baber/WOPTO huggingface dataset:
Patent GB-1058631-A (GB)
Title: Improvements in or relating to polyacrylic resins
Inventor: ROBINSON PETER VERNON
IPC: C08F20/58
Filed: 1962-07-31
Abstract: In the preparation of polyacrylic resins a mixture of an acrylamide and one or more ethylenically unsaturated monomers with a C1- 8 aliphatic monoaldehyde is heated at a pH of at least 6 under conditions such as to inhibit polymerization to form an N-alkylolated acrylamide, which is subsequently copolymerized in situ with the said unsaturated monomers.  The resulting alkylolated acrylamide is preferably at least partially etherified prior to the copolymerization reaction by reaction with a C1- 8 aliphatic alcohol. The amounts of polymerization inhibitor normally present in the unsaturated starting materials may be sufficient to provide the required polymerization inhibiting conditions during the alkylolation reaction.ALSO:Polyacrylic resins are prepared by heating a mixture of an acrylamide and one or more ethylenically unsaturated monomers with a C1- 8 aliphatic aldehyde at a pH of at least 6 under conditions such as to inhibit polymerization to form an N-alkylolated acrylamide which is subsequently copolymerized in situ with the said unsaturated monomers.  The resulting alkylolated acrylamide is preferably at least partially etherified prior to the copolymerization reaction by reaction with a C1- 8 aliphatic alcohol.  The amounts of polymerization inhibitor normally present in the unsaturated starting materials may be sufficient to provide the required polymerization inhibiting conditions during the alkylolation reaction.  In examples acrylamide is methylolated with formaldehyde in presence of n-butanol, xylene, paraformaldehyde, styrene, and optionally ethyl acrylate, and optional added amounts of hydroquinone, and the product subjected to copolymerization conditions after further addition of lauryl mercaptan, methacrylic acid, cumene hydroperoxide and butanol. The products are admixed with epoxide resins such as that formed by reacting epichlorhydrin with para, para1-dihydroxydiphenyl methane to form enamels.
Patent GB-1495182-A (GB)
Title: Mowing implement
IPC: A01D34/66
Filed: 1975-07-14
Abstract: 1495182 Rotary mower cutter supports MULTINORM BV 14 July 1975 [22 July 1974] 29412/75 Heading A1F A mowing implement comprises a housing 3 extending transversely to the direction of movement 2, and a plurality of mowing members 7 rotatably journalled on shafts 28 driven by members of a driving gear in said housing, each mowing member comprising two cutter supports 4, each with a cutter 5 and each pivoted by means of ears 36 on a horizontal shaft 35 so that the cutter supports 4 are deflected upwardly when they hit stones. Stops 41 on shafts 28 limit the downward movement of supports 4. The supports are spring steel sheet bent to give upper 37 and lower 38 sheets can be flexed apart to mount cutters 5 on pivot pins 32 welded to the upper sheet. A crop separator for directing crop towards a conventional swath board, is arranged in the mowing member furthest from the tractor in use and comprises two upright pins 25 (Fig. 4) as extensions of fastening pins 39, or a plate shaped member parallel to shaft 35 and secured to shaft 28.
Patent GB-1387341-A (GB)
Title: Laser mode locking and coupling method and apparatus
IPC: G02F1/03
Filed: 1972-06-23
Abstract: 1387341 Modulating light NORTHROP CORP 23 June 1972 [27 Oct 1971] 29520/72 Heading H4F [Also in Division H1] An electro-optic crystal 13, Fig. 4, in a laser resonator is provided with two pairs of orthogonal electrodes 23, 25 and 27, 29, one electrode pair 27, 29 being connected to an A.C. source 36 which mode-locks the generated laser radiation, while the other electrode pair 23, 25 is connected to a D.C. pulse generator 38 enabling pulses of mode-locked laser radiation to be coupled out of the resonator when the generator is operative. Fig. 3 shows the electro-optic crystal 13, which may be GaAs, in a folded resonator formed by mirrors M1-M6, the laser active medium consisting of 4À5% CO 2 , 12À0% N 2  and 83À5% He contained in a gas tube 31. The generated laser radiation is plane polarized by a Brewster-angled tube window 33, and is phase modulated at a frequency such as to induce mode locking by the A.C. signal applied to electrodes 27, 29. The application of a D.C. pulse to the electrodes 23, 25 converts the plane polarized radiation to elliptical polarization, so that a radiation output component may be coupled out of the resonator by a polarization analyser 35 in the form of a Brewster-angled germanium flat. This output is detected by a GeAu liquid nitrogen-cooled detector 37 and the laser operation is monitored by a detector 30 coupled to a partially transmitting mirror M6. In a modification, Fig. 5, the analyser 35 is replaced by a crystal 59 optically bonded to the electro-optic crystal 41, the crystal 59 having a Brewster-angled output surface 57. The crystal 41 is formed so that one end 49 is inclined at the Brewster angle to the laser radiation 51 within the resonator, while the other end S3 carries a resonator mirror 55. A further electro-optic material suitable for use with visible radiation is LiNbO 3 .
Patent GB-1125013-A (GB)
Title: Improvements in or relating to methods of manufacturing variable capacity diodes
IPC: H01L21/00
Filed: 1966-06-30
Abstract: 1,125,013. Semi-conductor devices. FUJITSU Ltd. 30 June. 1966 [30 June, 1965], No. 29526/66. Heading H1K. A voltage variable capacitance diode with a hyper-abrupt junction is produced by diffusing bismuth into an N-type silicon wafer to produce an N-type impurity distribution with a surface concentration of 1 to 8 x 10<SP>17</SP> atoms cm.<SP>-3</SP>, and then diffusing boron into the surface to produce a shallow P-type layer with a surface concentration of at least 10<SP>19</SP>atoms cm.<SP>-3</SP>.
Patent GB-152666-A (GB)
Title: An improved brake-operating apparatus
IPC: B61H13/32
Filed: 1920-10-19
Abstract: 152,666. Scheuer, A., and Scheuer, H. Feb. 20, 1919, [Convention date]. Force-transmitting mechanism.-Relates to devices by which vehicle brake blocks can be applied to the wheels through mechanism of low powerratio whereupon tightening of the brake rigging is effected through mechanism of high power-ratio. Fig. 1 shows in plan one arrangement in which the brake-rod 11 is connected to the brake cvlinder rod 1 through levers 7, 2, and link 6. The lever 7 pivoted at 8 to the vehicle carries a swivelling sleeve 10 slidable on the rod 11 against an initially-stressed spring 13. The lever 2 carries pins 4 sliding in guides on the vehicle, and in the first part of the brake-operating movement turns on a fixed fulcrum 3 at one end. When the blocks contact with the wheels any further brake-operating movement causes the sleeve 10 to compress the spring 13. A stop 9 on the sleeve is thus moved away from a shoulder 16 on a toothed cam 15 pivoted on a collar 14 on the rod 11 whereupon a spring turns the cam so that its teeth engage with teeth on the end of the lever 2. At the same time the lever 2 contacts with a fulcrum 18 upon which it turns during the braketightening operation. This fulcrum may be adjustable laterally of the vehicle to vary the power ratio of the lever 2. In a modification, the collar 14 carries fixed teeth which, in the braketightening operation, engage with teeth on a cam pivoted on the end of the lever 2 and connected through a spring to the lever 7.
Patent GB-1316895-A (GB)
Title: Scanning finger for electromechanical punch card scanner
IPC: G06K7/04
Filed: 1971-06-23
Abstract: 1316895 Scanning finger for a punched card reader F KUNZ 23 June 1971 [23 June 1970] 29540/71 Heading G4M A scanning finger for a punched card reader has a rigid finger portion 1 pivotally mounted at one end 3 and having an extension at the other end 2 to contact a punched card and a spring loaded arm 4 pivotally mounted on the finger portion 1 and having an extension 10 operating a switch contact. A spring 9 sits on lugs on the finger portion 1 and the arm 4 may be adjustable by a screw 12. The finger portion may have two spaced sets of lugs and holes for pins 5 to allow different mountings of the arm.
Patent GB-782960-A (GB)
Title: Improvements relating to hollow rivets or rivetable devices
IPC: F16B19/10
Filed: 1955-10-17
Abstract: 782,960. Rivets &c. DAIMLER-BENZ AKT.-GES. Oct. 17, 1955 [Oct. 15, 1954], No. 29543/55. Class 89(1) A tubular-rivet or other hollow severable-device comprises a body s, Fig. 8, with a collar 4 at one end and a neck adjacent the other end forming a flange k which is inserted through a hole in the part to be riveted. The latter end is then expanded, e.g. by a conical-rod, to cause the flange k to move outwards beyond the periphery of the hole. In another arranment, the body s, Fig. 11, is formed integrally with a bolt or pin J. In a modification, the body 10, Fig. 4, has an internally-screwed part 22 to receive a screwed member, and between this part and the neck 10a is a part-spherical enlargement which facilitates expansion of the end.
Patent GB-635901-A (GB)
Title: Improvements relating to hydraulically-operated brakes of automotive vehicles
IPC: B60T11/20
Filed: 1942-09-21
Abstract: 635,901. Elastic valves. FIAT SOC. PER AZIONI. Oct. 3, 1946, No. 29549. Convention date, Sept. 21, 1942. [Class 135] [Also in Groups XXVI and XXXIV] In a hydraulic master cylinder for operating brakes, annular gaskets 16, 19, 22 of rubber or the like are adapted by the action of spring and hydraulic pressure produced by the piston, to be expanded radially to cut-off the connection of the reservoir to the pressure chamber or to prevent leakage past the piston. The master cylinder shown is divided by a slidable partition 8 into two pressure chambers 9, 9<SP>1</SP> connected by ports 26, 26<SP>1</SP> to separate brakes, the pressure being produced by simultaneous operation of pistons 2, 21. Gaskets 19, 22 of rubber or the like normally convex at the periphery and in contact with the cylinder wall are associated with the pistons 2, 21 and the partition 8. Other gaskets 16, disposed between tubular members 14, 15, are normally spaced from the cylinder wall so that the chambers 9, 91 communicate with reservoir ports 10, 101 through holes in flanges 23 of the members 14. Springs 17, 20 are seated on plates 18 and on shoulders formed in the members 14, 15. When the pistons 2, 21 are moved to apply the brakes, the hydraulic pressure in chambers 9, 91 rises due to the resistance to flow towards the reservoirs offered by the apertured flanges 23. The gaskets 16 are thus expanded radially to contact the cylinder wall and so to cut-off the chambers from the reservoirs, by axial and radial pressure due to the springs and the hydraulic pressure acting on the gaskets. The gaskets 19, 22 are tightly pressed against the cylinder wall for the same reason, so as to prevent leakage from and between the chambers 9, 9<SP>1</SP>. Equalization of the pressure in the two chambers is effected by movement of the partition 8. The valve devices 16 are such as described in Specification 626,622. The Specification as open to inspection under Sect. 91 describes a modification, Fig. 4 (Cancelled), in which the valve device comprises a tubular member 30 which abuts on the gasket 29 of piston 28 and a sleeve 36 slidable on the member 30 and abutting on a gasket 42. Due to the springs 31, 33, the parts normally assume the position shown with the sleeve 36 against a stop 43 so that the reservoir is open to the cylinder through passages 39 in the sleeve. When the piston is moved to apply the brakes these passages are closed by the engagement of the shoulder 40 on the member 30 with a flange 41 on the member 36. The movement of the partition 27 in this form is limited by a pin-and-slot 11 which acts as a stop for the partition if the pressure fails in one pressure chamber. A further form is described which is similar to that of Fig. 2, except for the provision of the pin-and-slot device for the partition. This subject-matter does not appear in the Specification as accepted.
Patent GB-519273-A (GB)
Title: Improvements in or relating to hot water heating systems
IPC: F24D3/02
Filed: 1938-10-12
Abstract: 519,273. Check valves ; pressure relieving devices for fluids. CORNELL. E. S. Oct. 12, 1938. No. 29551. Convention date, Oct. 28, 1937. [Class 135] [Also in Group XIII] A combined valve and air vessel for use in a hot-water system comprises a casting &c. having water inlet and outlet passages 44, 45 respectively and, within the outlet passage, a pivotally-mounted gravity valve 60 for controlling the flow of water through the system. By regulating the screw 68, the valve may be adjusted to a permanently open position. Air entrapped in the space 50 reduces knocking and vibration. Fig. 4 shows a modification having an outlet 57 to an air-storage vessel, a vent valve 56, and a gauge glass.
Patent GB-282955-A (GB)
Title: Improvements relating to dolls' heads
IPC: A63H3/40
Filed: 1926-11-24
Abstract: 282,955. Wellings, N. Nov. 24, 1926. Dolls.-Relates to a doll's head of the kind formed of fabric, felt or like material C, backed with buckram or like material D, and consists in coating the inner surface of the forward part of the head with a waterproof material E such as plastic wood to the inner surface of which fixed or movable eyes G are attached by plaster of Paris or other cement K. The surface of the head is preferably coated with an adhesive such as liquid glue prior to the application of the waterproof material. The eyes, as shown, are rotatable in sockets formed in the plaster and are connected by a bridge H from which depends a weighted arm J. The head is formed in two halves the front half being strengthened by a wooden strut F. The rear half of the head may be coated with waterproof material in a similar manner to the front half.
Patent GB-248835-A (GB)
Title: Improvements in or relating to self-propelled vehicles
IPC: B61C1/00
Filed: 1924-12-10
Abstract: 248,835. Alley, S. E. Dec. 10, 1924. Railway locomotives, steam; tractors, steam. -Comprises a steam locomotive, railway motor car, or motor vehicle having in combination two or more independent vertical (or substantially vertical) engines 16, 23 each of which drives its own. axle 13 or 14. The engine crank-shafts 17, 25 are arranged so as to be in substantially the same horizontal plane as the axles. The boiler 15 is so mounted on the frame that there is a clear space below it. Other axles may be coupled to those directly driven by the engines. When there are more than two axles the vehicle may be articulated. Two boilers may be provided on one vehicle and they may be combined in any way with the two engines on the vehicle. Each end of a crank-shaft may be connected to the corresponding end of an axle, and in that case an equalizing or differeiatial device may be employed as described in Specifications 213,988 and 213.993, [Class 80 (ii), Gearing. Variable-speed &c.]. Specification 239,932 also is referred to.
Patent GB-1040949-A (GB)
Title: Hollow body molding process
IPC: B29C33/52
Filed: 1963-07-26
Abstract: 1,040,949. Moulding hollow bodies. F. H. MALONEY CO. July 26, 1963 [Dec. 4, 1962], No. 29752/63. Heading B5A. A method of moulding hollow bodies of elastomeric materials comprises positioning a soluble core in a mould cavity, filling the cavity with uncured elastomeric material, which is then cured by heat, and dissolving out the soluble core. The core assembly comprises a support rod 56, extending through the core and beyond the diameter of the spherical cavity formed in the mould. Sleeves 58 enclose the ends of the rod and position valve anchor inserts 60. The core 54 may be formed by placing the supporting assembly within a mould, and filling the mould with soluble material and compressing it, or by moulding the sphere from a fused salt. Sodium chloride or other water-soluble salts may be used. The core may be glazed to render it impervious. The core is positioned by locating it between two mould halves 10, 12, sleeves 58 fitting in sockets 40. Elastomeric material, e.g. natural or synthetic rubber or polyurethane is introduced through transfer sprues 24 from a transfer pot 16, and the mould is heated by passing steam through a passageway 42. After vulcanization, sleeves 58 are removed, the support rod 56 withdrawn and the core 54 is dissolved out, to leave the inserts 60 retained in the sphere.
Patent GB-392825-A (GB)
Title: Improvements in or relating to means for regulating the active surface of a radiatorfor internal combustion engines
IPC: F01P7/12
Filed: 1932-10-25
Abstract: 392,825. Radiators for motor vehicles. YACCO, S. A. F., 44, Avenue de la Grande ArmÚe, Paris. Oct. 25, 1932, No. 29866. Convention date, Aug. 23. [Class 29.] Shutters c for controlling the flow of air are moved to adjusted positions by a reversible electric motor e controlled through thermostats k<1>, k<2> in the water conduits. The shutter may consist of connected plates, the topmoat having nuts engaging screwed spindles i rotated by the motor-driven bevel gear h and the others having guide collars. The thermostats control switches j<1>, j<2> on the dashboard to energize relays l<1>, l<2> for starting, stopping, and reversing the motor, and a further switch actuated manually or automatically on starting the vehicle motor is provided for starting the motor to close the shutters while the engine is warming up. Another form of shutter described comprises a roller blind wound on a spring roller and adjusted by screw and nut mechanism. A stone guard is fitted in front of the shutter. Auxiliary hand-actuated gearing for rotating the screws may be provided, and a single thermostat may be employed.
Patent GB-965608-A (GB)
Title: Direct current amplifiers
IPC: H03K3/315
Filed: 1962-08-03
Abstract: 965,608. Controlled non-linear inductors; pulse modulation circuits; transistor amplifiers. GENERAL MOTORS CORPORATION. Aug. 3, 1962 [Sept. 27, 1961], No. 29907/62. Headings H3B, H3T and H4L. An amplifier circuit comprises an oscillator consisting of two alternately-conducting pushpull-connected transistors, each regeneratively coupled between its collector and base-emitter circuits and reciprocally coupled to the other by means of windings disposed on a common saturable magnetic core, the input signal to be amplified being applied to a further winding on the core so that the core is magnetically biased in accordance with the instantaneous magnitude and polarity of the input signal, the bias in the core controlling correspondingly the relative durations for which the two transistors are conductive, a filter device being coupled to the output of each transistor to develop therefrom a voltage proportional to the fraction of the total time for which the corresponding transistor is conductive and the outputs from the two filter devices being combined in opposition to provide an output signal proportional to the input signal to be amplified. A transistor oscillator comprises transistors 22, 24 regeneratively and reciprocally coupled via windings of a saturable-core transformer 10 and via the emitter-base circuits of transistors 50, 57. The input signal to be amplified is applied to a further winding 12 on the transformer 10; the signal according to its magnitude and polarity reduces the duration of each period of conduction of one of transistors 22, 24 and increases that of the other. Corresponding output pulses at the collectors of transistors 50, 57 are amplified by transistors 64, 72, smoothed by filter circuits 88, 90 and applied in opposition to resistors 92, 94 connected in series with load device 96 through which consequently flows a current proportional to the input current applied to winding 12.
Patent GB-288920-A (GB)
Title: Improvements in or relating to filters
IPC: B01D29/00
Filed: 1927-11-08
Abstract: 288,920. CuÚnoud, J. Nov. 8, 1927. Leaf-filters.-A filter for filtering wine &c. comprises an elongated chamber 1 which contains hollow filtering elements 19 and is mounted on a stand 66 in such a way that it can be turned into three different operative positions. In the upright position shown in Fig. 1, the wine enters under pressure at 11 and passes through perforated tubes 14 into the chamber, where asbestos is added, then through the flat elements 19 consisting of wire gauze surrounding perforated metal, and into a chamber 80 formed between a removable cover 4 and a partition 26, and thence through the exit 20. The elements 19 are united at the bottom.. and at the top are attached to the partition 26 with which without emptying the chamber 1 they can be withdrawn as a unit by a handle 32 when it is desired to clear them. Or they can be replaced by a conical strainer for straining must fed through the tube 11. The elements 19 are strengthened by internal sinuous wires 23 with distance pieces 24. At the two ends of the chamber 1 are air cocks 45, 46, the cock 45 connecting with the interior of the chamber 1, and the cock 46 with the interior of the straining elements. These cocks can be turned into three positions, to cut off all connection with atmosphere, to make direct communication with atmosphere, or to make communication through a floating valve which closes when the liquid reaches a certain height. A number of filters fed from an overhead receptacle or by a pump, may be coupled in parallel. In the position shown in Fig. 10, the wine need not be supplied under pressure, while for filtering small quantities the filter may be inverted. The lower ends of the filterelements may be connected by pipes to the chamber 80.
Patent GB-873019-A (GB)
Title: Improvements in or relating to substituted chrysenes and 1, 3-propanophenanthrenes
IPC: C07C49/753
Filed: 1959-09-02
Abstract: The invention comprises 2-keto-4a-R1-8-OR-2,3,4,4a,5,6,11,12-octahydrochrysenes and 7-OR-1-R1-13-methyl - 13 - hydroxy - 1,2,3,4,9,10-hexahydro-1,3-propano-phenanthrene- 2 - ones having respectively the general formulae IV and III <FORM:0873019/IV (b)/1> <FORM:0873019/IV (b)/2> wherein R represents an alkyl group containing not more than 5 carbon atoms, and R1 represents hydrogen or an alkyl group containing not more than 5 carbon atoms, and the preparation thereof by reacting 6-alkoxy-2-keto-1,2,3,4-tetrahydronaphthalene with vinyl methyl or vinylethyl ketone, b -dialkylaminoethylmethyl (or methyl) ketone or a quaternary salt thereof, e.g. the methiodide thereof, or a b -halogenoethylmethyl (or ethyl) ketone to form a tricyclic ketone of the general formula II <FORM:0873019/IV (b)/3> wherein R and R1 have the above significance (the compound is believed to be a tautomeric mixture of a 1-R1-2-keto-7-OR-1,2,3,4,9,10-hexahydro-phenanthrene and the corresponding 1-R1-2-keto-7-OR-2,3,4,4a,9,10-hexahydrophenanthrene), and treating the tricyclic ketone with vinylmethyl ketone, a b -dialkylaminoethylmethyl ketone or a quaternary salt thereof, e.g. the methiodide thereof, or a b -halogenoethylmethyl ketone to form a compound of the second general formula.  Under some conditions, e.g. at a low temperature such as about 0 DEG C., it is possible to isolate the compound of the first general formula which is generally a mixture of the 13a - and 13b -hydroxy compounds.  Both steps in the above process may be carried out in the presence of an inert solvent such as an ether, alcohol or benzene, and a Michael-condensation catalyst such as an alkali metal, alkali metal hydride, alkali metal alcoholate, alkali metal amide, amine or organic ammonium hydroxide. The compounds of the first general formula may be converted into compounds of the second general formula by heating, e.g. in the presence of a solvent and an alkali metal alcoholate.  In preparations and examples compounds of the above three general formulae are prepared wherein R1 represents the methyl group or a hydrogen atom, and R represents the methyl group.