Separating device
A separating device that includes a wedge that extends between first and second plates, with at least one of the plates being supported by a support device such as a bar. The support device supports the or each plate while the device is in use so that the plate(s) are substantially prevented from bending or twisting due to the forces applied to the plate(s).
1. A separating device having a wedge member movable between first and second plates to separate the plates, and a support device to support at least one plate when the wedge member is moved, wherein the support device contacts a surface of the first plate and wherein the support device and surface of the first plate can slide relative to one another when the wedge is moved.
2. The separating device according to claim 1 , wherein the support device is attached to the wedge member.
3. The separating device according to claim 1 , wherein the support device supports the first plate.
4. The separating device according to claim 1 , wherein the support device comprises a bar.
5. The separating device according to claim 1 , wherein the support device protrudes beyond at least one edge of the first plate.
6. The separating device according to claim 1 , wherein the support device supports the first plate along its length while the wedge member is moving.
7. The separating device according to claim 1 , wherein the support device extends parallel to a sloping face of the wedge member.
8. The separating device according to claim 7 , wherein a face of the support device is co-planar with the sloping face of the wedge member.
9. The separating device according to claim 7 , wherein a longitudinal centre line of the face of the support device is collinear with a longitudinal centre line of the sloping face of the wedge member.
10. The separating device according to claim 7 , wherein at least one of the plates extends across the sloping face of the wedge member and has sidewalls that extend down each side of the wedge member.
11. The separating device according to claim 1 , wherein the device includes a body that supports the first plate and the support device.
12. The separating device according to claim 1 , wherein the device includes a body that supports the first plate and wherein the body includes a slot or groove in which the support device can be located.
13. The separating device according to claim 1 , wherein the first plate is constrained to move in a direction substantially perpendicular to the direction of movement of the wedge member by a first pin and slot arrangement.
14. The separating device according to claim 1 , wherein the device includes a drive mechanism for the wedge member.
15. A separating device according to claim 1 , wherein the support device comprises an extension of the wedge member.
16. A separating device as claimed in claim 1 , wherein the support device extends away from the apex of the wedge member, past the end of the first plate.
17. A separating device having a wedge member movable between first and second plates to separate the plates, and a support device which contacts the surface of at least one plate and supports said at least one plate when the wedge member is moved, wherein at least one of the plates is slidably coupled to the wedge member by a pin and slot arrangement.
18. The separating device according to claim 1 , wherein the second plate remains stationary relative to the body, and the first plate moves relative to the body.
19. A separating device having a wedge member movable between first and second plates to separate the plates, and a support device which contacts the surface of at least one plate and supports said at least one plate when the wedge member is moved, wherein the movement of the at least one plate is guided by a pin and slot arrangement.
20. The separating device according to claim 19 , wherein the pin and slot arrangement comprises one or more pins that locate into an aperture in the support device.
21. The separating device according to claim 19 , wherein first plate has at least one slot and wherein a pin passes through the at least one slot.