Abstract: The heat exchanger according to the invention consists of two flat or slightly incurved parallel surfaces formed in two sheets of metal (2) and (3). The longitudinal edge pieces (8) and (9) and transverse edge pieces (12) and (13) have rounded edges. The entire exterior surface is coated with enamel. These exchangers may be used in groups of several parallel units arranged inside a tubular body, or they may be disposed in a radiating pattern inside a cylindrical tank in a chemical reactor, forming a complex exchanger. This invention is of interest to manufacturers of industrial heat exchangers, particularly exchangers designed for the chemcial, pharmaceutical or agricultural/food industries.

Abstract: An arrangement for handling and guiding a bundle of sheets in and between stacking and binding stations in which the sheets are stacked and bound respectively. The arrangement includes an arm displaceable from a pressing position in which the arm engages an uppermost sheet in the bundle in the stacking station to form a pressed bundle, to a removed position in which the arm is disengaged from the uppermost sheet. The pressed bundle is moved through the stacking station and conveyed from the stacking station to the binding station while the arm is maintained in the pressing position to prevent sheet disarrangement during such passage. In the binding station, the arm is displaced to the removed position to form a released bundle which is compressed prior to binding in the binding station. A guard engages uppermost sheets in the bundle in the binding station during displacement of the arm to the removed position to prevent sheet disarrangement.

Abstract: A vertical signature stacker comprises a separator plate supported within a stacker framework for removal of signatures from a conveyor belt and delivery thereof to a fork. The separator plate is supported by a slide frame that may be tilted and vertically adjusted. The separator plate is also adjustable in a horizontal direction. The fork receives signature stacks and is vertically adjustable. The separator plate has an upper limit stop that is generally level with the head of an operator.