baber/WOPTO huggingface dataset:
Patent GB-1263119-A (GB)
Title: Echo suppressor
Inventor: CHIBA SEIBI
IPC: H04B3/23
Filed: 1969-11-12
Abstract: 1,263,119. Echo suppressors. NIPPON ELECTRIC CO. Ltd. 12 Nov., 1969 [21 Nov., 1968; 21 Jan., 1969], No. 55450/69. Heading H4R. In an echo suppressor in which an adaptive transversal filter 22, Fig. 2, synthesizes, from the signal R(t) arriving at the receive side of a four wire to two wire hybrid H, a signal to subtract, in subtractor 23, from the signal R<SP>1</SP>(t) on the sending side of the hybrid to cancel leakage across the hybrid, a period is detected in which there is no speech from the subscriber on the two wire side of the hybrid and the multipliers of the transversal equalizer are adjusted during this period in accordance with measurements made of the compensated output signal on the send line, divided by the input signal at a predetermined time. As described with respect to Fig. (3) the tap gain registers 320-329 of the transversal filter are set up by detecting a period of no signal from the subscriber, setting all the tap gain registers to zero, and the value of the incoming signal R(t) at a time to is entered into a register 37. The value of leakage through the hybrid due to the signal R(t) is R<SP>1</SP>(t) and this signal has subtracted from it, in subtractor 35, the value of the output of the transversal filter, which at this time is zero since all the tap gains are set to zero. The output of the subtractor 35 is divided by the value R(t) stored in the register 37 and the resulting value is fed into the first tap gain register 320. At succeeding instants of time, separated by the delay between successive taps of the filter delay line 31, the succeeding tap gain registers 321 to 329 are set by dividing the successive outputs of the subtractor 35 by the value stored in register 37 until all the tap gain registers have been set, at which time the filter is adjusted to cancel leakage across the hybrid. The analogue delay and registers may be replaced by their digital equivalents.
Patent GB-1306170-A (GB)
IPC: G06K13/14
Filed: 1970-11-25
Abstract: 1306170 Feeding sheets AGES AZIENDA GENERALE ELETTRONICA SERVOMECCANISMI SpA 25 Nov 1970 [26 Nov 1969 24 Sept 1970] 56033/70 Heading B8R Sheets 3 supported on edge on a platform 2 are separated by friction rollers 18, Fig. 4, float mounted on a shaft 17 on either side of rotatable metallic drum 19. The spacing between the drum 19 and the tip 20 of platform 2 is arranged to prevent passage of more than a single sheet. The sheets are contained between fixed front wall 4 and movable, spring biased rear wall 6 so as to urge the sheets towards friction rollers 18. When the pile of sheets is exhausted electrically conducting plate 37  touches drum 19 to complete a circuit and sound an alarm. (For Figures see next page.)
Patent GB-1284785-A (GB)
Title: Camera film winding-up system
IPC: G03B17/42
Filed: 1970-11-26
Abstract: 1284785 Camera control systems CANON K K 26 Nov 1970 [29 Nov 1969] 56190/70 Heading G2A A flip-flop circuit FF controls through one branch the film wind WF of a camera, and through another branch the shutter release RS, a pulser P picking up a signal from either branch to change over the flip-flop circuit to its alternative state. When the main switch SM is closed the initial conditioner conditions the flip-flop circuit. On operating the camera release RC the shutter release RS is actuated, and after the shutter action is completed, a detecting means DR receives a signal from RS and transmits it to the pulser P. This changes over the flip-flop circuit from its initially conditioned state of actuating the shutter release controller circuit CR to the state of actuating the film wind controller circuit CW. This delivers its output to the film wind means WF under the control of the release RC. When the wind is completed, the detecting means DW receives a signal from the winding means WF which is passed to the pulser P to change the flipflop circuit back to its original state. Fig. 5 (not shown) is a diagram of the electrical circuit, provision being made for changing from single frame to multi-frame exposure by means of a switch (S5) actuated by the shutter release button (22), this switch by-passing a switch (S4) for shutting off the motor (1). Fig. 3 (not shown) is a mechanical arrangement in which a motor drives a pinion (2) and hence the film winding means (6), and illustrates how, when the drive ceases, an arm (10) is pivoted against a spring (11) to close a switch (S1 which gives a pulse to the flip-flop circuit, so reversing it. This mechanism is replaced by electrical circuitry in the diagram of Fig. 6 (not shown).
Patent GB-1332195-A (GB)
Title: Polymers of acrylic ester compounds
IPC: C08F20/38
Filed: 1970-11-30
Abstract: 1332195 Acrylic esters EASTMAN KODAK CO 30 Nov 1970 [28 Nov 1969] 56794/70 Heading C2C [Also in Divisions C3 and G2] A monomer of the formula wherein x is 1 or 2, B is -CH 2 - or -S-R<SP>1</SP>-, wherein R<SP>1</SP> is a C 1  to C 4  alkylene group; R is H or CH 3 ; and A is (1) an adduct of 2 to 4 moles of a cyclopentadiene, or (2) an adduct of 1 to 4 moles of a cyclopentadiene and 1 mole of an α,#-ethylenically unsaturated dienophile; said adducts containing therein an alkylthio group when derived from less than 2 moles of a cyclopentadiene, is obtained by (1) reacting a mercaptan with an OH-substituted norbornene, and esterifying the product with acrylic or methacrylic acid; or (2) reacting a polycyclic alcohol, formate or acetate containing at least one thiosubstituted polycyclic group or a polycyclic compound containing at least 4 carbocyclic rings with an alkyl acrylate or methacrylate. Examples are given for the preparation of the compounds. They are useful in the preparation of homopolymers. 5(6) - (2 - Hydroxyethylmercapto)- 4,7 - methano - 2 - methylmercaptoperhydroindan is obtained by reacting methyl mercaptan in the presence of 2,2<SP>1</SP>-azobis (2-methylpropionitrile) with 3a,4,5,6,7,7a - hexahydro - 4,7 - methano- 5 - (2 - hydroxyethylmercapto)indene which is itself obtained by reacting 2-mercaptoethanol with dicyclopentadiene in the presence of 2,21- azobis (2-methylpropionitrile) and benzene as solvent. In a similar manner, 2-(2-hydroxyethylmercapto - 4,7 - methano - 5(6) - methylmercaptoperhydroindan is obtained from dicyclopentadiene via 3a,4,5,6,7,7a-hexahydro-4,7-methano-5- methylmercaptoindene. The preparation of 1,2,3, 4,4a,5,6,7,8,8a - decahydro - 1,4 : 5,8 - dimethano- 6(7) - methylmercapto - 2 - naphthol and 3- methyl - 5(6) - methylmercapto - 2 - norbornanemethanol is also described.
Patent GB-1285889-A (GB)
Title: Improvements in differential pressure transducers
Inventor: PENDLETON JOSEPH RAYMOND
IPC: G01L9/00
Filed: 1968-11-29
Abstract: 1285889 Pressure transducer UNITED KINGDOM ATOMIC ENERGY AUTHORITY 16 Jan 1970 [29 Nov 1968] 56870/68 Heading G1N [Also in Division H1] A differential pressure transducer comprises a ceramic flow preventing piston 11 mounted by springs 32, 33 at a centralized datum position and slidable in a ceramic cylinder 12 at the ends of which respective plates 13, 14 define chambers 16, 17 with fluid inlet pipes 21, 23, piston displacement being sensed by a differential transformer 27, 28 coupled to a ferromagnetic insert 19 in the piston. The piston has a circumferentially grooved surface 34 which defines a labyrinth seal with the cylinder to permit small fluid leakage between the chambers. The springs are of tungsten-irridium. In use the transducer is connected across a Venturi or to block one of a series of parallel channels. It is said to be operable at 600‹C. The transformer windings comprise ceramic rings on which are deposited metallic conducting layers (see Division H1). The ferromagnetic insert 19 may be replaced by coils. For figure see next page
Patent GB-1419108-A (GB)
Title: Process for bonding staple fibres into an essentially non-twisted  yarn
IPC: D02G3/40
Filed: 1972-01-08
Abstract: 1419108 Bonded, staple fibre yarn PAVENA AG 8 Dec 1972 [22 Dec 1971[56882/72 Headings D1F and D1W To form an essentially non-twisted, adhesively bonded yarn from staple fibres, an excess of liquid containing a distributed adhesive is introduced into a non-twisted staple fibre arrangement, the excess liquid is squeezed out, the fibre arrangement is compacted into a moist slubbing, the stubbing is subjected to a shocklike condensation of vapour, and the slubbing is dried by evaporating the liquid applied to it to set the adhesive and form the yarn. The liquid may be introduced into the fibre arrangement at room temperature, and the moist slubbing may be at the room temperature during condensation. The vapour may be at a superheated temperature at least 20‹C above the boiling point of the liquid introduced into the fibre arrangement, and may be produced by evaporation and superheating of the introduced liquid. Liquid may be supplied to the slubbing before condensation. The time between liquid application and condensation may be less than one second. The yarn may be cooled following the setting of the adhesive. The treatment of acrylic fibres and of carded raw cotton fibres is exemplified.
Patent GB-1417724-A (GB)
Title: Electrical musical instruments
IPC: H03K17/00
Filed: 1972-12-13
Abstract: 1417724 Electrophonic musical instruments MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 13 Dec 1972 [13 Dec 1971] 57533/72 Heading G5J Transistors T1-T5 in a preference circuit 4, are interconnected through series bias resistors R1-R5, so that simultaneous actuations of two (or more) manual keys K1-K5 will cause only one transistor to conduct, selecting that transistor which has the more negative base potential, and thereby opening one only of the corresponding gating circuits 21-25, with the result that one tone signal emerges at output terminal 7, selected from the tone generators 11-15. Gating circuit 21 comprises a switching unit 51, in which diode D conducts only when forward-biased by a potential from terminal Q, and a bi-stable memory unit 41, which has a "set" input ST, a "reset" input RT, and an output terminal Q. Following release of key K1, the memory unit 41 remains in the "set" condition, holding the switching unit 51 in conduction, and thus sustaining the output of tone f1 from generator 11, until a reset pulse arrives. Detector unit 8 monitors the D.C. potential derived from the memory unit output terminals Q, but has a threshold setting such that the "set" output of one memory unit alone cannot trigger it. Subsequent depression of another key K1-K5 will drive another memory unit into the "set" condition, and this combination of outputs from two memory units will trigger the detector unit, giving rise to a "reset" pulse, which will unlatch the former memory unit and thereby terminate the tone output hitherto sustained. The reset pulse does not affect a memory unit for which the key is still depressed. An alternative form of combined memory unit and detector unit, (Fig. 2, not shown), has a "sustaining capacitor" (C1), which becomes charged to the "set" input potential, via a diode (D1), and slowly discharges through a resistor (R81), when its key is released, thereby sustaining the tone output for a decay period, but which can be discharged rapidly for reset purposes by a transistor (T13), upon receipt of a reset pulse from a differentiating capactior (C2), whenever a key is first depressed. Reference, has been directed by the Comptroller to Specification 1,118,585.
Patent GB-1268000-A (GB)
Title: Benzimidazoles and a process for their preparation
IPC: A01N47/22
Filed: 1969-05-02
Abstract: 1,268,000. Benzimidazoles. ELI LILLY & CO. 2 May, 1969 [3 May, 1968], No. 57613/70. Divided out of 1,267,998. Heading C2C. Compounds of formulae wherein Y is hydrogen or fluorine and Z is hydrogen, fluorine, chlorine, -CF 3  or -CF 2 CF 3 , are prepared by cyclization of a corresponding o - phenylene diamine by heating with a compound of formula Z-CF 2 -COOH. The products have insecticidal and acaricidal activity. 3 - Nitro - 5 - trifluoromethyl - o - phenylene diamine is prepared by reaction of 2,6-dinitro- 4 - trifluoromethyl - 1 - chlorobenzene with ammonium hydroxide to give 2,6-dinitro-4-trifluoromethylaniline, followed by reaction of this with ammonium polysulphide. Reference has been directed by the Comptroller to Specifications 1,087,561 and 1,159,789.
Patent GB-1109538-A (GB)
Title: A television or radio receiver and cabinet construction therefor
Inventor: JOSEPH RAYMOND SAMUEL
IPC: H04N5/64
Filed: 1966-12-29
Abstract: 1,109,538. Cabinet constructions. GENERAL ELECTRIC CO. 29 Dec., 1966, No. 58118/66. Heading H3Q. A television receiver cabinet has a component-bearing board 7 on one assembly 5 with a hole therein at 33 for providing access to one surface of the board, and a second assembly mating with the first and carrying a closure panel 17 which covers the hole when the two assemblies are mated. The edges of the panel 17 slide in a pair of tracks 43 (Fig. 5), and the centre of the panel has a slot which engages similar tracks 45. The front of the panel is tapered to fit into members 47 on the front assembly 1 in a secure fashion. The panel 17 is moulded of polypropylene integrally with a mounting portion 19 for securing it to the rear of the cabinet, the connection between the two being of reduced thickness to act as a hinge and thus facilitate insertion of the panel beneath the board 7. The attachment of the panel to the rear of the cabinet is by means of heat-deformable pins 41. The board 7 is mounted by clips 35 fixed to ribs 37 on the assembly 5 adjacent to the tracks, and engages notched members 39 on the frame of the cabinet. An interlock is provided so that operation depends on proper mating of the two assemblies.
Patent GB-1277868-A (GB)
Title: Electromagnetically operated friction coupling or clutch
IPC: F16D27/112
Filed: 1970-12-08
Abstract: 1277868 Friction clutches ZAHNRADFABRIK FRIEDRICHSHAFEN AG 8 Dec 1970 [23 Dec 1969] 58304/70 Heading F2C In an electromagnetically operated clutch wherein energization of a stationary electromagnet 12 moves an armature 14 into engagement with a pole-piece 13, the armature comprises concentric rings 14<SP>1</SP>, 14<SP>11</SP> separated by an air gap 25 and connected to a pulley 3 by an annular spring 15 whilst the polepiece 13 comprises concentric pole rings 13, 32 separated by a magnetically insulating disc 33 having a magnetically conducting insert 31. The two part armature 14 and insert 31 produce a flux path 20 as shown. The polepiece 13 is fast with a shaft 2. The spring 15 has annular slots (19), Fig. 2 (not shown) aligned with the air gap 25. The armature 14 may be provided with annular grooves 18 or annular magnetically insulating inserts 181. (For Figure see next page)
Patent GB-1316030-A (GB)
Title: Etchant for chemical dissolution of copper
IPC: H05K3/06
Filed: 1971-12-21
Abstract: 1316030 Etching MITSUBISHI GAS CHEMICAL CO Inc 21 Dec 1971 [26 Dec 1970] 59393/71 Heading B6J A composition suitable for etching copper comprises an aqueous solution containing 5-40 grams/100 c.c. of a persulphate, e.g. ammonium and/or sodium persulphite, and ammonia in a molar concentration of from 1 to 10 times the molar concentration of the persulphate. Ammonium, sodium or copper sulphate may be added to the solution together with a polar, water soluble, organic stabilizer for the persulphate selected from mono-, di- or poly-hydric alcohols, aldehydes, ketones, carbonic acids, esters, ethers, sulphoxides, amines, sulphonic acids and nonionic, cationic and anionic surface active agents. A printed circuit may be produced by masking a copper foil covered plate with solder and then etching away the exposed copper using the above solution.
Patent GB-1291430-A (GB)
Title: Improvements in or relating to holograms
Inventor: LANGDON ROGER MARTIN
IPC: G03H1/20
Filed: 1970-12-15
Abstract: 1291430 Phase holograms MARCONI CO Ltd 17 Sept 1971 [15 Dec 1970] 59413/70 Heading G2J In producing a phase hologram an amplitude hologram 4 formed in a photographic emulsion is placed adjacent a layer of photo-resist material 7 on a substrate 8, e.g. a glass plate, and illuminated from the side opposite that adjacent the photo-resist by monochromatic light, the photo-resist being developed and etched. Preferably the hologram 4 and photo-resist 7 are in contact. The photo-resist material may be dichromated gelatine. The monochromatic light is of wavelength 4358A and is derived from a mercury vapour lamp 9 filtered at 10.
Patent GB-1377758-A (GB)
Title: Method of underwater arc welding
IPC: B23K9/00
Filed: 1971-12-07
Abstract: 1377758 Welding by fusion ANNA WELDING CORP 7 Dec 1971 60097/73 Divided out of 1377757 Heading B3R  In underwater, consumable electrode, A.C. or D.C., arc welding using a gun 64, gas at a pressure exceeding water pressure is used to insulate a wire feed trigger switch 66 and to keep water out of contact with the arc and the welding zone of the workpiece. As shown, a wire supply reel 38 and wire feed mechanism 60 are enclosed in a submersible water tight box 20 provided with a wire feed control knob 40. The box has two openings, one, 32, connected by a conduit 16 to a power source and air blower (10) and a shielding gas source (14) carried by a boat on a water surface (Fig. 1, not shown), and the other, 96, connected by a conduit 74 to the welding gun 64. The power source may be a generator and a rectifier producing D.C. The conduit 16 encloses a power cable 22, an earth wire (24), a shielding gas line 26 and a 110V, A.C. feed motor cable 28. The gas source (14) may supply gas both to the conduit 16 and hence the interior of the box 20 and to the gas line 26; alternatively, the conduit 16 and box 20 may be fed with air as from the source (10). Consumable electrode wire 94 from the feed mechanism 60 is passed to the gun through a guide tube 62 carrying the gas from the line 26. The conduits 16, 74 may be of rubber or rubberized or plastics fabric permitting trigger switch actuation therethrough. As shown, gas through the tube 62 issues from a gas nozzle 76 to provide an inner annular gas shield, and gas or air in the conduit 16, box 20 and conduit 74 is fed from a plastics or steel tube (86) surrounding the nozzle 76 to provide an outer annular gas or air shield. Shielding gases may be He, Ne, Kr, Xe, Rn, A (e.g. with 1-5% oxygen) or CO 2  alone or as a mixture with any of the aforesaid gases. Inner and outer gas shields may be of the same or different gases.
Patent GB-1314850-A (GB)
Title: Pneumatic or hydraulic piston and cylinder arrangement
IPC: B66F3/30
Filed: 1970-12-23
Abstract: 1314850 Fluid-pressure apparatus DUDEINS INDUSTRIEGERATE - HANDELSGESELLSHAFT mbH 23 Dec 1970 [27 Dec 1969] 61268/70 Heading F1D In a pneumatic or hydraulic piston and cylinder arrangement comprising a double-acting piston 6 slidable in a cylinder 1, a cover member 3 is slidable to a limited extent in the cylinder 1 and has a central bore which receives a piston rod 5, and a rockable locking member 4 has an aperture 4' slightly larger than the piston rod 5 which passes through it and is urged in the direction towards the cover member 3 by a spring 9. Fluid under pressure admitted to an inlet 2a raises the piston 6 together with a load G. When the pressure below piston 6 drops, the rocking member 4 locks the piston rod 5 in its raised position. The piston 6 may be lowered either by lifting the locking member 4 manually or by admitting fluid under pressure to an inlet 25 which causes the cover 3 to lift and raise the locking member 4. In a modification, shown in Fig. 2, a piston rod 5 is locked in both directions by locking members 4, 14 and two cover members 3, 13 are employed. To raise the piston 6, fluid under pressure is supplied through inlet 2a to the space below the piston 6 and through inlet 12 to the space above cover member 13 in order to release the locking member 14.
Patent GB-2002261-A (GB)
Title: Nozzle for spraying liquid media
IPC: B05B1/04
Filed: 1978-07-26
Abstract: A nozzle for spraying liquid media, eg., a flat-jet nozzle for plant spraying, is injection moulded in synthetic thermoplastic material, said nozzle having walls of uniform thickness surrounding a central liquid passage 11, 12. This passage is constricted in stages towards a mouth 13 within a radially inner part 17 having a cylindrical shape, while a radially outer part 18 is separated from the inner part by an annular gap 16 and having a uniform thickness approximately equal to the wall of the inner part, including where flats 14, 15 are provided on the outside of the outer part. The radially inner part 17 is connected to the radially outer part 18 by radial webs, at approximately 90 DEG  to each other, and arranged in symmetrical pairs around the mouth 13 which is slit-shaped. The annular gap extends axially to such a depth that the wall thickness at the junction between the stages of the central liquid passage is equal to the wall thickness elsewhere. <IMAGE>
Patent GB-2027538-A (GB)
Title: Evaluating mechanical deformation characteristics
IPC: G01N3/06
Filed: 1978-08-10
Abstract: Apparatus for evaluating characteristics of the deformation of a specimen of material subjected to mechanical, particularly tensile, stress in an appliance 1 comprises TV-camera 2, which in operation scans the specimen, a control device 3, and an evaluating unit 4. The camera provides input signals to the unit and device, these signals being analysed to detect the onset of deformation in the test specimen and to provide corresponding control signals to the appliance 1 to control the loading programme for the test. <IMAGE>
Patent GB-2007796-A (GB)
Title: Safety guard for ironing machine
IPC: F16P3/12
Filed: 1978-10-31
Abstract: A finger guard 1 for a laundry flat- work ironing machine comprises a light sheet metal barrier bent into a hollow form of triangular cross section and extending across the machine between guard end plates 2. On the outside of each end plate are two horizontally spaced recirculating ball slides 3 that are mounted on a respective fixed guide shaft 6 extending horizontally fore and aft of the machine, thereby enabling the finger guard to move fore and aft parallel to itself without skewing. <IMAGE>
Patent GB-2011569-A (GB)
Title: Lubricating means for a cam of a camshaft
IPC: F01M9/10
Filed: 1978-11-30
Abstract: Lubricating means for a cam of a camshaft (3), particularly but not exclusively for a cam of an internal combustion engine, with a feed channel (5) terminating in a camshaft bearing (4) and a groove (6) for effecting spraying having an exit opening directed towards a cam runway and which communicates with the feed channel (5) when the camshaft (3) is in at least one particular position of rotation, in which the spraying groove (6) is arranged in a parting surface (7) of a housing of the camshaft bearing (4), and/or in a bearing surface (9) provided by the housing, and in which a bearing surface (13) of the camshaft (3) is formed with a control-effecting groove (12) extending around a portion of the periphery of the camshaft via which control-effecting groove (12) the spraying groove (6) communicates with the feed channel (5) when the camshaft (3) is in that particular position of rotation. <IMAGE>