baber/WOPTO huggingface dataset:
Patent GB-874746-A (GB)
Title: Improvements in or relating to angular accelerometers and aircraft control systems embodying them
IPC: G05D1/06
Filed: 1958-04-03
Abstract: 874,746. Automatic steering control systems. GENERAL ELECTRIC CO. April 3, 1958 [April 5, 1957], No. 10804/58. Class 38 (4). [Also in Group XXXVIII] A control system for stabilizing an aircraft against undesired oscillations when in flight comprises an overdamped accelerometer which responds to velocity for high rates of movement and acceleration for low rates of movement. Controlled movements of the craft for changing direction are usually of constant low velocity so that the accelerometer gives zero output under these conditions and does not upset the manoeuvrability. Undesired oscillations due to wind gusts &c. are of higher frequency and produce a velocity signal from the accelerometer which can be fed to a servo actuator to adjust the elevator or rudder to correct for the disturbing movement. The servo actuator can control the appropriate surface directly or can modify the transmission from the pilot's control or the autopilot (Figs. 1 and 2, not shown). A suitable accelerometer (Fig. 3) consists of a dumb-bell shaped inertia element 40 fastened at its centre of gravity to a shaft 50 which is restrained by a hair-spring 72, the element being surrounded by a damping fluid 56 which also gives a buoyancy effect to reduce the load on the bearings. Angular rotation of the shaft is sensed by a variable transformer comprising a rotor 60 moving between an energized coil 66 and a pick-up coil 70. There may be enough centring torque in the transformer to make the hair-spring 72 unnecessary. The frequency at which the signals change over from acceleration to velocity can be controlled by varying the temperature (and hence the viscosity) of the damping fluid or the tension of the hair-spring. This can be done during flight.
Patent GB-108078-A (GB)
Abstract: 108,078. Murphy, J. Oct. 16, 1916. Mantle supports.-An upright mantle rod a is provided with projections c made integral therewith and arranged in the same transverse plane so as to rest on the top of burner head socket. The upper face of the projections is inclined while the lower face is at right-angles to the rod.
Patent GB-382212-A (GB)
Title: Improvements relating to open-air spray-cooled apparatus
IPC: F28F19/00
Filed: 1932-04-15
Abstract: 382,212. Preventing incrustation. STILL, C., Recklinghausen, Westphalia, Germany. April 15, 1932, No. 10862. [Class 123 (i).] A small quantity of water or liquor containing phenol is added to water sprayed on to openair cooling devices, such as cooling pipes for wash oil from benzol stills and cooling towers, to remove and prevent the growth of vegetable organisms on the sprayed surfaces. The waste water used in cooling and washing distillation gases in apparatus for the dry distillation of coal, which is stated to contain about 1-3 grams of phenol per litre, may be added in small quantities to the spraying water.
Patent GB-552257-A (GB)
Title: Improvements in or relating to the manufacture and production of laminated sheet materials
IPC: B32B27/00
Filed: 1941-08-26
Abstract: 552,257. Compound sheet materials. BRITISH CELLOPHANE, Ltd., HEAVEN, G. S., and OSWIN, C. R. Aug. 26, 1941, No. 10893. [Class 140] In adhering water-sensitive fibrous sheets to water-sensitive non-fibrous sheets by an aqueous adhesive the water-absorption of the non-fibrous sheet during the process is kept below that which would bring the water content above the critical range and cause a permanent shrinkage. The fibrous sheets may be paper, cardboard, pasteboard, pulp-board, wood veneer, fabrics of cotton, linen or viscose rayon, parchment, vellum and leather. The non-fibrous sheets may be regenerated cellulose, lowly substituted cellulose ethers, esters and ether-esters, gelatine and alginic materials. The fibrous sheet is coated with the adhesive in an amount of which the water content is insufficient to raise the moisturecontent of the non-fibrous sheet above the critical range when the latter in any condition is brought into contact with the fibrous sheet. Alternatively, the non-fibrous sheet is coated with the adhesive and applied to the dry fibrous sheet so rapidly that the water in the adhesive is absorbed by the fibrous sheet and prevents the water-content of the non-fibrous sheet from exceeding the critical range. When the amount of adhesive applied to the non-fibrous sheet is sufficient to raise its moisture content above the critical range, the time that elapses before contact with the fibrous sheet should be less than the time of imbibition. Non-fibrous sheets may be applied to both sides of the fibrous sheet. The adhesive may be applied to both the fibrous and non-fibrous sheets. The non-fibrous sheets may be sized, dyed, printed or decorated. The process may be carriedout discontinuously with sheets or continuously with webs. Suitable adhesives comprise gelatine and calcium or zinc chlorides, gelatine and acetic acid or pyridine, water-soluble cellulose derivatives, starch, dextrin or gum arabic. Urea, glycerin or glucose may be added. The laminated product may be coated with a moisture proof coating for example as described in Specification 283,109, [Class 140]. It may be used for making bags, envelopes, seamed sheaths and tubes. Specifications 386,775, [Class IV], and 548,531 also are referred to.
Patent GB-313689-A (GB)
Title: Improvements in or relating to the measurement of electrical energy in triphase circuits
IPC: G01R11/48
Filed: 1928-04-13
Abstract: 313,689. Lupi, D. April 13, 1928. Power meters; special quantities, registering.- Active power, reactive power, and an approximate value of apparent power in three phase circuits, together with a method constant, are obtained by connecting up four standard single-phase wattmeters and providing outside terminal connections at intermediate points of the voltage circuits, so as to produce voltage couples with supplementary angles between them, the tension vectors of each couple being at right angles. The connections may be made to impedances connected across the secondaries of voltage transformres or they may be made to the transformer secondaries. As shown, the four wattmeters A - - D are provided with tappings 1, 2<1>, 3<11>, 3 and 2, 1<1>, 1<11>, 3 which divide the voltage across each of two phases into parts equal to one half and (# 3 - 1). The currents and voltages applied to meters A, B together give readings of active power, to meters C, D, the reactive power and the sum of the diagonal readings, an approximation of the apparent power. The ratio of the sum of one diagonal reading to that of the other, i.e. A + D to B + C, provides a method constant for the apparatus. The phase connections are periodically changed cyclically by a switch S.
Patent GB-1400988-A (GB)
Title: Process of preparing a curable composition useful for forming a heat and solder-resistant coating on a printed circuit board
IPC: C08G75/04
Filed: 1974-03-12
Abstract: 1400988 Photo-curable compositions W R GRACE & CO 12 March 1974 [13 March 1973] 11007/74 Addition to 1354429 Heading C3R [Also in Division H1] In a process for preparing a screen-printable photo-curable composition from a liquid starting mixture comprising (1) a polyene of formulae (2) a polythiol in a proportion of up to 20% of that required to react stoichoimetrically with said polyene, and (3) 3 to 20 weight per cent of silicone oil, based on the total weight of polyene and polythiol including the polythiol subsequently added, the starting mixture is exposed to curing actinic radiation for a period sufficient to react substantially all of the polythiol present with a portion of the polyene and thereafter, in the substantial absence of curing actinic radiation, further polythiol is added to the irradiated mixture in a proportion required for reaction with at least 50% of the polyene, based on the total initial unreacted content of polyene, and to impart to the mixture a viscosity, measured at 25 C., in the range 5000- 200,000 centipoises. Ultraviolet light having a wavelength of 2000 to 4000 ngstrom units may be used as the actinic radiation to prepare the composition and to photo-cure it. The polythiol may be pentaerythritol tetrakis (betamercaptopropionate). The composition also may contain 0À05 to 10% by weight of a photo-curing rate accelerator. Examples are given. Uses.-A heat- and solder-resistant coating for use as an insulating layer in the manufacture of printed circuits.
Patent GB-574838-A (GB)
Title: Harmonic-frequency generator
IPC: H03B19/10
Filed: 1942-08-06
Abstract: 574,838. Valve generating circuits. HAZELTINE CORPORATION. Aug. 6, 1942, No. 11024. Convention date, Sept. 20, 1941. [Class 40 (v)] Pulses of narrow form and rich in harmonics are derived by peak rectification of waves of a secondary frequency produced by waves of a lower primary frequency, the pulses being at the primary frequency. In Fig. 1, primary oscillations from a source 10 are applied to a blocking oscillator 12 to give a saw-tooth output which is fed to the control grid of a valve 16 having in its anode circuit an inductance 17 tuned to a higher secondary frequency. The output from 16 thus consists of trains of damped oscillations of the secondary frequency succeeding each other at the primary frequency. Thus, after passage through diode 19, which passes only the positive peaks, the wave consists of positive pulses at the primary frequency and of duration less than half the period of the secondary oscillation. After amplification at 22 and passage through bandpass filters 28, 29, the output is passed to series resonant circuits 24 ... 27 'tuned to the desired harmonics, which may be selected by a switch 36 serving to connect an appropriate condenser 32 ... 35 to tune an inductance 37 to give the desired harmonic across output terminals 31. In the modification shown in Fig. 4, oscillator 41 has tuned grid and anode circuits so as to generate oscillations of a primary frequency determined by crystal 43. The output is fed through condenser 46 to valve 16 having a grid leak 46' which with condenser 46 has a time constant such as to give an anode current in the form of pulses at the primary frequency. These, by shock excitation of tuned inductance 17, give damped trains of waves at a higher secondary frequency which are fed to a peak rectifier 47 to give short pulses from which the harmonics are selected as in Fig. 1. In the arrangement shown in Fig. 6, the screen grid of valve 50 acting as an oscillator anode is tuned by circuit 54 to the primary frequency controlled by crystal 51. The plate anode is tuned by circuit 55 to a higher secondary frequency, such as the fourth harmonic, and these two frequencies are combined in the anode circuit to give a peaked wave form from which pulses are obtained by a peak rectifier 57. The harmonics are selected by means of a switch 60 which connects an appropriate condenser 61 ... 64 to tune an inductance 59 to the desired harmonic.
Patent GB-1360946-A (GB)
Title: Process of separating optical geometric structural isomers and the compounds used therefor
IPC: C07F9/6574
Filed: 1972-03-09
Abstract: 1360946 Binaphthyl phosphate resolving agents RICHARDSON-MERRELL SpA 9 March 1972 [18 March 1971] 11041/72 Headings C2C and C2P The invention comprises optical isomers of formula  (wherein R and R 1  are each H, F, Cl, Br, NO 2  or C 1-8  alkyl, with the proviso that the two 1,2- naphthylene radicals are both unsubstituted or are identically substituted) and the corresponding bi(5,6,7,8-tetrahydronaphthyl) compounds; and their preparation by conventional resolution of the racemates thereof using basic optically active resolving agents such as cinchonine, cinchonidine, brucine, quinine, quinidine, morphine, strychnine, ephedrine or α-phenylethylamine. Optical resolution of racemic organic amines is effected by conventional procedures using the inventive compounds as resolving agents. Many organic amines are specified. Clomiphene is separated into the cis- and transisomers thereof using the inventive compounds or racemates thereof as resolving agents. Racemates of the inventive compounds are prepared from the corresponding 1,1<SP>1</SP>-binaphthalene-2,2<SP>1</SP>-diols by reaction with POCl 3 /py, and hydrolysis of the resulting pyridine salts with HCl. Methyl esters of the resulting racemic binaphthylphosphoric acids may be prepared by reaction with diazomethane. In Example 10 5,5<SP>1</SP>,6,6<SP>1</SP>,7,7<SP>1</SP>,8,8<SP>1</SP> - octahydro - 1,11 - binaphthalene - 2,2<SP>1</SP>- diyl phosphorochloridate is also prepared. 3,31 - Dimethyl - 1,1<SP>1</SP> - binaphthalene - 2,2<SP>1</SP>- diol is prepared from 3-methyl-2-naphthol by reaction with FeCl 3  (Ex. 3). 6,6<SP>1</SP>- Dibromo - 1,1<SP>1</SP> - binaphthalene - 2,2<SP>1</SP>- diol and the corresponding 6,6<SP>1</SP>-difluoro and 6,6<SP>1</SP>- dichloro compounds are prepared from the 6,6<SP>1</SP>- unsubstituted compound by reaction with elementary halogen (Ex. 5). 6,6<SP>1</SP> - Dinitro - 1,1<SP>1</SP> - binaphthalene - 2,2<SP>1</SP>-diol is prepared from the corresponding 6,6<SP>1</SP>-unsubstituted compound by reaction with HNO 3 /HOAc (Ex. 7). 5,5<SP>1</SP>,6,6<SP>1</SP>,7,7<SP>1</SP>,8,8<SP>1</SP> - Octahydro - 1,1<SP>1</SP>- binaphthalene-2,21-diol is prepared by catalytic hydrogenation of the corresponding fully unsaturated compound (Ex. 9).
Patent GB-391308-A (GB)
Title: Improvements in and relating to the refining of liquid hydrocarbons by means of liquid sulphur dioxide
IPC: C10G21/10
Filed: 1932-04-18
Abstract: Water is removed from sulphur dioxide which has been used to refine hydrocarbons by passing the vapours from the condenser-pressure-evaporator of the extract, which vapours contain practically all the moisture, through a drying apparatus or a rectification column, or by separately condensing all or part of these vapours and redistilling.  For example, in the illustrated evaporation portion of an Edeleanu apparatus, the extract passes from a pipe 1 through evaporators 2, 3, 4, working respectively at 4-6 atmospheres, atmospheric, and reduced pressure, and the raffinate from a pipe 6 through corresponding evaporators 7, 8, 9; the vapours from the evaporator leave by a pipe 21 and pass through a drying tower 22 against trickling sulphuric acid, thence flowing by pipes 25, 27, 28 to a common condenser C.  The tower 22 may be replaced by a rectification column, or, as shown in Fig. 3, the vapours <PICT:0391308/III/1> <PICT:0391308/III/2> from evaporators 3, 4, 9, 8, 7, pass to a condenser 37, while those from evaporator 2 pass to a condenser 42; this condensate leaves by a pipe 43, the whole or a part being passed through a valve 47 and a pipe 46 to a still 48, the remainder being passed direct through a valve 45 and pipe 44 to the tank 39 which receives the condensate from condenser 37; the still vapours pass from the pipe 51 direct to the pipe 36 and still 37 if the still is working at the condenser pressure of 4-6 atmospheres, or via the pipe 18 and compressor 19, and pipe 20 if the still is at atmospheric pressure.
Patent GB-780450-A (GB)
Title: Improvements in or relating to echo-sounding indicating apparatus
IPC: G01S1/72
Filed: 1955-04-18
Abstract: 780,450. Echo-sounding. RAYTHEON MANUFACTURING CO. April 18,1955 [April 19, 1954], No. 11146/55. Class 118 (2). An indicating apparatus for echosounding of the type wherein a rotating member carries a contact for triggering a pulse and a discharge lamp for indicating echoes, is simplified by using a stationary electrically-conductive spindle on which a non-conducting rotatable member, carrying said lamp and contact, is motmted. An insulating disc 27 is rotatable on spindle 28 secured to a bracket 14 within a casing 12 which has a glass window 75. A metallic hub 30 forms a slip-ring for connecting a gas discharge lamp 38 to terminal 68 via brush 69 and is insulated from the spindle 28 by sleeve 32. A keying contact 44 carried on disc 27 has connected thereto a springy blade 60 the end of which bears on the end of stationary spindle 28 to earth the contact 44 and also act as return lead for lamp 38. A synchronous motor 18 drives the disc 27 by means of a pinion 25 engaging teeth on the periphery of the disc. The back of glass plate 75 is rendered opaque by black paint 78 apart from an annular portion 77, through which the lamp 38 may be observed. A scale is provided on the plate 75 adjacent the transparent portion 77. Received echo signals are amplified and converted into unidirectional signals by a detector circuit (Fig. 4, not shown) before being fed to terminal 68 and thence via brush 69 and slipring 30 to lamp 38. Lamp 38 is thus fed with a D.C. signal to provide a brighter flash-it being so oriented that the electrode which glows is nearer the dial 75. By adjustment of keying block 55 the fixed keying contact 53 is positioned such that the rotating contact 44 causes a pulse to be transmitted at the instant the lamp 38 is opposite the zero point on dial 75. A change of range may be provided by changing the pinion 25 and replacing the dial 75, or providing the latter with a plurality of scales. Specifications 713,366 and 749,933 are referred to.
Patent GB-821733-A (GB)
Title: Isolation process
Inventor: CALAM CHRISTOPHER TOWERS
IPC: C12P27/00
Filed: 1957-04-05
Abstract: Gibberellic acid is isolated from an aqueous fermentation medium thereof in a process which comprises extracting the said aqueous fermentation medium with a water-immiscible or partially water-miscible organic solvent selected from the group consisting of esters, ketones, alcohols and ethers.  Specified solvents are ethyl acetate, n-butyl acetate, isoamyl acetate, diethyl carbonate, ethyl propionate, ethyl n-butyrate, n-butyl lactate, isopropyl acetate, b -ethoxyethyl acetate, methoxybutyl acetate, methyl n-propyl ketone, cyclohexanone, diethylketone, methyl isobutyl ketone, methyl cyclohexanone, methyl ethyl ketone, benzyl alcohol, sec.-butanol, cyclohexanol, n-butanol, diethyl ether and 1:1-dimethoxyethane. Mixtures of solvents, e.g. n-butanol and n-butylacetate or isoamyl acetate and n-amyl acetate may also be employed.  Prior to extraction the aqueous fermentation medium is preferably adjusted to a pH of 1.5-4.0.  A suitable starting material is an aqueous filtrate obtained from a fermentation medium made by growing the fungus Gibberella fujikuroi.  The organic solvent extract so obtained may be extracted with a buffer solution of pH 6-8 and the buffer extract acidified to a pH of 3-4, the gibberellic acid is then extracted with ethyl acetate. Examples describe the extraction of gibberillic acid from aqueous fermentation media employing the solvents listed above.
Patent GB-179411-A (GB)
Title: Improvements in and relating to golf stick handles
IPC: A63B59/00
Filed: 1921-04-18
Abstract: 179,411. Yerger, W. C. April 18, 1921. Handles. - Relates to adjustable golf-stick handles, and consists in forming the stick with notches 18, Fig. 1, adapted to be engaged by a locking spring 20 secured within a recess in the handle. The handle may be locked in any position on the stick by a screw 22. The handle is shaped so as to afford a comfortable grip for the hand of the player. In a modification, the handle is shaped as shown in Fig. 2.
Patent GB-124134-A (GB)
Title: Window Opening, Closing and Locking Apparatus.
Inventor: MOYSE SIMON
IPC: E05F11/04
Filed: 1918-07-09
Abstract: 124,134. Moyse, S. July 9, 1918 Fastenings for hinged doors and windows.-In window opening, closing, and bolting apparatus for hinged windows, fanlights, &c., spring bolts 17 are carried on a triangle or cross-bar 11 resiliently attached to the window 10 by spring mountings 12 and having cords 13, 14 attached to its ends and to each other as shown. The cords 14 pass over pulleys 15 mounted on the window frame behind and a little above the cross-bar. Fig. 6 shows the apparatus adapted to a window hinged at the top. The cord 20 is attached to the rod 11 and passes over a pulley 21. The cord 22 is attached to a connecting rod 23, one end of which slides in guides 25, while the other is attached to the rod 11.
Patent GB-1005789-A (GB)
Title: Improvements in or relating to methods of producing monocrystals
IPC: C30B25/02
Filed: 1962-03-23
Abstract: Single crystals of either elements or compounds are prepared by subjecting the element or compound or mixture of elements to a heat treatment in the presence of a transport gas, whereby at a first place in a reaction space with a temperature gradient one of the starting materials reacts with the transport gas to form a gaseous compound and at a second place a monocrystal is deposited and the transport gas released, the vessel in which the reaction is performed being displaced relative to the temperature gradient so that as the crystal grows the temperature conditions at the point of deposition are maintained substantially constant. Single crystals of silicon or the following binary compounds: phosphides, arsenides, antimonides and nitrides, e.g. GaP, AlP, AlAs and cadmium arsenide; sulphides, selenides, tellurides, e.g. zinc sulphide and cadmium sulphide; AIIIBV compounds where AIII is an element of the third main group (B, Al, Ga, In) and Bv is an element of the fifth main group (N, P, As, Sb) may be prepared.  Binary peritectic compounds and binary compounds which undergo a phase change at a conversion temperature, e.g. Cd3As2 may also be obtained.  The transport gas may be a halogen or halide.  During deposition an impurity may be incorporated into the monocrystal by adding the impurity, e.g. chlorine, arsenic, sulphur, zinc or gallium to the vessel.  In an Example:  (1) a GaP crystal is grown from GaP powder using iodine as transport gas, and in a modification a GaP crystal containing thallium impurity is made from GaP produced by heating thallium alloyed gallium and hydrogen phosphide.
Patent GB-768619-A (GB)
Title: Improvements in printing presses
Inventor: STENSTROM STEN RICHARD
IPC: B41F3/58
Filed: 1955-04-19
Abstract: 768,619. Printing-machines. GRAFISKA MASKIN AKTIEBOLAGET. April 19, 1955, No. 11272/55. Class 100(2) Bed reciprocating apparatus:-A printing press, more particularly a two revolution press, has a reciprocating type bed 29 driven during printing and return periods by racks 31 secured to the bed and alternately in mesh with driving pinions 25 and during retardation and acceleration periods by forks 32 on the bed which co-operate with rollers 37 on swinging arms 12, the fork grooves being straight at their inner ends and widening towards their outer ends, while the outer parts of each leg of a fork has a different centre and radius of curvature. A driving shaft 34 carries a flywheel 34a and a gear wheel 35 which drives two pinions 8. The pinions 8 drive pinions 25, Fig. 5, movable axially on their shafts, such that they alternately engage one of the racks 31, by levers 20, 21 rocked by a cam 17 on a shaft 16. The arms 12 are actuated by levers 10 pivoted to the pinions 8. The dimensioning and shape of the fork groove permits the roller 37 to engage therein and move upwards and backwards therein to compensate for their different speeds upon engagement. The groove of the fork 32, Fig 3, has curves representing the in-going and out-going motions spaced apart by a distance a (R representing the roller radius) and straight portions in which the roller lies without play during the turning movement of the bed.