baber/WOPTO huggingface dataset:
Patent GB-903195-A (GB)
Title: Battery charging systems
Inventor: SUTHERLAND WILLIAM DRUMMOND
IPC: H02J7/14
Filed: 1959-12-02
Abstract: 903,195. Battery charging systems for vehicles. C.A.V. Ltd. Jan. 11, 1961 [Dec. 2, 1959], No. 40918/59. Class 38 (4). When a switch 8 is closed in unison with a vehicle ignition switch and the output from the vehicle D.C. generator 1 is zero, current will flow from the vehicle battery 4 through a warming circuit comprising a suitably polarized diode 7 and a warning lamp 6, but will thus be illuminated. When generator 1 is driven, its output voltage will rise and when this has exceeded a predetermined voltage, charging current will pass to the battery through a silicon diode 5 oppositely polarized to the diode 7, and a resistor 9, so that the voltage developed across the diode 5 and the resistor 9 is sufficient to prevent the diode 7 conducting and hence extinguish the warning lamp 6. The resistor 9 may be constituted by the current winding of a voltage regulator, a fuse or an ammeter.
Patent GB-871994-A (GB)
Title: Improvements relating to stereophonic sound transmission systems
Inventor: PERCIVAL WILLIAM SPENCER
IPC: H04S1/00
Filed: 1957-07-06
Abstract: 871,994. Stereophonic transmission systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 4, 1957 [July 6, 1957], No. 41056/59. Divided out of 21465/57 and 871,992. Drawings to Specification. Class 40 (4). In a stereophonic sound reproducing apparatus, for use in a transmission system as described in Specification 871,992 in which there is transmitted an audio-frequency signal representative of sounds and a control signal which is representative of the directions or positions of the sources of the sounds and is substantially independent of the loudness of the sounds, two further signals representative of the sounds as received from different directions or at different positions are derived by multiplying the audiofrequency signal by the control signal to obtain one further signal and subtracting this further signal from the audio-frequency signal to obtain the other, and the two further signals are fed respectively to two spaced loud-speakers. The description is identical with that of Specification 871,992 which relates to Fig. 3 thereof.
Patent GB-1221939-A (GB)
Title: Battery charging systems
Inventor: PHOENIX LANCELOT
IPC: H02P9/48
Filed: 1967-09-11
Abstract: 1,221,939. Automatic voltage control. JOSEPH LUCAS (INDUSTRIES) Ltd. Aug.23, 1968 [Sept.11, 1967], No.41299/67. Heading G3R. A voltage regulator for a permanent magnet alternator includes thyristors controlled in dependence upon a first input signal derived from changes in the rectified output of the alternator and further comprises a control circuit providing a second input signal which overcomes the first signal initially so that the regulator reacts to changes in the first input signal only after a delay. As shown, an alternator 11 supplies a battery 33 by way of output lines 14, 15 and a full wave rectifier including thyristors 12 and diodes 13. Triggering pulses for the thyristors 12 are produced by an oscillator including transistors 19, 22 in dependence upon a first input derived from a voltage divider 16, 17 connected across the output lines 14, 15, the thyristors being thus controlled to maintain the output voltage constant. Also associated with the voltage divider 16, 17 is a control circuit including a transistor 36 and a capacitor 37 which provide a second input to the regulator at the junction of resistors 16 and 17. This second input is arranged to decrease when the first input increases and to increase when the first input decreases. The rate of change of the second signal is less than that of the first signal by virtue of the provision of capacitor 37; thus, the effect is such that changes in the first input signal do not immediately cause the regulator to react, and the Specification explains how this delaying action helps to reduce noise in the operation of the alternator. A full wave rectifier using diodes only may be employed in the system, the thyristors being arranged to short-circuit one set of diodes when the thyristors conduct, in which case the thyristors are required to be 'off' for an output to be produced rather than 'on' as in the first embodiment.
Patent GB-1487831-A (GB)
Title: Prestressed structural unit
IPC: E04C3/22
Filed: 1974-09-24
Abstract: 1487831 Post-tensioned concrete PARAISTEN KALKKI OY-PARGAS KALK AB 24 Sept 1974 [25 Sept 1973] 41568/74 Heading E1W A post-tensioned beam or slab comprises a number of units (e.g. E 1 , F,) arranged end-to-end, at least one intermediate unit, e.g. E 1 , having a straight, enclosed duct, e.g. e14, therethrough and an end unit, e.g. F 1 , having a duct, e.g. f14, adjoining the straight duct e14 but deviating in direction from that of the straight duct. Preferably the ducts are circular in the intermediate units, and widen out at their ends into a rectangular or square form (at 8). The beams may have different longitudinal elevational profiles. In the three lowest ducts of the embodiment shown 0.5 mm. dia. steel wires may be employed, with 5.0 mm. dia. rods being employed in the upper two ducts.
Patent GB-1246182-A (GB)
Title: A method of and apparatus for breaking-up solid, porous and especially vegetable bodies
IPC: A23N1/02
Filed: 1969-08-21
Abstract: 1,246,182. Decorticating and reducing seeds. CENTRE STEPHANOIS DE RECHERCHES MECANIQUES HYDROMECANIQUE & FROTTEMENT. 21 Aug., 1969 [21 Aug., 1968; 16 July, 1969], No. 41722/69. Heading A2Q. [Also in Division B2] Seeds or other solid, porous and particularly vegetable bodies are broken up, e.g. are decorticated, shredded or split, by vibration induced by applying a cyclic variation of fluid pressure in a chamber which contains the bodies and is filled with a liquid and/or gaseous fluid. A minimum of 3 cycles, and a difference between maximum and minimum pressure greater than 3 bars, is used. In practice, complete decortication of a batch of seed may require about 150 cycles each having a pressure difference of 400 bars, the pressure difference required being reduced if more cycles are used as indicated on a graph (Fig. 2, not shown). The pressure is preferably varied such that the rate of decompression is higher than the rate of compression (Fig. 1, not shown). In the embodiment of Fig. 3, seeds C are placed in a container 10 of cylindrical form containing a piston 14 which, by means of a connected piston 15 is a double-acting fluid pressure motor chamber, is caused to oscillate longitudinally, under control of a reversing valve 17. The motor piston 15 may be replaced, in a second embodiment (Fig. 4, not shown) by a driven cam and follower arrangement, wherein the cam (19) is profiled to give the desired relatively slow compression and quick decompression. In a third embodiment (Fig. 5, not shown) a diaphragm chamber contains the seeds, the diaphragm (22) being oscillated by a fluid pressure motor as in the first embodiment. A fourth embodiment (Fig. 6, not shown) dispenses with a piston or diaphragm and instead uses a servomotor to generate fluid pressure oscillations. The embodiment of Fig. 7 utilizes a series of cartridges 34 which are fired in turn by cams on a cam shaft 35 to generate a series of compressions, the intensity of which is limited by a safety valve 33. The remaining embodiment, Fig. 8 (also Fig. 9, not shown) provides for sudden decompression, following compression of gas in a chamber 10 by supply of fluid via line 41, through the rupturing, at a predetermined pressure, of a foil sheet 42 held against a seating 44 by a jack 45, the seeds C being retained in the chamber by a screen 58. After each rupturing of the sheet fluid pressure is released from the jack and from a second jack 48, causing associated springs to release the pressure on the foil and drive, through rack and pinion and ratchet gear, a pulley 46 to which the foil is attached, whereby the foil is advanced to place a fresh area in position for a subsequent rupturing cycle. The cycles are initiated by a time clock 53 operating solenoid valves 52, 55, the latter via a delay device 54 in the supply to jacks 45, 48 and to. the chamber 10, respectively.
Patent GB-949508-A (GB)
Title: Improvements in or relating to radar systems
Inventor: WELLS EDWARD MARSHALL
IPC: G01S13/87
Filed: 1960-12-05
Abstract: 949,508. Radar. MARCONI CO. Ltd. July 24, 1961 [Dec. 5, 1960], No. 41746/60. Heading H4D. In a radar system in which the target is " illuminated " by two or more directionally transmitted beams of different radio frequencies, the beams are directed at an angle to one another. Fig. 1 shows an embodiment utilizing two beams of frequencies (f 1 ), (f 2 ) derived from respective sources 1, 2 and supplied via amplifiers A1, A2 to respective directional aerials 3, 4 set at an angle of about 7.2 degrees to each other and rotating as a unit in the direction TA at e.g. 60 r.p.m. and for reception of reflected energy similarly directed aerials 5, 6, associated respectively with the frequencies (f 1 ) (f 2 ) and rotating at the same speed and in the same direction are employed. The signals received by the latter aerials are converted in mixers 7, 8, co-operating with local oscillator 9 to a common frequency and the output from mixer 7 fed via a device 10 (which may utilize a magnetic recording), introducing a delay equal to the time taken for the aerials to sweep through their angle of separation (i.e. about 20 millisecs.), to a mixer 11 together with the output of mixer 8 to produce the difference frequency f 1 -f 2 , the phase of which depends on the range of the target. The latter signal is then squared and limited in 12 and differentiated in 13 to provide " bright-up " pulses for a P.P.I. display tube 14, the radial deflection of which is produced by conventional means. For producing the circular trace on tube 14, signals from source 1 are fed via a delay device (similar to device 10) to a mixer 16 in which they are combined with signals supplied directly from source 2 and the combined signals, after limiting and squaring in 17 and integration in 18, are fed to a resolver 19 from which mutually perpendicular co-ordinate outputs are derived and fed to deflection plates P1 and P2. One or more of the beams may be modulated (e.g. by a sawtooth wave) to derive range and/or velocity information.
Patent GB-920053-A (GB)
Title: Improvements in television video frequency amplifiers
IPC: H04N5/16
Filed: 1961-11-23
Abstract: 920,053. Television. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Nov. 23, 1961 [Nov. 23, 1960], No. 41921/61. Class 40 (3). The last stage 10 of a transistorized videofrequency amplifier has a D.C. restoration device connected to its input, said device comprising a transistor 7 which also provides negative feedback to the stage, the feedback circuit including a diode 13 which renders the feedback circuit operative only during the duration of the synchronization pulses S. The transistor 5 is PNP and the transistor 7 NPN. During each image signal I the diode 13 is cut-off. During the synchronization pulses S the diode 13 conducts and the D.C. level detected by the capacitor 16 and resistor 14 and amplified by the transistor 7 is re-inserted in the base of amplifier 5. The synchronization pulse S also appears at the collector of the transistor 7.
Patent GB-1017134-A (GB)
Title: Generator voltage regulating apparatus
IPC: H02J7/28
Filed: 1962-11-06
Abstract: 1,017,134. Automatic control of voltage. HITACHI SEISAKUSHO KABUSHIKI KAISHA. Nov. 6, 1962 [Nov. 6,1961(2)], No. 41988/62. Heading G3R. A generator G supplying power to a load across terminals K, L has a main field winding F1, a cumulative winding F2 and a differential winding F3. Voltage error signals are derived from a comparison device 1, comprising a bridge network having a Zener diode in one arm, as opposed signals one of which increases with error while the other decreases. A phase-adjusting element 3, composed of capacitors and a transisterized controllable impedance device, is charged by a constant period pulse from a blocking oscillator 2 and the discharge time is varied by the controllable-impedance device in dependence on one of the voltage error signals. The other voltage error signal varies a controllable impedance device 4 to determine a reference level of a determination element 6 of a field regulating device. The determination device comprises a Schmitt trigger circuit which changes state at a point in the oscillator cycle when the variable reference level from device 4 is equalled by the voltage from phase-adjusting element 3, discharging at a variable rate. The voltage error signals varying their respective controllable impedance devices to cause a cumulative effect on the point in the oscillator cycle at which the Schmitt circuit charges state. The determination device 6 controls regulating devices 7, 8,comprising controlled semi-conductor rectifiers, respectively in series with the cumulative and differential field windings, so as to maintain the generator output voltage constant by repetitively switching the devices 7, 8 on and off, so that the cumulative field winding F2 is energized when the differential field winding F3 is unenergized and vice-versa.
Patent GB-873031-A (GB)
Title: Improvements in or relating to devices for the delivering into a container a meteredmixture of granular materials
IPC: B28C7/04
Filed: 1958-12-30
Abstract: 873,031. Delivering measured quantities of granular materials. SOC. D' ETUDES ET DE RECHERCHES INDUSTRIELLES SOTREMA. Dec. 30, 1958 [Jan. 13, 1958; April 30, 1958], No. 42046/58. Classes 106(5) and 143 [Also in Group XXX] Apparatus for feeding a container with a mixture of solid substances, such as the components of concrete, consists of a plurality of bins containing the components and, mounted on rails below the bins, a metering hopper which may receive a known quantity from each bin and deliver the mixture to a container. The rails are downwardly inclined from the position in which the hopper lies under the first bin and the hopper, when empty, is held in this position by a cable and counter-weight. As shown in Fig. 1, the cable 12 is attached at one end to the carriage 8 of the hopper 7 and is wrapped round a drum 13 around which is also wrapped the cable 12awhich may be an extension of cable 12 or a separate cable-extending over the pulley 15 to the counterweight 16. A brake drum 14 attached to the drum 13 is retainable by the band 17 actuated by lever 18 so as to allow the laden truck to move, under control, down the rails. As illustrated stopping of the hopper under each bin in turn is manually effected but automatic means such as stops or catches may be provided. At the lower end of the rail (in the case illustrated, when in position under bin 2), the hopper overlies the container 10 to be loaded. The whole apparatus may, as shown, be mounted on wheels carried by axles 4. The metering hopper may either be fitted with weighing means such as the steelyard 19 or be mounted on a mechanical, hydraulic or electric load cell: alternatively it may meter the contents volumetrically. In the latter case, the hopper is divided into compartments each of which is positioned during the loading operation under the appropriate bin. To allow adjustment of both the proportions of the mixture and of the total quantity delivered, the compartments are defined by partitions such as 31, 32 (Fig. 8) pivoted at 34 and settable in different positions by means of the angle members 43, 44 engageable with the slotted segment 45. As shown the hopper is adapted to receive volumes V 1 , V 2  respectively of material from the bins 1 and 2 of Fig. 1. Discharge of the hopper contents is achieved by the opening of shutter 7a by means of the linkage system of levers 21, 22 (Fig. 5) operable on rotation of shaft 23. This shaft carries at one end a fork (not shown) which engages a crankpin carried by a shaft fitted with a hand lever, the latter shaft being mounted on the main frame of the apparatus in such a position that the hopper shutter can only be opened when the hopper is in the correct unloading position.
Patent GB-1167252-A (GB)
Title: Quick Change Chuck
Inventor: BENJAMIN MILTON LLOYD
IPC: B23B31/113
Filed: 1967-09-18
Abstract: 1,167,252. Chucks. ERICKSON TOOL CO. 18 Sept., 1967 [27 Feb., 1967], No. 42405/67. Heading B3B. A quick change chuck comprises a holder 1, a tool adapter 8 having a flange 10 which is slotted at 9 so as to interfit with an axially projecting key 3 on the holder, a nut 5 threaded on the holder and having a lug 6 which may overlap the key 3 to allow insertion of the tool adapter and which on rotation of the nut bears on the flange 10 of the adapter to clamp it in the holder, the nut carrying a release member 12 which has a shoulder 11 adapted to bear on the rear face of the flange 10 to release the adapter from the holder when the nut is rotated in the opposite direction. The member 12 has a flat 17 adapted to engage one of the keys 3 to locate the lugs 6 over the keys for insertion of the adapter. The member 12 is positioned by an adjusting screw 24 and locked in the nut by a screw 20. The tool adapter may, as shown, have a bevel closing collet 14 and the holder may have a tapered shank 2 or alternatively a flange or other fitting for attachment to a machine tool.
Patent GB-1298093-A (GB)
Title: A process for the preparation of controlled portions of a food product
Inventor: ROGERS ALAN BARDE
IPC: A23L29/281
Filed: 1970-09-04
Abstract: 1298093 Food product ARMOUR & CO 4 Sept 1970 [8 Sept 1969] 42452/70 Headings A2B and A2D A process for making controlled portions of a food pioduct which is normally liquid in its uncooked state, comprises incorporating at least 0.5% by weight of gelatin into a liquid uncooked food product, which is a pancake batter or an egg batter, placing said product into a mould and chilling to a temperature sufficiently low to cause the food product to set. The set food product is then apportioned.
Patent GB-948468-A (GB)
Title: Venetian blind with remote control
IPC: E06B9/326
Filed: 1960-12-13
Abstract: 948,468. Venetian blinds. HUNTER DOUGLAS INTERNATIONAL CORPORATION. Dec. 13, 1960 [Dec. 18, 1959], No. 42913/60. Heading E1J. In a venetian-blind remote control assembly a locking device 23 for the lift cords 18 and 19 to hold the slats at any desired height is disposed at a distance from the cord guiding device 10 and in a direction angularly related to the plane of the blind. The tilting cords 8, 9 pass around a drum 7 geared through a worm and gear 4, 5 to a shaft 3 mounting the bit rollers 2, and are guided through the side of the head rail 1 by a pair of rollers 12, 13. The lift cords 18, 19 are guided by rollers 16, 17, and additional lift cords may be guided by the third pair of rollers, the pairs of rollers being arranged in different vertical planes.
Patent GB-1479194-A (GB)
Title: Method for the coating of a shaped article of hardenable plastics material
IPC: B29C37/00
Filed: 1974-10-03
Abstract: 1479194 Coating articles in a mould MESSERSCHMITT - BOLKOW - BLOHM GmbH 3 Oct 1974 [10 Oct 1973 6 July 1974] 42965/74 Heading B5A A method for coating a shaped article of hardenable plastics material comprises the steps of (a) coating the wall of a female mould, corresponding to the shape of the article, with a uniform layer of powder and agglomerating the powder, (b) applying the unhardened article to the agglomerated layer and heating to harden the article and bond the powder to the article, and (c) providing the thus-coated article with a further coating of metal, lacquer or varnish. If desired, the hardened coated article obtained in step (b) may be combined with a metal article and the combination subjected to coating step (c). The powder layer may comprise a metal or colouring agent in a binder. The hardening in step (b) may be performed under pressure.
Patent GB-1119003-A (GB)
Title: Electric analogue signal multiplier
IPC: G06G7/16
Filed: 1965-10-11
Abstract: 1,119,003. Multiplying circuits. NORTHERN ELECTRIC CO. Ltd. 11 Oct., 1965 [10 Nov., 1964], No. 42967/65. Heading G46. [Also in Division H3] A circuit for multiplying alternating signals comprises identical transistors Q 1  to Q 4  of which Q 1  Q 2 , Q 3  Q 4  have their emitters interconnected to the collectors of transistors Q 5 , Q 6 , whose emitters are returned over resistors R 1 , R 2  to the negative of centre grounded battery B; and Q 1 , Q 3  and Q 2 , Q 4  have their collectors interconnected to load resistors R L1 , R L2  and capacitance coupled to output terminals 8, 10; the load resistors being returned to the positive of a centre grounded battery B. A secondary centre tapped transformer T 1  energized from input signal V a  excites in antiphase the interconnected bases of Q 1 , Q 4  and the interconnected bases of Q 2 , Q 3 , while a secondary centre tapped transformer T 2  energized from input signal Vb excites in antiphase the bases of transistors Q 5 , Q 6  in superimposition on a bias from voltage divider network R 3 , R 4  holding Q 5 , Q 6  at the mid-point of their linear operating range. Similarly the circuit parameters are chosen so that the bases of Q 1  to Q 4  are biased so that these transistors operate about the middle of their exponential operating range. It is shown by mathematics that output voltage e o  = K<SP>1</SP>V a V b  where K<SP>1</SP> is a constant. In a modification (Fig. 4, not shown) input V a  may be unbalanced and applied direct to the bases of Q 1 , Q 4 , while the bases of Q 2 , Q 3  are held at a fixed bias, and the output e 0  is derived from a centre tapped primary output transformer. In a further modification (Fig. 5, not shown) the transistors are replacable with triodes, and specifically transistors Q 5 , Q 6  are replacable with pentodes. Field effect transistors may be employed.
Patent GB-1411793-A (GB)
Title: Scanning electron microscope
IPC: H01J37/04
Filed: 1972-09-18
Abstract: 1411793 Electron microscopes NIHON DENSHI KK 18 Sept 1972 [21 Sept 1971] 43200/72 Heading H1D A scanning electron microscope which may be employed also to provide the diffraction pattern accurately corresponding to a selected area of the microscope image includes, in addition to the normal microscope scanning arrangement 11X, 11Y, and field limiting aperture 17 insertable between lenses 5 and 6 for operation in the diffraction mode, a second scanning arrangement 19X, 19Y upstream of the position of the field limiting aperture. In the microscope mode, only scanning coils 11X, 11Y are employed, and the lenses are adjusted to focus the beam on the specimen (Fig. 1, not shown). To exhibit the diffraction pattern of a selected area of the specimen surface, the field limiting aperture 17 is inserted, the scanning signal generator is disconnected from scanning coils 11X, 11Y and connected to scanning coils 19X, 19Y to scan the beam over the aperture, and lenses 5 and 6 are adjusted to focus the beam on the surface and give a microscope image of an area of the specimen which is defined by the aperture 17, Fig. 3. The diffraction pattern of that area of the specimen is then obtained by disconnecting the scanning coils and adjusting lens 5 to give a parallel beam incident upon the specimen, Fig. 4. In another embodiment, in which transmitted electrons incident upon a detector aperture positioned beneath the specimen are employed to form the microscope display, the diffraction display is produced by scanning the complete diffraction pattern across the detector aperture by means of a further set of scanning coils (23X, 23Y, Fig. 6, not shown) positioned between the specimen and the detector. In a further embodiment (Fig. 7, not shown) the microscope scanning coils 19X, 19Y are employed, in the diffraction mode of use, to vary, cyclically, the azimuth angle of incidence of the beam on the specimen.