Web material dispenser and method

1. A web material dispenser comprising:

a housing for housing first and a second rolls of web material, the housing comprising an opening for dispensing the web material;

a roll support assembly provided in the housing, the roll support assembly comprising:

a linkage arm provided with first and second attachment locations, the linkage arm being pivotally attached to the housing at the first attachment location;

a roll support arm having first and second ends, the roll support arm being pivotally attached to the linkage arm at the second attachment location of the linkage arm;

a first mandrel provided at the first end of the roll support arm for supporting the first roll of web material; and

a second mandrel provided at the second end of the roll support arm for supporting the second roll of web material;

wherein the roll support arm is selectively configurable in a first roll support dispensing position wherein the first mandrel is located below the second mandrel and a second roll support dispensing position wherein the second mandrel is located below the first mandrel, and

the configuration of the roll support arm between the first and the second roll support dispensing positions is modified by pivoting the linkage arm relative to the housing and by pivoting the roll support arm relative to the linkage arm.

2. The web material dispenser of claim 1 , wherein the linkage arm is pivotally attached to the housing at a fixed location of the housing; and

wherein the first and second attachment locations of the linkage arm are spaced apart and remote from one another.

3. The web material dispenser of claim 2 , wherein the linkage arm comprises a first end and a second end, opposed to the first end, the first attachment location being on the first end and the second attachment location being on the second end.

4. The web material dispenser of claim 1 , wherein the housing comprises a back-wall member defining a backing plane;

wherein the linkage arm extends forwardly from the backing plane;

wherein in a linkage arm dispensing position, the linkage arm forms a first angle with the backing plane; and

wherein in a linkage arm roll changing position, the linkage arm forms a second angle with the backing plane, the second angle being greater than the first angle.

5. The web material dispenser of claim 4 , wherein the second attachment location of the linkage arm is a fixed location on the linkage arm;

wherein the first attachment location of the linkage arm defines a pivot axis of the linkage arm, representing a first pivot axis, parallel to the backing plane, the linkage arm being rotatable about the first pivot axis relative to the housing; and

wherein the second attachment location of the linkage arm defines a pivot axis of the roll support arm, representing a second pivot axis, the second pivot axis being parallel to the first pivot axis, the roll support arm being rotatable about the second pivot axis relative to the linkage arm.

6. The web material dispenser of claim 5 , wherein when the dispenser is in use, the pivot axis of the linkage arm is located above the pivot axis of the roll support arm.

7. The web material dispenser of claim 5 , wherein the pivot axis of the roll support arm is located between the first and second ends of the roll support arm.

8. The web material dispenser of claim 1 , wherein the roll support arm is operable to pivot about the second attachment location of the linkage arm between at least one support arm roll changing position and at least one support arm dispensing position;

wherein in the at least one support arm dispensing position of the roll support arm, one of the mandrels is located above the other of the mandrels.

9. The web material dispenser of claim 8 , wherein:

in the at least one support arm dispensing position, the roll support arm extends substantially vertically relative to the ground; and

in the at least one support arm roll-changing position, the roll support arm extends substantially horizontally relative to the ground.

10. The web material dispenser of claim 8 , wherein the first and second mandrels are maintained at a fixed position relative to one another and relative to the housing when the roll support arm is in the at least one support arm dispensing position for dispensing material.

11. The web material dispenser of claim 8 , wherein the roll support assembly further comprises a retaining mechanism operable to selectively retain the roll support arm in the at least one support arm dispensing position thereof or in the at least one support arm roll changing position thereof.

12. The web material dispenser of claim 1 , wherein:

the first and second mandrels extend from the first end and from the second end of the roll support arm, respectively; and

the first and second mandrels comprising first and second extending ends, respectively, said first and second extending ends being open.

13. The web material dispenser of claim 4 , wherein:

the housing comprises the back-wall member and a cover member having an opening, the cover member further being movable between a closed position and an open position;

in the closed position of the cover member, the first and second mandrels are partially enclosed within the housing; and

in the open position of the cover member, the linkage arm and the roll support arm can both be pivoted to replace the first or second rolls of web material when depleted and/or to switch positions of the first and second rolls of web material relative to the opening.

14. The web material dispenser of claim 13 , wherein:

in the closed position and upon the first roll of web material being supported on the first mandrel and the second roll of web material being supported on the second mandrel, at least a portion of each of the first roll of web material and the second roll of web material is accessible through the opening of the cover member.

15. The web material dispenser of claim 4 , further comprising:

an interfacing member extending forwardly from the back-wall member, the linkage arm being pivotally attached to the interfacing member;

wherein the interfacing member is coupled to one of a left side and a right side of the housing.

16. The web material dispenser of claim 15 , wherein the interfacing member comprises an arcuate guiding mechanism operable to guide pivotal movement of the linkage arm relative to the housing, the arcuate guiding mechanism of the interfacing member providing an arc-shaped path; and

wherein the linkage arm comprises a follower element operatively engaging the arcuate guiding mechanism along the arc-shaped path.

17. A web material dispenser comprising:

a housing comprising a back-wall member and a cover member having an opening, the cover member further being movable between a closed position and an open position;

a roll support assembly coupled to the housing and having a roll support arm, the roll support arm having a first end and a second end, opposite the first end, the roll support arm being pivotable within the housing between at least one support arm roll changing position and at least one support arm dispensing position;

a first mandrel extending from the first end of the roll support arm, to support a roll of web material, an extending end of the first mandrel being open; and

a second mandrel extending from the second end of the roll support arm, to support a second roll of web material, an extending end of the second mandrel being open; and

wherein in the open position of the cover member, pivoting of the roll support arm simultaneously modifies positions of the first and second rolls of web material relative to the opening, to change one or more of the rolls of web material supported on the mandrels.

18. The web material dispenser of claim 17 , wherein in the closed position of the cover member and upon the first roll of web material being supported on the first mandrel and the second roll of web material being supported on the second mandrel, at least a portion of each of the web material of the first and second rolls is accessible through the opening of the cover member.

19. The web material dispenser of claim 17 , wherein in the dispensing position of the roll support arm, one of the first and second mandrels is located above the other one of the first and second mandrels; and

wherein in the roll-changing position of the roll support arm, one of the first and second mandrels is located forwardly of the other of the mandrels, relative to the back-wall member.

20. The web material dispenser of claim 19 , wherein when the dispenser is in use:

in the dispensing position, the roll support arm extends substantially vertically relative to the ground; and

in the roll-changing position, the roll support arm extends substantially horizontally relative to the ground.

21. The web material dispenser of claim 17 , wherein the roll support assembly further comprises a retaining mechanism operable to retain the roll support arm in the at least one dispensing position thereof.

22. A method of switching positions of rolls in a web material dispenser, the web material dispenser comprising a housing for housing first and second rolls of web material, the method comprising:

providing a roll support assembly pivotally attached to the housing, the roll support assembly comprising:

a roll support arm having first and second ends,

a first mandrel provided at the first end of the roll support arm and for supporting the first roll of web material; and

a second mandrel provided at the second end of the roll support arm for supporting the second roll of web material;

pivoting the roll support assembly away from a back-wall member of the housing, to provide clearance for the roll support arm to pivot;

rotating the roll support arm about a pivot axis thereof, to move forwardly the second mandrel supporting the second roll of web material and,

simultaneously move rearwardly the first mandrel supporting the first roll of web material; and

pivoting the roll support assembly toward the back-wall member.

23. The method of claim 22 , wherein the second mandrel is initially in a primary dispensing position and the first mandrel is initially in a secondary dispensing position; and

wherein subsequent to rotating the roll support arm, the second mandrel reaches the secondary dispensing position and the first mandrel reaches the primary dispensing position.

24. The method of claim 23 , wherein subsequent to rotating the roll support arm, the new roll of web material supported on the second mandrel is in the secondary dispensing position and the first roll of web material, being non-depleted, supported on first mandrel is in the primary dispensing position.

25. The method of claim 23 , wherein the primary dispensing position is located below the secondary dispensing position relative to the ground.

26. The method of claim 22 , wherein the housing comprises a cover member having an opening;

wherein during dispensing of web material, the cover member is closed against the back-wall member, the first and second rolls of web material supported on the first and second mandrels are partially enclosed within the housing, and at least a portion of each of the first roll of web material and the second roll of web material is accessible through the opening of the cover member; and

wherein providing the new roll of web material onto the second mandrel comprises:

opening the cover member from the back-wall member prior to pivoting of the roll support assembly and rotating the roll support arm; and

closing the cover member against the back-wall member after rotating the roll support arm and after providing the new roll of web material.

27. The method of claim 22 , wherein the housing comprises a cover member having an opening;

wherein during dispensing of web material, the cover member is closed against the back-wall member, the first and second rolls of web material supported on the first and second mandrels are partially enclosed within the housing, and at least a portion of each of the first roll of web material and the second roll of web material is accessible through the opening of the cover member, a smaller portion of the roll of web material in the secondary dispensing position being accessible through the opening than the roll of web material in the primary dispensing position; and

wherein providing the new roll of web material in place of the depleted roll comprises:

opening the cover member from the back-wall member prior to rotating the roll support arm; and

closing the cover member against the back-wall member after rotating the roll support arm and after placing the new roll of web material.

28. The method of claim 26 , further comprising maintaining the roll support arm in a dispensing position thereof while the cover member is closed against the back-wall member, the roll support arm extending substantially vertically relative to the ground when in its dispensing position.

29. The method of claim 22 , wherein providing the new roll of web material onto the second mandrel comprises inserting the new roll of web material onto the second mandrel in a sideways direction via an open side of the second mandrel.

30. The method of claim 22 , wherein, when the roll support assembly is pivoted away from a back-wall member of the housing, the method further comprises providing a new roll of web material onto the second mandrel.