The slicer works based on a gravity-feed system where the weight of the loaves in the slicer puts pressure on the blades. The feed chute can hold between five and seven identical loaves. They hold the loaves in place to ensure that each one is cut cleanly and precisely.A bakery bread slicer is a machine that cuts a single loaf of bread in perfectly equal slices, and then packages the loaf for convenience and sale. Prior to its invention in the late 1920s, fresh loaves of bread were usually baked at home, taking up a considerable amount of time.