baber/WOPTO huggingface dataset:
Patent GB-886991-A (GB)
Title: A process for the isomerisation of para dibromobenzene to meta dibromobenzene
IPC: C07C17/358
Filed: 1960-04-19
Abstract: A process for the preparation of a mixture of dibromobenzenes rich in the meta isomer comprises contacting p-dibromobenzene in the liquid phase with an aluminium trihalide as catalyst wherein the halogenated atoms are chlorine or bromine or both, maintaining the mixture at a temperature between 85 DEG C. and 175 DEG C. for a period of time at least until the dibromobenzene isomers are substantially in equilibrium and cooling the mixture to a temperature below 50 DEG C. Catalysts specified include aluminium tribromide, trichloride, dibromochloride and dichlorobromide. Aluminium tribromide containing iron and copper bromides may be employed.  The p-dibromobenzene and the catalyst may be dissolved in a common solvent.  The catalyst is preferably used in a substantially dry state.  The process may be continuous.  In examples p-dibromobenzene is isomerised in the presence of aluminium bromide with and without cupric bromide.
Patent GB-543231-A (GB)
Title: A system of converting lorries and cars into endless track tanks
IPC: B60P3/42
Filed: 1940-08-31
Abstract: 543,231. Converting lorry to endless-track tank with armoured body. MORRISON, C. B. Aug. 31, 1940, No. 13683. [Classes 79 (i) and 79 (iii)] [Also in Group XXI] An endless-track armoured vehicle or tank converted from a car or lorry chassis is provided with a reinforced concrete body consisting of precast roof R, floor I, and four sides, the latter being formed with interlocking teeth J, K, all six parts being secured together by bolts G at the comers passing through the teeth J. K. The body sections may be connected together, or rubber slabs may be inserted between the teeth J. K. The body may be formed with one or two compartments and is provided with manholes O, Q, and loop-holes L. N. A gun (not shown) is mounted on a pivot pin P on the top of a steel pedestal bolted to the chassis frame. Girders F are interposed between the floor I and the chassis frame E, bolts G and H securing all these parts together. The steering wheels B of the car or lorry are locked in the straight-ahead position by means of a bolt securing the track rod to the front axle. Rubber tyres on the front and rear wheels B, A are replaced by steel tyres formed with sprocket teeth S to engage endless tracks D. Two or more pairs of additional wheels C are connected to the frame through springs (not shown). The hand-brake handle is connected to the left-hand brakes and the brake pedal to the right-hand brakes, steering being effected by braking one side or the other. According to the Provisional Specification the body may be of steel plate and comprises a round revolving gun turret and a rectangular driver's cab.
Patent GB-120038-A (GB)
Title: Turbine.
IPC: F01D1/02
Filed: 1918-08-23
Abstract: 120,038. Westinghouse Electric & Manufacturing Co., (Assignees of Schmidt, H. F.). Oct. 18, 1917, [Convention date]. Void [Published under Sect. 91 of the Act] . Circular-flow type; reversing.-A flanged rotor 5 has peripheral buckets 8 formed on the inner face of the flange 7, and the motive fluid is delivered from one or more nozzles 11 on one side of the buckets and discharged from the other side into re-directing chambers 12 having guide-vanes 12<a> which return the fluid to the buckets, through which it flows a second time and in a reverse direction from that of its first passage through them. An additional set of buckets may be formed on the outer face of the Range, and may face in an opposite direction to the first set so as to be suitable for reversing.
Patent GB-288049-A (GB)
Title: Process for the separation of tin from alloys and mechanical mixtures
IPC: C22B25/06
Filed: 1927-05-23
Abstract: 288,049. Bischitzky, F. May 23, 1927. Precipitating.-Tin is dissolved from its alloys or mechanical mixtures such as lathe turnings, composition dross, &c. by treatment with hydrochloric acid containing as catalysts, dissolved salts, which have no oxidizing action, such as chlorides, sulphates, phosphates or borates, paxticularly those with a high ionization constant such as calcium chloride, sodium sulphate, or magnesium chloride. The solutions obtained are used to treat fresh quantities of metal. Metallic copper and antimony are precipitated from the solution in a form which can be washed from the undissolved granules.
Patent GB-652118-A (GB)
Title: Improvements relating to devices for sharpening the rotary cutters of lawn mowers and the like
IPC: B24B3/42
Filed: 1949-05-02
Abstract: 652,118. Sharpening lawn-mower blades. M. L. ENGINEERING CO., Ltd., and MOBBS, E. N. May 2, 1949, No. 13852/48. Class 60] A sharpening device for the rotary cutters of a lawn mower or the like comprises an abrasive member or stone carried by one or more resilient arms having securing means for attachment to a non-rotatable part of the lawn mower, the arm or arms serving the duel purpose of carrying the abrasive member or stone and at the same time resiliently urging the latter into contact with the rotary cutters, adjustable means being provided for varying the pressure exerted by the resilient arm or arms urging the abrasive member or stone into contact with the rotary cutter. An abrasive stone 13, approximately the same length as the blades 14 of the rotary cutter 11, is mounted in a sheath 15 having welded or otherwise secured thereto a pair of spaced arms 21, each secured to one of a pair of arms 16 by screws 23; each arm 16 has a series of holes 22, or a longitudinal slot, to receive the screws 23 to permit adjustment. The arms 16 are resilient and each has at one end a bracket 17 clamped on a spacer bar 12 of the mower by a clamping screw 18 provided with a locking nut 20. Each bracket 17 has an arm 24 through which is threaded a screw 25, with locking nut 26, engaging the arm 16 so as to adjust the pressure of the abrasive stone on the blades. When not required, the attachment is either removed or swung about the spacer bar 12 to an inoperative position.
Patent GB-273456-A (GB)
Title: Improvements relating to adjustable windows particularly for automobiles
IPC: E05F11/38
Filed: 1926-06-02
Abstract: 273,456. Rawlings Manufacturing Co., Ltd., and Plummer, H. T. June 2, 1926. Holders for sliding windows. - A window holder for use with window operating or balancing means, particularly of vehicles, consists of one or more eccentric or cam-shaped sleeves 5 mounted on a member rotated by the rising and falling window, such as the spindle of the spring balancing drum 3, and adapted to be engaged with the sliding panel by the frictional drag of the rotating spindle with or without gravity assistance. The sleeve may be rubber-covered and is manually released bv a handle 6. The rail, against which the glass abuts, is padded at 7. The spindle passes through slotted brackets in the frame into screw adjusted beaming blocks.
Patent GB-1216774-A (GB)
Title: Heat exchanger utilising an intermediate liquid heat carrier
IPC: F28C3/06
Filed: 1968-03-22
Abstract: 1,216,774. Regenerative heat exchangers. SOC. GRENOBLOISE D'ETUDES ET D'APPLICATIONS HYDRAULIQUES. 22 March, 1968 [24 March, 1967], No. 13998/68. Heading F4K. In a system for heat exchange between a hot gas and a cold gas, an intermediate heat carrier fluid, e.g. liquid or fluidized material is placed in direct contact (e.g. in a chamber 1 or 3) with at least one of said gases by bubbling the gas through the fluid which bubbling action also circulates the fluid through the system. In the apparatus shown in Fig. 2 the gas A to be heated enters the chamber 3 through nozzles 4 and bubbles through a liquid heat carrier therein causing the level to rise and overflow through duct 13 leading to a chamber 1 into which is injected through nozzles 2 a stream of heating gas F. Overflow liquid from chamber 1 is carried through duct 12 to chamber 3 to complete the cycle. The respective gases separate out of the liquid to the upper part of the chambers 1 or 3 from which they are removed at 5 and 6. If the nature of the gases is such that they cannot be brought into contact with the same liquid, then a circuit using two heat carrier liquids may be utilized. The liquids then chosen are immiscible and of different densities and a further chamber is utilized in which the two heat carrier liquids are brought into contact for heat exchange with one another and subsequent separation due to their differing densities (Fig. 3, not shown). Fig. 5 shows a further arrangement utilizing two heat transfer chambers 14, 15 in the flow of a gas A to be heated and two heat transfer chambers 16, 17 in the flow of a hot gas F. One liquid heat carrier circulates between chambers 15 and 16 in a circuit f 2 , and another liquid heat carrier circulates between chambers 14 and 17 in a circuit f 1 . Alternatively one liquid only, may traverse the four chambers. The gas A after compression and subsequent heating in passing through chambers 14 and 15 passes to an MHD generator 35 the exhaust gases from which after giving up heat in chambers 16 and 17, are utilized in a steam power unit 37.
Patent GB-584519-A (GB)
Title: Improvements relating to the manufacture of alternating current rectifiers of the selenium type
IPC: H01L21/105
Filed: 1944-07-24
Abstract: 584,519. Asymmetrically-conducting resistances. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., THOMPSON, L. E., and GARROD, K. A. July 24, 1944, No. 14088, [Class 37] To improve the reverse resistance and critical voltage values of a selenium coated rectifier element the element is immersed in a bath containing lithium hydroxide of which the concentration at'the element surface is greater than 100 gms. per litre, which is normal for sodium hydroxide baths. The solution may be saturated or dilute in which latter case the element is connected to an electric supply as the negative pole of an electrolytic cell so forming a concentrated layer of lithium hydroxide solution on the element surface. The preferred counter-electrode used contains or is composed of lithium. Specifications 529,791 and 532,961 are referred to.
Patent GB-760988-A (GB)
Title: A two-stage balanced impedance convertor amplifier circuit arrangement
IPC: H03F3/36
Filed: 1954-05-13
Abstract: 760,988. Valve amplifying circuits. LEMOUZY, J. A. May 13, 1954 [May 18, 1953], No. 14092/54. Class 40(6) A measurement amplifier possessing high input and low output impedance comprises a pair of pentodes 1, 3 direct coupled to a pair of cathode-follower output triodes 2, 4. The input is applied to terminals 12, 13, i.e. between the grid of the pentode 1 and the cathode of the triode 2, while the grid of the pentode 3 is directly connected to the cathode of the triode 4. The pentodes 1, 3 have a common cathode resistor 5 and the screen-grid of each is returned over a resistor 34, 35 respectively to an intermediate point on the anode load resistor of the other. In addition, the screen-grids are connected together through a resistor 30 shunted by a condenser 31. The grid of each of the output triodes 2, 4 is connected to its cathode via a resistor 32, 33 respectively. In a modification which allows for adjustment of the sensitivity (Fig. 3, not shown) the input terminal 13 is connected to a tapping point on a potentiometer across the cathodes of the output triodes 2, 4. The arrangement may be used as a current amplifier of zero input resistance (Fig. 4, not shown), a resistor being shunted across the terminals 12, 13 and the input applied between terminal 12 and the cathode of the valve 4. By replacing the resistor with a condenser, an integrating circuit is obtained (Fig. 5, not shown).
Patent GB-906161-A (GB)
Title: Galvanic cell
IPC: G01N27/49
Filed: 1960-04-22
Abstract: 906,161. Electrolytic testing apparatus. BECKMAN INSTRUMENTS Inc. April 22, 1960 [May 28, 1959], No. 14116/60. Class 37. A galvanic cell, for the measurement of a specific gas in a gas sample by the measurement of cell current, includes a first electrode of a material inert to the electrolyte, a second electrode electro-chemically reactable with the electrolyte only when the gas is present at the first electrode, and means for producing a stream of the gas through the cell, and a continuous flow of the electrolyte over the first electrode. The gas passes from the housing 11, Fig. 1, via inlet 20 into the space between part 16 and the container 15, which latter holds a pool of electrolyte 45. A separator 37, porous to the electrolyte but not to the gas, is held in place over the sheet-metal second electrode 36 and the apertures 30 by the wire coils 38, which constitute the first electrode. The gas flow up the riser tube 31 carries some electrolyte with it and produces a steady flow of electrolyte through apertures 30 and down over electrode 38, the gas leaving by exit 28. An absorbent separator may be provided with tabs 48 to increase the electrolyte pumping rate. In a modification, Figs. 3 and 4 (not shown), a porous sleeve-e.g. porous carbon-overlays the inner ends of apertures 30, making it unnecessary for the separator 37 to extend up over the outer ends. In a further modification, Fig. 6, the second electrode lies at the bottom of container 15. A second embodiment, Fig. 5, employs rotation of the complete cell 60, or of the structure 80, on the shafts 61 and 62, within which gas entry and exit passages are provided, thereby dipping the first electrode 71 in the pool of electrolyte 76. Alternatively the cell 60 or the structure 80 may be oscillated. Clogging of the separator, in the case of oxygen analysis, by precipitation of the oxides of the dissolved second electrode may be prevented by removing the electrode metal ions from solution by plating them on to one of a pair of energized electrodes mounted in chamber 27, or by the inclusion in the electrolyte pool, possibly in the form of an amalgam, of a metal more electropositive than the anode and which yields only soluble compounds. Formamide or dimethyl formamide may be used as electrolyte solvent instead of water for the analysis of oxygen in boron hydride or boron chloride, or for chlorine trifluoride. Systems of gas for analysis, cathode, anode and electrolyte referred to are:-oxygen, silver, lead, potassium hydroxide solution; chlorine, platinum, silver, potassium chloride solution; bromine, platinum, silver, potassium bromide solution; nitrogen dioxide, silver, lead, acid-e.g. nitric acid; hydrazine, silver, platinum, silver nitrate solution; sulphur dioxide (cathode reaction), platinum, lead, potassium chloride solution; sulphur dioxide (anode reaction), gold, platinum, gold chloride and potassium chloride solutions.
Patent GB-665181-A (GB)
Title: Improvements relating to thermal overload cut-outs for electrical apparatus
IPC: H01H81/02
Filed: 1949-05-26
Abstract: 665,181. Thermal switches; snap-action switches. HOOVER (ELECTRIC MOTORS), Ltd., and STARKEY, C. V. May 12, 1950. [May 26, 1949] No. 14119/49. Class 38 (v). A switch especially for opening the circuit of a motor on excessive temperature or high current, comprises a bimetal strip 10, heated by the current, and contacts 11, 12, the latter and the bimetal 10 being carried by overlapping metal strips 13, 14, which are rigidly connected together by rivets 15, 16, and are insulated from each other by washers 17 ... 20. The bimetal 10 is welded to a tongue 21 on strip 14 and carries a T-shaped member 28 supporting a trifurcated blade spring 22 carrying the contact 11, the opening movement of which is adjustable by a screw 32 so as to set the temperature at which the bimetal recloses the contacts. The contacts may, alternatively, be reclosed by a push-button. The strips 13, 14 are fixed to the casing 25 by lead-in terminals .24, and the fixed contact 12 is formed by the head of a screw received in rivet 16.
Patent GB-1205192-A (GB)
Title: Double-plate friction clutch
IPC: F16D13/69
Filed: 1969-03-18
Abstract: 1,205,192. Friction clutches. FICHTEL & SACHS A.G. 18 March, 1969 [23 March, 1968], No. 14163/69. Heading F2C. In a friction clutch for a motor vehicle wherein two driven discs 5a, 5b are normally clamped between a flywheel 7, intermediate plate 9 and presser plate 3 by springs 30 and the intermediate plate 9 is moved away from the flywheel 7 by springs (20) during clutch disengagement effected by radial release levers 4, axial separation of the intermediate plate 9 and flywheel 7 during clutch disengagement is automatically adjusted to take up wear by an abutment plate 15 frictionally connected to the intermediate plate 9 and co-operating with abutment surfaces 32, 33 fast with the flywheel 7. As shown, each abutment plate 15 is held by a spring 11 between friction plates 12 carried by a pin 14 connected to the intermediate plate 9 by a bracket 10. The force of the spring 11 is such that it permits the abutment plate 15 to move relative to the plate 9 to take up wear when the plate 15 engages the abutment 33 during clutch engagement but prevents movement of the plate 15 relative to the intermediate plate 9 when the plate 15 engages the abutment 32 under the action of the springs (20) during clutch disengagement. In Fig. 7 (not shown), the pins 14 are omitted and the abutment plate 15 is held between friction discs (12<SP>1</SP>) carried by the intermediate plate 9 and bracket (10<SP>1</SP>).
Patent GB-1179452-A (GB)
Title: Improvements in or relating to Memory Storage Elements
IPC: H01F10/32
Filed: 1967-03-29
Abstract: 1,179,452. Magnetic storage devices. SIEMENS A.G. 29 March, 1967 [31 March, 1966], No. 14193/67. Addition to 1,100,703. Headings H1H and H1T. The magnetic storage element comprising a stack of thin film magnetic layers separated by the thinner intermediate layers of non- magnetic material as described in Specification 1,100,703, is modified by using magnetic layers having a preferred axis of magnetization and intermediate insulating layers of non-uniform thickness. The intermediate layers may be formed of silicon monoxide or silicon dioxide and be between 10  and 20  thick.
Patent GB-854108-A (GB)
Title: Blow moulding high molecular weight thermoplastic polycarbonates
IPC: C08L69/00
Filed: 1957-05-03
Abstract: Bottles, containers and other hollow articles are made by the blow-moulding of certain thermoplastic polycarbonates.  These polycarbonates have a k-value of at least 30, measured in 0,5% methylene chloride solution at 20 DEG C., and are based on (a) di-(monohydroxyaryl)-alkanes, if desired in admixture with other dihydroxy compounds or (b) di-(monohydroxyaryl)- sulphones, or (c) mixtures of other aromatic dihydroxy compounds and aliphatic or cycloaliphatic dihydroxy compounds.  In an example the polycarbonate of 2,2-(4,41-dihydroxydiphenyl)-propane is blow-moulded to produce a bottle.  Specifications 772,627, 808,485, 808,486, 808,487 and 808,489 are referred to.ALSO:Bottles, containers and other hollow articles are made by the blow-moulding of high molecular weight thermoplastic polycarbonates derived by reacting ester-forming derivatives of carbonic acid with certain dihydric compounds (see Group IV(a)). In an example the polycarbonate of 2,2-(4,41-dihydroxydiphenyl)- propane is blow-moulded using nitrogen to produce a bottle.  Specifications 772,627, 808,485, 808,486, 808,487 and 808,489 are referred to.
Patent GB-1121583-A (GB)
Title: Improvements in large area constructional elements
IPC: E04C2/26
Filed: 1966-03-31
Abstract: 1,121,583. Laminates; seaming non-metallic sheet material. WAGGONFABRIK TALBOT. 31 March, 1966 [3 April, 1965], No. 14276/66. Headings B5K and B5N. Large-area sandwich-type constructions are fabricated from sandwich elements joined edgeto-edge, each element having a rigid foam core with covering layers projecting beyond the core and positively connected to the corresponding projecting layers of adjacent elements so as to leave a cavity between the adjacent core edges, this being filled with material, e.g. a liquid polyurethane reaction mixture, which sets into a rigid foam. A preferred foam is homogeneous with a density of 80 kg/m<SP>3</SP>. The cover layers may consist e.g. of steel, light metal, glass fibre-reinforced resin or asbestos cement and may be of the same or different materials on opposite faces. They may have abutting, overlapping or cover-plate connections to adjacent elements secured by welding, riveting, screws, overlapped seams or adhesive (Figs. 2-9 not shown). Temporary or permanent reinforcing profiles may be used to hold joints together during bonding and filling, the holes resulting from withdrawal of holding bolts being plugged with solid foam plugs and metal stoppers. Regulation of hydrostatic pressure of the foam filling may be obtained by covering de-aerating outlets with fibrous fleece. A network of joint cavities may be filled at the same time by appropriate arrangement of air outlets.
Patent GB-541162-A (GB)
Title: Improvements in tool-holders for use in boring and like machines
IPC: B23B29/034
Filed: 1940-09-18
Abstract: 541,162. Turning. COLE, S. W., and SMART, & BROWN (ENGINEERS), Ltd. Sept. 18, 1940, No. 14311. [Class 83 (iii)] Boring &c. tool holders for use in lathes have improved clamping and guiding means for the adjustable tool block. A bifurcated head 1 has a shank 2 to engage either a rotary spindle or a tailstock. The tool is secured by a screw 12 in a seat 11 in a block adjustable by a screw 5 with a graduated collar. The block has V-formations 13 engaging corresponding formations in the head, the formations mutually engaging on the sides of the vees only. Clamping is effected by a cross screw 9 passing through a clearance slot 10 in the block and located in a mid-position relatively to the vees.
Patent GB-814669-A (GB)
Title: Improvements in or relating to data storage apparatus
Inventor: ROSE JOHN CYRIL
Filed: 1956-05-09
Abstract: 814,669. Electric digital-data-storage apparatus. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 25, 1957 [May 9, 1556], No. 14341/56. Class 106 (1). In data-storage apparatus comprising a plurality of endless record tracks a number of reading heads are arranged in relation to a plurality of quick-access tracks so that data stored in duplicate can be read off in any order and space is left to allow at least one other fixed or movable head to co-operate with one or more storage tracks adjacent the quick-access tracks. As described, the quick-access track is duplicated and immediate access is obtained by providing sixty-four reading heads to co-operate with the sixty-four-word tracks. The heads are separated into four groups 0 ... 15, 16 ... 31, 32 ... 47, 48 ... 63, Fig. 3, alternating between the duplicated tracks A and B so that space is left for stacked reading heads R1, R2, R3, R4 and writing heads W1, W2, W3, W4, which co-operate with storage tracks (not shown) lying between and adjacent to the tracks A and B. Data is written on to track A by a writing head 63 and then duplicated in track B by coupled read and write heads 15. In Fig. 4 the groups of quick-access heads are aligned so as to provide a clear space for heads R5, R6, &c. which may be of the movable type described in Specification 745,496, [Group XXXV]. Specification 707,634 also is referred to.
Patent GB-1117849-A (GB)
Title: Method of manufacturing a heat-insulating refractory concrete and product obtained by the method
Inventor: DUBOIS FREDERIC
IPC: C04B28/06
Filed: 1966-03-31
Abstract: Heat insulating refractory concrete is obtained by mixing a high alumina cement with an expanded clay and asbestos powder. Preferred grain sizes are: clay 0.3 mms. to 20 mms. and asbestos 0.1 mms. to 0.3 mms.