baber/WOPTO huggingface dataset:
Patent GB-965963-A (GB)
Title: Acrylic methacrylic anhydride and polymers derived therefrom
IPC: C08F20/08
Filed: 1960-10-07
Abstract: The invention comprises acrylic methacrylic anhydride CH2=CHCO.O.CO.C(CH3)=CH2 and its production by reacting a methacrylyl halide with an alkali metal acrylate or an acrylyl halide with an alkali metal methacrylate, e.g. in an organic solvent. A polymerization inhibitor is preferably present.  The anhydride may be polymerized (see Division C3).ALSO:The invention comprises polymers of formula: <FORM:0965963/C3/1> and <FORM:0965963/C3/2> and salts of the latter.  The former polymers are obtained by polymerizing acrylic methacrylic anhydride (see Division C2), e.g. in the presence of heat, ultra-violet light or a free-radical catalyst.  Suitable solvents and catalysts are specified.  The latter polymers are obtained by hydrolysis of the former, e.g. by heating with water, or by aqueous alkaline hydrolysis to give a salt; acidification then gives the acid polymer.  The anhydride polymers can be moulded into sheets and articles by injection moulding.ALSO:Metallic articles can be coated by brushing with or dipping in a solution of poly(acrylicmethacrylic anhydride) (see Division C3) in a solvent such as dimethyl formamide or dimethyl sulphoxide, and heating the article to dry the coating.  The above polymer also adheres to glass.ALSO:Poly(acrylic methacrylic acid) of formula <FORM:0965963/D1-D2/1> (see Division C3) is useful in forming a warp size for nylon.
Patent GB-822541-A (GB)
Title: Improvements in or relating to door and like catches
IPC: E05C19/16
Filed: 1954-11-29
Abstract: 822,541. Magnetic fastenings. MILLAR, R. D. Feb. 27, 1956 [Nov. 29, 1954], No. 34530/54. Class 44 A magnetic catch for a door or the like comprises a magnet and a contact plate, one of which is mounted on, and engages around at least part of the periphery of a cylindrical bearing of rubber or similar resilient material so as to permit rocking towards and away from the other element. In the examole shown in Fig. 1, a horseshoe magnet 13 is mounted in a housing 12 by means of three rubber bushes 14, 15, 16 screwed to a side wall 11 of a cupboard. The contact plate 22 is screwed to a door 10, and the resilient mounting of the magnet 13 compensates for mis-alignment between the door 10 and the cupboard wall 11. In the example shown in Fig. 3 a bar magnet 33 is enclosed in a housing 32 in a door 30. Two pole pieces 34, 35 are secured in the housing 32 by means of screws 36 and project slightly through an opening in one of the walls of the housing. The contact plate comprises a metal block 39 disposed within a housing 37 mounted in a recess in the door jamb 31. The contact plate 39 has a limited amount of lateral and rocking movement about a rubber bush 41 and screw 42. Fig. 5 shows a modification in which the contact plate 52 has a central recess 53 and is secured to a door 50 by means of a screw 55 and flexible rubber grommet 54. A retaining member 56 provided with flanges (not shown) and spikes 58 prevents the contact plate 52 turning about the grommet 54.
Patent GB-363791-A (GB)
Title: Device for illuminating narrow working areas
IPC: F21V7/04
Filed: 1930-11-17
Abstract: 363,791. Reflectors; lamp supports. KÍRTING & MATHIESEN AKT.-GES., 45, Franz- Flemmingstrasse, Leutzsch, and LAUE, G., 1, Ludwig-Hupfeld-Strasse, both in Leipsic, Germany. Nov. 17, 1930, No. 34627. [Classes 75 (ii) and 75 (iii).] An illuminating device for long narrow working areas such as weaving machines comprises a dished reflector 1 having a light projecting opening of substantially oval shape and a dome or box-like housing 5 symmetrically disposed on the back for receiving the lamp socket. A side opening 7 may be provided for the lateral passage of light. Eyelets 6 are provided on the reflector for suspension members arranged to prevent twisting of thereflector. Fig. 5 shows a suspension device comprising a stirrup 8 having its top horizontal arm 9 pivoted in hooks 10 and its bottom arm 11 engaging spaced hooks 12 on the lamp. Fig. 7 shows a spanning wire 13 arranged above the machine 14 between supports 15 and slidably carrying the lamps by elongated attachment members 17 having hooks or clamps engaging the wire. The current leads 19 may be helically coiled around the spanning wire or held taut by pulleys and a counterweight. A stirrup such as 8 may be suspended from a small trolley running along the wire 13 and the pendant may be telescopic to adjust the height of each lamp. The suspension devices may be resilient and may allow of lateral swinging of the lamp.
Patent GB-365702-A (GB)
Title: Improved brake system for trailer vehicles
IPC: B60T11/04
Filed: 1930-11-18
Abstract: 365,702. Brake transmitting- mechanism. VINCENT, V., 24, Rue de MÔcon, Wontceau-les-Mines, Sa¶ne-et-Loire, France. Nov. 18, 1930, No. 34684. Convention date, Nov. 21, 1929. [Class 103 (i).] Transmitting-mechanism for the operation of the brakes of a trailer vehicle from the tractor which is such as to prevent relative movement of the vehicles from affecting the brakes when these are not applied while giving immediate operation of the brakes by the hand-lever or pedal, comprises on the tractor frame T, a double rack member D slidable in a fixed casing F and provided with an extension bar El connected to a hand-lever. The racks of the member D are arranged to engage a pair of pinions C geared to other pinions B which mesh with a rack bar A connected to the trailer brakes. The pinions rotate about fixed axes in the casing F and the pinions C are as shown in Fig. 3 normally not engaged with the racks D so that relative movement between the vehicles does not affect these racks, but when the member D is pulled by the hand-lever the pinions come into gear and transmit the pull to the bar A. The rack member D is operated by a pinion I<1>. engaging a rack on the bar E<1> and carrying an arm J<1> connected by rod j<4> to the hand-lever. The trailer brakes can also be applied by a pedal which applies the tractor brakes also and for this purpose a second rack member D<1> is arranged above the member D and is adapted to engage pinions C<1> secured to the spindles of the pinions C. The member D<1> has an extension rack bar E geared to a pinion I connected by a crank J and rod to the pedal. The connection of the rod to the pedal is by a pin-and-slot device which permits the application of pressure to the trailer brakes by the hand-lever additional to that applied by the pedal. The coupling of the bar A on the tractor to the trailer brakes comprises a rod A<1> pivoted to the bar and to a pair of plates R, R<1>. Fig. 6, connected by a bolt O<2> to a head O sliding between a pair of guide-plates P<1> fixed at the forward end of the trailer frame V. A rod S connects the head O to the trailer brakes. For the operation of the brakes of a train oi vehicles, each trailer vehicle carries at its rear end rack members D, A and pinions B, C the member D being connected by a rod S' to the head O while the member A is connected to the brakes on the following vehicle.
Patent GB-1005063-A (GB)
Title: Improvements in or relating to making asbestos products
IPC: C04B26/04
Filed: 1961-09-27
Abstract: A water-laid product comprises fibres of chrysotile asbestos, whose surfaces are reacted with a salt of an aromatic sulphonic acid and have deposited thereon an outer coating of a synthetic rubber.  The synthetic rubber may be a batadiene-styrene copolymer, a butadiene-acrylonitrile copolymer, a polychloroprene, polybutadiene, a polymer or copolymer of isoprene, chlorosulphonated polyethylene or a fluorine-containing synthetic rubber.  The sulphonic acid may be benzenesulphonic naphthalene-sulphonic, stilbene-sulphonic or diphenylsulphonic acids, or substitution products thereof, e.g. naphthalene-disulphonic acid, or acids with hydroxyl, amino, chloro, nitro, or lower alkyl (up to butyl) substituents in the aromatic nucleus, or with teterocyclic rings such as thiazole attached to the aromatic ring.  There may be one, two or more sulphonic acid groups, all directly attached to an aromatic ring. The salts may be the sodium, potassium, ammonium, alkaline-earth-metal or amine salt.  The product may be made by forming a slurry of the fibres in water, adding to the slurry a water-soluble salt of sulphonic acid, then adding a synthetic rubber latex to the slurry while agitating, and forming the slurry into the product by removing water, e.g. by sheeting on a Fourdrinier or cylinder paper-making machine or forming in a shaped mould.  The products may be used as gaskets, or as backings for plastics flooring sheets.
Patent GB-604499-A (GB)
Title: Improvements in and relating to electronic amplifiers
IPC: H03G3/22
Filed: 1945-12-21
Abstract: 604,499. Valve amplifying circuits. BYARD, S. A., and WRIGHT, C. S. Dec. 21, 1945, No. 34753. [Class 40 (v)] An electronic amplifier comprises an automatic volume control arrangement having a circuit, the time constant of which when charging is greater than when discharging so that gain reduction on increase of amplifier input is slow compared with the recovery of gain. The circuit may be used in echo-ranging systems where a signal of short duration may be masked by the presence of noise of variable intensity. The output of amplifier 1 in Fig. 1 is applied to a rectifying device 5 to produce a negative polarizing voltage which is applied via the condenser-resistance network 7, 6, to the amplifier to effect gain control. A rectifier 8 is connected across resistanec 6 so that the resistance in the discharging circuit of condenser 7 is less than that in the charging circuit. To avoid initial delay in the operation of gain control, a negative polarizing voltage may be provided by means of battery 9, the circuit including a switch 10 which is opened when an input is applied to the amplifier. Further modifications allow for a small resistance to be connected in series with rectifier 8, or for resistance 6 to be omitted, when the control becomes effective substantially only for decreases in input amplitude.- Specification 457,614 is referred to.
Patent GB-918076-A (GB)
Title: Apparatus for and method of demagnetizing an electromagnet
IPC: B23Q3/15
Filed: 1959-10-14
Abstract: 918,076. Control systems for demagnetizing electromagnets. LITTWIN, A. K. Oct. 14, 1959 [Oct. 17, 1958], No. 34793/59. Class 38 (4). Apparatus for demagnetizing an electromagnet such as a magnetic chuck comprises means for applying a series of magnetizations of alternately reversed polarities to the magnet, each magnetization being of lower degree than the preceding one, the degree of magnetization of any step controlling the degree of magnetizing of the succeeding step. Closure of switch 26 energizes a relay A to operate the A contacts, closure of contact A-2 causing the magnetic chuck 10 to be energized from a rectifier 34 over relay contacts C-1, C-2 and closed contact A-3. Contact A-4 is closed, causing thyratron 46 to become conductive to energize relay B having a self-maintaining contact B1. Thyratron 58 is also normally conductive. When demagnetization of the chuck 10 is required switch 26 is opened. This de-energizes relay A, opening contact A-2 to de-energize the chuck 10 and closing contact A-1 to energize relay C. Contacts C-1; C-2 open and contacts C-3, C-4, C-5, C-6 close. Relay D is thereby energized closing its self-maintaining contact D-1 and the chuck 10 is energized with reverse polarity from the rectifier 34 over closed contacts C-3, C-4. At this reversal the reactance of the chuck 10 causes a voltage to appear across resistor 70 which extinguishes thyratron 46. Relay B is thus de-energized, contact B-2 opens to deenergize relay C, contact C-6 opens to remove the supply from the rectifier 34 and the chuck 10 de-energized. Contact C7 closes to restore the supply to the rectifier 34 over closed contact D-2 whereby the chuck is again energized with its original polarity over closed contacts C-1, C-2 and, in this instance, variable resistor 86. This reversal of current in the chuck 10 causes a voltage to appear across the resistor 86 which extinguishes the thyratron 58 to de-energize relay D whereby contact D-2 opens to deenergize the chuck 10 and return the circuitry to its normal state. Each magnetization of the chuck is of opposite polarity and of lower degree than the preceding one and is governed by the values of resistors 70, 86. If further magnetization steps are required, further thyratron circuits may be added. In another embodiment different voltage values may be used in the respective demagnetizing steps instead of resistors 70, 86. A further embodiment shows the use of a single thyratron together with a stepping switch whilst in a fourth embodiment the thyratrons are replaced by a double wound relay.
Patent GB-411487-A (GB)
Title: Improvements in or relating to steam traps
IPC: F16T1/26
Filed: 1932-12-08
Abstract: 411,487. Steam traps. ARCHER, N., and JOHNSTON, J., Norton Hall, The Green, Norton-on-Tees, and IMPERIAL CHEMICAL INDUSTRIES, Ltd., Millbank, London. Dec. 8, 1932, No. 34847. [Class 64 (ii).] A steam trap of the kind in which a bucket 3 when filled with condensate from an inlet 2 falls to open a discharge valve with a spherical or conical closure member 4 seating on a cavity formed in an outlet plug 7 with a central discharge channel 5, has a perforated shroud comprising a number of straight channels 8 of small diameter connecting the cavity with the liquid reservoir and extending either parallel with the central discharge channel 5 or at such an angle thereto that the escaping water undergoes only a slight change of direction, the channels being of such small diameter that any grit in the water is stopped. The number of channels is such that the total cross-sectional area is considerably greater than that of the central discharge channel.
Patent GB-963139-A (GB)
Title: Apparatus for use in well bores
IPC: E21B33/12
Filed: 1961-09-28
Abstract: 963,139. Wells &c. W. E. RADLEY. (Baker Oil Tools Inc.). Sept. 28, 1961, No. 34885/61. Heading E1F. A well tool comprises means for conducting fluid into cylinder means to act on piston means, the conducting means including a valve prevented from opening by means which may be disrupted. The tool comprises upper and lower cylinders 26, 16 in which work interconnected pistons 30, 18, the cylinders and pistons being relatively movable to set a packer (not shown) depending from the tool. The fluid is borehole fluid which passes through ducts 42 to the valve 47, 45. As the valve member 47 has a part 53 of maximum diameter it is urged upwardly by the fluid against ignitable material 70 contained in a perforated retainer 65. The material which may comprise 55% by weight of magnesium, 36% by weight of sodium nitrate, and 9% by weight of a resin binder is electrically ignited to operate the tool to set the packer. As the material burns the fluid forces the member 47 upwardly to open the valve, the flow of fluid being retarded by grease in the annulus 61 causing the member to move slowly, and by initial passage through a groove 57 before the valve passage 44 is fully open. In a modification the material and retainer may be replaced by explosive material in a frangible container.
Patent GB-1150934-A (GB)
Title: Improvements in and relating to semiconductor devices.
IPC: H01L29/00
Filed: 1966-08-04
Abstract: 1,150,934. Semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORP. 4 Aug., 1966 [18 Aug., 1965], No. 34895/66. Heading H1K. A semi-conductor device comprises a N-type inclusion in one surface of a wafer which forms a PN junction with the bulk of the wafer material but is surrounded at the surface by an intrinsic region. A typical device is made in multiple from a P + type silicon substrate by first epitaxially growing a 2 ohm/cm N-type layer on it by reaction of silicon and phosphorus chlorides with hydrogen. An oxide mask is formed on this layer by conventional photoresist and etching techniques, using a mixture of ammonium and hydrogen fluorides to remove the oxide, and boron diffused through apertures in the masking to form P-type rings 60 (Fig. 2A) extending down to the substrate. Phosphorus is then diffused through further oxide masking to form N + zones 54 within these rings. After lapping and sand blasting the back face of the substrate and vapour coating with gold heat is applied to diffuse in the gold. During this process the N + zones 54 extend downwards to the substrate and the surrounding N portions 58 of the epitaxial layer are rendered intrinsic by the compensating action of the gold which also reduces the carrier lifetime elsewhere. Lead borosilicate glass is next applied from suspension in an organic solvent in a centrifuge in a multi-stage process and keyed to the oxide by heating. Apertures through the glass and oxide overlying the N + zones are formed by depositing chromium, etching holes in it using photoresist techniques, and then removing the underlying glass and oxide by etching in hydrofluoric acid. Gold or palladium 53 is then evaporated on the assembly. The photoresist used in forming the chromium mask which has so far been retained is removed, taking with it the overlying gold, and successive layers of chromium 66, copper 68, and gold 70 vapour deposited over the assembly. Finally lead-tin alloy 72 is deposited through holes in a mask in register with the N + zones and the wafer subdivided into individual elements. A transistor may be formed on the basis of the zone structure formed in the above process by utilizing the N + region as the base and forming a P-type emitter by diffusion into its surface.
Patent GB-1154752-A (GB)
Title: Method and apparatus for Sterilizing
IPC: A23L3/01
Filed: 1966-08-04
Abstract: 1,154,752. Sterilizing. GRAY INDUSTRIES, Inc. 4 Aug., 1966 [12 Aug., 1965], No. 35073/66. Heading A5G [Also in Division A2] A method of sterilizing comprises subjecting the material to be sterilized in a treating zone, while contained in a confined zone within the treating zone at least one wall of which confined zone is permeable to microwave energy, to microwave energy through a moving atmosphere of coolant gas under superatmospheric pressure, at least until the material is sterile, the moving atmosphere being in direct contact with walls of said confined zone but out of direct contact with the material undergoing treatment and being at a temperature below 60‹F. on its admission to the treating zone, and thereafter discontinuing the passage of microwave energy into the material in the confined zone. The microwaves are preferably of a frequency of 400-20,000 Mc/s. In one embodiment a sealed package supported on a polymethylmethacrylate platform is exposed to microwaves produced by magnetrons mounted vertically above the platform while gas under pressure is continuously circulated from a gas cooling chamber, where the air is chilled by conventional refrigeration equipment, into the sterilization chamber and thence back to the gas cooling chamber. At least the surface of the package facing the magnetrons is formed of microwave permeable material. In another embodiment, the sealed packages are conveyed on an endless belt through the sterilization chamber, entering and leaving through water seals. The coolant gas is preferably nitrogen or carbon dioxide, but other inert gases are also specified. The sterilization of many materials is exemplified and includes cigar wrapper leaves, cigar binder strips, boxed and individual whole cigars, loose tobacco, surgical instruments, rubber gloves, and various textile articles. Packaging materials exemplified are heat sealed polyethylene bags, capped glass bottles, and polyethylene terephthalate film pouches. Many other suitable materials, are specified.
Patent GB-1202242-A (GB)
Title: Novel monocarbamates of substituted 1,3-dihydroxypropanes and preparation thereof
Inventor: KULKA KURT
IPC: C07D319/06
Filed: 1967-08-01
Abstract: 1,202,242. Substituted 1,3-propanediol derivatives. FRITZSCHE DODGE & OLCOTT. 1 Aug., 1967, No. 35295/67. Heading C2C. The invention comprises novel monocarbamates or N-substituted monocarbamates (in which the substituent is an alkyl or an aryl radical) of a glycol of the general Formula I in which ring A is unsubstituted, substituted, or fused to a further ring to complete a naphthalene or methylenedioxy ring system and R<SP>1</SP> and R<SP>2</SP> are alkyl groups in which the total number of carbon atoms is from 2 to 7 and carboxylic acid monoesters thereof. The above novel compounds are prepared by one of the following methods: (1) Reacting a monohaloformate or monoacyl monohaloformate of the glycol of Formula I with ammonia or an amine of the formula R<SP>6</SP>NH 2 , wherein R<SP>6</SP> is an alkyl or aryl radical, and if desired, when the nionoacyl derivative is used, saponifying the acyl group in the product. (2) Reacting a glycol of Formula I with an isocyanate of the Formula R<SP>6</SP>NCO. (3) Reacting a monoalkyl- or monoarylcarbonate or cyclic carbonate of a glycol of the Formula I with ammonia or an amine of the formula R<SP>6</SP>NH 2 . (4) Reacting the monochloroformate of the primary hydroxyl group of the glycol of Formula I with ammonia or an amine of the formula R<SP>6</SP>NH 2 . Pharmaceutical compositions having tranquillizing activity and suitable for oral or parenteral administration, contain the above novel carbamates as active ingredients and pharmaceutical carriers.
Patent GB-173959-A (GB)
Title: Improvements relating to driving mechanism for hand-operated magneto generators
IPC: F21L13/08
Filed: 1920-12-15
Abstract: 173,959. Railing, A. H., and Angold, A. E. Dec. 15, 1920. Magnetos, driving.-In hand-operated magnetos for pocket lamps &c. of the kind described in Specification 157,536, the hand-lever e and the toothed segment f which drives the gearing are connected together by a pin f<1> serving as their pivot, and by a second pin or screw f<2> adapted to move in slots x in the casing. The lever is provided with a rib o which strengthens it and prevents its edges from touching the casing.
Patent GB-1085031-A (GB)
Title: Improvements in or relating to organic iron compounds
IPC: C07F15/02
Filed: 1964-08-31
Abstract: Organic iron complexes especially trisanthranilhydroxamato-iro (trivalent), [bis-chloro-l-leucine-hydroxamato-iron (trivalent)] acid and tris - nicotinhydroxamato - iron (trivalent) are prepared by reacting in a polar solvent a soluble ferrous or ferric salt with a hydroxyamic acid of the formula R.CONHOMe or a soluble salt thereof, wherein R is a heterocyclic radical or a substituted or unsubstituted hydrocarbon radical having up to 18 C atoms inclusive and containing 1, 2 or 3 amino groups and Me is H or a cation rendering the said hydroxamic acid soluble, and then optionally oxidizing the reaction product.  Potassium anthranilhydroxamate is prepared from methyl anthranilate and hydroxylamine in the presence of KOH. Pharmaceutical compositions suitable for use in iron therapy comprise the complexes of the invention and a carrier therefor.
Patent GB-1551080-A (GB)
Title: Electro-magnetic relays
IPC: H01H50/18
Filed: 1976-08-26
Abstract: The electromagnetic relay is based on a conventional comb relay but has a low profile height. It comprises an armature (10) which is in the form of a frame and is supported such that it can rotate about a side edge (11) of a core (12) in such a manner that the coil (13) is located in the opening which is formed by the frame shape of the armature. A part of the frame lifts a comb which consists of insulating material and, for its part, operates the springs or the spring sets of the relay, which are mounted along the frame. As a result of this design of the relay core and armature and the creation of large overlapping regions between the core and the armature, the wear on the relay is reduced and its life is extended. <IMAGE>