baber/WOPTO huggingface dataset:
Patent GB-552021-A (GB)
Title: Improvements relating to callipers of the compass type
IPC: G01B3/24
Filed: 1941-09-17
Abstract: 552,021. Calliper gauges. WILSKER, R. Sept. 17, 1941, No. 11882. [Class 106 (ii)] Comprises constructions in which pointers and scales indicate departure from the set dimensions. Fig. 1 shows an inside callipers of the type provided with a spring c and' setting screw and nut f, h. One of the legs has the usual fixed contact j while the other leg is provided with a contact k on a lever m pivoted near the end of the leg, the long arm being pressed by a spring o against a pin p on a scale n on the leg. Dimensions slightly less than the set dimension are indicated by movement of the lever, mover the scale. An outside callipers is described in which the long arm of the indicating lever is bent to conform with the leg and indicates right and left of a central zero. In a further form for an inside callipers the long arm of the lever acts on the short arm of a second lever to give increased amplification. Reference has been directed by the Comptroller to Specifications 22,153/98, 1,279/05, [both in Class 106], and 134,395, [Class 106 (ii)].
Patent GB-1175601-A (GB)
Title: Insulated-Gate Field-Effect Transistor
IPC: H01L29/06
Filed: 1967-03-14
Abstract: 1,175,601. Field effect transistors. MATSUSHITA ELECTRONICS CORP. 14 March. 1967 [28 March, 1966], No. 11893/67. Heading H1K. A multiple field-effect transistor comprises at least one intermediate region between terminal source and drain regions, the current voltage characteristics of the successive transistors each formed by an adjacent three of such regions (acting as source, gate and drain) differing from each other, whereby the same gate voltage in each case would allow successively higher currents. Fig. 1 shows an insulated gate field effect transistor comprising N-type source region 1, drain region 4 and N-type " island " region 5; two gate electrode control 2 and screen 13 control the channel regions between source-island 5 and island 5-drain 4. The arrangement resembles two transistors 1, 2, 5 and 5, 3, 4 and three suitable alternative means are described for ensuring that the saturation current of the second exceeds that of the first (for the same effective operating voltages). Firstly: the lateral dimension of the second " source " (i.e. the " island ") may be made to exceed that of the first source; or secondly the length from "island" to drain may exceed that of the source to the " island," or thirdly the pinch off voltage of the second transistor may be made higher than that of the first by providing a thicker insulating layer for the second gate region than for the first or if operation is taking place in the enhancement mode, a thinner insulating layer. The increased "source" dimension may be provided by an annular construction with the source surrounded by island and drain regions. Figures 9 and 10 show an interdigital arrangement comprising N-type regions 21, 25 and 24 in a P-type subtrate 26 forming source, island and drain regions respectively, and " control " gate 22 and " screen " gate 23 are provided over oxide layer 27, 27<SP>1</SP>. The oxide layer is made thinner (1000 ) under gate 22 than under gate 23 so that the latter has a higher effective pinch off voltage. In modifications, the oxide layer step at the change of thickness is situated at the drain end, the centre, and the source end of the "island" electrode to provide various characteristics. The semi-conductor may consist of silicon germanium, gallium arsenide, cadmium sulphide, cadmium telluride and the insulating layer of Si0 2 , SiO, magnesium fluoride or silicon nitride. More than two gate electrodes may be provided.
Patent GB-591565-A (GB)
Title: Improvements in or relating to starting apparatus for turbo-compressor propulsive units
IPC: F04D25/00
Filed: 1945-05-11
Abstract: 591,565. Starting gas turbines. DE HAVILLAND AIRCRAFT CO., Ltd., HALFORD, F. B., and MORTON, J. C. May 11, 1945, No. 11941. [Class 110 (iii)] [Also in Group XXXV] A turbine-compressor power unit is started by an electric motor the speed of which is at first limited until a pressure sufficient to cause proper atomization and ignition has been built up in the fuel supply system. This pressure then operates means which admit fuel to the burners and which also cause acceleration of the motor. The motor is disconnected from the unit when over run by the latter. The motor speed control may be by control of resistance in its armature circuit. The pressure-responsive means for controlling the flow of fuel to the burners may comprise a spring- loaded and diaphragm-mounted valve J4, Fig. 2, interposed between the fuel pump F and burner manifold K1, the valve remaining closed until the pump has built up in an accumulator G sufficient pressure for proper ignition. Fuel then passes to the burner manifold where its pressure closes diaphragm operated contacts M which cause the removal of resistance from the armature circuit of the motor and consequential acceleration of the unit. Valve J4 remains open due to the fuel pressure now acting on its diaphragm, but its closure, in event of the pressure falling-for instance when the unit is idling, may, if desired, be prevented by a latch. In a modified arrangement the contacts M are actuated by movement of the valve J4.
Patent GB-973618-A (GB)
Title: Process for producing 1-nitronapththalene
Inventor: DUVALMA MIRCEA
IPC: C07C205/06
Filed: 1963-03-26
Abstract: 1-Nitronaphthalene is produced by nitrating naphthalene with a mixture comprising 20-32% nitric acid, 45-65% sulphuric acid and 15-27% water.
Patent GB-277255-A (GB)
Title: Improvements in electromagnetic wave reception devices
IPC: H04B1/16
Filed: 1927-05-05
Abstract: 277,255. Butterworth, F., and Butterworth, W. May 5, 1927. Receiving sets, construction of; thermionic amplifiers and detectors.- The non-adjustable capacities, resistances, and inductance coils of a receiving-set are arranged in a case as a separate unit, with terminals for connection to the rest of the apparatus. The case 1, Fig. 1, may enclose aerial and reaction coils 3, 4, fixed condensers 7, 8, 9, grid leak 6, a choke coil 5. A row of terminals 2 afford the necessary external connections. A suitable singlevalve detector circuit is shown in Fig. 2, the non-adjustable elements 3 - - 9 being numbered as in Fig. 1. The reaction coil 4 is connected to the valve plate through the fixed condenser 9, and reaction is controlled by a variable condenser 14 on the earth side of the coil.
Patent GB-763206-A (GB)
Title: Polyhydrophenanthrene compounds
IPC: C07D317/72
Filed: 1953-03-18
Abstract: The invention comprises (1) dodecahydrophenanthrones of formula <FORM:0763206/IV(b)/1> in which the 7-position is occupied either by a divalent group (e.g. a cyclic ketal group) or a pair of univalent groups (e.g. a non-cyclic ketal group) both types being convertible to a single keto group by acid hydrolysis; (2) decahydrophenanthrones of formula <FORM:0763206/IV(b)/2> in which the 7-position is occupied by a univalent group (e.g. an end ether group) convertible to keto by acid hydrolysis; (3) dodecahydrophenanthrones of formula <FORM:0763206/IV(b)/3> wherein, in each formula, R1 is a keto, hydroxy or acyloxy group.  The compounds are prepared by reacting compounds of formul  <FORM:0763206/IV(b)/4> <FORM:0763206/IV(b)/5> wherein R2 is an acyl or carboalkoxy group, with a base and, if desired, subjecting the products to acid hydrolysis.  Preferred starting materials are those described in Specification 763,205. The R2-substituent is preferably cleaved by heating a solution of the compound with an alkali metal hydroxide, carbonate or bicarbonate, or by chromatographing it over basic alumina. Products having a 4-acyloxy substituent may be hydrolysed to the corresponding 4-hydroxy compounds, and the latter may be oxidized to the corresponding 4-keto compounds by treatment with a pyridine/chromium trioxide complex as described in Specification 733,808.  The examples describe the preparation of 2:4b - dimethyl - 7 - ethylenedioxy - 1 : 2 : 3 : 4 : 4a : 4b : 5 : 6 : 7 : 8 : 10 : 10a - dodecahydrophenanthrene - 4 - ol - 1 - one and - 1 : 4 - dione; 2 : 4b - dimethyl - 1 : 2 : 3 : 4 : 4a : 4b : 5 : 6 : 7 : 9 : 10 : 10a - dodecahydrophenanthrene-4-ol-1 : 7-dione and - 1 : 4 : 7-trione; and modifications thereof, prepared by passing a solution of compounds resulting from hot alkali cleavage, or from chromium trioxide treatment, over basic alumina, or by boiling compounds resulting from chromium trioxide treatment with methanolic potassium carbonate. Specifications 763,203 and 763,208 also are referred to.
Patent GB-626603-A (GB)
Title: Improvements in or relating to solutions for modifying surface reflection
IPC: C03C17/25
Filed: 1945-07-03
Abstract: 626,603. Surface reflection coatings. AMERICAN OPTICAL CO. July 3, 1945, Nos. 12136/48 and 12137/48. Convention dates, Nov. 22, 1943 and Nov. 6, 1944. Divided out of 626,524. Drawings to Specification. [Class 97 (i)] A solution for modifying the surface reflection characteristics of an article consists of a volatile water miscible organic solvent containing an alcohol and to which has been added 1 to 10 per cent by weight of tin or titanium tetrachloride; the solution may also contain tetraethyl ortho-silicate and hydrochloric acid. The solution is described as used in the process described in Specification 626,524, and the whole of the description is contained in Specification 626,524.
Patent GB-738870-A (GB)
Title: Rocket suspending and launching means, more particularly for aircraft
IPC: B64D1/04
Filed: 1953-05-01
Abstract: 738,870. Aerial warfare. BREVIN AKT.- GES. May 1, 1953 [May 6, 1952], No. 12157/53. Class 9(2). A rocket having a warhead 3 attached to the body 2 on which a tail unit is slidably arranged is suspended beneath the wing 1 of an aircraft. The tail unit comprises four fins 4 mounted on a sleeve 6 placed forwardly on the rocket prior to launching and located by pins 7 on the rocket. In the trailing edge of each fin is a notch 8 to engage a suspension rod 9, Fig. 4, projecting from a vertical member 10 on the lower side of the wing 1. After launching, as the rocket moves forwardly, the tail unit slides on the body 2 until it contacts holding means 2a which may be the flared end of the body 2. Prior to launching the rear end of the rocket is supported from the wing by a pivotted arm 12, Fig. 5, which engages the base plug 11, a locking nut 16 being screwed on to an extension 15 of the plug to prevent forward movement of the rocket. The extension 15 has a reduced section a to form a line of fracture. The rocket is ignited electrically and the leads 17 extend along the arm 12 to enter the rocket through the extension 15. On ignition of the propellant, the rocket moves forward fracturing the extension 15 and the arm 12 swings rearwards due to fluid pressure and the action of the spring 14. As the rocket moves forwardly the tail unit 4 becomes wedged on the stop 2a and the fins are disengaged from the rods 9. In a modification several rockets A, B, C are arranged in a vertical row beneath the wing 1, the rockets being suspended forwardly from the tail unit of the rocket next above and supported at the rear by a common arm 12, Fig. 6. Each fin is provided with a stud 18 projecting from its leading edge which is adapted to engage a sleeve on the trailing edge of the fin of the rocket below. The vertical row of rockets may be retractable within the wing 1. Reference has been directed by the Comptroller to Specification 610,685.
Patent GB-1014752-A (GB)
Title: Improvements in or relating to thin film magnetic members
Inventor: CLOW HUGH
IPC: G11C11/14
Filed: 1961-04-06
Abstract: 1,014,752. Magnetic storage devices. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 19, 1962 [April 6, 1961], No. 12295/61. Heading H1T. [Also in Division H3] To avoid indeterminacy of the easy axis of magnetization of a thin film magnetic core it is formed of two thin films such as 5 and 6 carried on different substrates 1, 2 which are positioned with their magnetic films in face-to-face contact or very close together and their easy axes substantially parallel, the address and digit conductors 3, 4 being disposed under the thin films 5, 6. Substrates 1 and 2 and the films thereon may be separated by an insulating layer or layers. The conductors may be narrowed between the films, and may have terminal portions 7. Conductors on one substrate may be connected in series with corresponding conductors on the other. Methods of forming the printed conductors and the magnetic films are described. The magnetic films may be rectangular or each substrate may be covered by a continuous film.
Patent GB-1073608-A (GB)
Title: Linearity correction circuits for cathode ray devices
IPC: H04N3/23
Filed: 1965-03-23
Abstract: 1,073,608. Transistor sawtooth circuits; cathode-ray tube circuits. RADIO CORPORATION OF AMERICA. March 23, 1965, No. 12331/65. Headings H3T and H4T. In a deflection circuit for a cathode-ray tube, the deflection current is linearized by the use of an auxiliary waveform developed across a capacitor, discharged resonantly during the flyback period. As shown, the power supply to the output transistor 100 is controlled by transistor 102, a sawtooth current being provided in deflection coils 12. A capacitor 150 is charged from supply 142 during each sweep and discharged during each flyback period via transistor 166 and inductor 152. The waveform so produced is added by transformer 158 to the deflection current in coils 12 so as to impress the linearity. Inductor 152 and capacitor 150 are tuned to a frequency having a period equal to twice the flyback duration. A centring circuit 144, 146 is provided. The peak voltages are minimized by tuning 120 and 122 to the third harmonic of the deflection signal frequency. A damping diode 118 and voltagelimiting Zener diodes 116 are provided. In Fig. 1 (not shown) details 102 and 158 are omitted.
Patent GB-367632-A (GB)
Title: Work guiding devices for sewing machines
IPC: D05B35/06
Filed: 1931-04-27
Abstract: 367,632. Sewing-machines. SINGER MANUFACTURING CO., Elizabeth, New Jersey, U.S.A. April 27, 1931, No. 12351. Convention date, Aug. 30, 1930. [Class 112.] Work guides.-A pair of work guiding devices are so mounted on a sewing machine that when one is moved into operative position from one side of the line of seam formation the other is moved into operative position at the opposite side of the line of seam formation, and vice versa. As shown, a strip folder 57 for preparing folded belt-loop strips and an edge folder 50 for preparing belt-loop strips substantially wider than those prepared by the folder 57 are mounted on an attachment plate 41 secured upon the cloth plate of the machine and operatively connected at the opposite ends of a bar 43 slidable, to bring either folder into operative position, in guides 42. The folder 57 forms a complete loop strip in one passage through the machine, whereas, in the case of wider loop strips, with the folder 50 one edge at a time is folded, the work being reversed and passed through the machine a second time. The edge folder 50 comprises an apron and scroll 51 and is adjustably mounted on the bar43 to the left on the line of seam formation and is disposed, when in operative position, with the scroll 51 directly in front of the presser foot 8. The strip folder 5 comprises a channelshaped member with upturned guide lips 58 at its work receiving end merging into confining wings 59 leading to a guide tube 60 at the delivery end of the device. A rectangular spacing block 61 is inserted in the outer end of the channel and terminates in a spring tongue 62 at the delivery end freely suspended in the tube 60 and supported on a rib 63 rising from the bottom of the tube. The folder 57 is adjustably mounted on a bracket plate 53 pivoted to an ear 52 on the plate 41 and having a cam slot 67 engaged by a pin 66 on a plate 65 secured to the slide bar 43. Guide fins 19, 20 are spring-pressed to slide in grooves 18 in a foot-plate 9 having a needle aperture 17 and which is pivotally secured to the shank 8 of the presser foot, and one or both of these fins may be raised and lowered into operative position when the folder 57 is operative.
Patent GB-1531023-A (GB)
Title: Method and means for shaping containers from a tube which is formed of a material which can be welded by the application of heat and pressure
IPC: B29C65/02
Filed: 1976-03-26
Abstract: 1531023 Form-fill apparatus PAPETERIES DE BELGIQUE 26 March 1976 [27 March 1975] 12398/76 Heading B8C An apparatus for transversely welding and severing a liquid filled tube 1 to produce individual filled containers comprises two series of half-moulds 2, 2<SP>1</SP> which move downwardly with the tube 1 to shape the latter, and upper and lower welding and severing jaws 17, 17<SP>1</SP> and 18, 18<SP>1</SP> which move downwardly with the tube while effecting transverse welding and severing operations, the jaws 17, 17<SP>1</SP> and 18, 18<SP>1</SP> operating to weld and sever the tube at respective alternate locations between moulds 2, 2<SP>1</SP> so that the tube 1 is firstly welded and severed by the upper jaws 17, 17<SP>1</SP> to produce separated pairs of communicating containers and then the communication between these containers is closed and the containers of the pairs are separated from one another by the lower jaws 18, 18<SP>1</SP>. The halfmoulds 2, 2<SP>1</SP> which are carried on chains 3, 3<SP>1</SP> are movable towards and away from one another to adjust the capacity of the containers being produced. The ends of the jaws 17, 17<SP>1</SP> and 18, 18<SP>1</SP> are configured to correspond to upper and lower angular parts 14, 14<SP>1</SP> and 16, 16<SP>1</SP> of the half-moulds 2, 2<SP>1</SP> so that the jaws are moved downwardly by engagement between said angular parts.
Patent GB-612734-A (GB)
Title: Load hook connection
IPC: B66C1/34
Filed: 1946-04-24
Abstract: 612,734. Hooks. TRIGGS, W. W. (Yale & Towne.Manufacturing Co.). April 24, 1946, No. 12403. [Class 89 (ii)] Relates to hoists of the type described in U.S.A. Specifications 2,335,571 and 2,342,091, in which a sprocket-actuated lifting chain is employed and consists in so connecting the chain to the hook that kinking at this point is prevented. To this end, the cross-bar 15 of the yoke in which the hook block 19 is trunnioned at 21 is either integral with the yoke or so formed at 22 that pivoting of the bar in the yoke is prevented. As illustrated, the parts 22 are square in crosssection. The chain is pivoted to the crossbar at 14 about an axis at right-angles to that of the trunnions, the distance between the axes being at least two or three times that between consecutive pivots of the chain.
Patent GB-779994-A (GB)
Title: Quaternary ammonium anion-exchange resins
IPC: C08F8/44
Filed: 1955-04-29
Abstract: Anion exchange resins comprise a cross-linked polymer matrix containing aromatic nuclei, whose ring carbon atoms constitute a major proportion of the total number of carbon atoms in the matrix, to which are attached groups of the form <FORM:0779994/IV(a)/1> in which Y represents an anion, A the radical <FORM:0779994/IV(a)/2> or an alkylene radical of 2 to 6 carbon atoms, and R, R1 and R2 methyl, ethyl or b -hydroxyethyl radica.  They may be prepared by reacting amines of the form <FORM:0779994/IV(a)/3> e.g. 2-dimethylamino-ethyltrimethylammonium iodide, with a chloromethylated copolymer of 98 to 99.5 per cent of a monovinyl aromatic hydrocarbon, e.g. styrene, vinyl toluene, vinyl naphthalene, vinyl anthracene or ethyl styrene, and 0.5 to 2 per cent of a polyvinylidene compound, e.g. divinyl benzene, divinyl xylenes, divinyl toluenes, divinyl ethyl benzenes, divinyl naphthalenes, trivinyl benzene, divinyl ether, divinyl "Cellosolve" (Registered Trade Mark), ethylene glycol diacrylate, ethylene glycol dimethacrylate or diallyl maleate. Alternatively, the chloromethylated polymer may be reacted with amines of the form <FORM:0779994/IV(a)/4> where R5 and R6 are methyl or ethyl radicals, e.g. N,N1-tetramethylethylenediamine, and the product quaternized, e.g. by reacting with methyl chloride, methyl iodide, methyl sulphate, ethyl sulphate, ethylene oxide, butyl chloride or butyl sulphate in the presence of sodium iodide and lime, limestone, zinc oxide or sodium hydroxide.  The copolymers may be prepared by aqueous emulsion or suspension, e.g. in the presence of magnesium silicate, polymerization in the presence of catalyst, e.g. benzoyl peroxide, and chloromethylated by reacting with paraformaldehyde and hydrochloric acid or chloromethyl methyl ether in the presence of aluminium chloride and preferably petroleum ether.  The animation is preferably conducted by refluxing the amine with the chloromethylated polymer in suspension in water, toluene or ethylene dichloride. Specifications 654,706 and 779,995 are referred to.
Patent GB-343390-A (GB)
IPC: C01B25/12
Filed: 1930-04-22
Abstract: 343,390. Chemical furnaces ; hotblast stoves. VICTOR CHEMICAL WORKS, 343, South Dearborn Street, Chicago, U.S.A.-(Noyes, H. F., Weigel, R., and Easterwood, H. W. ; 1412, Shilling Avenue, Chicago Heights, U.S.A.) April 22, 1930, No. 12465. Convention date, April 29, 1929. [Class 51 (ii).] Phosphorus-containing gases are burnt in a combustion chamber 11 connected to a number of heat absorbers 14 similar in construction and operation to the air heating stoves employed with blast furnaces, and disposed so as to provide substantially equal paths 13 for the phosphorus pentoxide-containing gases from the combustion chamber. Phosphate rock is supplied to a blast furnace 5 from which the phosphorus-containing gases pass through a dust separator 7 and cleaner 8 to burners 10 in the wall of the combustion chamber 11, which is sufficiently long to enable complete combustion to take place. The combustion gases pass through ports 12 and conduits 13 to the heat absorbers 14 through reversing valves 15 and leave through mains 14a. Air from one of the mains 16 enters the heat absorbers through valves 17, and the heated air passes out through pipes 18 controlled by valves 19 to a hot blast main 20 connected by pipes 21, 22 to the tuyeres of the blast furnace 5.
Patent GB-909915-A (GB)
Title: Improvements relating to the electrostatic coating of articles
Inventor: DULGIN DOUGLAS
IPC: B05B5/08
Filed: 1958-04-19
Abstract: 909,915. Electrostatic precipitation. DUNLOP RUBBER CO. Ltd. March 18, 1959 [April 19, 1958], No. 12473/58. Class 39 (1). In electrostatic coating apparatus the earthed conducting supports 1 for the articles 4 to be coated are shrouded in insulating material 5 except at the points of contact with the articles. A conducting jacket may be mounted over the insulating material or, in another arrangement, Fig. 3, the supports may be sheathed by a separate jacket of conducting material 10 which is mounted on the support by blocks of insulating material 13. In both cases the conducting jacket is held at the potential of the discharge electrodes in order to repel the charged particles. The insulating material may be polythene.