baber/WOPTO huggingface dataset:
Patent GB-1469677-A (GB)
Title: Position sensitive device
IPC: G01D5/20
Filed: 1974-11-27
Abstract: 1469677 Detecting position electrically INTERNATIONAL BUSINESS MACHINES CORP 27 Nov 1974 [20 Dec 1973] 51374/74 Heading G1N [ Also in Division H1] In a position sensitive device as shown in Fig. 1 (prior art) comprising a first array 2 of uniformlyspaced pairs of parallel, series-connected conductors 4 mounted on a first member and connected to an oscillator 1 such that'the array radiates at high frequency e.g. 1-10 MHz, preferably 4.3MHz, a second array 5 of uniformly-spaced pairs of parallel, series-connected conductors 4 mounted on a second member movable relative to the first member, the movement being in a direction parallel to the arrays 2, 5 and at right angles to the conductors 4, and the spacing # between the pairs of conductors 4 in each array and the spacing # of the pairs in each array being equal, and detector and amplifier means 6 for detecting and amplifying signals induced in the second array 5 by radiation from the first array 2, the second array 5 is provided as in Fig. 5 with a centre tap 10 connected to ground whereby the zero potential level of the a.m. modulated signals induced in the array 5 by relative displacement of the members can be detected and amplified. As shown in Fig. 10 the induced signals are fed to a differential amplifier 13 then to a full wave rectifier 15 and through a threshold level shift 16 to be compared at 14 with a threshold reference voltage from 11. The spacing between the arrays is less than #, preferably ¢#, and the radiating array 2 may be screened by a conductive shield. The arrays 2, 5 may be mounted on either flat or cylindrical backings.
Patent GB-1129118-A (GB)
Title: Improvements in dye-sensitized photographic emulsions
IPC: C09B23/06
Filed: 1965-12-08
Abstract: 1,129,118. Supersensitised silver halide emulsions. EASTMAN KODAK CO. Dec. 8, 1968 [Dec. 8, 1964], No.51958/65. Heading G2C. A photographic silver halide emulsion contains (1) at least one sensitising dye of the formula:- wherein m is 0 or 1, n is 1 or 2, p is 2 or 3, R is hydrogen or alkyl 1-6C, A is OH, alkoxy or -NR<SP>2</SP> R 3  wherein R 2  and R 3  are each H or alkyl (substituted or unsubstituted), Q represents the non-metallic atoms required to complete a heterocyclic nucleus containing 5 or 6 atoms in the heterocyclic ring, and Q, represents -CR 4 -N-NR 5 -, -S-CW-NH 5 -, -O-CW-NR 5  -, -NR 6  -CW-NR 5  -, - CO-NR 6  -CO-NR 5  -, -CO-NR 6  -CS-NR 5  - or -NR 6  -CH=NXR 7  in which R 4  is H, alkyl 1-6C, aryl (substituted or unsubstituted), amino (substituted or unsubstituted), acylamino, sulphonamido, substituted sulphamyl or substituted carbamyl, R 5  and R 6  are H, alkyl 1-6C or aryl, R 7  is alkyl or substituted alkyl and X is an acid anion and (2) at least one polycarbocyclic aromatic compound which is not a sensitising dye but contains a sulpho group or water-soluble salt thereof as a substitute in an aromatic carbocyclic ring which is connected to or forms part of a poly carbocyclic aromatic group as a supersensitising combination. Typical sulpho compounds are those described in Specifications 893, 681 and 895, 930.
Patent GB-1451218-A (GB)
Title: Selector apparatus in electrical switching devices
IPC: H01H71/10
Filed: 1973-11-09
Abstract: 1451218 Interlock system AIRPAX ELECTRONICS Inc 9 Nov 1973 [19 March 1973] 52168/73 Heading H1N In a selector apparatus for use with a plurality of electric switches 52, 54, 56, 58, each having a manually operable handle, the handles being aligned in a given direction, at least one cover plate 100, 102, 104 is slidable along the given direction and arranged to be positioned over a selected handle 76, 77, 78, the crosssection of the or each cover plate including an indentation and an abutment located respectively to permit the cover plate to be positioned over a handle only when the handle is in a first or OFF position and to prevent it being positioned over a handle when the handle is in a second or ON position, each cover plate being guided to move along rods 82, 84. The cover plates are of unitary construction and preferably of a number one less than the number of switches so that only the handle of one switch can be in a second or ON position at any one time.
Patent GB-1373319-A (GB)
Title: Polyamines containing acid groups
IPC: C08G73/00
Filed: 1972-11-13
Abstract: 1373319 Paper BAYER AG 13 Nov 1972 [12 Nov 1971] 52323/72 Heading D2B [Also in Division C3] In the manufacture of paper there are used water-soluble polyamines having average molecular weights above 1,000 and containing at least one acid group of formula -R-COOM or of formula -R-SO 3 M where M is hydrogen or another cation, bonded to a basic nitrogen atom, where R is an alkylene radical having 1 to 7 carbon atoms which is optionally substituted or interrupted by a carbonamido group. They are obtained either (i) by reacting low molecular weight polyamines with compounds which introduce the acid groups and then with compounds which are polyfunctional towards amino groups, or (ii) by reacting high molecular weight polyamines having amine equivalents of 43 to 700, in which a hydrogen atom is bonded to at least every twentieth basic nitrogen atom, with compounds which introduce the acid groups and optionally with compounds which are polyfunctional towards amino groups. In examples polyamide-polyamines prepared from diethylene-triamine, adipic acid and #-caprolactam are reacted with sodium chloroacetate to introduce acid groups and then with epichlorhydrin and 1, 2-dichloroethane to increase the molecular weights; similar polyamide-polyamines are first reacted with epichlorhydrin to increase the molecular weights and then acid groups are introduced by reaction with sodium chloroacetate, sodium 2-acrylamido-2, 2-dimethyl-ethane sulphonate, sodium acrylate, itaconic acid, sodium vinylsulphonate, propanesultone and maleic acid; polyamines prepared from tetraethylene pentamine and dichloroethane and diethylenetriamine and epichlorhydrin, are reacted with acrylic acid and sodium chloroacetate; a polyethyleneimine is reacted with sodium chloroacetate; and bis-(3-aminopropyl)-methylamine is first reacted with sodium vinylsulphonate and then with epichlorhydrin; the polyamines so prepared are then used in paper-making processes.
Patent GB-1464725-A (GB)
Title: Spring brake units
IPC: B60T17/08
Filed: 1974-11-11
Abstract: 1464725 Spring brake units; diaphragm pistons CLAYTON DEWANDRE CO Ltd 11 Nov 1974 [12 Nov 1973] 52442/73 Headings F2F and F2T A spring brake unit 2 comprises a cylindrical housing 12 and a piston 5 connected with a vehicle brake and movable within the housing 12 under the action of a spring 9 located in a spring chamber 24 between the piston 5 and a detachable housing end wall 18, to apply the brake upon reduction or failure of supply of pressure fluid to a chamber 8, wherein either or both of the housing 12 and the detachable end wall 18 are so formed as to define one or more drainage ports for the drainage of moisture from spring chamber 24, the joint between the housing 12 and the end wall 18 being embraced by a flexible annular gaiter 22 into which the port or ports open and which includes a drain outlet. As shown, a rim 17 of wall 18 is retained within a rim portion 14 of housing 12 by a spring circlip 20 received in an annular groove formed in the wall of housing 12. The rim portion 14 is formed with a series of eight, axially extending slots 16 to define the drainage ports. The gaiter 22 which is of synthetic or natural rubber or a synthetic plastics material provided at its lowest point with a downwardly extending drainage channel 26 defining the drain outlet. A resilient flap 28, integral with the gaiter 22, is provided which yields to permit drainage moisture to escape, but which normally closes the channel 26 to prevent the entry of dust into the unit 2. As illustrated, the unit 2 is combined with a fluid pressure-actuated brake motor 4.
Patent GB-1364728-A (GB)
Title: Launching tube for a missile
IPC: F41A1/10
Filed: 1971-11-12
Abstract: 1364728 Launching tube MESSERSCHMITT - BOLKOW - BLOHM GmbH 12 Nov 1971 [13 Nov 1970] 52704/71 Heading F3C A missile 6, Fig. 1, is mounted in a ring 9 which is slidable in a tube 1. A combustion chamber 10 is formed between a portion of the tube 1, an end wall 4 and a piston 8 which is located within the tube. A propulsive charge 7, having a primer 11, is positioned in the chamber 10 and, when ignited, forces the piston 8 towards the open (front) end 3 of the tube. The missile 6 is projected therefrom and both the piston 8 and the ring 9 are arrested by a stop 5. Thus the chamber 10 remains gas-tight so that flash is obscured and sound is reduced. In other embodiments the piston is omitted and a diaphragm is attached to the open (front) end of the tube and extends therein; the diaphragm may be replaced by two pistons, one of which engages the missile and the other engages a high-density shock-absorbing filling which may be ejected; the propulsive charge may be located within bellows or the chamber may be supplied with pressurized gas from an external source, which chamber is formed between two diaphragms, one attached to the open (front) end of a tube and the other to the open (rear) end of the tube.
Patent GB-1463983-A (GB)
Title: Laser doppler velocimeter
IPC: G01S13/58
Filed: 1973-11-13
Abstract: 1463983 Laser doppler velocimetry NATIONAL RESEARCH DEVELOPMENT CORP 13 Nov 1974 [13 Nov 1973] 52708/73 Heading H4D The velocity of gas flow, e.g. in a wind tunnel 9 which may be turbulent is measured using laser doppler velocimetry and includes splitting a laser beam 2 into two convergent beams 4, 5 by prisms 3 which beams are made to converge by lens or prisms 7 to intersect at the area 8 in which measurement takes place thereby forming interference fringes 13 see Fig. 2; radiation reflected from particles passing through the fringes being detected and processed using the method described in Specification 1,450,911 at 10. The phase of one or both beams is varied to cause movement of the fringes, in phase shifter 6. The phase of both beams may be varied in opposite senses or the phase of one beam only may be varied from zero towards 2# radians by a sawtooth waveform applied to electrodes of the ammonium dihydrogen phosphate crystal arrangement Fig. 3 comprising two attached crystals 14, 15, having end faces 16, 17 coated in staggered fashion with reflective layers 18, 19 respectively to enable a beam to make three transits through the crystal as shown. In Fig. 3 the crystals are cut to produce output beams phased in opposite senses. The sawtooth waveform produces an effect of continuously advancing fringes in area 8 (see Figs. 4, 5, not shown) the moving fringe pattern enhancing measurement in turbulent flow. In the embodiment of Fig. 7 (not shown) two detached crystals are used in the phase shifter. In the Fig. 8 (not shown) embodiment the converging optics 7 are dispensed with and the detached crystals are disposed in a converging configuration. In the Fig. 9 embodiment (not shown), the phase shifter operates on one beam only. In the embodiment of Figs. 10 and 11 (not shown), in the phase detector, one movable beam (26) is directed through a glass block (27) for optical path compensation the other fixed beam (26) passing through an ADP phase shifting crystal (29). In the Fig. 12 embodiment (not shown) one beam of laser light enters the ADP phase modulator (56) plane polarized at 45 degrees, the orientation of the ADP crystal being such that the vertical beam component is advanced in phase and the horizontal beam is retarded in phase. These components are split in a polarized beam splitter (58) the horizontally polarized beam being converted to vertically polarized in a half wave plate and the beams made to converge as described. Instead of electro-optic crystals, magneto-optic crystals (Y1G) may be used. The laser light may be infra-red, visible or ultraviolet.
Patent GB-1498720-A (GB)
Title: Proportioning valve
IPC: B60T11/34
Filed: 1975-12-24
Abstract: 1498720 Proportioning valves; valves NISSAN MOTOR CO Ltd 24 Dec 1975 [25 Dec 1974] 52859/75 Headings F2F and F2V A proportioning valve comprises a differential area piston 54 responsive to the fluid pressures in an inlet chamber 62 and an outlet chamber 64 and including at least one part 68 which is slidable in and co-operates with a hollow sleeve 70 to form a sleeve valve in a passage 68, 66, 72 between the inlet to and outlet chambers. The sleeve 70 may include parts 74 (Fig. 1) or be without them (Fig. 4, not shown). The parts may be shaped as in Figs. 3a, 3b. A further chamber 40 may be provided (Fig. 1) above the piston 54 and connected to a front brake line 26 of a vehicle. In use the valve closes when the pressure in the chambers 40 and 64 acting on the piston exceed the upward force of spring 76 and the pressure in the chamber 62 acting on the piston, any subsequent increase in the braking pressure at inlet 14 causing a lower increase in the outlet pressure. Should the front brake pressure acting in the chamber 40 fail or be reduced the valve becomes effective at an increased rear brake pressure.
Patent GB-1105040-A (GB)
Title: Extruder for plastics materials
IPC: B29C48/49
Filed: 1965-12-15
Abstract: 1,105,040. Multi-screw extruders. F. PRANDI, and G. P PRANDI; 15 Dec., 1965 [30 Sept., 1965], No. 53140/65. Heading B5A. An extrusion moulding machine comprises a plurality of screws 4 individually housed in barrels 5 arranged around a common axis, the screws being fed from a common hopper 2, see also Fig.: 2 (not reproduced), and discharging into and through a common outlet 6. A motor (not shown) which drives the screws may be connected selectively to one or more screws by friction clutches, mechanical or electromagnetic, but is preferably connected by a gear coupling. Each screw 4 may be axially extended by a chuck (4<SP>1</SP>), Fig. 4 (not shown), which is driven via a sleeve (5) and gears (11, 12) when an axially movable gear (17) on chuck (4<SP>1</SP>) is engaged with a gear (16) on sleeve (5). In a modification, Fig. 5 (not shown), a speed changer (18) is added which has an output shaft (21) selectively connectible to chuck (4<SP>1</SP>). The outputs from barrels 5, Fig. 1, may be combined in an extrusion nozzle attachable to outlet 6, see also Fig. 3 (not reproduced), and a multi-coloured product may be formed by using this head and suitably subdividing the feed zone of the screws.
Patent GB-1202578-A (GB)
Title: Improvements in or relating to adsorption processes
IPC: C01B31/08
Filed: 1967-11-22
Abstract: 1,202,578. Regenerating adsorption cokes. BERGWERKSVERBAND G.m.b.H. 22 Nov., 1967 [10 Dec., 1966], No. 53247/67. Heading CIA. Adsorption cokes containing H 2 SO 4  are regenerated by first washing to remove the H 2 SO 4 , for example, with hot water and then subjecting the coke to a heat treatment in an inert atmosphere at 400‹ C. or above, preferably from 600‹ to 1000‹ C., generally for 5 minutes to 5 hours. The regeneration can be speeded up by a simultaneous circulation of the inert gas. If the heat treatment is carried out at 400‹ to 600‹ C., then preferably after the washing step, sodium or potassium hydroxide is applied to the still wet adsorption coke. Suitable cokes are commercial active charcoals, cokes from peat, soft coals, hard coals and oxidized hard coals pretreated with air at 200‹ to 300‹ C.
Patent GB-1073600-A (GB)
Title: Improvements in or relating to piezo-electric devices comprising first and second piezo-electric elements
IPC: H03H9/05
Filed: 1965-12-21
Abstract: 1,073,600. Piezoelectric element mountings. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Dec. 21, 1965 [Dec. 24, 1964], No. 54083/65. Heading H1E. A piezo-electric device, e.g. a filter, comprises two elements, e.g. thickness-shear, quartz resonators 1, 3, arranged in a common mount, the mount comprising two resilient, forked supports 9, 11 each having a pair of prongs 17, 19, respectively, each pair of prongs having slots 21 or 23 which accommodate the edge of a different one of the two elements. The elements may also be supported by a further forked support 43. The forks are mounted upon conductive pins 13, 15, 45 and are connected by conductive cement to electrode extensions 33, 35, 37, 39 on the elements 1, 3. The pins extend through the metal-rimmed, glass base 5, 7 of a sealable container.
Patent GB-1247093-A (GB)
Title: Improvements in and relating to rotary volumetric flow meters for liquids
IPC: G01F3/08
Filed: 1969-11-06
Abstract: 1,247,093. 093. Rotary liquid flowmeters. SIEMENS A.G. Nov.6, 1969 [Nov.7, 1968], No.54385/69. Heading F1F. A rotary liquid flowmeter comprising a slotter cylindrical piston 7, Fig.2, eccentrically mounted in a cylindrical housing 4 for movement in a plane perpendicular to the housing axis 17 in a circular path whose centre is concentric with this axis to meter flow between inlet and outlet ports 5a, 5b, divided from one another by a radial guide wall 19 located in a piston slot 22a includes means whereby the piston is displaced from a "deadcentre" position in the housing. As shown, two pistons 7, 25, Fig.1, are offset 180 degrees with respect to each other and inter-connected by a common shaft 34 so that when one piston approaches its "dead-centre" position the other piston moves it past this position. A pin 33 on which the piston 25 is eccentrically mounted is connected by a drive wheel 37 and a magnetic coupling, one half 38 shown, to a counting device. An inlet 5 opens into a supply passage 9 which communicates through inlet ports 11, 29 which both piston chambers and outlet ports from the two chambers communicate with a common outlet. Apertures in which the pins 14, 33 are received are large enough to permit leakage from one side of a piston to its other side to balance the piston. The "means" to displace the piston from its "deadcentre" position may instead of the second piston by a magnet or the piston may be weights to shift its centre of gravity.
Patent GB-1436364-A (GB)
Title: Equal probability selection circuit
IPC: B65H3/44
Filed: 1973-11-23
Abstract: 1436364 Random number selection D W FRIEDMAN 23 Nov 1973 [29 Nov 1972] 54589/73 Heading G4D In a random number selecting arrangement such as for use in a bingo game and of the type in which the numbers are scanned rapidly in succession until a stop signal is produced manually to select a number, means is provided to allow individual numbers, e.g. those previously selected, to be rendered non-selectable and the scanning is provided by a two speed clock whereby groups of adjacent selectable numbers in the succession are scanned at a relatively low speed (e.g. 1 kHz) while groups of non-selectable numbers are scanned at a higher speed (e.g. 160 kHz). Each number has a switch S 1 , S 2  . . . S 66  . . . &c. which when closed makes the number selectable. The switches are arranged in a matrix and are scanned in sequence by two co-ordinate selectors X, Y each of which comprises a counter B, a decoder D and individual transistors TR; when a switch S 66  is selected current flows from B + through a first lamp DS 1 , a first transistor TR 1 , the switch S 66  and an associated diode D 66 , a second transistor TR 19 , a second lamp DS 19  and a resistor R 21  to ground; the two lamps indicate the selected switch while the signal across R 21  indicates that a selectable switch has been selected. The selectors X, Y are stepped by pulses applied at terminal 13 either from a low frequency source A or a high frequency source B through a selecting circuit 15, 16, 17. To initiate a new random selection switch SSW is closed; nothing happens while the signal from R 21  persists, i.e. until the previously selected switch is opened. Then the low speed source is connected to 13 to step the selectors X, Y. If after the first step no signal re-appears on R 21  then terminal 13 is switched to the high speed source and the switches are scanned at high speed until a closed switch is reached and the scanning speed is reduced. Scanning continues until a short time after switch SSW is opened; the next closed switch then is the new selection.
Patent GB-1149207-A (GB)
Title: Intermittent or cyclically variable driving mechanism
Inventor: HUBBARD KENNETH GEORGE
IPC: F16H35/02
Filed: 1966-12-08
Abstract: 1,149,207. Toothed gearing. VAUGHAN RENAULT MACHINE TOOLS Ltd. 10 Nov., 1967 [8 Dec., 1966], No. 54912/66. Heading F2Q. An intermittent or cyclically variable ratio drive mechanism comprises coaxial input and output shafts 12, 21, gear-wheels 16, 18 secured on a layshaft 17 respectively meshing gearwheels 15, 19 on the input and output shafts respectively, the layshaft being rotatably mounted in a carrier 25 angularly movable about the axis of the shafts 12, 21, and a crankpin 29 on the layshaft rotatably engaging an arm 31 having a fixed pivot 32 in the gear casing 10. As the input shaft 12 is continuously rotated by an electric motor 14 the rotation of the crank-pin 29 with layshaft 17 causes the carrier 25 to rock back and forth to cyclically vary the velocity ratio of the drive, and hence the angular velocity of the output shaft 21. If the crank-pin 29 lies on the pitch circle of the gear 18 the output shaft will stop momentarily at regular intervals. A disc 28 carrying the crank-pin 29 may have holes at various radii to receive the crank-pin, so that the output motion may be adjusted.
Patent GB-1137130-A (GB)
Title: Plating of metal surfaces
Inventor: SAUBESTRE EDWARD BASIL
IPC: C25D5/44
Filed: 1965-12-30
Abstract: 1,137,130. Coating with metals; electro-plating with copper. PERNIX ENTHONE. Dec. 30, 1965, No.55234/65. Headings C7B and C7F. A zincating bath for coating aluminium and its alloys prior to electro-plating in a pyrophosphate copper bath comprises a dilute aqueous solution of a zinc salt an alkali metal hydroxide, a chelating agent for chelating bath aluminium and zinc comprising (a) 5% - 95% of a chelating agent with a log K, (zinc) constant of 4À5 to 18 and (6) 95% - 5% of a chelating agent with a log K, (zinc) constant of 1À5- to 4, and a copper salt in an amount equivalent to 0À4 - 0À85% copper ions based on the total solute content of the solutions. The chelating agents (a) are monoamines, polyamines and their salts, # diketones, α-hydroxy aryl compounds and alizarin its derivatives and salts. The chelating agents (6) are α hydroxy carboxylic acids and their salts, dicarboxylic acids and their salts, α- and #- keto carboxylic acids and their salts and α hydroxy alcohols. The total solute content of the solution is preferably 60 - 180g/ l, the immersion time 5 secs to 2 minutes and the solution temperature 45‹ - 200‹ F. A suitable solution contains in parts by weight per 100 parts by weight total solute, 60-85 parts alkali metal hydroxide 5À5-12 parts based on zinc of zinc oxide or sulphate 5-20 parts chelating agents. 0À4-0À85 parts Cu ions (added as copper sulphate), The weight ratio of OH/Zn is from 2À1 to 1 to 7À9 to 1. Prior to treating the zincating solution the aluminium is etched, rinsed, treated in a aqueous solution of HNO 3  and H 2 SO 4  and rinsed. An example is given of the pyrophosphate plating bath: Copper ion 22 - 38 g/l Pyrophosphate ion 150-250 g/l Nitrate ion 5-10 g/l Ammonia 1-3 g/l pH 8À2-8À8 Ratio P 2 O 7 <SP>-4</SP>/Cu 7À0-8À0 Temperature 50‹ -60‹ C.