CA1182734A - Bending tool - Google Patents
Bending toolInfo
- Publication number
- CA1182734A CA1182734A CA000404073A CA404073A CA1182734A CA 1182734 A CA1182734 A CA 1182734A CA 000404073 A CA000404073 A CA 000404073A CA 404073 A CA404073 A CA 404073A CA 1182734 A CA1182734 A CA 1182734A
- Authority
- CA
- Canada
- Prior art keywords
- support frame
- pusher
- pusher member
- bending tool
- abutment block
- 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
Landscapes
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
ABSTRACT OF THE INVENTION:
A bending tool for bending elongate members.
The bending tool includes a support arrangement such as a support frame for supporting the elongate member and also includes a pusher member whereby the pusher members may abut the elongate member. When either of the pusher member or the support frame is moved relative to the other this may cause bending of the elongate member.
The bending tool also includes handles for causing the relative movement between the support frame and the pusher member.
A bending tool for bending elongate members.
The bending tool includes a support arrangement such as a support frame for supporting the elongate member and also includes a pusher member whereby the pusher members may abut the elongate member. When either of the pusher member or the support frame is moved relative to the other this may cause bending of the elongate member.
The bending tool also includes handles for causing the relative movement between the support frame and the pusher member.
Description
3~
BEND ING TOOL
This ,invention relates to a bending tool which is especially adapted for the bending of elongate members such as fence cross members.
Hitherto the benaing of relatively rigid members such as cross members of fences (e.g. wires) has been difficult to achieve on a systematic and orderly basis.
While previous methods have been attempted they have mainly utilized the aid of bending machines such as those used for bending rigid lengths of pipe which are utili~ed as reinforcement members in the Eormation of concrete structures.
Such bending machines however are bulky, expensive and entirely inappropriate for forming curved structures such as curved fences or frameworks on a manual basis.
It is therefore an object of the invention to provide a bending tool which may be utulized to quickly and efficiently form curved structures.
The bending tool of the invention includes:
' support means;
bending means; and, actuating means for actuation of the bending means which is movable relative to the support means or vice versa.
The support means may include a housing or supporting frame or plate for the bending means but most desirably includes a rigid frame including a pair of spaced parallel side members and optionally one or intermediate cross members. There also is suitably included an end cross member or intermediate cross member which functions as an abutment block and may include a recess which may accommodate portion of the bending means in use and wherein the elongate member being bent is sandwiched there-between.
The bending means may include a pusher member ~L a~273~
which may be actuated so that it ~ay hear~against the elongate member to bend same. Suitab~y the pusher member may include a pushrod or push~r block which is movable relative to the above-mentioned support frame. The pusher block is suitably slidably mounted on the rigid support frame. Thus the pusher member may be mounted on slideways or slide grooves on the rigid frame. However this is not necessary and the pusher member may be suitably spaced from the rigid support fra~e an~ movable thereto between the pair of spaced side frame ~embers.
In another arrangement the pusher block may remain stationary and the support frame moved relative thereto upon actuation of the actuating means to bend the elongate member.
The actuating means in one form may include a pair of elongate handles which are similar to bolt cutter handles w~ich may be widely spaced apart when the handles are in their open position.
Each opposed handle is suitably of substantial length and is similar to a bolt cutter handle as described above so as to provide a considerable amount of thrust in actuation of the bending means.
At its end which is proximal to the bending means ~ach handle may include a toggle plate or other suitable connecting member which is pivotally attached to the handle or forward extension thereof and also to an associated portion of a respective side member of the rigid frame.
The in~ention is herein broadly claime~ as a be~ding tool for bending elongate members including: an elongated suppoxt frame; an abutment block attached to said support frame; a pusher member movab~y mounted to the support frame; said ~ember having a working nd surface and a mounting end having a mating bore; a pair o~ opposed recesses, for positioning a workpiece transversely with ~273~
respect to said suppoxt frame, l~cated on opposite sides of the suppo~t fra~e~ a pair of h~dlesi linkage means interconnecting each handle to the support fxame; a longitudinal shaft screw threadedly mou~ted in said mating bore and extending parallel to the length of said support frame whereby said pusher ~embex is adjustably movable by said screw relative to the abutment block;
pivot means interconnecting said shaft scxew to each of said handles; and locking means for selectively locking the shaft screw against move~ent in a selected position in the mating hoxe of the pusher me~ber; the construction and arrangement being such that upon movement oE said handles toward and away from each other said pusher block moves longitudinally with respect to said support frame relative to the abutment block and when an elongate member is located in said recesses and trans-versely of the support frame and interposed between the pusher member and the abutment block said longitudinal movement of the pusher member bends said elongate member and upon release of said locking means said pusher member may be adjustably moved on said shaft relative to the abutment block.
Reference is now made to a preferred embodlment of the invention as shown in the accompany:ing drawings wherein:
Fig. 1 is a top plan view of the bending tool in the closed position;
Fig. 2 is a top plan view of the bending tool shown in Fig. 1 in the open position;
- 2a -3~
FIG 3 is a perspective view of the bending tool shown in FIG l;
FIG ~ is a top plan view of an alternative type of bending tool to that shown in FIG 1 and being illustrated in the closed position;
FIG 5 is a top plan view of the bending tool of FIG 4 in the open position; and, FIG 6 is a perspective view of the bending tool.
of FIG 4.
In the drawings, the bending tool shown includes opposed handles 10, adjustable stops 11, toggle connectors 12 interconnecting each handle 10 to rigid frame 13 com-prising opposed parallel side members 14. E'rame 15 also includes an abutment bloc~ or intermediate cross member 17 There is also shown pusher member 15 having a tapered end surface 16 as shown and being pivotally attached to the inner end portions of each handle 10 at 24. Toggles ].2 are pivotally attached to a respective side frame member 14 at 23.
One handle 10 has an inward extension 22 which is pivotally attached to pusher member 15 at 19. I'here is also shown end cross member or end plate 20 of frame 1.3 which may be moved relative to frame 13 by adjustment screws 18 as is the case with abutment block 17 which has arcuate recess 26 for engagin~ with tapered end surface 16 of the pusher member 15 in the closed position. There is also shown adjustment screws 25 for adjustably mounting toggles 1~.
As shown in FIGS 1-2, the bending tool upon movement of handles 10 from an open position as shown in FIG 2 to a closed position as shown in FIG 1 may bend an elongate member such as metal rod or wire (not shown) wherein the elongate member is interposed between tapered end surface 16 and arcuate recess 26 of abutment block 17.
An elongate member (not shown) may be inserted through opposed gaps 27 in the frame 13 and be retained therein before actuation of pusher member 15 which is moved toward frame 13 as shown by pivoting movement of toggles 12 which in turn is caused by inward movement of handles 10.
In the embodiment shown in FIGS 4-6 there is shown opposed handles lOa, toggle connectors 12a inter-connecting forward extensions 22a of handles lOa to side frame members 14a of support frame 28. Toggle connectors 12a are pivotally attached to each extension 22a at 24a and pivotally attached to each side frame member 14a at 23a. There is also included a shaft 32 having a support member 34 mounted thereon which has lateral ex~ensions or ears 36. Forward extensions 22a of each handle lOa are pivotally mounted to a respective ear 36 at 37.
Shaft 32 is provided with a locknut 33 as shown and also with an adjusting nut 31 which is integral with shaft 32. Shaft 32 is received in a recess or socket 35 of pusher member 15a and may be used to adjust the position o~ pusher member 15a relative to frame 28 so as to provide for different thicknesses of elongate member 40 which may be bent by the bending tool of the invention.
Pusher member 15a is provided with opposed lateral extensions 38 which engage in supporting grooves 39 (shown in dotted outline in FIGS 4-5) in side members 14a.
~ s best shown in FIG 6, frame 28 includes upward extensions 29 of each side frame 14a having abutment surfaces 30. There is provided opposed gaps 27a through which an elongate rod 40 may be inserted before being bent by pusher member 15a. Pusher member 15a has tapered end surface 16a which engages in recess 26a of frame 28 in the closed position. The elonsate member ~0 is interposed between abutment surfaces 30 and pusher member 15a in the open 7~
position as shown in FIG 5 and is bent as shown.
As shown in FIGS 4-6 toggle connectors 12a are pivoted inwardly by inward movement of handles 10 causing longitudinal movement of shaft 32 and pusher member 15a.
It will also be appreciated that instead of inward movement of said handle to cause relative movement between said pusher member and the support frame that in a variation ofthe embodiments described above the relative movement may be caused by outward movement of each handle away from each other.
BEND ING TOOL
This ,invention relates to a bending tool which is especially adapted for the bending of elongate members such as fence cross members.
Hitherto the benaing of relatively rigid members such as cross members of fences (e.g. wires) has been difficult to achieve on a systematic and orderly basis.
While previous methods have been attempted they have mainly utilized the aid of bending machines such as those used for bending rigid lengths of pipe which are utili~ed as reinforcement members in the Eormation of concrete structures.
Such bending machines however are bulky, expensive and entirely inappropriate for forming curved structures such as curved fences or frameworks on a manual basis.
It is therefore an object of the invention to provide a bending tool which may be utulized to quickly and efficiently form curved structures.
The bending tool of the invention includes:
' support means;
bending means; and, actuating means for actuation of the bending means which is movable relative to the support means or vice versa.
The support means may include a housing or supporting frame or plate for the bending means but most desirably includes a rigid frame including a pair of spaced parallel side members and optionally one or intermediate cross members. There also is suitably included an end cross member or intermediate cross member which functions as an abutment block and may include a recess which may accommodate portion of the bending means in use and wherein the elongate member being bent is sandwiched there-between.
The bending means may include a pusher member ~L a~273~
which may be actuated so that it ~ay hear~against the elongate member to bend same. Suitab~y the pusher member may include a pushrod or push~r block which is movable relative to the above-mentioned support frame. The pusher block is suitably slidably mounted on the rigid support frame. Thus the pusher member may be mounted on slideways or slide grooves on the rigid frame. However this is not necessary and the pusher member may be suitably spaced from the rigid support fra~e an~ movable thereto between the pair of spaced side frame ~embers.
In another arrangement the pusher block may remain stationary and the support frame moved relative thereto upon actuation of the actuating means to bend the elongate member.
The actuating means in one form may include a pair of elongate handles which are similar to bolt cutter handles w~ich may be widely spaced apart when the handles are in their open position.
Each opposed handle is suitably of substantial length and is similar to a bolt cutter handle as described above so as to provide a considerable amount of thrust in actuation of the bending means.
At its end which is proximal to the bending means ~ach handle may include a toggle plate or other suitable connecting member which is pivotally attached to the handle or forward extension thereof and also to an associated portion of a respective side member of the rigid frame.
The in~ention is herein broadly claime~ as a be~ding tool for bending elongate members including: an elongated suppoxt frame; an abutment block attached to said support frame; a pusher member movab~y mounted to the support frame; said ~ember having a working nd surface and a mounting end having a mating bore; a pair o~ opposed recesses, for positioning a workpiece transversely with ~273~
respect to said suppoxt frame, l~cated on opposite sides of the suppo~t fra~e~ a pair of h~dlesi linkage means interconnecting each handle to the support fxame; a longitudinal shaft screw threadedly mou~ted in said mating bore and extending parallel to the length of said support frame whereby said pusher ~embex is adjustably movable by said screw relative to the abutment block;
pivot means interconnecting said shaft scxew to each of said handles; and locking means for selectively locking the shaft screw against move~ent in a selected position in the mating hoxe of the pusher me~ber; the construction and arrangement being such that upon movement oE said handles toward and away from each other said pusher block moves longitudinally with respect to said support frame relative to the abutment block and when an elongate member is located in said recesses and trans-versely of the support frame and interposed between the pusher member and the abutment block said longitudinal movement of the pusher member bends said elongate member and upon release of said locking means said pusher member may be adjustably moved on said shaft relative to the abutment block.
Reference is now made to a preferred embodlment of the invention as shown in the accompany:ing drawings wherein:
Fig. 1 is a top plan view of the bending tool in the closed position;
Fig. 2 is a top plan view of the bending tool shown in Fig. 1 in the open position;
- 2a -3~
FIG 3 is a perspective view of the bending tool shown in FIG l;
FIG ~ is a top plan view of an alternative type of bending tool to that shown in FIG 1 and being illustrated in the closed position;
FIG 5 is a top plan view of the bending tool of FIG 4 in the open position; and, FIG 6 is a perspective view of the bending tool.
of FIG 4.
In the drawings, the bending tool shown includes opposed handles 10, adjustable stops 11, toggle connectors 12 interconnecting each handle 10 to rigid frame 13 com-prising opposed parallel side members 14. E'rame 15 also includes an abutment bloc~ or intermediate cross member 17 There is also shown pusher member 15 having a tapered end surface 16 as shown and being pivotally attached to the inner end portions of each handle 10 at 24. Toggles ].2 are pivotally attached to a respective side frame member 14 at 23.
One handle 10 has an inward extension 22 which is pivotally attached to pusher member 15 at 19. I'here is also shown end cross member or end plate 20 of frame 1.3 which may be moved relative to frame 13 by adjustment screws 18 as is the case with abutment block 17 which has arcuate recess 26 for engagin~ with tapered end surface 16 of the pusher member 15 in the closed position. There is also shown adjustment screws 25 for adjustably mounting toggles 1~.
As shown in FIGS 1-2, the bending tool upon movement of handles 10 from an open position as shown in FIG 2 to a closed position as shown in FIG 1 may bend an elongate member such as metal rod or wire (not shown) wherein the elongate member is interposed between tapered end surface 16 and arcuate recess 26 of abutment block 17.
An elongate member (not shown) may be inserted through opposed gaps 27 in the frame 13 and be retained therein before actuation of pusher member 15 which is moved toward frame 13 as shown by pivoting movement of toggles 12 which in turn is caused by inward movement of handles 10.
In the embodiment shown in FIGS 4-6 there is shown opposed handles lOa, toggle connectors 12a inter-connecting forward extensions 22a of handles lOa to side frame members 14a of support frame 28. Toggle connectors 12a are pivotally attached to each extension 22a at 24a and pivotally attached to each side frame member 14a at 23a. There is also included a shaft 32 having a support member 34 mounted thereon which has lateral ex~ensions or ears 36. Forward extensions 22a of each handle lOa are pivotally mounted to a respective ear 36 at 37.
Shaft 32 is provided with a locknut 33 as shown and also with an adjusting nut 31 which is integral with shaft 32. Shaft 32 is received in a recess or socket 35 of pusher member 15a and may be used to adjust the position o~ pusher member 15a relative to frame 28 so as to provide for different thicknesses of elongate member 40 which may be bent by the bending tool of the invention.
Pusher member 15a is provided with opposed lateral extensions 38 which engage in supporting grooves 39 (shown in dotted outline in FIGS 4-5) in side members 14a.
~ s best shown in FIG 6, frame 28 includes upward extensions 29 of each side frame 14a having abutment surfaces 30. There is provided opposed gaps 27a through which an elongate rod 40 may be inserted before being bent by pusher member 15a. Pusher member 15a has tapered end surface 16a which engages in recess 26a of frame 28 in the closed position. The elonsate member ~0 is interposed between abutment surfaces 30 and pusher member 15a in the open 7~
position as shown in FIG 5 and is bent as shown.
As shown in FIGS 4-6 toggle connectors 12a are pivoted inwardly by inward movement of handles 10 causing longitudinal movement of shaft 32 and pusher member 15a.
It will also be appreciated that instead of inward movement of said handle to cause relative movement between said pusher member and the support frame that in a variation ofthe embodiments described above the relative movement may be caused by outward movement of each handle away from each other.
Claims (5)
1. A bending tool for bending elongate members including:
an elongated support frame;
an abutment block attached to said support frame;
a pusher member movably mounted to the support frame; said member having a working end surface and a mounting end having a mating bore;
a pair of opposed recesses, for positioning a workpiece transversely with respect to said support frame, located on opposite sides of the support frame;
a pair of handles;
linkage means interconnecting each handle to the support frame;
a longitudinal shaft screw threadedly mounted in said mating bore and extending parallel to the length of said support frame whereby said pusher member is adjustably movable by said screw relative to the abutment block;
pivot means interconnecting said shaft screw to each of said handles; and locking means for selectively locking the shaft screw against movement in a selected position in the mating bore of the pusher member;
the construction and arrangement being such that upon movement of said handles toward and away from each other said pusher block moves longitudinally with respect to said support frame relative to the abutment block and when an elongate member is located in said recesses and transversely of the support frame and interposed between the pusher member and the abutment block said longitudinal movement of the pusher member bends said elongate member and upon release of said locking means said pusher member may be adjustably moved on said shaft relative to the abutment block.
an elongated support frame;
an abutment block attached to said support frame;
a pusher member movably mounted to the support frame; said member having a working end surface and a mounting end having a mating bore;
a pair of opposed recesses, for positioning a workpiece transversely with respect to said support frame, located on opposite sides of the support frame;
a pair of handles;
linkage means interconnecting each handle to the support frame;
a longitudinal shaft screw threadedly mounted in said mating bore and extending parallel to the length of said support frame whereby said pusher member is adjustably movable by said screw relative to the abutment block;
pivot means interconnecting said shaft screw to each of said handles; and locking means for selectively locking the shaft screw against movement in a selected position in the mating bore of the pusher member;
the construction and arrangement being such that upon movement of said handles toward and away from each other said pusher block moves longitudinally with respect to said support frame relative to the abutment block and when an elongate member is located in said recesses and transversely of the support frame and interposed between the pusher member and the abutment block said longitudinal movement of the pusher member bends said elongate member and upon release of said locking means said pusher member may be adjustably moved on said shaft relative to the abutment block.
2. A bending tool as claimed in claim 1, wherein the support frame includes a pair of opposed side members and said pusher block is mounted in opposed grooves wherein each groove is located in a respective side member.
3. A bending tool as claimed in claim 1, wherein the pusher member has a leading end proximal to the abutment block of substantially conical or tapered shape which locates in a recess in the abutment block upon actuating movement of said handles.
4. A bending tool as claimed in claim 1, wherein said abutment block is integral with said support frame.
5. A bending tool as claimed in claim 1, wherein said linkage means includes a pair of opposed toggle connectors connecting a respective handle to said support means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000404073A CA1182734A (en) | 1982-05-31 | 1982-05-31 | Bending tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000404073A CA1182734A (en) | 1982-05-31 | 1982-05-31 | Bending tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1182734A true CA1182734A (en) | 1985-02-19 |
Family
ID=4122892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000404073A Expired CA1182734A (en) | 1982-05-31 | 1982-05-31 | Bending tool |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1182734A (en) |
-
1982
- 1982-05-31 CA CA000404073A patent/CA1182734A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |