Abstract: The appliance, in particular a coffee machine, comprises three boilers (1, 2, 3). In addition a heating element (10, 11, 12) is disposed in each boiler, which element can be switched on and off through one switching means each (20, 21, 22) which are provided in a control mechanism (16). In each of the boilers moreover there is one temperature sensor (13, 14, 15) to measure the temperature of the hot water. The control mechanism (16) has in addition computational means (17) as well as memory means (18, 19). Among other things predetermined desired temperatures for the water in the individual boilers as well as the maximum available power supply of the coffee machine can be stored in the memory means (18, 19). The control mechanism is designed in such a way that, based on the water heating pattern in the individual boilers, the heating capacity can be apportioned to the boiler which needs it most according to a certain order of priority.

Abstract: A coffee machine is provided having a housing containing removable first and second modules. The first module includes removably connected first and second submodules. The first submodule includes a brewing device. The second submodule includes a motor, a driving axle, gears for coupling the driving axle to the motor, and a further housing enclosing the motor and gears such that the driving axle extends through the housing and establishes a functional connection with said brewing device. The operational ability of the first module, when removed from the housing, can be checked because the means for supplying driving energy to the motor remains connected to the motor. For cleaning, the first submodule can be removed from the second submodule once electrical and liquid lines have been disconnected.

Abstract: An ejection device includes an ejection part (17) which is swivelingly fastened to a brewing cylinder (9) displaceably disposed along a parallel driving spindle (6), and a nose (22) disposed on a sidewall (2) of a frame (1). Mounted within and closing a cylindrical bore of the brewing cylinder are first and second pistons. The second piston (8) is, upon a downwardly movement of the brewing cylinder (9) away from the first piston, displaceable to a first or upper end of the brewing cylinder. Ground coffee (40) pressed into a cake is conveyed out of the brewing cylinder (9) during this displacement movement and rests upon a cambered end face (42) of the second piston (8). The ejection part (17) includes two rocking levers (18, 19) which extend at the sides of the brewing cylinder (9) longitudinally thereto and are swivelingly mounted in a lower region of the brewing cylinder (9) about a swivel axis (23). Ends of the rocking levers (18, 19) remote from the swivel axis are connected to an ejection plate (20).

Abstract: The brewing device comprises a brewing cylinder (9) with a cylindrical bore (10), in which a lower piston (8) is disposed freely moveable and longitudinally displaceable. An upper piston (7) is rigidly connected to a frame (1). Parallel to the vertically disposed brewing cylinder (9) there is a drive spindle (6) which has guide means (23). A drive element (24) connected to the brewing cylinder has further guide means (25) which engage with those of the drive spindle (6). By rotating the drive spindle (6) in one or the other direction, the brewing cylinder is displaced upwards or downwards. Through a pivotable hopper (12), the coffee powder is filled into the brewing cylinder.

Abstract: A brewing apparatus has a brewing cylinder (1) with a cylindrical bore (2) and two pistons (3, 4). The brewing cylinder (1) and the pistons (3, 4) are disposed displaceably relative to one another. In a brewing position the brewing cylinder (1) and the two pistons (3, 4) within the latter form a brewing chamber (5) in order to scald ground coffee therein through the feed of pressurized water. This water is fed to the brewing chamber (5) via a connection fitting (18) and via a through bore which extends through the wall of the brewing cylinder (1), into an annular gap (14) which is formed between a gasket (11) and the end face (13) of the second piston (4) facing the brewing chamber (5). Via a strainer (32), a conduit (34), and a further connection fitting (35), the coffee is discharged. Through the arrangement of the gap (14), the face (13) of the second piston ( 4) can be made without a strainer. The feeding of pressurized water to the gap (14) causes a self-cleaning effect in the latter.

Abstract: A control panel (14) contains four control levers (18). A control valve having a valve slide (55) capable of sliding in a valve sleeve (79) is assigned to each control lever (18). An electric motor (68) on whose drive shaft (70) a bevel gear (64) is mounted in a rotationally solid manner is also provided for each control lever (18). The bevel gear (64) engages with another bevel gear (66) that is connected with a shaft journal (62) in a rotationally solid manner. A follower pin (72) is eccentrically mounted in the shaft journal (64); it passes through one end of a push rod (57) and projects into a groove (73) in a shaft journal (58) passed through by the assigned control lever (18). In this manner, the two shaft journals (58, 62) are connected with each other through the follower pin (72) in a rotational manner. The other end of the push rod (57) is connected through a coupling (75) with a piston rod (56) that is in turn fastened to the valve slide (55).

Abstract: An operating table having a plurality of hydraulic jacks for adjustment purposes is equipped with a pressure fluid reservoir containing sufficient fluid to supply the jacks for carrying out several hundred strokes so that the operating table may be left free of any electrical equipment and of pressure fluid hoses leading to the outside during use of the table.

Abstract: A frame supporting a combined back-rest and seat of an operating table, together with a saddle-piece projecting from one end of the supporting frame, is disposed upon the head of a supporting column in such a way as to be tiltable in all directions, and supporting parts of a head- and shoulder-rest and of a leg-rest of the operating table are interchangeable, for the purpose of obtaining a wide range of radioscopic capability.