baber/WOPTO huggingface dataset:
Patent GB-1259803-A (GB)
Title: Methods of making semiconductor devices and devices so made
Inventor: MURPHY BERNARD THOMAS
IPC: H01L21/761
Filed: 1969-01-29
Abstract: 1,259,803. Semi-conductor devices; resistors. WESTERN ELECTRIC CO. Inc. 29 Jan., 1969 [5 Feb., 1968], No. 4861/69. Headings H1K and H1S. During semi-conductor device manufacture at least one N(P) type zone 42, 43 is diffused into the surface of a P(N) type substrate 41 and a P(N) type epitaxial layer is deposited thereon. N-type contact zones 46, 48 are then diffused through the epitaxial layer to meet the now buried N-type zones 42, 43 around their entire peripheries, and a P-type dopant is diffused non-selectively into the entire surface of the epitaxial layer, the P-type doping level being selected so as not to convert the surface of the N-type contact zones 46, 48 to P-type conductivity. Further selective N-type diffusion into the zones 46, 48 may be employed to offset the compensation produced therein by the non- selective P-type diffusion. In the P-type islands surrounded by the buried zones 42, 43 and the contact zones 46, 48 devices such as bipolar or field effect transistors, diodes, resistors or capacitors may be formed, using selective  diffusion where necessary. With silicon as the semi-conductor material suitable dopants mentioned are boron, arsenic, antimony or phosphorus.
Patent GB-860430-A (GB)
Title: Improvements in and relating to earth leakage protection systems for electrical circu
Inventor: CROWTHER FRED
IPC: H02H11/00
Filed: 1956-02-16
Abstract: 860,430. Protective cut-out arrangements. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. May 8, 1957 [Feb. 16, 1956], No. 4879/56. Class 38 (5). An earth-leakage protective system for preventing the closure or reclosure of a circuitbreaker during the existence of an earth fault includes a relay controlling the circuit-breaker, the relay having an operating winding, a permanent magnet to retain the relay in an operated condition and a winding for overcoming the permanent magnet under the control of a local circuit including a source of current connected between earth and a conductor on the outgoing side of the circuit-breaker. The system may be generally in accordance with any of the arrangements of Specification 675,514. In the arrangement shown, the operation of a pushbutton switch 7 causes the energization of the operating winding RA of the relay from a transformer 8 and rectifier 9. The relay closes its contacts R1 in a contactor coil circuit and is held closed by the permanent magnet (not shown). The operation of a " start " switch 5 causes the energization of the contactor closing coil C to close main contacts C1 . . . C3 and holding contacts C4, and the opening of contacts 11 in the local circuit. In the event of an earth fault, a winding RB of the relay is energized from a core-balance transformer 14 and overcomes the permanent magnet to open the contacts R1 so that the contactor is opened. The local circuit is now completed by the closure of the contacts 11 and by the fault path so that current may flow from the source 8 and the rectifier 9 through star-connected rectifiers 10, the phase conductors 1, motor 2, the fault path, earth and the winding RB to prevent the operation of the relay and the reclosure of the contactor. If an earth fault should occur when the contactor is open, current flowing in the local circuit will prevent the closing of the contactor as described above. The switch 7 may be provided with normally-closed contacts in series with the coil C so that the contactor cannot be closed when the winding RA is energized.
Patent GB-690703-A (GB)
Title: Improvements in colour filters and the method of producing the same
Inventor: COOPER HUBERT DENNIS
IPC: G03C1/83
Filed: 1950-02-27
Abstract: A blue-green colour filter is produced by immersing a hardened gelatine layer in an aqueous solution of a mixture of Patent Blue A and Tartrazine.  100 c.c. of the solution contains from 1.0 to 1.5 grams of Patent Blue, preferably 1.25 grams, and from 0.3 to 0.5 gram of Tartrazine, preferably 0.45 gram.  The temperature of the solution during the immersion lies between 56 DEG  and 68 DEG  F., being preferably 62 DEG  F., and the period of immersion is between twelve and twenty-four seconds, preferably seventeen seconds. After immersion the gelatine layer is washed for a period of the order of two-and-a-quarter minutes in water at between 56 DEG  and 68 DEG  F. preferably at 62 DEG  F.  The filter is then dried.  Specifications 656,909, [Group XX], 690,702, 690,704, 690,705 and 690,714, [Group XX], are referred to.
Patent GB-882308-A (GB)
Title: Improvements in dye-sensitized photographic emulsions
IPC: G03C1/28
Filed: 1958-02-17
Abstract: 882,308. Supersensitized photographic emulsions. KODAK Ltd. Feb. 17, 1958 [Feb. 18, 1957], No. 5018/58. Drawings to Specification. Class 98(2). Photographic silver halide emulsions are supersensitized with a water-soluble salt of melonic acid (hydromelonic acid) and a mesosubstituted carbocyanine dye of the general formula:- wherein R and R 1  are alkyl or substituted alkyl groups, R 2  is an aryl, 2-indolyl, thienyl, or amino group, any of which may be substituted, or a substituted 3-pyrryl group, an unsubstituted 2-pyrryl group or a group having one of the formulae (wherein R 3  and R 4  are hydrogen or alkyl, cycloalkyl or aryl groups and R 5  is an aryl group), X is an anion, and Z and Z, complete 5- or 6-membered heterocyclic rings. Z and Z, may complete nuclei of the benzthiazole, naphthathiazole, benzoxazole, naphthoxazole, benzselenazo, naphthaselenazole or 2-quinoline series. In the examples the Group R 2  is phenyl, 2-thienyl, anilino, acetanilido, N- methylanilino, diphenylamino, N-piperidyl, 2- pyrryl, 1-ethyl-2,5-dimethyl-3-pyrryl, 3-indolyl, 2-methyl-3-indolyl, 1,3-dimethyl-2-indolyl and 2-phenyl-1-pyrrocolyl. Specifications 394,692, 466,246, 533;425, 546,705, 581,772, 599,712, 649,725, 719,238, 726,149, 756,226 and 760,991 are referred to.
Patent GB-175192-A (GB)
Title: Improvements in hydraulic turbine installations
IPC: F03B11/00
Filed: 1921-02-15
Abstract: 175,192. Lind, G. H. Feb. 15, 1921. Working-fluid supply. - In tidal turbines operated by the alternate flow of water through inlets 3, 2 corresponding to high and low water conditions respectively, the exhaust water is directed in an efficient manner to the proper suction conduit 6 or 7 by means of a valve member 4. The valve 4 has a pivot 5 at the bottom and a flange 8 at the top resting in a recess 9 provided with roller thrust bearings, and it is rotated either by a pinion 10 engaging teeth on the flange 8, or by an axle extending below the conduits 6, 7.
Patent GB-768087-A (GB)
Title: Improvements relating to movement indicating and control devices for shafts
Inventor: WHITEHOUSE REGINALD GEORGE
IPC: G05G15/08
Filed: 1954-02-23
Abstract: 768,087. Testing bearings. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 21, 1955 [Feb. 23, 1954], No. 5325/54. Class 12 (1). [Also in Group XIX] A device for indicating axial movement of a shaft 13, and for removing the load therefrom when the movement exceeds a predetermined amount, comprises a member 1, pivoted at 2, whose lower end carries a nozzle 4 which makes running contact with a collar 12 on the shaft 13 and whose upper end is pivotally connected to an indicator 10 and a valve 11 operating the load disconnecting means. Oil is fed through a port 3 and the member 1 to the nozzle 4 to prevent wear thereof. Weights 7, contained in an oil dash-pot 8, cause, through a pivoted lever 6 and link 5, the nozzle 4 to bear against the collar 12. The lever 6 is also in contact with the movable rod 9 of the indicator 10.
Patent GB-770295-A (GB)
Title: Improvements in or relating to pressers for clothes and the like
IPC: A47G25/72
Filed: 1955-02-25
Abstract: 770,295. Suitcases. BENHAM, W. E. Feb. 25, 1955 [Feb. 25, 1954], No. 5574/54. Class 18. [Also in Group VIII] An electrically heated presser is mounted inside a portable container with means for stretching garments and the like. The two halves of the container are connected by hinges a, and each may be provided with a platform f mounted for vertical movement by means of lugs and slots. The platforms f and the mating faces of the two halves of the container may be arranged at an inclination to the top and bottom of the container. Wedge-shaped drawers (not shown) can be pushed into the container under the movable platforms, into one of three positions to apply light, medium or heavy pressure to the garments on the platforms. Alternatively the platforms may be pressed towards one another by springs c. Each platform f may be provided with a covering layer of absorbent fabric or similar material and with an electric heating element. Removable stretcher bars l and clips for holding trousers are provided. The container may also be provided with ventilation holes having sliding covers, and with small wheels fitted to one corner of the case.
Patent GB-248393-A (GB)
Title: An improved two-part casing for a chain drive running in an oil bath
IPC: F16H57/05
Filed: 1926-02-27
Abstract: 248,393. B³hler, H. Feb. 27, 1926. Lubricant conveyed by mechanical means.- Part of the oil splashed on to the walls of a twopart casing forming an oil bath for a chain drive is caught in channels D and conveyed to the inside of the chain.
Patent GB-540910-A (GB)
Title: Improvements in or relating to electric protective devices
IPC: H02H3/28
Filed: 1940-03-28
Abstract: 540,910. Protective cut-out systems. GENERAL ELECTRIC CO., Ltd., BAKER, W. F., and WILSON, W. March 28, 1940, No. 5647. [Class 38 (v)] In a busbar protection system of the kind in which the out-of-balance current from a group of similar and parallelconnected current transformers 12 in the conductors 2 .. 5 connected to the busbars 1, is fed to the operating winding of a biased differential relay and a restraining winding is energized by the arithmetic sum of the conductor currents, thus preventing tripping due to unbalance by current-transformer saturation on heavy through-fault currents, a pair of oppositelyconnected rectifiers 10 are connected to each transformer to provide for the operating coil 7 two parallel paths, one of which includes also the restraining coil 11. The relay may be a beam relay, or an induction-disc relay, the solenoid restraining coil of which acts on a permanent-magnet armature of iron-nickelaluminium alloy, on the end of an arm on the relay-spindle. This coil may be arranged to saturate with heavy currents where the relay controls a larger number of feeders. Interphase fault protection may be obtained by providing each phase with its own relay and connecting the relay contacts in parallel. The Provisional Specification states also that poly phase busbars can be protected against earth faults by means of a single relay associated with transformers in all the conductors connected to the bars, and describes an arrangement in which separate transformer groups supply the two windings, the transformers of the one group each including a rectifier. Specification 540,172 is referred to.
Patent GB-1024865-A (GB)
Title: Lining of converters
IPC: C21C5/44
Filed: 1963-02-12
Abstract: 1,024,865. Converter linings. OSTERREICHISCH-AMERIKANISCHE MAGNESIT A.G. Feb. 12, 1963 [Feb. 14, 1962], No. 5687/63. Heading F4B. A converter lining comprises magnesia bricks which have been burned whilst free from cokable binding agents and subsequently impregnated with a carbonaceous liquid cokable during operation of the converter. The liquid may be commercial steelworks tar containing at least 60% pitch. The bricks are impregnated when hot, preferably in a vacuum, and then cooled before use. Repeated impregnation with burning under reducing conditions between successive impregnations may be performed, the substance used for the last impregnation being coked during operation of the converter.
Patent GB-357064-A (GB)
Title: Process and apparatus for the pasteurisation of milk
IPC: A23C3/03
Filed: 1931-02-24
Abstract: 357,064. Pasteurizing milk. AKTIEBOLAGET SEPARATOR, 8, Fleminggatan, Stockholm. Feb. 24, 1931, No. 5783. Convention date, March 1, 1930. [Class 49.] In pasteurizing milk in a chamber 1 by means of steam supplied to a jacket 2, the steam is kept only a few degrees above the pasteurizing temperature, e.g. at about 80‹ C., by reducing its pressure. The milk is supplied to the chamber 1 through an inlet 11, and leaves by an outlet 22. The chamber 1 has a stirrer 7 carried by a shaft 8 driven by a pulley 9. The steam is supplied through an inlet 3 to the jacket 2 which has an outlet 4 connected to a vacuum pump 13, actuated by shaft 8, which maintains reduced pressure in the chamber 2. An automatic valve 21 admits air if the pressure in chamber 2 falls below a predetermined level. Drip rings 24 are provided in the chamber 2 and the condensed water is removed by pump 13. The apparatus may be used for treating sourish milk which causes deposition of casein on the walls of the pasteurizer, the reduction in conductivity of the heating surface being compensated for by a temporary increase of the temperature of the steam.
Patent GB-525473-A (GB)
Title: Improvements in or relating to the manufacture of ether alcohols
IPC: C07C43/02
Filed: 1939-02-21
Abstract: 525,473. Ether alcohols. BOHME FETTCHEMIE GES. Feb. 21, 1939, No. 5800. Convention date, Feb. 23, 1938. [Classes 2 (ii) and 2 (iii)] Ether alcohols containing one or more, preferably from one to six, alcohol and ether groups joined to an alkyl radical are prepared by subjecting the corresponding ether acids or ether esters to catalytic hydrogenation. The products may be employed as additions to washing and wetting out agents as well as to assistants for the textile, leather, furriery and paper industries and may be sulphonated to produce water soluble capillary active substances. The ether acids or ether esters are prepared by the action of alkali alcoholates or phenolates on halogen substituted acids or esters or by the action of halogen substituted hydrocarbons on acids or esters containing hydroxy group or groups, the hydrogen atom or atoms of which are substituted by an alkali metal. In examples butoxyacetic acid butyl ester is prepared from n-butanol and chloracetic acid butyl ester in the presence of sodium and hydrogenated in the presence of a copper catalyst containing iron and chromium to give butoxyethyl alcohol. Methyl-isooctylphenoxy-acetic acid ethyl ester is prepared from isooctylcresol and chloracetic acid ethyl ester and reduced to the mono-methyl-isooctyl cyclohexyl ether of ethylene glycol. Cresoxy acetic acid is prepared from cresol and chloracetic acid and reduced to methyl-cyclohexyloxyethyl alcohol. Decylbutoxyacetic acid is prepared from 2-bromo-dodecane acid-1 and sodium butylate and hydrogenated to the monobutyl ether of decylethylene glycol. An ether acid is prepared from 12-bromo-octadecane acid-1 and sodium isopropylate and hydrogenated to isopropyl ether of hexyldodecamethylene glycol. In the same way glycerine-#-dodecyl ether or hexite dodecyl ether are obtained from dodecyloxy-malonic acid diethyl ester or the dodecyl ether of mucic acid dimethyl ester. A cellulose residue substituted glycol, in some cases partly degraded, may be prepared from cellulose glycollic acid.
Patent GB-1487984-A (GB)
Title: Method and apparatus for generating error corrected signals
IPC: G01N27/00
Filed: 1975-02-11
Abstract: 1487984 Counting particles; errors correcting COULTER ELECTRONICS Ltd 11 Feb 1975 [12 Feb 1974] 5803/75 Heading G4D The invention provides a system for correcting coincidence errors in a Coulter type particle counter. The particle pulses after thresholding at 22 and shapings 24 are fed to one input of a comparator 68. Each particle pulse also produces at the output of a pulse stretching circuit 26 a pulse whose length is a function of the particle pulse length. A variable frequency oscillator delivers pulses to a gate 56 which deletes those which coincide with the stretched pulses from 26. The remaining pulses are applied to the other input of the comparator 68; when the two inputs differ a D/A converter 72  delivers a signal which modifies the frequency of oscillator 36. The effect is that counter 40 accumulates a count related to the particle pulses by a non-linear function dependent both on the frequency and width of the particle pulses. In Fig. 3 the comparator 68 comprises an updown counter feeding the D/A converter. The latter may be replaced by a low pass filter (Fig. 4, not shown). In other embodiments the comparator is a R-S bi-stable feeding an integrating amplifier (Fig. 5, not shown) or the two pulse signals are fed to diode pump circuits the outputs of which are compared by a voltage comparator (Figs. 1, 2, not shown). The pulse stretching circuit 26 is adjustable to bring the count as close as possible to the correct value over the working range.
Patent GB-1379921-A (GB)
Title: Mesuring circuits
IPC: G08B17/107
Filed: 1972-02-08
Abstract: 1379921 Self adjusting photo-electric arrangement ENVIRONMENT ONE CORP 8 Feb 1972 [8 Feb 1971] 5856/72 Heading G1A [Also in Division G4] In a photo-electric detector arrangement in which the output from a photo-resistor 12, Fig. 1 is supplied to an inverting feedback simplifier A1 to effect an operation, e.g. operate an alarm, the feedback path has a long time-constant to deal with slow changes in the system, i.e. source changes, dust &c. and includes an opto-electric coupling element 17, 18 in which the current through lamp 18 is controlled by a transistor Q1. The arrangement is supplied to monitoring the atmosphere in a number of different zones by a cloud chamber 13 into which zone samples are successively introduced to detect fire or dangerous gas, and the circuitry includes selectable resistors R 1 -R 4  which can be inserted to compensate for differences in the ambient environment of the different zones, e.g. halls, canteen, kitchen. An additional resistor may be provided to compensate for night and day differences and a cam operated switch 21 is arranged to prevent alarm operation during zone switch over. Alarm solenoid K 1  is normally actuated and is released by a peak signal on C6 exceeding a reference voltage. A malfunction circuit responsive to a reading below a threshold to release a malfunction relay when a cloud formation does not occur in the chamber is described with reference to Fig. 2 (not shown). The condition of the system may be checked by measuring the voltage across a resistor in series with lamp 18, Specification 1379922 is referred to.
Patent GB-975077-A (GB)
Title: Improvements in polystyrene production
IPC: C08K5/00
Filed: 1963-02-13
Abstract: Crystalline isotactic polystyrene is produced by heating amorphous isotactic polystyrene at a temperature below its melting point, e.g. 150-175 DEG C., in the presence of a crystalline nucleating agent dispersed therein so as to cause the polystyrene to crystallise, the nucleating agent being solid at the heat treatment temperature and having a crystal dimension equal to either of the crystal dimensions of crystalline isotactic polystyrene. The nucleating agent, e.g. 0.25-1%, may be dispersed in the polystyrene by masticating it with the molten polymer and may be quinhydrone, 1,6-diphenyl-1, 3, 5-hexatriene, inositol, D-glucuronolactone, SnCl2, SmCl3, KBr, RbCl, CdBr2, graphite, BaSe, Na2O2, AuSb2, VI2, CoI2, YbCl2, SrO2, LaNO3.6H2O or Mg SnF66H2O.
Patent GB-1331877-A (GB)
Title: Tab of the type attaachable to a wall of an easy opening contai ner and a method of making the tab
IPC: B21D51/38
Filed: 1971-06-30
Abstract: 1331877 Portable containers E C FRAZE 30 June 1971 [17 Aug 1970] 5911/73 Divided out of 1331876 Heading B8D The disclosure is identical to that of the Parent Specification, the claims being directed to the tab attachable to a wall of an easy opening container to initiate severance of a segment of the wall, and also to a method of making such a tab.
Patent GB-933614-A (GB)
Title: Improvements relating to overload clutches
IPC: F16D7/04
Filed: 1961-02-17
Abstract: 933,614. Slip couplings. J. WALTERSCHEID, and B. WALTERSCHEID-MULLER. Feb. 17, 1961 [Feb. 17, 1960], No. 6019/61. Class 80 (2). In an overload slip coupling for agricultural or building machinery of the kind wherein sets of four cam-faced plungers 7 carried by a driven shaft 2 are pressed by springs 9 into recesses 6 in a driving drum 1, the plungers 7 and recesses 6 are arranged so that for any relative angular position of the two clutch members 1, 2 relative motion therebetween is opposed by at least one plunger 7 from each set engaging a recess 6. The plungers 7 may, as shown, act radially or axially. The number of plungers 7 and recesses 6 and their relative positions are so selected that the coupling transmits torque up to a predetermined limit without slip and transmits torque at said limit during slip. The predetermined limit may be adjusted by changing the number of plungers or the strength of the springs.
Patent GB-636583-A (GB)
Title: Improved electric connector arrangement for capacitors
IPC: H01G4/38
Filed: 1948-02-27
Abstract: 636,583. Two-part couplings; condensers. STEPHAN, F. C., and WEGO CONDENSER CO., Ltd. Feb. 27, 1948, No. 6032. [Classes 37 and 38 (i)] A terminal 4 for a capacitor 3 in a metal casing 1 comprises a socket 6 embedded in an insulator 7 which has moulded to it a plate 8 by which the terminal is secured in an airtight manner, e.g. by soldering, to the casing. One insulator may support more than one socket. According to the Provisional Specification, if the casing is plastic the insulator 7 may be moulded to it.
Patent GB-289997-A (GB)
Title: Alarm clock electric switch
IPC: G04C21/22
Filed: 1927-03-05
Abstract: 289,997. Shooter, R. W. March 5, 1927. Clockwork actuation. -An ordinary alarm clock is adapted for switching on a current, e.g. to a wireless receiving set, at a predetermined time, by fitting the back of the clock case with a socket A into which a plug D is inserted, the winding handle C of the alarm mechanism coming into contact with the plug D when the alarm goes off. The socket A may be of ebonite, the handle C being adapted to complete a circuit from the plug D to the clock case F and thence to a brass socket B and plug, E, as in the construction shown. In a modification, the winding handle C carries on its end and insulated from it a sleeve of brass which is connected to one end of the circuit and is adapted to move into engagement with the plug D, the second plug E and socket B being dispensed with. Specifications 4445/96, 25861/01, [both in Class 139, Watches &c.], and 22263/08 are referred to.