baber/WOPTO huggingface dataset:
Patent GB-1524296-A (GB)
Title: Periscopeassembly equipped with a device for intercepting parasitic radiation
IPC: H01Q19/10
Filed: 1976-02-25
Abstract: 1524296 Aerials THOMSON-CSF 25 Feb 1976 [28 Feb 1975] 07508/76 Heading H4A An antenna arrangement includes reflector 3, arranged as a periscope and mounted at the top end of pylon 2 at the base of which is situated directional antenna 1. A microwave beam transmitted from antenna I vertically, in direction A, is deflected by reflector 3 into direction B. Any tendency for reflector 3 to also reflect unwanted microwave signals in direction B, e.g. from secondary lobes or nearby transmitters is reduced by provision of device 4 which forms a cowling over reflector 3, is shaped to have horizontal and vertical openings for passage of the wanted beam to and from reflector 3 and comprises an outer layer of metal and may further comprise an inner layer of microwave absorbing material e.g., graphite loaded polyurethane foam. Alternatively, the metal may be replaced by laminated glass. In another embodiment, Fig. 3, the device 4 may comprise only collar 42 around reflector 3, and horizontal and vertical collars 43 and 44 respectively. In a further embodiment vertical collar 44 may be dispensed with and the reflector collar suitably enlarged (Fig. 4, not shown).
Patent GB-458174-A (GB)
Title: Improvements in or relating to methods of producing concrete articles of great strength and high resistivity against chemical influences
IPC: C04B28/02
Filed: 1935-03-11
Abstract: Concrete articles are moulded from a composition containing cement and material with more than 80 per cent silicic acid, e.g. quartz, and are hardened by steam under pressure.  The material preferably contains 15 per cent or more of pulverized quartz, e.g. passing 4900 mesh per sq. cm.  The gauging water may contain 5 per cent or more of waterglass.
Patent GB-415168-A (GB)
Title: Improvements in electrical synchronous motors for operating clocks and like mechanisms
IPC: H02K19/06
Filed: 1933-03-13
Abstract: 415,168. Alternating-current motors. HOLLANDS, H. W., 62, Haslemere Avenue, West Ealing, London. March 13, 1933, No. 7614. [Class 35.] A synchronous motor for driving electric clocks has a stator formed from a single stamping with a central part 3 and outer ends 4 ; toothed polepieces 7 attached to the ends project inwards. The toothed rotor disc 8 is supported by a spindle 6 provided with a bearing in the centre part of the yoke. A disc of brass 9 or other non-magnetic material is rotatably mounted on the spindle being in frictionally engagement therewith. In a modification the rotor is in the form of an externally toothed annulus with the central hole nearly filled by a disc fixed to the centre part of the stator ; a brass cross bar attached to the annulus forms the means for mounting on the spindle.
Patent GB-526144-A (GB)
Title: Improvements in or relating to gas burning appliances
IPC: F24C3/10
Filed: 1939-03-09
Abstract: 526,144. Lighting. GAS LIGHT & COKE CO., and HOLLIDAY, G. C. March 9, 1939, No. 7630. [Class 75 (iii)] The burner 7 of a gas-burning appliance such as a sump heater for motor cars or a radiator for cinemas &c. is lit by a flame applied to a hole 13 in a flash tube composed of two parts 1, 2 secured to the wall 5 of the appliance by a ferrule 3 and nut 4, the lighting hole 13 being normally covered by a cylindrical shutter 10 which may be pulled outwardly against the resistance of a spring 11 engaging a disc 9 on the part 1. The inner end 6 of the part 2 is belled out.
Patent GB-609363-A (GB)
Title: Improvements in bags
IPC: B65D30/24
Filed: 1946-03-12
Abstract: 609,363. Paper bags. BILLERUDS AKTIEBOLAG. March 12, 1946. No. 7685. Convention date April 28, 1941. [Class 94 (ii)] A valve bag 1 provided with a valve-sealing means comprising a tube of paper or the like 3 extending into the bag beyond the valve 2 and which is bent back on itself inside the bag to form the seal, the top wall of the tube 3 being provided with a bendable stiffening insert of metal, 4, is characterised in that the insert consists of a metal wire bent forth and back to form a few stems interconnected by bends and is applied so that the stems run substantially in the longitudinal direction of the tube 3.
Patent GB-1463989-A (GB)
Title: Apparatus for heating air or exhaust gas
IPC: F01N3/30
Filed: 1974-02-20
Abstract: 1463989 Heating induction air or exhaust gases J EBERSPACHER 20 Feb 1974 [6 March 1973]  7694/74 Heading FIB [Also in Division F4] Apparatus for heating a gas (e.g. exhaust gas from an I.C. engine before it is fed to a catalytic reactor or air for feeding a diesel engine) comprises inlet and outlet conduits 2, 6 an intermediate conduit 8 defining an annular chamber 1 and a tapered transition conduit 15 enclosing a space 56 in communication with the annular chamber 1, a burner 58 with a tubular portion 3 defining a combustion chamber 60 which communicates with the annular chamber 1, and an arcuate baffle 7 with an angular extent of from 60 degrees to 120 degrees lying in a plane perpendicular to the axes of said conduits and located at the junction between the conduits 8 and 15 in the region where the tubular portion 3 of the burner 58 is connected to the conduit 8. The combustion gases from the burner flow round the annular chamber 1 to heat the inlet conduit 2, then enter the space 56 where they mix with the gas supplied to the inlet conduit 2 before flowing to the outlet conduit 6. Fuel is supplied via conduit 11 and primary air via an air connection 14 to a mixing nozzle 5 from which air-fuel mixture emerges into the combustion chamber 60 to be ignited by a device, e.g. a spark-plug (not shown), located in a connection socket 9, secondary air is supplied to the combustion chamber 60 tangentially via a conduit 4. A control conduit 10 is provided with a thermostat communicating with passage 61 to regulate the starting and stopping of the appar atus in dependence upon the temperature of the gases leaving the conduit 6. The fuel from conduit 11 is fed through a passage 70, Fig. 4 (not shown) to be atomized by an atomizing ring 18 and mixed with the primary air from connection 14 which is supplied via sleeve 17.
Patent GB-252833-A (GB)
Title: Improvements in feeding mechanism
IPC: A23G9/28
Filed: 1925-03-23
Abstract: 252,833. Maguth, M. J. March 23, 1925. Hooks, feeding. - A hopper for feeding elongated fastening hooks to apparatus for attaching them to tape or other flexible strip material has a number of circumferentially arranged outlets which, as the hopper is intermittently rotated, are brought in succession into register with a feeding chute by which the articles are delivered, those articles which are not in proper feeding position in their outlets being positively retained in the hopper. The hooks are fed into the open mouth 76, Figs. 1 and 4, of the hopper, which is rotatably supported in a bearing 17, Fig. 4, carried by arms 18, 19 on supports 22, 23. The hopper is intermittently rotated, when clutch members 33, 34 are in engagement, by a screw-shaped cam mounted on a shaft 41 and driven through bevel gearing 39, 40 and engaging with a series of studs 45 arranged around the underside of the hopper. A sector 49 carrying flexible fingers 50 is continuously oscillated to and fro inside the hopper as it rotates to stir up the hooks, which arrange themselves under gravity in outlets cr channels 63, Fig. 6, between projections 62 on the underside of the base plats of the hopper. Those, hooks which are correctly positioned run out to the edge of the hopper and are retained by a guide plate 66 until they are in register with the mouth of the delivery chute 73 down which they are free to flow, hooks accumulating at the head of the chute being deflected by a flanged plate 100 into a receptacle 101. Incorrectly positioned hooks are retained in the guide channels 63 and are held by spring plungers 58 mounted round the edge of the hopper and moved inwards through holes 55 to press against the hooks when the heads of these spring plungers pass under a sector plate 70. Improperly arranged hooks, if retained in the guide channels, are removed by a member 79 which is reciprocated to enter the guide channels in succession in the intervals of rest of the hopper.
Patent GB-733253-A (GB)
Title: Bromosteroids
IPC: C07J71/00
Filed: 1953-03-20
Abstract: The invention comprises 3-acyloxy-16(17)-oxido-21-bromopregnan-20-ones and the corresponding "allo" compounds, in which the acyloxy group is derived from an organic carboxylic acid and preferably contains 1-8 carbon atoms, and a process for their preparation which comprises reacting a 3 : 20-diacyloxy-16(17)-oxido-20-pregnene with about one molar equivalent of bromine.  The starting material, which is advantageously brominated without isolation from the reaction mixture in which it is formed, may be prepared by the action of about one molar equivalent of an organic per-acid, at about -40 DEG  to + 40 DEG  C., on a 3 : 20-diacyloxy - 16 : 20 - pregnadiene, which in turn is obtainable by reacting a 3-hydroxy- or 3-acyloxy - 16 - pregnene - 20 - one with an isopropenyl acylate in the presence of a strong acid catalyst. In an example, 3b -acetoxy-16-allopregnen-20-one is heated with isopropenyl acetate and p-toluenesulphonic acid to produce 3b  : 20-diacetoxy-16 : 20-allopregnadiene, this is treated with perbenzoic acid in chloroform and benzene below 0 DEG  C., and the resulting 3b  : 20-diacetoxy - 16(17) - oxido - 20 - allopregnene is treated with bromine in methylene chloride to form 3b  - acetoxy - 16(17) - oxido - 21 - bromoallopregnan-20-one. Additional products, starting materials, isopropenyl acylates, strong acid catalysts and solvents are listed.  Specification 729,610 is referred to.  3b  : 21 - Diacetoxy - 16(17) - oxidoallopregnan-20-one is obtained if the product of the example is treated with sodium iodide in acetone followed by potassium bicarbonate and acetic acid.
Patent GB-430935-A (GB)
Title: Improvements in and relating to the concentration of latex
IPC: C08C1/08
Filed: 1934-03-12
Abstract: Tragon seed gum, extracted from the seeds of the locust bean, is employed as a creaming agent for latex, preferably in the form of a 3 per cent solution in water.  The rate of creaming is augmented, and stability of the cream increased by an increase of alkalinity of the latex prior to the operation, e.g. by the addition of ammonia up to a weight of 1,5 per cent of the rubber.  The addition of 0,3 parts of gum to 100 parts of water in such a latex yields a cream of approximately 60 per cent rubber content in 48 hours.
Patent GB-180110-A (GB)
Title: Improved process for the production of sodium pentaborate direct from boron ores
IPC: C01B35/10
Filed: 1921-03-12
Abstract: Sodium pentaborate is obtained direct from boron ores such as boro natrocalcite by passing the requisite quantity of sulphur dioxide into a mixture of the ore with water.  It is preferred to conduct the operation in two stages, sulphur dioxide being passed in excess into a mixture of the ore with water until the boric acid is liberated, and then the supply of sulphur dioxide is stopped and more ore is added, the mixture being heated to effect the reaction. Specification 158,992 is referred to.
Patent GB-492045-A (GB)
Title: Improvements in torpedo-boats
IPC: F41F3/08
Filed: 1937-03-18
Abstract: 492,045. Torpedo boats ; launching torpedoes. SPURR, E. March 18, 1937, No. 7906. [Class 113 (ii)] [Also in Group XXI] A torpedo boat of the hydroplane type and being of aerofoil form in profile has torpedo compartments 10, each provided with hinged lower doors to enable the torpedo to be dropped through the bottom. The boat is formed with two planing steps, the stern step being narrow and only extending between the torpedo compartments. Two sets of engines 18 are provided which may drive either two propellers, or one only through gearing. Gunners' compartments are formed in the superstructure 5, and also in the hull at 7 and 9. Dinghies 17 are housed in two covered compartments 16. Specifications 485,572, 488,440, and 492,046 are referred to.
Patent GB-563170-A (GB)
Title: Improvements in or relating to methods of producing a pre-cooked food supplement in wafer-like form, and the improved products resulting therefrom
IPC: A23L33/15
Filed: 1942-06-10
Abstract: A ready-to-eat precooked food containing a normally labile vitamin component stabilized against deterioration on exposure to air, is prepared by coating particles of a precooked cereal with an edible binder and the vitamin, e.g. vitamin A or C, to produce a free-flowing composition and compressing into substantially air-dry self-sustaining wafers, the entire process being carried out at a temperature below that at which the potency of the vitamin is impaired.  Natural or synthetic vitamin complexes and provitamins or materials containing such vitamins, such as brewer's yeast, irradiated yeast, liver extracts or orange juice, may be used. Mineral dietary adjuncts, such as those containing combined iron, calcium, copper, manganese, phosphorus, iodine or sulphur, may also be included.  The product may be coated with sugar, chocolate or fat. In an example, "Frodex" (spray-dried corn syrup solids), dextrose hydrate, malt syrup, agar-agar or a like binder, vitamin A and D oils, vitamins B1 and C, riboflavin and nicotinic acid are mixed and added to precooked, preferably defatted, soya grits, or cracker crumbs, and this mixture is added to a moistened and flavoured precooked granular oat cereal, made from oat flour, dextrose, dicalcium phosphate, saccharated ferrous carbonate, salt and water, and the product is compressed into thin wafers.
Patent GB-1009790-A (GB)
Title: Improvements in maize harvesters
IPC: A01D45/02
Filed: 1963-02-27
Abstract: 1,009,790. Cutting maize. SOC. DES ETABLISSEMENTS RIVIERRE CASALIS. Feb. 27, 1963 [March 1, 1962], No. 7945/63. Heading A4C. [Also in Division A1] In a maize harvester stalks are fed by a conveyer 2 to a cutting arrangement including a blade 21 extending transversely of the machine from which the crop falls on to a conveyer 32 to be fed to a threshing cylinder and concave 35. The conveyer 2 comprises two chains having transverse members such as 4c carrying transversely extending plates such as 5c which cooperate with the cutter 21 to cut the crop. Further cutters 24, 25 in the form of rigid plates are fixed to shaft 10 which carries the sprocket wheels 8 supporting the chains of the conveyer.
Patent GB-124945-A (GB)
Title: Improvements in Speed Recorders.
Inventor: CHIPMAN WILLARD
IPC: G01P1/12
Filed: 1918-05-11
Abstract: 124,945. Chipman, W. May 11, 1918. Centrifugal speed indicators with recording-apparatus, for marking continuously the speed of a vehicle on a clock-driven chart, comprise a shaft 19 to which is pivoted a centrifugal governor 21, the weights of which engage a projection 24 of a spring-depressed sleeve 18 surrounding the shaft 19. Movement of the sleeve is communicated through a lever 26 to a recording-arm 9, a link 28 having universal joints 28 serving to connect the two. A straight-line motion is given to the recording-point by means of links 10, 11, the link 10 being carried by a bracket 13 which, together with the link 11, is carried by a pivoted disk 12. Adjustment of the pressure of the marking-point is effected by rotating the disk 12 against the influence of a spring 15, the movement being limited by a shoulder, and a pin engaging a slot in the edge of the disk. A spring drum 3 is employed to draw the record-sheet over a toothed, clock-controlled roller 5. The arrange ment of the device is such that the centrifugal governor is situated behind the plane of the record-sheet.
Patent GB-607283-A (GB)
Title: Improvements in packing for gas or vapour and liquid contacting apparatus
IPC: B01J19/32
Filed: 1945-03-29
Abstract: <PICT:0607283/III/1> A catalytic packing for liquid and gas or vapour contacting apparatus comprises a series of flat vertical sheets in face-to-face contact, each formed of one integral piece and having a lattice of regularly arranged lozenge- or diamond-shaped openings. Sheet 16 of metal or plastic are formed like expanded metal by providing closely adjoining parallel slits in a sheet blank and expanding the blank to form diamond-shaped openings 17, the sheets then being rolled.  Adjacent sheets are desirably relatively displaced so that each opening is divided by adjoining sheets into four rhombus spaces 22.  Adjoining sheets may be welded together at points of contact 24 of the sheet elements which form additional liquid mixing zones; some sheets may be vibrated edgewise to prevent clogging or promote turbulence.  The packing may be of or carry nickel, copper or other catalytic material or support a viscous catalytic liquid such as phosphoric acid.  Specification 607,284, [Group XII], is referred to.
Patent GB-1286605-A (GB)
Title: Method for the stabilization of dichlorobutenes
IPC: C07C17/42
Filed: 1969-08-20
Abstract: 1286605 Stabilization of dichlorobutenes DENKI KAGAKU KOGYO KK 20 Aug 1969 [20 Aug 19681 8026/71 Divided out of 41639/69 Heading C2C 3,4-Dichloro-butenel and/or 1,4-dichlorobutene-2 are stabilized by addition of (a) an amine which does not contain a sulphur atom, other than an aminophenol, or (b) N-nitro-N- methyl-aniline or urea. Amines specified are p-phenylene diamine, diphenylamine, benzidine and α-naphthylamine.
Patent GB-935393-A (GB)
Title: Improved polyether compositions
Inventor: AITKEN ROXBURGH RICHMOND
IPC: C08G18/28
Filed: 1961-03-06
Abstract: Polyethers are stabilized against oxidation by a zinc dialkyldithiocarbamate or diaralkyldithiocarbamate wherein the alkyl groups each contain at least 9 carbon atoms, preferably not more than 18 carbon atoms.  Specified alkyl groups are 3,5,5-trimethylhexyl, n-dodecyl, nhexadecyl, octadecyl, and benzyl.  The polyethers, which are either straight or branched chain, may be hydroxyl ended polymers or copolymers of cyclic ethers, those specified being epichlorohydrin, tetrahydrofuran, oxacyclobutane and substituted derivates thereof, and 1:2alkylene oxides, e.g. ethylene oxide, 1,2-propylene oxide, 1,2-butylene oxide, and 2,3-butylene oxide, and condensates of alkylene oxides with active hydrogen containing compounds.  The proportion of zinc dialkyldithiocarbamate may be from 0,05 to 5% by weight of polyether, preferably 0,1 to 0,5%.  The zinc dialkyldithiocarbamate may be used in conjunction with other antioxidants, those specified being sterically hindered phenols, amines, phenothiazine, and esters of phosphorus acid.  In the examples, (1) a condensate of propylene oxide and diethylene glycol is stabilized with zinc dinonyl dithiocarbamate and 2-a -methylcyclohexyl-4,6-dimethylphenol; (2) polypropylene glycol, of molecular weight 2,000, is stabilized using zinc dinonyl dithiocarbamate; (3) and (4) polypropylene glycol, of molecular weight 2,000, is stabilized with zinc dinonyl dithiocarbamate and 2-a -methylcyclohexyl-4,6-dimethyl phenol. Polyurethanes are prepared from the stabilized solutions prepared in the examples by reacting with 2,4- and 2,6-tolylene diisocyanates.ALSO:Zinc dinonyl dithio carbamate, used to stabilize polyethers (see Group IV(a)), is prepared by reacting dinonylamino (3 : 5 : 5-trimethylhexylamine) with carbon disulphide in the presence of sodium hydroxide, followed by reaction with zinc acetate.  The product is recrystallized from ethanol.
Patent GB-942895-A (GB)
Title: Improvements in or relating to hydrogen thyratron switches
Inventor: MENOWN HUGH
IPC: H01J17/56
Filed: 1961-03-06
Abstract: 942,895. Thermionic valves. ENGLISH ELECTRIC VALVE CO. Ltd. Sept. 26, 1961 [March 6, 1961], No. 8058/61. Heading H1D. A hydrogen thyratron switch comprises a cathode 7, an apertured electrode 5, a control electrode 4, an apertured baffle 3 and an anode 1. This switch has a high rate of discharge build-up and a long recovery time, as compared with switches having baffles between cathode and control electrode, and acts more efficiently in a pulse modulator to limit reverse voltages at the end of the main pulse. As shown, electrode 5 and baffle 3 form part of a metallic structure 8 which encloses electrodes 1, 4 and 7. The control electrode 4 comprises a strip of approximately the same size and shape as the aperture in baffle 3. The aperture in disc electrode 5 is dimensioned to permit electrons to be drawn therethrough in sufficient number to give rapid discharge build-up without permitting spurious ionization in the interpulse period.
Patent GB-625897-A (GB)
Title: An improved hydraulic servo-motor device for piloting aircraft
IPC: B64C13/24
Filed: 1946-03-15
Abstract: 625,897. Fluid-pressure servomotor control systems. BOYSSON, J. B. A. DE. March 15, 1946, No. 8086. Convention date, March 28, 1944. [Class 135] A hydraulic servo-mechanism for actuating aircraft control surfaces comprises a variable delivery pump 19 for supplying pressure fluid to a jack 22 and a floating lever 5 connected at one end through a second lever 13 to the control surface at 16, at an intermediate point to the pump, and at the other end to the control handle 1. Movement of the latter displaces the lever 5, which is pivoted at 6 on the lever 7, about the fulcrum 10, so as to move the pump control-rod 18. Fluid is pumped to the jack 22, which moves and in so doing reduces the pump output to zero by recentring the levers 5 and 7. Feel is conveyed to the control handle through the small jack 26. The pump 38 supplies pressure fluid for retracting spring-loaded plungers 41-44. If both pumps are driven by the same electric motor, then the servomotor will be put out of action when the motor stops, and the plunger 41 returns to open spring- loaded valves 32, 33 by means of the cam 36 so as to short-circuit the pump 19 and the jacks, and the plungers 42-44 centre and lock the lever 7. The control surface may then be actuated directly by the handle 1 through rod 4, lever 5, rod 11, lever 13 and rod 16. The pump 38 also makes up any leakage of pressure fluid by pressurisation of the suction side of the hydraulic circuit through a floating double valve 35.
Patent GB-271982-A (GB)
Title: Improved device for preventing unauthorised use of motor vehicles
IPC: B60R25/04
Filed: 1926-03-24
Abstract: 271,982. Mauborgne, C. March 24, 1926. Locks, permutation; stud-and-slot fastenings; fastenings operated from a distance.-A combination lock for the door of a casing enclosing various controls of a motor vehicle comprises a knob 49, Fig. 2, and a dial 50 on a shaft 40, upon the bush 40<a> of which are frictionally mounted discs 42, 43. A cam 41 is mounted on the shaft 40 and is adapted to rotate the discs through the medium of pins 95, 96 carried each in one of a series of holes in each disc. The door latch 52, Fig. 10, is actuated by a lever 57 pivoted at 58 by means of a pin 81. When a knob 72 on a stem 69 is turned the key 66 contacts with a flange 65 on the lever 57, which carries a lever 84 pivoted at 83. In the normal position a flange 86 on the lever 84 is confined between a screw 87 and the edges of the discs 42, 43. If, however, by a correct manipulation of the knob 49 slots 45, 46 on the discs are brought to register with the flange 86 the lever 57 descends and withdraws the latch 52. The combination of rotations of the knob 49 depends upon the location of the pins in the series of holes in the discs. In the position shown a spring-pressed hook 75 retains the latch. To lock the door the knob is turned until the hook is forced by by the cam 41. If the knob 49 is not operated first by an authorized person the lever 57 will not turn to the required extent but only sufficiently to allow an electric contact device 91, 92 to be closed and thus sound an alarm, and this will continue even if the knob 72 be turned back. The bonnet fastening is shown in Fig. 17, the cable 115 being connected to the free end 139 of the lever 133 in the casing, Fig. 2. When the cable is pulled by means of a push 132 the catch 130 is disengaged from an arm 125 secured to the bonnet and is retained by a subsidiary catch 143 in a casing 120 on the frame. The bonnet may then be raised.