Abstract: A tubular female receptacle receives the projecting end of a cylindrical male plug shell having a radial shoulder intermediate of its ends, which bears against the end face of the receptacle. The plug shell carries a tubular coupling ring with cam grooves in its inner surface to act against bayonet pins mounted to the periphery of the receptacle. When the coupling ring is rotated onto the receptacle the cam grooves and bayonet pins cause the coupling ring to advance axially over the receptacle, and because the coupling ring is carried by the plug shell, the coupling ring causes the plug shell to advance into the receptacle. The cam grooves must necessarily end in detents to prevent the bayonet pins from backing down the ramps defined by the grooves.

Abstract: An elongated cylindrical mandrel holds a dummy electrical connector receptacle at one end, and slidably carries a concentric tubular carrier which is biased towards the dummy receptacle. A plurality of circumferentially spaced spindles are hinge mounted at their one end to the carrier for pivoting angularly with respect to the carrier axis and carry cutter wheels on their outboard ends. A slide closer concentrically surrounds the carrier, is axially displaceable, and bears cam surfaces contacting the spindles to cause the spindles to pivot inwardly towards the dummy receptacle. When the mandrel is projected, the receptacle receives in attachment the electrical connector plug bearing the tubular bayonet coupling ring to be severed. A stop limits the pivoting of the spindles and cutter wheels to permit the ring to be severed circumferentially without damage to the plug or its wiring.

Abstract: A device for setting the length of insulation to be stripped from an end of a wire, used in conjunction with wire strippers. The device comprises a stop which limits the extent to which the end of the wire can extend beyond the stripper blades. The position of the stop is infinitely adjustable to provide for varying strip lengths. A graduated measurement scale indicates the distance between the stripper blades and the face of the stop, thereby indicating the strip length. A threaded transporting member is used to move the stop back and forth.

Abstract: Rotary motion is converted to linear motion by multiple thread sets which cooperate to provide precise control of the amount of rotary motion thus converted. As applied to a precision positioning device for a tool, blade or other object, the thread sets are preferably arranged in a serial and/or telescoped configuration. A relatively simple precision hand tool positioning device is realized by having one thread set arranged in a common direction but reduced pitch relative to the other set. The finiteness of the object positioning is further enhanced by moving it with respect to an inclined plane. A retaining device for gripping the element to be moved is directly associated with a shank having the smaller pitched thread set thereon. The shank is prevented from rotating but allowed to move linearly relative to a housing and the threads thereof engage a spindle which has another set of threads for engaging the housing. A calibrated indicator of the shank position in easily readable format is provided.

Abstract: Rotary motion is converted to linear motion by multiple thread sets which cooperate to provide precise control of the amount of rotary motion thus converted. As applied to a precision positioning device for a tool, blade or other object, the thread sets are preferably arranged in a serial and/or telescoped configuration. A relatively simple precision hand tool positioning device is realized by having one thread set arranged in a common direction but reduced pitch relative to the other set. The finiteness of the object positioning is further enhanced by moving it with respect to an inclined plane. A retaining device for gripping the element to be moved is directly associated with a shank having the smaller pitched thread set thereon. The shank is prevented from rotating but allowed to move linearly relative to a housing and the threads thereof engage a spindle which has another set of threads for engaging the housing. A calibrated indicator of the shank position in easily readable format is provided.