CA2270815C - Bandsaw failure preventer - Google Patents
Bandsaw failure preventer Download PDFInfo
- Publication number
- CA2270815C CA2270815C CA 2270815 CA2270815A CA2270815C CA 2270815 C CA2270815 C CA 2270815C CA 2270815 CA2270815 CA 2270815 CA 2270815 A CA2270815 A CA 2270815A CA 2270815 C CA2270815 C CA 2270815C
- Authority
- CA
- Canada
- Prior art keywords
- bandsaw
- wheel
- blade
- sawblade
- saw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 241000763859 Dyckia brevifolia Species 0.000 claims abstract description 54
- 238000005520 cutting process Methods 0.000 claims abstract description 24
- 230000007246 mechanism Effects 0.000 claims description 5
- 238000005299 abrasion Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 206010012411 Derailment Diseases 0.000 abstract description 20
- 230000006378 damage Effects 0.000 abstract description 4
- 230000002265 prevention Effects 0.000 description 6
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D55/00—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts
- B23D55/08—Sawing machines or sawing devices working with strap saw blades, characterised only by constructional features of particular parts of devices for guiding or feeding strap saw blades
- B23D55/082—Devices for guiding strap saw blades
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sawing (AREA)
Abstract
A bandsaw failure preventing device preventing the derailments of an endless blade bandsaw. Comprising a wheel affixed to a mounting bracket for placement in front of the cutting edge of a bandsaw blade. The rotating wheel innovation enables the device to perform its function without damage by the cutting edge of the sawblade itself. The device is to be installed onto such an existing prior art band saw and prevents the sawblade from exiting its existing guide assembly and leaving the determined path through the bandsaw transport system.
Description
Bandsaw Failure Prev~nter Bac ground of Invention 1. Field of the Invention The present Invention relates to an anti-derailment saw-blade guide device for endless blade bandsaws, titled the Bandsaw Failure Preventer. This provides for a more accident free and efficient operation of a bandsaw. This is a device consisting of a wheel mounted to a bracket and installed in front of the cutting edge of the host endless bandsaw blade.
2. Description of prior art Most existing prior art bandsaws are furnished with blade guide assemblies consisting of above and below table blade guide pads or blade guiding bearings which are respectively spaced on either side of the blade to provide free running movement without twisting of the blade. Most of these existing guide assemblies are also furnished with a mounted bearing for engaging the saw-blade's rear surtace during cutting. These are in constant contact with smooth surfaces of the blade when cutting operations are performed.
However, the above mentioned existing guide assemblies fail to recognize the issue for finding a way to prevent the saw-blade from disengaging from this guide assembly and causing derailment, whereby rendering a complete failure of the saw operation. These systems fail to provide a solution to that problem. This invention is that missing element which now completely prevents sawblade derailments and has not been discussed by any prior art development. And more directly has not been suggested by any other bandsaw housing or guide assembly as a possible prevention mechanism to derailment. 'The wheel of this device is not in constant contact with the sawblade, but only engages as the saw-blade begins to disengage from the existing guide assembly in the direction of the operator. This rotating wheel stops the saw-blade from diverting any further from its intended path, and thereby preventing any derailment. This contact also begins rotating the wheel and consequently reduces wear on the wheel and the cutting edge of the sawblade. In the very established field of bandsaw manufacturing most possible innovations have been developed, but this device, albeit small, is a substantial improvement in the field.
To further define the circumstances of bandsaw failure some of the customary band saw cutting operations such as crosscutting, ripping, mitering, compound cutting and corrective re-sawing pull the blade off of its guide assembly. That is because the corrugated teeth of the sharp saw blade entangle with and won't let go of the work-piece.
This behavior occurs often when corrective re-sawing has to be done as is common in any of the saw operations mentioned above. Corrective re-sawing is a procedure, whereby the work-piece has to be slightly moved backwards toward the operator to correct any curve, straight or pattern cut which were not accurately carried out. As this work-piece is moved towards the operator, it pulls the still entangled saw-blade right past the guides until a derailment occurs. Despite the established history of bandsaw blade derailments, this fact has always been accepted as standard behavior. There have been no recognizable developments to address this concern since a solution was not expected to be logical. This device however provide a new appreciation for a solution to a problem that has not been approached before.
The strength of innovation of this invention stems from the fact that it is a counter-intuitive action to put something in front of the cutting edge of a sawblade that is not intended to be cut. Despite the fact that using guide bearings or guide pads to apply pressure to a sawblade may be known, the expected result of placing such a bearing in front of the cutting edge would yield a destructive effect and render the device inoperable. Nor do these previous systems express or imply any suggestions for prevention of complete blade derailment in this manner. Moreover, the traditional technique of applying pressure with bearings serves only as a path guide for the smooth edges of the sawblade. However, since the incorporated wheel of this invention is composed of a material suitable for minimizing abrasion due to friction on the saw blade and on the wheel itself and because it rotates along with the movement of the cutting edge of the sawblade, the unexpected result is that it counteracts the cutting ability of this sawblade~ against this wheel.
~lbjects and Advantages The prirnary object of this invention is to provide a means of preventing bandsaw blade derailments while additionally minimizing damage to the bandsaw and the failure prevention device when in use. This subsequently also increases the efficiency of otherwise prior art accident prone bandsaws and significantly reducing breakdowns, sawblade replacements and a ruined work. The prior art bandsaw derailment is a jarring experience that endangers the safety of the operator, as the impact-forces of the derailing sharp teeth of the saw-blade can injure the operators limbs and body. The removal of this danger is the end result of this innovation.
An additional functional byproduct of this invention is that when the blade comes in contact with the wheel of the bandsaw failure prevention device it generates a significant amount of vibration and noise. This is due to the fact that, despite the absorptive nature of the composition of the wheel, the rough edge of the cutting edge of the blade wilt cause an irregular amount of friction. This distinguishable feature aids as a warning and indication to the user that the device is performing it's function. The sound as well as the vibration factors are part of the devices appreciable novel structural features and would be unnecessarily fulfilled by any other existing bandsaw subsystem, including the aforementioned guide bearing assemblies.
This invention is the entirely missing element that now completely prevents sawblade derailments. The wheel of this device is not in constant contact with the sawblade, but only engages as the saw-blade begins to disengage from the existing guide assembly in the direction of the operator. This rotating wheel stops the saw-blade from divertingi any further from its intended path, and thereby preventing such a derailment. This contact also begins rotating the wheel and, in addition to the abrasion minimizing material composition of the wheel, consequently reduces wear on the wheel and the cutting edge of the sawblade. This device is a substantial improvement in the established field of bandsaw manufacturing and provides a new appreciation for a solution to a ~rroblem that has not been approached before due to the illogical nature of placing an object in front of a sawblade that is not intended to be cut.
Summar~i of the Present Invention The present invention provides a anti-derailment saw-blade guide device which overcomes all of the above-mentioned disadvantages.
In brief, the objects and advantages of the present invention include: the provision of an anti-derailment device for bandsaws consisting of a bracket with an optional hinged fork furnished with a wheel and an optional adjustment screw. This device is installed in front of the cutting edge of the sawblade and overcomes the afore-noted deficiencies of the prior art in band saw operations. This solution to general derailments is a long felt need that is fulfilled by this invention.
Brief Descril4tion of Drawing A Better understanding of the present invention will be had upon reference to the following detailed description when read in conjunction with the accompanying drawings, wherein like reference characters refer to the like parts throughout the several views, and in which:
FIG. 1 shows the installed bandsaw failure preventing device along with the existing saw-blade guide assembly as it would be located on a bandsaw work table.
FIG. 2 shows the bandsaw failure preventing device installed on the underside of a band-saw worktable with its existing guide assembly. This below the worktable installation figure only serves to demonstrate an optional mounting location.
FIG. 3 shows the bandsaw failure preventing device, consisting of a wheel mounted to an optional hingeable fork installed to a bracket with an optional adjustment screw.
Desci~~tion of the Invention 1. Description of the Invention FIG. 1 shows the installed bandsaw failure preventing device along with the existing saw-blade guide assembly as it would be located on top of a bandsaw work table. This figure show the device, consisting of a wheel 6 mounted to a bracket 8 with an optional adjustment screw 10, being installed in front of the cutting edge of the sawblade.
FIG. 2 shows the bandsaw failure preventing device installed on the underside of a band-saw worktable with its existing guide assembly. The wheel 6 and bracket of this device are clearly visible. This below the worktable installation figure only serves to demonstrate an optional mounting location.
FIG. 3 shows a more detailed view of the bandsaw failure preventing device, consisting of a~ wheel 6, mounted to an optional hinged fork 12 via an axle 14 installed to a mounting plate 8 via said hinge 16. The fork can be hinged and furnished with an optional adjustible screw 10 if saw blades of different dimensions are used for different applications. 'This optional screw 10 sets the spacing between the wheel 6 and the blade (see FIG. 1 ) by moving the hinged fork 12 to which the wheel 6 is mounted.
This device could also be made without the benefit of this optional hinged fork 12 and the optional adjusting screw 10. This said fixed bracket could be made by having set distances for certain size s;aw-blades and bandsaw configurations.
2. Operation of the Invention The bandsaw failure preventing device consists of a wheel FIG. 1 part 6 mounted to a bracket 8. and is installed in front of the cutting edge of the host endless bandsaw-blade. It is the rotation of this wheel against the sawblade that yields the unexpected result and functionality of a device that prevents blade derailment from the normally destructive edge of the sawblade and additionally functions as a warning system to the user that such failure is about to occur.
Any existing prior art bandsaw is furnished with a blade guide assembly similar to the one as seen in FIG. 1 consisting of the upper and lower saw-blade guides or bearings which provide free running movement without twisting of the blade.
This same existing guide assembly as seen in FIG. 1 is also furnished with a rear mounted guide bearing for engaging the saw-blade's smooth rear surface during cutting.
Some of the customary band saw cutting operations such as cross-cutting, ripping, mitering, compound cutting and corrective re-sawing commonly cause the saw blade to derail and come off of its guide assembly. Corrective re-sawing is a procedure, whereby the work-piece has to be slightly moved backwards toward the operator to correct any cut which was not accurately carried out. As this work-piece is moved towards the operator, it pulls the entangled saw-blade right past the guides until a derailment occurs.
FIG. 1 shows a typical existing saw-blade guide assembly as it would be located on top of the worktable. The saw-blade as shown in FIG. 1 is shown just about to derail as it is no longer confined between the guide-bearings or guide pads and the wheel of the bandsaw failure preventing device is just about to engage with the cutting edge of the saw-blade and would begin rotating, thereby stopping the blade from further derailment while preventing damage to the device itself.
FIG. 3 shows the bandsaw failure preventing device in a more detailed fashion, consisting of .a wheel 6, mounted to an optional hinged fork 12 via axle 14 installed to a bracket 8 via optional hinge 16. The fork has to be optionally hinged and furnished with an optional adjustable screw 10 if saw blades of different dimensions are used for different applications. This optional screw 10 sets the spacing between the wheel 6 and the blade (sef~ FIG. 1 ) by moving the hinged fork 12 to which the wheel 6 is mounted.
This device a~uld also be made without the benefit of this optional hinged fork 12 and the optional adjusting screw 10. This fixed bracket could be made by having set distances for certain size saw-blades and bandsaw configurations.
The optional adjusting screw 10 can also be substituted with any other similar distance limiting mechanism (like a spring or a plastic cylinder), as long as the wheel can be positioned at an optimum distance from the saw-blade.
This device is independently installed and is not part the existing guide assembly and fulfills a function not at all intended by this traditional guide assembly.
3. Conclusion Thus the reader will see that the bandsaw failure prevention device provides an economical, efficient, logical and safe device which can be used by laymen as well as professionals alike. The wheel of this invention is not intended or designed to be a sawblade path guide, but is intended to be an indicator means, warning the operator that a possible derailment is about to occur and supplying a means for suppressing this failure.
The operator is to obey these warning signs and move the workpiece so that the teeth of the sawblade disengage from the workpiece and the sawblade resumes its intended path. Disregarding these warning sings by proceeding with the work process would lead to the eventual destruction of the wheel and the sawblade.
Which concludes that this wheel can not be described as being a bearing applying pressure against the sawblade as it is known in the art because it does not function as a guide and only performs it's function when failure is about to occur.
It further concludes that in addition to it's failure prevention ability, the turning of the wheel by the corrugated teeth of the sawblade gives the wheel the additional distinctive feature of a noisy vibrating warning indicator, which are not known in the field of bandsaw applications. While the above descriptions contain many specifities, these should not be construed as limitations on the scope of the invention, but rather as an implication of one preferred embodiment thereof.
Many other variations are possible. For example the optional means of the adjustable screw to stabilize the wheel, the size and composition of the wheel, the number of devices installed to a bandsaw. The bracket functions and configurations of this device as shown in FIG. 1, 2 and 3 are strictly design choices that are known in the art and serve only as examples, as there are different ways to best install this among the varying bandsaw models. Accordingly, the scope of the invention should not be determined limited by these optionally illustrated embodiments.
However, the above mentioned existing guide assemblies fail to recognize the issue for finding a way to prevent the saw-blade from disengaging from this guide assembly and causing derailment, whereby rendering a complete failure of the saw operation. These systems fail to provide a solution to that problem. This invention is that missing element which now completely prevents sawblade derailments and has not been discussed by any prior art development. And more directly has not been suggested by any other bandsaw housing or guide assembly as a possible prevention mechanism to derailment. 'The wheel of this device is not in constant contact with the sawblade, but only engages as the saw-blade begins to disengage from the existing guide assembly in the direction of the operator. This rotating wheel stops the saw-blade from diverting any further from its intended path, and thereby preventing any derailment. This contact also begins rotating the wheel and consequently reduces wear on the wheel and the cutting edge of the sawblade. In the very established field of bandsaw manufacturing most possible innovations have been developed, but this device, albeit small, is a substantial improvement in the field.
To further define the circumstances of bandsaw failure some of the customary band saw cutting operations such as crosscutting, ripping, mitering, compound cutting and corrective re-sawing pull the blade off of its guide assembly. That is because the corrugated teeth of the sharp saw blade entangle with and won't let go of the work-piece.
This behavior occurs often when corrective re-sawing has to be done as is common in any of the saw operations mentioned above. Corrective re-sawing is a procedure, whereby the work-piece has to be slightly moved backwards toward the operator to correct any curve, straight or pattern cut which were not accurately carried out. As this work-piece is moved towards the operator, it pulls the still entangled saw-blade right past the guides until a derailment occurs. Despite the established history of bandsaw blade derailments, this fact has always been accepted as standard behavior. There have been no recognizable developments to address this concern since a solution was not expected to be logical. This device however provide a new appreciation for a solution to a problem that has not been approached before.
The strength of innovation of this invention stems from the fact that it is a counter-intuitive action to put something in front of the cutting edge of a sawblade that is not intended to be cut. Despite the fact that using guide bearings or guide pads to apply pressure to a sawblade may be known, the expected result of placing such a bearing in front of the cutting edge would yield a destructive effect and render the device inoperable. Nor do these previous systems express or imply any suggestions for prevention of complete blade derailment in this manner. Moreover, the traditional technique of applying pressure with bearings serves only as a path guide for the smooth edges of the sawblade. However, since the incorporated wheel of this invention is composed of a material suitable for minimizing abrasion due to friction on the saw blade and on the wheel itself and because it rotates along with the movement of the cutting edge of the sawblade, the unexpected result is that it counteracts the cutting ability of this sawblade~ against this wheel.
~lbjects and Advantages The prirnary object of this invention is to provide a means of preventing bandsaw blade derailments while additionally minimizing damage to the bandsaw and the failure prevention device when in use. This subsequently also increases the efficiency of otherwise prior art accident prone bandsaws and significantly reducing breakdowns, sawblade replacements and a ruined work. The prior art bandsaw derailment is a jarring experience that endangers the safety of the operator, as the impact-forces of the derailing sharp teeth of the saw-blade can injure the operators limbs and body. The removal of this danger is the end result of this innovation.
An additional functional byproduct of this invention is that when the blade comes in contact with the wheel of the bandsaw failure prevention device it generates a significant amount of vibration and noise. This is due to the fact that, despite the absorptive nature of the composition of the wheel, the rough edge of the cutting edge of the blade wilt cause an irregular amount of friction. This distinguishable feature aids as a warning and indication to the user that the device is performing it's function. The sound as well as the vibration factors are part of the devices appreciable novel structural features and would be unnecessarily fulfilled by any other existing bandsaw subsystem, including the aforementioned guide bearing assemblies.
This invention is the entirely missing element that now completely prevents sawblade derailments. The wheel of this device is not in constant contact with the sawblade, but only engages as the saw-blade begins to disengage from the existing guide assembly in the direction of the operator. This rotating wheel stops the saw-blade from divertingi any further from its intended path, and thereby preventing such a derailment. This contact also begins rotating the wheel and, in addition to the abrasion minimizing material composition of the wheel, consequently reduces wear on the wheel and the cutting edge of the sawblade. This device is a substantial improvement in the established field of bandsaw manufacturing and provides a new appreciation for a solution to a ~rroblem that has not been approached before due to the illogical nature of placing an object in front of a sawblade that is not intended to be cut.
Summar~i of the Present Invention The present invention provides a anti-derailment saw-blade guide device which overcomes all of the above-mentioned disadvantages.
In brief, the objects and advantages of the present invention include: the provision of an anti-derailment device for bandsaws consisting of a bracket with an optional hinged fork furnished with a wheel and an optional adjustment screw. This device is installed in front of the cutting edge of the sawblade and overcomes the afore-noted deficiencies of the prior art in band saw operations. This solution to general derailments is a long felt need that is fulfilled by this invention.
Brief Descril4tion of Drawing A Better understanding of the present invention will be had upon reference to the following detailed description when read in conjunction with the accompanying drawings, wherein like reference characters refer to the like parts throughout the several views, and in which:
FIG. 1 shows the installed bandsaw failure preventing device along with the existing saw-blade guide assembly as it would be located on a bandsaw work table.
FIG. 2 shows the bandsaw failure preventing device installed on the underside of a band-saw worktable with its existing guide assembly. This below the worktable installation figure only serves to demonstrate an optional mounting location.
FIG. 3 shows the bandsaw failure preventing device, consisting of a wheel mounted to an optional hingeable fork installed to a bracket with an optional adjustment screw.
Desci~~tion of the Invention 1. Description of the Invention FIG. 1 shows the installed bandsaw failure preventing device along with the existing saw-blade guide assembly as it would be located on top of a bandsaw work table. This figure show the device, consisting of a wheel 6 mounted to a bracket 8 with an optional adjustment screw 10, being installed in front of the cutting edge of the sawblade.
FIG. 2 shows the bandsaw failure preventing device installed on the underside of a band-saw worktable with its existing guide assembly. The wheel 6 and bracket of this device are clearly visible. This below the worktable installation figure only serves to demonstrate an optional mounting location.
FIG. 3 shows a more detailed view of the bandsaw failure preventing device, consisting of a~ wheel 6, mounted to an optional hinged fork 12 via an axle 14 installed to a mounting plate 8 via said hinge 16. The fork can be hinged and furnished with an optional adjustible screw 10 if saw blades of different dimensions are used for different applications. 'This optional screw 10 sets the spacing between the wheel 6 and the blade (see FIG. 1 ) by moving the hinged fork 12 to which the wheel 6 is mounted.
This device could also be made without the benefit of this optional hinged fork 12 and the optional adjusting screw 10. This said fixed bracket could be made by having set distances for certain size s;aw-blades and bandsaw configurations.
2. Operation of the Invention The bandsaw failure preventing device consists of a wheel FIG. 1 part 6 mounted to a bracket 8. and is installed in front of the cutting edge of the host endless bandsaw-blade. It is the rotation of this wheel against the sawblade that yields the unexpected result and functionality of a device that prevents blade derailment from the normally destructive edge of the sawblade and additionally functions as a warning system to the user that such failure is about to occur.
Any existing prior art bandsaw is furnished with a blade guide assembly similar to the one as seen in FIG. 1 consisting of the upper and lower saw-blade guides or bearings which provide free running movement without twisting of the blade.
This same existing guide assembly as seen in FIG. 1 is also furnished with a rear mounted guide bearing for engaging the saw-blade's smooth rear surface during cutting.
Some of the customary band saw cutting operations such as cross-cutting, ripping, mitering, compound cutting and corrective re-sawing commonly cause the saw blade to derail and come off of its guide assembly. Corrective re-sawing is a procedure, whereby the work-piece has to be slightly moved backwards toward the operator to correct any cut which was not accurately carried out. As this work-piece is moved towards the operator, it pulls the entangled saw-blade right past the guides until a derailment occurs.
FIG. 1 shows a typical existing saw-blade guide assembly as it would be located on top of the worktable. The saw-blade as shown in FIG. 1 is shown just about to derail as it is no longer confined between the guide-bearings or guide pads and the wheel of the bandsaw failure preventing device is just about to engage with the cutting edge of the saw-blade and would begin rotating, thereby stopping the blade from further derailment while preventing damage to the device itself.
FIG. 3 shows the bandsaw failure preventing device in a more detailed fashion, consisting of .a wheel 6, mounted to an optional hinged fork 12 via axle 14 installed to a bracket 8 via optional hinge 16. The fork has to be optionally hinged and furnished with an optional adjustable screw 10 if saw blades of different dimensions are used for different applications. This optional screw 10 sets the spacing between the wheel 6 and the blade (sef~ FIG. 1 ) by moving the hinged fork 12 to which the wheel 6 is mounted.
This device a~uld also be made without the benefit of this optional hinged fork 12 and the optional adjusting screw 10. This fixed bracket could be made by having set distances for certain size saw-blades and bandsaw configurations.
The optional adjusting screw 10 can also be substituted with any other similar distance limiting mechanism (like a spring or a plastic cylinder), as long as the wheel can be positioned at an optimum distance from the saw-blade.
This device is independently installed and is not part the existing guide assembly and fulfills a function not at all intended by this traditional guide assembly.
3. Conclusion Thus the reader will see that the bandsaw failure prevention device provides an economical, efficient, logical and safe device which can be used by laymen as well as professionals alike. The wheel of this invention is not intended or designed to be a sawblade path guide, but is intended to be an indicator means, warning the operator that a possible derailment is about to occur and supplying a means for suppressing this failure.
The operator is to obey these warning signs and move the workpiece so that the teeth of the sawblade disengage from the workpiece and the sawblade resumes its intended path. Disregarding these warning sings by proceeding with the work process would lead to the eventual destruction of the wheel and the sawblade.
Which concludes that this wheel can not be described as being a bearing applying pressure against the sawblade as it is known in the art because it does not function as a guide and only performs it's function when failure is about to occur.
It further concludes that in addition to it's failure prevention ability, the turning of the wheel by the corrugated teeth of the sawblade gives the wheel the additional distinctive feature of a noisy vibrating warning indicator, which are not known in the field of bandsaw applications. While the above descriptions contain many specifities, these should not be construed as limitations on the scope of the invention, but rather as an implication of one preferred embodiment thereof.
Many other variations are possible. For example the optional means of the adjustable screw to stabilize the wheel, the size and composition of the wheel, the number of devices installed to a bandsaw. The bracket functions and configurations of this device as shown in FIG. 1, 2 and 3 are strictly design choices that are known in the art and serve only as examples, as there are different ways to best install this among the varying bandsaw models. Accordingly, the scope of the invention should not be determined limited by these optionally illustrated embodiments.
Claims (5)
1. A bandsaw safety device comprising:
a wheel composed of material suitable for minimizing abrasion due to friction when in contact with the cutting edge of a bandsaw blade, a bracket with axle to hold said wheel in front of the cutting edge of the bandsaw blade wherein the axis of rotation of said wheel is horizontal and perpendicular to the axis of rotation of said blade;
whereby preventing bandsaw blade derailment.
a wheel composed of material suitable for minimizing abrasion due to friction when in contact with the cutting edge of a bandsaw blade, a bracket with axle to hold said wheel in front of the cutting edge of the bandsaw blade wherein the axis of rotation of said wheel is horizontal and perpendicular to the axis of rotation of said blade;
whereby preventing bandsaw blade derailment.
2. The bracket as in claim 1 enabling a means for adjustment in distance between the wheel and the host bandsaw blade for use when varying sawblade sizes are employed.
3. A bracket as in claim 1 comprising:
a mounting plate for mounting to the bandsaw, a fork affixed to said mounting plate via hinge mechanism, an axle mounted within said fork, an adjustment mechanism used to set the distance between the mounting plate and the fork and thereby moving the wheel as in claim 1 closer to the host bandsaw blade.
a mounting plate for mounting to the bandsaw, a fork affixed to said mounting plate via hinge mechanism, an axle mounted within said fork, an adjustment mechanism used to set the distance between the mounting plate and the fork and thereby moving the wheel as in claim 1 closer to the host bandsaw blade.
4. The adjustment mechanism as in claim 2 functioning by means of a screw pivoting on the mounting plate and threaded through the fork; whereby allowing use of varying sawblade sizes and maintaining optimum distance between the wheel and the sawblade.
5. The wheel as in claim 1 rotates when coming in contact with the sawblade thus further reducing wear of said wheel and the host bandsaw blade.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2270815 CA2270815C (en) | 1999-05-07 | 1999-05-07 | Bandsaw failure preventer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2270815 CA2270815C (en) | 1999-05-07 | 1999-05-07 | Bandsaw failure preventer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2270815A1 CA2270815A1 (en) | 2000-11-07 |
| CA2270815C true CA2270815C (en) | 2006-07-18 |
Family
ID=29588936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2270815 Expired - Fee Related CA2270815C (en) | 1999-05-07 | 1999-05-07 | Bandsaw failure preventer |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2270815C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110385752B (en) * | 2019-07-19 | 2023-12-29 | 新乐市祥瑞机械设备有限公司 | A multifunctional long arm saw |
-
1999
- 1999-05-07 CA CA 2270815 patent/CA2270815C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CA2270815A1 (en) | 2000-11-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10882207B2 (en) | Table saws with safety systems and systems to mount and index attachments | |
| US7707920B2 (en) | Table saws with safety systems | |
| US5692425A (en) | Protective device for saw operators | |
| US7509899B2 (en) | Retraction system for use in power equipment | |
| EP2969423B1 (en) | Blade drop power tool with dust management | |
| CA2251526A1 (en) | Method for variably controlling work feed rate for cutting wood, metal and other materials | |
| US20150283630A1 (en) | Table saws with elevation mechanisms | |
| US5540129A (en) | Anti-splintering device for sawing machines having a saw blade | |
| CA2270815C (en) | Bandsaw failure preventer | |
| US5675898A (en) | Anti-splintering device for sawing machines having a saw blade | |
| US5826477A (en) | Combination guide and sawdust remover | |
| US5964135A (en) | Sawdust removing apparatus for saw machine | |
| GB2330328A (en) | Jigsaw blade guide and support assembly | |
| GB2406071A (en) | Shoe assembly for reciprocating tool | |
| CA2106059C (en) | Anti-splintering device for sawing machines having a saw blade | |
| JPH03128204A (en) | Safety device of travelling circular sawing machine | |
| US11396054B2 (en) | Method of cutting with a band saw | |
| JP2859701B2 (en) | Chip removal equipment for sawing machines | |
| US6481472B1 (en) | Hold down and guard | |
| JPH0340562Y2 (en) | ||
| CA2228853A1 (en) | Lubrication for saws | |
| EP0710525B1 (en) | Sawdust removing apparatus for saw machine | |
| KR920005571Y1 (en) | Safety devices of meat grinder | |
| WO2003020479A3 (en) | Forming complex shapes |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKLA | Lapsed |
Effective date: 20150507 |