Roller frame stretcher

• US 8,607,700 B2
• Filed: 03/11/2011
• Issued: 12/17/2013
• Est. Priority Date: 07/13/2006
• Status: Active Grant

• Current Assignee: John O.H. Niswonger
• Original Assignee: John O.H. Niswonger
• Inventors: Niswonger, John O. H.
• Primary Examiner(s): YAN, REN LUO
• Application Number:
  US13/046,429
• Publication Number:
  US 20110155003A1
• Time in Patent Office: 1,012 Days
• Field of Search: 101/114, 101/127.1, 101/129, 381/02, 381/021, 381/022.1, 381/024, 381/029.1
• US Class Current: 101/127.1
• CPC Class Codes: B41F 15/36 flat

Abstract

Mesh may be stretched between rollers of a roller frame using a tool to grip a locking strip slot in the roller at about the middle of the roller and turning the roller using the tool. A rectangular frame may support the roller frame in a planer configuration during stretching. A jack coupled to the rectangular frame may be used to apply rotational force to the tool for rotating the roller. A triangular locking strip may be stitched to the mesh for insertion into the locking strip slot from the top instead of the end of the slot.

Claims

1. A system for stretching a roller frame including a roller and a mesh panel, the system comprising:

a rectangular frame configured to support four corners of the roller frame at four respective corners of the rectangular frame, each side of the rectangular frame including;

a frame member configured to support a roller of the roller frame at opposite ends of the roller;

a torque tool including a body and a handle, the body positioned to grip the roller at an intermediate position about halfway between opposite ends of the roller for rotating the roller, the body of the torque tool further configured to apply torque to the roller at about the center of the roller upon application of a downward force on the handle to rotate the roller for applying tension to the mesh panel; and

a jack attached to the frame member of the rectangular frame at an intermediate position about halfway between two corners of the rectangular frame, a tool bearing surface of the jack configured to be movable in an upward and downward direction and to apply a downward force to the handle of the torque tool to hold the torque tool and roller in position against the tension applied to the mesh panel.

2. The stretching system of claim 1, wherein the rectangular frame further comprises four blocks each disposed at a corner of the rectangular frame, top surfaces of the four blocks being about coplanar for supporting the roller frame at corners of the roller frame in a substantially planar configuration.

3. The stretching system of claim 2, further comprising four pins disposed at four corners of the rectangular frame and configured to hold the roller frame in a stretching position on the rectangular frame on the four blocks.

4. The stretching system of claim 1, wherein the torque tool comprises a grip configured to apply a tangential force to the roller and a bearing surface configured to apply a radial force to the roller.

5. The stretching system of claim 4, wherein a separation between the gripper and the bearing surface is configured to engage the roller at about 90 degrees of separation.

6. The stretching system of claim 4, wherein the jack is an inverted screw jack.

7. The stretching system of claim 1, wherein the mesh panel includes a locking strip stitched to an edge for securing mesh in a locking strip slot of the roller, the locking strip cross section comprising:

a generally triangular shape;

a first edge having a first thickness configured to allow insertion of the first edge into a first side groove of the locking strip slot;

a second edge having a second thickness larger than the first thickness, the second thickness configured to resist insertion of the second edge into a second side groove of the locking strip slot.

8. The stretching system of claim 1 wherein the torque tool comprises:

a gripper configured to engage a slot of the roller and apply a substantially tangential force to the roller;

a bearing surface configured to apply a substantially radial force to a side of the roller;

a body coupled at a first end to the gripper and at a second end to the bearing surface, and

the handle coupled to the body and configured to rotate the torque tool and the roller.

9. The stretching system of claim 8, wherein the gripper engages at least one quarter of a length of the roller slot.

10. The stretching system of claim 8, wherein a separation between the gripper and the bearing surface is configured to engage the roller at a separation around the roller of between about 10 degrees and 170 degrees.

11. The stretching system of claim 8, wherein the gripper of the torque tool is positioned to engage a portion of the slot of the roller including a midpoint between ends of the roller.

12. The stretching system of claim 1, wherein the tool bearing surface of the jack includes a pin that is positioned to apply a force to the handle, the force configured to apply a torque to the roller for holding the roller in position.

13. The stretching system of claim 1, wherein the jack includes a lead screw for moving the tool bearing surface up and down.