baber/WOPTO huggingface dataset:
Patent GB-1291333-A (GB)
Title: Control apparatus for a.d.c. brushless motor
IPC: H02P6/28
Filed: 1970-11-25
Abstract: 1291333 Automatic control of speed TOKYO SHIBAURA ELECTRIC CO Ltd 25 Nov 1970 [25 Nov 1969] 56070/70 Heading G3R [Also in Division H2] To prevent damage due to short circuiting the supply during commutation of a thyristor inverter 11 when starting a D.C. brushless motor 10, the inverter is supplied from a controlled rectifier 12 which, when the speed is below a predetermined value, operates periodically as an inverter during commutation of the inverter 11 to return energy from the motor inductance and inductor 13 back to an A.C. supply 14. When the speed is above this value the rectifier continuously supplies D.C. to the inverter. The inverter 11 is commutated at zero phase angle to provide maximum torque when the speed is below the predetermined value. The speed is measured by a tacho-generator 17 connected to a device 30 which produces an output when the speed is below the set value. One output of 30 is connected to an AND gate 32 whose other input is from a rotor position detector 26. Pulses from 26 effect commutation of the inverter 11, and when these pulses occur the output of AND gate 32 triggers a monostable multivibrator 33 which, for the duration of its pulse (70), Fig.2 (not shown), causes rectifier 12 to perform its inverter function. A second output of device 30 operates a change over device 31 which, via logic circuit 27, causes inverter gate control device 28 to gate at zero phase angle. During normal running there is no output from 30, the tacho-generator output is compared with a speed reference 15, the difference controlling the gating of rectifier 12, (now functioning only to supply D.C.) to keep the motor speed constant. Current is limited to a maximum value by a loop 24, 25, 21.
Patent GB-1279819-A (GB)
Title: Improvements in and relating to character recognition
Inventor: KULCKE WERNER
IPC: G06V10/88
Filed: 1969-11-18
Abstract: 1279819 Character recognition INTERNATIONAL BUSINESS MACHINES CORP 18 Nov 1969 [20 Nov 1968] 56310/69 Heading G4R [Also in Division G2] Characters arranged in predetermined positions on a record carrier are recognized by imaging the record carrier through each of a series of holographic filters in turn on to a matrix of photo-cells arranged in positions corresponding to the predetermined positions, and generating in response to detection by a photo-cell of light passed by such a filter a signal indicative of the character to which that filter corresponds. The holographic filters are arranged in series on a film strip and are passed in turn through the optical system. Each character on the record carrier produces a spot of light on a photo-cell having a position corresponding to that of the character on the record carrier, when the matching filter is in position. Each illuminated photocell gates a character-identifying code into a storage location respective to the character position in a store. A given filter can be produced by passing coherent monochromatic laser light to a fully-reflecting mirror to produce a parallel beam and through a lens to a semipermeable mirror to produce a convergent beam. The parallel beam passes through the semipermeable mirror, and the two beams, which are concentric, illuminate a mask having a charactershaped transmitting portion and a central spot aperture to which the convergent beam converges. The light passing through the mask passes to the film via a Fourier-transforming lens. Alternatively, the spot aperture could be outside the character so that, during recognition, the zero-order diffraction image of the record carrier will not be superposed on the first-order image of the spot on the photo-cell. A plurality of filters could be superposed, each producing a spot on a respective photo-cell or respective combination of photo-cells on recognition "match", or a plurality of filters could be arranged side-by-side on the film strip, being inserted into the light path in turn by a rotating mirror or prism. To differentiate between similar characters, filters may comprise two or more superposed holograms associated with common contours of the similar characters and significant feature(s) of one of the characters, respectively, having low and high scattering intensity respectively.
Patent GB-1236036-A (GB)
Title: Method for preserving dilute sugar solutions
IPC: C13B10/00
Filed: 1968-11-28
Abstract: 1,236,036. Preserving dilute sugarcontaining solutions. F. & M. SCHAEFER BREWING CO. and WASHING CHEMICAL CORP. 28 Nov., 1968 [13 Dec., 1967], No. 56629/68. Heading A2D. "Sweet water" solutions containing from 1 to 50% by weight of fermentable sugar are preserved against loss of sugar values due to microbial growth, by admixing therewith from 5 to 50 parts per million of n-heptyl p-hydroxybenzoic acid or an alkali metal or alkaline earth salt thereof.
Patent GB-1406059-A (GB)
Title: Support means
IPC: B25B11/00
Filed: 1972-12-11
Abstract: 1406059 Suction holding appliances AIRFLEX CONTAINERS Ltd and C D D HICKLEY 10 Dec 1973 [11 Dec 1972] 57059/72 Heading B8H [Also in Divisions B7 and F1] A suction holding appliance for use, e.g. as a load support surface on a road vehicle, ship or aircraft retains the load thereon by a suction force applied to the load in dependance of its weight. The surface comprises a vacuum chamber 12, connected to a vacuum source, not shown, a resilient pad secured to the chamber and a series of holes 13 extending through the pad and a wall 10 of the chamber. A plug 14 is located in each hole and has a flange 17 at its lower end to retain the plug within the pad 11 and to form a seal therewith in the unloaded condition of the support surface. A series of radial holes 18 are disposed near the lower end of the plug and communicate with longitudinal bores 20 extending to a suction surface 15 whereat they are interconnected by grooves 21. In use, when an article is placed on the surface the plugs are depressed into the vacuum chamber by an amount dependant on the weight of the load whereby a certain number of the holes 18 are brought into communication with the chamber to create a suction force at the surface dependant on the weight of the load. When the appliance is used in an aircraft the vacuum chamber may be connectable to the outside of the aircraft so that after take-off of the aircraft the suction can be supplied by the low pressure atmosphere outside the aircraft.
Patent GB-1378339-A (GB)
Title: Method of encapsulation by coacervation
IPC: B01J13/10
Filed: 1972-12-12
Abstract: 1378339 Encapsulating reactive materials SOC NATIONALE DES POUDRES ET EXPLOSIFS 12 Dec 1972 [28 Dec 1971] 57319/72 Heading B8C Fine particles, especially of reactive substances such as alkali metals and powerful reducing agents, are microencapsulated by dispersing the particles in a solution of a polyurethane resin in a solvent or solvent mixture, adding further solvent or a constituent thereof to cause coacervation of the resin and encapsulation of the particles, dispersing the reaction mixture in a (slightly polar) liquid which is immiscible therewith, which acts to prevent clumping of the encapsulated particles, and which contains cross-linking agent for the resin, separating the microcapsules and drying them. In examples, lithium hydride, lithium and lithium aluminium hydride are encapsulated in various polyurethane resins which initially are dissolved in methylene chloride/chloroform and caused to coacervate by adding further methylene chloride. In each case, the cross-linking agent is toluene diisocyanate dissolved in trifluorotrichloroethane.
Patent GB-1404810-A (GB)
Title: Electrical assembly
IPC: H02B1/044
Filed: 1972-12-13
Abstract: 1404810 Component assemblies; retractive switches INVENTIO AG 13 Dec 1972 [14 Dec 1971] 57454/72 Headings H1R and H1N An electrical assembly comprises an elongate U-shaped housing of, e.g. metal or synthetic plastic with side limbs 1À1 and 1.2 and unitary connecting member 1.3 forming a first plate with projecting edges; the housing being inserted in an aperture of a main assemby 17. Electrical sub-assemblies 2, 3, 4, 5, 6, 7 are pushed into the housing from the rear to rest on sidewalls 1.1, 1.2 retained by spring 8 notching into interior grooves 9. Sub-assembly 2 is a printed circuit 2.1 with a luminous pushbutton switch 10, contact carriers 11, and screwless connecting terminals 12 therein; the switch button protruding through an opening of the front plate and being translucent to the light of indicator lamp 10.2; the components being interconnected over the printed circuit paths and switch bridge 10.3 being engageable with contacts 13 after disengagement with contacts 11. Sub-assembly 3 is a printed circuit 3.1 with indicator lamp 14 and reflector 15 visible through translucent cover 16 and interconnected over the printed circuit paths with sorewless terminals 12. The sub-assemblies 4, 5, 6, 7 comprise assemblies of, e.g. resistors, diodes, transistors (not shown) interconnected with screwless terminals 12; the latter being interconnected at will by plug in jumpers (not shown). The complete assembly may constitute a lift floor indicator inserted in a wall or door post, and may be protected by a hood pushed on from the rear.
Patent GB-1282689-A (GB)
Title: A device for monitoring a linear voltage differential transformer
IPC: G01R31/50
Filed: 1970-12-03
Abstract: 1282689 Protective arrangements BENDIX CORP 3 Dec 1970 [11 Dec 1969] 57491/70 Heading H2K A fault indicating arrangement for a linear voltage differential transformer 1 having a movable core or armature 20 and providing two A.C. voltages E 7 , E 8  to a control system, comprises means 35, 36, 40, 39 for providing a direct voltage corresponding to the sum of the voltages E 7 , E 8 , means for providing a reference direct voltage E 10  of opposite polarity to initially balance the first mentioned direct voltage and means 48, 60 responsive to unbalance between the direct voltages to provide an indication. In the arrangement shown, the resultant of the direct signals together with a square wave alternating voltage E 12  are applied to an amplifier 48 and an indicator 60 which is unable to respond to the normal A.C. output of the amplifier. In the event of a fault causing either direct voltage to increase or fail the resultant D.C. signal swamps the alternating voltage, so that the amplifier 48 provides a D.C. output to operate the indicator 60.
Patent GB-1413140-A (GB)
Title: Olefinic
IPC: C07D409/06
Filed: 1972-12-15
Abstract: 1413140 Pharmaceutical aerosol compositions RICHARDSON-MERRELL Inc 15 Dec 1972 [28 Jan 1972] 57997/72 Heading C4X [Also in Division C2] Pharmaceutical compositions in the form of aerosols comprise a compound I in which R and R<SP>1</SP> are H or together form a second bond, n is 1-3, Y is -CH=CH- or -CO-, provided that when R and R<SP>1</SP> are H, then Y is -CH = CH- and n is 1 or 2 ; and Z is thienyl or phenyl optionally substituted by 1-4C alkyl, 1-4C alkoxy, halo, di(1-4C alkyl)amino or a saturated monocyclic heterocyclic ring; and a gaseous or liquefied propellant such as Cl 2 CF 2 , optionally mixed with C 2 H 2 Cl 2 F 2 , together with any co-solvents or wetting agents as may be necessary.
Patent GB-1336945-A (GB)
Title: Device for accurately measuring the position of a distant object
IPC: F41G7/30
Filed: 1971-12-21
Abstract: 1336945 Tracking system SOC D'ETUDES ET DE REALISATIONS ELECTRONIQUES 21 Dec 1971 [24 Dec 1970] 59419/71 Addition to 1325162, Heading H4D In a missile tracker of the type described in Specification 1,325,162 wherein a field of view containing the missile and a boresight indication is successively vertically and then horizontally raster scanned to give the x and y coordinate deviations from the boresight in terms of number of vertical and horizontal scan lines respectively, the angular extent of the field of view, or the solid angle subtended by the raster scan is progressively reduced as the missile nears the boresight. This ensures that the x and y deviations become obtainable with the necessary greater accuracy. The change of field of view can be obtained by a zoom lens 2 under the control of missile distance and type unit 36a, whilst the change of area of the raster scan is obtained by modulating the amplitudes of the outputs of sweep waveform generators 11 and 12 with the appropriate X and Y deviations Ex, Ey, via 37a 37b, switch 38. A two stage amplitude control of the image disectors (1) output ensures that said output remains at a constant level irrespective of lighting conditions. A first, fast acting but small range, control is an A.G.C. connection from amplifier 20's output to control unit 22 and multiplier 23. A second, slow but large range control is by rotating a variable density filter in front of the target of the image disector tube. The switch over from vertical to horizontal scan is by switch 17 between the scan coils 7 and 8 and the line generator 11 and frame generator 12. To enable the tracker to track on the centre of the missile, a count N x  (or Ny) is taken of the number of lines from the last line to intercept the missile's image, to the end of the frame, also a count X (or Y) of the number of lines intercepting the missile's image. The distance of the centre of the missile's image from the centre of the field of view is calculated from where 2L is the number of lines in a frame. To carry this computation out, the count L is preset into the counters, the counts N sent via switches 28a, 28b and the counts X/2, Y/2 sent via switches 29a, 29b.
Patent GB-595358-A (GB)
Abstract: 595,358. Variable-speed gearing. WARREN, R. May 8, 1944, No. 8656. [Class 80(ii)] A variable-speed gear comprises a helical gear 24, Fig. 2, on a driven shaft 25, meshing with helical gears 23 splined to shafts 22 carried by a cage 21 fixed to the driving shaft 20. The shafts 22 are connected to the cage 21 by ratchet or like clutches 36. Each gear 23 is connected by a forked sleeve 33 slidable on a rod 34 and by links 26, 32, to a swashplate 30. Thus, as the driving shaft rotates, the shaft 25 is driven at a speed which varies according to the angular position of the swashplate 30. The gears 23 may be mounted on sleeves on the shafts 22. In a modification the shafts 22 carry planet pinions meshing with a fixed sun gear the ratchet clutches being positioned between the shafts and the planet pinions. In another modification the helical gear 24 is fixed and a sun gear on the driven shaft meshes with planet pinions on the shafts 22. In a non-epicyclic arrangement, each countershaft 93, Fig. 6, carries a pair of oppositely inclined helical gears 75, 76, interconnected by a one-way clutch 77. Gear 75 meshes a helical gear 78 fixed to the gear casing 80 and gear 76 meshes a helical gear 79 fixed to the driven shaft 62. The driving shaft 82 has a swashplate 84 the inclination of which can be adjusted by a control rod 91, and the shafts 93 under the action of springs 96 bear against the swashplate by slipper pads 95. A similar variable-speed gear embodies the swashplate mechanism of Specification 595,394.
Patent GB-1196220-A (GB)
Title: Improvements in or relating to Centrifugal Governors
IPC: F02D1/16
Filed: 1968-12-20
Abstract: 1,196,220. Speed governors. ROBERT BOSCH G.m.b.H. Dec.20, 1968 [Jan.18, 1968], No.60635/68. Heading G3B. A centrifugal governor comprises a coupling 12 secured on a shaft 13 by a nut 13<SP>1</SP>, and a cupshaped part 1 secured to a second shaft by a flange 1a having an axial opening 2 for access to the nut, which is to prevent egress of oil from the interior of the governor by a sleeve 18 of elastic material, e.g. rubber, arranged coaxially on the coupling 12, by means of an inwardly directed flange 18a locating in a groove 12b, and having a sealing lip 18b sliding in a sealing manner on the inside of the part 1. The coupling 12 carries fins 14a, 14b which are maintained in contact with rollers 11 on weights 8 by springs 15 that are pivoted with the weights on pins 7 mounted on the part 1, so that as the weights move outwards, the fins are adjusted in a clockwise manner to vary the relative positions of the two shafts. A seal 16 is arranged between the coupling 12 and a cover ring 4. The sleeve can be stiffened by a metallic liner (19), Fig.3 (not shown).
Patent GB-2028164-A (GB)
Title: Device for introducing samples into analyzer of apparatus for granulometric analysis of particles contained in fluids
IPC: B01L3/00
Filed: 1978-08-22
Abstract: A device for feeding a liquid sample into apparatus for granulometric analysis of the particles in the liquid comprises a downwardly tapering funnel 1 opening at its lower end into channel having a horizontal flow cross-section 5 followed by a vertical flow section 6. The horizontal flow section has a length 3-5 times its diameter and the vertical flow section has a diameter which, in its upper zone, progressively increases from an initial value to between 4-6 times that value then progressively diminishes back to its initial value. The horizontal section hold particles which precipitate out of a sample during a settling time when bubbles escape prior to analysis. The vertical section produces eddies which break- up clumps of coalesced particles from the horizontal section and distributes these uniformly in the liquid while analysis is being carried out. <IMAGE>
Patent GB-2017529-A (GB)
Title: Apparatus for separating substances from fluids
IPC: B01D29/33
Filed: 1979-02-20
Abstract: Apparatus for separating substances from fluids, e.g. dust from atmospheric air, comprises a plurality of self supporting, moisture resistant, box shaped filter elements 5 which are inserted drawer like on slides 11 into the housing 1. The elements are preferably formed from a foam structured porous material produced by sintering, eg polyethylene. Stiffeners 13 can be provided within the elements, or the walls of the elements can be corrugated to provide stiffening. Filtrate leaves the elements through openings 8 in the tops of the elements. The elements may be cleaned by being shaken by a mechanism 23 or by blowing clean air downwardly towards discharge well 4. <IMAGE>
Patent GB-2019018-A (GB)
Title: Measuring Device Particularly for Level-Luffing Jib Cranes
IPC: B66D1/58
Filed: 1979-04-10
Abstract: A measuring device incorporated in the reeving system of a jib crane comprises a pulley 16 mounted on a shaft, at least one end of the pulley shaft being supported by at least one pair of angularly-spaced linear force transducers 29, the combined outputs of the transducers being used to provide a signal representative of the resultant radial load applied to the pulley. The reading obtained may be used, for example, to provide an indication to the driver of the load on the crane hook; or as a warning of overload; or as an indication of the radius of the crane hook from the vertical centre line of the crane; or any combination of these. <IMAGE>
Patent GB-2053931-A (GB)
Title: Solubilizing cationic and anionic acrylamide copolymers
IPC: C08L33/02
Filed: 1979-07-02
Abstract: The solubility in water of dry granular copolymers of acrylamide and a copolymerized anionic or cationic comonomer is improved by incorporating dicyandiamide into the aqueous solution in which the monomers are polymerized.
Patent GB-2030238-A (GB)
Title: Seal assembly
IPC: E21B33/12
Filed: 1979-08-17
Abstract: A seal assembly for use between the pump body 14 and the pump housing 12 of a downhole hydraulically operated pump comprises a dovetail groove formed in the pump body and a seal element 26. At one end of the groove the inner portion only of the groove has a dovetail wall 56, the outer portion being defined by a divergent wall 58. A sealing lip 32 is formed at one end of the seal element by an undercut recess. The innerwall 28 of the seal element is cylindrical, and the outer wall 30, in the free condition of the seal, tapers outwardly from its lower end towards the lip to ensure easy fitting and good sealing contact with the pump housing 12. <IMAGE>
Patent GB-2059247-A (GB)
Title: Curing meat
IPC: A23L13/70
Filed: 1979-09-27
Abstract: Increased yields and meat content are obtained in pickled meat products, e.g. hams, tongues, brisket, silverside etc. by incorporating a water-soluble meat protein extract, preferably obtained from partially defatted animal tissue by solubilisation and spray drying, in the brine solution used during pickling, or added during tumbling and/or massaging.
Patent GB-2038399-A (GB)
Title: Electronic Lock and Key, and an Alarm System Incorporating Same
IPC: G08B13/00
Filed: 1979-10-01
Abstract: A key (26) comprises a resistor (R40) of a predetermined value which can be connected to a socket (S) of an electronic lock, where it forms a divider with a resistor (R29). A comparator (A2, A3) determines whether or not a resistor in a certain range around the predetermined value has been connected and provides a signal accordingly. This lock and key is used to arm and disarm an intruder alarm in which changes in signal from an ultrasonic transmitter (U1) to an ultrasonic receiver (U2) caused by the presence of an intruder are detected. <IMAGE>
Patent GB-2034611-A (GB)
Title: Valve casings for wedge valves
IPC: B23P15/00
Filed: 1979-10-30
Abstract: The invention relates to the manufacture of valve casings for wedge valves. According to the invention, a valve casing in the form of a hollow member closed at one end is produced from a hollow body made by the Erhardt method, which is mechanically finished both inside and out, the member is heated to its deformation temperature and flattened over a substantial portion of its length with an overall degree of deformation of at least 3. Openings can then be formed in the flattened portion for the attachment of connecting members. <IMAGE>
Patent GB-2046887-A (GB)
Title: Apparatus for repairing degassing device for molten metal
IPC: C21C7/10
Filed: 1980-03-05
Abstract: An apparatus for repairing a degassing device for molten metal, comprising a container (4) for a fluidized refractory material, a pipe (6) opening into said container for connecting the air space at the upper portion of said container with a compressed air source, a refractory material supply tube (9) connected at its one end to said container at an opening in the bottom portion of said container, a compressed air inlet (7) in said supply tube for mixing compressed air with said refractory material within said supply tube, a vertical pipe (10) connected at its lower end to the other end of said supply tube, a device (12) for moving said vertical pipe up and down along the axis thereof, and an assembly of an air motor (14) and an impeller (15) rotated by said air motor, said assembly being mounted on and at the top portion of said vertical pipe (10), said rotating impeller constituting a sprayer through which the refractory material fed through said vertical pipe from said container (4) is spread together with the previously mixed air horizontally outwardly toward the cylindrical inside wall (3) of the downwardly extending vertical discharge pipe of said degassing device to be repaired. <IMAGE>
Patent GB-2057966-A (GB)
Title: Heat-resistant belt for use in heat transfer printing
IPC: B41F17/00
Filed: 1980-06-20
Abstract: A heat resistant belt for use in heat transfer printing has a continuous foundation fabric 1 of aromatic polyamide fibres and a lap 2 mainly consisting of heat shrinkable aromatic polyamide fibres laid on each side of said foundation fabric, and felted on the endless foundation fabric by needle punching, the heat- shrinkable aromatic polyamide fibres having been shrunk by heat treatment. <IMAGE>
Patent GB-2051594-A (GB)
Title: A maker's emblem for mounting on a vehicle
IPC: B60R13/00
Filed: 1980-07-04
Abstract: An emblem to be mounted on a vehicle projecting from a surface thereof comprises an elastic reinforcing skeleton, for example of spring steel or carbon fibre, surrounded by a covering of an elastically yieldable softer, plastics material. In a radiator emblem, a point 4 of intended bending is provided in the region of its pedestal. The plastics material has a galvanic coating. <IMAGE>