baber/WOPTO huggingface dataset:
Patent GB-546132-A (GB)
Title: Improvements relating to the generation of frequency modulated electrical oscillations
IPC: H03C3/40
Filed: 1941-02-13
Abstract: 546,132. Frequency modulation. COSSOR, Ltd., A. C., and BELL, D. A. Feb. 13, 1941, Nos. 1998 and 15519. [Class 40 (v)] A frequency modulated wave is produced by modulating the relative amplitudes of two waves of different frequency and combining these waves in a non-linear conductor. The two waves may themselves be produced as sum and difference frequencies derived from two original generators. In Fig. 1, one wave is generated in the tuned circuit 1 by its connection to the triode portion of a triode-hexode valve 3, this wave being modulated in amplitude by signal voltages 4 applied to a grid of the hexode. The other wave is produced in the valve 8 and is unmodulated, the two waves being mixed in the filter 9 which passes both waves to a limiter 10. The output filter 11 passes only a limited range of frequencies on either side of the mean frequency of the two waves, and eliminates the two original wave frequencies. The frequency of the wave at the output terminals 12 varies linearly with the modulating voltage 4 over a limited range. In Fig. 2, a wave from a source 20 is applied in phase quadrature to the inner grids of two hexode mixer valves 21, 23 and a wave of different frequency from a source 24 is similarly applied to the outer grids. The output waves are combined additively in circuit 33 and subtractively in circuit 30, and produce respectively a difference and a sum frequency in those circuits. The two frequencies are amplitude-modulated in opposite phase in modulators 59, 49 by a signal derived from 51<SP>1</SP>, and are combined in a filter 51 and limiter 52 to produce a frequency-modulated output, having a mean frequency equal to that of the source 20 and a frequency swing dependent on the frequency of the source 24. Waves of the mean frequency may be added to the output by a lead 54 from the source 20. In the first Provisional Specification switching means are described for applying the signal modulation in the same phase to the respective waves and for simultaneously shortcircuiting the limiter, so that the circuit may be used alternatively for transmitting an amplitudemodulated wave at the mean frequency of the two waves.
Patent GB-226987-A (GB)
Title: An improved roller-mounting for the sliding doors of show cases and the like
IPC: E05D15/06
Filed: 1924-01-25
Abstract: 226,987. Whitley, J., and Batty, S. Jan. 25, 1924. Rectilinear-motion bearings. - Roller bearings for sliding doors 3 of show cases &c. consist of pairs of rollers mounted on spindles 5 in the baseboard, provided with three bearing discs 6. The spindles are retained in the baseboard by cover plates 8.
Patent GB-601023-A (GB)
Title: Improvements in or relating to the extraction and utilisation of heat from air or vapour
IPC: F28D21/00
Filed: 1945-01-26
Abstract: 601,023. Heating and cooling air. SULZER FRERES SOC. ANON. Jan. 26, 1945, No. 2108. Convention date, May 29, 1943. [Classes 64(i) and 64(iii)] [Also in Group X] An apparatus for extracting heat from used air or vapour comprises two heatexchangers through which the used air passes in succession, the first heatexchanger 3 serving to transfer heat to fresh air, the second 5, 6 to a liquid, e.g. water employed in the operation of plant. The used air enters at 1 and after being drawn through the heat-exchangers, by a fan 7, may be rejected to atmosphere, via the passage 8, or part may be diverted via passage 9 and either led via pipe 10 to the point 12 where it is mixed with the warmed fresh air, or passed directly via pipe 17 into the room to be heated. Part of the used air issuing from the first heat-exchanger 3 may be delivered to the fresh air. The fresh air, with the cooled used air if any, is delivered from the passage 14. The second heatexchanger, (see Fig. 3) comprises strips of twisted metal 34 suspended from pipes 33 in which flows the liquid to be heated. This liquid passes through holes in the top of the pipes and travels down both sides of each strip to collect in sumps 19 and 22. The liquid may be pumped from sump 19 to the top of the second half 5 of the heatexchanger, or the two parts may be placed on top of each other. The strips of metal are mutually staggered, and placed in the path of the used air.
Patent GB-816602-A (GB)
Title: Improvements relating to fluid control valves
Inventor: SELWOOD GEORGE
IPC: F16K39/04
Filed: 1955-01-24
Abstract: 816,602. Valves. FAIREY AVIATION CO. Ltd. Jan. 18, 1956 [Jan. 24, 1955], No. 2109/55. Class 135. A multiple-way rotary disc valve has its ports so arranged, e.g. symmetrically, that the movable disc member does not tend to tilt. The movable member comprises two telescoped sleeves 11, 12, Fig. 1, located between two platens 7, 8 in a casing formed by a body member 1 fixed by screws to a base 4. The platens 7, 8 are spaced by a spacer member 9. The valve operating spindle 5 is mounted in bearings in the platen 7 and body 1 respectively. The sleeve member 12 is centred by an internal rib 18 of the spacer member 9. The body 1 has a highpressure inlet 29 and a low-pressure inlet 31. The spacer 9 has openings 27 and the upper surface of the platen 8 has notches 32 so that high pressure is admitted to the upper surface of the platen 8, to the lower end surface of the sleeve 11  and to the upper end surface of the sleeve 12. The platen 8 is thereby urged downwardly and the sleeves 11, 12 are urged apart. The lower surface of the sleeve 12 and the upper surface of the sleeve 11 may be relieved as at 33 to reduce the pressure of the sleeves on the platens. A circular leaf-spring 34 urges the sleeves 11, 12 apart when the pressure is cut off. The platen 7 has two pairs of diametrically opposed working ports 36, 37 of equal size. The ports 36, 37 are connected by liners to passages 39, 38 respectively in the block 4. The two passages 38 are interconnected by a transverse passage 43, Fig. 2, and the two passages 39 by a transverse passage 44. The passages 43, 44 are connected by radial passages 45, 46 to inlet and outlet pipe connections 47. The sleeve 12 has a pair of identical diametrically opposed high-pressure ports 49, Fig. 3, and two pairs of identical diametrically opposed low-pressure ports 51. In the central position of the valve each highpressure port 49 is situated between two working ports 36, 37 and the low-pressure ports 51 are just clear of the working ports 36, 37. Slight clockwise movement of the sleeves 11, 12 will bring the high-pressure ports 49 into register with the working ports 36 and one pair of lowpressure ports 51 into register with the working ports 37. Slight counter-clockwise movement of the sleeves 11, 12 brings the high-pressure ports 49 into register with the working ports 37 and the other pair of low-pressure ports 51 into register with the working ports 36. The valve laps are so arranged that the high-pressure ports 49 communicate with the working ports 36 or 37 before the low-pressure ports 51 do.
Patent GB-397487-A (GB)
Title: Improvements relating to combustion-chambers of internal combustion engines and the arrangement of valves and sparking-plugs therein
IPC: F02F1/36
Filed: 1932-01-23
Abstract: 397,487. Cylinders. REIF, W. M., 3, Ferstelgasse, Vienna. Jan. 23, 1932, No. 2140. [Class 7 (ii).] In a side-valve engine the combustion chamber is such that minimum clearance is provided between the upper surface of a valve head and the roof of the chamber when the valve is fully opened ; a higher compression ratio is thus possible, and thermal stress in the valve is reduced. The roof may be recessed as at 4 to receive the valve head 2, the side walls of the chamber being preferably contracted up to the valve head at b for a quarter of the circumference of the valve and have grooves 5 for deflecting the gas, these grooves extending well into the main part of the combustion chamber ; the upper and lower'edges of the valve seats are preferably rounded. The sparking plug socket is formed in the contracted part b adjacent an inlet valve, the electrodes being thus cooled.
Patent GB-1334211-A (GB)
Title: Pressure transducer device
IPC: G01L9/08
Filed: 1972-01-17
Abstract: 1334211 Pressure transducers INSTITUT FRANCAIS DU PETROLE DES CARBURANTS ET LUBRIFIANTS 17 Jan 1972 [19 Jan 1971] 2176/72 Heading H4J A pressure transducer (Figs. 1, 3) e.g. for sensing pressure waves in a liquid medium, comprises two flexible plates 1, 3 close to and facing each other and at least one pressure transducer element 5 (as described piezoelectric) secured to a plate 1 on the side opposite to the side facing the other plate 3. The plate (or plates) to which a pressure transducer element is (or are) secured has a rigid peripheral reinforced portion 2 (4) of greater thickness than the central portion thereof and against which the other plate bears. Both plates are held in a fluidtight acoustically transparent coating 9. Fig. 1 shows two pressure transducer elements 5, 7. The spacing of the flexible plates, 1 3 is such that they may flex within their elastic limits to touch each other. The plates 1 and 3 may be made of metal or plastics material. If a plate carrying a transducer element 5 is of metal it acts as a current conductor whereas if it is of plastics material it carries a conductive layer which acts as a current conductor. As shown in Fig. 1 the external electrodes 6, 8 of the transducer elements 5, 7 are connected to a common conductor 10 and the plates 1, 3 or their conductive layers are connected to a common conductor 11.
Patent GB-193247-A (GB)
Title: Improvements in or in connection with regenerative furnaces
IPC: F27B3/26
Filed: 1922-01-25
Abstract: 193,247. Atkinson, J. S., Stein & Atkinson, Ltd., and Fletcher, J. E. Jan. 25, 1922. Regenerators.-In a regenerative furnace of the kind in which the air or gas is preheated in recuperators before entering the regenerators, the waste gases from the gas regenerators 1, 1<a>, Fig. 1, and the air regenerators 2, 2<a> are led through reversing valves 15, 16 to a duct 6, Fig. 2, and thence through horizontal ducts in the air recuperator 3 before passing to the chimney flue, 8. Gas from the supply pipe 9 passes through the valve 15 to one or other of the regenerators 1, 1<a>, and air entering the recuperator at the inlet 4 passes vertically upwards to the outlet 5 and thence through the valve 16 to one or other of the regenerators 2, 2<a>. The recuperator may be used for heating gas instead of air.
Patent GB-941683-A (GB)
Title: Ejection of airmen from aircraft
IPC: B64D25/10
Filed: 1961-01-20
Abstract: 941,683. Aircraft ejection seats. J. MARTIN. Jan. 17, 1962 [Jan. 20, 1961], No. 2329/61. Heading B7G. [Also in Division F3] Means for ejecting a seat from an aircraft comprises a gun for effecting initial ejection of the seat in a predetermined direction relatively to the aircraft, a primary rocket motor independent of the gun for accelerating the seat in the same direction, having a thrust passing through or near the centre of gravity of the seat and occupant, and an auxiliary rocket motor for producing a thrust in a direction such as to affect the flight path of the seat. The apparatus is as described in Specification 920,545, with the addition of the auxiliary rocket motor. In Fig. 2, two (or any number of) canisters 25 are screwed to bosses on the rocket motor pack spine 4, each containing a charge 38 and having a nozzle 27, ignition being by hot gases from a cartridge 30 detonated by a firing pin 34 on a piston 33 impelled against the cartridge by the gases in the spine against a biasing spring 36. The resulting thrust may compensate for a pitching moment occurring on ejection. The canisters 7 and 25 may extend on one side only of the spine. In Fig. 8, two canisters 7e with a nozzle 58 are mounted on the rear upper portion of the seat frame. One canister contains a detonator cartridge, and the nozzle may be adjustable in direction. Specifications 583,257, 640,520, 652,131, 711,234 and 843,269 also are referred to.
Patent GB-1294044-A (GB)
Title: Melt-adhesive filaments and films of thermo-plastic acrylonitrile copolymers
Inventor: SCHNALKE KARL-ERWIN
IPC: C09J7/10
Filed: 1971-01-19
Abstract: 1294044 Melt adhesive terpolymers FARBENFABRIKEN BAYER AG 19 Jan 1971 [20 Jan 1970] 2472/71 Heading C3P A melt adhesive terpolymer having a softening point of 125-175 C. contains 60-70% acrylonitrile, 30-25% methacrylonitrile and 5-10% of an ester of acrylic or methacrylic acid. The polymers are formed by aqueous phase polymerization using a redox catalyst in the presence or absence of emulsifier. In examples the ester is methyl or ethyl acrylate. The product is formed into films or filaments.
Patent GB-130392-A (GB)
Title: Strengthening and Squaring Plates Applicable to Frameworks of Aerial Navigation Machines.
Inventor: LETORD EMILE
IPC: B64C1/00
Filed: 1918-02-12
Abstract: 130,392. Letord, E. April 4, 1917, [Convention date]. Framework.-Aircraft framework is strengthened at sections where cross-bracing is undesirable by flanged metal plates d having lightening- holes k and holes j appropriate to the use made of the section.
Patent GB-607097-A (GB)
Title: A method of producing dry plate electric rectifier elements
IPC: H01L23/48
Filed: 1946-01-25
Abstract: 607,097. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd. Jan. 25, 1946, No. 2541. Convention date, Feb. 2, 1945. [Class 37] Dry plate rectifier elements are produced by arranging a number of rectifier plates 2 upon a base 1, setting a mask 5 having holes 6 substantially corresponding with the shape of the plates upon the base, and exposing the whole to a selenium covering process, preferably by sprinkling. Selenium is thus prevented from extending from the outer edges of the plates to the base. The edges of the central apertures 3 are kept clear of selenium by circular masks 7, held by wires 8. The diameter of the openings 6 are somewhat smaller than the rectifier plates 2, and the diameter of the mask spots 7 somewhat larger than the central apertures 3.
Patent GB-1111150-A (GB)
Title: Clothes washer machine
IPC: D06F37/30
Filed: 1966-01-20
Abstract: 1,111,150. Slip couplings. GENERAL MOTORS CORPORATION. 26 Jan., 1966 [4 Feb., 1965], No. 2625/66. HeadingF2U. [Also in Division D1 The rotary drum of a washing machine is driven through a slip clutch which slips at a torque below the maximum torque of the motor to prevent out of balance loads in the tub from being rotated to speeds above the critical speed. The slip clutch comprises a plate 100, between clutch linings 102, 104 rotating with a driving drum 80, and keyed to a driven member 106 by notches 108 which fit over bosses 110 on the member 106, an elastomeric isolator 112 dampening the transmission of sound. Teeth 114 on linings 102, 104 mate with slots inside the drum 80 and beneath lining 104 is a coil spring 118, the whole assembly being held in place by retainer 121. Spacers 124 on screws 126 between retainer 121 and the drum are chosen so that the compression of spring 118, when screws 126 are fully tightened, is such that plate 100 will slip at load torque below maximum motor torque.
Patent GB-868957-A (GB)
Title: Improvements in methods and an apparatus for the manufacture of brushes and the like
IPC: A46B3/12
Filed: 1959-01-23
Abstract: 868,957. Moulding brushes. DEAN, J. D. Jan. 21, 1960 [Jan. 23, 1959 ; March 3, 1959], Nos. 2653/59 and 7380/59. Class 87(2). A brush having teeth or bristles formed integrally with the backing member is formed by injecting plastic material such as polythene, polystyrene or polyamide into the teeth-forming cavities in a stationary mould member and the backing member cavity formed with a movable mould closure member in engagement with the stationary member; the brush being withdrawn from the teeth-forming cavities by moving the closure member away from the stationary member. A stationary base plate member 10 is provided with an insert plate 12 having an inlet conduit for the polythene and a support block 18 and a gauge plate 20 which together form a cavity in which is located a stationary die plate assembly 17 comprising a number of spacing plates which separate die plates provided with teeth-forming recesses of triangular cross-section, Fig. 4 (not shown). A movable head block 30 provided with stripper plate 31 and inset plate 32 engages block 18 and a core member 35 grooved at 59 and attached to a second movable block 36 projects through plate 31 to enclose the backing member cavity. An outer block 41 is recessed to receive an ejector plate 43 attached to block 30 and, after injection, blocks 30, 36, 41 are slowly retracted from plate 10 to the fig. 5 position, after which plate 43 engages a stop and only members 36, 35 continue leftwards; the backing member being forced from the core 35 and the flange in groove 59 sheared off. The apparatus including core 35 may be cooled.
Patent GB-1162933-A (GB)
Title: Improvements in or relating to grinding plant
IPC: B02C17/18
Filed: 1968-01-18
Abstract: 1,162,933. Tube mills. PACEMIN A.G. PATENTVERWERTUNGS-GES. 18 Jan., 1968 [31 Jan., 1967], No. 2660/68. Heading B2A. Two separate milling chambers 9, 10 of a tube mill, are fed via two separators 5, 6. Coarse particles are returned to the chambers, the plant being arranged so that the milling chambers, associated conveyors and separators succeed each other in the path followed by the material through the plant. In operation, material supplied at 1, 2 is carried by elevator conveyors 3, 4 to the cyclones 5, 6, the coarse output at 7, 8 being returned to the chambers 9, 10. The output of the chambers is supplied by crossed-over pipes 11, 12, so that material is ground alternately in one mill chamber or the other. Further embodiments comprise the crossing over of the pipes 13, 14 from the elevators 3, 4, Fig. 2 (not shown) or the crossing over of the coarse outlet pipes 7, 8 of the cyclones 5, 6, Fig. 3 (not shown). Hot gas sweeping may be provided.
Patent GB-1057461-A (GB)
Title: Improvements in or relating to electrostatic recording
IPC: G03G5/10
Filed: 1964-01-21
Abstract: 1,057,461. Selective printing. FUJITSU Ltd. Jan. 21, 1964 [Jan. 21, 1963], No. 2692/64. Heading B6F. [Also in Division G2] In a method of producing electrostatic images an electric field is passed through a stack of at least two sheets 8 which are subsequently separated. The field is created between two electrodes 6, 7, one of which 6 is a rotary electrode having a pattern of characters thereon. Each sheet includes a base layer of paper carrying a film having a specific resistance of at least 10<SP>13</SP> ohm. cm., the surface on which the image is produced having an unevenness in the range 2Á to 20Á. The base (b), Fig. 2 (not shown), may be paper with an uneven surface which produces unevenness of the film (a) of insulating material or the base may be smooth and the film itself uneven. When a required character on the electrode 6, Fig. 4. reaches a position facing a selected electrode 7 a high voltage circuit 9 is actuated by a control circuit 10 to apply a high voltage between the selected electrode 7 and a character on electrode 6. The electrostatic image is developed by powder or liquid in conventional manner, e.g. cascading.
Patent GB-636153-A (GB)
Title: Improvements relating to laundry irons
IPC: D06F75/34
Filed: 1948-01-30
Abstract: 636,153. Hand-irons. DALLOW, H. E., and DALLOW, G. H. Jan. 30, 1948, No. 2744. [Class 138 (ii)] A laundry iron comprises two parts, a handle part c and a base part a, the latter having a recess in its upper face to receive the base portion of the handle part, the two parts being fastened together with the interposition of an asbestos or other heat-resisting washer b by screws c<SP>2</SP> which pass through the washer. The handle portion may be stove enamelled and may be built up from a base portion and a handle portion.
Patent GB-1059303-A (GB)
Title: Penicillins
Inventor: LONG ANTHONY ALFRED WALTER
IPC: C07D499/76
Filed: 1965-01-22
Abstract: The invention relates to penicillins of general formula <FORM:1059303/C2/1> and non-toxic salts thereof, where R1 and R2 are the same or different and are each an alkyl, aryl, acyl, aralkyl, cycloalkyl, heterocyclic, alkoxy, aryloxy, aralkoxy, alkylthio, aralthio or aralkylthio group which may be substituted, or a halogen atom.  The penicillins are produced by reacting 6-amino penicillanic acid or a salt thereof, with a reactive derivative of an acid of general formula <FORM:1059303/C2/2> wherein R1 and R2 have the meanings given above, by the method described and claimed in Specification 905,778. Typical compounds are 3,5 - bis - (methylthio) - 4 - isothiazolyl penicillin and 3,5-dichloro-4-isothiazolyl penicillin.
Patent GB-1216643-A (GB)
Title: Method and apparatus for winding a yarn
IPC: B65H75/06
Filed: 1969-01-17
Abstract: 1,216,643. Winding yarn on to cardboard strip. MOULINAGE ET RETORDERIE DE CHAVANOZ. 17 Jan., 1969 [19 Jan., 1968], No. 2882/69. Heading B8G. [Also in Division D1] Yarn is wound continuously on to a substantially rigid support tape using apparatus comprising means A for feeding the tape in jerks, a winding device B which is reciprocated longitudinally to distribute the yarn upon a portion of the tape, and means C for withdrawing the tape. The tape, which may be a strip of card 11 is fed by a roller 2 which is advanced intermittently by electromagnets 8, and held in position by a locking rod 7. Winding device B which may comprise one or two bobbins of yarn, is rotated by a motor 32 and reciprocated by a motor-driven cam 36. The yarn is wound around the card and a rod 40 as the card emerges from a sheath 39, its tension being relieved as it is moved off the end of the rod. Motor-driven rollers 12 and 13 withdraw the card and apply a strip of adhesive tape 17 to locate the yarn. Sampling cards, each holding a winding of, yarn are finally cut off by a knife 21. All the operations are synchronized to produce identical cards.