baber/WOPTO huggingface dataset:
Patent GB-1534418-A (GB)
Title: Am stereophonic transmission system
IPC: H04H1/00
Filed: 1976-12-23
Abstract: 1534418 Stereo broadcasting SANSUI ELECTRIC CO Ltd 23 Dec 1976 [26 Dec 1975 (2)] 53973/76 Heading H4R In an amplitude modulated stereophonic broadcast system the broadcast signal comprises a first carrier component, a second carrier component, of the same frequency as the first carrier component but advanced in phase by 45 degrees, which is DSB suppressed carrier amplitude modulated by a first audio information signal, and a third carrier component, of the same frequency as the first carrier component but retarded in phase by 45 degrees, which is DSB suppressed carrier amplitude modulated by a second audio information signal, the first and second audio information signals being stereo related R and L signals which are relatively phase shifted by 90 degrees before modulation. As described with respect to Fig. 5, the L and R signals after phase shifting are combined in 15 and 16 to produce L + jR and L - jR signals which amplitude modulate quadrature carriers from generator 17, the outputs being either summed or differenced to provide the broadcast signal of the form of the invention. Alternatively, Fig 6 (not shown), the phase shifted L and R signals can amplitude modulate carriers which are shifted respectively  #/4 relative to a standard carrier and the three carrier combined to provide the broadcast signal. For a high power transmitter the output signal from either of the above arrangements could be demodulated and used to amplitude modulate a carrier derived by limiting the signal, Fig. 7 (not shown). At the receiver the original audio signals can be recovered by deriving a synchronous carrier, e.g. using a PLL shifting the carriers  #/4 and synchronously demodulating and phase shifting to provide the R and L signals, Fig. 8 (not shown), or by using the carrier and a #/2 phase shifted version the L + jR and L - jR signals are recovered which can be dematrixed and phase shifted to recover the R and L signals, Fig. 9 (not shown).
Patent GB-1335543-A (GB)
Title: Method of producing a copper or copper alloy wire having a layer of tin or tin alloy of thickness greater than 3 microns on it
IPC: B21C37/04
Filed: 1970-11-12
Abstract: 1335543 Drawing SIEMENS AG 12 Nov 1970 [13 Nov 1969] 53976/70 Heading B3P [Also in Division C7] In a process for hot-clip tinning of a copper wire by passing it through a bath 7 and a die 11  as described in Specifications 1,335,053 and 1,335,542 the wire is subsequently drawn by rollers 18, 19, and a drawing die 15. The roller 19 may be of larger diameter and rotate faster than the roller 18.
Patent GB-1483810-A (GB)
Title: Circuit for automatically correcting the timing of clock pulses in self-clocked pulse/signal decoders
IPC: G11B20/10
Filed: 1974-12-13
Abstract: 1483810 Data transmission SONY CORP 13 Dec 1974 [18 Dec 1973] 54018/74 Heading H4P The invention relates to decoding a dynamically modulated (DM) non-return-to-zero (NRZ) pulse code modulation signal carrying an encoded clock signal to provide the NRZ signal at output 5, Fig. 2, and the recovered clock signal at output 6. In a DM signal, Fig. 1, a logic 1 is represented by a transition in the centre of a bit cell and only in the case of a 101 NRZ pattern does the DM signal have a steady level extending through four half bit cells, which can therefore be detected by comparing the 1st, 4th and 2nd or 3rd of four consecutive half bit cells and the recovered clock signal # 2  should not coincide with the 4th half bit cell. In Fig. 2, monostable multivibrators 2, 3 respond to up and down transitions in the DM signal and circuit 10 fills in the missing pulses to generate a pulse train C at twice the bit cell rate, from which a flip-flop 22 and AND gates 23, 24 derive two interleaved clock pulse trains # 1 , # 2  at the bit cell rate. Alternate half bit cells, sampled by flip-flop 26 clocked by # 1  are compared with the next half bit cell by EX OR gate 27 to provide the NRZ output signal, clocked out by # 2 . To ensure the correct set of alternate half bit cells has been sampled, a further comparison is made by EX NOR gate 32 between the newest half bit cell and one that occurred three half bit cells previously; if all three compared half bits are equal and a # 2  pulse is present, AND gate 34 sends a correction pulse to flip-flop 22 to interchange the phases of # 1  and # 2 .
Patent GB-1299119-A (GB)
Title: Plastics, single component, button-type fasteners and the method of securing them to material
Inventor: CARLILE A E
IPC: A44B1/08
Filed: 1970-11-18
Abstract: 1299119 Button fasteners TEXTRON Inc 18 Nov 1970 [8 Dec 1969] 54826/70 Heading A3H A button-type fastener is constructed from a plastics material as shown in Fig. 1. When attaching to a garment material tapered stem 26 is forced through the material which is then held in the undercut 32. A tool part of which is shown as 34 is then used to 'coldwork' the stem 26 by flattening it thus gripping the garment material as shown in Fig. 2 and part of the stem is sheared by sliding cylindrical member 42 down part 38 so that a portion 50 of the stem is formed. This prevents the stem 26 from springing back into its original shape.
Patent GB-1423756-A (GB)
Title: Apparatus for measuring the coefficients of sound insulation
IPC: G01H3/12
Filed: 1973-11-28
Abstract: 1423756 Sound insulation measurement OFFICE DE RADIODIFFUSION-TELEVISION FRANCAISE 28 Nov 1973 [28 Nov 1972] 55132/73 Heading H4D Apparatus for measuring the coefficient of sound insulation of a partition comprises first and second omnidirectional microphones 101, 201 for positioning on respective sides of the partition, an attenuating and amplifier chain 102-113 driven by microphone 101, an amplifier chain 202-213 driven by microphone 201, the chains including networks 112, 212 to provide frequency-amplitude weighting (to the International A-weighting curve), rectifier bridges 301, 301<SP>1</SP> receiving the outputs of the chains, and a measuring device 303 to detect lack of balance of the two bridge outputs. In use, the apparatus is initially balanced by positioning both microphones on the quieter side of the partition, setting calibrated attenuaters 107, 109 to give minimum attenuation, adjusting potentiometer 105 to give full-scale deflection on device 303 (a centre-zero voltmeter) while switches 103, 203 are set as shown, and adjusting potentiometer 205 to give fullscale deflection in the opposite sense while the switches are in their alternative positions. Microphone 101 is then moved to the noisier side of the partition and the insulation measurement is made by adjusting attenuators 107, 109 to restore the bridge output balance (both switches being in the measurement position m). The sound source may be background noise, or loud-speakers energized by a tape recorder, or a shock-producing machine.
Patent GB-1276849-A (GB)
Title: Windscreen wiper mechanisms
IPC: B60S1/20
Filed: 1968-11-25
Abstract: 1276849 Windscreen wipers JOSEPH LUCAS (INDUSTRIES) Ltd 11 Nov 1969 [25 Nov 1968]  55713/69 Heading A4F In a windscreen wiper mechanism of the kind including a drive motor, cable means secured to a link for movement therewith and engaging pulleys on two wiper drive-shafts to couple the shafts for simultaneous movement, and means for transmitting drive from the motor to the assembly comprising the link and shafts to reciprocate the link and so angularly oscillate the drive-shafts, the axes of rotation of the drive-shafts 13 lie generally in the same plane but are at an angle to one another and the pulleys 14 each have an axially extending plain peripheral surface which is engaged and traversed by the cable means 16 as the link 15 reciprocates.
Patent GB-1490240-A (GB)
Title: Moisture-curable silicone sealant compositions
IPC: C09K3/10
Filed: 1974-12-24
Abstract: 1490240 Silicone sealant compositions TEROSON GmbH 24 Dec 1974 [28 Dec 1973] 55868/74 Headings C3T and C3P  A silicone sealing composition comprises a cross-linkable organopolysiloxane, a crosslinking agent for said siloxane which cures the composition in the presence of moisture, and a polybutylene having a molecular weight below 600, and optionally a non-crosslinkable silicone oil. The preferred crosslinking agent is an acetoxysilane. The weight ratio of silicone oil to polybutylene preferably ranges from 3 : 1 to 1À3. Suitable polybutylenes are poly-nbutylenes, polyisobutylenes or mixtures of polyisobutylene and/or poly-α-n-butylene and/or poly-cis-#-nbutylene and/or poly-trans-#-n-butylene. The compositions are preferably solvent-free. In the examples solvent-free sealant compositions are prepared from a crosslinkable silicone polymer (M.Wt. 50,000), a non-crosslinkable silicone oil (M.Wt. 1000), polybutylene (M.Wt. below 600), pyrogenic silicic acid, an acetoxy silane and either (1) a silane adhesion promoter, or (2) chalk and titanium dioxide.
Patent GB-1287004-A (GB)
Title: Method of washing cars and apparatus for carrying out the method
IPC: B60S3/06
Filed: 1969-11-14
Abstract: 1287004 Cleansing of vehicles KLEINDIENST & CO 14 Nov 1969 [22 Nov 1968] 55940/69 Heading B7J A method of washing cars 1 and apparatus for carrying out the method prevents damage to the surface of the car 1 during the washing process by the use of feeler elements 16 (having hinges 17 and trip cams 18) situated between washing bristles of a horizontal rotating washing brush 4, which feeler elements 16 are displaced on deformation of the washing bristles during the washing process to start the control device of a lifting motor 8, so that the brush 4 is lifted out of a position in which it may damage the car by means of tackle 6 and a cable or rope drum 7. The feeler elements 16 may also operate a second switch which starts a feed motor which causes the washing apparatus to reciprocate along the car 1. In a further construction (Fig. 6), the feeler elements 16 may be replaced by an annular stop 39. The stop or check ring 39 encloses the shaft 23 of the washing brush 4 and may be made of synthetic resin or other material which has a certain rigidity but will not damage the car upon contacting it. The brush may be free from bristles in the zone of the stop 39. The check ring 39 is pivotally suspended from a bearing 40 of a stirrup 22 and carries a cam arrangement 41 co-operating with a switch 42, which switch is operated if the brush 4 approaches the vehicle sufficiently closely to cause damage. As indicated in Fig. 1, arms 9 are provided on a portal-like chassis 2 and have a cross-rail 10 on which trolleys 11 are horizontally guided, the trolleys 11 being connected to supporting frames 12 which support vertical rotary washing brushes 13 driven by a rotary motor 14. A motor 15 can move the trolleys 11  transversely of the washing apparatus on the cross-rail 10 by means of a rope pulley 19 and tackle 20.
Patent GB-1491029-A (GB)
Title: Thermal swing gas adsorber
IPC: F16L59/02
Filed: 1974-12-27
Abstract: 1491029 Insulated gas adsorbent vessel UNION CARBIDE CORP 27 Dec 1974 [28 Dec 1973 6 Dec 1974] 55944/74 Heading B1L A gas adsorbent vessel comprises a rigid outer casing 10, an adsorbent bed 12 within the casing, support 13 for the bed, gas flow passage means 16 in the bottom wall and 17 in the top wall, a compressible fibrous layer of thermal insulation material 21 (Fig. 3) having fibre diameter of less than 20 microns and an uncompressed porosity greater than 0.95 positioned against the casing inner surface on the portion thereof adjacent to the adsorbent bed, a multiplicity of rigid preformed sheets 22 of thermal insulation material having permeability (defined) of less than 150 ft<SP>2</SP>/hr-atm based on air at 70‹F, the sheets being planar and covering the fibrous layer, which layer has a maximum thickness of ¢ inch, and means for positioning and compressing the fibrous layer-rigid sheet assembly against the casing such that the ratio of the density of the fibrous layer in the compressed state to its density in the uncompressed state is at least 1.5. The rigid sheets 22 preferably consist of a matrix of colloidal calcium silicate and reinforcing glass fibres, other suitable materials being refractory oxides &c of silicon and aluminium, and glass foams. The compressible fibrous layer is preferably formed of glass fibres but others, e.g. asbestos, alumina-silica and nylon, are also suitable. The upper plenum area 19b may also be thermally insulated with a fibrous insulation 91 affixed to the inner wall.
Patent GB-1348968-A (GB)
Title: Twisting devices for filaments especially for textile filaments
IPC: D02G1/08
Filed: 1972-12-05
Abstract: 1348968 Mounting and driving rings in false twisters SOC CIVILE TEXTILE DITE SOCITEX 5 Dec 1972 [5 Jan 1972] 55999/72 Addition to 1304493 Heading DID In a false twisting device at least one ring 4 which internally contacts the yarn 3 is mounted for rotation against a driving roller 5 and a support roller 51. The outer edge of the ring is of magnetic material and the ring is held in place by a magnet 52. As shown the rings are arranged in two sets but all contact a common driving roller 5. The sets are mounted to be relatively swung about drive roller 5 as shown. The rings have the cross section shown in Fig. 5 in which part 55 may be a high frictional resistance material. Discs 8 of roller 5 and also the rollers 54 may have an outer edge of flexible material. Specification 1304493 is referred to.
Patent GB-1150100-A (GB)
Title: Seed pregerminating and planting process
Inventor: KELLY OMER JOSEPH
IPC: A01C1/04
Filed: 1966-12-20
Abstract: 1,150,100. Seed tapes. STANFORD RESEARCH INSTITUTE. 20 Dec., 1966, No. 56888/66. Heading B8C. [Also in Divisions Al and A2] Apparatus for forming a seed tape comprises reels 10, 11 of paper mounted on axles 12, 13, the paper strips 14, 15 from each reel passing round an idler roller 16 to a punch 17 provided with an index punch member 22 and a seed-hole punch member 23 which co-operate with a base 24. The punch is operated by a lever 18 having at one end a cam follower 20 co-operating with an eccentric cam 26 on a driven roller 25. After being punched, strip 14 passes over rollers 30- 32 to a glue pot 33 where adhesive is applied by applicator 35, the strip then passing to roller 38 overlying a seed hopper 41. Strip 15 passes direct from the punch to the seed hopper where seeds are attracted into the seed holes by means of vacuum head 43. Strip 15 then also passes over roller 38 where it is covered by strip 14, the completed tape being wound on to drive reel 45.
Patent GB-1287740-A (GB)
Title: Improvements relating to liquid level sensors
Inventor: WALL REGINALD VICTOR
IPC: G01C13/00
Filed: 1968-12-02
Abstract: 1287740 Liquid level indication PLESSEY CO Ltd 9 Dec 1969 [2 Dec 1968] 57116/68 Heading G1H At liquid level sensor comprises a stainless steel pipe closed at one end by a pressure res- .ponsive device and at the other by a pressure sensor which measures the pressure transmitted thereto from the pressure response device through a liquid filling the pipe and comprising primarily methyl alcohol.
Patent GB-1408348-A (GB)
Title: Machine tools
IPC: B23Q16/10
Filed: 1973-12-12
Abstract: 1408348 Indexing WARNER & SWASEY CO 12 Dec 1973 [24 Jan 1973] 57634/73 Heading B3B  A machine tool comprises a tool turret 12 mounted for indexing rotation by means of a turret bar 32 and movable axially between a retracted position and an extended position, and wherein the indexing means includes a fluid pressure operated coupling means 24 operable between engaged and disengaged positions said coupling means 24 comprising a first coupling member 48 having a first annular array of teeth, a housing 54 fixedly connected with the first coupling member 48 to define a main chamber 76, a second coupling member 62 fixedly connected to the turret bar 32 within said main chamber 76 and having a second annular array of teeth, and control means for providing pressure fluid selectively to either side of the second coupling member 62 in the main chamber 76 to either interengage the first and second annular arrays of teeth, or to separate them when turret indexing is required. A cam and switch sensing device 114 detects the mode of the coupling means. In an indexing operation the turret 12 is moved to its extended position by a screw and ball nut drive 106, 108, 110 Which acts through a drive plate 52 attached direct to the coupling means first coupling member 48. In the extended position a gear 160 on the turret bar 32 engages an indexing drive gear 162 mounted in the turret housing 38 and driven by a motor 164. The coupling means 24 is then disengaged to allow indexing of the turret. The whole turret housing 38 and its contents are movable laterally on slide ways 40 by a lead screw drive 36.
Patent GB-1394368-A (GB)
Title: Disperse azo dyestuffs
IPC: C09B29/08
Filed: 1972-12-14
Abstract: 1394368 2-Amino-3-nitro-thiophene derivatives IMPERIAL CHEMICAL INDUSTRIES Ltd 15 Jan 1973 [28 Jan 1973] 57676/72 Divided out of 1394365 Heading C2C [Also in Division C4] 2 - Amino - 3 - nitro - 5 - carbamoylthiophene is obtained by reacting 2-bromo-3-nitrothiophene-5-carboxylic acid with thionyl chloride, and subsequently with ammonia. 2-Amino-3- nitro - 5 - (N - phenylcarbamoyl) - thiophene is obtained analogously, reacting first with aniline and subsequently with ammonia to replace the bromine atom by an amino group. 2 - Amino - 3 - nitro - 5 - methoxycarbonylthiophene is prepared by esterifying 2-bromo-3- nitrothiophene-5-carboxylic acid and reacting the bromoester with conc. aq. ammonia in the presence of dimethyl formamide. 2 - Amino - 3 - nitro - 5 - (# - methoxyethoxycarbonyl)thiophene is prepared by a transesterification reaction.
Patent GB-1271609-A (GB)
Title: Disc brake assemblies
Inventor: BROOKS FRANK WUICHET
IPC: F16D55/224
Filed: 1970-12-10
Abstract: 1,271,609. Disc brakes. GENERAL MOTORS Ltd. 10 Dec., 1970 [18 Dec., 1969 (2)], No. 58630/70. Heading F2E. A disc brake with a floating caliper 14 has means 84, 86 mounted between registering grooves in the caliper housing 48 and a support member 12 for supporting and guiding the caliper and brake pads 62, 66 for sliding movement relative to the support member and for dampening rattle. The groove 72 provided in caliper housing 48 register with grooves 44, 46 in sides 32, 34 of arms 28, 30 of support member 12. The supporting and guiding means includes a sleeve 88 provided with flat portions 118, 120 located in groove 72 and is fabricated from a polyamide resin in which rubber bushes 92, 94 are inserted through which a retaining pin 90 extends held in position by a pin head 96 at one end and a keeper 98 at the other the preloaded resilience of bushes 92, 94 acting to absorb shocks and eliminate rattle. Sleeve 88 has transverse to slots 102, 104 axially spaced to receive arms 32, 34, the latter engaging the pin body 100. A centre portion 106 of sleeve 8 has a flange 108 forming an abutment limiting movement of the pad 62 in the direction of side arm 34. A further flange 114 limits movement of pad 66. Sliding movement of between pads 62, 66 and the means 84 takes place between an arcuate portion of member 88 and backing plates 60, 68 for the pads by constructing each to have its lining provided at either end with hook like ends 122, 124, Fig. 1 (not shown), having semicircular slots fitting over each means 84, 86. In further embodiments the sleeve is circular and is provided on its outer periphery with ribs (132) providing the shock absorption. The ribs may be located on spaced flat surfaces (144), (146) of sleeve 88.
Patent GB-1200948-A (GB)
Title: Ultrasonic holography with colour rendition
Inventor: BRENDEN BYRON BYRNE
IPC: G03H3/00
Filed: 1967-12-29
Abstract: 1,200,948. Holography. HOLOTRON CORP. Dec.29, 1967 [Dec.30, 1966; Sept.12, 1967; Dec.18, 1967], No.59153/67. Headings G2C and G2J. [Also in Division H4] Ultrasonic holograms from which multiple images, in different colours, of an object can be reconstructed are formed by directing ultrasonic energy including at least two distinct ultrasonic frequencies via the object to a hologram-detecting surface in a fluid medium and also directly to the detecting surface, the two frequencies of the directly transmitted energy being respectively coherent with the two frequencies of the energy transmitted via the object. In the Fig. 7 embodiment for detecting internal tumours in the body from the relative capacities of the body to 3MHz and 9MHz ultrasonic waves, 30Ás pulses alternately of 3MHz and 9MHz and at 500Ás intervals are applied to transducers 15 and 19 in parallel to provide "reference" and "object" ultrazonic beams, respectively, which interfere to give two different standing-wave patterns (holograms) in water surface 17. Collimated light from a mercury arc source 20 is diffracted by the standing waves into several beams which are focused to spatially separated points by lens 24. The separation of the points is a function of both the ultrasonic frequency # and the light wavelength X. An apertured mask 25 blocks all beams except (a) the first order real image beam diffracted from the hologram formed with ultrasonic frequency 3MHz and illuminated by wavelength # 1  and (b) the first order real image beam for the hologram formed with ultrasonic frequency 9MHz and illuminated by wavelength # 2 . Lens segments 44, 45 and optional prism 49 convert these two beams to equal-size images which coincide at 50 to provide a composite two-colour image when viewed. This image is scanned by a vidicon tube 51 supplying a television monitor 53. A shutter 54 blocks light in the intervals between the 30Ás ultrasonic pulses. Instead of producing real images from the two first order beams, light from the zero or another order diffracted beam may be made to interfere with the first order beams from mask 25 (if source 20 is replaced by a coherent source) and the resulting holograms are then recorded on photographic film Fig.3, (not shown) for subsequent reconstruction. In various modifications (a) the "object" ultrasonic beam is formed by reflection from, rather than transmission through, the object; (b) two pairs of transducers are used (one pair for each frequency); (c) the two ultrasonic frequencies are generated simultaneously instead of alternately; (d) two vidicon tubes supplying a single television monitor scan the images from lenses 44, 45 respectively to produce the composite image; (e) a colour filter wheel synchronized with the switching between the different ultrasonic frequencies intercepts the light from a monochromatic source used to illuminate the ultrasonic holograms, or mask 25 may be provided with different coloured filters if a monochromatic source is used.
Patent GB-1404139-A (GB)
Title: Device for introducing rods, dowels or the like into concrete paved carriageways
IPC: E01C23/04
Filed: 1971-12-23
Abstract: 1404139 Paving machines ROBERT MCGREGOR & SONS LTD 30 Oct 1972 [23 Dec 1971] 59854/71 Heading E1G In a slip form or other concrete paving machine (not shown) having a conforming plate 11 and possibly vibrators 23, 24, a device 10-12 is fixed in front of the plate 11 for introducing dowels 14 into the wet concrete as the machine advances-e.g. for bridging expansion joints formed by notching the unset concretethe device comprising a holder 10 for one or more magazines 21 of dowels 14, one or more outlet guide tubes 12, and trigger means 13 movable rearwardly at the speed of advance to push a line of dowels along each tube 12. The holder 10 is in the form of a transverse beam having a row of outlet tubes 12 and corresponding inlet tubes 22 for re-stocking the magazines 21. The trigger means 13 comprises a reciprocable cross-head 19 carrying spring- loaded fingers 20-one for each guide tube 12. The trigger means 13 is actuated manually or automatically by undisclosed mechanical, electrical, hydraulic or pneumatic means.