Apparatus and methods for removing margin portions from perforated flexible sheet materials
OwnerRay Loescheinventor
Life of this patent
Estimating the term…
Abstract
Methods and apparatuses for tearing computer printer paper margin pieces from the main part of the paper sheet. The apparatuses include base and operative members having opposing jaws which are controllably movable between open and grasping positions. The jaws are formed with inwardly converging lips which guide the paper stacks into place. A backstop is provided to align the paper with respect to the jaws. An end stop can also be provided. Biasing is provided to open the jaws and a separation limiting structure is used to automatically stop the jaw opening at a predetermined limit. Arched jaw faces are shown for improved gripping of the sheets.
Claims45
An apparatus for holding margin portions of paper or other flexible sheet material which have been previously perforated, scored or otherwise prepared for separation from a main part of the sheet material, the apparatus comprising:
- a base member having a first elongated jaw extending longitudinally along the base member for receiving margin portions of prepared sheet material adjacent thereto;
- an operative member connected to the base member and having a second elongated jaw extending longitudinally along the operative member in opposing relationship relative to the first elongated jaw, the operative and base members including means for enabling the first and second elongated jaws to be controllably moved between open positions and engaging positions for grasping margin portions of prepared sheet material therebetween;
- said first and second elongated jaws each including a contacting jaw face, and a lip portion extending outwardly relative to each jaw face for contacting and guiding sheet material into position between the jaws;
- backstop means extending longitudinally along at least a portion of one of said members adjacent at least one of said elongated jaws for stopping and aligning margin portions of prepared sheet material between the first and second elongated jaws for grasping thereby;
- and
- separation limiting means for limiting separation between the first and second elongated jaws to a predetermined separation height in a fully open position.
A method of removing margin portions from paper or other prepared flexible sheet material which have been previously perforated, scored, or otherwise prepared for separation from a main part of the sheet material, the method comprising:
- guiding a margin portion of sheet material between converging lip portions of a pair of elongate opposing jaws;
- positioning the margin portion of the sheet material against a backstop for aligning said margin portions between the pair of elongate opposing jaws having jaw faces extending along said margin portion;
- grasping said margin portion with the pair of jaws substantially along the length of said margin portion, the outside edges of the jaw faces engaging along a line of contact, the jaw faces being positioned such that the line of contact engages the margin portion intermediate between perforations or other preparations for separation and an outer edge;
- and
- tearing said main part of the sheet material from said margin portion while the margin portion is grasped by said jaws.
An apparatus for holding margin portions of paper or other flexible sheet material which have been previously perforated, scored or otherwise prepared for separation from a main part of the sheet material, the apparatus comprising:
- a base member having a first elongated jaw extending longitudinally along the base member for receiving margin portions of prepared sheet material adjacent thereto;
- an operative member connected to the base member and having a second elongated jaw extending longitudinally along the operative member in opposing relationship relative to the first elongated jaw, the operative and base members including means enabling the first and second elongated jaws to be brought into opposed engaging relationship for grasping margin portions of prepared sheet material therebetween;
- backstop means extending longitudinally along at least a portion of one of said members adjacent the respective first or second elongated jaw for stopping and aligning a margin portion of prepared sheet material between the first and second elongated jaws for grasping thereby;
- and
- each jaw including a contacting jaw face, and a lip portion extending outwardly relative to each jaw face for contacting the sheet material to guide it into position between the jaws.
An apparatus for holding margin portions of paper or other flexible sheet material which have been previously perforated, scored or otherwise prepared for separation from a main part of the sheet material, the apparatus comprising:
- a base member having a first elongated jaw extending longitudinally along the base member for receiving margin portions of prepared sheet material adjacent thereto;
- an operative member connected to the base member and having a second elongated jaw extending longitudinally along the operative member in opposing relationship relative to the first elongated jaw, the operative and base members including means enabling the first and second elongated jaws to be brought into opposed engaging relationship for grasping margin portions of prepared sheet material therebetween;
- said jaws including outwardly extending lip portions which converge inwardly for contacting and guiding the sheet material into position between the jaws;
- backstop means extending longitudinally along at least a portion of one of said members adjacent the respective first or second elongated jaw for stopping and aligning a margin portion of prepared sheet material between the first and second elongated jaws for grasping thereby;
- and
- at least one of the first and second jaws being longitudinally arched relative to the other jaw.
An apparatus for holding margin portions of paper or other flexible sheet material which have been previously perforated, scored or otherwise prepared for separation from a main part of the sheet material, the apparatus comprising:
- a base member having a first elongated jaw extending longitudinally along the base member for receiving margin portions of prepared sheet material adjacent thereto;
- an operative member connected to the base member and having a second elongated jaw extending longitudinally along the operative member in opposing relationship relative to the first elongated jaw;
- each of said jaws including a contacting jaw face having an outer edge;
- said first and second elongated jaws each including a contacting jaw face, and a lip portion extending outwardly relative to each jaw face for contacting and guiding sheet material into position between the jaws;
- the operative and base members including means enabling the first and second elongated jaws to be brought into opposed engaging relationship along said outer edges along approximately a line of contact for grasping margins of prepared sheet material therebetween;
- and
- backstop means extending longitudinally along at least a portion of one of said members adjacent the respective first or second elongated jaw for stopping and aligning a margin piece of prepared sheet material between the first and second elongated jaws for grasping thereby.
An apparatus for holding margin portions of paper or other flexible sheet material which have been previously perforated, scored or otherwise prepared for separation from a main part of the sheet material, the apparatus comprising:
- a base member having a first elongated jaw extending longitudinally along the base member for receiving margin portions of prepared sheet material adjacent thereto;
- an operative member connected to the base member and having a second elongated jaw extending longitudinally along the operative member in opposing relationship relative to the first elongated jaw, the operative and base members including means for enabling the first and second elongated jaws to be controllably moved between the open positions and engaging positions for grasping margin portions of prepared sheet material therebetween;
- said first and second elongated jaws each including a contacting jaw face, and a lip portion extending outwardly relative to each jaw face for contacting and guiding sheet material into position between the jaws;
- backstop means extending longitudinally along at least a portion of one of said members adjacent at least one of said elongated jaws for stopping and aligning margin portions of prepared sheet material between the first and second elongated jaws for grasping thereby;
- and
- biasing means for biasing the jaws into an open position.
Dependencies are inferred from the claim text.