baber/WOPTO huggingface dataset:
Patent GB-1481619-A (GB)
Title: Sound reducing device for use in elevator
IPC: B66B11/02
Filed: 1974-12-12
Abstract: 1481619 Cage construction HITACHI Ltd 12 Dec 1974 [14 Dec 1973] 53862/74 Heading B8L An arrangement for reducing noise in an elevator cage 7 due to vibration and turbulence caused by air pressure variations as the cage passes floor levels H and a cage counterweight 8, comprises attaching a skirt 20 and guide plates 30, 31 to the cage 7 to render the pressure changes gradual. At the front of the cage 7, a projecting cage door sill 6 passes close to a floor door sill F1, F2, F3 &c., causing repeated sudden changes between high and low air pressures as the cage moves past the floors, this in turn causing vibration of the cage and cage and floor doors 5 and HD1, HD2 &c. When the skirt 20 depends from the sill 6 by a length longer than the height H of a floor less the height CH of the cage, it causes a gradual increase or decrease in air pressure on the underside of the cage and reduces the vibration. The guide plates 30, 31 extending upwardly and downwardly from the back 12 of the cage 7 also cause a gradual change in air pressure as the counterweight 8 passes thereby, thus reducing the turbulence and resulting vibration and noise. In a modification of the guide plates Fig. 7 (not shown), the plates are angled back over and under the cage, and in the modifications of Figs. 8, 9, 11 (not shown), the angled plates extend into a curved profile alongside the cage.
Patent GB-1362876-A (GB)
Title: Low speed synchronous motor
IPC: G04C15/00
Filed: 1971-11-22
Abstract: 1362876 Electric motors S KAKUBARI 22 Nov 1971 [21 Nov 1970 4 Aug 1971] 54073/71 Heading H2A A low speed synchronous motor comprises a rotor having a plurality of magnet poles and a stator having a plurality of equiangularly spaced poles, the numbers of rotor and stator poles not being equal, each stator pole comprising two sub-poles spaced apart in the direction of rotor rotation, there being a plurality of stabilized positions for the rotor in each of which at least one rotor pole is aligned with a stator sub-pole of opposite polarity and an even num. ber of rotor poles are repelled by respective other stator sub-poles, the repelling forces all cancelling out. The ratio of the number of stator poles to the number of rotor poles may be, e.g. 2 : 3, 2 : 5 or 3 : 5. The rotor may be a peripherally magnetized disc with or without salient poles, Figs. 16 and 20 respectively (both not shown), an axially magnetized magnet 15 disposed between plates 16, 17 having interdigitated teeth 18, 19, or a generally rectangular cross-section magnet, Fig. 10 (not shown), magnetized perpendicular to the rotor axis and having its opposite ends toothed to form a plurality of poles. The stator comprises magnetic material discs disposed on opposite sides of a coil 33. There may be two discs on each side of the coil, e.g. 27, 26 and 28, 29, one on each side having fingers forming main poles and the other, associated with a shading ring 30 or 31, having fingers forming shaded poles. Alternatively, there may be only one disc on each side of the coil, Fig. 16 (not shown), all of the fingers passing through apertures in a shading disc, those apertures associated with fingers which are to form main poles having slits open to the periphery of the shading disc. The rotor may be outside or inside the stator and the motor may have a casing of synthetic resin material.
Patent GB-1133490-A (GB)
Title: Injection moulding compositions from polyacetals of high molecular weight
Inventor: HECHELHAMMER WILHELM
IPC: C08K3/34
Filed: 1965-12-22
Abstract: 1,133,490. Silicate-polyoxymethylene compositions. FARBENFABRIKEN BAYER A.G. 22 Dec., 1965 [23 Dec., 1964], No. 54401/65. Heading C3P. An injection moulding composition comprises a polyoxymethylene and from 0À0001 to 0À5% by weight, based on the polyoxymethylene, of a silicate. The polyoxymethylene preferably has an intrinsic viscosity of from 0À5 to 1À2 measured in a 0À5% solution in butyrolactone at 150‹ C. and includes copolymers of trioxane with, e.g. dithiolane, oxthiolane, dioxolane or 5- to 7-membered heterocyclic nitrogen compounds, as well as their terminably esterified or etherified derivatives while the silicate may be in powder form with particles below 10 microns in diameter. The specified silicate is talcum. The composition may be prepared by distributing the silicate in the polyoxymethylene, melting this mixture and recovering it from the melt in granulated form.
Patent GB-1413296-A (GB)
Title: Hydraulic fluid
IPC: F01M/
Filed: 1972-11-28
Abstract: 1413296 Hydraulic fluids DOW CHEMICAL CO 28 Nov 1972 [29 Nov 1971] 54954/72 Heading C5F A non-aqueous hydraulic fluid comprises (wt. per cent for solids and vol. per cent for liquids): (a) 35-55% triethylene glycol monomethyl ether; (b) 0-15% diethylene glycol mono-(C 1 -C 4  alkyl) ether; (c) 0-6% tetraethylene glycol monomethyl ether; (d) 9-28% of the orthoborate ester of the mixture of (a), (b) and (c); (e) at least one of 0-20% triethylene glycol dimethyl ether, 0-20% tetraethylene glycol dimethyl ether, 0-20% tripropylene glycol dimethyl ether, 0-20% tripropylene glycol monomethyl ether pivalate, 15-40% of a formal of formula the total for (e) being 23-40%; (f) 0À5-4% antioxidants and corrosion inhibitors, the total of (a)-(f) being 80-100%. Specified (f) ingredients are: bisphenol A, 2,6-di-tert. -butyl-pcresol, benzotriazole, dibutylamine, potassium oleate, hydroquinone, diisopropanolamine, sodium pentaborate-propylene glycol condensate, phenothiazine, piperazine, N-methyl-morpholine, anthraquinone, ethyldiethanolamine, borax, potassium tetraborate, boric acid and ethylene urea.
Patent GB-554103-A (GB)
Abstract: 554,103. Pyrroles. ROGERS, M. A. T., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 17, 1941, No. 16278. [Class 2 (iii)] 5 - Nitroso - 2:4 - diarylpyrroles are prepared by treating 2:4-diarylpyrroles, in which the 5 position is unsubstituted, with nitrous acid or with a functional derivative thereof. Examples give the preparation of 2:4-diphenyl-, 2- phenyl - 4 - (o - chlorophenyl) -, and 2 - phenyl - 4 - (p - methoxyphenyl) - 5 - nitrosopyrrole and a sulphonic acid of 2:4 - diphenyl - 5 - nitro - sopyrrole, from the corresponding 2:4-diarylpyrroles. Other pyrroles which may be used are 2 - (p - methoxyphenyl) - 4 - phenyl -, 2 - (m - hydroxyphenyl) - 4 - phenyl -, 2 - (o - chlorophenyl) - 4 - phenyl -, 2 - (p - acetyl - amino - phenyl) - 4 - phenyl -, 2 - α - naphthyl - 4 - phenyl -, 2 - phenyl - 4 - # - naphthyl -, 2:3:4 - triphenyl -, 3 - benzoylamino - 2:4 - diphenyl -, 3 - acetylamino - 2:4 - diphenyl -, 3 - benzoylamino - 2:4 - di - p - tolyl - and 3 - acetoacetyl - 2:4 - diphenyl - pyrrole and their sulphonic acids. Specification 554,102 is referred to.
Patent GB-1330873-A (GB)
Title: Production of reaction products of water soluble guaternary  ammonium salts with anionic materials
IPC: A61K8/41
Filed: 1970-11-24
Abstract: 1330873 Quaternary ammonium compounds H S MANNHEIMER 24 Nov 1970 [27 March 1970] 55939/70 Heading C2C [Also in Division C5] The invention comprises the water-soluble reaction products of a compound with E-A m -Z-M, in which R is a C 8-24  hydrocarbon radical, saturated or with 1-3 ethylenic double bonds, R 1 , R 2  and R 3  are C 2-4  alkylene, X is COO or CONR 4 , R 4  is hydrogen or C 1-4  alkyl, Y is Br or Cl, n is 0 or 1, E is a C 6-18  hydrocarbon radical which is alkyl, olefinic or (C 6-12 -alkyl)-phenyl, A is (OR 1 ) 1-12 , -CONR 5 R 6 - or -CONR 1 R 7 -, R 5  is hydrogen or methyl, R 6  is -CH 2 -, -CH 2 CH 2 - or -CH(CH 3 )-; when R 5  is methyl, R 6  is -CH 2 -; when R 5  is hydrogen, R 6  is -CH 2 CH 2 - or -CH(CH 3 )-; M is hydrogen, sodium, potassium or ammonium; R, is hydrogen, C 1-4  alkyl or C 2-4  alkylol; Z is SO 3 , OSO 3  or COO; m is 0 or 1; when m is 0 and Z is SO 3 , E is alkyl or alkylphenyl; when m is 0 and Z is OSO 3 , E is alkyl or olefinic; when m is 1 and Z is COO, A is CONR 5 R 6 ; when m is 1 and Z is OSO 3 , A is (OR 1 ) 1-12  or CONR 1 R 7 ; and when m is 1 and Z is SO 3 , A is CONR 1 R 7 . These products are produced by reacting the components in aqueous solution in a ratio of from 1 : 20 to 1 : 1, the ratio of water to combined weight of reactants being from 30 : 70 to 99À8 : 0À2. Compounds of the first formula above are prepared by reacting a compound with YC 2 H 4 OH in an amount of water at least equal to the combined weight of the reactants.
Patent GB-1275586-A (GB)
Title: Saw blade for cutting and grinding glass
IPC: B28D1/12
Filed: 1969-11-19
Abstract: 1275586 Abrasive tools CORNING GLASS WORKS 19 Nov 1969 [19 Nov 1968] 56623/69 Heading B3D [Also in Division C1] A blade, which may be circular as shown or straight, for cutting and grinding the cut edge of glass, particularly rods, tubes or plates, comprises a blade body 10 with a cutting edge 14 having at least its surface of an abrasive material and two peripheral side portions 16, 18 adjacent the edge 14 with the surface of at least one portion of an abrasive material, the cutting edge 14 and at least the one side portion 16 and/or 18 being of sinusoidal configuration when viewed in cross-section in the plane of the blade which becomes progressively flatter towards the centre of the blade body. Preferably the whole blade is formed from silicon carbide.
Patent GB-1373136-A (GB)
Title: Anticondensation device for radiation sensor
IPC: H01L31/024
Filed: 1971-12-08
Abstract: 1373136 Photo-detector mist prevention RCA CORPORATION 8 Dec 1971 [24 Dec 1970] 56971/71 Heading G1A In a radiation detector for a cold environment including a volatile material, condensation of  such material on cooled operative members such as windows 20, 26 is avoided by a passageway 24, Fig. 1, the width of which is less than the mean free path of the molecules of said volatile material. Infrared radiation passes from an object to a detector 22 which may be a cadmiumteluride alloy photo-conductor, via germanium IR filter windows 20, 26, and moisture particles 28 in the ambient are deposited as ice on portions 14a, 14b, which are cooled to 95K by means not shown. The passage is formed by two sleeves 11, 12 which are slidable longitudinally relative to each other, and are gold plated to reduce emissivity. A test chamber, in which the detector is subjected to operating conditions, together with a method of purging a detector of volatile vapours is described with reference to Fig.2 (not shown).
Patent GB-1272857-A (GB)
Title: Method of producing phenolformaldehyde expanded plastics
Inventor: VALGIN VASILY DMITRIEVICH
IPC: C08J9/08
Filed: 1969-11-21
Abstract: 1,272,857. Expanded phenol-formaldehyde polymers. VLADIMIRSKY NAUCHNOISSLEDOVATELSKY INSTITUT SINTETICHESKIKH SMOL. 21 Nov.., 1969 [21 Nov., 1968], No. 57025/69. Headings C3C and C3R. Expanded phenol -formaldehyde polymers are made by mixing a liquid A-stage phenol-formaldehyde resin with a condensation product of formaldehyde, an aromatic monosulphonic acid and an amine, cyanamide, amide or nitrile. The mixture may also contain a volatile organic liquid, e.g. a chlorofluorocarbon, as expanding agent and a surfactant, e.g. an adduct of ethylene oxide and an alkylphenol. In the examples, the above condensation product was derived from (a) formaldehyde, (b) p-phenolsulphonic acid, p-toluenesulphonic acid or benzenesulphonic acid, and (c) m-phenylenediamine, butylamine, cyclohexylamine, benzidine, oxamide, N,N-dimethylformamide, acrylonitrile, dicyandiamide or aniline.
Patent GB-1245298-A (GB)
Title: Treatment of titanium dioxide pigment
IPC: C09C1/36
Filed: 1968-12-03
Abstract: 1,245,298. Coated nitrile TiO 2  pigment. NATIONAL LEAD CO. 3 Dec., 1968 [26 Dec., 1967], No. 57400/68. Heading C1N. A rutile TiO 2  pigment bears successive coatings of oxides of titanium and/or aluminium, at least one coating being of titanium and aluminium oxides, the first coating being calcined at 450-800 C. and thus at least partially dehydrated, the second coating being dried at less than 250 C. The pigment is made by adding water-soluble salts, e.g. titanyl sulphate and/or aluminium sulphate, to an aqueous slurry of TiO 2 , neutralizing to precipitate hydrous oxides, filtering, calcining, milling, repeating the hydrous oxide deposition, filtering, drying and milling. The TiO 2  may be wet-milled and classified before coating. The single-coated product may be milled in two stages, wet and dry, and classified before the second coating is applied. The total weight of 'hydrous metal oxide deposited may be up to 2% TiO 2  and 2-8% Al 2 O 3  by wt. of TiO 2 . Polymer-based .paints containing the coated TiO 2  show improved optical properties and durability.
Patent GB-1190180-A (GB)
Title: Improvements in or relating to Mass Flow Rate Measuring Apparatus
Inventor: RUSNAK JEROME J
IPC: G01F1/78
Filed: 1968-12-04
Abstract: 1,190,180. Measuring mass flow rate of fluids. HONEYWELL Inc. Dec. 4, 1968 [Jan. 2, 1968], No.57664/68. Heading G1N. Apparatus for measuring the mass flow rate of a fluid through a conduit 10 comprises a sampling tube 16 with a butterfly valve 22 at the downstream end which is periodically closed by a solenoid 24 energized by a pulse 26 so that a shock wave 40 is generated inside the tube 16 to produce a pressure difference at posts 28, 30 located near the upstream and downstream ends of tube 16 respectively, the difference in pressure, measured at 32 and indicated at 46, being indicative of the mass flow rate of the fluid. The differential pressure signal is fed through a filter 38 and modified in accordance with the relationship between a reference temperature T 1  and the temperature T 2  of the fluid, measured at 42.
Patent GB-1451204-A (GB)
Title: Moulding of plastics cutlery
IPC: B29C69/00
Filed: 1973-12-14
Abstract: 1451204 Thermoforming cutlery; knives DRG (PACKAGING) Ltd 12 March 1975 [14 Dec 1973] 58109/73 Headings B5A and B4B [Also in Division A4] Cutlery is formed from a sheet of plastics material by simultaneously thermoforming a foodmanipulating end 9 and an elongate handle 2 reinforced by having a portion thermoformed out of the plane of the sheet along at least part of its length. A flange 3 is formed on the back of a knife at 90 degrees (Figs. 1-3, not shown) or angled at less than 90 degrees and thereafter returning at 90 degrees across the plane of the knife, Figs. 5 and 7, by vacuum forming on a mould and then trimming along cut lines 7 and 8. The blade of the knife is at an angle to the face of the trimming die 14 so that a tapered edge 15 is formed. The flange 3 may be bevelled at each end or may taper towards the blade end. Spoons and forks are formed with upturned or downturned flanges extending partly or all around a flat handle 2 (Figs. 12 and 14). Alternatively a fork handle may be curved or V-shaped in cross-section, or may be formed with a reinforcing channel 17 extending into the tined end portion 9.
Patent GB-1315988-A (GB)
Title: Cross-coupled differential amplifier
Inventor: TOMCZAK J
IPC: H03F3/72
Filed: 1970-12-11
Abstract: 1315988 Gated amplifiers; circuits employing bi-stable magnetic elements INTERNATIONAL BUSINESS MACHINES CORP 11 Dec 1970 [31 Dec 1969] 58906/70 Headings H3B and H3T A differential amplifier circuit comprises a matched pair of differential amplifiers 22, 22<SP>1</SP> having their inputs 12, 14 cross-coupled and sharing a common pair of output terminals 24, 26, a biasing arrangement V 1 (+), V 2 (-) to bias amplifiers 22, 22<SP>1</SP> into conduction so that all differential and common mode input signals are normally rejected by the circuit and a switching arrangement 44, 44<SP>1</SP> selectively operable to turn off either one of 22 or 22<SP>1</SP> so that an input signal, e.g. a bipolar sense signal from thin magnetic films or magnetic cores, is amplified by the other amplifier to produce a differential output signal at 24, 26, the polarity of which may be adjusted to be independent of input polarity by selectively controlling 44 or 441. The load 28 may be a threshold detection circuit comprising a latch 50, set when a threshold is exceeded. The circuit offers a high degree of noise rejection for even if the non-conducting amplifier is triggered by noise signals, no change in output results as both 22, 22<SP>1</SP> will be conducting.
Patent GB-1345348-A (GB)
Title: Synchronizing arrangement for changespeed transmissions
IPC: F16D23/06
Filed: 1971-12-20
Abstract: 1345348 Positive clutches DR ING heF PORSCHE AG 20 Dec 1971 [18 Dec 1970] 58984/71 Heading F2C In a split-ring synchronized positive clutch for a change-speed gear, the synchronizing ring 11 is circumferentially tapered towards its ends 17, 18 to provide a ring which, in its expanded condition, has a cylindrical inner surface and a part oval outer surface. The non- oval part of the outer surface, in the expanded condition of the ring, is limited to an included angle of between 160-180 degrees. When the synchronizing ring is contracted to permit clutch engagement both the inner and outer surfaces assume an oval shape. The inner surface of the synchronizing ring is grooved at 21 and servo-assistance is provided by the usual blocking bands (22, 23) acting between fixed and movable abutments (24, 20).
Patent GB-1412249-A (GB)
Title: Copying method and apparatus
IPC: G03G15/00
Filed: 1972-12-22
Abstract: 1412249 Electro-photographic copying FUJI XEROX CO Ltd 22 Dec 1972 [27 Dec 1971] 59557/72 Heading G2H In a method of electro-photographic copying wherein a photo-conductive surface 1 is given an initial overall charge by a corotron 2, is exposed to an original at a station 3 and is developed at a station 4, means are provided between the corotron 2 and the developing station for eliminating any charge on the surface 1 in the absence of copy paper approaching a transfer station 5. By this means no developer becomes adhered to the surface 1 when there is no copy paper to receive it. The charge eliminating means may be light derived from a lamp 9 via a mirror 10. A solenoid operated shutter prevents the light reaching the surface when copy paper is approaching the transfer station. Lamp 9 also provides light for discharging the surface prior to the application of the initial overall charge. A pre-cleaning corotron and a cleaning brush 7 may be provided.
Patent GB-1299240-A (GB)
Title: Garbage compaction unit
IPC: B30B9/30
Filed: 1970-12-16
Abstract: 1299240 Compressing garbage INTERNATIONAL DYNETICS CORP 16 Dec 1970 [29 Dec 1969] 59761/70 Heading B8C A garbage compaction unitcomprises a cabinet 10, a receptacle 28 for receiving garbage therein, an hydraulic ram assembly mounted within the cabinet having piston means 58 movable into and out of the receptacle 28, conduit means 36, 42 connecting the ram assembly to a source of water and to a drain for the water and valve means for selectively flowing water into and out of the ram assembly to extend or retract the piston means 58 with regard to the receptacle 28. As shown, the ram assembly comprises the piston means 58 slidable against a tension spring 74 into contact with the garbage in the receptacle by hydraulic pressure admitted through conduit 36 to an expandable bellows 68 attached to the means 58 and to a support 22. The receptacle is supported on a door 24 having a fastener 86 which is interconnected through linkage 90, 92, 96 with a similar fastener on a door 26 enclosing the valve means, such that both doors cannot be opened at the same time. The receptacle stands on a resilient block 82. In other arrangement Figs. 7 and 8 (not shown) the door 24 is respectively vertically hinged and is curved and slidable within the receptacle compartment. The garbage may be enclosed in a plastic bag within the receptacle.
Patent GB-1442780-A (GB)
Title: Process for the manufacture of ammonium polyphosphate
IPC: C01B25/40
Filed: 1973-12-28
Abstract: 1442780 Ammonium polyphosphates VEBACHEMIE AG 28 Dec 1973 [30 Dec 1972] 60103/73 Heading C1A In a process for the continuous production of ammonium polyphosphates by the reaction of gaseous ammonia and aqeuous phosphoric acid at elevated temperature in a single stage or multiple stage falling film reactor, aqueous wet process phosphoric acid is introduced into the top of the reactor and gaseous ammonia, optionally with a diluting gas, is introduced into the bottom of the reactor, the amount of ammonia introduced being a large excess over the amount corresponding to a molar ratio NH 3  : P 2 O 5  from 0À5 to 4À5 in the intended end product, the reaction temperature being between 120‹ and 260‹ C., the pH of the resulting ammonium polyphosphate solutions when diluted to a solution of 10% by weight being between 2À5 and 6À0, and the heat of neutralization of the reaction being utilized for the evaporation of water to concentrate the ammonium polyphosphate product and to condense the phosphate to polyphosphate in the reactor, and to heat thermal fluids which are used to regulate the temperature of the reaction, the thermal fluids possibly being preheated in a heat exchanger intermediate two reactor stages of a multi-stage reactor by condensing vapour from the gaseous phase. Condensation promoters such as urea may be present. When a multiple stage reactor is used, the vapour passing from one stage is preferably treated to condense out water vapour, and the remaining gas is preheated and passed to the next stage. Preferred products contain 12-16% by weight of ammonium N and 54-70% by weight of P 2 O 5 .
Patent GB-1415320-A (GB)
Title: Variable resistors
IPC: H01C10/14
Filed: 1972-12-30
Abstract: 1415320 Variable resistors MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 30 Dec 1972 60274/72 Heading HIS A variable resistor for use, e.g. as a balance control in a quadraphonic system, comprises an electrically insulating casing 1, semi-spherical in shape and having, formed on its inner wall surface a cup-shaped resistor 3, a top cover 5, an operating shaft 11 of conducting material mounted in the centre hole 10, of a conducting ball member 9 which is fitted in a partially spherical bearing 6, 6a, which has flanges 8 to restrict movement of shaft 11, which contacts the resistor 3 by means of spring 12 loaded contact element 14, at a fixed normal angle. Terminal paths 4 are also formed on the inner wall surface, and extend between cover 5 and body 1 to terminals (17a-17d), which are secured by rivets (16a-16d, Fig. 1, not shown), passing through cover 5 and flanges 2. A common conducting path is formed from resistor 3 through contact 14 shaft 11, ball member 9, ball contact 22, conductive spring 21, terminal path 20 and out to terminal 18, which is secured by rivet 16e. Flange 6 is secured to cover 5 by rivets 7a, 7b &c. The resistance between each of the terminals 17 and the common terminal 18 is varied by the position of the operating shaft on the resistor element 3.
Patent GB-1334060-A (GB)
Title: Method of producing a phthalocyanine photoconductive layer
IPC: G03G5/06
Filed: 1970-12-21
Abstract: 1334060 Electro-photographic material XEROX CORP 21 Dec 1970 [2 Jan 1970] 60557/70 Headings G2C and C17E An electro-photographic material is prepared by adding alpha, alpha and beta or alpha and X-form phthalocyanine and a binder to a liquid medium and "sand" milling the mixture until at least a portion of the alpha phthalocyanine is converted to beta phthalocyanine. By "sand" milling is meant milling with small beads including sand, glass beads and ceramic beads. In an embodiment alpha metal-free phthalocyanine, a silicone resin, a chlorinated resinous paraffin and an acrylic resin in toluene are milled in sand at 120-180‹F. for 0.2 to 2 hours. The milled composition is coated on a support of paper, plastics, Al or brass to form an electro-photographic element. Comparative examples are given wherein the milling medium is larger diameter steel balls or flint pebbles.