baber/WOPTO huggingface dataset:
Patent GB-622763-A (GB)
Title: Improvements in or relating to push-pull mixing circuits
IPC: H03D7/14
Filed: 1947-03-31
Abstract: 622,763. Superheterodyne circuits. PHILIPS LAMPS, Ltd. March 31, 1947, No. 8633. Convention date, July 26, 1944. [Classes 40 (v) and 40 (vi)] [Also in Group XL (b)] In a superheterodyne mixing circuit in which signals are applied in push-pull to a pair of rectifiers over a Lecher wire system 2<1>, 2<11>, Fig. 1, local oscillations are applied in parallel by means of a coupling inductance 5 and condensers 6<1>, 6<11> in order to prevent radiation. The Lecher wires are earthed by a shorting bridge 4 at the remote end, the potential at the aerial due to local oscillations being reduced by connection of the cathodes of the rectifiers to earth over a high impedance 7 such as a choke. Radiation may be further reduced by earthing the inductance 5 at a tap having the same potential for local oscillations as the rectifier anodes. The choke 7 may then be omitted. The arrangement may be modified to comprise a pair of inductances each coupling the local oscillator to one of the rectifiers, in place of the inductance 5. The mixing valves may be triodes, the local oscillations being self-generated by utilizing the inter-electrode capacities and back-coupling the grids and anodes over inductances 9<1>, 9<11>, condensers 10<1>, 10<11>, and a common impedance 11. A path of high impedance is provided from the anodes to earth by high-frequency chokes 7<1>, 7<11>, over which the intermediate-frequency output is taken. Radiation may be further reduced by earthing a tap on the impedance 11 or by means of an artificial tap comprising condensers connected between earth and the respective grids and anodes (Fig. 3, not shown). The impedance 11 may be a cavity resonator for stabilizing the oscillator frequency (see Group XL (b)).
Patent GB-1360635-A (GB)
Title: Paints and printing inks
IPC: C09B29/42
Filed: 1971-04-05
Abstract: 1360635 Paints and printing inks IMPERIAL CHEMICAL INDUSTRIES Ltd 3 March 1972 [5 April 1971] 8660/71 Headings C3P and C3R [Also in Division C4] A paint or printing ink comprises (a) a waterinsoluble monoazo dyestuff free from carboxylate and sulphonate groups and having, in one tautomeric form, the formula wherein A is the radical of a diazo component of the benzene, naphthalene or anthraquinone series; Z is H, or a hydrocarbon, heterocyclic or amino radical or a substituted derivative thereof; X is H, CN, COR, COOR, CONRR<SP>1</SP>, or a hydrocarbon or heterocyclic radical or substituted derivative thereof; Y is H, Cl, CN, COR, COOR, CONRR<SP>1</SP> or a radical as in X, or X and Y together form an optionally substituted fused benzene ring; and R and R<SP>1</SP> each independently represent H (except where X or Y is is -COOH) or an optionally substituted hydrocarbon or heterocyclic radical, or R, R<SP>1</SP> and N together form a 5- or 6-membered heterocycle, (b) a film-forming binder, and optionally (c) a solvent for (a) and/or (b). The binder may be a natural or synthetic resin, cellulose derivative, or a drying oil plus a drier. Conventional solvents are used. Optional additives are waxes, plasticizers, further dyestuffs, pigments, e.g. TiO 2  or carbon black, and extenders, e.g. barytes, SiO 2 , china clay or talc. In Example 2, a short or medium oil alkyd resin and 2 : 6-dihydroxy-3-cyano-4-methyl-5- (o-nitrophenylazo) pyridine are dispersed in xylene/butanol, and the dispersion is mixed with a xylene solution of a medium oil alkyd and a butanol solution of a melamine-formaldehyde resin to give a reddish-yellow paint. In Example 3, an aqueous dispersion of the (p) derivative of the Example 2 azo dye is mixed with an aqueous dispersion of TiO 2 , NaCMC and polyvinyl acetate in an acrylic emulsion to give a yellow paint. In Example 4 an alkyd resin derived from phthalic anhydride, pentaerythritol and a C 10  monoglyceride, and 2 : 6-dihydroxy-3-carbonamido - 4 - methyl - 5 - (m - nitrophenylazo)- pyridine, are dispersed in white spirit and the dispersion is mixed with further alkyd resin, an alkyd resin derived from castor oil, glycerol, phthalic anhydride, and rosin, copolymerized with methyl methacrylate, plus tung and linseed oils and white spirit to give a reddish-yellow paint. Numerous other dyestuffs are also exemplified.
Patent GB-1354048-A (GB)
Title: Safety belt buckle
IPC: A44B11/25
Filed: 1972-02-24
Abstract: 1354048 Safety belt buckles KLIPPAN GmbH 24 Feb 1972 [27 Feb 1971] 8673/72 Heading E2B A buckle for a safety belt includes a housing 5 and a plate-shaped tongue 7 slidably engageable within the housing 5 and adjusted to be connected to a safety belt. The housing 5 comprises a pair of similar mutually spaced plates 1 (2, Fig. 2, not shown) each of which is provided with a guide groove 12 extending transversely to the slider in direction of the tongue 7. The grooves 12 are in alignment with each other and slidably house a latch member 13 which is rigidly connected to a push button 16 and is spring biassed inwardly of the housing. The tongue is provided with a recess 10 in one of its mutually opposed lateral edges, which recess 10 when the tongue is inserted in the housing, is engaged by the latch member 13. In the construction shown the spring biassing of the latch member 13 is effected by a leg 19 of a spring 18 another leg 20 of the spring 18 engaging the tongue in its inserted position so that, in actuation of the push button 16, the tongue is released and urged out of the housing 5 by the leg 20. The housing is formed with a plastics material coating.
Patent GB-798316-A (GB)
Title: Improvements in or relating to means for preventing the opening of hinged articles such as windows
IPC: E05C17/28
Filed: 1956-03-20
Abstract: 798,316. Stays for hinged articles. HOOD, G. W. G., and STRASBOURG, A. March 20, 1956, No. 8732/56. Class 65(1) In a window stay comprising an arm pivoted at one end to the fixed structure and having the other end slidably engaged with a guide bar 11 on the window frame by means of a crosshead 16, a stop member 20 provided with one or more buttons 21 can be detachably engaged with keyhole slots 22 in the guide bar only when the window is in the closed position. The opening of the window is limited by the stop member sliding along the guide bar until the button 21 engages the end 25 of the keyhole slot, preventing further movement of the crosshead 16 towards the hinge axis 9. In another form hooks 31 on the stop member co-operate with notches 33 on the guide bar to allow the detachment or engagement of the stop member with the guide bar only when the window is closed. Sliding movement of the stop member, and hence the crosshead, toward the hinge axis is limited by a stop 35 on the guide bar.
Patent GB-492700-A (GB)
Title: Improvements in and relating to the manufacture of resinous compositions
IPC: C09F1/00
Filed: 1937-03-24
Abstract: Saturated or unsaturated fatty acids, resinic acids, naphthenic acids or other monocarboxylic acids or mixtures of such acids are esterified with esters of hydroxy-fatty acids containing at least 14 carbon atoms with polyalcohols and the ester so obtained is heated with natural resins, esterified natural resins, mixtures of dibasic acids (or anhydrides thereof) and polyhydric alcohols or with mixtures of phenols and aldehydes.  The heating may be carried out in the presence of one or more polyhydric alcohols in order that the final product be neutral.  Suitable esters may be obtained by heating castor oil, hydrogenated castor oil, the triglyceride of hydroxystearic acid or of dihydroxystearic acid or their glycol esters with stearic acid, oleic acid, linoleic acid, linolenic acid, octadecadiene acid, clupanodonic acid, resinic acid, colophony or naphthenic acid.  Drying oils, semi-drying oils, non-drying oils or the corresponding fatty acids may be present during the heating of the esters, and if desired the oils or fatty acids may be pretreated by oxidation, polymerization, or with sulphur, sulphur chloride or chlorine. In examples: (1) castor oil is heated with linseed-oil fatty acids and the product heated with colophony in the presence of glycerine; (2) castor oil is heated with octadecadiene acid and the product heated with phthalic anhydride and glycerine; (3) hydrogenated castor oil is heated with soya bean oil and the product heated with phthalic anhydride and glycerine; (4) castor oil is heated with octadecadiene acid and the product heated with phenol, aqueous formaldehyde, rosin and glycerine.
Patent GB-493600-A (GB)
Title: Improvements in and relating to vibratory screens
IPC: B07B1/46
Filed: 1938-03-22
Abstract: 493,600. Sifting-apparatus. WOLSING. HAM STEEL CO., Ltd., and BLAIR, G. March 22, 1938, No. 8772. [Class 117] The inclination of a screening surface is made non-uniform along its length so as to provide a shallow depression in relation to the general plane of inclination of the screen, and the tension of the screen can be adjusted without affecting the inclination of its parts. In the form shown, the inclination of the screen surface h on the feed side of the intermediate support p is greater than that of the delivery side thereof and slide members c<2> are provided to permit movement of the support h when the tension of the screen is adjusted by means of the nut k<1>. The screen is supported in the fixed frame a, a<1> by opposed springs in boxes e. The screen may be vibrated as a whole by a mechanism such as described in Specification 300,835, [Class 122 (i)], which may be mounted on the transverse member g of the frame c, c<1>, d, d<1> carrying the screen surface.
Patent GB-766000-A (GB)
Title: Improvements in or relating to the separation of supended particulate matter from gases
IPC: B03C3/15
Filed: 1955-03-25
Abstract: 766,000. Centrifugal separators. RESEARCH CORPORATION. March 25, 1955 [July 12, 1954], No. 8787/55. Class 23 [Also in Group XL(a)] In apparatus for separating solid or liquid particles from gas and comprising a cyclone separator having a helical vane 20 and a gas outlet tube 16 having an inlet in the vicinity of the particle outlet 14, means are provided for establishing an electrostatic field in the annular space between the gas outlet and the vane. The casing 10 and the outlet tube which is earthed, are of conductive material, and are insulated from each other by a ceramic top 18. A corona a discharge member 22, connected to a high voltage supply 28, is mounted on the vane which is of insulating 'material. In a modification the electrical supply is connected to the tube which in turn is connected to the member 22, and the casing is earthed. In a further modification (Fig. 3, not shown) the vane, the tube and the casing are of conductive material and the top is of insulating material, the electrical supply being connected to the casing and the tube being earthed. In another modification the casing and the vane are of insulating material, the tube being conductive and connected to the electrical supply whilst the member 22 is earthed. The apparatus may have one or more tangential inlets 12 for the gas to be cleaned.
Patent GB-1480705-A (GB)
Title: Process for developing a photosensitive resin plate after exposure
IPC: G03C5/30
Filed: 1975-03-03
Abstract: 1480705 Developing photo-sensitive resin plates SUMITOMO CHEMICAL CO Ltd 3 March 1975 [4 March 1974] 8789/75 Heading G2C Exposed photo-sensitive resin plates are developed by treatment with an aqueous solution containing 0À01 to 5 wt. per cent of a water-soluble alkali-metal aluminate, e.g. sodium or potassium aluminate, to remove resin at the non-exposed areas. The photo-sensitive resin composition may comprise an unsaturated polyester e.g. fumaric acid/ isopthalic acid/diethylene gylcol, a copolymer of acrylic or methacrylic acid e.g. copolymethyl methacrylate/methacrylic acid, or a cellulose or polyvinyl alcohol derivative having an oxyacial residue in a side chain together with a vinyl monomer e.g. triethylene glycol dimethacrylate, a photopolymerization initiator e.g. benzoin methyl ether and a thermal inhibitor e.g. hydroquinone.
Patent GB-734713-A (GB)
Title: Swivelled fluid supply apparatus for a rotary well-drilling rig
IPC: E21B21/02
Filed: 1953-03-30
Abstract: 734,713. Rotary well-drilling rigs. CHIKSAN CO. March 30, 1953 [April 14, 1952], No. 8790/53. Class 85. In a rotary well-drilling rig the drilling fluid supply apparatus comprises a fluid supply standpipe 21 to the top of which is connected by means of a swivel joint 26 a laterally extending tubular arm 25 the outer end of which carries a second swivel joint 27 connecting the arm to a flexible duct or rotary hose D through which the fluid is conducted to the swivel 17 at the upper end of a kelly 18. The flexible duct consists of a number of pipes 28 interconnected by swivel joints 29 of the form described in Specification 734,712, [Group XXVIII], the pipes being of different lengths, the longest being connected to joint 27 whilst the others are arranged so that they are progressively shorter as they proceed to the discharge end of the duct A swivel fitting F, Fig. 6, connects the shortest pipe to the gooseneck 19a of swivel 17, the fitting F consisting of L-shaped receiving and delivery sections 90, 91 which are interconnected by a sealed ball bearing joint. The construction of the swivel joint 26 and arm 25, described in detail in Specification 725,445 and that of duct D is such that in service the arm and the pipes 28 move freely between the lowermost and uppermost positions of the swivel whilst handling a substantial flow of drilling fluid at high pressure.
Patent GB-745151-A (GB)
Title: Improvements in or relating to air conditioning apparatus
IPC: F24F11/08
Filed: 1953-03-30
Abstract: 745,151. Automatic air-conditioning apparatus. CARRIER ENGINEERING CO., Ltd. March 30, 1953 [Sept. 6, 1952], No. 8801/53. Class 38 (4). [Also in Groups X and XIII] An automatic system controls an air conditioning plant to ensure that above a predetermined temperature and regardless of humidity the air is cooled whereas when the air has a temperature lower than a second predetermined temperature and has a humidity above a predetermined value the air is cooled and then reheated. The refrigeration system comprises a compressor 2 driven by an A.C. motor M controlled by a starter S, the discharge line of the compressor being connected to a condenser 3 and also through valve 11 and line 9 to one section 5b of the evaporator 5. The condenser 3 is connected through line 4 and the expansion valve 6 controlled by bulb 6<SP>1</SP> to the two sections 5a, 5b of the evaporator 5. The outlets of the evaporator sections 5a, 5b, are connected directly, and through valve 12, respectively, to the suction line 7. A fan 8 passes air to be conditioned through the evaporator. By means of a suitable electric circuit, when the thermostat T is above a predetermined temperature and regardless of humidity, electromagnetic valve 12 is open and electromagnetic valve 11 closed so that both sections 5a, 5b cool the incoming air. When the temperature, however, drops below a second predetermined temperature and the humidity as detected by humidistat H, is above a predetermined value, the valve 12 is closed, valve I is open and hot gaseous refrigerant is supplied to section 5b through line 9 so that air is first cooled in section 5a and reheated in section 5b. When both the humidity and temperature of the air are low the system is not in operation as the circuit to the starter coil is not closed.
Patent GB-658417-A (GB)
Title: Improvements in or relating to desolventizing of solvent-extracted particles
IPC: C11B1/10
Filed: 1948-03-25
Abstract: <PICT:0658417/III/1> Organic particles such as soybean flakes which have been extracted by hexane or the like are desolventized by passing them through a zone having a vapour temperature above the boiling point of the solvent maintained by superheating vapour evolved from the particles and returning it to the zone either co-currently or counter-currently with the particles but preferably partly in both.  Fig. 1 shows one form of apparatus in which the soybean flakes discharged from conveyers by casings 1 are carried through a desolventizer 10 by a screw conveyer 13d and meet solvent vapour withdrawn from the desolventizer at 16, 17 and pumped back through a superheater 20, part of the vapour flowing countercurrently and part co-currently with the particles.  The solvent vapours to be withdrawn from the system pass through the solvent-wetted particles in the front part of the desolventizer and then through a settling dome 11 above it, in which some of the dust carried by the vapour is allowed to settle.  The vapour then flows through a centrifugal dust separator 32 and condenser 36 to a decanting tank 44 where condensed water and solvent are separated.  The dried flakes pass through a duct 22 to a steam-jacketed deodorizer 23, from which the deodorized material is discharged to a conveyer belt 2.  In a modified form of apparatus, the flakes flow downwards by gravity through a vertical tower containing a stirrer and meet the superheated solvent vapour passing upwards.
Patent GB-1090086-A (GB)
Title: Securing the stack of rotor laminations of small electric motors to the associated shaft
Inventor: ROMBERG LOTHAR
IPC: H02K1/30
Filed: 1964-03-01
Abstract: 1,090,086. Securing cores of dynamo-electric machines. LICENTIA PATENT-VERWALTUNGS-G.m.b.H. March 1, 1966, No. 8968/66. Heading H2A. A stack of rotor laminations 2 is secured to shaft 1 passing through a central bore (3) and making axial line contact with the stack in at least three places, the assembly being cemented by a resinous insulating layer 6 covering the ends and the slots of the stack and applied by the whirl-sinter process. As shown, the shaft is round and the stack bore is triangular or polygonal, but the bore may be round and shaft polygonal or longitudinally fluted.
Patent GB-551933-A (GB)
Title: Improvements connected with massaging apparatus
IPC: A61H23/02
Filed: 1942-07-03
Abstract: 551,933. Massaging devices. ELECTRICAL COMPONENTS, Ltd., and SOMMER, W. July 3, 1942, No. 9191. [Class 81 (ii)] A massaging device comprises an insulating casing 1 in which is disposed an electromagnet 2 energised by a supply of alternating current. An applicator 4 screwing on the casing end holds a diaphragm 6 in place with freedom to vibrate and has a number of apertures of which can be partially masked by a rotatable ring 8 having other apertures 9. The diaphragm 6 may be vibrated by other means.
Patent GB-426682-A (GB)
Title: Improvements in or relating to paper bags, envelopes or the like containers
IPC: B65D27/00
Filed: 1934-03-24
Abstract: 426,682. Envelopes &c. CHADWICK & SONS, Ltd., J, and CHADWICK, F., Howley Works, Warrington. March 24, 1934, No. 9275. [Class 146 (ii)] [See also Group XVII] A paper &c. envelope, &c. particularly for laundry purposes, comprises a pair of envelopes 1, 2 formed from separate blanks, one being of larger superficial dimensions than the other, the smaller envelope, which may be of transparent greaseproof paper, being secured to the face of the larger envelope with its opening adjacent to that of the larger envelope and within an area overlapped by a closing flap 3 of the larger envelope when it is in its closed position. The flap 3 may be secured by gum 4 or by tongues which engage in slots in the envelope 2.
Patent GB-290418-A (GB)
Title: A mechanical appliance designed for the generation of power
IPC: F03G7/10
Filed: 1927-04-05
Abstract: 290,418. Dennett, W. S. April 5, 1927. Self-driving machines. -A machine for generating power comprises a pulley f from which hangs a weight which is to be raised, this pulley being supported by a string e which, it is stated, passes to a differential pulley c, d in such a way that the smaller of the two tensions in the string acts at the circumference of the smaller pulley d while the larger component acts at the circumference, of the larger pulley c thus producing a rotation which winds a pulley b up a string a and so raises the weight.
Patent GB-1025136-A (GB)
Title: Blowing columns for use in the production of blown asphaltic bitumen
IPC: C10C3/04
Filed: 1965-03-04
Abstract: The apparatus of the parent Specification is modified in that the external line through which blown asphalt passes from the column to the level-control vessel, is interconnected by means of an external pipe with the line joining the top of the vessel to the vapour space at the top of the column.  This construction obviates risk of clogging of the top of the internal line for the blown asphalt, and this line may be closed at its upper end. Further, the construction allows the control vessel to be placed at a level other than one which straddles the normal liquid level in the column (as is the case in the parent Specification); e.g. the vessel may be near the base of the column.
Patent GB-348306-A (GB)
Title: Improvements in or connected with the duplication of sound records
IPC: G11B5/86
Filed: 1930-03-25
Abstract: 348,306. Recording and reproducing sound optically ; duplicating optical sound records. BALTIC RADIO AKTIEBOLAG, Sundbyberg, Sweden. March 25, 1930, No. 9480. Convention date, April 25, 1929. [Class 40 (ii).] A sound record to be duplicated is transferred photographically to a metal tape which is then etched to form a clichÚ from which duplicated records are printed. The records may be printed on paper, and both sides of the paper may have printed thereon the same or different records. The Specification as open to inspection under Sect. 91 (3) (a) comprises also apparatus for recording sound on photographic film comprising a plate 2, Fig. 6 (Cancelled), supported by springs 3 and actuated so as to reciprocate in accordance with the sound waves by an electromagnet 4 having a winding 5 in the circuit of a microphone and amplifier. A beam of light passes through an aperture formed by an edge of a fixed plate 1 and an inclined edge on the plate 2 and falls upon a film moving at uniform speed. To record music played by an orchestra 6 .. 12, Fig. 4 (Cancelled), separate recorders are used which are actuated by microphones 13, 14, placed in different positions. The sounds are recorded on a common film to form a combined record such as shown in Fig. 5 (Cancelled), in which two sound traces are side by side. When reproducing from such a record, loud-speakers, one for each sound trace, are disposed in positions corresponding to the positions of the microphones 13, 14. This subject-matter does not appear in the Specification as accepted.
Patent GB-120031-A (GB)
Title: Improvements in or relating to Furnaces.
IPC: F23H11/18
Filed: 1918-06-10
Abstract: 120,031. Trefileries & Laminoirs du Havre Anciens Etablissements L. Weiller, Soc. Co-operative de Rugles & La Canalisation Electrique Reunis & Roudy, C. Sept. 29, 1917, [Convention date]. Addition to 108,269. Fire-bridges; grates.-An air-supplying firebridge as described in the parent Specification, consisting of circular rings 16 loosely mounted on a perforated blast tube 6, in connexion with an endless grate, is combined with an inclined partition wall 21 formed of movable elements, and with an ash-discharging door 32. Ashes are thus removed, and the excess of air from under the grate, from the air-supplying fire-bridge, and from the ash hopper, is prevented from passing to the boiler-zone.