Abstract: An arrangement for registering loads includes an elongated transversely flexible element having two end portions and an intermediate portion therebetween. The end portions are rigidly fastened so as to preclude all lateral movement of the end portions. A compressive force is directed lengthwise of the element and towards the center thereof so that the intermediate portion suddenly flexes laterally when this force exceeds a predetermined limit. Strain gauges are mounted on the elongated element. The strain gauges become stressed when the intermediate portion flexes. The strain gauges generate a signal in response to stressing due to the flexing of the intermediate portion.

Abstract: A leaf spring contact with endwise applied actuation movement is provided with a leaf spring body having two ends, at least one contactor located upon the center of said leaf spring body and two inflexible and laterally immovable anchors, each fastened to a different end of said leaf spring body. Means are connected to at least one of said anchors for directing a compressive force through said one anchor towards the center of said leaf spring body and for, consequently, inducing a transgression of bending stress of said leaf spring body which then suddenly bends in a whip-like fashion resulting in switch motion of said leaf spring body.