Geometrical instruments – Straightedge type – Square and sliding nonpivotal straightedge
Reexamination Certificate
2005-06-14
2005-06-14
Fulton, Christopher W. (Department: 2859)
Geometrical instruments
Straightedge type
Square and sliding nonpivotal straightedge
C033S427000, C033S480000, C033S672000
Reexamination Certificate
active
06904689
ABSTRACT:
A guide device for cutting lap joints includes a frame and a rectilinear guide member, the frame having a Y-like shape and consisting of a removable top portion and a bottom portion forming a yoke therebetween at the upper portion of the Y-like frame. The lower portion of the Y-like frame has a guide portion and one side of the guide portion extends to be co-linear with one side of the yoke portion forming a first adjustable guide surface. The guide portion is provided with a guide way running longitudinally along the guide portion with a movable stopper provided so as to move along the guide surface as guided by the guide way. The movable stopper has a lockable member for locking the movable stopper in any desired position along said guide surface. The other side of the guide portion opposite to the guide surface forms an angle of 45 degrees with another contiguous side of the yoke portion and a fixed stopper is formed near the junction of the yoke portion and this other side of the guide portion. The rectilinear guide member is removably inserted within the yoke, extending perpendicular to the adjustable guide surface, a bottom edge thereof forming a 45 degree angle with said fixed stopper.
REFERENCES:
patent: 229283 (1880-06-01), Starrett
patent: 249821 (1881-11-01), Bellows
patent: 738422 (1903-09-01), Duffy
patent: 1188018 (1916-06-01), Soisson
patent: 4380872 (1983-04-01), Moran
Courson Tania
Fulton Christopher W.
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