baber/WOPTO huggingface dataset:
Patent GB-1444495-A (GB)
Title: Apparatus for heat-treatment of synthetic yarns
IPC: D02J13/00
Filed: 1974-09-26
Abstract: 1444495 Heat transfer devices BARMAG BARMER MASCHINENFABRIK AG 26 Sept 1974 [26 Sept 1973] 41885/74 Heading F4U [Also in Division D1] Yarn heating apparatus, which may be used in a false-twist crimping operation and embodies a closed pipe system under the vapour pressure of a heat transfer medium which can be evaporated and condensed, comprises an evaporator 1 partly filled with heat transfer liquid, a condenser 2, yarn heating tubes as at 3 with convexly curved yarn contacting surfaces and intercommunicating as by connecting tubes as at 5 and 6, and condensate return pipes as at 4. The embodiment of Fig. 3 also comprises individual yarn heaters in the form of jacketed tubes 13 on both sides thereof, an evaporator 11, condenser 12, condensate return pipes 14 and connecting tubes 15 and 16. Internal, transverse baffle plates 22 perforated or shaped to accommodate heating, e.g. electrical resistance, elements 7 or 17 and spaced along the length of the evaporator 1 or 11 form -compartments therewithin whereby any pressure wave starting to develop in the evaporator due to spontaneous formation of vapour bubbles and resultant movement on the surface of the liquid is damped and confined and the control of the operating temperature of the apparatus is thereby facilitated. The elements 7 or 17 may be enclosed by regularly perforated sheeting in the region between baffle plates and the intermediate space may be occupied by wire turnings, shavings or sharp-edged metal sheet chips.
Patent GB-1477637-A (GB)
Title: Radiography
IPC: C09K11/86
Filed: 1973-09-06
Abstract: 1477637 Luminescent materials and uses thereof AGFA-GEVAERT 7 Aug 1974 [6 Sept 1973] 41963/73 Heading C4S [Also in Division H5] To improve radiographic, particularly mammographic, sensitivity and sharpness a photographic Ag halide emulsion is combined with an intensifying screen emitting blue light from a La-O-halogen phosphor activated by rare earths, the screen carrying pigment and/or dye to absorb preferably backward and/or oblique fluorescent emission. The photographic light sensitive element may be AgBr-AgI highspeed emulsion optionally combined with a finer low speed AgCl emulsion carrying a phenol or alpha-naphtha derived colour coupler to produce a combined black and white and cyan image on development. Each emulsion layer carries an integral or separate intensifying screen and such a layer is coated on one or both faces of a support film. The intensifying screens carry 200-800 g./m.<SP>2</SP> of phosphor, emitting blue light of 400-500 nm (see figure, not shown) and comprising, where X = Cl or Br (a) La 1-n .Tb n <SP>+3</SP>OX, 100 < n < 6000 p.p.m. molar, e.g. n = 200; or (b) La 1-w-y OX : Tb w Yb y , 500 < w < 6000 p.p.m. molar, e.g. w = 200; 50 < y < 5000, e.g. y = 500; or (c) As (a) mixed with Tb activated Y oxysulphide. In (b) Yb suppresses afterglow: a blue-absorbing pigment or dye is incorporated in the screen, and optionally in the emulsion in removable or decolorizable form, to absorb preferentially oblique and backward fluorescent rays. When screens with associated emulsion lie on both sides of the base, the base or the emulsions may carry a dye removed or decolorized in processing, to absorb cross-over light from the remote screen. The speed of the combined emulsion and screen is several times higher than with prior art CaWO 4  phosphor: against conventional screenless mammography speed is increased 5 times and development time reduced 15 times. Reference is made to Specifications 1,319,569 and 1,247,602.
Patent GB-969963-A (GB)
Title: Improvements in or relating to exchange processes
Inventor: MIHAIL ARLETTE MARCELLE
IPC: G21C15/02
Filed: 1960-12-06
Abstract: 969,963. Cooling reactors. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Dec. 6, 1960 [Dec. 9, 1959], No. 42004/60. Heading G6C. In a reactor cooled by a suspension of a liquid in a gas, the liquid is injected into the flow of gas through the reactor at points distributed along the flow. The liquid may be a moderator, e.g. D 2 O or H 2 O, injected through the walls of fuel channels into a gas such as air or CO 2  flowing along the channels. Alternatively liquid may be fed through pipes 10 inside tubular fuel elements in a block of graphite, as shown. The liquid may be atomized and distributed by the speed of the gas flow, by expansion at the injection orifices, or by using a gas flow, divided into separate vortices as described in Specification 951,613. Heat is extracted from the reactor by passing the mixture of gas and vaporized liquid through a heat exchanger where the liquid is condensed and thus separated from the gas.. The distribution of liquid in the fuel channels is controlled by the arrangement and dimensions of the orifices.
Patent GB-1199208-A (GB)
Title: Weir Construction and Liquids Distributor Embodying the Same
Inventor: ECKERT JOHN S
IPC: B01D3/18
Filed: 1968-09-04
Abstract: 1,199,208. Regulating fliud-flow. NORTON CO. Sept.4, 1968 [Feb.2, 1968], No.42069/68. Heading G3H. [Also in Divisions B1 and B2] The wall of a trough supplying liquid to a packed gas/liquid contact column or of a weir supplying liquid to a bubble-cap tray has one or more openings 22 of Y-shape through which liquid flows. As shown the stem 24 of the opening extends into a grooved portion 30, the upper edge 26 of the grooved portion being shaped like a meniscus.
Patent GB-975763-A (GB)
Title: Improvements in or relating to variable-impedance electric circuits
Inventor: MCPHERSON JOHN WEMYSS
IPC: G05F1/59
Filed: 1961-11-24
Abstract: 975,763. Transistor circuits. GENERAL ELECTRIC CO. Ltd. Nov. 22, 1962 [Nov. 24, 1961 ; Jan. 17, 1962], Nos. 42710/61 and 1791/62. Heading H3T. [Also in Division G3] A variable impedance arrangement for a series voltage regulator comprises a plurality of parallel connected transistors 10-13 controlling paths of successively diminishing resistance, the bias on the transistor control electrodes, which are connected to successive points on a potentiometer 17-20 being varied by varying the voltage across the divider. An error amplifier 33, 34 compares a reference voltage across Zener diode 37 with a fraction of the output voltage 3, 4 on the tapped resistor 38 to control the current through potentiometer 17-20 which successively and progressively turns on transistors 10-13 through emitter follower networks 22, 23, 29, 30, the latter pair being fed from a separate source 21 to avoid drawing a large base current from source 1 when the voltage at input terminal 1 is low.
Patent GB-1445373-A (GB)
Title: Frequency adapter particularly for a helicopter with rigid  blades
IPC: B64C27/51
Filed: 1973-09-11
Abstract: 1445373 Helicopter rotors ARFINA ANSTALT FUR CONTINENTALE UND UEBERSEE FINANSTRASSE 11 Sept 1973 42571/73 Heading B7W [Also in Division F2] A frequency adaptor for a helicopter blade acting as a damper at one frequency and as a stiffener at a higher frequency comprises cylindrical rigid members 1, 2, one within the other and having interposed between them a resilient packing 9 and at least one damping member 23 containing a substance such as unvulcanized silicone grease which is forced through a constriction 28 when one member is moved relative to the other. The frequency adaptor is intended to be mounted below a helicopter blade and parallel with its axis. A steel attachment tube 5 is force-fitted into the sleeve 1 and passes freely through the rod 2. An attachment lug 3 on the rod 2 is connected rigidly to the blade and the tubes to the rotor. Between the sleeve 1 and the rod 2 (which may be of light metal) are rings 10, 11 bonded together by vulcanized silicone 12 or natural rubber, the bonded units having internal and external coverings of an elastomer to contact the sleeve and rod. The rings 10 of the units 10, 11 are held between rings 15 and 16 and the rings 11 between screwed rings 17 and 19. On each side of the adaptor, two rings 25, 27 are interposed between the units 10, 11, the space between the rings being filled through ports 30 with the crude silicone grease. In operation, when the rod 2 is moved relatively to the sleeve 1, the movement is opposed by the silicone 12, and by the grease being forced through the restrictions 28. In a modification, the dampers have three constrictions of 1 mm. clearance. In a further modification, the silicone .12 is replaced by Belleville springs (32, Fig. 3) and sealing rings.
Patent GB-1277288-A (GB)
Title: Thermoplastic encapsulation
Inventor: TOROSSIAN KEVORK ARA
IPC: H01G13/00
Filed: 1969-08-27
Abstract: 1277288 Encapsulating condensers GENERAL ELECTRIC CO 27 Aug 1969 [11 Sept 1968] 42630/69 Heading B5A [Also in Division H1] An electronic device 30, e.g. a capacitor roll, is supported within the cavity of a mould 20 between opposed pins 23, 24, during partial encapsulation by an injected thermoplastic 40 which then acts to support the device as the encapsulation is completed by injecting further thermoplastic 40, at pressure higher by at least 2000 p.s.i. into the mould cavity space from which the pins 23, 24 have been retracted. The preferred device is a condenser comprising a pair of convolutely wound electrode foils of suitable metal, e.g. aluminium, copper, or tantalum, which are insulated from each other by dielectric material sheets of cellulosic or synthetic polymer, e.g. polyethylene terephthalate, and which have axially or radially projecting terminal wire leads. Alternatively the electrodes of the condenser roll may comprise coatings, e.g. of aluminium, tin, silver, copper, lead, zinc, or carbon, applied to a dielectric material sheet, or at least one electrode of tantalum or aluminium film, which is advantageously etched, and which has a dielectric oxide film thereon. The dielectric sheets may be impregnated with electrolyte. The moulded thermoplastic encapsulant may include either a pair of spaced feet 14, or a single longitudinally extending foot. In the described process, the electrode leads 31 are clamped between the vertically separable halves 21, 22 of the mould 20, and both injections are effected, by a vertical machine provided with a screw pre-plasticizer, through a gate 46 located close to the pins 23 and 24. The pins 23, 24 engage the capacitor at an area comprising at least 1/3 the length and � the width of the capacitor. One or both pins 23, 24 may be spring loaded. The mould may be cooled. A plurality of devices may simultaneously be encapsulated in an automated process. The encapsulating thermoplastic may comprise polystyrene, polyethylene, polypropylene (which is copper stabilized if encapsulating copper foils or leads), or blends such as polystyrene with a polyphenylene ether, e.g. poly(2,6- dimethyl-phenylene-1,4)ether, and may include fillers such as titanium dioxide, glass fibres, alumina, iron oxide talc, or mica dust.
Patent GB-1205605-A (GB)
Title: A pierce nut
IPC: F16B37/06
Filed: 1967-09-20
Abstract: 1,205,605. Nuts. BULTFABRIKS A.B. 20 Sept., 1967 [22 Sept., 1966], No. 42762/67. Heading F2H. A pierce nut adapted to be attached to a sheet member 18 comprises an axially extending nut body 10 and a square faced attachment member 14 extending axially from one end of said nut body and adapted to be secured to a sheet member, the attachment member having straight sides which are spaced inwardly from the outer peripheral surface of said nut body providing a radially extending surface 13 therebetween on the end of the nut body from which the attachment member extends. The attachment member may be provided with a circumferential groove 15 for engaging the edge of the sheet member. In another embodiment the surface 13 is also provided with a groove.
Patent GB-1510290-A (GB)
Title: Sheet feed apparatus for a photocopying machine
IPC: G03G15/04
Filed: 1976-10-14
Abstract: 1510290 Feeding sheets HOESCHT AG 14 Oct 1976 [16 Oct 1975] 42769/76 Heading B8R Sheet originals 32 are manually fed along a feed table 30 up to a lowered stop 31. A switch is then manually actuated to apply suction to the table, raise the stop and advance the original, now held in registered position on the table, to the open jaws of a gripper bar 16. The table trips switch S3 causing the jaws to close, suction to be released and clutch 14 to be engaged. The clutch causes arms 18, which support the jaws, to rotate with a constantly rotating sheet support drum 10. Thus the original is fed with the drum past an exposure station 28. Spring biased brushes 22 and roller 34, which are lifted by cams 27 as the arms 18 pass, hold the original to the drum. For a single copy, after an approximately 230 degree rotation the gripper jaws release the original into a trough 37. For multiple copies, the time of passage of the original past switch S1 is detected and the jaws opened after the calculated time to make a desired number of copies of the original has expired. Roller 36 may be operated by a fluid motor.
Patent GB-1429562-A (GB)
Title: Feeding o- material to plasticators
IPC: B29C45/72
Filed: 1973-03-01
Abstract: 1429562 Feeding webs E I DU PONT DE NEMOURS & CO 1 March 1973 [13 March 1972] 42789/75 Divided out of 1429561 Heading B8R [Also in Division B5]  Means for controlling the supply of rubber &c. strip 64 to an injection moulding machine (see Division B5), comprises idler rollers 66, 68 and a feed roller 70 driven by an hydraulic motor 71 at a rate at least as great as to meet the material input requirement rate of the screw. When the feed rate is too great the strip will loop upwardly out of contact with the driven roller 70.
Patent GB-1123405-A (GB)
Title: Rubber compositions for inserts
IPC: C08L27/12
Filed: 1965-10-08
Abstract: A vulcanizable composition comprises 85-97.5 parts by weight of a thermosetting high molecular weight copolymer of vinylidene fluoride and hexafluoropropylene, 15-4.0 parts by weight of a thermoplastic, low molecular weight, liquid copolymer of vinylidene fluoride and hexafluoropropylene and 15-2.5 parts by weight of silicone gum together with one or more adjuvants.  An adjuvant is a substance which is conventionally added to vulcanizable compositions to facilitate preparation of the desired vulcanized product e.g. a vulcanizer, filler or activator. Typical compositions comprise: methyl vinyl siloxane gum, MgO, CaCO3, thermal carbon black, N,N1-dicinnamylidene - 1,6 - hexanediamine, 2,4 - dichlorobenzoyl peroxide, hydrated sodium silico aluminate, zinconium silicate, hexamethylene diamine carbamate, zinc stearate and a fluoroethylene-propylene copolymer.
Patent GB-1504295-A (GB)
Title: 6 beta-fluoropregnane-compounds
IPC: C07J5/00
Filed: 1975-02-24
Abstract: 1504295 6# - Fluoro - #<SP>1,4,9(11)</SP> - pregnatrienes G PALLADINO 24 Feb 1975 [5 March 1974] 42978/77 Divided out of 1504294 Heading C2U Novel steroids are 6#-fluoro-1,4,9(11),16-pregnatetraen- 21 - ol - 3,20 - dione 21 - acetate; 6# - fluoro - 1,4,9(11) - pregnatriene 16α,17α,21 - triol - 3,20 - dione 21-acetate; and those of the formula wherein Ac is acetyl; R is 2-8C alkanoyl; and Z is H, α-CH 3  or #-CH 3 . They are prepared as illustrated in the following reaction schemes which also illustrate their conversion to the pharmacologically active steroids of the parent Specification.
Patent GB-1353049-A (GB)
Title: Production of copper phthalocyanines
IPC: C09B47/067
Filed: 1971-09-16
Abstract: 1353049 Preparing copper phthalocyanines BADISCHE ANILIN- & SODA-FABRIK AG 16 Sept 1971 [17 Sept 1970] 43123/71 Heading C4P  Copper phthalocyanines are prepared by reacting an optionally substituted phthalonitrile with copper powder at 150-300‹ C. in an inert solvent, e.g. nitrobenzene or trichlorobenzene, and in presence of an inorganic acid, an organic carboxylic or sulphonic acid or a mixture or an ammonium salt thereof. The phthalonitrile may be substituted by 1-4 chlorine or bromine atoms or by a 4-phenyl-group. The inorganic acids used include HCl, phosphoric, sulphuric and nitric acids and the organic acids used are formic, acetic, propionic, oxalic, succinic, maleic, fumaric, phthalic, benzoic, pnitrobenzoic, o- or p-toluene-sulphonic, nitrobenzene sulphonic and nitrotoluene sulphonic acids. Anhydrides of these acids may be used.
Patent GB-1520359-A (GB)
Title: Refrigeration system
IPC: F25B47/02
Filed: 1976-10-19
Abstract: 1520359 Defrosting EMHART INDUSTRIES Inc 19 Oct 1976 [24 Dec 1975] 43245/76 Heading F4H A refrigeration system comprises compressors 10, 12, 14, a discharge line 18, a condenser 20, a receiver 30, expansion valves 36, 38 associated with evaporators 40, 42, a return line 16, and a defrost system whereby hot gaseous refrigerant from the receiver 30 is able to pass selectively to either evaporator via a line 50. The refrigeration system includes pressure control means 48, in the form of a solenoid-actuated valve 86 in parallel with a check valve 88, in order to modulate the pressure lines 28, 32 and 34 whereby during defrosting the pressure in line 28 is greater than the pressure in lines 32 and 34. In normal operation, valve 86 is open, but when one of the evaporators requires defrosting, valve 86 is closed, forcing refrigerant through check valve 88 which is set at a predetermined value. The pressure differential created extends through the receiver 30, the line 50, and the respective solenoid-operated defrost valve 76, 78, to allow hot gas to flow in the reverse direction through the evaporator which requires defrosting. The system also includes a pressure reducing valve 54 in a receiver line 52 in order to maintain the refrigerant pressure in line 18 at a value always equal to or greater than the refrigerant pressure in the receiver. A heat reclaiming coil 56 may also be included in the system.
Patent GB-1362899-A (GB)
Title: Collapsible vehicle-steering systems
IPC: B62D1/19
Filed: 1972-09-19
Abstract: 1362899 Collapsible steering column VOLVO AB 19 Sept 1972 43321/72 Heading B7H A collapsible steering assembly includes a steering shaft formed in two sections 15, 17, the upper shaft section 15 being axially movable between a first steering position (as shown) and a second, safe position in which the steering wheel 16 is remote from the driver, e.g. located in a recess 12 in the dashboard; latching means for releasably holding the upper section 15 in its first position; and means sensitive to vehicle retardation forces for releasing said latching means when said vehicle retardation forces exceed a predetermined magnitude (e.g. in the event of a collision) to permit free movement of the upper section 15 to its second safe position. As described the sections 15 and 17 are arranged telescopically with a splined connection and a sleeve 30 is arranged about the upper section 15 so that it is movable axially therewith but is prevented from rotating. The upper section 15 is held in its first position by a latch element 19 which engages an abutment 32 fixed to the end of sleeve 30 and the latch element 19 is held in its latching position by a toggle mechanism 22 consisting of levers 25, 27, the lever 25 carrying a weight 28. In the event of a collision the inertia of weight 28 "breaks" the toggle mechanism 22 to allow the latch element 19 to pivot anti-clockwise, thus releasing the sleeve 30 and upper shaft section 15. The sleeve 30 and shaft 15 then move to their second, safe positions, either by gravity and inertia, and/or by means of a compression spring 33. The sleeve 30 is prevented from rebounding from its safe position by a resilient wedge shaped collar 38 located in a conical opening in an abutment 34.
Patent GB-1463680-A (GB)
Title: Method and apparatus for granulating
IPC: B29B9/06
Filed: 1974-10-08
Abstract: 1463680 Granulating GUNTHER PAPENMEIER KG MASCHINEN-UND APPARATEBAU 8 Oct 1974 [10 Oct 1973 1 Feb 1974] 43527/74 Heading B5A Material is compacted and granulated in the nip between two relatively rotating members while being moved axially of the members to outlet apertures the material being forced through the apertures and divided into granules. One or both of a pair of rollers 26, 27, Fig. 2, are provided with helices 28, 29 which cause the material to move towards one or both ends of the rollers (Figs. 4 and 5, not shown) or towards the middle, as shown, where it is forced through apertures 30, cut by a knife 31 and removed through a space 32 by compressed air or suction. The rollers may be smooth and have inclined axes which causes the material to move to one end (Fig. 5, not shown). Three rollers may be used to form two nips, the material moving in opposite directions but by a different amount in each nip. Alternatively, Fig. 1, the members may be a smooth driven roller 14 inside a drum 13 loosely mounted loosely on rollers 12 and having a helix 17 leading to outlet apertures 19 and a knife 21. Two independently driven rollers 64, 65, Fig. 6, having opposite helices may operate within a drum 61 mounted on driven rollers 70. Material is fed in through an aperture 72 in an end of the drum and forms a layer inside the drum. The material is forced towards the outlet openings 75 and a knife 76 by roller 65 and to a lesser extent in the opposite direction by roller 64 to knead the material.
Patent GB-911475-A (GB)
Title: Process for the manufacture of amino-acetals
IPC: C07D277/64
Filed: 1960-12-19
Abstract: Amino-acetals of the formula:  <FORM:0911475/IV (b)/1> but which may be ionic compounds representable as, when n = 1, <FORM:0911475/IV (b)/2> can be obtained by reacting a gem.-dichloride of the formula: <FORM:0911475/IV (b)/3> with a metal, especially alkali metal, alcoholate of an appropriate aliphatic, cycloaliphatic alcohol or a metal phenolate, where in the above formulae, R1, R2 and R5 each represent an alkyl, cycloalkyl, aralkyl or aryl residue, R3 and R4 each represent a hydrogen atom or an alkyl, cycloalkyl, aralkyl or aryl residue, or R1 and R2 together with the nitrogen atom may form a heterocyclic ring, or R2 and R4 together with the ethylene group and the nitrogen atom may form a heterocyclic ring, and n is 1 or 2.  Of the acyclic alcoholates, those containing 1 to 6 carbon atoms are preferred.  The reaction may be carried out in an inert solvent at a temperature not greater than 20 DEG C.  Acetals, whose preparations are described, include those having the general formula: (CH3)2N-CH(OR)2 where R is an ethyl, cyclohexyl, benzyl or phenyl group; and the compound having the formula: <FORM:0911475/IV (b)/4> The acetals can be condensed with compounds having reactive methyl or methylene groups to form methine dyestuffs (see Group IV(c)). The amino-chlorides may be prepared by reacting the corresponding carbonyl compounds with phosgene; thus a -methyl-b -dimethylaminoacrolein is reacted with phosgene in methylene chloride to yield (CH3)2N-CH = C(CH3)-CHCl2 which may, however, be ionic in structure.  Specification 870,454 is referred to.ALSO:Methine dyestuffs are obtained by condensing a compound containing reactive methyl or methylene groups with an aminoacetal (see Group IV(b)) which in non-ionic form has the general formula <FORM:0911475/IV (b)/1> in which R1, R2 and R5 each represent an alkyl, cycloalkyl, aralkyl or aryl residue, R3 and R4 each represent a hydrogen atom or an alkyl, cycloalkyl, aralkyl or aryl residue, or R1 and R2 together with the nitrogen atom may form a heterocyclic ring, or R2 and R4 together with the ethylene group and nitrogen atom may form a heterocyclic ring, and n is 1 or 2.  In an example, a blue-green crystalline product is obtained by condensing the amino-acetal of formula <FORM:0911475/IV (b)/2> with dimethyl-benzthiazolium chloride.  Specification 870,454 is referred to.