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US 4,228,592 AGranted
Measuring tool especially for carpenters
OwnerHarold J. Badgerinventor
Life of this patent
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OwnerHarold J. Badgerinventor
Estimating the term…
The present measuring tool facilitates the work of a carpenter, especially panelling work by a direct measuring and reading of the position of cut-outs that are to be made in any type of panel, for example to accommodate utility outlets and other openings. For this purpose a runner or slider is movable along a T-square. A readout window is provided in one face of the runner to directly read the runner position from the scale marking on the T-square. The runner or slider simultaneously has a hole therethrough which forms a template, for example, for standard electrical outlet boxes. Thus, the carpenter may directly work on the panel a hole to be cut into the panel without even memorizing the measurements. A set screw or the like may be used to lock the runner on the leg of the T-square once the runner or slider has been properly positioned on the T-square leg whereby the locked position of the runner acts as a memory for the reading.
A runner for a T-square, comprising guide channel means for the T-square, readout window means in said runner for reading a scale on said T-square, and aperture means extending through said runner, said aperture means being located in said runner so as to form marking template means, said aperture means being bounded by straight edges, said guide channel means having longitudinal channel defining walls at least one of which coincides with one of said straight edges bounding said aperture means, whereby said at least one channel defining wall forms a tangent relative to any marking made directly through said aperture means.
A measuring tool especially for carpenters, comprising T-square means having a leg with a scale thereon and a squaring bar secured at right angles to one end of said leg, runner means, guide channel means extending through said runner means, said T-square leg fitting movably into said guide channel means whereby the runner is adjustable in its position along the length of the T-square leg, readout window means in at least one side face of said runner means for reading a scale on said T-square leg, and aperture means extending through said runner means, said aperture means being positioned in said runner means to form a marking template for marking a location on a piece of material, said aperture means being bounded by straight edges, said guide channel means having longitudinal channel defining walls at least one of which coincides with one of said straight edges bounding said aperture means, whereby said at least one channel defining wall forms a tangent relative to any marking made directly through said aperture means.
Dependencies are inferred from the claim text.