Abstract: A linear burner has a tubular casing with an elongated opening having inwardly sloping sides. A threaded stainless steel rod is disposed across the opening such that the threads contact the opening sides to support the rod. A series of gas flow passages are formed between the opening sides and the rod threads.

Abstract: A dough sheet spreader through which dough is extruded in sheets of predetermined width and thickness. A multi-part housing having a downwardly distending, outwardly flaring passageway terminating in an egress, the lips of which are lined with dough release members, is adapted to receive and extrude dough-like material. Provision may be made for degassing the dough during the extrusion process. In one embodiment the thickness of the dough sheet can be varied and in another, both the width and thickness can be varied in progressive, finite steps.