baber/WOPTO huggingface dataset:
Patent GB-1330724-A (GB)
Title: Switching circuit
IPC: H03K17/687
Filed: 1971-04-19
Abstract: 1330724 Gating circuit; muting SANSUI ELECTRIC CO Ltd 19 April 1971 [20 Feb 1970] 22163/71 Heading H3T In a gating circuit comprising a field-effect transistor 1a connected in series with a signal path 3, 4, distortion of the signal, due to the magnitude of the signal causing the drain or source to gate voltage to vary and so the conductance of the channel, is avoided by biasing the field-effect transistor such that the voltage between the gate and drain and gate and source is kept constant while the transistor 1a is passing signals. In the Figure the transistor 1a is normally on and has its gate-channel junction forward biased to clamp the gate to the potential of the drain and source. The transistor 1a is turned off by applying a voltage Vc to transistor 8 sufficient to make 8 turn on. In a further embodiment (Fig. 2, not shown) using a MOSFET 1b at least one diode is connected between the gate and source or gate and drain and is forward biased while the MOSFET is conducting signals so providing a voltage clamp between the gate and drain or source and is reverse biased when the MOSFET is cut off. A respective diode may be connected from the gate to the source and from the gate to the drain.
Patent GB-614972-A (GB)
Title: A process and apparatus for extracting oil from fish-liver or other oil-containing parts of fish or marine animals
IPC: C11B1/00
Filed: 1946-07-25
Abstract: In the extraction of oil from fish-liver, whale blubber and other fish or marine animal parts by disintegrating the liver &c., removing the tendons and separating the remainder in a centrifugal separator, the disintegration of the liver and the disengagement of the tendons are effected simultaneously in an arrangement comprising one or more, in the latter case coaxial, rotating perforated cylinders in which stationary rods, pins, &c. are arranged which disintegrate the oil-containing part of the liver, allowing it to pass on whilst retaining the tendons.  In the form shown, the perforated cylinders 1, 2, 3, carried by a rotatable shaft 4, are enclosed in a housing 5 covered by a lid 6, to which the <PICT:0614972/III/1> rods, pins, &c. 7, 8, 9 are affixed.  The tendons wind around the rods and remain within the cylinders, the liver mass being discharged into a tank 11 from which it is fed to the centrifugal separator 12.  Water may be added through pipe 10 and also to the tank 11 to dilute the mass and the latter may also be heated in the tank 11.  The perforations in cylinder 2 are finer than those in cylinder 1, and the perforations in the latter have the rims on its inside bent up and with curved edges to increase the disintegrating effect.
Patent GB-1315542-A (GB)
Title: 4-phenyl-butyric acid derivatives
IPC: A61P25/04
Filed: 1970-05-07
Abstract: 1315542 4-Phenyl-butyric acid derivatives ETABS CLIN-BYLA 7 May 1970 [12 May 1969] 22202/70 Heading C2C Novel 4-phenyl-butyric acid derivatives of the general formula wherein R<SP>1</SP> is a chlorine atom or a nitro group, R<SP>2</SP> is an isopropyl, tertiary-butyl or cyclohexyl group, each of R<SP>3</SP> and R<SP>4</SP> is a hydrogen atom or one is a hydrogen atom and the other is a hydroxyl group or both together form an oxygen atom and R<SP>5</SP> is a hydroxyl or alkoxy group, OM where M is an equivalent of an alkali or alkaline earth metal, or NYZ where Y is a hydrogen atom or C 1-4  alkyl group and Z is defined as Y or is a tertiary amino-alkyl group or NYZ is a heterocyclic group having 5-7 ring atoms, with the proviso that when R<SP>1</SP> is a nitro group and R<SP>5</SP> is a hydroxyl group, R<SP>3</SP> and R<SP>4</SP> can only be taken together to form an oxygen atom and when R<SP>5</SP> is NYZ then R<SP>3</SP> and R<SP>4</SP> are each a hydrogen atom, and, when R<SP>5</SP> is a basic group, acid addition salts thereof are prepared (a) when R<SP>1</SP> is a chlorine atom, R<SP>3</SP> and R<SP>4</SP> together form an oxygen atom and R<SP>5</SP> is a hydroxyl group, by treatment of a 4-phenylbutyric acid of the general formula with anhydrous aluminium chloride, followed by monochlorination and decomposition with acid of the resulting complex; (b) when R<SP>1</SP> is a chlorine atom, each of R<SP>3</SP> and R<SP>4</SP> is a hydrogen atom and R<SP>5</SP> is a hydroxyl group, by Wolf- Kishner or Clemmensen reduction of the product of (a); (c) when R<SP>1</SP> is a chlorine atom, one of R<SP>3</SP> and R<SP>4</SP> is a hydrogen atom and the other is an hydroxyl group and R<SP>5</SP> is an hydroxyl group, by complex hydride reduction of the product of (a); (d) when R<SP>1</SP> is a nitro group, R<SP>3</SP> and R<SP>4</SP> together form an oxygen atom and R<SP>5</SP> is an hydroxyl group, by mononitration of a 4- phenylbutyric acid of the second general formula above; (e) when R<SP>5</SP> is an alkoxy group, by esterification of the corresponding free acid with an alkanol in the presence of a hydrogen halide; (f) when R<SP>5</SP> is NYZ, by reaction of the corresponding free acid with a thionyl halide and treatment of the resulting acid halide with ammonia or an amine of the general formula HNYZ; (g) when R<SP>5</SP> is OM, where M is an alkali metal atom, by neutralization of the corresponding free acid with an alkali metal hydroxide; (h) when R<SP>5</SP> is OM, where M is an equivalent of an alkaline earth metal, by treatment of the product of (g) with an alkaline earth metal salt; and (i) when R<SP>5</SP> is a basic group and the product is in the form of a salt, by salification of the corresponding free base with an acid.  Pharmaceutical compositions having antiinflammatory and analgesic activity comprise, as active ingredient, at least one 4-phenylbutyric acid derivative of the first general formula above, together with a pharmacologically acceptable carrier, and may be administered orally, endorectally or parenterally.
Patent GB-436177-A (GB)
Title: Improvements in or relating to electric signalling systems
IPC: H04Q1/45
Filed: 1934-07-31
Abstract: 436,177. Distinguishing A.C. signals from voice currents &c. FLOWERS, T. H., 60, Windsor Road, Palmers Green, London. July 31, 1934, No. 22316. Addition to 401,033. [Class 40 (iv)] [See also Group XXXVIII] In signal-receiving apparatus comprising two parallel circuits which control relays X, Y and which are shunted by tuned circuits TUX, TUY so that they are unresponsive respectively to two pure signalling frequencies, as in the parent Specification, the relays X, Y control a set of slow-release relays in such a way that a signal is effective only when the two signalling frequencies are received in immediate succession. The pure signalling frequency x operates X, but not Y, so that TX which is normally energized falls back and connects up RX which prepares a circuit for SIX. When the frequency x ceases, TX re-energizes, and if the pure signalling frequency y is immediately received, Y responds and releases TY, which completes the circuit of SIX before RX has time to relapse. In a similar way the frequency y followed by the frequency x brings about the operation of SIY in a circuit prepared by RY and completed by TX.
Patent GB-1292014-A (GB)
Title: A derivative of bis (2-hydroxyethyl)terephthalate and its use in polymer production
IPC: C08F20/20
Filed: 1971-04-19
Abstract: 1292014 Polymers of glycol terephthalate-bis acrylate CELANESE CORP 19 April 1971 [16 Feb 1970] 22347/71 Heading C3P [Also in Division C2] A resinous polymer of the diacrylate of bis- (2-hydroxyethyl) terephthalate is prepared by converting bis-(2-hydroxyethyl) terephthalate into its diacrylate and heating the diacrylate to effect polymerization. A catalyst such as benzoyl peroxide, dicumyi peroxide or azoisobutyronitrile may be used. Fillers such as clay, mica, silicates, magnesium oxide, asbestos, tile, glass fibres or graphite fibres may be present.
Patent GB-816031-A (GB)
Title: A process and product for improving the opacity of fibrous cellulosic products
IPC: D21H17/69
Filed: 1957-07-15
Abstract: 816,031. Paper containing titanium dioxide &c. FRAMALITE. July 15, 1957 [July 20, 1956], No. 22398/57. Class 96. Paper of improved opacity is made by adding to cellulosic paper pulp &c., an acid titanium gel, i.e. the product resulting from the hydrolysis of titanium sulphate (which may itself result from the action of sulphuric acid on a mineral such as ilmenite), and also adding a substance giving in aqueous solution under the conditions of use a negatively-charged colloid, the aqueous pulp being maintained in an alkaline condition. The negatively-charged colloid may be one of which the charge sign depends on the pH value. It may be a gelatine, starch or a resin, or an alkaline salt giving a colloidal anion on hydrolysis, e.g. a silicate, resinate, zincate, stannate, or an aluminate or antimonate of sodium, potassium or of ammonia.
Patent GB-269474-A (GB)
IPC: C25C1/14
Filed: 1926-09-11
Abstract: 269,474. Vulcan Detinning Co., (Assignees of Mcllhenney, H. R.). April 14, 1926, [Convention date]. Tin, depositing.-The electrolyte, e.g. sodium stannate or stannous chloride solution, is regenerated during electrolysis by the introduction of a. compound of tin soluble in the impoverished electrolyte but insoluble in water, which does not of itself supply any acid or alkaline component to the electrolyte.. In this way the accumulation of excess acid or alkali in the bath is avoided. A suitable compound may be precipitated from a solution of sodium stannate, preferably un-. saturated, by treatment with a suitable acid, an acid salt, or a gas of acid character, such as carbon dioxide.. The precipitate is washed but not dried before use. A solution of sodium bicarbonate may be used as precipitant; the reaction is assisted by agitation and heating. The regenerating compound may be added to the bath initially; it remains unaltered until electrodeposition has begun. A sodium stannate bath may be prepared by dissolving the compound prepared as above in sodium hydroxide, sodium cyanide or hydrochloric acid. The anode may be of iron and the cathode of an article to be plated. Pig-tin mav be obtained by subsequent melting of the deposit.
Patent GB-1010228-A (GB)
Title: Polytetrafluoroethylene molding powder and its preparation
IPC: C08F14/26
Filed: 1963-06-06
Abstract: Polytetrafluoroethylene moulding powders are prepared by polymerizing tetrafluoroethylene in contact with a stirred aqueous medium containing a free radical initiator and solid nuclei in the form of agglomerated nonwater-wet particles having a total surface area per gram of greater than 3 square metres, characterized in that the medium contains at least 5x1010 nuclei per millilitre, and continuing the polymerization until the particles have a reduced total surface area per gram of less than 9 square metres, and discontinuing the polymerization before the total surface area of the particles per gram falls below 3 square metres.  The nuclei may be glass, silica, carbon, insoluble metal silicates, titania, alumina, zirconia, polymers and copolymers of tetrafluoroethylene, vinylidene fluoride, hexafluoropropylene, chlorotrifluoroethylene and perfluoropropyl perfluorovinyl ether, polytetrafluoroethylene being preferred. The nuclei may be formed in situ by polymerizing tetrafluoroethylene in the aqueous medium in the presence of initiators and telogemically inactive dispersing agents, water-soluble chain transfer agents or comonomers.  Specified initiators are potassium and ammonium persulphates, organic and inorganic peroxides, redox systems and azo compounds.  Examples describe the polymerization of tetrafluoroethylene in the presence of ammonium persulphate and sodium tetraborate, using in Example III ammonium 3,6dioxa - 2,5 - bis - (trifluoromethyl) undecafluorononanoate, Example IV ammonium omega - hydro - hexadecafluorononanoate, and Examples V and VI ammonium perfluorooctanoate as dispersing agents.  The resulting slurries may be water-cut, and the moulding powders recovered by filtration.
Patent GB-910862-A (GB)
Title: Stabilized vehicles for leafing aluminium coatings
Inventor: BABCOCK GORDON MONTGOMERIE
IPC: C09D167/00
Filed: 1959-07-01
Abstract: A hard film-forming synthetic resin composition comprises (1) leafing aluminium pigment, (2) hydrocarbon thinner, (3) a synthetic resin selected from the group consisting of an alkyd resin having an acid number less than 8, a styrenated alkyd resin having an acid number less than 8 and mixtures of one of said alkyd resins with a melamine-aldehyde resin, (4) an acid selected from the group consisting of formic acid, maleic acid and phthalic acid, this constituent being provided by the reactants and catalyst used in preparing the resins, and (5) a stabilizing agent soluble in the hydrocarbon thinner and consisting of the addition salt product of a saturated fatty acid having at least 12 carbon atoms and an amine of the formula R3NHR4 where R3 is an alkyl radical and R4 is an alkyl group or hydrogen, the amount of (5) being 3,9-10,8% of the weight of combined leafing aluminium pigment and synthetic resin.  In the examples, the constituents of the compositions, apart from the resin, acid and the pigment, are thinners mineral spirits, xylol, high flash naphtha and tolulol and addition salt products prepared from dibutylamine, octadecylamine, methylamine or diethylamine and stearic acid.  A phenolicalkyd resin mixture is also mentioned. Specification 910,863 is referred to.
Patent GB-239375-A (GB)
Title: Improvements in and relating to the production of hollow bodies of concrete or the like
IPC: B28B21/86
Filed: 1924-09-25
Abstract: 239,375. Petty, J. P. Sept. 25, 1924. Moulding pipes &c.-A hollow body, such as a pipe, is constructed with a permanently retained metal spiral lining f which is preferably closecoiled, being flexed to suit the curved or other shape of the pipe and then surrounded by concrete after being placed in a suitable mould. The mould may consist of two sectionally built-up wooden frames, the sections comprising parallel slips held together by bolts. The pipes may be moulded with spigot-and-socket ends, while the lining may be reinforced prior to covering with concrete.
Patent GB-851800-A (GB)
Title: Improvements in and relating to internal expanding brakes
IPC: F16D65/22
Filed: 1958-07-15
Abstract: 851,800. Internal shoe-drum brakes. FICHTEL & SACHS A.G. July 15, 1958 [Aug. 2, 1957], No. 22706/58. Class 103 (1). In an internal shoe-drum brake, particularly for bicycles, the braking cam spindle 13 is adapted to be rotated in a direction opposite to the direction of rotation of the brake lever spindle 12 by means of an intermediate member in the form of a toothed system 11 comprising a pair of meshing toothed segments mounted on the braking cam spindle 13 and brake lever spindle 12 respectively. By rotating the cam spindle in the direction of rotation of the drum, excessive servo-effect on the brake shoes is avoided.
Patent GB-444378-A (GB)
Title: Improvements in sign or display apparatus
IPC: G09F11/34
Filed: 1935-08-13
Abstract: 444,378. Changing signs. LUTHI, J., Birsfelden, Basle, Switzerland. Aug. 13, 1935, No. 22803. Convention date, Aug. 15, 1934. [Class 3 (i)] A plurality of superimposed horizontal bars Aoo each carries one or more vertical display panels Doo connected to the bars by parallel links 18. Springs 19 acting on the links tend to bring the panels inwards against stops, the panels when in their innermost positions nesting behind one another. Each bar Aoo is provided with slots 14, 15 to guide it on vertical posts 16, 17, the length of the slot depending on the distance of the panel from its bar when in its inner position. To bring a panel to one of the display windows FIII, FIV, FV, FVI, FVII or FVIII in the outer casing 24, 25 a selected bar Aoo is pushed longitudinally. The panels carried thereby move at first parallel therewith till, when clear of the stack of panels they abut against a fixed buttress EIV, EVIII or EV, when they move outward to reach the respective window With a two-sided sign as shown, correspondingly marked panels are carried by each bar to appear at reversely corresponding windows, e.g. first and last from one end, so as to give a similar reading from each side. The bars Aoo are secured in both end positions by a notched lock-bar Goo pivoted at 26 to the bar and influenced by a spring 27 to align itself with the bar. The lock-bars are held out of alignment to prevent initial movement of the bar Aoo by a spring-pressed catch Hoo which can be withdrawn by a solenoid Joo. The reciprocation of the bars Aoo can be effected manually or by a motor, the latter, when employed, rotating a disc carrying a crank-pin which engages a slot in a reciprocating member L which during its left-hand movement pulls along with it all those bars Aoo, the lock-bars Goo of which have been released by their respective solenoids Joo, and on its right-hand movement pushes back said .bars and engages another set. One revolution of the disc thus removes a display and instates another. The lock-bars G of the returned bars Aoo are raised into re-engagement with their pawls Hoo by the pressure of the member L against an incline at the inner end of the engaging notch of the lock-bar. The disc rotates one revolution at a time, being held by a spring-pressed pawl engaging a notch in the periphery of the disc. The pawl is moved out of engagement momentarily at the required time by a servomotor, which also switches in the motor. The motor drives the disc through a friction clutch. In a modification, the sign is six-sided, one set of panels being actuated by a motor, and the other five sets being linked up by levers or chains.
Patent GB-1411906-A (GB)
Title: Ultramicrofiche viewer having information locating scale system
IPC: G03B21/11
Filed: 1973-05-14
Abstract: 1411906 Micro-fiches and viewers therefor UMF SYSTEMS Inc 14 May 1973 [22 May 1972]  22860/73 Headings G2J and G2X A micro-fiche has information arranged thereon in mutually perpendicular arrays, and also carries a scale corresponding to one of the said arrays. The viewer carries another scale, perpendicular to the first, and relative movement between the two scales enables information on any part of the fiche to be readily located for projection on to a screen. The fiche 18 is mounted round the periphery of a transparent drum 12 which can rotate and also move axially. The fiche carries a scale 36 which may correspond to certain digits or sequence of digits of the series of numbers carried on the fiche, as for example numbers of credit cards. Light from a source 20 passes through the particular portion of the fiche located in its path, and after being magnified by a lens system 26 is reflected by mirrors 28, 30, 32 on to a viewing screen 24. The viewer includes a second scale 38, transverse to the first scale 36, which is transparent so that scale 36 is visible therethrough. Scale 36 has a reference line 42 with which any mark on scale 38 may be brought into register. Thus by rotating drum 12 and then moving it axially, and using the two scales as a co-ordinate system, any desired portion of the fiche may be brought into view on the screen.
Patent GB-1391202-A (GB)
Title: Yarn feeding apparatus for knitting machines
IPC: D04B27/22
Filed: 1972-05-16
Abstract: 1391202 Warp beams; yarn feeding SPETSIALNOE KONSTRUKTORSKOE BJURO TRIKOTAZHNYKH MASHIN 16 May 1972 22867/72 Heading D1C [Also in Division G3] The rotational speed of a warp beam shaft driven from a shaft 10 is adjusted by a feed back arrangement which senses both the yarn tension and the diameter of the bobbin 12 and adjust the variable speed drive 6 using a phase sensitive device 4 and a reversible asynchronous motor 5. The position of a ring 7 which alters the transmission ratio is sensed by a sensor 13, the output of which is fed into a comparator 14 together with the output of the bobbin diameter sensor 11. The output from this comparator influences to the output from the yarn tension sensor 1 in a summator 3, the output of which is fed to a phase sensitive device 4 which can drive the motor 5 to adjust the transmission ratio.
Patent GB-259936-A (GB)
Title: Improved manufacture of building slabs or blocks
IPC: E04C2/36
Filed: 1926-09-16
Abstract: 259,936. Mathmah Ges., (Assignees of Fritz, H.). Oct. 15, 1925, [Convention date]. Slabs.-Building slabs or plates are formed by interfitting notched bars running in two directions at right angles to form a rectangular structure with box-like pockets or cells, and inserting into each cell members of cement-like material of a heat-insulating character so that a completely closed air compartment is formed in each cell. In assembling the slabs the members are inserted into one end of the cells, then diagonal stays are fitted across them and finally the members are inserted into the other ends. The heat-insulating substance used is slag concrete or wood concrete, and the completed slab may be faced on both sides and all round the edges. In the illustrated form, crossed notched wooden bars 1, 3 form the skeleton structure. These are covered by members 5 of fireproof insulating material such as wood concrete which form a level surface and also penetrate into the cells. The diagonal stays 6 are pointed at the ends to fit closely into the angles of the boxpockets. Grooved filfing-pieces 9 are secured in notches at the ends of the bars to receive tongues 10 for connecting adjacent blocks. Box-like cells of half the usual size are provided all round the edges of the block.
Patent GB-1433848-A (GB)
Title: Two-high rolls stands
IPC: B21B33/00
Filed: 1974-05-22
Abstract: 1433848 Rolling mills TH KIESERLING & ALBRECHT 22 May 1974 [23 May 1973] 22935/74 Heading B3M A two-high roll stand includes two columns 1 and 2 between which shafts 3 and 4 extend, the shafts having eccentric portions which support housings 9 and 10 carrying rolls 33 and 32. By rotating the shafts, the spacing between the rolls is adjusted, a safety overload device being associated with the adjustment mechanism. The housings 9 and 10 are constrained to move vertically by extensions 29 of the roll shafts located in elongated slots in column 2. To adjust the roll gap, the eccentrics are rotated by levers 11 and 12 (Fig. 2) associated with oppositely threaded portions 16<SP>a</SP> and 17<SP>a</SP> of composite spindle 16, 17. The spindle has a piston 16<SP>b</SP> which is urged upwardly by fluid pressure. When the rolling load exceeds a given value the spindle parts 16 and 17 are forced apart, the piston is urged downwardly, and an adjustable relief valve 28 opens to allow the rolls to move apart.
Patent GB-598715-A (GB)
Title: Method of filing photographic films of documents
IPC: G03B17/24
Filed: 1945-09-06
Abstract: 598,715. Suspended files. DEBRIE, A. L. V. C. Sept. 6, 1945, No. 23030. Convention date, March 17, 1943. [Classes 16 and 146 (i)] In a method of filing photographic films 1 of documents 2, the film strips are filed vertically and are suspended on the edges of an index-film box by means of a part 7, made of a sufficiently stiff material, and secured by any appropriate means to one of the faces of the film at the upper end and which overlaps to either side of the film. As shown, the tabs 7 are secured to the film 1 by means of tongues 5 passing through the perforations 6 at the edge of the film. As indexing mark 9 may be provided and filing information may be inscribed on the tab or be shown through a cut out portion. A tab, extending above the strip, may be secured to the outer edges of the film only, the central part of the film being left uncovered.