Sheet material dispenser handwheel and cutting knife
First Claim
1. A dispenser for sheet material comprising:
- a wall mountable chassis having means for supporting a roll of flexible sheet material;
a rotatably mounted feed roller on said chassis to guide a web of material from the roll to be grasped by the user;
cutter mechanism operated by rotation of said roller to divide the web into individual sheets;
a manually engagable handwheel mounted to rotate with said feed roller;
finger engagable notches peripherally spaced around the circumference of said handwheel to facilitate manual forward rotation thereof;
means to prevent reverse rotation of said handwheel through a first circumferential portion of each handwheel revolution; and
biasing means connected to urge rotation of said feed roller toward a predetermined rotational position and cause reverse rotation through a second circumferential portion of handwheel revolution so as to move said cutter mechanism to a protected location within said dispenser when said handwheel is free from manual restraint.
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Accused Products
Abstract
A dispenser guides a web from a roll of sheet material over a feed roller to a position to be grasped by the user while roller mounted knife means cuts the web into individual sheets and a manually engagable handwheel, rotatable with the feed roller, provides peripherally spaced finger notches to facilitate manual forward rotation of the roller in dispensing the material. The notches are formed differently in separate circumferential portions of the handwheel such that pawl means, successively engaging the notches incident handwheel rotation, prevents reverse rotation of the feed roller throughout a first portion of each feed roller revolution and biasing means acts to cause reverse rotation throughout a second portion of the feed roller revolution to assure return of the knife means to a safe inaccessible location within the dispenser when the handwheel is released.
30 Citations
7 Claims
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1. A dispenser for sheet material comprising:
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a wall mountable chassis having means for supporting a roll of flexible sheet material; a rotatably mounted feed roller on said chassis to guide a web of material from the roll to be grasped by the user; cutter mechanism operated by rotation of said roller to divide the web into individual sheets; a manually engagable handwheel mounted to rotate with said feed roller; finger engagable notches peripherally spaced around the circumference of said handwheel to facilitate manual forward rotation thereof; means to prevent reverse rotation of said handwheel through a first circumferential portion of each handwheel revolution; and biasing means connected to urge rotation of said feed roller toward a predetermined rotational position and cause reverse rotation through a second circumferential portion of handwheel revolution so as to move said cutter mechanism to a protected location within said dispenser when said handwheel is free from manual restraint. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification