The Stanley Works

Carl Christian Stoutenberg

Edward C Rutty

A retractable knife handle employs a blade carrier mounting a blade for longitudinally moving the blade between retracted sheathed and extended unsheathed positions. A leaf spring extends from the blade carrier to engage an inwardly projecting cam surface so that when the blade carrier is shifted to the extended unsheathed position, the blade is clamped between the blade carrier and case.

Retractable knife handle

A coilable measuring blade for coilable rules has a concavo-convex cross section which has an intermediate portion with a smaller arc and greater height extending through and beyond the normal standout length to provide greater standout length. The blade may also have an outer terminal portion of greater height to require its deflection as it enters the rule casing and thereby provide reduction of the speed with which the blade is being retracted into the casing.

Variable stiffness rule blade, rule employing same, and method of making

A coilable measuring blade for coilable rules has a concavo-convex cross section which has a first portion wherein the length of the arc gradually decreases and the height of the cross section gradually increases to provide greater standout length. The inner or second portion of the blade also has a concavo-convex cross section with a relatively large radius and relatively shallow height. The blade may also have an outer terminal portion of greater height to require its deflection as it enters the rule casing and thereby provide reduction of the speed with which the blade is being retracted into the casing.

A coilable tape rule having a slotted casing and a removable tape blade adapted to be coiled therein. A resiliently mounted, longitudinally slidable arcuate shoe is mounted within the casing to guide the inner end of the measuring tape for coiling on itself to form a plurality of stacked convolutions of generally elliptical shape having its major axis in a direction which is generally perpendicular to the extending portion of the tape blade when the coiling begins. As successive convolutions are formed, the shape of the stacked convolutions will gradually change to a circle and finally change back to an elliptical shape with its major axis parallel to the previously extended tape.

Coilable tape rule

A hand tool providing for helical drive of tool bits is fabricated from a handle providing a coaxial bore with an abutment shoulder at one end, and a guide member having a helical rib along a bore extending therethrough is firmly seated in the open end of the bore. A drive spindle having a cooperating helical thread on its outer surface is slidably seated in the guide member and has its inner end engaged to limit its movement outwardly from the guide member. In the handle bore is provided a compression spring assembly which biases the spindle outwardly of the guide member. The tool is readily assembled by inserting the drive spindle into the guide member and locking it thereon and then driving the partially ribbed guide member into the bore of the handle after the compression spring assembly has been inserted therein.

Hand tool with helical drive

This invention relates to sheet metal files of the type having a large number of discrete cutting edges projecting from the surface of an elongated strip of thin sheet metal forming the base of the file. In such a file, the depth of the cut by each individual cutting edge is very small and accordingly, the pressure on each cutting edge is small and the base of the file need only have sufficient strength and rigidity to support the edge and apply the necessary small cutting pressure. The cutting edges are formed by partially shearing tabs or teeth from the solid strip forming the base and bending them out of the plane of the base at an acute angle. The ends of the teeth are sharpened and hardened to form the discrete cutting edges having the desired rake and clearance angle. The tabs or teeth are generally disposed in parallel rows which extend laterally and non-perpendicularly with respect to the longitudinal axis of the file with the cutting edges in adjacent rows being laterally offset with respect to each other.

Growing community of inventors

Avon, CT, United States of America

Carl Christian Stoutenberg