186 that is part of the scale 160, and the scale 160 overlies the scale 160. In an example embodiment, scale 160 is composed of an opaque material that blocks visual access to a portion of the scale 160 thereunder. Alternately, the first cursor indicator Cl1 may be a pointer or the like. In this example embodiment shown, second distance D2 is 1 5/16 inch, so the first cursor indicator Cl1 is disposed at 1 5/16 inches on the scale 160.

(17) The cursor 162 includes a second cursor indicator Cl21 that is configured to be positioned at a location on the scale that corresponds with the third distance D3. In an example embodiment, the second cursor indicator Cl2 is an outside-side bitter end of the scale 160. In this example embodiment shown, third distance D3 is slightly under 2- 9/16 inches, so the second cursor indicator Cl2 is disposed at slightly under 2 9/16 inches on the scale 160. The cursor 162 may include a second tab (not shown) that extends away from the fence 106 and which includes the second cursor indicator Cl2. The cursor 162 may further include one or more recesses R1, R2 between the first cursor indicator Cl1 and the second cursor indicator Cl2 that is configured to expose at least a portion of the scale 160 between the first cursor indicator Cl1 and the second cursor indicator Cl2 for operator convenience.

(18) The second distance D2 is disposed at an end of a range of distances D2 to D3 that are measured from the fence side 132 of the second leg 130 and that are associated with a location of the center leg 140. The range of distances D2 to D3 associated with the center leg 140 includes at least: 1) a range of distances RCL that are measured from the fence side 132 of the second leg 130 and that are occupied by the center leg 140; 2) a range of distances RSBACL that are measured from the fence side 132 of the second leg 130 and that are occupied by a saw blade allowance 200 that abuts a fence side 142 of the center leg 140; and 3) an optional range of distances ROMC that are measured from the fence side 132 of the second leg 130 and that are occupied by an outside side safety margin 182 that abuts the outside side 144 of the second leg 130.

(19) The saw blade allowance 200 accounts for a thickness of the saw blade 110. This is necessary because the table saw ruler 190 references the nearest point 174 of the saw blade 110, which is disposed on a fence side of the saw blade 110, whereas the center leg 140 is disposed on the other/outside side of the saw blade 110. The tab 186 of the cursor 162 enables the cursor 162 to indicate the second distance D2 on the scale 160 by extending over the scale 160 toward the fence 106 to reach the location on the scale 160 of the nearest point 174 of the saw blade 110. The saw blade allowance 200 can be any suitable size. Common table saw blade thickness range from 1/16 inch to ⅛ inch thick. Consequently, the saw blade allowance 200 may commonly be at least 1/16 inch. In an example embodiment, the saw blade allowance 200 is ⅛ inch plus a suitable (fence side) safety margin. Example suitable safety margins are 1/32 inch or larger.

(20) The range of distances RCL that are measured from the fence side 132 of the second leg 130 and that are occupied by the center leg 140 tells where a width of the center leg 140 is located relative to the fence side 132 of the second leg 130 (and thereby relative to the fence 106). Similarly, the range of distances RSBACL that are measured from the fence side 132 of the second leg 130 and that are occupied by the saw blade allowance 200 tells where a width of the saw blade allowance 200 is located relative to the fence side 132 of the second leg 130 (and thereby relative to the fence 106). Likewise, the range of distances ROMC that are measured from the fence side 132 of the second leg 130 and that are occupied by the outside side safety margin 182 tells where a width of the outside side safety margin 182 is located relative to the fence side 132 of the second leg 130 (and thereby relative to the fence 106).

(21) For example, for a center leg 140 having an example width of 1 1/16 inch, the range of distances RCL measured from the fence side 132 of the second leg 130 would be approximately 1 7/16 inch to 2½ inch. This is because the center leg 140 starts at 1 7/16 inches and extends its 1 1/16 inch width therefrom. For a saw blade allowance 200 having an example width of ⅛ inch, the range of distances RSBACL measured from the fence side 132 of the second leg 130 would be approximately 1 7/16 inch to 1- 5/16 inch. This is because the saw blade allowance 200 starts at 1 7/16 inches (where the fence side 142 of the center leg 140 is located) and extends it's ⅛-inch width toward the second leg 130 (and thereby toward the fence 106). For an outside side safety margin 182 having an example width of 1/16 inch (not shown), the range of distances ROMC measured from the fence side 132 of the second leg 130 would be approximately 2½ inch to 2 5/16 inch. This is because the outside side safety margin 180C starts at 2½ inches (where the outside side 144 of the center leg 140 is located) and extends its 1/16-inch width away from the outside side 144 of the center leg 140.

(22) In such an example embodiment (not shown), the second distance D2 would be 1 5/16 inches because the second distance D2 indicates a fence side end of the range of distances D2 to D3 associated with the center leg 140, and because the range of distances D2 to D3 associated with the center leg 140 includes at least: 1) the range of distances RCL of 1 7/16 inch to 2½ inch, plus 2) the range of distances RSBACL of I- 7/16 inch to 1 5/16 inch, plus 3) the range of distances ROM2 of 2½ inch to 2 5/16 inch. A width of the outside side safety margin 182 can be any suitable size. The third distance D3 would be 2 5/16 inches because the third distance D3 represents an outside end of the range of distances D2 to D3.

(23) In the example embodiment shown, when the saw blade 110 is the second position P2, the distance between the fence 106 and the nearest point 174 of the saw blade 110 is the second distance D2. Since the first cursor indicator Cl1 is disposed at the second distance D2 on the scale 160, an operator who sees the first cursor indicator Cl1 located at the second distance D2 on the scale 160 will know that the cut width setting indicator CWSI cannot be set above the second distance D2 on the table saw ruler 190 when the saw blade 110 is disposed in the second tunnel 154. This safe maximum cut-width position is indicated as a cut width setting indicator second position CWSIP2 on the table saw ruler 190.

(24) Similarly, when the saw blade 110 is the third position P3, the distance between the fence 106 and the nearest point 174 of the saw blade 110 is the third distance D3. Since the second cursor indicator Cl2 is disposed at the third distance D3 on the scale 160, an operator who sees the second cursor indicator Cl2 located at the third distance D3 on the scale 160 will know that the cut width setting indicator CWSI cannot be set below the third distance D3 on the table saw ruler 190 when the saw blade 110 is disposed in the first tunnel 152. This safe minimum cut-width position is indicated as a cut width setting indicator third position CWSIP3 on the table saw ruler 190.

(25) In an example embodiment, the center leg 140 is laterally adjustable. Movement of the center leg 140 will cause the second position P2 and the third position P3 to change. This, in turn, will cause the second distance D2 and the third distance D3 to change. However, the cursor 162 and associated first cursor indicator Cl1 and second cursor indicator Cl2 move with the center leg 140. As a result, the first cursor indicator Cl1 and the second cursor indicator Cl2 will always indicate the second distance D2 and the third distance D3 respectively on the scale 160. The second distance D2 corresponds to the correct safe maximum cut-width position for a saw blade 110 disposed in the second tunnel 154, and the third distance D3 corresponds to the correct safe minimum cut-width position for a saw blade 110 disposed in the first tunnel 152. Consequently, the first cursor indicator Cl1 and the second cursor indicator Cl2 will always indicate the correct safe maximum cut-width position for a saw blade 110 disposed in the second tunnel 154 and the correct safe minimum cut-width position for a saw blade 110 disposed in the first tunnel 152 for any location of the center leg 140.

(26) The fourth position P4 is a safe maximum cut-width position for a saw blade 110 disposed in the first tunnel 152. The fourth position P4 is disposed at a fourth distance D4 that is measured from the fence side 132 of the second leg 130. When the fence side 132 of the second leg 130 abuts the fence 106 as shown, the fourth position P4 is also disposed at the fourth distance D4 from the fence 106. The scale 160 optionally includes a unique second scale indicator SI2 at a location on the scale that corresponds with the fourth distance D4. As used herein, unique means that the identifier is in addition to and distinguishable from the ruler markings on the scale.

(27) The fourth distance D4 is disposed at a fence end of a range of distances D4 to D5 that are measured from the fence side 132 of the second leg 130 and that are associated with a location of the first leg 120. The range of distances D4 to D5 associated with the first leg 120 includes at least: 1) a range of distances RFL that are measured from the fence side 132 of the second leg 130 and that are occupied by the first leg 120; and 2) a range of distances RSBAFL that are measured from the fence side 132 of the second leg 130 and that are occupied by a saw blade allowance 202 that abuts a fence side 122 of the first leg 120. Similar to the saw blade allowance 200, the saw blade allowance 202 accounts for a thickness of the saw blade 110. The saw blade allowance 200 and 202 may or may not be the same as each other.

(28) The range of distances RFL that are measured from the fence side 132 of the second leg 130 and that are occupied by the first leg 120 tells where a width of the first leg 120 is located relative to the fence side 132 of the second leg 130 (and thereby relative to the fence 106). Similarly, the range of distances RSBAFL that are measured from the fence side 132 of the second leg 130 and that are occupied by the saw blade allowance 202 tells where a width of the saw blade allowance 202 is located relative to the fence side 132 of the second leg 130 (and thereby relative to the fence 106).

(29) For example, for a first leg 120 having an example width of ½ inch, the range of distances RFL measured from the fence side 132 of the second leg 130 would be 3⅛ inch to approximately 3⅝ inch. This is because the first leg 120 starts at 3⅛ inches and extends its ½-inch width therefrom. For a saw blade allowance 202 having an example width of ⅛ inch, the range of distances RSBAFL measured from the fence side 132 of the second leg 130 would be approximately 3 inches to 3⅛ inches. This is because the saw blade allowance 202 starts at approximately 3⅛ inches (where the fence side 122 of the first leg 120 is located) and extends it's ⅛-inch width toward the second leg 130 (and thereby toward the fence 106).

(30) In such an example embodiment, the fourth distance D4 would be 3 inches because the fourth distance D4 indicates a fence end of the range of distances D4 to D5 associated with the first leg 120, and because the range of distances D4 to D5 associated with the first leg 120 includes at least: 1) the range of distances RFL of 3⅛ inches to approximately 3⅝ inches plus 2) the range of distances RSBAFL of 3⅛ inches to three (3) inches.

(31) In the example embodiment shown, when the saw blade 110 is the fourth position P4, the distance between the fence 106 and the nearest point 174 of the saw blade 110 is the fourth distance D4. Since the second scale indicator SI2 is disposed at the fourth distance D4 on the scale 160, an operator who sees the second scale indicator SI2 located at the fourth distance D4 on the scale 160 will know that the cut width setting indicator CWSI cannot be set above the fourth distance D4 on the table saw ruler 190 when the saw blade 110 is disposed in the first tunnel 152. This safe maximum cut-width position is indicated as a cut width setting indicator second position CWSIP4 on the table saw ruler 190.

(32) In an example embodiment, the scale 160 could be extended to the outside side 124 of the first leg 120 and could include a third scale indicator SI3 (not shown) that would indicate the fifth distance D5 and a corresponding safe minimum cut-width position for a saw blade 110 disposed laterally outside/astride the push block 102. An operator who sees the third scale indicator located at the fifth distance D5 on the scale 160 would know that the cut width setting indicator CWSI cannot be set below the fifth distance D5 on the table saw ruler 190 when the saw blade 110 is disposed laterally outside the push block 102. This safe minimum cut-width position is optionally indicated as a cut width setting indicator fifth position CWSIPS on the table saw ruler 190. As with the first distance D1 and the second distance D3, an optional outside safety margin (not shown) could be included added to the range D4 tO D5 and thereby be accounted for by the fifth distance D5.

(33) FIG. 4 is a close-up view of the push block 102 of FIG. 2 pushing a workpiece 104 across the saw blade 110, which is disposed in the second tunnel 154. Just like in FIG. 2, the first distance D1 is disposed at an outside end of the range of distances Zero to D1 that are measured from the fence side 132 of the second leg 130 and that are associated with a location of the second leg 130. The range of distances Zero to D1 includes: 1) the range of distances RSL that are measured from the fence side 132 of the second leg 130 and that are occupied by the second leg 130; and 2) the optional range of distances ROM2 that are measured from the fence side 132 of the second leg 130 and that are occupied by an outside side safety margin 180 that abuts the outside side 134 of the second leg 130.

(34) Also just like in FIG. 2, the second distance D2 is a fence end and the third distance D3 is an outside end of a range of distances D2 to D3 that are measured from the fence side 132 of the second leg 130 and that are associated with a location of the center leg 140. The range of distances D2 to D3 associated with the center leg 140 includes: 1) the range of distances RCL that are measured from the fence side 132 of the second leg 130 and that are occupied by the center leg 140; 2) the range of distances RSBACL that are measured from the fence side 132 of the second leg 130 and that are occupied by a saw blade allowance 200 that abuts a fence side 132 of the center leg 140; and 3) the range of distances ROMC that are measured from the fence side 132 of the second leg 130 and that are occupied by an outside side safety margin 182 that abuts the outside side 134 of the second leg 130.

(35) The saw blade 110 is located at a selected distance Dselected from the fence 106. An operator can see the cut width setting indicator CWSI is correspondingly located at approximately one (1) inch on the table saw ruler 190. The operator can also see on the scale 160 that one (1) inch is safely above the first scale indicator S11. Since the first scale indicator SI1 indicates the safe minimum cut-width position for a saw blade 110 disposed in the second tunnel 154, this means that the saw blade 110 will not contact the second leg 130 during a cutting operation. The operator can also see on the scale 160 that one (1) inch is safely below the first cursor indicator Cl1. Since the first cursor indicator Cl1 indicates the safe maximum cut-width position for a saw blade 110 disposed in the second tunnel 154, this means that the saw blade 110 will not contact the center leg 140 during a cutting operation.

(36) FIG. 5 is a perspective view of the push block 102 of FIG. 2 pushing a workpiece 104 across the saw blade 110, which is disposed in the first tunnel 152. Just like in FIG. 2, the third distance D3 is an outside end of a range of distances D2 to D3 that are measured from the fence side 132 of the second leg 130 and that are associated with a location of the center leg 140.

(37) Also like that in FIG. 2, the fourth distance D4 is disposed at a fence end of a range of distances D4 to D5 that are measured from the fence side 132 of the second leg 130 and that are associated with a location of the first leg 120. The range of distances D4 to D5 associated with the first leg 120 includes at least: 1) a range of distances RFL that are measured from the fence side 132 of the second leg 130 and that are occupied by the first leg 120; and 2) a range of distances RSBAFL that are measured from the fence side 132 of the second leg 130 and that are occupied by a saw blade allowance 202 that abuts a fence side 122 of the first leg 120. Similar to the saw blade allowance 200, the saw blade allowance 202 accounts for a thickness of the saw blade 110.

(38) The saw blade 110 is located at a selected distance Dselected from the fence 106. An operator can see the cut width setting indicator CWSI is correspondingly located at approximately 2⅛ inch on the table saw ruler 190. The operator can also see that 2⅛ inch on the scale 160 is safely above the second cursor indicator Cl2. Since the second cursor indicator Cl2 indicates the safe minimum cut-width position for a saw blade 110 disposed in the first tunnel 152, this means that the saw blade 110 will not contact the center leg 140 during a cutting operation. The operator can also see that the 2⅛ inch on the scale 160 is safely below the second scale indicator SI2. Since the second scale indicator SI2 indicates the safe maximum cut-width position for a saw blade 110 disposed in the first tunnel 152, this means that the saw blade 110 will not contact the first leg 120 during a cutting operation.

(39) FIG. 6 is a perspective view of the push block 102 of FIG. 2 pushing a workpiece 104 across the saw blade 110, in which the saw blade 110 has contacted the center leg 140. Just like in FIG. 2, the second distance D2 is a fence end and the third distance D3 is an outside end of a range of distances D2 to D3 that are measured from the fence side 132 of the second leg 130 and that are associated with a location of the center leg 140.

(40) The saw blade 110 is located at a selected distance Dselected from the fence 106. An operator can see the cut width setting indicator CWSI is located at approximately 2 inches on the table saw ruler 190. The operator can see that 2 inches on the scale 160 is not safely below the first cursor indicator Cl1. Since the first cursor indicator Cl1 indicates the safe maximum cut-width position for a saw blade 110 disposed in the second tunnel 154, this means that the saw blade 110 will not be safely disposed in the second tunnel 154 during a cutting operation. The operator can also see that 2 inches on the scale 160 is not safely above the second cursor indicator Cl2. Since the second cursor indicator Cl2 indicates the safe minimum cut-width position for a saw blade 110 disposed in the first tunnel 152, this means that the saw blade 110 will also not be safely disposed in the first tunnel 152 during a cutting operation. Since the cut width setting indicator CWSI indicates a position that is both above the safe maximum cut-width position for a saw blade 110 disposed in the second tunnel 154 and below the safe minimum cut-width position for a saw blade 110 disposed in the first tunnel 152, the operator will understand that the saw blade 110 will contact the center leg 140 in this configuration.

(41) In the example embodiment shown, the operator can simply see that the cut width setting indicator CWSI is correspondingly located between the first cursor indicator Cl1 and the second cursor indicator Cl2, which means the saw blade 110 will contact the center leg 140. In the example embodiment shown, the cursor 162 is composed of an opaque material that blocks visual access to the scale indicators on the scale 160 and under the cursor 162. Consequently, the operator would not be able to see the 2-inch indicator on the scale 160, which would mean that the saw blade 110 would contact the center leg 140. Example damage resulting from pushing the push block 102 over the saw blade 110 in this configuration is visible in the center leg 140.

(42) The apparatus disclosed herein provides a visual reference that allows an operator to quickly assess proper settings and avoid equipment damage before a cutting operation without having to make any calculations or use any measuring devices. Consequently, the disclosed apparatus represents an improvement in the art.

(43) While various embodiments of the present invention have been shown and described herein, it will be obvious that such embodiments are provided by way of example only. Numerous variations, swapping of features among embodiments, changes, and substitutions may be made without departing from the invention herein. Accordingly, it is intended that the invention be limited only by the spirit and scope of the appended claims.