CA1171761A - Power saw guide - Google Patents
Power saw guideInfo
- Publication number
- CA1171761A CA1171761A CA000387693A CA387693A CA1171761A CA 1171761 A CA1171761 A CA 1171761A CA 000387693 A CA000387693 A CA 000387693A CA 387693 A CA387693 A CA 387693A CA 1171761 A CA1171761 A CA 1171761A
- Authority
- CA
- Canada
- Prior art keywords
- support member
- angle
- guide
- power saw
- angle member
- 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
Links
Abstract
ABSTRACT OF THE DISCLOSURE
THIS INVENTION relates to a method for cutting timber into multiple lengths using a power saw guide which includes an elongate support member for supporting a strip and an angle member extending laterally of the support member.
The method also includes a power saw guide which comprises an elongate support member for supporting a guide strip and an angle member extending laterally of the support member.
The construction and arrangement of the power saw guide is such that in use the guide strip may be supported by the support member with part thereof extending past the support and outwardly from one end thereon. This enables a laterally extending part of a power saw to be placed adjacent an outwardly extending part of the guide" strip and to bear against an angle member whereby a workpiece comprising an elongate section of timber or other cuttable material may be located adjacent a support member with the angle member extending across thereon. This enables a workpiece to be cut along a cutting line formed by a free end and the outwardly extending part of the guide strip and the guide point marked on the workpiece to be coincidental with the free end.
THIS INVENTION relates to a method for cutting timber into multiple lengths using a power saw guide which includes an elongate support member for supporting a strip and an angle member extending laterally of the support member.
The method also includes a power saw guide which comprises an elongate support member for supporting a guide strip and an angle member extending laterally of the support member.
The construction and arrangement of the power saw guide is such that in use the guide strip may be supported by the support member with part thereof extending past the support and outwardly from one end thereon. This enables a laterally extending part of a power saw to be placed adjacent an outwardly extending part of the guide" strip and to bear against an angle member whereby a workpiece comprising an elongate section of timber or other cuttable material may be located adjacent a support member with the angle member extending across thereon. This enables a workpiece to be cut along a cutting line formed by a free end and the outwardly extending part of the guide strip and the guide point marked on the workpiece to be coincidental with the free end.
Description
~71~61 BAC~GROUND OF THE INVENTION
Field of the Invention This invention relates to a guide for power saws and in particular to obtaining a cut at a predetermined angle to the longitudinal axis of a workpiece such as a length of timber.
Hitherto lengths of timber for use in flooring, fences and other building or constructional purposes are cut into desired lengths by the use of a square or guide having a straight guide edge which functions in guiding the cutting action of the power saw. However, it has been found that this conventional method of cutting timber is often inaccurate and thereby time consuming in operation as repetition is often necessary.
SUMMARY OF THE INVENTION
It is therefore an object of the invention to provide guide for a power saw which alleviates the above-mentioned problems associated with the prior art.
The invention includes a method for cutting timber into multiple lengths utilizing a power saw guide including an elongate support member for supporting a guide strip and an angle member extending laterally of the support member, said method including the steps of:
(i) inserting or locating the guide strip so that the guide strip is supported by the support member and extending part of the guide strip past the angle member and outwardly from one end thereof;
(ii) locating a workpiece comprising an elongate section of timber or other cuttable material so that the workpiece is placed adjacent the support member and wherein the angle member extends across the workpiece;
(iii) making a guide mark on the workpiece
Field of the Invention This invention relates to a guide for power saws and in particular to obtaining a cut at a predetermined angle to the longitudinal axis of a workpiece such as a length of timber.
Hitherto lengths of timber for use in flooring, fences and other building or constructional purposes are cut into desired lengths by the use of a square or guide having a straight guide edge which functions in guiding the cutting action of the power saw. However, it has been found that this conventional method of cutting timber is often inaccurate and thereby time consuming in operation as repetition is often necessary.
SUMMARY OF THE INVENTION
It is therefore an object of the invention to provide guide for a power saw which alleviates the above-mentioned problems associated with the prior art.
The invention includes a method for cutting timber into multiple lengths utilizing a power saw guide including an elongate support member for supporting a guide strip and an angle member extending laterally of the support member, said method including the steps of:
(i) inserting or locating the guide strip so that the guide strip is supported by the support member and extending part of the guide strip past the angle member and outwardly from one end thereof;
(ii) locating a workpiece comprising an elongate section of timber or other cuttable material so that the workpiece is placed adjacent the support member and wherein the angle member extends across the workpiece;
(iii) making a guide mark on the workpiece
- 2 -1~71761 coinciding with a free end of the outwardly extending part of the guide strip;
(iv) placing a laterally extending part of a power saw adjoining the cutting blade S thereof adjacent to the outwardly extending part of the guide strip and bearing against the angle member so that said cutting blade is substantially in line with the free end of the outwardly extending part of the guide strip and the guide mark on the workpiece; and lv) cutting the workpiece along a cutting line formed by the free end of the outwardly extending part of the guide strip and the guide mark on the workpiece.
The invention also includes a power saw guide which comprises an elongate support member for supporting a guide strip and an angle member extending laterally of the support member, the construction and arrangement being such that in use the guide strip may be supported by the support member with part thereof extending past the support member and outwardly from one end thereof whereby a laterally extending part of a power saw may be placed adjacent the outwardly extending part of the guide strip and als~ bearing against the angle member whereby a workpiece comprising an elongate section of timber or other cuttable material located adjacent the support member has the angle member extending across thereof and wherein the workpiece may be cut along a cutting line formed by a free end of the outwardly extending part of the guide strip and a guide point marked on the workpiece coinciding with the said free end.
Preferably theoutwardly extending part of the guide strip is extended a slight distance past the cutting blade of the power saw and this projecting part is severed
(iv) placing a laterally extending part of a power saw adjoining the cutting blade S thereof adjacent to the outwardly extending part of the guide strip and bearing against the angle member so that said cutting blade is substantially in line with the free end of the outwardly extending part of the guide strip and the guide mark on the workpiece; and lv) cutting the workpiece along a cutting line formed by the free end of the outwardly extending part of the guide strip and the guide mark on the workpiece.
The invention also includes a power saw guide which comprises an elongate support member for supporting a guide strip and an angle member extending laterally of the support member, the construction and arrangement being such that in use the guide strip may be supported by the support member with part thereof extending past the support member and outwardly from one end thereof whereby a laterally extending part of a power saw may be placed adjacent the outwardly extending part of the guide strip and als~ bearing against the angle member whereby a workpiece comprising an elongate section of timber or other cuttable material located adjacent the support member has the angle member extending across thereof and wherein the workpiece may be cut along a cutting line formed by a free end of the outwardly extending part of the guide strip and a guide point marked on the workpiece coinciding with the said free end.
Preferably theoutwardly extending part of the guide strip is extended a slight distance past the cutting blade of the power saw and this projecting part is severed
3~ by the power saw. Then a mark such as a transverse line may ~17i761 be made on the timber workpiece in line with the severed edge of the guide strip before cutting the workpiece into multiple lengths.
Preferably the support member is tubular or channel shaped and more suitably is channel shaped desirably having a cross section in the shape of an inverted U.
Suitable retaining means may be used to retain a guide strip within the channel member such as thumb screws. The angle member may be attached to the channel member adjacent one end thereof. The angle member may be provided with an upwardly extending flange along one side edge thereof.
The angle member may be rigidly attached to the support member such that a cut may be made to the workpiece at 90 to the longitudinal axis thereof. More preferably however the angle member is movably or pivotally attached to the support member and may be releasably retained at a desired angle setting.
In one form of accomplishing this there may be provided a link member interconnecting the angle member and the support member and pivotally attached to both the angle member and the support member whereby said angle member may be set at a predetermined angle relative to the support member. Suitably the proximal end of the link member in this first embodiment may move in a slot or groove located in the support member and may be releasably retained therein so as to provide said desired angle setting.
In another form or embodiment of the invention the angle member may include a protractor extending to one side thereof with the angle member forming the base of the protractor. The support member may include any suitable means for releasably retaining the arcuate or curved portion of the protractor in a desired angle setting relative to the longitudinal axis of the workpiece so as to provide said predetermined angle. In this embodiment the angle member may be pivotally attached to the support member.
~71761 BRIEF D~SCRIPTION OF THE DRAWINGS
Reference is now made to a preferred embodiment of the invention as shown in the drawings, wherein:
FIG 1 represents a perspective view of the power saw guide of the invention; and FIG 2 represents a perspective view of the power saw guide of FIG 1 in use with a guide strip power saw and elongate workpiece.
FIG 3 represents a perspective view of the invention illustrating a modified power saw guide of the invention including the above described link member interconnecting the angle member and the support member; and FIG 4 represents a perspective view of another modified power saw guide in accordance with the invention including the above described protractor.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In the drawings there is shown power saw guide 10 including support member 11 in the form of a U-shaped channel section with thumb screws 12. Attached at one end of support member 11 is angle member 13 which extends at right angles to the longitudinal axis of support member 11.
Angle member 13 on one side edge has upstanding flange 14.
On angle member 13 are measurements 15.
In FIG 2 there is shown guide strip 16 with outwardly extending part 16A extending out through one end of channel member 11. Guide strip 16 is retained within channel member 11 by thumb screws 12. Part 16A has an end 19 which is aligned with the cutting line 20 of a cutting blade (not shownJ of a power saw having a power saw base plate 17 defined in dotted outline. There is also included a work piece 21 having a guide mark l9A aligned with end 19 of part 16A and cutting line 20. Lateral extending part 22 of base plate 17 having a marginal edge 23 bears against flange 14 of angle member 13.
In use the power saw is maintained to keep a ~71761 substantially straight cut 18 of workpiece 21 by flange 14 to cut off workpiece 21 in whatever multiple lengths are required. By placing a mark or forming a guide point l9A
on member 21 a precision cut of required length and angle may be readily obtained.
FIG 3 shows link member 24 pivotally attached to angle member 13 at 25. Angle member 13 is pivotally attached to support member 11 at 26. Link member 24 has an inner end which moves in groove 27 and is retained therein by thumb screw 28. As shown thumb screw 28 maintains link member 24 such that angle member 13 is maintained at an angle of 90 to support member 11.
FIG 4 illustrates another means of pivotally attaching angle member 13 to support member 11. In this embodiment there is shown an arcuate portion 29 of a protractor which has measurements (not shown) marked on ~t.
Portion 29 is rigidly attached to angle member 13 and may be releasably retained at any desired angle by use of clamp-ing block 31 which may be moved into and out of engagement with arcuate portion 29 by the use of thumbscrew 32. There is also included pointer 30 for giving a correct indication of the precise angle of cut relative to the longitudinal axis of the workpiece 21.
Angle member 13 instead of extending at right angles to support member 11 as shown in FIG 3 and 4 may extend at an acute angle thereto if desired (e.g. 30o, 45D~
or 60) so that multiple lengths of timber may be obtained each having their ends cut at precisely the same angle if required.
The illustrated embodiments of FIGS 3 and 4 are useful in that previously wherein it was desired to obtain a cut at a predetermined angle relative to the longitudinal axis of the workpiece this required the use of a mitre box or alternatively required the marking of a line on the top surface of the workpiece at the desired angle.
Preferably the support member is tubular or channel shaped and more suitably is channel shaped desirably having a cross section in the shape of an inverted U.
Suitable retaining means may be used to retain a guide strip within the channel member such as thumb screws. The angle member may be attached to the channel member adjacent one end thereof. The angle member may be provided with an upwardly extending flange along one side edge thereof.
The angle member may be rigidly attached to the support member such that a cut may be made to the workpiece at 90 to the longitudinal axis thereof. More preferably however the angle member is movably or pivotally attached to the support member and may be releasably retained at a desired angle setting.
In one form of accomplishing this there may be provided a link member interconnecting the angle member and the support member and pivotally attached to both the angle member and the support member whereby said angle member may be set at a predetermined angle relative to the support member. Suitably the proximal end of the link member in this first embodiment may move in a slot or groove located in the support member and may be releasably retained therein so as to provide said desired angle setting.
In another form or embodiment of the invention the angle member may include a protractor extending to one side thereof with the angle member forming the base of the protractor. The support member may include any suitable means for releasably retaining the arcuate or curved portion of the protractor in a desired angle setting relative to the longitudinal axis of the workpiece so as to provide said predetermined angle. In this embodiment the angle member may be pivotally attached to the support member.
~71761 BRIEF D~SCRIPTION OF THE DRAWINGS
Reference is now made to a preferred embodiment of the invention as shown in the drawings, wherein:
FIG 1 represents a perspective view of the power saw guide of the invention; and FIG 2 represents a perspective view of the power saw guide of FIG 1 in use with a guide strip power saw and elongate workpiece.
FIG 3 represents a perspective view of the invention illustrating a modified power saw guide of the invention including the above described link member interconnecting the angle member and the support member; and FIG 4 represents a perspective view of another modified power saw guide in accordance with the invention including the above described protractor.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In the drawings there is shown power saw guide 10 including support member 11 in the form of a U-shaped channel section with thumb screws 12. Attached at one end of support member 11 is angle member 13 which extends at right angles to the longitudinal axis of support member 11.
Angle member 13 on one side edge has upstanding flange 14.
On angle member 13 are measurements 15.
In FIG 2 there is shown guide strip 16 with outwardly extending part 16A extending out through one end of channel member 11. Guide strip 16 is retained within channel member 11 by thumb screws 12. Part 16A has an end 19 which is aligned with the cutting line 20 of a cutting blade (not shownJ of a power saw having a power saw base plate 17 defined in dotted outline. There is also included a work piece 21 having a guide mark l9A aligned with end 19 of part 16A and cutting line 20. Lateral extending part 22 of base plate 17 having a marginal edge 23 bears against flange 14 of angle member 13.
In use the power saw is maintained to keep a ~71761 substantially straight cut 18 of workpiece 21 by flange 14 to cut off workpiece 21 in whatever multiple lengths are required. By placing a mark or forming a guide point l9A
on member 21 a precision cut of required length and angle may be readily obtained.
FIG 3 shows link member 24 pivotally attached to angle member 13 at 25. Angle member 13 is pivotally attached to support member 11 at 26. Link member 24 has an inner end which moves in groove 27 and is retained therein by thumb screw 28. As shown thumb screw 28 maintains link member 24 such that angle member 13 is maintained at an angle of 90 to support member 11.
FIG 4 illustrates another means of pivotally attaching angle member 13 to support member 11. In this embodiment there is shown an arcuate portion 29 of a protractor which has measurements (not shown) marked on ~t.
Portion 29 is rigidly attached to angle member 13 and may be releasably retained at any desired angle by use of clamp-ing block 31 which may be moved into and out of engagement with arcuate portion 29 by the use of thumbscrew 32. There is also included pointer 30 for giving a correct indication of the precise angle of cut relative to the longitudinal axis of the workpiece 21.
Angle member 13 instead of extending at right angles to support member 11 as shown in FIG 3 and 4 may extend at an acute angle thereto if desired (e.g. 30o, 45D~
or 60) so that multiple lengths of timber may be obtained each having their ends cut at precisely the same angle if required.
The illustrated embodiments of FIGS 3 and 4 are useful in that previously wherein it was desired to obtain a cut at a predetermined angle relative to the longitudinal axis of the workpiece this required the use of a mitre box or alternatively required the marking of a line on the top surface of the workpiece at the desired angle.
Claims (19)
1. A method of cutting timber or other cuttable material utilizing a power saw guide including an elongate support member for supporting a guide strip and an angle member extending laterally of the support member, said method including the steps of:
(i) inserting or locating the guide strip so that the guide strip is supported by the support member and extending part of the guide strip past the angle member and outwardly from one end thereof;
(ii) locating a workpiece comprising an elongate section of timber or other cuttable material so that the workpiece is placed adjacent the support member and wherein the angle member extends across the workpiece;
(iii) making a guide mark on the workpiece coinciding with a free end of the outwardly extending part of the guide strip;
(iv) placing a laterally extending part of a power saw adjoining the cutting blade thereof adjacent to the outwardly extending part of the guide strip and bearing against the angle member so that said cutting blade is substantially in line with the free end of the outwardly extending part of the guide strip and the guide mark on the workpiece;
and (v) cutting the workpiece along a cutting line formed by the free end of the outwardly extending part of the guide strip and the guide mark on the workpiece.
(i) inserting or locating the guide strip so that the guide strip is supported by the support member and extending part of the guide strip past the angle member and outwardly from one end thereof;
(ii) locating a workpiece comprising an elongate section of timber or other cuttable material so that the workpiece is placed adjacent the support member and wherein the angle member extends across the workpiece;
(iii) making a guide mark on the workpiece coinciding with a free end of the outwardly extending part of the guide strip;
(iv) placing a laterally extending part of a power saw adjoining the cutting blade thereof adjacent to the outwardly extending part of the guide strip and bearing against the angle member so that said cutting blade is substantially in line with the free end of the outwardly extending part of the guide strip and the guide mark on the workpiece;
and (v) cutting the workpiece along a cutting line formed by the free end of the outwardly extending part of the guide strip and the guide mark on the workpiece.
2. A method as claimed in Claim 1, wherein before step (i) the outwardly extending part of the guide strip is projected a slight distance past the cutting blade of the power saw which has already been placed in position adjacent said outwardly extending part and bearing against the support member and the projecting part of the guide strip extending past the cutting blade of the power saw is severed by the power saw.
3. A method as claimed in Claim 1, wherein the angle member extends at right angles to the axis of the workpiece.
4. A method as claimed in Claim 1, wherein the support member is a U-shaped channel member.
5. A method as claimed in Claim 1, wherein there is further included a link member interconnecting the angle member and the support member and pivotally attached to both the angle member and the support member whereby the link member may be adjusted so that the angle member may be set at a desired angle relative to the support member.
6. A method as claimed in Claim 5, wherein the proximal end of the link member may move in a slot or groove located in the support member and be releasably retained therein to provide said desired angle of the angle member relative to the support member.
7. A method as claimed in Claim 2, 3 or 4, wherein there is further included a link member intercon-necting the angle member and the support member and pivotally attached to both the angle member and the support member whereby the link member may be adjusted so that the angle member may be set at a desired angle relative to the support member.
8. A method as claimed in Claim 1, 2 or 3, wherein said angle member includes an arcuate protractor portion extending to one side of the angle member which protractor portion may be movable relative to the support member and be releasably retained thereto so as to provide said desired angle of the angle member relative to the support member, said angle member being pivotally attached to the support member.
9. A method as claimed in Claim 4, wherein said angle member includes an arcuate protractor portion extend-ing to one side of the angle member which protractor por-tion may be movable relative to the support member and be releasably retained thereto so as to provide said desired angle of the angle member relative to the support member, said angle member being pivotally attached to the support member.
10. A power saw guide which comprises an elongate support member for supporting a guide strip and an angle member extending laterally of the support member, the con-struction and arrangement being such that in use the guide strip may be supported by the support member with part thereof extending past the support member and outwardly from one end thereof whereby a laterally extending part of a power saw may be placed adjacent to the outwardly extending part of the guide strip and also bearing against the angle member whereby a workpiece comprising an elongate section of timber or other cuttable material located adjacent the support member has the angle member extending across thereof and wherein the workpiece may be cut along a cutting line formed by a free end of the outwardly extending part of the guide strip and a guide strip marked on the workpiece coinciding with the said free end.
11. A power saw guide as claimed in Claim 10, wherein the elongate support member is formed from a U-shaped channel member.
12. A power saw guide as claimed in Claim 10, wherein there are provided thumb screws associated with the U-shaped channel member to maintain the guide strip within the channel member in use.
13. A power saw guide as claimed in Claim 10, wherein the angle member extends at right angles to the support member.
14. A power saw guide as claimed in Claim 13, wherein there is further included a link member intercon-necting the angle member and the support member and pivot-ally attached to both the angle member and the support member whereby the link member may be adjusted so that the angle member may be set at a desired angle relative to the support member.
15. A power saw guide as claimed in Claim 11, 12 or 13, wherein the angle member extends at right angles to the support member.
16. A power saw guide as claimed in Claim 11, 12 or 13, wherein there is further included a link member interconnecting the angle member and the support member and pivotally attached to both the angle member and the support member whereby the link member may he adjusted so that the angle member may be set at a desired angle relative to the support member.
17. A power saw guide as claimed in Claim 14, wherein the proximal end of the link member may move in a slot or groove located in the support member and be releas-ably retained therein to provide said desired angle of the angle member relative to the support member.
18. A power saw guide as claimed in Claim 10, 11 or 12, wherein said angle member includes an arcuate protractor portion extending to one side of the angle member which protractor protion may be movable relative to the support member and be releasably retained thereto so as to provide said desired angle of the angle member relative to the support member, said angle member being pivotally attached to the support member.
19. A power saw guide as claimed in Claim 13, wherein said angle member includes an arcuate protractor portion extending to one side of the angle member which protractor portion may be movable relative to the support member and be releasably retained thereto so as to provide said desired angle of the angle member relative to the support member, said angle member being pivotally attached to the support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000387693A CA1171761A (en) | 1981-10-09 | 1981-10-09 | Power saw guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000387693A CA1171761A (en) | 1981-10-09 | 1981-10-09 | Power saw guide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1171761A true CA1171761A (en) | 1984-07-31 |
Family
ID=4121139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000387693A Expired CA1171761A (en) | 1981-10-09 | 1981-10-09 | Power saw guide |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1171761A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2304309A1 (en) * | 2007-03-26 | 2008-10-01 | Capñas Y Gomez, S.L. | Guide square |
-
1981
- 1981-10-09 CA CA000387693A patent/CA1171761A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2304309A1 (en) * | 2007-03-26 | 2008-10-01 | Capñas Y Gomez, S.L. | Guide square |
| WO2008116953A1 (en) * | 2007-03-26 | 2008-10-02 | Cañas Y Gómez, S.L. | Guide square |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |