baber/WOPTO huggingface dataset:
Patent GB-1090778-A (GB)
Title: Closed-circuit television network
Inventor: LIU YEE JING
IPC: H04N7/173
Filed: 1965-10-13
Abstract: 1,090,778. Closed circuit television systems. J. O. CAMPBELL. Oct. 13, 1965, No. 43428/65. Heading G4H. A number of receivers 11, 12, 13, 14 (Fig. 1) in a closed circuit television system are connected to a common line, each receiver having a programme selector (Fig. 2) which, when operated, links up the programme generator 10 to the appropriate receiver and supplies to the transmission line a signal characteristic of the receiver. In the form shown the programme selector comprises switching means 57, adapted to connect one of two resonant circuits 52, 53 to the television receiver, the circuits being arranged to resonate at the different carrier frequencies of the two pay TV programme signals transmitted over the line 19. The subscriber-programme identification signal generator 70 comprises an oscillator 71 generating a sine wave signal, the frequency of which is controlled by a shaft 73 according to the position of the switch 57. The signal is transmitted via filters to a signal recorder 26 (Fig. 1), playback mechanism 28, a wave analyser 29 and a frequency counter 30 to determine which receiver is switched on and which programme is being watched this information being recorded on punched cards or tape or being printed. The selector switch 60 may be positioned to connect the TV receiver to the TV antenna for receiving free television signals, a switch 75 being then opened so that no signals are sent back by the generator 70.
Patent GB-926424-A (GB)
Title: Absorbent product
IPC: A61F13/15
Filed: 1960-12-16
Abstract: In a modification of the apparatus of the parent Specification, the end tabs of sanitary napkins are folded longitudinally to result in a cross-section in the form of a flattened V or Z, by suitable shaping of the folding rollers.
Patent GB-1278660-A (GB)
Title: Alloy and welding wire for open-arc welding
Inventor: MEDOVAR BORIS IZRAILEVICH
IPC: C22C38/58
Filed: 1969-09-03
Abstract: 1278660 Oxide-containing alloy VSESOJUZNY NAUCHNO-ISSLEDOVATELSKY I PROETKNY INSTITUT TEKHNOLOGII KHIMICHESKOGO I NEFTYANOGO APPARATOSTRONENA 17 Sept 1970 [3 Sept 1969] 43529/69 Heading C7A An alloy, for making into an open-arc welding wire, comprises:- one or more {Rare earth metal oxide} 0À05-0À8% C 0.02-0.3% Cr 15-30% Mn 0À1-15% Ni 0À05-20% Si 0À1-2% Mo 0-7% Nb 0-3% Ti 0-2% and V 0-5% the balance, apart from impurities, being Fe.
Patent GB-1117136-A (GB)
Title: Adjustable chairs
IPC: A47C3/30
Filed: 1966-09-29
Abstract: 1,117,136. Adjustable seats. HANS SCHWARZKOPF. 29 Sept., 1966 [1 Oct., 1965], No. 43621/66. Heading A4J. [Also in Division B8] In a chair having a pedal operated hydraulic or pneumatic raising and lowering mechanism, in which depression of the pedal 11, beyond the range of its pump operating stroke a, opens a valve to lower the chair, a foot piece 14 has an extension, acting as a stop, to prevent the pedal from being inadvertently moved into the valve opening position. To open the valve, the operator's foot is transferred to bar 12, which is free independently to slide downwardly, along the stem 13, of the stationary foot piece 14.
Patent GB-1276195-A (GB)
Title: Apparatus for deriving clock signals from a digital data pulse train
Inventor: PIERRET JEAN MARC
IPC: H04L7/02
Filed: 1969-09-04
Abstract: 1276195 Digital data transmission systems INTERNATIONAL BUSINESS MACHINES CORP 4 Sept 1969 [4 Sept 1968] 43758/69 Heading H4P A receiver for deriving clock pulses from a digital data pulse train in which each data item is coded as a main pulse preceded and followed by echo pulses is described. This is for use in a data transmission system as described in Specifications 1,154,648 and 1,271,753. The clock pulses produced are used to modify the timing of sampling clock pulses used on the train via lines 51, 61 and to maintain synchronism with the incoming pulse train. In the embodiment of Fig. 2 the main pulses can have any one of six possible amplitude relationships, taking magnitude and sign into account, with a pulse train element separated therefrom by a predetermined time T/2. The present receiver detects that two pulses have the correct time relationship T/2, one of the correct amplitude relationships listed on Fig. 2 (bottom right hand corner) and that the amplitudes are those unique to main pulses. The pulse train enters a comparator 21 having a first time delay 25 and a second time delay 30 of T/2 which is the predetermined time relationship. Two pulses, normally separated by time T/2 go to six comparison circuits, adders 33 to 38, each of which tests for one amplitude relationship, i.e. circuit 33 tests that pulses A and B have the relationship AB < 0, 1A1 = 1B1, and if so enables an appropriate AND gate 40 to 45. The other inputs of the AND gates are fed by an appropriate output from a conditioning unit 22, which latter also receives the pulse train. The pulse train is sampled by clock pulses 51, 61, whose accuracy is only approximate and an output is produced on one only of lines 1 to 6 which indicates that at least one of the pulses has one of the desired amplitudes and also the desired time relationship. The two inputs of circuits 40 to 45 arrive in synchronism and the output of OR gate 48 forms clock pulses which are used to modify the clock pulses 51, 61. In another embodiment (Fig. 3, not shown) the conditioning circuit generates two conditioning signals and the circuitry is modified for use with a different number of possible amplitude relationships.
Patent GB-1277512-A (GB)
Title: Improvements in or relating to optical wave guides
Inventor: KAISER PETER
IPC: G02B3/12
Filed: 1969-09-04
Abstract: 1277512 Gas lenses WESTERN ELECTRIC CO Inc 4 Sept 1969 [11 Sept 1968] 43878/69 Heading G2J An optical waveguide incorporating gas lenses comprises a series of spaced gas inlet, exhaust, and heating, arrangements as shown. Any inlet, such as 22 with its porous tube 30, produces gas flow both in and against the direction of light travel so that any exhaust such as 32 extracts gas from two directions at once, the gas extraction being effected radially and symmetrically over the periphery at a cross-section at an exhaust region e.g. through a series of equally spaced apertures (54), Fig. 5 (not shown). The gas is heated in sections such as 24, 28 prior to exhaust and the radial temperature variation produces a corresponding refractive index variation thereby causing each section to act as one half of a lens. The heating may be produced by conventional electric means or, as in a modification Fig. 3 (not shown), by thermoelectric means. In this latter method, tube sections of p-type and n-type materials are incorporated alternately into the guide as part of the guide and heat is produced at the regions desired on passage of a D.C. current through the guide. Beam sensors etc. may be positioned at the centres of inlet or exhaust regions and for this purpose the regions may actually be divided Fig. 2A (not shown) by glass plates (39, 40) to form an isolated compartment for the sensor.
Patent GB-1240130-A (GB)
Title: Slow-release adsorbed allergens
IPC: A61K9/00
Filed: 1968-09-19
Abstract: 1,240,130. Allergens. INSTITUT PASTEUR. 19 Sept., 1968 [26 Sept., 1967], No. 44535/68. Heading A5B. A method for the preparation of a slow release allergen comprises extracting the allergen from a powder which contains it by stirring the powder with an aqueous medium; separating the aqueous solution of the allergen, thus obtained, from the powder; precipitating the allergen from the solution by adding a neutral salt; separating the precipitate obtained; dissolving the precipitate again in water and adding an alumina gel to the water containing the dissolved precipitate. The extraction is suitably carried out using aqueous dibasic sodium phosphate and the precipitation by using ammonium sulphate. An antiseptic such as thimerosal may also be present. The allergens may be extracted from house dust, pollen, feathers, hair, scales, wool, mould, flour or kapok.
Patent GB-1025667-A (GB)
Title: Valve means for a pneumatic conveying system,for conveying a loose abrasive material
Inventor: JAKOBSMEYER ALFRED
IPC: F16K29/02
Filed: 1964-11-02
Abstract: 1,025,667. Pneumatic conveyers. POLYSIUS G.m.b.H. Nov. 2, 1964, No. 44643/64. Heading B8A. [Also in Division F2] A valve in a duct 2, 3 for pneumatically conveying abrasive material comprises a swivel arm 7 carrying a valve plate 4 which is urged on to a seating 6 by pressurized conveying medium. A stepped annular recess 9 in the top of the plate 4 houses an elastic membrane 10 held down on to the step by rings 11, 12 and an annular plate 15 in the recess 9 below the membrane 10 rests on balls in holes 13 in the plate 4 leading from the recess 9 into a lower circular recess 14. The latter loosely houses a disc 17 in an outer peripheral recess of which is housed an elastically resilient washer 22 which mates with the seating 6. The disc 17 is located in the recess 14 by a screw 18 passing freely through hole 20 in the plate 4, its head being urged upwardly by a compression spring 19 resting on a shoulder in the hole 20. With increased pressure, when the valve is closed, the membrane 10 deflects downwardly to urge the washer 22 on to the seating 6, via plate 15, balls 16 and disc 17.
Patent GB-1134823-A (GB)
Title: Electrical resistances and the like
Inventor: DRANSFIELD DESMOND
IPC: H01C10/44
Filed: 1964-11-04
Abstract: 1,134,823. Variable resistor. UNITED GAS INDUSTRIES Ltd. 4 Feb., 1966 [4 Nov., 1964], No. 44873/64. Heading H1S. A variable resistor has a resistive element which comprises an elongated deposit of metal on an insulating planar support 1 and is contacted by a movable contact mounted in a slot 2 in the support 1. Preferably two parallel resistive elements 5, 6 are connected in series by a continuation 7 of them at right-angles to their length (or are constituted by a single recurved element) and a movable conductive bridge member 4 is arranged to short-circuit a greater or lesser length of them as required. The resistive elements 5, 6 may taper towards their joined ends, so as to give a desired variation of resistance with the position of the bridge, or may be arranged with inverse tapers, so that large movements of the bridge result in small, controlled changes in the value of the resistance. The bridge member 4 may be in one piece with pressed contacts or may carry separate pivoted contacts, and may be biased towards the resistive elements by its inherent resilience or by a helical spring about bolt 3. Preferably the resistive elements 5, 6 are thin deposits of copper and their inner edges are parallel to slot 2. Support 1 may carry a scale, against which the position of the bridge member 4 may be read. A clamping knob may be fitted on the underside of bridge member 4 to retain it in position after adjustment.
Patent GB-1371370-A (GB)
Title: Preparation of photographic films for processing
IPC: G03D13/00
Filed: 1971-09-29
Abstract: 1371370 Preparing films for processing AGFA-GEVAERT A G 27 Sept 1971 [25 Sept 1970] 44942/71 Heading G2X In preparing, for processing, films contained in cartridges or cassettes having data carriers associated therewith, the cartridges are opened and the film removed, the films are joined together to form a continuous strip and the data is transferred on to the film. As shown, the cartridges 4 have a data-carrying section 4a attached thereto. The cartridges are fed along a table 3 until they reach a station 5 where the data-carrier 4a is cut off by a blade 6. The carrier falls on to a moving belt 8, while the cartridge passes on to a station 10 where it is broken open by a punch 11. The pieces of the cartridge fall into a chute 12, while the film is engaged, unrolled, and passed on to the splicing station 13. Strips of adhesive splicing tape 9 are carried on a band 14 through station 13, and successive strips of film are spliced together. At the same time the data-carrier 4a on belt 8 reaches station 13 and is joined on to one end of the film strip. Fig. 2 shows an arrangement for unrolling the film spool and separating the film from the backing paper. The spool 20 is held by mandrils 19 at the ends of arms 18, and engaged by a drive roller 21 having a high-friction surface. The beginning of the roll, which consists of backing paper, is guided by a tongue 25 to pass beneath it. The tongue is carried by a plate 27 having an aperture through which one arm 30a of a magnet armature 30 passes. When the leading end of the backing paper abuts against the arm 30a, it arches downwardly and engages against the feeler runner 26 of a switch 26a, but does not actuate the switch because of its pliability. As more and more backing paper is unrolled, it forms first a loop and then a roll 34. After a certain length of backing paper has been unwound, the leading edge of the film emerges, and is likewise guided until the edge abuts against arm 30a and arches downwards. Since the film is stiffer than the paper, when the arched film engages against feeler 26 the switch 26a is actuated. This energizes magnet.32, which lifts the armature 30 and hence arm 30a. The film is now free to move forwards and enters the guide channel 31. In an alternative arrangement the data may be exposed on to the film or stamped thereon. In this case the data is read off and marked on the film.
Patent GB-1410241-A (GB)
Title: Curing of polyurethane prepolymers
IPC: C08G18/83
Filed: 1972-09-29
Abstract: 1410241 Curing polyurethane prepolymers; imidazolidine ring-containing polymers EXXON RESEARCH & ENG CO 29 Sept 1972 [28 Oct 1971] 45104/72 Heading C3R [Also in Division C2] Isocyanate-containing prepolymers having a M.W. of 300 to 10,000 formed by the reaction of a polymer having active hydrogens with a polyisocyanate are cured by:-(a) mixing a dicyano formamido-forming organic catalyst with the prepolymer and a curing agent selected from: (i) HCN, (ii) HCN+polyisooyanate, (iii) polycyanoformamides having a M.W. of 40 to 2,000, and (iv) mixtures of the foregoing; (b) causing chain extension to occur between the prepolymer molecules wherein connecting linkages are formed, the linkages containing the heterocyclic ring: wherein X and Y are either =O or =NH provided X and Y are never the same. Preferred catalysts are tertiary amines, but organo tin compounds, organo phosphorus compounds and organo lead compounds may also be used. In a typical example, a prepolymer derived from diphenylmethane diisooyanate and a propylene oxide polyether is reacted with an adduct of diphenylmethane diisocyanate and HCN in the presence of triethylamine as catalyst. To increase the stability of the heterocyclic ring the imino group or the iminoimidazolidine ring of the resulting polymers may be replaced by an oxygen atom via hydrolysis with an aqueous mineral acid.
Patent GB-1237739-A (GB)
Title: Improvements in or relating to power transmission
IPC: F01B3/00
Filed: 1968-09-27
Abstract: 1,237,739. Reciprocating pumps,motors. SPERRY RAND CORP. Sept. 27, 1968 [Sept. 28, 1967], No. 45913/68. Heading F1A. A fluid-pressure pump or motor 10 comprises a rotatable cylinder block 32 which has a plurality of parallel cylindrical chambers 34 each communicating through a cylinder port 38 with a front face 40 of the block, a plurality of pistons 36, a valve plate 42 having arcuate ports 50, 52 and an annular bearing member 48 for independant relative rotation between bearing surfaces 118, 110 of the cylinder block and valve plate respectively. An "O" ring seal 18 ensures a fluid tight juncture of the two parts 14, 16. A recess 46 accomodates the bearing member 48, Figs. 3, 4 (not shown). A dowel pin 62 maintains proper alignment and prevents the valve plate 42 from rotating. A spring 84 biases the face 40 of the cylinder block into engagement with the valve plate face 43 and also biases shoes 41 into engagement with a thrust plate 44. The bearing member 48, Figs. 2, 3, 4, (not shown) having radial grooves (114), (122) and bearing pads (112), (120) provides a running clearance of about 0.0005 inches between the cylinder block face 40 and the valve plate face 43. In operation as a pump, fluid leakage flows out radially from the cylinder ports 38 across the cylinder block face 40 and via axial grooves (124) into radial grooves (114), (122) to lubricate the bearing pads (112), and fluid leakage flows into chamber 30. Thus while bearing member 48 rotates independently and at an intermediate value of the cylinder block speed there is less temperature build up, surface wear, and galling between the cylinder block and valve plate faces. A pump and motor may be combined to provide a fluid power transmission.
Patent GB-1414991-A (GB)
Title: Shaft for depositing fibre flock
IPC: B65G53/60
Filed: 1972-10-05
Abstract: 1414991 Discharge end of pneumatic conveyor H TRUTZSCHLER and H TRUTZSCHLER [trading as TRUTZSCHLER & CO] 5 Oct 1972 [28 Oct 1971] 45928/72 Heading BIT [Also in Division D1] The discharge end of a pneumatic conveyor comprises a downwardly directed conduit 1 open at the lower end where conveyed fibre flock is discharged between rollers 2, 3, and an air discharge opening 4 extending across the width of the conduit and partly closed by a roller 5 which can comprise an array of axially spaced flat discs or a helical spring (Fig. 4, not shown) of flat or round section wire. The spacing between the metal or plastics discs or the turns of the spring retains the flock in the conduit, but any flock which does penetrate the roller is blown therefrom by outgoing air where the rotating roller re-enters the conduit, and a brush at this point can assist in cleaning the roller. The roller 5 may be toothed, and an opening 4 could accommodate two interlocking rollers. The spring-type roller of Fig. 4 is supported by a backing roller (24) and its axial pitch is adjustable. The discharge flock may be fed to a carding machine.
Patent GB-460533-A (GB)
IPC: G03C7/14
Abstract: 460,533. Copying and projecting lenticular films. LASSUS ST. GENIES, A. H. J. DE. Aug. 16, 1935, Nos. 23097 and 23098. Convention dates, March 23 and May 14. [Classes 97 (i) and 98 (ii)] In projection copying or projecting lenticular films the distance of the plane of convergence of the elementary beams is rendered independent of the optical system employed by standardizing the distance of natural convergence by at least two thin spherical or cylindrical additional optical systems inserted in the path of the light rays. As shown, the additional optical system A gives a real image S<1> of the light source S in the zone CN of natural convergence of the film F. The additional optical system B displaces CN and S to P, the plane of the principal optical system. The additional optical system C imparts a standard distance of convergence to the copy film I. In projection, the colour filter may be in the plane P. Where the lenticulated face of the film faces the light source, A is divergent and B convergent, and the colour filter occupies the plane of the source.
Patent GB-976008-A (GB)
Title: Improvements in and relating to the production of unsaturated aliphatic nitriles
Inventor: BARCLAY JOHN LYNN
IPC: B01J23/18
Filed: 1962-12-08
Abstract: Acrylonitrile or methacrylonitrile is prepared by reacting at an elevated temperature in the vapour phase propylene or isobutene with oxygen and ammonia over a catalyst comprising (i) a mixture of the oxides of tin and antimony and/or (ii) a compound of tin, antimony and oxygen, as claimed in the parent Specification, characterized in that the catalyst has Sn:Sb n 1:4 and before use is heated in a molecular oxygen-containing gas to a temperature of at least 750 DEG C. but not more than 850 DEG C.  Specification 904,602 also is referred to.ALSO:A catalyst suitable for the production of acrylonitrile or methacrylonitrile comprises (i) a mixture of the oxides of tin and antimony and/or (ii) a compound of tin, antimony and oxygen, has Sn : Sb\sU1 : 4, and before use is heated in a molecular oxygen-containing gas to a temperature of at least 750  DEG C. but not more than 850  DEG C.  In an example, powdered tin and powdered antimony are separately added to separate portions of hot nitric acid, and the suspensions are mixed and cooled.  The solid material is washed by decantation, filtered and pelleted with graphite.  Samples of the catalyst are then heated to 825, 800, 775 and, for comparison, 725  DEG C.  Specification 904,602 is referred to.
Patent GB-1182648-A (GB)
Title: Improvements in or relating to Holders
Inventor: SCOTT-MCCARTHY BRIAN
IPC: A47G1/17
Filed: 1967-10-12
Abstract: 1,182,648. Wall brackets. JEYES GROUP Ltd. 7 Oct., 1968 [12 Oct., 1967], No. 46645/67. Heading A4B. A bracket for supporting a container 6, such as a cardboard box of toilet paper, comprises a plate 1 screwed or adhesively secured to a wall, a pair of planar members 2 extending from the front face of the plate 1 upwardly and substantially parallel to the plate 1, and protrusions 3 extending from the plate 1 from below the point of attachment of the members 2 to the plate. In use the members 2 and protrusions 3 engage holes 7 in the rear wall of the container 6. Edge members 8 may be provided on the plate 1. The plate 1 may have a foam backing (5, Fig. 1).
Patent GB-1492289-A (GB)
Title: Charge storage diode with varying defect density photocapacitive layer
IPC: G02F1/135
Filed: 1975-11-17
Abstract: 1492289 Photodiodes for A.C. light valves HUGHES AIRCRAFT CO 17 Nov 1975 [22 Oct 1975 18 Nov 1974] 47279/75 Heading H1K [Also in Division G2] A photodiode for use in a light valve comprises first and second semi-conductor layers 7, 6 having therebetween a rectifying junction, the first layer 7 comprising a first region 7a (Fig. 2) of low defect centre density and a second region 7b adjacent the junction and of higher defect centre density, the photoresponsive characteristic of the diode being the width, and hence the photocapacitance, of the depletion region associated with the rectifying junction and extending into the first layer 7. The higher defect centre density in the region 7b may be in the form of recombination centres, shallow traps or deep traps. In one embodiment the region 7a is of pure N-type CdS while the region 7b is of CdS 1-x Se x , where Se provides the defect centres, formed by reactive sputtering of a CdS target in an initial hydrogen sulphide atmosphere which is changed to a hydrogen selenide atmosphere for the final deposition stages, resulting in a graded band-gap structure. The same graded structure can be obtained by dual boat evaporation followed by a hydrogen sulphide heat treatment, or by dual target sputtering. In an alternative embodiment both regions 7a and 7b are of CdS, the differential defect density, in the form of recombination centres and shallow electron traps, being obtained by a progressive lowering of the substrate temperature during deposition. In each ease the second layer 6 is of P-type CdTe. In the light valve (Fig. 1) the layers 6, 7 are deposited on a transparent electrode 2a (e.g. of indium tin oxide) on a glass plate la through which incident light 10 is directed. The layer 6 is opaque and carries a multi-layered dielectric mirror S. A liquid crystal layer 13 located between passivating layers 3, 3a overlies the mirror 5, and the light valve is completed by a further transparent electrode 2 on a glass plate 1 carrying an anti-reflecting coating 11. High intensity light 9 projected on to the liquid crystal layer 13 is modulated to replicate the input image 10, which 'spacially gates' an A.C. voltage applied across electrodes 2, 2a to the liquid crystal layer 13. The advantage obtained by the use of the graded layer 7a, 7b is that the light-activated current switching ratio is nearly independent of operating frequency in the range 10<SP>2</SP>-10<SP>4</SP> Hz.