baber/WOPTO huggingface dataset:
Patent GB-1138014-A (GB)
Title: Electrically operable clutch
Inventor: MARLOW RICHARD ZBIGNIEW
IPC: F16D27/105
Filed: 1967-06-30
Abstract: 1,138,014. Friction clutches. CREED & CO. Ltd. 30 June, 1967, No. 30284/67. Heading F2C. An electromagnetically engaged friction clutch comprises a helical coil spring 2 secured at one end to a continuously rotating input shaft 1 and at the other end to an armature 8 and a bearing ring 10 which is supported for rotation and axial movement relative to an output shaft 5, energization of a stationary electromagnet 9 attracting the armature 8 axially to cause the coil 2 to contract radially to grip the periphery of an enlarged portion 7 of the output shaft 5. The armature bears against a wear-resistant facing 12 on the electromagnet when the latter is energized. A bearing sleeve 3 supports the input shaft 1 and one end of the shaft 5. The clutch may be used in an electric typewriter or teleprinter drive.
Patent GB-1236077-A (GB)
Title: Expandable polymeric material
IPC: C08J9/00
Filed: 1968-06-25
Abstract: 1,236,077. Expandable polymers of monoalkenyl aromatic monomers. FARBWERKE HOECHST A.G. 25 June 1968 [14 Sept., 1967 (2)], No. 30321/68. Headings C3C and C3P. An expandable polymer comprises a polymer having a volatile blowing agent incorporated therein and which has been obtained by the polymerization of 55 to 100% by weight of one or more monoalkenyl aromatic monomers having the general formula in which Ar is a monovalent aromatic radical and R is a hydrogen atom or a methyl group, and from 0 to 45% by weight of one or more other ethylenically unsaturated monomers, in the presence of (a) from 0À001 to 0À045% by weight, based upon the weight of the monomers, of an organically disubstituted polysiloxane; and (b) at least 1% by weight, based upon the weight of the monomers, of a preformed expandable polymer in particulate form comprising a homopolymer or copolymer having a volatile blowing agent incorporated therein and being derived from the above monomers. In the examples, styrene is polymerized in aq. suspension in the presence of expandable polystyrene beads, dimethyl (or methyl octyl) polysiloxane, benzoyl peroxide, tert. butyl peracetate, polyvinyl alcohol and pentane, and the product is pre-expanded and then moulded with steam.
Patent GB-1170460-A (GB)
Title: Improvements in or relating to Vacuum Cleaners
IPC: A47L5/36
Filed: 1967-06-30
Abstract: 1,170,460. Vacuum cleaners. ELECTROLUX Ltd. 30 June, 1967 [22 Julv, 19661, No. 30336/67. Heading A4F. [Also in Division B1] A vacuum cleaner comprising a dust collector and a motor-fan unit 27 disposed in a casing 10 having suction and exhaust openings for air conveyed through the cleaner by the motor-fan unit is characterized in that the exhaust opening 21 is situated below the motor-fan unit and is arranged to direct air to a discharge location at the rear of the cleaner via a pas sage 22. A fine filter 29 which may comprise a frame 32 supporting one or more filter sheets 30, 31 may form part of a diffusing chamber 26 at the discharge location, the diffusing chamber 26 being in connection with the passage 22 which may comprise releasably connectible parts 23, 24, 25. The part 23 may be provided with an annular projection 39 which is held in sealing engagement with a groove 40 adjacent the exhaust opening when the part 23 is held by a bar 43 in engagement with the part 22 and the exhaust opening may comprise part of a bayonet joint. A rear portion of the casing 10 may house a cable reel 13 and support an electric operating switch 15.
Patent GB-1387825-A (GB)
Title: Conductivity cells
Inventor: HENNING M L
IPC: G01N27/07
Filed: 1971-06-29
Abstract: 1387825 Electro-chemical analysis PLESSEY CO Ltd 15 June 1972 [29 June 1971] 30371/71 Heading G1N The invention relates to electro-chemical conductivity cells which in use are immersed in the sample e.g. for pollution or oceanographic studies, and provides a cell with an opening at one end only, to avoid external leakage between the electrodes. As shown the cell comprises a transparent plastics cylinder with a disc electrode 5 at the closed end and a perforated disc electrode 6 at the other end with an insulating tube 7 passing therethrough. The electrode 6 may extend through the wall of the tube at several points 6a to avoid an external circuit between the electrode 5 and the outer end of the tube 7. Voltage measuring electtrodes 9, 10, are provided within the cell and constant current or constant voltage techniques may be used. The cell may be immersed e.g. in a vat, open end up or liquid pumped through the tube 7.
Patent GB-1011754-A (GB)
Title: Magnetic recorders
IPC: F16H15/46
Filed: 1962-08-09
Abstract: 1,011,754. Friction reverse gear; toothed gearing. W. HENTERICH. Aug. 9, 1962, No. 30485/62. Headings F2D and F2Q. In a driving mechanism for a tape or wire recorder comprising a friction wheel 7 disposed on a rockable lever 10 and driven by a friction roller 16, the friction wheel 7 is rocked into engagement with the appropriate spool 4 or 4<SP>1</SP> in dependence of the direction of rotation of the driving roller 16 and by the engagement of a pin 12, secured to the base-plate of the recorder, with an eccentric slot 11<SP>1</SP> in a disc 11 frictionally coupled to the friction wheel 7. The lever 10 is pivotally mounted on the spindle 16<SP>1</SP> of a reversible motor and carries a spindle 9 on which the disc 11 and friction wheel 7 are mounted. The wheel 7 has a rubber covering 8. Alternatively, a pin 12 may be carried on the disc 11 and engage a slot in the baseplate. In a modification, shown in Figs. 4 and 5, a fast rewind arrangement comprises a second friction wheel 14 formed integrally with a friction roller 16 and adapted to be selectively engaged with either spool 4 or 4<SP>1</SP> by lateral movement of driving spindle 16<SP>1</SP> within a slot 16a in the casing. Simultaneously, the lever 10 is raised a little to disengage friction roller 16 from friction wheel 7. In modifications, lateral movement of the driving spindle effects the disengagement. In another modification, shown in Fig. 10, a friction roller 38 is normally driven by the engagement of a rubber rim covering 33 with a spindle 31 of a motor 34. When the motor 34 is raised or a transmission mounting 35 is lowered, a friction wheel 36 on the spindle 31 engages a flange on a friction clutch 37, thereby causing reverse rotation of roller 38 at an increased speed. The axial movement may (Fig. 11, not shown), be replaced by a tilting movement about a stationary post. In a further modification, shown in Fig. 12, a friction wheel 36 drives on the inside of a rim 43<SP>1</SP> of a friction wheel 43 for normal operation, and for rapid rewind a member 44 is shifted to the right so that the friction wheel 36 drives on the hub portion 45 of friction wheel 43.
Patent GB-396675-A (GB)
Title: Improvements in fabric and method of treating the same
IPC: D06C29/00
Filed: 1931-11-04
Abstract: 396,675. Producing e mbroidered effects on fabrics. CADGENE, E., Lyons Piece Dye Works, 5th Avenue, Paterson, New York, U.S.A. Nov. 4, 1931, No. 30532. Convention date, June 23, 1931. Void [Published under Sect. 91 of the Acts]. [Class 42 (i).] Fabrics simulating eyelet embroidery are produced by depositing a decorative substance contiguous to portions of the fabric from which some or all the threads have been removed. The threads may be removed by perforation or chemical reagents. In the form shown in the Figure, a fabric woven with two kinds of yarn is treated in parts 10 with a chemical reagent for removing one kind of thread, leaving the others at those parts. Decorative material 11 is applied around the parts 10 and may be a composition of glue, cellulose or albumen solution, or varnish, which serves to prevent fraying of the material. Before the material 11 is dry, metal or other coloured powder, or short fibres of cotton, silk, rayon, or wool may be applied and the surplus shaken off. In some cases, the fabric is composed of two different fabrics united together by adhesive, a chemical reagent being employed to remove in parts one of the fabrics leaving the other visible at such parts around which the decorative composition is applied.
Patent GB-1320403-A (GB)
Title: Oscillator circuit for producing an oscillation frequency dependent upon an applied voltage
IPC: H03C3/08
Filed: 1970-06-24
Abstract: 1320403 Frequency modulation FUJITSU Ltd 24 June 1970 [11 July 1969] 30556/70 Heading H3R In an oscillator for producing a sinusoidal signal having a frequency dependent on an applied voltage, the oscillatory signal is fed from a resonant circuit LC via a 90 degree phase shifter 2, and a squaring circuit 3 to an amplitude modulator 4 in which its amplitude is modulated by the applied voltage and the resulting A.M. signal is then fed back to the oscillatory circuit to vary the oscillatory frequency.
Patent GB-1151927-A (GB)
Title: A process for the preparation of Polyacetal Resin
IPC: C08G2/00
Filed: 1966-07-08
Abstract: 1,151,927. Preparation and esterification of formaldehyde polymers. ASAHI KASEI KOGYO K.K. 8 July, 1966 [8 July, 1965; 4 April, 1966], No. 30795/66. Heading C3P. A homo- or copolymer slurry obtained by polymerizing formaldehyde containing 0À5 to 6% by weight of impurities, optionally with a copolymerizable compound, in an inert solvent in the presence of certain organic compounds of tetravalent tin is reacted with 20-500% by weight, based on the solid of said polymer, of an esterifying or etherifying agent in the presence of an esterification or etherification catalyst at a temperature of 120-180‹ C. The tin compounds are of the formulµ wherein R and R<SP>1</SP> are alkyl, cycloalkyl, aryl, aralkyl or alkenyl groups, or these groups substituted, directly or through an-O-, -S- or group, by a hydroxyl, alkyl, aryl, alkylol, haloalkyl or cyclic ether radical; R's and R<SP>1</SP> may be the same or different; one of the R's may be - OCOR<SP>1</SP> and any two of the R's and R<SP>1</SP> may form a ring together with Sn or Sn and -OCO; wherein R is as defined above, R<SP>2</SP> is as R<SP>1</SP>, one of the R's may be -AR<SP>2</SP>, A is -O- or -S-, and any two of the R's and R<SP>2</SP> may form a ring together with Sn or Sn and A, where R, R<SP>1</SP>, R<SP>2</SP> and A are as above, and any two of the R's, R<SP>1</SP> and R<SP>2</SP> may form a ring together with Sn, Sn and A or Sn and -OCO-, where R and A are as above, and any two of the R's may form a ring with Sn, wherein R and A are as above and the R's may form a ring together with Sn, or a polystandiol ester or polystandiol ether ester, or a dialkyl-tin bis (N-dialkylthiocarbamate). Typical catalysts are:-trimethyl-tin acetate, dimethyl-tin maleate, di-n-butyl-tin oxide, di-n-butyl-tin dibutyl thioglycolate, di-n-butyl-tin sulphide, bis-(tri-nbutyl)-tin oxide or sulphide, and di-n-butyl-tin diepoxy oleate. Suitable comonomers are:- unsaturated carboxylic acid amides, substituted aliphatic aldehydes, ketones and dialkyl ketenes. Specified esterifying or etherifying agents are:- methylal, trialkylorthoesters, e.g. triethylorthoformate, dialkoxyalkanes, e.g. dimethoxypropane, acetophenone dimethyl-ketal, and acetic anhydride. Specified esterifying or etherifying catalysts are:-alkali metal alcoholates, phenolates, or carboxylates, e.g. sodium acetate, and tertiary amines. Compositions may be formed containing, in the examples, various bisphenols and also (1) a polyamide of hexamethylene diamine, adipic acid, and sebacic acid, and diphenylamine, (2) dilaurylaminotriazole, (3) hydrazide ester polymer derived from adipic acid, caprolactone and hydrazine, (4) polyamide of hexamethylene diamine and adipic acid, (5) polyamide and diphenylamine, (6) polyaminotriazole prepared from sebacic acid dihydrazide, and (7) benzyl alcohol and tributylamine. Comparative examples are given using pyridine or tri-butyl-amine as catalysts (Example 5, Nos. 15 and 16). The exemplified polymers are formaldehyde homopolymers and copolymers with minor amounts of dimethylketene or acrylamide.
Patent GB-830995-A (GB)
Title: Improvements relating to floor polishers
IPC: A47L11/16
Filed: 1957-10-02
Abstract: 830,995. Floor polishing machines. HOOVER Ltd. Oct. 2, 1957 [Oct. 4, 1956], No. 30897/57. Class 138(1). A floor polisher 10 has at least one brush 23 provided with a socket 26 for detachably mounting it by a bayonet joint for rotation on a driving shaft 16 having a pin 21 in a slot 18 in its lower end, urged upwards away from the end by a spring or springs 22, the socket 26 receiving the shaft 16 in radial extensions or slots 27 for the passage of the end of the pins 21, cam ramps 30, 31, 32 and 33 on its under face extending circumferentially in each direction from each extension and terminating in a recessed seat 37 and stop 36, so that after the shaft has been inserted in the socket relative rotation in either direction will cause each end of the pin 21 to ride down one or other cam ramp stressing the spring, and then to snap into one of the recessed seats 37 so as to be ready to transmit a drive through the stops 36. The springs 22 are housed in bores 19, formed in a hub 17 of insulating material carried on the shaft 16, and closed by a cap 20, constituting one member of a snap fastener for holding a polishing pad. In the form shown there are two brushes 13, 14 driven in opposite directions. The polisher has a frame 11 surrounded by a combined bumper guard and skirt 15 of soft moulded material such as a soft thermoplastic beneath a hood 12, also functioning as a splash guard when the polisher is used as a floor scrubber.
Patent GB-1065153-A (GB)
Title: Polymorph of lincomycin hydrochloride
IPC: C07H15/16
Filed: 1964-08-04
Abstract: Polymorph II of lincomycin hydrochloride has a higher density than the normal polymorph I, is more suitable for encapsulating and has a characteristic X-ray diffraction pattern. It is obtained by adding acetone slowly with stirring to an aqueous solution of lincomycin hydrochloride at a temperature above 25 DEG  C. Lincomycin hydrochloride polymorph I is prepared in Specification 976,765.  A therapeutic composition in the form of a capsule contains lincomycin hydrochloride polymorph II.
Patent GB-1166905-A (GB)
Title: Two stage hydrogenation process
Inventor: MORITZ KARSTEN HERBERT
IPC: C08F8/04
Filed: 1967-07-05
Abstract: 1,166,905. Hydrogenating petroleum resins. ESSO RESEARCH & ENG. CO. 5 July, 1967, No. 30964/67. Heading C3P. The colour and colour stability of resins prepared by Friedel-Crafts polymerization of steam-cracked petroleum fractions are improved by hydrogenating the resin in a first stage at 350‹ to 450‹ F. and in a second stage at 400‹ to 500‹ F., the temperature differential between the first and second stages being 25‹ to 100‹ F. The hydrogenation may be effected continuously, in the presence of a catalyst, e.g. nickel, palladium, platinum, nickel sulphides, copper chromite and cobalt molybdate, optionally supported on alumina, pumice, clay or charcoal.
Patent GB-979728-A (GB)
Title: Dry compositions for explosive gels
IPC: C06B47/14
Filed: 1962-08-13
Abstract: A powder composition which forms a soft non-separating, highly viscous, cohesive explosive gel on addition of water has as its essential constituents 25-50% by weight of ammonium nitrate; 5 to 25% by weight of alkali metal nitrate; 20-40% by weight of a sensitizer explosive; 0.5 to 5% by weight of a polyacrylamide which has an apparent molecular weight of at least 100,000 and a free acid content of 0.1 to 8%; 0.05 to 0.5% by weight of a water soluble polvalent metal inorganic salt cross-linking agent for said polyacrylamide; and 0.6 to 2.5% by weight of a neutral liquid.  The polyacrylamide preferably contains at least 2000 acylamide units and has an apparent molecular weight between 100,000 and 3.5 million, preferably between one million and three million.  The weight ratio of ammonium nitrate to expolsive sensitizer is from 5:2 to 5:8; that of ammonium nitrate to alkali metal nitrate from 1:1 to 10:1 and that of the polyacrylamide to polyvalent metal salt is from 10:1 to 15:1.  The neutral liquid is preferably water but may be glycerine or glycol. The sensitizer explosives specified are smokeless powder, TNT and other known nitrated equivalents and cyclonite.  It is indicated that the particle size of the sensitizer has an effect on the amount necessary in a given composition.  The composition is prepared by adding to the metal salt cross-linking agent, e.g. aluminium sulphate, the remaining ingredients.  The cross-linking agent is first dissolved in a little liquid, the sensitizer and the alkali-metal nitrate added and mixed to a uniform consistency, meanwhile a dry blend of the ammonium nitrate and polyacrylamide is formed, and then added to the first portion of the mix, and the whole blended to a uniform admixture, mixing being stopped before any resegregation of the ingredients is initiated.  Specifications 825,367 and 979,729 are referred to.
Patent GB-1508365-A (GB)
Title: Image projection apparatus
IPC: G02B27/00
Filed: 1975-07-24
Abstract: 1508365 Optical projection systems SONY CORP 24 July 1975 [25 July 1974] 31023/75 Heading G2J The contrast of a coloured image on a cathode ray tube 3 projected on to a screen 2 is increased by uniformly illuminating the screen with coloured light. As shown, a green image produced by a cathode ray tube 3 is projected on to screen 2 by a lens 5, tube 3 also being illuminated by a red lamp 13 and/or a blue lamp 14. Thus for instance when red lamp 13 is energized, screen 2 will display a yellow image with a red background. In Figs.1 and 2 (not shown), the screen is directly illuminated with coloured light rather than via the faceplate 3a of the tube 3. Instead of a singlecolour tube 3 a multi-colour tube or a plurality of single-colour tubes can be used. A reflective or back-projection screen 2 may be used. Instead of a simple cathode ray tube an Eidophor (RTM) may be used.
Patent GB-838021-A (GB)
Title: Improvements in electrostatic loudspeakers
Inventor: CUTLER GEORGE DONALD
IPC: H04R31/00
Filed: 1956-10-11
Abstract: 838,021. Electrostatic loud-speakers. PYE Ltd. Oct. 11, 1957 [Oct. 11, 1956], No. 31045/56. Class 40 (4). In an electrostatic loud-speaker a sheet of polyethylene terephthalate is secured in a supporting frame and tensioned by heating the membrane and allowing it to cool to cause it to shrink in the frame. The useful range of temperatures to which the membrane may be heated is said to be from about 70 ‹ to about 80 ‹ C. and heating to the highest temperatures can reduce the membrane by 5%. Further reductions of the membrane can be achieved by successive reheatings and coolings. Specification 838,022 is referred to.
Patent GB-871302-A (GB)
Title: Halogen-containing film-forming agents
IPC: C08F236/04
Filed: 1959-09-11
Abstract: A halogen-containing film-forming agent comprises a halogenated or hydrohalogenated olefinically unsaturated polymer containing carboxyl groups, which is obtained by polymerizing at least one conjugated diolefine and at least one alpha, beta-unsaturated compound containing a carboxyl group and, if desired, other ethylenically unsaturated compounds.  Conjugated diolefines specified are butadiene, isoprene, dimethyl butadiene and chlorobutadiene. Carboxylic-group-containing monomers specified are acrylic, methacrylic, chloroacrylic, crotonic and sorbic acids and maleic, fumaric, and itaconic acids and their half-esters with alcohols and phenols such as methanol, ethanol, n-propanol, isopropanol, butanols, dodecanol, octadecanol, oleyl alcohol, benzyl alcohol, phenol, chlorophenol and cresol.  Other monomers specified are acrylonitrile, methacrylonitrile, esters of acrylic and methacrylic acids, styrene, alphamethyl styrene, vinyl toluene, vinylidene chloride, divinyl benzene and glycol dimethacrylate.  The halogenation and hydrohalogenation reactions may be carried out in solutions of the polymer in solvents such as benzene, benzine, chlorobenzene, chloroform, carbon tetrachloride and ethylene dichloride, or on the polymer in the form of a suspension in a gaseous medium, preferred agents for the reaction being chlorine and hydrochloric acid.  The carboxyl groups in the products may be converted to salt form in order to exert a stabilizing action.  The examples describe the aqueous emulsion copolymerization of the following monomers: (1) and (2) isoprene and methacrylic acid; (3) isoprene, butadiene and methacrylic acid; (4) butadiene, styrene and monobutyl maleate; (5) butadiene, styrene and monodecyl maleate, and (6) isoprene and monobutyl maleate.
Patent GB-446528-A (GB)
Title: Improvements in or relating to atomising, spraying, fumigating, deodorising, perfuming and like devices
IPC: A61L9/14
Filed: 1934-10-31
Abstract: 446,528. Disinfecting &c. apparatus. DRAKE, T. H., 66, Paget Street, Grangetown, and HYGIENIC INDUSTRIES, Ltd., Dowlais Arcade, Bute Docks, both in Cardiff. Oct. 31, 1934, No. 31242. [Class 81 (i)] [See also Groups XXIX and XII] An air-conditioning apparatus comprises a rotary fan to which conditioning liquid is fed from a receptacle 1 through a pipe 13, the supply being regulated by a cock operated by a vane 16. The receptacle 1 is mounted on bracket 21 adjustably mounted on an upright 22 secured to the fan frame. The vane 16 may be attached by lugs engaging the forked ends of a spindle forming the cock by which the liquid supply is regulated.
Patent GB-192831-A (GB)
Title: Improvement in chairs and the like
IPC: A47C17/207
Filed: 1921-11-23
Abstract: 192,831. Osborne, G. H. J. Nov. 23, 1921. Bedsteads convertible into seats; rocking seats; rests.-In a chair convertible into a bed of the kind having the seat and back hinged together, the back B is suported in the vertical position by a rod which passes through holes E in the back legs of the chair and in the back. When the rod is removed the back falls down and rests on the back rail of the base A, and the rod is then passed through holes F in the side rails of the base and in the seat C. A legrest D folds underneath the seat when not in use.
Patent GB-172022-A (GB)
Title: Improvements in or relating to film feeds for motion picture cameras
IPC: G03B1/22
Filed: 1921-11-23
Abstract: 172,022. Mladinich, F. Nov. 24, 1920, [Convention date]. Drawings to Specification. Kinematograph picture films are of half the usual width, and have a single row of perforations at one side.
Patent GB-505658-A (GB)
Title: Improvements in and relating to presses for tennis rackets, badminton and squash racquets and the like
IPC: A63B60/44
Filed: 1937-11-16
Abstract: 505,658. Racket presses. MOUSLEY & SONS, Ltd., F. A., and MOUSLEY, F. Nov. 16, 1937, No. 31424. [Class 132 (ii)] Relates to a racket press of the kind described in Specification 470,930, that is, of the kind comprising a box-like casing formed of two rigidly-connected flat members between which the racket is thrust, and consists in providing the press with a lining of springy sheet material, or with a number of helical or blade springs to create the necessary pressure when the racket is in position. As shown in Fig. 3, sheet rubber G faced with board-like members D is secured at H within the box-like casing B and holds the racket A when pressed into position. In a modification, Fig. 4, the sheet rubber is replaced by two blade springs C. The blade springs are attached to board-like members D connected by springy material E to form a separate unit as shown in Fig. 6. The racket is placed between the boards D and the assembly is thrust into the box-like casing. In a further modification, Fig. 2, helical springs Fare used.