baber/WOPTO huggingface dataset:
Patent GB-266010-A (GB)
Title: Improvements in automatic quick acting circuit breaking devices
IPC: H01H77/10
Filed: 1927-02-15
Abstract: 266,010. Branchu, P. J. Feb. 15, 1926, [Convention date]. Switches, electromagnetic. - The quick action characteristics of the circuit-breaking device described in Specification 250,570 (in which a light contact-member is moved rapidly by the reaction of the current therein with a fixed magnetic field) are improved by employing a second quick-acting switch which, when the first switch is moved to the off position, serves to hold it there. The main circuit to be controlled is from the fixed contact 6 to movable contact-arm 2 and through the magnetizing windings of the core structure a which, in the form shown, is common to the two switches. When, with excess current, the contact-arm 2 breaks the main circuit, it still remains in engagement with an auxiliary long contact 7 with which the second contact-arm 8 engages the circuit is now through the resistance 11, arm 8, contact 7, arm 2 and the magnetizing windings. This reduced current serves to move the arm 8 in the clockwise direction and the lost motion in the slotted link 14 connecting together the two contact-arms is taken up. The second contact-arm therefore serves, to reinforce the off position of the main contact-arm when the reduced current is operative. A resistance may be connected in shunt with the contact-arm 2 whereby the action is expedited in the event of rapidly-increasing currents and at the same time an improved blow-out effect is obtained.
Patent GB-1208065-A (GB)
Title: Impact resistant ethylene-propylene block copolymer compositions
IPC: C08L53/00
Filed: 1968-01-26
Abstract: 1,208,065. Ethylene-propylene block copolymer blends with polyethylene. ASAHI KASEI KOGYO K.K. 26 Jan., 1968 [2 Feb., 1967], No. 4305/68. Heading C3P. An ethylene-propylene block copolymer composition comprises 70-95% by weight of an ethylene-propylene block copolymer having an ethylene content of 0À5-8À0% by weight, said block copolymer comprising at least one ethylene-propylene copolymeric block and at least one propylene homopolymeric block and 30-5% of polyethylene having a density not lower than 0À94 g./cm.<SP>3</SP> at 23‹ C. The block copolymer may be obtained by adding ethylene intermittently to a system in which propylene is being polymerized, examples of this procedure being given.
Patent GB-1022439-A (GB)
Title: Method of refining aluminium-silicon alloys
IPC: C22C21/02
Filed: 1965-02-01
Abstract: A method for refining Al-Si alloys comprises introducing into the melt at least one sodium salt (e.g. a sodium salt of an oxygen acid of a non-metal of the third to sixth main Group of the Periodic Table) and finely divided calcium or a calcium alloy (e.g. CaSi). Halides of alkali metals or alkaline earth metals may also be added and the refining agents are preferably introduced into the melt in the form of a cast or pressed body by means of a plunger.
Patent GB-1069171-A (GB)
Title: Method and apparatus for manufacturing sandwich panels
IPC: B27N3/16
Filed: 1965-02-01
Abstract: 1,069,171. Laminates and laminating. ESTABLISSEMENT PROGRESSBAU. Feb. 1, 1965 [Jan. 31, 1964], No. 4318/65. Heading B5N. Insulating boards comprising a layer of foamed plastics material sandwiched between layers of cement-bound fibrous material such as wood-wool are made by supplying, on a conveyer belt, an assembly of a carrier plate carrying one of the outer layers surmounted by the foam layer, to a drum-like unit comprising rotatable end plates connected by U-section bars, conveying the assembly into the drum on a pair of spaced conveyer belts, rotating the drum through 180 degrees to invert the assembly, while holding it by means of stops, conveying a second assembly, comprising only a cement-bound fibrous outer layer and a supporting plate, beneath the first, raising it by means between its associated spaced conveyer belts, and pressing it against the foamed layer of the first assembly, releasing the latter, conveying the completed sandwich and enclosing carrier plates from the drum, removing the upper carrier plate and hotpressing the laminate.
Patent GB-607906-A (GB)
Title: Improvements in and relating to kneading machines for bread doughs and like plastic materials
IPC: A21C1/00
Filed: 1946-02-13
Abstract: 607,906. Kneading-machines. POINTON, J. E., and BAKER PERKINS, Ltd. Feb. 13, 1946, No. 4461. [Class 86] A mixing or kneading machine of the removable rotary pan type comprises a pair of kneader arms driven by a pair of coaxial crank arms or discs, the movement of the arms being modified by cam means located between the crank shaft and the operative feet or claws of the kneader arms, the orbits of the feet being coextensive, the feet passing one another in the horizontal path of the orbit across the pan bottom. A pair of toothed disc cranks 3, 4, Fig. 2, driven in opposite directions by pinion gearing and a belt drive from an electric motor, carry crank pins 13, 14, respectively, supported at their outer ends in supplemental crank discs 15, 16. Kneader arms 18, 19 are formed integrally with sleeves 17 rotatably mounted on the crank pins 13, 14, respectively. The orbital movements of the kneader arms actuated by the cranks are controlled by the action of lever arms 20, 21 which are formed integrally with the sleeves 17 and carry rollers 22, 23, reciprocating in arcuate cam tracks 20, 21. The cam tracks may be pivotally mounted in order to provide adjustment of the form of the orbital paths of the kneaders. The crank mechanism and the pan are enclosed by a cover which is partially domed above the pan and comprises quadrant portions 28 which may be swung about vertical pivots 27. In an alternative construction the lever arms 20, 21 may be omitted, and the kneader arms may have projecting pins carrying rollers directly engaging cam tracks.
Patent GB-1078456-A (GB)
Title: Process for the isolation of 7ª‡-methyl-steroids from mixtures of the epimeric 7-methyl compounds
IPC: C07J75/00
Filed: 1966-02-08
Abstract: 7a -Methyl-3-oxo-D 4-steroids are isolated from mixtures with their 7b -methyl epimers by treating the mixtures with potassium cyanide and isolating the required epimer in a known manner, e.g. by crystallization or chromatography. Examples describe the isolation of 3 - oxo - 7a  - methyl - 17 - ethylenedioxy - D 4 - androstene and 3-oxo-7a ,17a -dimethyl-17b -hydroxy-D 4-estrene from mixtures with their epimers and of the former from the mixture of epimers formed by reaction of 3 - oxo - 17 - ethylenedioxy - D 4,6 - androstadiene with methyl magnesium bromide in the presence of a copper salt, a partial separation of the epimers being first achieved by chromatography on alumina and elution with benzene-petroleum ether.
Patent GB-799780-A (GB)
Title: New n-alkyl-alkyl-piperidine-ª‡-monocarboxylic acid amides and n-alkyl-alkyl-pyrrolidine-ª‡-monocarboxylic acid amides
Filed: 1957-02-11
Abstract: The invention comprises N-alkyl-alkyl-piperidine - a  - monocarboxylic acid amides and N-alkyl - alkyl - pyrrolidine - a  - monocarboxylic acid amides of the formul\mg <FORM:0799780/IV (b)/1> respectively, wherein R1 is an alkyl group, R2 and R3 are each an alkyl group or one is alkyl and the other is hydrogen, and Ar is an unsubstituted benzene ring or an alkyl, alkoxy, hydroxy and/or chloro-substituted benzene ring, and acid addition salts of such amides.  The compounds are prepared by reacting the chloride of a 2-chloro-6-amino-caproic acid having an alkyl substitutent at one or two of the 3-, 4-, 5- and 6-positions or the chloride of a 2 - chloro - 5 - amino - valeric acid having an alkyl substitutent at one or two of the 3-, 4- and 5-positions, preferably in the form of the hydrochloride, with aniline or an appropriately substituted aniline to form the corresponding amide of the acid, then effecting ring closure under the action of sodium hydroxide, and finally alkylating the nuclear nitrogen. Preferred compounds are those in which Ar is substituted with an alkyl group or chlorine in the 2-position, with or without a hydroxy, alkyl or alkoxy group in the 4-position and with or without chlorine or an alkyl or alkoxy group in the 6-position. The examples describe the preparation of N - ethyl - 4 - methyl - pyrrolidine - 2 - carboxylic acid - 2 - ethoxy - anilide, N - ethyl-4 - methyl - pyrrolidine - 2 - carboxy - 2 - ethyl-anilide, N - n - butyl - 5 - ethyl - pipecolyl - 2 - chloro - 6 - methyl - anilide and N - methyl-4-methyl-pipecolyl-2 : 6-xylidide.
Patent GB-608007-A (GB)
Title: Improvements in and relating to machines for making pottery ware
IPC: B28B1/02
Filed: 1946-02-14
Abstract: 608,007. Making pottery. MADDOCK & SONS, Ltd., J., and MADDOCK, R. A. Feb. 14, 1946. No. 4588. Addition to 579,291. [Class 87 (i)] In a pottery making machine as described in the parent Specification in which a rotary mould table is moved step by step to bring the moulds to various positions for different operations, the work in two adjacent positions is preliminarily and finally shaped respectively by two tools carried by a single pivoted arm. The tools are carried by holders 13 clamped on the arm 10 by a headed spindle 12 provided with a hand nut 17 and spring 19. Each holder may carry more than one tool as described in Specification 583,272 to provide for a ready change of profile.
Patent GB-690547-A (GB)
Title: Improvements in telephone signalling systems
IPC: H04Q1/446
Filed: 1948-02-17
Abstract: 690,547. Voice-frequency signalling. O'DELL, A. E. (Punch Engineering Pty., Ltd.). Feb. 20, 1948 [Feb. 17, 1948], No. 4636/48. Class 40 (iv). [Also in Group XL(b)] In a telephone voice-frequency signalling system in which the signalling frequencies are situated in the highest part of the voice-frequency range and in which steady state signalling, e.g. continuous tone, is used, the signal and speech paths are separated by high and low-pass filters supplemented by impedance networks giving high attenuation at the crossover frequency of the filters. One signalling frequency is used in each direction, and the frequency may be either applied or removed when the junction is taken into use. The impedance network described in Australian Specification 123,762 consists of two branches having inputs in parallel and outputs in series and including a resonant circuit C, L, R1 in one branch and a transformer 106, 107 in the other. The phase and attenuation relationship of the outputs of the branches is such that if connected in opposition the output voltage of the network is a maximum at a frequency slightly lower than a narrow band at which it is a minimum, and if the branch outputs are connected additively the network output voltage reaches a maximum at a slightly higher frequency than a narrow band at which it is a minimum. Thus by designing the networks to give maximum attenuation at the cross-over frequency of the filters and using additively and opposedly connected networks in series with high and low pass filters respectively, the networks introduce gain in the pass-bands of the filters in addition to introducing additional attenuation at the cross-over frequency.
Patent GB-359343-A (GB)
Title: Improvements in high frequency induction furnaces
IPC: H05B6/36
Filed: 1931-02-13
Abstract: 359,343. Inductances. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berin. Feb. 13, 1931, No. 4640. Convention date, March 20, 1930. Addition to 291,774, [Class 37, Electricity, Measuring &c.]. [Class 37.] A part of every one of the windings forming the coil of the furnace of the parent Specification is formed as a cooling tube. Preferably the outside parts only of each winding are so made and every individual tube is traversed by a separate stream of cooling water.
Patent GB-572861-A (GB)
Title: Improvements in nickel and cobalt alloys
IPC: C22C19/00
Filed: 1942-04-09
Abstract: 572,861. Alloys; annealing. MOND NICKEL CO., Ltd. (International Nickel Co., Inc:). April 9, 1942, No. 4688. [Classes 72 and 82 (i)] [Also in Group XXII] An age-hardenable alloy containing at least 45 per cent of nickel, or of nickel and up to 10 per cent of cobalt, and which may contain also up to 45 per cent of iron, up to 45 per cent of chromium, up to 10 per cent of manganese, up to 8 per cent of copper, and up to 5, per cent of other elements, contains also aluminium and either silicon or titanium or both, the aluminium content exceeding the combined silicon and titanium content, and the ratio of the nickel plus cobalt content to the content of aluminium plus silicon plus twice the square root of the titanium being between 11 and 20 to 1, preferably between 13 and 17 to 1. Up to 0.5 per cent of carbon may be present. 'The alloys may be softened by quenching or rapidly cooling from over 1500‹ F. They may then be deformed cold, machined, and hardened by reheating to 1100-1500‹ F. for up to 24 hours and cooling slowly. Cold working may be applied before or after the age-hardening. Certain of the alloys may be hot-worked at 1900-2400‹ F., others at 1400-2450‹ F. According to the Provisional Specification, any two or all three of the elements aluminium, silicon and titanium may be used.
Patent GB-956584-A (GB)
Title: Improvements in web feeding apparatus
IPC: B65C9/18
Filed: 1961-02-08
Abstract: 956,584. Feeding webs. MOLINS MACHINE CO. Ltd., and A. F. MIDDLEWOOD. Feb. 7, 1962 [Feb. 8, 1961], No. 4699/61. Heading B6B. Web feeding comprises an oscillating arm 13 provided with at least one pawl 12 for engagement with cut-outs 11 in a web 3, an arcuate guide 8 for supporting the web during feeding, a brake 29 to hold the web against movement on the return stroke of the pawl, and a looping device 4 movable in synchronism with the pawl movements to draw web from a supply during their return stroke and to release the pressure on the loop formed on the next feeding stroke of the pawl to enable web to be fed without undue tension. As shown; the looping device 4 is a roller carried by an arm 5 oscillated about an axis 6 through a rod 18 by a crank disc 20., The rod 18 also oscillates an arm 15 fixed to the arm 13. A roller 26 engaging a cam 27 controls the brake 29.
Patent GB-556643-A (GB)
Title: Improvements in or relating to electrical measuring instruments
IPC: G01R1/10
Filed: 1942-04-10
Abstract: 556,643. Voltmeters. STANDARD TELEPHONES & CABLES, Ltd., and HANDLEY, J. April 10, 1942, No. 4745. [Class 37] An electrical measuring instrument comprises a rotor spindle of magnetic material pivoted about an horizontal axis, a magnet system having unlike poles.disposed close above 'the ends of the spindle so that the spindle completes the magnetic circuit and is attracted upwardly to relieve the pressure of the rotor on its bearings, and an adjustable shunt to the magnetic circuit through the spindle whereby the magnetic attraction upwardly can be varied. The electrostatic voltmeter shown has sets of quadrantal stator vanes 11 and sector-shaped rotor vanes 12, which latter are mounted on a spindle 13. A permanent bar magnet 14. is arranged parallel with the spindle and carries at its ends polepieces 15, 16 which extend downwardly so that their end faces are above and close to the ends of the spindle 13. The spindle is of magnetic material to complete the magnetic circuit so that the upward attraction relieves part of the weight af the spindle from the bearings. The attraction is adjustable by means of an L-shaped soft iron magnetic shunt 17 having an aperture in the extremity of one of its legs which is fitted over the rear end of the permanent magnet 14. The other leg extends forwardly parallel to the magnet and carries at its forward end a soft iron rod 18 which can be shifted longitudinally as by a screwthreaded engagement with the aperture to vary the width of the airgap between its end and the magnet 14. The shunt member 17 also has an extension 19 which passes forwardly and downwardly so as to cause eddy currents in a conducting plate 20 for damping. A tubular distancepiece 21 of non-magnetic material is mounted on the front end of the spindle 13 and is just clear of the pole-piece 15. At the rear end of the spindle is a fixed piece 22 which carries the pivot pin 23 and is in direct contact with the polepiece 16. Specification 556,655 is referred to.
Patent GB-974708-A (GB)
Title: Alkenyl aryl monomers, polymers thereof and methods of preparing them
Inventor: PRICE JOHN ARTHUR
IPC: C07C25/24
Filed: 1962-02-07
Abstract: Compounds having the general formula <FORM:0974708/C1/1> where x, y and z are each hydrogen, chlorine or methyl and z is hydrogen when y is chlorine or methyl, may be prepared by reacting 3-chloro-1-propene with magnesium in dry ether to form the corresponding Grignard reagent and then reacting the Grignard reagent with the 1-bromo-ethylaryl compound.  Various 4(-chloro and dichloro phenyl) pentenes and 4-(chloro tolyl) pentenes may be prepared.ALSO:Polymers of monomers having the general formula <FORM:0974708/C3/1> where x, y and z are each hydrogen, chlorine or methyl and z is hydrogen when y is chlorine or methyl, may be prepared using a catalyst comprising a Group IVa metal halide and an aluminium lower alkyl compound.  The amount of aluminium to the Group IVa metal being in the range 0.5 to 3.5 mol aluminium to 1 mol of Group IVa metal.  The catalyst is prepared by adding the components to an inert solvent to form a slurry.  Lists of monomers and catalyst components are given. In the examples a polymer of 4-phenyl-pentene-1 is prepared using as catalyst aluminium triisobutyl or triethyl and titanium trichloride or tetrachloride.ALSO:Compounds having the general formula <FORM:0974708/C4-C5/1> where x, y and z are each hydrogen, or methyl and z is hydrogen when y is methyl, may be prepared by reacting 3-chloro-1-propene with magnesium in dry ether to form the corresponding Grignard reagent and then reacting the Grignard reagent with the 1-bromoethyl aryl compound. In the example, 4-phenyl-1-pentene is prepared by reacting 3-chloro-1-propene in dry ether with magnesium turnings and the slurry produced is treated with 1-bromoethylbenzene; 4-phenyl-1-pentene is recovered. 4-tolyl and 4-xylyl pentenes may also be prepared.
Patent GB-757433-A (GB)
Title: Improvements relating to gas or liquid fuel fired furnaces
IPC: F23N5/20
Filed: 1954-02-18
Abstract: 757,433. Supplying fuel to burners. SEVILLE, J. R., and SPOONER FOOD MACHINERY ENGINEERING CO., Ltd. Dec. 28, 1954 [Feb. 18, 1954], No. 4761/54. Class 75(1). In automatic control means for gas or liquid fired burners (not shown) the fuel is fed to the burners through an electrically operated cut-off valve G and through a valve for high /low flame regulation driven by a motor E and means are provided whereby when the flame is extinguished. by turning off the fuel or otherwise the motordriven valve begins to move to its low flame position and the burner cannot be relighted until the valve has reached the limit of its travel in this direction. The motor E drives the high/ low flame valve through a mechanical coupling comprising a disc 11, link 13 and a lever 14 and is energized through one or other of two wires 5, 7 which are connected in turn to the electric supply by a thermostatic change-over switch D responsive to the temperature of an oven heated by the burners, the wire 5 being connected when the oven temperature is low and the wire 7 when the temperature is high. The motor also rotates a cam 10 which operates switches in the wires 5, 7 to stop the motor, when energized through wire 5, in the high flame position of the valve and, when energized through wire 7, in the low flame position of the valve. The. thermostatic change-over switch D however is only effective when a flame exists at the burner to operate a flame-sensing switch I which energizes a relay C to close the upper contact of contacts C3 connecting the selector arm of the change-over switch D to the electric supply. In the absence of a flame the relay C is de-energized and the lower contact of contacts C3 connects the wire 7 direct to the electric supply so that the high /low flame valve moves to the low flame position. When the motor is in the position corresponding to the low flame position of the valve it closes a switch connecting two wires 8, 9 for energizing a relay B through a push-button F, the relay operating separate contacts for energizing an ignition transformer H and the electrically operated cut-off valve G. When a flame is established the cut-off valve G is supplied independently of the push-button operated relay B through contacts C4 of the relay C. A lamp 15 lights up when the electric supply is switched on and is de-energized by contacts C2 of the relay C when a flame is sensed by the switch I. The electric supply to the relay B is controlled by the middle contacts of a relay A energized through contacts C1 of the relay C at starting. The relay A takes thirty to forty seconds to close its contacts, this delay being longer than the time taken by the motor E to move the high /low flame valve from the high to the low flame position. A lamp J lights up when the contacts of relay A are closed. A master switch may be associated with a fan circulating gages heated in the oven. The control means described in the Provisional Specification includes a reversible electric motor. Specification 728,302 is referred to.
Patent GB-396821-A (GB)
Title: A continuously operating centrifugal machine
IPC: B04B5/00
Filed: 1932-02-18
Abstract: 396,821. Centrifugal separators. SCHULZ, H., 87, Berliner Strasse, Tempelhof, Berlin. Feb. 18, 1932, No. 4806. [Class 23.] A centrifuge for the continuous separation of solids from liquids has a drum slowly rotated inside a rapidly rotated housing ; cells are provided on the periphery of the drum and have outwardly directed apertures which are closed except at certain discharge places near the axis of the housing. The housing 1 is supported in bearings 2, 3 and is driven by means of the belt pulley 4. The drum 11 is provided with floats 33 on each end and is carried on the shaft 13, Fig. 3, having free play in bearings 14 on the housing wall. The drum is connected by bevel and toothed gearing to the fixed shaft 5 on which the housing rotates. An inlet pipe 15, for liquid to be treated, passes through the housing at the bearing 3 and communicates with radial pipes 18, Fig. 2. These pipes convey the liquid to cells 19 on the interior of the drum wall. The solids are deposited in the cells while the liquid flows over the edges 20 into the housing where it forms a ring in which floats the drum and its associated parts ; the liquid passes out by the exits 26. Outwardlydirected apertures serve for the discharge of solids from the cells 19, and they are opened and closed periodically by flaps 21. They are kept closed while the flaps travel round the tracks 22, but the flaps are thrown outwards by centrifugal force as the cells reach the discharge points 39. The solids are then thrown out through passages 24 to the discharge channels 25.