baber/WOPTO huggingface dataset:
Patent WO-03079706-A1 (WO)
Title: Verfahren und kommunikationssystem zum anbinden alternativer zugriffsnetze an ein kommunikationssystem, insbesondere gprs/umts
Inventor: JANKO OTTO
IPC: H04L12/56
Filed: 2002-03-19
Abstract: Die Erfindung bezieht sich auf ein Verfahren zum Anbinden alternativer Zugriffsnetze an ein Kommunikationssystem (GPRS/UMTS), bei dem eine teilnehmerseitige Station sich in einem ersten Kommunikationsnetz (UMTS/GPRS) einbucht und die teilnehmerseitige Station (MS) sich zu einem späteren Zeitpunkt in einem anderen Kommunikationsnetz einbuchen möchte. Vorteilhafterweise wird das andere Netz als untergeordnetes Netz dem ersten Netz angebunden, wobei die netzseitige Verwaltung der Station (MS) und/oder die Weiterleitung von Datenpaketen zu der Station (MS) in einer zentralen Steuereinrichtung (GGSN; MC) des Heimatnetzes (GPRS/UMTS) der Station (MS) durchgeführt wird. Die zentrale Steuereinrichtung (GGSN; MC) des eingebuchten Netzes (GPRS/UMTS) weist eine für die Teilnehmer bzw. solche Stationen spezifische Routingfunktionalität auf und ermöglicht für die Station (MS) ein vom Zugriffsnetz unabhängiges Routen der down-link und up-link IP-Pakete vom Internet zur Station (MS) und umgekehrt von der Station zum Internet.
Patent WO-02086423-A1 (WO)
Title: Vorrichtung zur erkennung der position, bewegungsrichtung und/oder geschwindigkeit eines körpers mit ferromagnetischen eigenschaften
Inventor: HARTMANN UWE
IPC: F15B15/28
Filed: 2002-04-15
Abstract: Die Erfindung betrifft eine Vorrichtung zur Erkennung der Position, Bewegungsrichtung und/oder Geschwindigkeit eines Körpers mit ferromagnetischen Eigenschaften, wobei die Position, die Bewegungsrichtung und/oder die Geschwindigkeit des Körpers erkannt werden soll, wenn sich dieser hinter einer Wand befindet, wobei ein Magnetfeldsensor vorhanden ist, wobei die Position, die Bewegungsrichtung und/oder die Geschwindigkeit des Körpers erkennbar ist durch die Änderung des Magnetfeldes aufgrund der Positionsänderungen des Körpers. Die Vorrichtung kann verwendet werden zur Erkennung der Position, Bewegungsrichtung und/oder Geschwindigkeit eines Stellgliedes eines Stellantriebes wie auch eines Molchkörpers.
Patent WO-03037409-A1 (WO)
Inventor: HUSCHMAND NIA ABDOLHAMID
IPC: A61B5/15
Filed: 2002-10-14
Abstract: L'invention concerne un dispositif de protection d'aiguille qui se présente sous la forme d'un élément coulissant clipsable (7) s'adaptant aux seringues (1) disponibles dans le commerce. Cet élément peut être clipsé latéralement sur le cylindre (2) de la seringue de façon à recouvrir l'aiguille (4) et la protéger. On peut ensuite le faire coulisser axialement sur le cylindre (2) pour le faire passer de la position de protection dans laquelle il recouvre l'aiguille (4) à une position de travail dans laquelle l'aiguille (4) est dégagée pour pouvoir être utilisée. Cet élément coulissant clipsable (7) comporte une section d'extrémité (8) creuse de forme conique qui entoure l'aiguille (4) lorsque ledit élément est clipsé sur le cylindre dans la position de protection. Ladite section d'extrémité (8) présente une fente longitudinale (9) par laquelle l'aiguille (4) peut être insérée latéralement lors de la mise en place du dispositif de protection ; elle comporte par ailleurs au niveau de sa pointe une ouverture (10) par laquelle l'aiguille (4) peut passer. L'élément coulissant clipsable (7) présente, à son extrémité opposée à la section d'extrémité (8) de forme conique, un entraînement à roues (15, 16, 17) qui peut être actionné manuellement pour déplacer axialement ledit élément.
Patent WO-2004004335-A1 (WO)
Title: Mobilfunkgerät mit eingebauter kamera
Inventor: WALKLING NICOLAI
IPC: H01R39/24
Filed: 2003-06-04
Abstract: Die vorliegende Erfindung betrifft ein Mobilfunkgerät mit einer eingebauten schwenkbaren Kamera, mit welcher Aufnahmen in zwei entgegengesetzt gerichtete Richtungen möglich sind. In einer festen örtlichen Relation zu dem Kameragehäuse (1, 7) oder dem Mobilfunkgerätegehäuse (6, 11) sind konzentrische Schleifringe (4a, 4b, 4c; 9a, 9b, 9c) vorgesehen sind, von denen einer mindestens eine elektrische Unterbrechung aufweist. Mittels in einer festen Lagerelation zum Mobilfunkgerätegehäuse (6, 11) oder dem Kameragehäuse (1, 7) vorgesehener Schleifkontakte (5, 10) werden beim Kontaktieren der Schleifkontakte (5, 10) mit den Schleifringen (4a, 4b, 4c; 9a, 9b, 9c) je nach Position der Kamera Stromkreise geöffnet und geschlossen.
Patent WO-2004068645-A1 (WO)
Title: Modulares installationsgerät
Inventor: FREIMUTH MICHAEL
IPC: H01R13/64
Filed: 2003-11-10
Abstract: Um ein mit Anschlussmodulen (7a-7d) versehenes Installationsgerät (1) anzugeben, das unter erschwerten Zugangsbedingungen, ebenso wie die Anschlussmodule (7a-7d), auf einfache Weise bei geringem Platzbedarf austauschbar sein soll, ist vorgesehen, dass neben einem Haltemittel (4) für ein daran ankoppelbares Tragemittel (5) auch ein Modulplätze (6a-6d) aufweisendes Gehäuse (2) für die Anschlussmodule (7a-7d) gegeben ist. Hierbei ist einerseits ein Kodiermittel (9a-9d) je Modulplatz (6a-6d) und ein Gegenkodiermittel (10a-10d) je Anschlussmodul (7a-7d) zur modulplatzspezifischen Zuordnung sowie andererseits ein Rastmittel (11) an zumindest einem der Modulplätze (6a-6d) und ein Gegenrastmittel (12) an zumindest einem der Anschlussmodule (7a-7d) zur modulplatzspezifischen Ver- und Entriegelung angeordnet. Je Modulplatz (6a-6d) ist ein eine Längsseite aufweisendes Kontaktmittel (16a,16b) und je Anschlussmodul (7a-7d) ist ein Gegenkontaktmittel (18) gegeben, wobei das Kontaktmittel (16a,16b) quer zu seiner Längsseite mit dem Gegenkontaktmittel (18) kontaktierbar ist.
Patent DE-1804824-A1 (DE)
Title: Artificial leather prodn
Inventor: GIESSMANN HERBERT
IPC: D06B3/10
Filed: 1968-10-24
Abstract: Colouring impregnating and coating synthetic leather By arranging for several functions to take place at the same time, except when treatment is required on both sides of the fabric, a continuous feed of textile material particularly synthetic leather, is fed in and looped through the equipment so saving on space in the process plant. Two or more colouring or coating units are placed over each other with the necessary printing rollers, drying jets, patterns and the like are all mounted in one housing fitted with necessary exhaust vents, with facilities for external operation of particular units for adjustment and alteration. The motive power source is also located outside the housing.
Patent DE-1805197-A1 (DE)
Title: Oil free alkyd resin coating agents
Inventor: FRANZ RIEMHOFER DR
IPC: C09D167/00
Filed: 1968-10-25
Abstract: Agents suitable for reaction with aminoplasts to form lacquer films consist of: A. 50-10% by wt. of polymers and/or oligomers containing N-CH2OH- or N- methylolether groups and B. 50-90% by wt. of HO- and CO2-group-containing polyesters having a mean M.W. of 600-3000 and produced by esterifying mixtures I and III-Mixture I consisting of I(1) 1-40, pref. 10-30 mol% of a C3-C6 polyol with 3 or 4 OH groups and I(2) 99-60, pref. 90-70mol% of a mixture II of aliphatic and opt. cycloaliphatic diols, mixture II being II(1) 70-30, pref. 60-40 mol% of ethylene glycol and II(2) 30-70, pref. 40-60 mol% of diethylene glycol and/or dipropylene glycol in which up to 30, pref. up to 20 mol% of the total II(1) and II(2) can be replaced by one or more other aliphatic or cycloalipahtic diols in which the OH functions are separated by 2-8 C atoms and in which optionally up to 2 C atoms can be replaced by O atoms which should be separated by at least 2 C atoms, and mixture III consists of III(1) 91-40, pref. 80-60 mol% of one or more aromatic or cycloaliphatic dicarboxylic acids or derivatives and III(2) 9-60, pref. 20-40 mol% of one or more C4-Cl2 aliphatic dicarboxylic acids or a derivative.
Patent DE-1811809-A1 (DE)
Title: Tabletting with instant sucrose
Inventor: GOTTFRIED SCHEPKY DR
IPC: A61K9/20
Filed: 1968-11-29
Abstract: Tablets, cores and coated tablets contng. "instant" sucrose, together with other conventional constituents. By compression, without previous granulation, of a mixt. of "instant" cane sugar and the other constituents. These other constituents may be one or more active agents; lubricants such as talc, Mg stearate or talc ground with stearic acid; substances to accelerate disintegration such as starch, micro-cryst. cellulose, formolised gelatin and cellullse glycolate; and easily water-sol. binders such as polyethyleneglycol and polyvinylpyrrolidone. The propn. of "instant" sucrose may be up to 90% for a diam. of 2.0-0.1 mm., with a max. of 65-85% of a diam. of 1.6-0.16 mm. Avoids previous granulation. "Instant" sucrose dissolves more rapidly than macrocryst. material.
Patent DE-1900202-A1 (DE)
Title: 1,3-dioxane derivs for use as plasticisers, - perfumes and intermediates
Inventor: BOECKMANN DR AUGUST
IPC: C07D319/06
Filed: 1969-01-03
Abstract: New 1,3,-Dioxane derivs (I) (where R=lower alkyl; X = OR1, where R1 = H; a metal or ammonium cation; C1-18 alkyl, possibly substituted with halogen, O or S; alkenyl; acyloxalkyl; 5-alkyl-1,3-dioxane-5-yl-methyl; aryl, alkaryl or cycloalkyl, possibly substituted; or acyl, especially 5-alkyl-1,3,-dioxane -5-yl-carbonyl; or X = SR2, where R2 = C1-18 alkyl or aryl; or X = halogen, amino or substituted amino), may be prepared by condensation of trimethylolakanes and HCHO.
Patent DE-1916798-A1 (DE)
Title: Drawing ptfe coated wires in the cold
Inventor: GRAND RENE
IPC: B21C9/02
Filed: 1969-04-01
Abstract: Process for cold drawing wires of steel, ferrous alloys or non-ferrous alloys is characterised by the wires being provided with an organic coating of the PTFE type before being drawn. The low frictional coefficient of the PTFE coating enables the coated wires to be cold drawn, with the use of gently reduced amounts of lubricant. Draw speeds can be increased, and metals difficult to draw, such as titanium and its alloys, can be more easily drawn. Tungsten carbide drawing elements can be used in place of diamond draw elements, and these elements have a longer life.
Patent DE-1930785-A1 (DE)
Title: Carbon containing iron-chromium-nickel - alloy used as additive in remelting charges
Inventor: FRITZ STADLER DIPL-ING
IPC: C22C33/00
Filed: 1969-06-18
Abstract: The alloy contains 10-30% nickel, 20-75% chromium, 4-6% carbon, 0-6% silicon, iron and impurities. The ratio of chromium to nickel is 2.5:1. The alloy is used to produce stainless, austenitic chromium-nickel steel.
Patent DE-1942246-A1 (DE)
Title: Circular loom weft thread compacting
Inventor: MALCHAIR ARMAND
IPC: D03D37/00
Filed: 1969-08-20
Abstract: Circular loom weft thread compacting Is carried out in a device consisting mainly of a number of plates close to and around the weaving ring, which have two degrees of freedom, and two different mechanisms attached to the rotating system of the loom, the first of which to bring the upper part of each plate into the web of the warp threads at the outside of the last weft thread in relation to the centre of the loom, and the second to move the moved plates to the centre of the loom, so that the successive plates with their upper part solidly and closely compacts the weft thread in the fabric.
Patent DE-1956042-A1 (DE)
Title: Triazolo-benzoxazines for plant protection
Inventor: GRIGAT ERNST DR
IPC: C07D498/14
Filed: 1969-11-07
Abstract: Triazolo-benzoxazines for plant protection. Novel cpds. of formula: (where R2-R5 are H, halogen, alkyl, aryl, alkoxy, aroxy, alkylthio, arythio, acyloxy, acythio, NO2, CN alkylamino, acylamino, carbalkoxy, carbaryloxy, sulpho(ester), aldehyde, or acyl, or 2 adjacent gps. may form a ring system opt. contg. heteroatoms R6 is opt. substd. aliphatic, aromatic or heterocyclic gp.) may be prepd. by reacting a cpd. of formula: (where X = halogen; R1 = aliphatic or arom. gp.) with hydrazine. Used for plant protection.
Patent DE-1965689-A1 (DE)
Title: Metallised paper prodn
Inventor: ROSSNAGEL GREGOR
IPC: D21H17/66
Filed: 1969-12-31
Abstract: Metallised paper, with the metal distributed throughout so that no differential dimensional changes occur or resin treatment, is produced by working metal powder in with the paper mass and precipitating it with Al2(SO4)3, Na aluminate, epichlorhydrin, polyethyleneimine, polyamines, and/or polyacrylates, which bind it to the fibres. Preferably different grain sizes and different metals are used in the powder, and organic or inorganic colourants may also be used.
Patent DE-1966796-A1 (DE)
Title: Pigmented polyester coatings hardened by - high intensity uv rays
Inventor: BROSE HORST
IPC: C09D161/24
Filed: 1969-12-24
Abstract: Pigmented coatings based on resins, which harden by condensation, (unsatd. polyesters with monomers, a peroxide catalyst and an accelerator) are hardened by electromagnetic rays produced from a high pressure mercury vapour lamp. The lamp is pref. enveloped with quartz, permeable to UV, used at temps. >400 degrees C (pref. 600-900 degrees C). Polyester surface is pref. at temp. >40 degrees C. The peroxide may be t-butyl peroctoate. Use of the high pressure lamp allows rapid hardening of coatings by a process suitable for industrial use.
Patent DE-2020012-A1 (DE)
Title: Applicator thermoplastic resin
Inventor: YAMAMOTO TARO
IPC: B05D1/18
Filed: 1970-04-24
Abstract: Appts. has an intermittently driven chain conveyor with holding magnets for the especially positioned goods and a container for the resin which moves up and down synchronously with the conveyor for dispensing the resin. A magnetic arrangement removes the coated goods from the chain belt magnets. Used e.g. for coating stoppers and bolts.
Patent DE-2029267-A1 (DE)
Title: Aluminium alloys suitable for eloxation - for decorative applications
IPC: C22C21/12
Filed: 1970-06-13
Abstract: High-brightness articles are produced from alloys contg. (in %) Cu 1.5-3, Mg 0.5-1.5, Si 0-0.7, Fe up to 0.1 Mn up to 0.5, Ti up to 0.2 and Zr up to 0.4, the balance being Al (purity >=99.8%). The material is aged at room temp. for 1 month, or at 160-200 degrees C for 12 hrs. Subsequently the material is subjected to eloxation. It has good mechanical properties and can be used for decorative purposes in building construction, motor cars, jewellery etc.
Patent DE-2061267-A1 (DE)
Title: Injection moulding machine - with separate injection and plasticising for continuous plasticising
Inventor: J VOX ANTON
IPC: B29C45/57
Filed: 1970-12-12
Abstract: Injection moulding machine in which plasticising is carried out continuously without idling periods between injection strokes is formed by a known plasticising and injection unit which is connected radially to a chamber provided with an injection piston and an injection nozzle and with a gate for the outlet from the injection unit, whereby the volume of the chamber is just large enough to accommodate the injection mass and the injection piston which corresponds in dia. to the dia. of the chamber is of a small dia.
Patent DE-2120175-A1 (DE)
Title: Hollow bodies with complicated inner cavities - construction methods
IPC: B29C33/50
Filed: 1971-04-24
Abstract: The principle is to make a two-layer construction. An inner lining is produced on the complicated form by any suitable method, either as one piece or in many parts which are then joined together. The outer shell is then added by spraying or casting. Inserts and mechanical reinforcements are incorporated in the lining in the first stage. The lining and shell are joined by cementing, welding or riveting, location being assisted by outer lugs in the lining.
Patent DE-2120859-A1 (DE)
Title: Gum-like confectionery - prepd in oxidn - modified waxy starch gelling agent
IPC: A23G3/42
Filed: 1971-04-28
Abstract: Gel-forming agent for prodn. of gum-like confectionery of low water-content, esp. hard gum sweets of xerogel-type usually made with gum arabic, consists of waxy starches modified by oxidn. with NaOCl, contg. 0.5-1% COOH gps. and having 30-60 (35-55) Scott-viscosity (50-200g./100 ml.) and pref. used in 30-45 wt.% concn./total wt. Pref. mixt. of modified waxy starch, sugars and water, obtd. at 70-90 degrees C, is boiled in a press. digester at 100-150 degrees C, cast to a moulding powder, while still warm, after addn. of flavouring agents and opt. dyes and dried at 50-60 degrees C to 8-12% water-content to form a xerogel. Modified waxy starches may be partly replaced by other gel-formers, e.g. gum arabic and/or other hydro-colloids, e.g. agar-agar and gelatine.
Patent DE-2132417-A1 (DE)
Title: High tensile pearlitic cast iron prodn - contg aluminium as replacement for silicon
Inventor: POHL DIETER DR
IPC: C22C37/00
Filed: 1971-06-30
Abstract: The cast iron, contg. 1.5-3.5% Al as a replacement for Si, contains pearlite stabilizing elements selected from the gp: Sn, Cu, Cr, Mo or V, and in addition 2.5-4.2% C, 0.01-0.8% Si, 0.2-0.9% Mn, 0.3% P, 0.15% S. The alloy is inoculated with a CaFeAl alloy during casting, the CaFeAl alloy having the compn. 20% Ca, 40% Al, 40% Fe.
Patent DE-2141556-A1 (DE)
Title: Injection moulding around beam - with simultaneous withdrawal of temporary supports
Inventor: SHARP HERBERT JOHN
IPC: B29C45/14
Filed: 1971-08-19
Abstract: An injection moulding method, for surrounding a rigid reinforcing member with plastics, uses retractable pins to hold the reinforcing member rigidly in the mould. As the material is injection moulded around the reinforcing member, the pins are withdrawn and, simultaneously, the size of the mould is reduced so that material already in it flows to occupy the spaces vacated by the supporting pins. Specif., the progressive withdrawal of wedges at the sides of the whole assembly causes upper and lower mould plates to approach one another slightly, thus reducing the vertical dimension of the mould, progressively as the lateral supporting pins for the rigid beam reinforcing member are retracted.
Patent DE-2208476-A1 (DE)
Title: Automatic shrimp peeling machine - aligning straightening out and flesh from head, tailand shell
Inventor: KOCKEN ALWIN
IPC: A22C29/02
Filed: 1972-02-23
Abstract: Completely automatic peeling of shrimps, comprises (a) individual supply of shrimps from a storage hopper by a transport device provided with suitable drive elements or a vibrating and pneumatic conveying device, (b) the direction of the shrimps through separate slide troughs or flat pipes in such a way that the head arrives first on a peeling drum, (c) the retention and transport of the shrimps in recesses situated in the rotatable shell of the peeling drum, by use of a partial vacuum, (d) the extension of the tail of the shrimp on the rotating shell of the drum by a brush or a foamed resin roller, (e) the cutting open of the chitin shell of the shrimp lying on its back, by a rapidly rotating circular knife or a stationary blade, (f) the ejection of the muscle flesh by an air or water jet directed into the slit in the chitin shell and the throwing of thi flesh into a sieve or onto a conveyor belt, and (g) the ejection of the remaining parts of the shrimp body by compressed air into a suitably adapted receiver or onto a further conveyor belt.
Patent DE-2218737-A1 (DE)
Title: Heat-sterilising appts - using rotating support carrying instruments to be sterilised
Inventor: SCHULZ PETER DR MED
IPC: F23D99/00
Filed: 1972-04-18
Abstract: The sterlizer, for instruments used in bacteriology or serology, comprises a heating zone or head and a support for the instruments which is driven in such a way that the instruments pass by the heating zone, for sterilization. As the rotation of the support continues, the instruments cool.
Patent DE-2220388-A1 (DE)
Title: Stabilising aromatic polycarbonates - by addn of n-acyl-phenothiazines
Inventor: BOECKMANN AUGUST DR
IPC: C08G63/00
Filed: 1972-04-26
Abstract: The polycarbonates, prepd. by melt polycondensn of aromatic dihydroxy cpds. and diphenylcarbonates, are stabilised by the addn. of N-acylphenothiazines of formula (I): (where R is H, 1-22C alkyl or -(CH2)n-C=O n 2s 0-10; R1-3 are H and/or 1-10C alkyl) in amts of 0.01-2.0 wt.%. (I) is added to the starting cpds. the reaction mixt or to the final polycarbonate. The polycarbonates are not deeply coloured by (I).
Patent DE-2229416-A1 (DE)
Title: Ampoule sterilizer - using stepped motion carousel with horizontal axis
Inventor: PECHMANN WILHELM
IPC: B08B9/28
Filed: 1972-06-16
Abstract: The carousel, or rotor, has an odd number of fins esp. hollow, onto which the ampoules are slid by a loading ram at one side and from which they slide off at an unloading station on the other side, when the suction is relased. The length of each step of motion of the conveyor rotor is equal to the distance between each pair of pins. The unloading station is approx. 180 degrees from the loading station.
Patent DE-2229733-A1 (DE)
Title: Moving mould for foamed thermoplastic - composed of two belts with anticurving device
Inventor: KORPELA HEIKKI
IPC: B29C44/30
Filed: 1972-06-19
Abstract: A continuous prodn. machine for foamed thermoplastic in band form comprises a pair of endless blets constituting a moving duct between them, in which the plastics containing expanding agent is conveyed through a heating zone and cooling zone; the returning, inoperative length of one or both conveyor belts passes through a gap curved transversely to the belt longitudinal axis, thus imparting to the belt a transverse curvature opposite to that which it tends to develop under the pressure of the foaming plastics. Pref., the curved gap is formed by a concave and a convex roll, between which the return length of belt passes.
Patent DE-2250005-A1 (DE)
Title: Drying chemical products eg medicines,dyestuffs etc - - by coating with pref methanol,which is then burned off
Inventor: BIRKE WALTER
IPC: F26B3/00
Filed: 1972-10-12
Abstract: Process is applicable partic. to prodts which require treatment in methanol during prepn., e.g. a dyestuff filter-cake washed in methanol. After methanol treatment, the prod. is pref. maintained at 1 - 40 pref. 1 - 15 degrees C until ignition is required. Opt. the methanol is mixed with water.
Patent DE-2301791-A1 (DE)
Title: Recycling water from gas washer - to concentrate dissolved solids, after separation of the undissolved solids
Inventor: LINDE ROBERT VON DIPL ING
IPC: C02F11/06
Filed: 1973-01-15
Abstract: Water from a gas washer is recycled, e.g. through a filter, settling tank or centrifuge, to remove undissolved solids and then the greater part of the recycled water is returned to the washer, a small proportion is bled off and evaporated, to promote concentration of the undissolved solids which can then be removed with considerable economy in heat consumption.
Patent DE-2308856-A1 (DE)
Title: Removing coatings from silk screen printing stencils - using sodium periodate esp as a paste
IPC: G03F7/42
Filed: 1973-02-22
Abstract: The sodium periodate is used as a 0.5-9 (pref. 3-6)% aq. soln. A pref. soln. is a 3% soln. of pH about 4.5 and thickened to a pasty consistency with an inert thickener, esp. silica aerogel. The soln. (or paste) is esp. useful for removing PVA coatings. It removes the coatings rapidly without attacking the substrates and can be used for selective coating removal.
Patent DE-2319869-A1 (DE)
Title: Integrated feed water heater and condensate cooler - for nuclear power plant with interstage turbine heater
Inventor: ULMER WERNER
IPC: F22D1/32
Filed: 1973-04-19
Abstract: Integrated feed water heater and condensate cooler in which the feed water heater containment houses a tube-plate in which the U-tube bundles of both the cooler and feed water heater terminate and in which the condensate cooler is enclosed by the heater tube bundle. Specif. the feed water heater dome is sub-divided by a central partition to materialise inlet and outlet feed water chambers. Feed water temp. is thus raised by steam supply to the shell side of the heater and by the condensate supply to the cooler from the turbine interstage heater. This condensate flow is regulated on the cooler discharge side by a control valve which adjusts to the level of condensate in the interstage heater. Thermal efficiency of the plant is enhanced and economises in plant cost and space utilisation are achieved.