24 in use the blade assembly behaves in much the same manner as blade assemblies of the type fixedly and immovably connected to their handles until a particular force level is exerted on the razor when the blade assembly is urged by the operator against the surface being shaved with sufficient force to overcome the bias of the spring 72 the bar 66 and the tongues 68 with it moves in the neck portion 44 towards the grip portion 42 permitting the blade assembly first portion 22 to pivot about the frame portion 54 of the handle the blade assembly second portion 24 however is fixedly connected to the tongues 68 and therefore moves with the tongues causing pivotal movement between the first and second portions of the blade assembly such movement between the first and second portions of the blade assembly has the effect of relatively withdrawing the first blade rearwardly behind a plane p extending from the cutting edge of the second blade to a guard portion tangent point and further of decreasing the angle a formed by a first line b extending through the plane of the first blade 12 and a second line c extending from the cutting edge of the first blade to a tangent point on the guard portion thus as excess pressure is applied by the operator the 34 exposure 34 of the blades is decreased and the 34 blade tangent angle 34 is decreased 34 exposure 34 and 34 blade tangent angle 34 are defined and discussed in u s pat no 3 786 563 issued jan 22 1974.