baber/WOPTO huggingface dataset:
Patent GB-647828-A (GB)
Title: Improvements in and relating to pulse producing systems
IPC: H03K5/00
Filed: 1947-08-11
Abstract: 647,828. Radio navigation; pulse circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 11, 1947, No. 22259. Convention date, June 15, 1944. [Classes 40 (vi) and 40 (vii)] Trains of high- and low-frequency pulses are applied to a trigger circuit so that pulses are produced at the lower frequency having a duration equal to the separation between a lowfrequency pulse and the succeeding highfrequency pulse. The circuit is described as applied to a "Loran" system, the lowfrequency pulses being derived from a highfrequency source by division. A 20 kc/s. pulse source 6, Fig. 2, charges a capacitor 15 in steps, over diodes 7 until the grid potential of blocking oscillator 16 rises sufficiently for it to conduct and discharge the capacitor. The bias on valve 16 is adjustable by resistor 19 so that a frequency division of ten may be obtained. Further division by five and eight takes place in dividers 28, 29, the 50 c/s. output pulse being applied over diode 52 to reverse the trigger pair 36, 37. The output from valve 16 is also fed over diode 57 to the trigger pair so that it restores at the next 2 kc/s. pulse. The output from valve 37 controls the saw-tooth scan generator 77 and provides the black-out waveform for the cathode-ray tube 75. The output from valve 36 is differentiated and then divided by two in divider 63, to produce two square waves of opposite sign and 25 c/s. frequency. One is used to operate a flip-flop 64 to generate a pulse of fixed duration, the other operating a flip-flop 65 to give a pulse of variable duration. The two waves are fed to a further flip-flop 68 generating a pulse of constant duration and triggered from the back edge of either pulse. Calibration markers are added by feeding the 20 kc/s., 2 kc/s. and 400 c/s. pulses through a mixer-distorter 34. The opposite vertical plate of the cathode-ray tube is fed with the 25 c/s. square wave to give the two traces 82, 83, Fig. 4, and also with signal from receiver 861. Operation of the system.-The signals from two ground stations produce indications 88, 89, Fig. 4. Signal 88 is set on pedestal 72 by altering momentarily the rate of division by feeding back the 50 c/s. pulses over variable capacitor 95 and diodes 96, 97 to increase the charge on capacitor 15, thus decreasing the number of 20 kc/s. pulses needed to trigger valve 16. When the signals are in the position 92, 93 the pedestal 69 is shifted by adjustment of the delay in flip-flop 65 to the position 69<SP>1</SP>, 93<SP>1</SP>, the time separation being indicated by the interval X. When reception is required from another pair of ground stations of slightly different recurrence rate the capacitor 95 is set to give a suitable division ratio.
Patent GB-1472659-A (GB)
Title: Medicinal dressings
IPC: A61L15/28
Filed: 1974-05-18
Abstract: 1472659 Medicinal dressings comprising starch hydrolysate A N SILVETTI 18 May 1974 22277/74 Heading C3U [Also in Division A5] A medicinal dressing comprises a starch hydrolysate material having a DE of less than 35 which may be in dry particulate form or in the form of a highly viscous gel, paste or syrup. The starch hydrolysate may be adhered to a bibulous backing material (see Division A5).
Patent GB-383246-A (GB)
Title: An improved device for improving the load curve of induction measuring apparatus
IPC: G01R11/36
Filed: 1932-08-09
Abstract: 383,246. Supply meters. LANDIS & GYR AKT.-GES., 1, Hofstrasse, Zug, Switzerland. Aug. 9, 1932, No. 22287. Convention date, Aug. 14, 1931. [Class 37.] The load curve of induction meters is improved on low and high loads, in meters provided with magnetic shunts fixed to the current core, by constructing and locating the shunt so that the lines of force ineffective for driving are conducted through the shunt and around the driving disc. The shunt comprises U-shaped members 5, 6 straddling the rotor 4 and having surfaces secured to the current core poles which are smaller in surface area. The upper surface 7 of the shunt is cut away to accommodate the pole 8 of the voltage core, and airgaps 12 are formed. The shunt may comprise a magnetic bridge associated with the members 5, 6 and intervening airgaps.
Patent GB-1108958-A (GB)
Title: Improvements in or relating to apparatus having a seal between two co-axial elementswhich are movable relative to one another
IPC: F25B9/14
Filed: 1965-05-26
Abstract: 1,108,958. Refrigerating. PHILIPS' GLOEILAMPENFABRIEKEN N.V. 26 May, 1965 [29 May, 1964], No. 22362/65. Heading F4H. [Also in Division F1] A cold gas refrigerator has a piston and cylinder and a seal, e.g. a rolling diaphragm seal, between them, and a variable volume space additional to the working space is provided in heat conducting relationship with the seal and which generates heat or cold as arranged according to whether the seal would otherwise become too cold or too hot. For example, in Fig. 10 which shows an engine of the displacer type, rolling diaphragm seals 111, 113 between the piston 116 and the cylinder, and between the piston and displacer rod respectively are associated with additional spaces 114, 115 connected to the compression, space 6 through gaps 110, 112 the surfaces adjacent which form regenerating means. The gaps ensure that the pressure in the additional and working spaces are substantially the same, and the volume variations in the additional spaces are arranged to be out of phase with the pressure variations so that there is a net emission of heat, i.e. the additional spaces heat their surroundings including the seals. The gaps may be replaced by regenerators and the parts of the piston adjacent the seals may be separated from the working space by heat-insulating material (e.g. Figs. 3-5, not shown). Additional spaces may be formed by bores (95, 96) within the piston or pistons (82, 83) (Fig. 9, not shown, which is of a two-piston hot gas engine), the bores (95, 96) containing pistons (97, 98) fixed to the cylinder. This method of forming additional spaces is also used where the apparatus has piston ring seals instead of rolling diaphragm seals (Figs. 14-15, not shown).
Patent GB-356402-A (GB)
Title: Improvements in or connected with coupling devices for connecting scaffolding and like tubes and rods together
IPC: E04G7/14
Filed: 1930-07-25
Abstract: 356,402. Scaffolding clamps. SCAFFOLDING (GREAT BRITAIN), Ltd. and JONES, D. PALMER-, 344, South Lambeth Road, London. July 25, 1930, No. 22452. [Class 20 (ii).] A scaffold clamp comprises a grooved intermediate piece between the bodies clamped and clamping levers on each side for clamping. The e intermediate piece C is formed with opposed grooves F, G disposed at the angles required, and adjacent to these grooves with flat bearing faces C<1> provided with lips C<2> to form abutment fulcrum surfaces for the edges of clamping levers D which are formed rounded on their outer edges D<2> and with recessed under faces D<5> and grooved gripping faces D<4>. The bodies A, B are clamped by means of bolts H passing through apertures in the clamping levers disposed between the fulcrumed and gripping edges and screwing into the intermediate piece, rounded portions H<3> on the bolt heads engaging corresponding recesses in the face of the levers.
Patent GB-717693-A (GB)
Title: Heat-activatable delayed-setting adhesive products
IPC: C09J7/35
Filed: 1951-09-26
Abstract: A synthetic resin composition comprises the solidified homogeneous fusion product of a synthetic resinous adhesive material with a quantity of a solid plasticizer in excess of that permanently compatible with the resinous material at room temperature.  The fusion product may be finely powdered after solidification and dispersed in water, with or without the addition of a water-dispersible adhesive substance, to form a heat-activatable adhesive coating composition.  The resin may be polystyrene, polyindene, polyvinyl acetate, hydrogenated rosin, polymerized rosin, an adduct of maleic anhydride and pentaerythritol ester of rosin, glyceryl ester of polymerized rosin or a pentaerythritol ester of polymerized rosin acids.  The plasticizer may be acetanilide, dicyclohexyl phthalate, diphenyl phthalate, N-ethyl or N-cyclohexyl paratoluene sulphonamide, tri (para tert.-butyl phenyl) phosphate or a terphenyl.  The water-dispersible adhesive substance may be polyvinyl alcohol, dextrin, modified starch, solubilized casein, solubilized soy protein, animal glue, natural rubber or a styrene-butadiene, styrene-isoprene, butadiene-acrylonitrile or acrylonitrile-methylacrylate copolymer.ALSO:A resinous composition comprises the solidified homogeneous fusion product of resinous adhesive material with a quantity of a solid plasticizer in excess of that permanently compatible with the resinous material at room temperature.  The fusion product may be finely powdered after solidification and dispersed in water, with or without the addition of a water-dispersible adhesive substance, to form a heat-activatable adhesive coating composition.  The resin may be wood rosin, kauri copal, mastic resin, sandarac resin, or rosin.  The plasticizer may be acetanilide, dicyclohexyl phthalate, diphenyl phthalate, N-ethyl or N-cyclohexyl phthalate, diphenyl phthalate, N-ethyl or N-cyclohexyl patatoluene sulphonamide, tri (para tert.-butyl phenyl) phosphate or a terphenyl.  The water-dispersible adhesive substance may be polyvinyl alcohol, dextrin, modified starch, solubilized casein, solubilized soy protein, animal glue, natural rubber or a styrene-butadiene, styrene isoprene, butadiene-acrylonitrile or acrylonitrile-methyl acrylate copolymer.
Patent GB-1039687-A (GB)
Title: Process for refining metal
IPC: C21C7/072
Filed: 1963-06-06
Abstract: A process for refining metal in the molten state comprises blowing a halogen or halogen compound other than carbon tetrachloride onto the surface of a melt covered by a slag so as to remove hydrogen from both melt and slag.  The halogen or halogen compound may be used in either solid or vapourized form, and may be transported to the melt by means of a carrier gas.  In the example, sodium fluoride is delivered using argon as carrier gas from a nozzle positioned 300 mm above the surface of the melt.
Patent GB-217106-A (GB)
Title: Improvements in or relating to dough-making machines
IPC: A21C1/02
Filed: 1923-09-08
Abstract: 217,106. Collins, T. B. Sept. 8, 1923. Discharging by tilting container. - A doughmaking machine of the kind comprising a pan rotatably mounted on a wheeled carriage is provided with means on the carriage for tilting the pan about an axis located in front of the pan. The pan 1 mounted on the carriage 2 is supported on rollers and rotated by bevel gear from a, shaft 5. The carriage is provided with brackets 9 supporting a cross shaft 10 on which quadrants 11 are mounted. The quadrants are operated by worm gearing on shafts 22 driven by chain and bevel gear from a hand wheel 16, and are fitted with inwardly projecting rollers 12 which engage between lugs 14, 15 on the pan. The pan is also provided with lugs 27, 28 which engage a block 26.
Patent GB-260556-A (GB)
Title: Stockless anchor
IPC: B63B21/44
Filed: 1926-09-15
Abstract: 260,556. Henschel & Sohn, Ges. Oct. 29, 1925, [Convention date]. Anchors. - A stockless anchor has a central through opening c contracting tawards the top, through which the shank f is passed, in assembling the anchor, with circular yoke pieces e forming pivots for the pivot pin h The locking device comprises a ring i which may be a spring ring, sprung into grooves k in the head.
Patent GB-1513164-A (GB)
Title: Target structure for use in photoconductive image pickup tubes and method of manufacture thereof
IPC: H01L31/08
Filed: 1975-05-23
Abstract: 1513164 Image pick-up tubes; photoconductive targets HITACHI LTD and NIPPON HOSO KYOKAI 23 May 1975 [21 June 1974] 22754/75 Headings H1D and H1K A photoconductive target structure for an image pick-up tube comprises a transparent substrate 2, an N-type transparent conductive film 3, and a P-type photoconductive film 5 forming heterojunction 4 containing As, Se and Te wherein the thickness of the Te containing portion is 500 Š to 5000 Š and the starting point of said portion is 80 Š to 1500 Š from the junction 4. The arrangement reduces Te crystallizations resulting in local decreases in resistance and white spot picture defects. An N-type semiconductive layer 6 may be included (Fig. 2) and optional semiporous film 6 may be antimony trisulfide. Deposition procedures are detailed in which commencement of the deposition of a first plc material of Se with Te is after that a second plc material of Se and As and terminates before the latter producing distributions as in Fig. 2b (not shown). Depositions may be controlled by shutter or control of currents to Ta boats. Preferably layer 5 consists overall of Se, <30 atomic wt. % Te and <30 atomic wt. % As. Other concentrations are given. Film 3 may be indium oxide, stannic oxide, indium oxide with stannic oxide or stannic oxide with antimony, layer 6 may be CdSe, CdS, ZnS, gallium arsenide, Ge or Si, and film 5 may be 2 to 10 Á thick. Tube characteristics are discussed w.r.t., Figs. 3 to 7 (not shown). The target structure may be sealed to the glass envelope by a metallic binder such as In acting as an intermediate conductor to a terminal. The pick-up tube may be for colour or monochrome applications.
Patent GB-1058838-A (GB)
Title: Improvements in or relating to spray outlet devices
Inventor: BREDSCHNEIDER BRUNO
IPC: B05B1/26
Filed: 1964-06-02
Abstract: 1,058,838. Nozzles. BODENBEARBEITUNGSGERATE VEB. June 2, 1964, No. 22764/64. Heading B2F. A spray nozzle suitable for use with apparatus for spraying liquid on to crops comprises a tube 2 extending horizontally from a pipe 1 adapted to be supplied with compressed air, a liquid supply pipe 5, and a plate 3 and a baffle plate 6 which make contact at 9 and together with the shaped outlet of the tube 2 define the nozzle outlet 4. The upper part 7 of the baflle plate 6 is parallel to the axis 8 of the tube 2 and extends above the end of the pipe 5. A plurality of outlets may be provided and they may distribute a powder or suspension instead of a liquid.
Patent GB-1192729-A (GB)
Title: Benzodiazepine Derivatives and a Process for the Manufacture Thereof
IPC: C07D243/26
Filed: 1969-05-05
Abstract: 1,192,729. Benzodiazepine derivatives. F. HOFFMANN-LA ROCHE & CO. A.G. 5 May, 1969 [7 May, 1968], No. 22779/69. Heading C2C. Compounds of the general formula (R = H or alkanoyl containing up to 7 carbon atoms) and their acid addition salts are prepared by reacting the 1-sodio derivative of 7- chloro - 5 - (o - fluorophenyl) - 1,3 - dihydro- 2H - 1,4 - benzodiazepin - 2 - one with a 2- haloethanol or ethylene oxide, optionally followed by esterification and/or salt formation. The above compounds are sedatives, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-170951-A (GB)
Title: An improvement in shovels or spades
IPC: A01B1/02
Filed: 1920-08-03
Abstract: 170,951. Griffin, R. Aug. 3, 1920. Spades and shovels. - The blade of a shovel or spade is strengthened by means of a central corrugation tapering from the top to the bottom and two side corrugations tapering to a point at both ends, the length of the corrugations being approximately two-thirds of that of the blade. A handle socket f, Fig. 2, extends upwardly from the central corrugation a. The side corrugations h, i may be parallel or inclined to one another. In a modification, the central corrugation ends in a round raised part j, Fig. 4. According to the Provisional Specification, there may be two or more corrugations on each side of the central one.
Patent GB-451064-A (GB)
Title: Improvements in or relating to furnaces for burning coal
IPC: F23K3/14
Filed: 1935-08-15
Abstract: 451,064. Pneumatic conveyers ; combustion processes. PEARSON, J. W., 5, Collegiate Crescent, and WARREN, E., 5, Oswestry Road, both in Sheffield. Aug. 15, 1935, No. 22980. [Class 78 (i)] [See also Group XII] In apparatus for feeding coal containing a large percentage of dust to a furnace, the dust is separated and conveyed to a burner in the upper part of the combustion chamber by an air current, and the larger particles are fed mechanically to the firegrate. A screw conveyer 5 feeds the coal from a hopper 4 to a vertical chamber 6 up which a current of air is drawn by a fan 15. The dust passes with the air through a duct 13 provided with a fine mesh screen 14 into the fan, and is delivered through a pipe 17 to the burner 17a. The larger particles fall into a hopper 7 from which they are delivered by a rotary valve 10 to a screw conveyer 9 arranged below the firegrate 3. Baffles 19 in the chamber 6 spread the coal and facilitate separation. An air supply pipe 20 has branches 21, 23 through which primary air is fed to the air spaces below the firegrate 3, and secondary air to the burner 17a, respectively.
Patent GB-1423707-A (GB)
Title: Tetrafluoroethylene fine powder resin
IPC: C08F14/00
Filed: 1973-05-15
Abstract: 1423707 Tetrafluoroethylene/perfluoro (alkyl vinyl ether) copolymers E I DU PONT DE NEMOURS & CO 15 May 1973 [17 May 1972] 23099/73 Heading C3P A tetrafluoroethylene fine powder resin which is a copolymer of tetrafluoroethylene and a perfluoro (alkyl vinyl ether) in which the alkyl group contains 1 to 5 carbon atoms, the resin having a specific melt viscosity from 1 Î 10<SP>9</SP> poises to 4.0 x 10<SP>10</SP> poises at 380 C. and a standard specific gravity of no greater than 2À175. The resin may be prepared by polymerization in an aqueous dispersion medium having ammonium persulphate or an alkali metal persulphate as polymerization initiator and a dispersing agent dissolved therein, the dispersing agent being added in a programmed manner so as to control its concentration at specific levels at various stages of polymerization. In the examples tetrafluoroethylene is copolymerized with perfluoro (methyl, ethyl or propyl vinyl)ether in the presence of water, a paraffin wax anticoagulant, ammonium perfluorocaprylate and ammonium persulphate.
Patent GB-429015-A (GB)
Title: Improvements in and relating to aggregates for concrete or other cementitious masses
IPC: C04B20/06
Filed: 1933-08-18
Abstract: Relates to the production of light weight aggregate for concrete by heating to fusion preformed bodies of ceramic material containing substances which on heating form gas to expand and vesiculate the bodies, and consists in preventing clinkering together of the bodies during firing by the provision or production, prior to or during the firing, of an outer coating or layer of less fusible material.  The less fusible coating may be applied to the bodies before they are introduced into the kiln or refractory material in powdered or granulated form may be introduced together with the bodies, e.g. into a rotary kiln, so that it coats them during their passage through the kiln.  In a modification the coating is produced by heating the bodies in an oxidizing atmosphere.  All three methods may be used in combination.  The basic raw material for the bodies is preferably an earth or clay containing one third alumina and two thirds silica.  If the fusing point is substantially above 2000 DEG  F. fluxes, e.g. lime, magnesia or iron compounds are added.  To the clay or earth are added, unless already present, 3-6 per cent of carbonaceous material, e.g. coal or coke and 3-6 per cent of a readily reducible compound that will liberate a gas in the presence of carbon at temperatures around 2000 DEG  F., e.g. calcium sulphate, oxides of iron, or mixtures thereof.  Several compounds liberating gas at different temperatures may be used, e.g. magnesium and calcium sulphates.  The mixture is moulded into rounded bodies from sand size to a size even larger than the coarsest aggregate in general use.  Before being burnt, the bodies may be coated with relatively refractory material, e.g. silica, diatomaceous earth, or burnt or raw fireclay rich in silica.  The firing may then take place in a rotary kiln.
Patent GB-498164-A (GB)
Title: Adjustable seat with movable back for aeroplanes
IPC: B64D11/06
Filed: 1937-08-24
Abstract: 498,164. Body harness. HEINKEL, E. Aug. 24, 1937, No. 23126. Convention date, Jan. 27. [Class 141] [Also in Group XIV] A seat for the pilots of aircraft has a back movable in a horizontal plane, preferably in a semicircular path, independently of the seat bottom. The back 1 is mounted to move in rollers 2 in a semicircular guide-way 3. The seat bottom is raised or lowered on levers 16 by means of a handle 15. Shoulder belts 9 worn by the pilot are connected through a cord 9<1> to a spring drum or equivalent in a casing 12 on the rear of the seat back, and a braking device which locks the drum is provided ; the brake is actuated by a lever 14 or by the seat raising handle 15.
Patent GB-531996-A (GB)
Title: Improvements in or relating to light measuring devices
IPC: G01J1/42
Filed: 1939-08-10
Abstract: 531,996. Photo-electric photographic exposure meters. SANGAMO WESTON, Ltd. Aug. 10, 1939, No. 23132. Convention date, Jan. 14. [Class 40 (iii)] [Also in Group XXV] In a photo-electric photographic exposure meter provided with means for altering the proportion of available light allowed to fall on the lightsensitive cell, these means are adapted to cause the automatic exposure of the corresponding scale of the measuring instrument. As shown, a barrier-layer cell 2 is exposed through a multiple compartment 4 and a multiple lens plate 3 as described in Specification 435,335, [Group XX], and a perforated shutter 11 is hinged at 13 and can be moved over the lens plate as shown in full lines or out of the way as shown in dotted lines. The shutter is held in the full line position by a spring bolt 14, and in the dotted line position by the knob 15 of the same bolt. A scale plate 20 carries two scales corresponding to the two positions of the shutter 11, and is slidably mounted below a window plate 8 over which moves the pointer 7 of the moving coil 6 of the measuring instrument, which has a fixed permanent magnet 5. The scale plate 20 is connected by a lever 25 to a sliding rod 28 ; and a spring 23 urges the scale plate outward and makes the rod 28 bear against the heel of the shutter 11. Hence when the shutter is in the closed position, the outer scale is exposed at the window in the plate 8 ; and when the shutter is in the open position, the inner scale is exposed.