Bench top board scoring device

Patent metadata

Field	Value
Publication number	US-10124503-B2
Application number	US-201715419476-A
Country	US
Kind code	B2
Filing date	Jan 30, 2017
Priority date	Jan 30, 2017
Publication date	Nov 13, 2018
Grant date	Nov 13, 2018

Abstract

A bench top board scoring device is provided, having a frame having a first end and an opposite second end, a work area defined between the first and second ends, each end having at least one leg configured for contacting a substrate. A track is connected to the frame and extends between the first end and the second end, a carriage is slidably mounted to the track for travel between the first end and the second end, and an arm has an upper surface, a pivot end pivotally connected to the carriage, and an opposite knife mount end. A knife blade is mounted to the knife mount end. Additionally, the present device is constructed and arranged so that as the carriage is moved from the first end to the second end, wallboard samples placed in the work area and contacted by the knife blade receive a constant scoring force.

First claim

The invention claimed is:

1. A bench top board scoring device, comprising:
a frame having a first end and an opposite second end, a work area defined between said first and second ends, each end having at least one leg configured for contacting a substrate;
a track connected to said frame and extending between said first end and said second end;
a carriage slidably mounted to said track for travel between said first end and said second end;
an arm having an upper surface, a pivot end pivotally connected to said carriage, and an opposite knife mount end;
a knife blade mounted to said knife mount end;
a power transmission element connected to said carriage for achieving user-powered pulling movement of said carriage along said track, said arm pivoting along an axis transverse to a direction of said movement of said carriage along said track; and
a weight post associated with, and projecting from said arm, and constructed and arranged for receiving weights for exerting a force on said arm.

2. The bench top scoring device of claim 1 , wherein said weight post projects generally vertically from said upper surface of said arm.

3. The bench top scoring device of claim 2 , wherein said weight post projects normally from said upper surface of said arm.

4. The bench top scoring device of claim 1 , wherein said weight post is located on said arm closer to said knife mount end than to said pivot end.

5. The bench top scoring device of claim 1 , wherein said track is a pair of parallel rods, each rod extending between legs associated with said first and second ends.

6. The bench top scoring device of claim 5 , wherein said carriage has a pair of generally cylindrical, linear bearings, each configured for slidably engaging an associated one of said rods.

7. The bench top scoring device of claim 1 , wherein said knife blade is removably secured to said knife mount end of said arm using a user activated locking plate removable without tools.

8. The bench top scoring device of claim 1 , further including a zero lash bearing on said carriage constructed and arranged for receiving said pivot end of said arm and retaining same to prevent lateral displacement while pivoting.

9. The bench top scoring device of claim 1 , wherein said power transmission element is a pull chain and said frame includes a support bracket for said chain at at least one of said first and second ends.

10. A bench top board scoring device, comprising:
a frame having a first end and an opposite second end, a work area defined between said first and second ends, each end having at least one leg configured for contacting a substrate;
a track connected to said frame and extending between said first end and said second end;
a carriage slidably mounted to said track for travel between said first end and said second end;
an arm having an upper surface, a pivot end pivotally connected to said carriage, and an opposite knife mount end, said arm connected to said carriage only at said pivot end;
a knife blade mounted to said knife mount end;
a weight post associated with, and projecting from said arm, having a free end constructed and arranged for receiving weights for exerting a force on said arm; and
a power transmission element connected to said carriage for achieving user-powered pulling movement of said carriage along said track.

11. The bench top scoring device of claim 10 , wherein said weight post projects generally normally from said upper surface of said arm.

12. The bench top scoring device of claim 10 , wherein said weight post is located on said arm closer to said knife mount end than to said pivot end.

13. The bench top scoring device of claim 10 , wherein said power transmission element is a pull chain and said frame includes a support bracket for said chain at at least one of said first and second ends.

14. The bench top scoring device of claim 10 , wherein said track is a pair of parallel rods, each rod extending between legs associated with said first and second ends, and said carriage has a pair of generally cylindrical, linear bearings, each configured for slidably engaging an associated one of said rods.

15. The bench top scoring device of claim 10 , further including a zero lash bearing on said carriage constructed and arranged for receiving said pivot end of said arm and retaining same to prevent lateral displacement while pivoting.

16. A bench top board scoring device, comprising:
a frame having a first end and an opposite second end, a work area defined between said first and second ends, each end having at least one leg configured for contacting a substrate;
a track connected to said frame and extending between said first end and said second end, said track is a pair of parallel rods, each rod extending between legs associated with said first and second ends;
a carriage slidably mounted to said track for travel between said first end and said second end, said carriage has a pair of generally cylindrical, linear bearings, each configured for slidably surrounding and engaging an associated one of said rods;
an arm having an upper surface, a pivot end pivotally connected to said carriage, and an opposite knife mount end;
a knife blade mounted to said knife mount end;
a power transmission element connected to said carriage for achieving user-powered pulling movement of said carriage along said track; and
a weight post associated with, and projecting from said arm, and constructed and arranged for receiving weights for exerting a force on said arm.

17. The bench top scoring device of claim 16 , wherein said power transmission element is a pull chain and said frame includes a support bracket for said chain at at least one of said first and second ends.

Assignees

• United States Gypsum Co

Inventors

• Rago William J
• Cochran Charles W

Classifications

• B26D3/085 Primary

  On sheet material · CPC title

• B26D1/04

  having a linearly-movable cutting member (B26D1/46, B26D1/547 take precedence) · CPC title

• G01N3/08

  by applying steady tensile or compressive forces (G01N3/28 takes precedence) · CPC title

• B26D7/2614

  Means for mounting the cutting member · CPC title

• G01N2203/0012

  Constant speed test · CPC title