baber/WOPTO huggingface dataset:
Patent GB-1136341-A (GB)
Title: Improvements in or relating to multitone code-signal receivers
IPC: H04Q1/453
Filed: 1966-10-20
Abstract: 1,136,341. V.F. code signal receivers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 20 Oct., 1966 [23 Oct., 1965], No. 47013/66. Headings H4K and H4R. Multi frequency code signal receiver. for signals in a two-out-of-six frequency code, comprises, Fig. 1, a filter 1 selecting the relevant signal band, and an automatic gain control circuit, including variable attenuator pad 4, which brings signals above a threshold level to a predetermined level. The resulting signals are applied to six selective signal amplifier channels, e.g. 6 and 7, each comprising a filter 8, tuned to the respective signalling frequencies, an amplifier 9, a threshold circuit 10, and a rectifier 11, to produce a D.C. output signal in response to a signal of a predetermined frequency exceeding a predetermined level. The D.C. output signals are fed via delay circuits 12 to intermediate stores 13, and to a code test device 15 which produces an output only if a valid two-out-of-six combination is present for greater than a predetermined time, e.g. 20m. sec. An output from the code test device 15 is fed to the stores 13 to cause the stores to be set to their 1 condition if an output is present from the respective selective amplifier channel 6-7. A signal output from any store 13 is effective via "OR" gate 23 to change the time constant of the level control circuit 19 from a high value previous to reception of a tone signal to a low value during reception of a signal. The output of "OR" gate 23 is also effective to render the code test device 15 inoperative and to switch in a zero test device 21. The zero test device is employed to detect the end of a code signal and only responds and produces an output on line 22 when no tone signal has been detected in the selective amplifiers 6-7 for a predetermined time, e.g. 20m. sec. When the zero test device does respond it causes the resetting of all the intermediate stores 13 to their zero condition, and thereby restores the level control circuit time constant to its high value. Level control circuit, Fig. 2, comprises a transistor rectifier 18 feeding, via a smoothing circuit consisting of capacitor 39 and resistors 37 and 38, an emitter follower 33 the current through which varies the bias current of the shunt diodes 30 and 31 connected across the signal transmission path from terminals 26 to terminals 27. Transistor 39 is connected across the discharge resistor 37, which is of higher value than that of resistor 38, so that by switching transistor 39 on and off the discharge time constant of the gain control signal may be switched between a low and a high value.
Patent GB-1504788-A (GB)
Title: One-piece aluminium container for aerosols
IPC: B65D83/14
Filed: 1975-11-19
Abstract: 1504788 Portable containers BROGGI-IZAR FABBRICHE ITALIANE RIUNITE SpA 19 Nov 1975 [25 Nov 1974] 47666/75 Heading B8D [Also in Divisions F1 and B3] The mouth of a one-piece aluminium aerosol container is formed from a collar portion 5 which is thinner relative to the adjacent part of the container and which is curled around a metal or plastics reinforcing ring 7. The collar portion is thinned by turning and its junction 6 with the container body is machined to form a radiused seating for the ring.
Patent GB-953521-A (GB)
Title: Improvements to receptacles for printed circuit cards
IPC: H01R12/70
Filed: 1962-12-18
Abstract: 953,521. Mounting electrical equipment. SPERRY RAND CORPORATION. Dec. 18, 1962 [Dec. 26, 1961], No. 47696/62. Heading H1R. [Also in Division H2] Printed circuit cards, 110, are mounted in a number of holders, 40 (see Division H2), integrated to form the assembly, 41. The assembly may also be in the form of a monobloc, 41<SP>1</SP>. Insulated card guides, 112, are held in the assembly, 41, by spring clips in cavities, 54, and hold printed circuit cards in position by lugs at the top of the card guide snapping into recess, 138, in the card, 110. The assemblies 41 and 41<SP>1</SP> are secured adjacent to each other by clamping means, 43, which hold the assemblies in correctly spaced relationship so that the cards are held by channels 116 in both card guides 112 and 112<SP>1</SP>. At the end of a series of assemblies it is necessary to introduce an additional member for retaining a card guide such as a retainer, 45, which is secured by clamping means, 43<SP>1</SP>.
Patent GB-977599-A (GB)
Title: 2,3-epithio-steroids and process for preparing them
IPC: C07J71/00
Filed: 1962-12-19
Abstract: The invention comprises a 2, 3-epithio-steroid having the following partial formula: <FORM:0977599/C1/1> wherein the ripple mark represents the a - or b -configuration, and a process for the preparation thereof which comprises reacting a steroid of which the ring A is representable by the following partial formulae: <FORM:0977599/C1/2> or <FORM:0977599/C1/3> wherein R is a cyano group or a lower alkanoyl group, R1 is a hydrogen atom, a lower alkanoyl group, a lower alkylsulphonyl group, a phenylsulphonyl group or a lower alkylphenylsulphonyl group and the ripple mark represents a - or b . configuration, with a basic agent to give 2, 3-epithio-steroid of which the configuration of the epithio group corresponds to that of the sulphur-containing group in the starting steroid.  As basic agent there may be used alumina, potassium hydroxide, sodium hydroxide, potassium carbonate or sodium carbonate.  The starting compounds are obtained by reacting a 2a , 3a - or 2b , 3b -epoxy-steroid with a compound of the formula RSH wherein R is as defined above and, if desired, acylating the compounds so obtained with an acyl or sulphonyl halide.
Patent GB-1136859-A (GB)
Title: Smokers cigarette holder containing a built-in compartment in the stem, which is filled with cotton wool filter
IPC: A24F13/06
Filed: 1967-10-24
Abstract: 1,136,859. Cigarette holder. R. H. HEARN. 24 Oct., 1967, No. 48262/67. Addition to 1,094,737. Heading A2M. A cigarette holder with an integral filter comprises a hollow stem with a detachable mouthpiece, the entire hollowed stem containing cotton wool replaceably located therein.
Patent GB-1044588-A (GB)
Title: Improvements relating to milling machines
IPC: B23C1/10
Filed: 1963-12-09
Abstract: 1,044,588. Milling machines. H. DECKEL and F. W. DECKEL. Dec. 9, 1963 [Dec. 21, 1962], No. 48432/63. Headings B3B and B3K. A milling machine comprises a work-table 26 movable in three co-ordinate directions and a spindle head 32 having two parallel tool spindles 36, 38 in a plane parallel to that of the cross traverse of the table, the spindle head being tiltable about an axis parallel to the plane of the longitudinal table traverse. The cross-slide 22 can project into the gap between the machine columns 12, 14. Both spindles are driven singly or together by a motor 42 controlled from a cabinet 44. A knob 45 controls the spindle speeds. An over-arm 48 is supported by a strut 50. The over-arm 48 can be slid off a rail 46 on to a rail 52 or 54 on the tops of the columns so that it can be interchanged with a slotting-head. The machine can be used as a vertical milling machine as illustrated in Fig. 4 (not shown). The knee 18 can be raised by screw or hydraulic means.
Patent GB-1398915-A (GB)
Title: Digital indicating instrument
IPC: G01R33/07
Filed: 1972-10-20
Abstract: 1398915 Measuring Hall effect E.M.F. INSTITUT ELEKTRODINAMIKI AKADEMII NAUK UKRAINSKOI SSR 20 Oct 1972 48482/72 Heading G4H Apparatus for measuring the e.m.f. of a Hall effect device 1 having two pairs 2, 3, 4, 5 of positive and negative terminals comprises a change-over switch 6 by means of which either the first pair 2,3 or the second 4, 5 may be connected with an A.C. input 7 and the other pair to a voltage measuring device comprising A/D converter 8 and associated display 9, a device 10 being associated with the converter 8 to cause the change-over switch 6 to alternate the connections and apply the voltage across the other pair of terminals to the converter when a first measurement is completed. Initially the terminals 2, 3 are connected to the source 7 and terminals 4, 5 to the converter whereby a voltage U 1 = (E x +U p )Sin Wt is applied, where E x  is the Hall E.M.F. and U p  is an error voltage derived because the terminals 4, 5 are not connected to equi-potential points of the Hall device. This is rectified, smoothed and compared with a ramp voltage to obtain a duration-significance pulse which is digitized and stored. At the end of the pulse the circuit 10 is activated to cause switch 6 to change over the terminal pairs and the terminals 2, 3 then apply a voltage U 2  = (E x  - U p )SinWt to the converter. At the end of the digitizing interval of this second voltage, the circuit 10 stops the measuring cycle and the two measurements are added to obtain E x . A comparator circuit 11 is also provided to detect any phase inversion of the signal from the switch 6 as compared with that from source 7, and if such inversion is detected, which means U p >E x , the two measured values are caused to be subtracted.
Patent GB-1460649-A (GB)
Title: Sunscreen compositions
IPC: A61K8/81
Filed: 1974-11-08
Abstract: 1460649 Sunscreening compositions GILLETTE CO 24 Sept 1975 [8 Nov 1974] 48508/74 Heading A5B [Also in Division C3] A sunscreen composition for application to the skin comprises a solution of a modified polyvinyl butyral which contains a major proportion of acetal units and a minor proportion of units of formula (I): in which R is hydrogen or methyl, in a volatile organic solvent which is physiologically acceptable for application to the skin. The polymer, which is obtained by esterifying polyvinyl butyral (see Division C3) suitably consists of 71-83% of acetal units, 2-27% of units of formula I, 0-5% of acetylated vinyl alcohol units, and the remainder, if any, being vinyl alcohol units. The solvent may be ethanol or aqueous ethanol, and the composition may be applied by spraying from a conventional aerosol dispenser in admixture with a suitable propellant, or used as a lotion. Conventional additives such as perfumes, colouring materials and evaporation retarders may be present in the compositions.
Patent GB-1117244-A (GB)
Title: Hearing aid
IPC: H04R25/02
Filed: 1965-11-16
Abstract: 1,117,244. Hearing aids. DAHLBERG ELECTRONICS Inc. 16 Nov., 1965 [23 Sept., 1965], No. 48606/65. Heading H4J. An in-the-ear hearing aid 20 comprises a housing 21, with a front face 22, 23, 24 shaped to rest against the concha, and a cap 82 for insertion in the ear canal. The housing 21 and cap 82 are flexibly joined by a retainer (56), Fig. 7 (not shown), covered with silicone rubber (62), Figs. 1, 4 (not shown). The housing 21 is divided into compartments 25, 26, 27. In compartment 25 is a microphone 45 shock-mounted by rubber supports 47. The microphone 45 has an aperture 46 adjacent a grille 35 in the housing 21. Another aperture 37 of the compartment accommodates a volume control 40 adjustable by a wheel 42. A battery holder 52 is pivotally mounted between walls 30, 31 defining compartment 26. The battery makes contact with conductive plates 50, 51 on the walls 30, 31. The front of the battery holder 52 forms the front portion 23. The compartment 27 contains an amplifier 53 mounted on a circuit board 54. The retainer (56) is of brass, is generally cupshaped and has two opposed fingers 60, 61. The silicone rubber covering (62) includes a flexible link 65 vulcanized to an anchor plate 66 (see also Figs. 4, 6, not shown). The portion 22 of the front face comprises a cover 68 and clamp 70 (see also Fig. 4, not shown) in which the flexible link 65 is contained. An elongate receiver 74 is held by the opposed fingers 60, 61 in grooves in the cap 82. Wires 90 are provided to one end of the receiver 74 and the other end has an acoustic output aperture 75. An umbrella-shaped tip 85, acting as an ear-wax guard, has a stud 86, the end of which terminates in a ball 87. This ball is frictionally held in a double tapered aperture 83 in the end of the cap 82. The tip 85 is spaced from the end of the cap by radial protrusions 88. When inserted in the ear, the angle between the receiver 74 and the wall portion 23 of the battery holder 52 closely approximates to the angle the ear canal makes to the neighbouring surface of the external ear.
Patent GB-1463384-A (GB)
Title: Process for manufacture of phthalocyanine pigments
IPC: C09B47/10
Filed: 1974-11-11
Abstract: 1463384 Preparing pigmentary forms of polyhalogeno copper phthalocyanines IMPERIAL CHEMICAL INDUSTRIES Ltd 21 Oct 1975 [11 Nov 1974] 48627/74 Heading C4P A process for the manufacture of pigmentary forms of polyhalogeno copper phthalocyanine, prepared by halogenating copper phthalocyanine in an AlCl 3 /NaCl flux, comprises mixing the crude halogenation product and flux with more than an equal weight of water containing from 0À25-5À0% by weight of a mineral acid, adding a water-immiscible organic liquid in an amount of from 25% to 500% by weight of the polyhalogeno copper phthalocyanine to give a two layer system, the polyhalogeno copper phthalocyanine being present with the organic liquid in one layer, the other layer being an aqueous layer which is separated and discarded, washing the residual layer with water, mixing a cationic surface active agent with the residual layer, boiling the residual layer and isolating the polyhalogeno copper phthalocyanine. The mineral acid is preferably sulphuric acid and the water immiscible organic liquids are chlorinated hydrocarbons, e.g. mono-and di-chlorobenzenes and aromatic hydrocarbons, e.g. benzene, toluene or xylene. The washing step may be carried out by decantation and the organic liquid may be separated from the polyhalogeno copper phthalocyanine by direct distillation optionally under reduced pressure or by steam distillation.
Patent GB-1169905-A (GB)
Title: Improvements in or relating to Thermostatic Governor Valves Arrangements
IPC: G05D23/12
Filed: 1966-10-31
Abstract: 1,169,905. Valves. CENTRE TECHNIQUE DES INDUSTRIES DE LA FONDERIE. 31 Oct., 1966 [4 Nov., 1965; 30 Sept., 1966], No. 48770/66. Heading F2V. A thermostatic valve suitable for controlling the flow of coolant liquid, e.g. for metal casting moulds, comprises an inlet chamber 4 and an outlet chamber 5 which are in communication through a valve 18. A temperature sensing bellows 10 in the inlet chamber communicates with an operating bellows 9 in an isolated chamber 6, through a fixed partition 12. Both bellows are filled with a gas having a high expansion coefficient. Bellows 9 operates the valve against a spring 32, through plunger and lever 36, 37. In order to maintain a system temperature in the valve at all times, a restricted by-pass (30, 31), Fig. 3 (not shown) is provided, adjustable by a valve (33). The loading spring 32 is adjustable by a knob 43 connected through an epicyclic gear 34, 46, 48 with a pointer (49), Fig. 2 (not shown) to give a magnified indication of the movement. In another embodiment, Figs. 5 and 6 (not shown) a temperature responsive bellows (9) which is connected directly to the valve (58) is housed in a chamber (63) between the inlet (55) and outlet (6). A high loss circuit consisting of passages (65) and an annular passage (66) is interposed between the valve and the chamber (63) and there is a large bore passage from this chamber to the outlet. The chamber is thereby maintained substantially at atmospheric pressure so that the bellows is sensitive only to temperature. A restricted passage (77) which by-passes the valve is adjustable by a screw (73). A spring chamber (71) is drained in the event of leakage through this passage.
Patent GB-1374624-A (GB)
Title: Electrical filters enabling independent control of resonance or transition frequency and of band-pass especially for speech synth esizers
IPC: G10L25/00
Filed: 1971-10-21
Abstract: 1374624 Active filters; speech synthesizer AGENCE NATIONALE DE VALORIZATION DE LA RECHERCHE 21 Oct 1971 [30 Oct 1970] 49060/71 Addition to 1308636 Headings H3T H3U and H4R  An electrical filter enabling independent control of resonance frequency and of bandwidth comprises an amplifier 1 of gain G whose input is connected to two impedances 3, 4 of a first type which are arranged in series with respect to the said input, have adjustable values and are such that the ratio between the value of the impedance 3 connected directly to the input of the amplifier 1 and the value of the other impedance 4 is equal to a, said amplifier being provided with a negative feedback loop between its output and the junction between the two impedances 3, 4 of the first type, two other impedances 9, 10 of a second type which have adjustable values being respectively arranged in the negative feedback loop and shunted with respect to the input of the amplifier 1, being such that the ratio between the value of the impedance 10 which is shunted with respect to the input of the amplifier and the value of the other impedance 9 is equal to b, characterized in that at least one of the two ratios a and b is substantally different from 1 and that the ratios a and b and the gain G are connected by the relationship  In the embodment shown, the impedances 3, 4 comprise resistors and the impedances 9, 10 resistors shunted by capacitors. In a second embodiment (Fig. 2, not shown) these are interchanged and the arrangement is located in the feedback path of a second amplifier (20).
Patent GB-491249-A (GB)
Abstract: 491,249. Levelling ground. ONIONS, J. A., ONIONS, C. H., ONIONS, G. F., and ONIONS, J. E., (trading as ONIONS & SONS). Feb. 26,1937, No. 5766. [Class 68 (i)] In a ground-levelling appliance adapted to be reciprocated by fore-and-aft cables attached to winches, the forward cable passes from its winch around a drum or pulley rotatable about a vertical axis on the appliance and back to a fixed point on the haulage engine, and means are provided for operating part of the appliance by power taken from the drum or pulley. As shown, the main frame A is supported on wide, coaxial, rear rollers b, and on a wide front roller C supported by a turntable c<2> rotatable for steering by means of a hand wheel c<7> and worm gearing. The scoop E, arms f<1> carrying a front apron F, and arms G carrying a blade g<6> are pivoted to the main frame at e, f2 and g<3> respectively. forward of the main frame is a pulley j<1> adapted to be driven by the forward haulage rope M which passes from an anchorage on the forward engine round the pulley j<1> to its winch. Through lever k<2>, link k<1> and screw K, Fig. 4, a clutch surface j<3> on a drum j<4> may be forced into driving engagement with the pulley j<1>, a cable N, passing from the drum over pulleys n, n<2>, g<7>, h<2>, g<7> to an anchorage n<3>, then raising the arms G and blade g<6>; on releasing the screw K, a spring j<9>, adjustable by a screw j<10>, forces a coned surface j<5> on the drum j<4> into engagement with a coned brake surface ,j<b> to hold the parts. The rearward haulage rope P passes over pulleys p<1>, h<1>, h<3>, e<2>, h<3>, f<4> to an anchorage h<4> so that on first winding in the rope P, the scoop E and apron F are raised ; a chain &c. connected between the rope P and the rear of the main frame then provides a direct pull on the latter and relieves the strain on the pulleys. According to the Provisional Specification, certain of the features of the invention are applicable also to appliances adapted to be drawn by a tractor.
Patent GB-1528208-A (GB)
Title: Method and apparatus for controlling the torque applied to a vehicle wheel
IPC: B60T8/17
Filed: 1975-12-02
Abstract: 1528208 Braking systems KNORR-BREMSE GmbH 2 Dec 1975 [31 Dec 1974] 49540/75 Heading F2F [Also in Division B7] A (rail) vehicle wheel anti-lock device B is associated with a device which applies sand (or like particulate friction providing material) to the wheel if the wheel does not start to accelerate within a waiting time #T interval commencing with the operation of the antilock device. Fig. 1 shows a flow diagram of apparatus for . carrying out the invention for a rail vehicle. If during braking, wheel slip exceeds a predetermined value, which may be velocity-dependent, the device B generates a speed-comparison signal D which controls solenoid valves for bringing about brake release. On receipt of the signal D a comparator device #V determines whether the vehicle velocity is above a predetermined value and if so the waiting time #T commences. Immediately prior to or during waiting time #T, wheel deceleration is tested to see whether it has exceeded a predetermined value and if this condition is satisfied then the device W tests whether the wheel deceleration becomes negative within the waiting time #T, i.e. whether the wheel is again accelerated. If however the wheel is not re-accelerated and wheel deceleration continues indicating poor adhesion, then sanding is effected by a device S for an adjustable period of time-if the vehicle velocity falls below the predetermined value, sanding is immediately terminated. It is envisaged that instead of the speed comparison signal other signals derived from the anti-locking device may be used as an input variable for the sanding device, e.g. acceleration signals, or the brake release signal.  Fig. 2 illustrates a block diagram of an apparatus of the invention, including an input divider 1 to calibrate a signal G proportional to wheel velocity which is then supplied to a comparator 6 and to a "steep discharge" 2 which provides a wheel speed proportional voltage which is then differentiated in a circuit 3. A comparator 4 tests whether the sign of the acceleration signal, and comparator 6 tests whether the wheel (vehicle) velocity is above the predetermined value-if so a signal is supplied to monostable flip-flops 7, 8 the switch on duration of flip-flop 7 representing the waiting time. A logic circuit 5 can thereby generate a sanding signal to control a flip-flop 9 which determines the sanding duration, the sanding signal being amplified in a driver 10 to control sand-strewing elements, e.g. solenoid valves. Figs. 3a, 3b (not shown) illustrate the detailed electronic make-up of the blocks of Fig. 2. The Specification envisages the invention as also covering the possibility of a sanding device being associated with an anti-spin device which reduces drive power in the event of wheel spin, sanding being initiated subsequently if necessary during a waiting time.
Patent GB-1206777-A (GB)
Title: Explosives
IPC: C06B31/20
Filed: 1967-11-01
Abstract: 1,206,777. Explosive compositions. POUDRERIES REUNIES DE BELGIQUE S.A. 1 Nov., 1967 [31 Jan., 19671, No. 49574/67. Heading C1D. A coal mine safety explosive comprises nitroglycerine, nitroglycol, or a mixture thereof; ammonium chloride and sodium or potassium nitrate; silica, a metallic soap, or a polysaccharide as a waterproof additive; and 4 to 15% by weight of ammonium oxalate. The explosives have a greater power, and a lower oxygen balance, compared with similar compositions not containing ammonium oxalate.
Patent GB-1383172-A (GB)
Title: Refrigerator door assembly
IPC: F25D23/02
Filed: 1971-10-26
Abstract: 1383172 Door panels L E C REFRIGERATION Ltd and C W F LONGMAN 24 Oct 1972 [26 Oct 1971] 49697/71 Heading E1J A door, e.g. for a refrigerator, comprises an inner lining 1 spaced from an outer panel 4, caps 5 at the top and bottom closing the space, a gasket 9 secured around the door lining and foamed thermal insulation 16 in the space. The side edges of the door are closed by flanges on panel 4. Caps 5 have flanges 6, 7 engaging over the panel 4 and a bead 8 abutting gasket 9. A portion 10 of the gasket has a lug 11 and is held behind flange 2 on the lining by flange 6 of the cap 5 and by the filling 16. The outer part of the gasket is hollow reinforced and has a slot 13. The filling 16 of polyurethane is injected and expanded in situ. Panel 4 is metal, lining 1 is plastics.