baber/WOPTO huggingface dataset:
Patent GB-794865-A (GB)
Title: Improvements in and relating to electrical apparatus for periodically operating a switching means
IPC: H03K5/00
Filed: 1956-04-03
Abstract: 794,865. Switching systems. LACEY, C. L. Aug. 10, 1956 [April 3, 1956], No. 10126/56. Class 38 (4). [Also in Group XL (c)] In a circuit for periodically operating a switching device such as relay A, a thermionic discharge tube generator V1, V2 is employed, the output being applied to a semi-conductor amplifier T1 which operates the device A. Since the apparatus is designed to operate from a low voltage the output from the generator V1, V2 is not sufficient to provide the input current to transistor T1 so an intermediate amplifier V3, V4 is added. The frequency of generation and. the mark-to-space ratio is determined by the setting of grid resistors R4, R6. The coupling between tube V2 and V3 may be capacitorresistor. It is stated that a resistor R9 in the heater circuit of tube V1, V2 stabilizes the frequency of oscillations against variations in supply voltage, and a resistor R10 connected across the supply is also stated to have an advantage in this respect. The circuit may be energized over a rectifier MR1 from a low voltage alternating current supply and may feed the pulsator of a milking machine.
Patent GB-1176093-A (GB)
Title: Improvements in or relating to Phenyl Arylacylpiperidinols
IPC: C07D307/79
Filed: 1968-02-15
Abstract: 1,176,093. Phenyl arylacylpiperidinols. SMITH KLINE & FRENCH LABORATORIES. 15 Feb., 1968 [6 March, 1967], No. 10142/69. Divided out of 1,176,091. Heading C2C. Novel compounds of the Formula (I) where R is at the 5- or 6-position and is hydrogen, chloro, bromo, fluoro, trifluoromethyl, lower alkyl of 1 to 4 carbon atoms, or lower alkoxy of 1 to 4 carbon atoms; R<SP>1</SP> is hydrogen, chloro, bromo, methyl, trifluoromethyl, fluoro, or methoxy; R<SP>2</SP> is hydrogen or methyl; Y is oxygen or sulphur; and n is 2, 3 or 4 are prepared by, when n is 3, treating an ester anhydride of the Formula (VI) with a 4-phenyl-4-piperidinol. When n is 2, instead of the ester anhydride, the corresponding acetyl chloride is used. When n is 4, the corresponding propionic acid is homologated by the Arndt-Eistert reaction, the resulting diazoketone being treated with a 4-phenyl-4-piperidinol in the presence of silver oxide. The diazoketone may be hydrolysed with aqueous silver oxide to the butyric acid, which is then converted via its acid chloride to the product of Formula (I). The preparation of the starting materials is disclosed in Specification 1,176,091.
Patent GB-1018459-A (GB)
Title: Dis azo-disulfide dyes and method for making same
IPC: C09B49/00
Filed: 1964-03-10
Abstract: The invention comprises disazo dyes of formula <FORM:1018459/C4-C5/1> wherein R is the residue of a pyrazolone coupling component which are prepared by coupling one mole of tetrazotized 4,41-diamino-3,31-dimethoxydiphenyldisulphide with 2 moles of a pyrazolone.  The dyes may be used to colour cotton and regenerated cellulose materials, by a reduction-oxidation process, in orange shades.
Patent GB-1174687-A (GB)
Title: Device for Longitudinally Registering Printed Webs of Material
Inventor: ROHRDANZ ALBRECHT
IPC: B65B41/18
Filed: 1967-03-03
Abstract: 1,174,687. Feeding webs. INSTITUT FœR NAHRUNGSMITTEL-, GENUSSMITTEL- und VERPACKUNGMASCHINEN. 3 March, 1967, No. 10207/67. Heading B8R. A web is fed to a packaging machine either intermittently or continuously by a pair of feed rollers 11, 13. Longitudinal register is achieved by driving the rollers via one or other gear trains 6, 8 or 7, 9, selectable by a photo-electric control device sensing marks on the web.
Patent GB-940466-A (GB)
Title: Improvements in or relating to a combined blind and window unit
IPC: B65D19/06
Filed: 1962-03-16
Abstract: 940,466. Window blinds. POLARPANE CORPORATION. March 16, 1962 [March 16, 1961], No. 10214/62. Heading E1J. A hermetically sealed double glazed window contains within its interspace a vertical or horizontal magnetically operated rotatable slat blind. The vinyl plastic coated aluminium or fabric slats 15 have ball ended supporting rods 42 in fixed nylon bearing sleeves 35 having a central bore 39 with a lipped inner end 37, which rods have L-shaped operating rods 46 connected to them at one end, and slotted into a hollow vertical, magnet housing 45 at the other. A vertical magnet 18 is stuck in this housing, which is held against a vinyl plastic H-shaped blind supporting member 27 by a further magnet 51. The housing 45 is operated from outside by a third magnet 52, which moves the housing up and down, rotating the slats.
Patent GB-161523-A (GB)
Title: Improvements in or relating to locking devices for cycles, automobiles and other vehicles
IPC: B62H5/14
Filed: 1921-04-07
Abstract: 161,523. Galland, C. A. April 8, 1920, [Convention date]. Guarding against unauthorized use.-Means for preventing unauthorized use of cycles, motor road vehicles, and other vehicles comprise a flat casing 14 in which are pivotally mounted a pair of jaws 1, 2 adapted to be opened and closed by a push button 11 so as to grip a stationary and a movable part of the vehicle. As shown, a wedge-piece 9 is arranged between the arms 4, 5 and connected to the push-button 11 by a rod 10. The wedge is depressed against the action of the spring 12 to close the gripping-jaws, and is locked in this position by a rod 9<1>, secured to the wedgepiece engaging under a spring-plate 19. The wedge is released by pressing the spring-plate sideways by a suitable key entered through an aperture 16 in the casing, and guided by a rod 17. The rod 10 is guided by a diaphragm 13 and a tube 15, secured to the push-button.
Patent GB-587942-A (GB)
Title: Improvements relating to demodulation arrangements in electrical pulse modulation communication systems
IPC: H04J3/04
Filed: 1944-05-26
Abstract: 587,942. Pulse modulation. STAN DARD TELEPHONES & CABLES, Ltd., and LEVY, M. M. May 26, 1944, No. 10309. [Class 40 (v)] A demodulating arrangement for producing duration modulated pulses from time phase modulated pulses is shown in Fig. 2 in which the H.F. receiver and detector 5 produces timemodulated pulses which, after passing through a limiter 5a, are fed to channels 1 ... 6 through respective isolating diodes 6. Each channel comprises a build-back circuit which, in addition to the time-phase modulated pulses, receives channel selector pulses and produces duration modulated pulses which are demodulated in low-pass filter 12 and the modulation reproduced at 13. Channel selector pulses having the same frequency as the modulated pulses are produced by a generator 2 and passed to a distributer 1 of the kind described in Specification 587,939 so that tappings TP1 . . . TP6 supply successive selector pulses to channels 1... 6. The channel selector pulses are synchronized with the modulated pulses by means of synchronizing pulses sent out from a similar distributer at the transmitter. The build-back circuit in channel No. 1 comprises reciprocally coupled valves 7, 8, valve 8 being biassed beyond cutoff by source 9. Positive channel selector pulses from tapping TP1 are just insufficient to render valve 8 conductive for the channel period. During this period a negative channel pulse is applied through diode 6 to the grid of valve 7. This applies a positive pulse to grid of valve 8 which conducts and remains conductive until the end of the selector pulse from TP1. Thus, a duration modulated pulse can be taken from the anode of valve 8, of which the trailing edge is fixed by the end of the selector pulse and the leading edge is varied according to the time phase modulation of the channel pulse. These pulses are demodulated at 12 and reproduced at 13. By keeping the amplitude of the channel pulses about one half that of the selector pulses it is ensured that the build-back circuit is not operated except during the appropriate channel period. In the build-back circuit shown in channel No. 6, the valve 8 is replaced by a pentode 15 to the grid of which the selector pulses are fed through a reshaper 21. The duration modulated pulses are taken from the screen grid.
Patent GB-458723-A (GB)
Title: Improvements in or relating to the coating of metallic surfaces
IPC: C23F11/12
Filed: 1936-04-08
Abstract: A method of making a metallic surface non-wettable by oil consists in first cleaning the surface and then applying a film of ferric stearate.  The metal may be cleaned by electrolytic treatment or by immersion in a cleaning agent such as caustic soda solution, carbon tetrachloride, or benzene, and the ferric stearate may be applied in molten condition, or as a solution in a volatile solvent such as a hydrocarbon.  By this means, creeping of oil on lubricated parts, or on to electrical contact points, may be prevented.  Specifications 15829/01, [Class 140], and 253,517, [Class 12 (iii)], are referred to.  According to the Specification as open to inspection under Sect. 91, metallic soaps generally may be used, but this subject-matter does not appear in the Specification as accepted.
Patent GB-232641-A (GB)
Title: Electric regulating system
IPC: H02P9/24
Filed: 1925-04-21
Abstract: 232,641. British Thomson-Houston Co., Ltd., (Assignees of Thompson, L. W.). April 21, 1924, [Convention date]. Regulation, automatic. - The voltage of an alternating curent machine 1 is automatically regulated by electron discharge tubes 12, 13 arranged to deliver rectified currents, in proportion to the voltage, into a relay coil 22 controllling graded vibratory contactors 24, 25 which vary the amount of resistance 9 in the field of an excited machine 7. The heating current of the filaments 17, 18 is taken from tappings of the transformer 14 which furnishes the discharge currents.
Patent GB-793605-A (GB)
Title: Improvements relating to the preparation of hydrogen-nitrogen gas mixtures from coke oven gas and apparatus therefor
IPC: F25J3/02
Filed: 1956-04-05
Abstract: 793,605. Cold separation of gas mixtures. STAMICARBON N.V. April 5, 1956 [April 7, 1955], No. 10477/56. Class 8(2). A mixture of hydrogen and nitrogen is separated from coke oven gas previously freed from readily condensible constituents by washing in a column with liquid nitrogen supplied by a compressor 3, Fig. 3, through a duct 6 and an expansion valve 6a, the coke oven gas being supplied through a duct 4 to the base of the column and being cooled during its upward passage by indirect heat exchange with liquid nitrogen supplied from the compressor 3 through a valved duct 7 to a condenser 2 located within the column at an intermediate level thereof. Nitrogen vapour from the condenser 2 is returned through a duct 8 to the compressor 4 which has a nitrogen feed inlet duct 3a. Product gaseous mixture leaves the column head through a duct 5 and a mixture of liquid methane, carbon monoxide and nitrogen is withdrawn through a valved duct 11. In a modification the column comprises a lower portion to which the coke oven gas is supplied through a duct 4, Fig. 4 and which houses the condenser 2 and an upper portion to which is supplied through a duct 13 partly separated gas from the head of the lower portion of the column and the washing liquid nitrogen through the valved duct 6. Liquid from the base of the upper column portion is fed through a duct 12 to act as washing liquid for coke oven gas ascending the lower column portion.
Patent GB-1352048-A (GB)
Title: Character recognition devices and document readers incorporating such devices
IPC: G06V30/10
Filed: 1971-04-21
Abstract: 1352048 Character recognition systems COMPAGNIE INTERNATIONALE POUR L'INFORMATIQUE 21 April 1971 [24 April 1970] 10577/71 Heading G4R In a character recognition system the character is scanned twice. The first scan establishes a pulse when the character is symmetrically straddled over the scan transducer during the second scan, and also establishes a signal indicative of the vertical displacement of the character from a desired position. The scanner may include a single array of photo-detectors over which the character is swept twice by an optical projection system, and the character may be recognized by optical matching. However, in the embodiment described in detail the scanner includes two spaced arrays of detectors, each comprising a single line of detectors vertical with respect to the character image which is swept first over one and then over the other. The are m + n cells in each array, the character height being m and the extra n cells accommodating n increments of vertical offcentring. During the first scan the m+n detector outputs (4, Fig. 3, not shown) are converted (23) to 2-state signals prior to being read into a shift register store (38). The signals also feed an OR gate (24) which gives a timing pulse which is present when any part of the character is sensed by a detector and therefore corresponds to the character width. The timing pulse enables a gate (39) to pass clock pulses to control the store (38). The serial output of the store feeds a unit (41, 42) which includes a counter and which generates an n-bit signal indicative of the vertical misalignment. The timing pulse is also fed to a delay which corresponds to the time for the character to pass from one array of detectors to the other. Alternatively in the case of optical matching, the timing pulse feeds an arrangement (26) of counters and bi-stables which delivers a pulse at the instant at which the character is horizontally centred over the second array. During the second scan the m+n 2-state signals derived from the second array (5, Fig. 4, not shown) are fed to a store (45) which is also fed with the n-bit vertical misalignment signal. The store is arranged to compensate for the misalignment and deliver m-bit signals to recognition circuits (49, 50) which are also fed with clock pulses for the duration of the delayed timing pulse, i.e. while the character is passing the second array. The recognition circuits give a single output identifying the character.
Patent GB-103286-A (GB)
Title: Improvements in Regulating Devices for Fluid Conduits.
Inventor: DALEN GUSTAF
IPC: F16K5/10
Filed: 1916-07-27
Abstract: 103,286. Dalen, G. Tan. 5, 1916, [Convention date]. Fluids, regulating volume of flow of.-A device for regulating the flow of fluids, of the type in which a mass of porous material in the fluid conduit is adjustably compressed, has the porous mass so connected to the adjusting screw, that the whole can be removed in one piece from the enclosing-chamber for renewal or repairs. The porous mass 12 of asbestos fibre has a spring insertion 20 and is arranged in a recess 11 formed in a screwed plug 3 between a perforated washer 15 and a washer 30. The adjusting-screw which works in a screwed plug 33, bears against the washer 30 and has a reduced split end screw-threaded and fitted with a nut 28 adapted to clamp the adjusting-screw to a headed pin 21 passing through the mass and securing it to the adjusting-screw. The plugs 3, 33 are spaced apart to form a gas passage, and a notch 31 is provided in the washer 30 to facilitate the passage of fluid. The adjusting-screw is protected by a cap 40.
Patent GB-859867-A (GB)
Title: Apparatus for measuring the quantum yield of luminescent powders
IPC: G01J3/28
Filed: 1959-03-26
Abstract: 859,867. Photo-electric measurements. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R. T. March 26, 1959 [March 26, 1958], No. 10660/59. Class 40(3). The quantum efficiency of a luminescent powder, i.e. the ratio of the numbers of excited and exciting photons, is determined from measurements of the excited and exciting radiation energy by the use of a photo- or thermoelectric detector in conjunction with an optical system so arranged that the spectral sensitivity of the combination is proportional to wavelength. In a first arrangement, Fig. I, where 11 indicates a source of exciting radiation and 12 the luminescent powder, the desired proportional relationship is brought about by associating the photo-electric detector 20 with a spectroscope system 14, 15, 16; 19 in which a suitably shaped templet 18 (see Fig. 2) is placed adjacent to plane 17 of the spectrum so as to allow the correct amount of radiation at each wavelength to pass to establish the relationship. According to a modification, Fig. 3 (not shown), part of the templet is screened by a filter. In a second arrangement, Fig. 4 (not shown), the desired proportional relationship is produced by the use in conjunction with the detector of a combination of spectral filters, of which suitable types are specified. Reference is also made to the use of a double monochromotor with a suitably shaped templet and an interference filter spectroscope.
Patent GB-884640-A (GB)
Title: New polyolefinic alcohols and a process for their preparation
IPC: C11B9/00
Filed: 1959-08-04
Abstract: The invention comprises compounds of the formula <FORM:0884640/IV (b)/1> where R is an alkyl group, R1 is hydrogen or an alkyl or aralkyl group, R2 is a alkyl group, n is 2 or 3, the groups between the parentheses being the same or different, and a process for their preparation which comprises reacting a ketone of the formula <FORM:0884640/IV (b)/2> with an organo-magnesium halide of the formula <FORM:0884640/IV (b)/3> where X is halogen, hydrolysing the product to give an alcohol of the formula <FORM:0884640/IV (b)/4> treating the alcohol with a hydrohalic acid to give a halogen derivative of the formula <FORM:0884640/IV (b)/5> where X is halogen and converting the halide into the corresponding alcohol by known methods.  The halide is preferably converted by treatment with potassium acetate in acetic acid to give the acetate ester which is then saponified with methanolic potassium hydroxide.  Examples describe the preparation of alcohols of the general formula in which R is methyl or ethyl, R1 is hydrogen, methyl or ethyl, R2 is methyl and n is 2 or 3 and the corresponding acetates.  Specifications 884,637 and 884,639 are referred to.
Patent GB-141758-A (GB)
Title: Improvements in or relating to processes for the production of hydrogen peroxide
IPC: C01B15/03
Filed: 1920-04-17
Abstract: An alkali persulphate, e.g. ammonium persulphate produced electrolytically, is separated from the greater part of the electrolyte by means of a vacuum or centrifugal filter, and is placed in a steam-jacketed horizontal tube into which steam is introduced and which is connected through the medium of a condenser to a vacuum pump.  The hydrogen peroxide produced collects in the condenser, and the residue of alkali bisulphate remaining in the tube, after dissolving in a quantity of water, can be returned to the electrolytic chamber since the ratio of base to sulphuric acid has not been changed.
Patent GB-921213-A (GB)
Title: Improvements in and relating to loudspeaker enclosures
IPC: H04R1/28
Filed: 1958-04-03
Abstract: 921,213. Loud-speaker enclosures. J. S. MURRAY. April 3, 1959 [April 3, 1958; Aug. 5, 1958], Nos. 10767/58 and 25113/58. Class 40 (4). [Also in Group XXXVIII] A folded pipe having at one end an aperture in which to mount a sound-radiating diaphragm has its ends connected by an acoustic resistance having an impedance between one and sixteen times the characteristic impedance or average characteristic impedance of the pipe. A box 14, Fig. 4, has an aperture for insertion of a loudspeaker 12, and a partition 15 divides the box to provide a closed folded pipe construction. An aperture in the partition is fitted with an acoustic resistance 16 comprising screens, slots, holes or felt. Isothermalizing packing 17 is provided at one or both ends of the pipe. The pipe may be folded twice, Fig. 5. In another arrangement, in addition to an acoustic resistance 25, Fig. 6, connecting the ends of the pipe, there is an acoustic resistance 26 leading to free air mid-way along the acoustic length of the pipe, and one or more acoustic resistances 27, leading to free air, at the end of the pipe remote from the loud-speaker 24. Acoustic resistance 28 leads to a restricted space. The ratios of resistances 25, 26, 27, 28 are 4 : 1 : 2 : 4, resistance 26 being approximately equal to the characteristic impedance of the pipe. Packing 32 having its grain parallel with the length of the pipe improves the constancy of the cross-section of the pipe and damps high frequencies.
Patent GB-128751-A (GB)
Title: Moving Panels for Masking Walls of Lift Shafts and other purposes.
Inventor: KORESSIOS THEODORE NICHOLAS CO
IPC: G09F19/22
Filed: 1918-07-02
Abstract: 128,751. Koressios, T. N. C. July 2, 1918. Lift wells, screens preventing access to.- Panels are adapted to be picked up by a lift cage after leaving its stopping place, to be held before the doors of the lift during its motion, hiding the lift shaft, and to be freed and left behind by the cage immediately before reaching its destination. The panel may be taken up and released mechanically or electricall,v, A mechanical method is shown in Figs 2, 3. and 4, wherein toothed rails 24 down the shaft are engaged by a shoe 10 having similar teeth and fixed one to each top corner of the panel. The shoe 10 is spring pressed towards and forced into engagement with the rail 24 by a pivoted trigger 13 actuated by a wheel 25 carried by the cage. The shoes 10, together with the panels, are held to the rails 24 by double hook arms 17 which engage U-members 16 running down the rails 24. Figs. 2, 3, and 4 show respectively the top locked position, the free travelling position, and the bottom locked position of the shoes 10 and trigger 13. Several panels may be hung on the rails 24, each to travel along a given section only of the shaft. In a modification the panels are movable in two vertical slotted rails of each side of the gate of the lift, the panel slipping up or down out of sight when the cage reaches the bottom or top landing. In another form a flexible panel rolls on to one or the other of two rollers, placed respectively over and under the gate of the lift.
Patent GB-839037-A (GB)
Title: Improvements in temperature change detectors and methods of manufacture thereof
Inventor: GRIFFITH RUPERT
IPC: G01K7/34
Filed: 1956-04-10
Abstract: 839,037. Insulating cables. GRAVINER MANUFACTURING CO. Ltd., and WILKINSON SWORD Ltd. July 9, 1957 [April 10, 1956], No. 10858/56. Class 36. A temperature-change detector utilizing change of electric resistance employs a filling 12 of glass or other temperature-sensitive material between the outer and inner electrodes 11, 10, the latter being a wire or tube having a winding 13 of a single strand of quartz fibre to prevent actual contact between the two. Alternatively the winding may comprise a braiding of woven fibres or a braiding of woven refractory fibres and temperature-sensitive fibres may be wound on the inner electrode on which is wound a spiral of metal strip that is sealed by continuous seam welding. In Fig. 3, individual refractory fibres 13 2  alternate with a number of temperature-sensitive fibres 12 2 , the outer conductor being drawn down on to the inner by drawing through a die 16 or by swaging. In a modification (Fig. 2, not shown) the glass may be inserted in tubular form and melted by heating the outer conductor progressively along its length. Specification 740,884 is referred to.