CA1146341A - Clamp - Google Patents
ClampInfo
- Publication number
- CA1146341A CA1146341A CA000339562A CA339562A CA1146341A CA 1146341 A CA1146341 A CA 1146341A CA 000339562 A CA000339562 A CA 000339562A CA 339562 A CA339562 A CA 339562A CA 1146341 A CA1146341 A CA 1146341A
- Authority
- CA
- Canada
- Prior art keywords
- jaw
- faces
- sleeve member
- cylindrical
- face
- 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
- Clamps And Clips (AREA)
Abstract
ABSTRACT
A clamp suitable for holding and positioning display panels or the like, having first and second spaced jaw portions, each having a planar jaw face and at the end remote therefrom a part-cylindrical face with its cylindri-cal axis parallel to the plane of the jaw face. A sleeve member is retained between the part-cylindrical faces, The sleeve member has a bore adapted to accept a hinge pin, and a threaded member adjustably connecting the jaw portions, whereby the jaw portions may be moved together and apart to permit the jaw faces to grip the panel or the like therebetween and to permit the part-cylindrical faces to grip the sleeve member.
A clamp suitable for holding and positioning display panels or the like, having first and second spaced jaw portions, each having a planar jaw face and at the end remote therefrom a part-cylindrical face with its cylindri-cal axis parallel to the plane of the jaw face. A sleeve member is retained between the part-cylindrical faces, The sleeve member has a bore adapted to accept a hinge pin, and a threaded member adjustably connecting the jaw portions, whereby the jaw portions may be moved together and apart to permit the jaw faces to grip the panel or the like therebetween and to permit the part-cylindrical faces to grip the sleeve member.
Description
1~463''~
This invention concen~ a new olamp, espeoially suitable for use in the olamping of di~play panels.
It is well known in the fields of displays and exhibitions to position and support large panels on which are mounted artwork, photographs, ~amples etcetera, in a way designed to make maximum impaot on the public. A variety of systems ha~e been designed, including the "3tructural" systems whioh use expensive heavy gauge aluminium extrusions with framed panels, whioh yield a rigid semi-pe~manent display area whioh is perhap3 rather inflexible. Other systems oan be termed "post and panel", in whioh round,or square seotion posts aot as supports for panels whioh are olamped or otherwise fixed thereon. Suoh "post and panel" sy3tem~ are oheaper than the "structuxal" systems and offer a certain amount of greater flexibility in ease of a~sembly and dism~ntlin~ and some systems marketed offsr the ability to position adjaoent panels at ~arying a~gles. ~owe~er, it i9 highly desirable that clamp unit~ should be able to cope with panels of a wide ~ariety - . ~
1~463~1 of different materials and different thicknesses. Some commercial systems endeavour to cope with different panel thicknesses by having gripping inserts with slots of a variety of sizes to receive the panel edges. Such a system is described in British Patent No. 1,320,689. It is thus necessary for each user to stock a number of inserts and it is relatively easy for the inserts to drop out during assembly or dismantling.
The present invention is intended to give a highly flexible clamp system ideally suited to display systems, capable of clamping panels of different thicknesses at continuously variable angles.
The present invention provides a clamp for a panel or the like, having first and second jaw portions in spaced apart relationship, each jaw portion having a planar jaw face and at the end remote therefrom a part-cylindrical face with its cylindrical axis paTallel to the plane of the jaw face, a sleeve member retained between the part-cylindrical faces, which sleeve member has a bore adapted to accept a hinge pin, and a threaded member adjustably connecting the jaw portions whereby the jaw portions may be moved together and apart to permit the jaw faces to grip the panel or the like therebetween and to permit the part-cylindrical faces to grip the sleeve member.
Preferably, the hinge pin and the corresponding bore are not circular, but areelliptical, or provided with faces, e.g. hexagonal or square, since this has been found to prevent slippage between the sleeve member and the pin.
Preferably, the part-circular faces are biased ~341 together, for example by a spring metal clip, to enable them to loosely grip or contact the hinge member.
The invention will now be described with reference to the aocompanying drawins in which:
Fisure 1 is a plan view of one embodiment of a cl~p according to the invention, and Fi~ure 2 i9 a side view in the direction of arrow ~ of the ¢lamp of Figure 1.
~ he clamp ha~ two identical jaw portions 1, 2, conveniently made of aluminium or alloy extrusion, and each jaw portion has a jaw fa¢e 3 and a part-cylindrical fa¢e 4. A bore 5 extends through each jaw portion, intersectins cross-bores 6. ~otatably positioned within each cross bore ar- pins 7a and 7~. Pin 7a has a threaded cross bore and pin 7b has an unthreaded cross bore, enabling bolt ~ to pass throu~h bores 5, throu6h pin 7b and engage pin 7a. Bolt 8 is suitably provided with a head which accepts an allen key.
- Mounted between the part-cylindrical faces 4 is a bobbin-shaped sleeve member 9 conveniently of plastics, e.g. nylon, with a hexagonal bore, arld the part-cylindrical faces are biased against the sleeve member by a spring steel clip 10.
4.
It is desirable that the jaw faces 3 are capable of firmly gripping a smooth-faced panel, and they may be providsd with serrations to act as teeth, but preferably they are provided with fa¢ings 11. The facings ll are suitably of natural or synthetic rubber or plastics material, e.g. plasticised PVC, and may be provided with corr~gations as shown. Conveniently, the facings are retained on the jaw faces by bonding with an adhesive and/or with a mechanical joint such as a dove-tail joint. It is preferred to extend the facings or part of the facings towards the part-cylindrical faces, 30 that they assist in locating the bolt 8 and help Eeep the clamp as a firm unit.
It will be seen that a hexagonal hinge pin can be fitted into the bore in sleeve member 9. Preferably the pin is an interference fit to prevent it falling out during operation as described hereafter. A variety of leDgths of hinge pin may provide special effects in displayin~ panels using the clamps of the invention. A pin of length double that of the bore in the sleeve member will enable two adjacent panels to be joined and hinged to any desired angle, a triple length pin will enable three panels to be clamped and hinged about the common hinge axis, etcetera. When the clamps are positioned towards the bottom of panels, the pin may extend to adjacent the floor or ground and be provided with an internally threaded sleeve into which an adjustable foot may be screwed.
11463~1 In use, a desired unit is assembled, for example from a double length pin and two clamps. The jaw faces of one clamp are piaced on either side of a display panel and the bolt 8 is tightened until the jaw faces firmly hold the panel. Further tightening of bolt 8, acts to clamp part-cylindrical faces 4 onto the sleeve member and rotation of the clamp is prevented. The second clamp is then roughly positioned, a panel clamped into position, then the panel may be mo~ed relative to the other to the final desired position.
Final tightening of the bolt of the second clamp provides a rigidly locked unit.
Although it is the general rule that the jaw faces will grip a panel before it grips the hinge member, if a thin panel is used, - the clamp will grip the hinge member first.
- The clamps of the invention offer a flexibility of angular adjustment never before achieved in commercially marketed units, bounded only by interference of adjacent panels or in fact by aesthetic considerations. Assembly is simple and quick and the clamps are readily re-used.
5ince in the preferred embodiment, pins 7a and 7b do not extend to the ends of the cross-bores 6, each clamp can also serve as a support for accessories which clip into the recesses remaining.
Thus, for example, a spotlight fitting may be clipped into the recesses on one side, while the recesses on the other side may locate a bracket for a shelf unit.
While the clamp of the invention has been described with ,~
1~4f~34~
especial reference to use for display panels, it is to be understood that the in~ention is not limited to such use and may find application in other constructional uses.
This invention concen~ a new olamp, espeoially suitable for use in the olamping of di~play panels.
It is well known in the fields of displays and exhibitions to position and support large panels on which are mounted artwork, photographs, ~amples etcetera, in a way designed to make maximum impaot on the public. A variety of systems ha~e been designed, including the "3tructural" systems whioh use expensive heavy gauge aluminium extrusions with framed panels, whioh yield a rigid semi-pe~manent display area whioh is perhap3 rather inflexible. Other systems oan be termed "post and panel", in whioh round,or square seotion posts aot as supports for panels whioh are olamped or otherwise fixed thereon. Suoh "post and panel" sy3tem~ are oheaper than the "structuxal" systems and offer a certain amount of greater flexibility in ease of a~sembly and dism~ntlin~ and some systems marketed offsr the ability to position adjaoent panels at ~arying a~gles. ~owe~er, it i9 highly desirable that clamp unit~ should be able to cope with panels of a wide ~ariety - . ~
1~463~1 of different materials and different thicknesses. Some commercial systems endeavour to cope with different panel thicknesses by having gripping inserts with slots of a variety of sizes to receive the panel edges. Such a system is described in British Patent No. 1,320,689. It is thus necessary for each user to stock a number of inserts and it is relatively easy for the inserts to drop out during assembly or dismantling.
The present invention is intended to give a highly flexible clamp system ideally suited to display systems, capable of clamping panels of different thicknesses at continuously variable angles.
The present invention provides a clamp for a panel or the like, having first and second jaw portions in spaced apart relationship, each jaw portion having a planar jaw face and at the end remote therefrom a part-cylindrical face with its cylindrical axis paTallel to the plane of the jaw face, a sleeve member retained between the part-cylindrical faces, which sleeve member has a bore adapted to accept a hinge pin, and a threaded member adjustably connecting the jaw portions whereby the jaw portions may be moved together and apart to permit the jaw faces to grip the panel or the like therebetween and to permit the part-cylindrical faces to grip the sleeve member.
Preferably, the hinge pin and the corresponding bore are not circular, but areelliptical, or provided with faces, e.g. hexagonal or square, since this has been found to prevent slippage between the sleeve member and the pin.
Preferably, the part-circular faces are biased ~341 together, for example by a spring metal clip, to enable them to loosely grip or contact the hinge member.
The invention will now be described with reference to the aocompanying drawins in which:
Fisure 1 is a plan view of one embodiment of a cl~p according to the invention, and Fi~ure 2 i9 a side view in the direction of arrow ~ of the ¢lamp of Figure 1.
~ he clamp ha~ two identical jaw portions 1, 2, conveniently made of aluminium or alloy extrusion, and each jaw portion has a jaw fa¢e 3 and a part-cylindrical fa¢e 4. A bore 5 extends through each jaw portion, intersectins cross-bores 6. ~otatably positioned within each cross bore ar- pins 7a and 7~. Pin 7a has a threaded cross bore and pin 7b has an unthreaded cross bore, enabling bolt ~ to pass throu~h bores 5, throu6h pin 7b and engage pin 7a. Bolt 8 is suitably provided with a head which accepts an allen key.
- Mounted between the part-cylindrical faces 4 is a bobbin-shaped sleeve member 9 conveniently of plastics, e.g. nylon, with a hexagonal bore, arld the part-cylindrical faces are biased against the sleeve member by a spring steel clip 10.
4.
It is desirable that the jaw faces 3 are capable of firmly gripping a smooth-faced panel, and they may be providsd with serrations to act as teeth, but preferably they are provided with fa¢ings 11. The facings ll are suitably of natural or synthetic rubber or plastics material, e.g. plasticised PVC, and may be provided with corr~gations as shown. Conveniently, the facings are retained on the jaw faces by bonding with an adhesive and/or with a mechanical joint such as a dove-tail joint. It is preferred to extend the facings or part of the facings towards the part-cylindrical faces, 30 that they assist in locating the bolt 8 and help Eeep the clamp as a firm unit.
It will be seen that a hexagonal hinge pin can be fitted into the bore in sleeve member 9. Preferably the pin is an interference fit to prevent it falling out during operation as described hereafter. A variety of leDgths of hinge pin may provide special effects in displayin~ panels using the clamps of the invention. A pin of length double that of the bore in the sleeve member will enable two adjacent panels to be joined and hinged to any desired angle, a triple length pin will enable three panels to be clamped and hinged about the common hinge axis, etcetera. When the clamps are positioned towards the bottom of panels, the pin may extend to adjacent the floor or ground and be provided with an internally threaded sleeve into which an adjustable foot may be screwed.
11463~1 In use, a desired unit is assembled, for example from a double length pin and two clamps. The jaw faces of one clamp are piaced on either side of a display panel and the bolt 8 is tightened until the jaw faces firmly hold the panel. Further tightening of bolt 8, acts to clamp part-cylindrical faces 4 onto the sleeve member and rotation of the clamp is prevented. The second clamp is then roughly positioned, a panel clamped into position, then the panel may be mo~ed relative to the other to the final desired position.
Final tightening of the bolt of the second clamp provides a rigidly locked unit.
Although it is the general rule that the jaw faces will grip a panel before it grips the hinge member, if a thin panel is used, - the clamp will grip the hinge member first.
- The clamps of the invention offer a flexibility of angular adjustment never before achieved in commercially marketed units, bounded only by interference of adjacent panels or in fact by aesthetic considerations. Assembly is simple and quick and the clamps are readily re-used.
5ince in the preferred embodiment, pins 7a and 7b do not extend to the ends of the cross-bores 6, each clamp can also serve as a support for accessories which clip into the recesses remaining.
Thus, for example, a spotlight fitting may be clipped into the recesses on one side, while the recesses on the other side may locate a bracket for a shelf unit.
While the clamp of the invention has been described with ,~
1~4f~34~
especial reference to use for display panels, it is to be understood that the in~ention is not limited to such use and may find application in other constructional uses.
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A clamp for a panel or the like, having first and second jaw portions in spaced apart relationship, each jaw portion having a planar jaw face and at the end remote therefrom a part-cylindrical face with its cylindrical axis parallel to the plane of the jaw face, a sleeve member retained between the part-cylindrical faces, which sleeve member has a bore adapted to accept a hinge pin, and a threaded member adjustably connecting the jaw portions whereby the jaw portions may be moved together and apart to permit the jaw faces to grip the panel or the like therebetween and to permit the part-cylindrical faces to grip the sleeve member,
2. A clamp according to claim 1, wherein the bore in the sleeve member is elliptical or provided with faces.
3. A clamp according to claim 1 or 2, wherein the part-cylindrical faces are biased together.
4. A clamp according to claim 1, comprising also a hinge pin which is an interference fit in the bore.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000339562A CA1146341A (en) | 1979-11-09 | 1979-11-09 | Clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000339562A CA1146341A (en) | 1979-11-09 | 1979-11-09 | Clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1146341A true CA1146341A (en) | 1983-05-17 |
Family
ID=4115581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000339562A Expired CA1146341A (en) | 1979-11-09 | 1979-11-09 | Clamp |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1146341A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5175913A (en) * | 1991-06-28 | 1993-01-05 | Mackie Wayne H | Connector for use in connecting planar objects |
-
1979
- 1979-11-09 CA CA000339562A patent/CA1146341A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5175913A (en) * | 1991-06-28 | 1993-01-05 | Mackie Wayne H | Connector for use in connecting planar objects |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |