Abstract: A cast iron or aluminum sectional boiler has essentially annular sections, one front section, one rear section and at least one center section being provided which form a furnace chamber having essentially surrounding heating gas passages, and their annular water compartments are connected to one another via hubs. The sections have one return connection piece and one feed connection piece, one flue spigot as well as at least two anchor rods for holding the section block together. Annular gaps are provided as heating gas passages between each two adjacent sections, and that the heating gas passages are subdivided into a primary section and a secondary section.

Abstract: A sectional boiler is described as being made of cast iron or aluminum, in particular a condensing boiler, having essentially annular sections, a front section, a cover-shaped rear section and at least one center section being provided, which form a combustion chamber having an essentially surrounding heat exchanger made of a sectional block, whose annular water chambers are connected to one another via at least one hub and which has gap-like heating gas flues, having a return port and a feed port in the upper area and at least two armature rods for holding the sectional block together. The present system is based on the objective of optimizing a sectional boiler made of cast iron or aluminum particularly with respect to compactness and robustness.

Abstract: A cast iron or aluminum sectional boiler has essentially annular sections, one front section, one rear section and at least one center section being provided which form a furnace chamber having essentially surrounding heating gas passages, and their annular water compartments are connected to one another via hubs. The sections have one return connection piece and one feed connection piece, one flue spigot as well as at least two anchor rods for holding the section block together. Annular gaps are provided as heating gas passages between each two adjacent sections, and that the heating gas passages are subdivided into a primary section and a secondary section.

Abstract: The apparatus comprises a feeding device (1, 4, 5) for a row (3) of cookies (2) having an upwards or downwards facing bottom, an indexing device (6) transferring the cookies arranged in order to a de-positor conveyor (8) for bringing the cookies past a depositor device (9, 10) for applying a material to at least some of the cookies (2a), and means (11) for placing some of the cookies on top of other cookies, to which a material has been applied, to form sandwich cookies. The indexing device (6) is adapted to turn some of the cookies (2a) and let other cookies (2b) pass without being turned in such a manner that the cookies (2a), which are intended to be at the bottom of a sandwich, leave the indexing device up-side down and the cookies (2b), which are intended to be on top of a sandwich, leave the indexing device bottom down.