baber/WOPTO huggingface dataset:
Patent GB-735251-A (GB)
Title: Improvements in or relating to electric signalling systems of the kind using pulse code modulation
IPC: H03M1/00
Filed: 1953-03-05
Abstract: 735,251. Pulse code modulation circuits. GENERAL ELECTRIC CO., Ltd., and ELSON, D. W. March 5, 1954 [March 5, 1953], No. 6196/53. Class 40 (5). In a coding circuit, a first integrator circuit is set to a sample signal level and a second integrator to a predetermined level, a comparison of the difference in levels being used repeatedly to determine to which integrator each pulse of a sequence of pulses, decreasing in amplitude in geometric progression with a ratio of one half, is applied, so that the difference approaches zero during a coding cycle. The pulse elements of the code group to be utilized are supplied in dependence upon the result of each comparison. In the embodiment described, the integrator capacitors 1, 2, Fig. 2, at the beginning of a coding operation, are respectively supplied with a sample signal potential and earth potential by the application of a pulse 84, Fig. 4 (c), to the terminal 44 to render conducting the two,clamp circuits 6, 8. The signal potential applied to circuit 6 is derived from the cathode of the cathodefollower valve 4 to which the signal is applied at terminal 3. The negative pulses 88, 91, &c., Fig. 4 (b), of decreasing amplitude, are generated by the application of a pulse 29, Fig. 4 (a), to the grid 28 of a valve 25 which excites a tuned anode circuit 26, the positive half cycles of the resulting damped wave being absorbed by the diode 35. The negative pulses are fed in parallel to the cathodes of valves 12, 13, whose anodes are connected respectively to the capacitors 1, 2. Prior to the arrival of each pulse, the appropriate one of valves 12, 13 is rendered non-conducting by.adjustment of the grid potentials over leads G, H, which are connected to a slicer circuit, Fig. 3 (not shown), which at the appropriate time makes a comparison of the potentials of the two capacitors. D.C. restoration on the grids of valves 12, 13 is provided by diodes 18, 19. In this way, the adjusting pulses are applied to that capacitor which is the most positive to reduce the difference between their potentials. The slicer circuit is described in Specification 735,252 and its output, appearing on lead H, provides the code signal. Specification 664,401 also is referred to.
Patent GB-1159869-A (GB)
Title: Air Driven Centrifuge
Inventor: HEIN GEORGE NORTON
IPC: B04B5/04
Filed: 1967-09-22
Abstract: 1,159,869. Centrifugal separators. G. N. HEIN. 22 Sept., 1967. No. 6227/69. Divided out of 1159868. Heading B2P. The subject matter of the present Specification is identical with that relating to Figs. 1 to 4 of the parent Specification but the claims are concerned with an air-driven centrifuge comprising a rotor having a lower surface resting on a supporting surface of a stator so that the rotor is supported when it is stationary, and means for introducing air between the lower surface of the rotor and the supporting surface of the stator including air jet means directed anguarly upwards to cause the rotor to rotate and be supported on an air cushion out of engagement with the supporting surface of the stator while so rotating, the supporting surface on the stator being provided by a stator ring which is mounted on the stator so as to allow the ring to move in a precessional and rocking manner thereby facilitating the stabilisation of the rotor during vertical speeds of rotation.
Patent GB-306289-A (GB)
Title: Improvements in ropeway and the like conveyor systems
IPC: B65G47/61
Filed: 1928-02-29
Abstract: 306,289. White, J. W., and Valberg, C. O. Feb. 29, 1928. Vehicle fittings; terminals and stations for overhead and suspended ways; platforms. - A cage 4 suspended by a hanger 1 from a carriage 2 on an overhead cable or runway 3 is fitted with a movable floor 10 which is hinged at 11 and supported by a cam 12. The cam is moved by a hand-lever 14 to tilt the floor up or down for loading and unloading drums &c. Platforms 18 at the loading and unloading stations are inclined towards and from the cage. A bridging flap 15 is pivoted to the cage and is normally retained in the vertical position by gravity catches 19. The flap is released automatically from the catches when the floor of the cage is lowered for unloading. The cage may be fitted with rollers 8 to engage a rail 9 at the stations.
Patent GB-1194940-A (GB)
Title: Isomerisation of 3-pentenenitriles to 4-pentenenitriles
IPC: B01J31/26
Filed: 1968-10-31
Abstract: 1,194,940. 4-Pentene nitrites. E. I. DU PONT DE NEMOURS & CO. 31 Oct., 1968 [1 Nov., 1967], No. 6315/70. Divided out of 1,194,939. Heading C2C. 4-Pentene nitriles are obtained by isomerizing 3-pentene-nitriles by contact with palladium or platinum compounds in which the valence of the metal is + 2 or less, at - 25‹ to 200‹ C. Specified catalysts are palladium dihalides and compounds of the formula M(PX 3 ) 4 , where M is palladium or platinum atom and X is OR or R, R being an alkyl group or an aryl group having up to 18 carbon atoms, and wherein any of the X's may be cojoined. The catalyst, which may be prior prepared or formed in situ, may also contain a promoter, many types of which are specified, and/or an acid.
Patent GB-540249-A (GB)
Title: Improvements in casting copper chromium steels
IPC: B22D27/04
Filed: 1940-04-09
Abstract: 540,249. Iron alloys; annealing. DIGBY, W. P., and DIGBY, E. T. April 9, 1940, No. 6359. [Classes 72 and 82 (i)] [Also in Group XXII] Steel containing 5 to 25 per cent. of copper and 10 to 30 per cent. of chromium is poured, at a temperature below the critical point of 1430‹Œ10‹C into a mould and then rapidly cooled. The cast : ingot may be reheated to 950‹-970‹C. and slowly cooled prior to soaking and heating for forging or rolling. Steel containing 18 per cent. of chromium, 8 of copper, under 0.1 of carbon, about 0.5 of manganese, and 0.2 of silicon poured at between 1430‹- 1440‹C. into an air-cooled metal mould, produced an ingot having small crystals and which forged easily. Specifications 479,521 and 482,941 are referred to.
Patent GB-743056-A (GB)
Title: Variable speed power transmission
IPC: F02D29/00
Filed: 1951-03-16
Abstract: 743,056. Regulating. MAY, C. H. March 16, 1951 [March 21, 1950], No. 6376/51. Class 7(6) [Also in Groups XXIV, XXVI and XXXI] In a motor vehicle, an internal combustion engine 11 has its power output controlled from a single pedal 88 in such a way as to give the optimum efficiency for each setting of the pedal, the pedal being connected through the cams and links shown to (a) the carburetter throttle 14, (b) the ignition distributer 16, (c) a centrifugal governor 51 (see Group XXVI) which adjusts the velocity ratio in expanding-pulley belt gearing (see Group XXIV) transmitting drive to road wheels 13, and (d) to a valve 117 which varies pneumatic means to adjust the tension in the pulley belts.
Patent GB-800507-A (GB)
Title: Poker
IPC: F24B15/00
Filed: 1956-03-01
Abstract: 800,507. Fire - irons. INGRAM, T. A. Feb. 22, 1957 [March 1, 1956], No. 6389/56. Class 126 [Also in Group XXIII] A poker 3 bent at one end has a handle 1 at the other end on which is pressed a shield 2 for protecting the hands from the heat of the fire.
Patent GB-276895-A (GB)
Title: Improvements in and relating to devices for protecting the contents of shop window show cases against theft, applicable also for the protection of bank, post office and like counters
IPC: E05G7/00
Filed: 1927-03-08
Abstract: 276,895. Barham, E., and Barham, A. March 8, 1927. No Patent granted (Sealing fee not paid). Window guards; shutters.-A guard for preventing theft from a show case, bank, post office, or like counter consists of an encased roller shutter J held open normally by a catch G on the glass of the case and released by pushing the glass to fall by gravity. Pivoted serrated catches C, C<1> hold the shutter in its lowered position. The catches C, C<1> are held inoperative by pins P when the shutter is being rewound by a handle N applied to the squared end of the ball-bearing spindle. The glass, when pushed back, rests against stops M, M'. Barbs or spikes may be provided in the bottom rail of the shutter to catch in a thief's clothing and assist in his capture. When applied to a bank or like counter, the shutter is released by a Bowden wire or other means. An alarm circuit may be closed by the fall of the shutter.
Patent GB-1253768-A (GB)
Title: Linear induction motor producing travelling magnetic fields of opposite directions
IPC: B65G23/00
Filed: 1970-02-11
Abstract: 1,253,768. Electric railways. MERLIN GERIN. 11 Feb., 1970 [17 Feb., 1969], No. 6469/70. Heading B7L. [Also in Divisions E2 and H2] A linear induction motor comprises a polyphase-wound field member 10, the winding being arranged so as to produce magnetic fields moving in opposite directions on opposite sides of the field member. As shown in Fig. 1, the coils of phase III extend between oppositely directed slots 16, 18 on the two sides 12, 14 of the field member whilst the coils of phases I and II are transposed between slots on opposite sides of those containing the phase III coils. Yokes 30, 32 are located adjacent the sides 12, 14 of field member 10 so as to define air gaps 26, 28 through which move armatures 22, 24. The motor may drive trains of cars 34, Fig. 3, along a closed circuit track 36. Spaced field members 40, 42 are located between the forward and return parts of the track and co-operate with armature plates carried by the cars.
Patent GB-744908-A (GB)
Title: Production of sulfur from hydrogen sulfide and sulfur dioxide
IPC: C01B17/04
Filed: 1953-03-09
Abstract: In the production of sulphur by the interaction of hydrogen sulphide and sulphur dioxide, a gaseous mixture comprising at least 13 1/3 per cent of sulphur dioxide and at least 26 2/3 per cent of hydrogen sulphide is passed through a catalytic reaction chamber under such conditions that substantial deposition of sulphur on the catalyst is avoided.  The reaction chamber preferably contains a fixed bed of solid catalyst, for example bauxite, and the velocity of the gas stream is preferably such that there is no perceptible migration of the established zone of reaction within the bed.  Substantially pure hydrogen sulphide and sulphur dioxide in the molar ratio of 2 : 1 are preferably employed with indirect heat-exchange.  The reaction may be carried out in one or more stages, sulphur or sulphur and water being condensed after the first stage.  Alternatively the gases remaining after the separation of sulphur may be burned and sulphur dioxide separated for recycling to the process.  Sulphur dioxide for the process may be obtained by burning hydrogen sulphide, sulphurous petroleum residues, sludge acids, acid sludges, mercaptans and sulphide ores and concentrating by means of solvents such as dimethylaniline or xylidine.  The solvent may be stripped of its sulphur dioxide content by means of a gaseous mixture comprising the solvent and steam.  Steam coils may supply indirect heat.  The sulphur dioxide may be dried with concentrated sulphuric acid. Hydrogen sulphide for the process may be obtained by fractionating crude petroleum and concentrating by means of a solvent such as diethanolamine.  The solvent may be stripped of its hydrogen sulphide content by means of steam coils.  The hydrogen sulphide may be dried by cooling and/or counter-current scrubbing with diethylene glycol. Specification 146,141 [Class 90].
Patent GB-844199-A (GB)
Title: Extrusion apparatus
IPC: B29C48/06
Filed: 1958-02-28
Abstract: 844,199. Extruding coatings on cores. STANDARD TELEPHONES & CABLES Ltd. Feb. 28, 1958 [March 7, 1957], No. 6532/58. Class 87(2). An extrusion-core coating apparatus comprises a block member 2 having an axial channel 4, a tapered member 14 disposed in the channel 4 and having a helical rib the edges of which are of differing pitch so that the width of the helical groove diminishes towards the smaller end of the member 14, a die 5 having a tapered bore 6 within which the small end of the tapered member 14 is centred, a chamber 3 through which the plastic material is fed and a second channel 3<SP>1</SP> extending from the chamber 3 to the channel 4 in a direction tangential to the base of the helical groove in the member 14 and being of rectangular cross-section and of a size equal to that of the groove at that position. The tapered member 14 has a tip 11 with a ball and socket seating 15 so that the tip 11 may be centered in the die 5 by means of screws 26 in a collar 20 and its helical rib may be formed with steps 14<SP>1</SP> so that its depth decreases towards its tapered end. The tip 11 has a bore 30 for the passage of the core to be coated and has suction holes 31 leading to a line 33 enabling the plastic sheaf to be drawn on to the core. A cover 27 with an inspection window 28 is provided and heating is by electrical elements 9, 19.
Patent GB-1048962-A (GB)
Title: Transistor signal-translating apparatus for line voltage operation
IPC: H03F3/04
Filed: 1964-02-17
Abstract: 1,048,962. Transistor amplifier supply circuits. RADIO CORPORATION OF AMERICA. Feb. 17, 1964 [Feb. 25, 1963], No. 6554/64. Heading H3T. The output stage of a transistor amplifier utilizes a high voltage type transistor and is fed from a 115 v. A.C. mains supply directly via a rectifier and the driver stage is fed via a dropping resistor and a smoothing capacitor. Fig. 1 shows a radio receiver comprising an output stage 24 utilizing a high voltage silicon mesa transistor having its collector supply derived from the 115 v. A.C. supply 59 via a rectifier 57 and a smoothing capacitor 58. The lower voltage supply for the remaining stages is derived from the rectifier via a hum bucking winding of the output transformer, a voltage dropping resistor 66 and a smoothing capacitor 67. The driver and output stages are of opposite conductivity type and are D.C. coupled, resistors being provided to stabilize the circuit. In an alternative circuit for a gramophone amplifier (Fig. 2, not shown) transistors of the same conductivity type are used and negative D.C. feedback is provided between the output stage emitter and the input of the driver stage.
Patent GB-144793-A (GB)
Title: Improvements in and relating to hand blakes for railway vehicles
IPC: B61H13/02
Filed: 1919-03-17
Abstract: 144,793. Cunningham, J., and Dickson & Mann. March 17, 1919. Hand actuation; compensating for wear; forcetransmitting mechanism.-Either-side brakes for railway vehicles are operated by hand-levers 11, connected by rods 10 to arms 9 on a shaft 8 carrying a crank 13 which operates, by means of a compression spring 20, a pair of toggle links 14, 15 which actuate the brake-rods 3 through the medium of a lever 17 and a link 21 connecting the lever to a crank 19 on the brake shaft 5. The spring 20 is carried by a link 33, pivoted at one end to the arm 13 and having a slotted connexion with the toggle joint 34. The brakes are held on by the spring 20 after the crank 13 has been moved past its dead centre position. The link 14 is pivoted at 16 to the fixed bracket 7, and the link 15 is pivoted to the lever 17 which is pivoted to the bracket 7 at 18. The link 21 is automatically adjustable to take up wear, and comprises telescopic members operated by a screw 22 rotatably mounted in a bearing 23 carried by the lever 17. The screw 22 carries a ratchet-wheel 30 which is operated by a pawl 29 mounted in a casing 28 carrying arms 27 which are connected by means of a link 25 to an extension of the toggle-link 14. Stops 11<a> limit the movement of the levers 11. The apparatus may be actuated by fluid-pressure, in which case the piston of the brake cylinder may be connected to a crank on the transverse shaft carrying one of the levers 11, or, as described in the Provisional Specification, to a crank on the shaft 8.
Patent GB-525963-A (GB)
Title: Improvements in devices to support the feet of a pedestrian and to facilitate walking
IPC: A43B13/14
Filed: 1939-03-01
Abstract: 525,963. Boots &c. METCALF, W. MILLER-. March 1, 1939, No. 6708. [Class 17 (ii)] A resilient plate A is applied to footwear under the instep to bridge the gap between the heel and sole so that in walking heel shock is first absorbed at the heel, which may be cut away at B<SP>6</SP>, followed by rebound, while the main spring depression relieves strain at the instep and gives a forward impulse. In one example, the plate A is rigidly secured to the middle of the heel and is free at its forward end to press on the rear of the front sole B' directly or indirectly through a pad. The spring is cranked at A<SP>1</SP> to increase resiliency. A pad A<SP>10</SP> of rubber, leather or the like may also be employed. In a modification, the forward end of the spring may be secured by screws to the sole. In another modification instead of the spring being cranked under the instep it may be reinforced by an additional spring abutting against the heel.
Patent GB-676476-A (GB)
Title: Improvements in or relating to soldering iron bits
IPC: C22C9/04
Filed: 1950-03-17
Abstract: A soldering iron bit wholly or partially of brass comprising 58-65 per cent Cu, 35-42 per cent Zn and Si up to 5 per cent with or without Sn up to 5 per cent preferably employs brass of the following composition: 60 per cent Cu, 39 per cent Zn, 0.5 per cent Si, 0.5 per cent Sn.
Patent GB-240726-A (GB)
Title: Process and apparatus for treating peat, brown coal, lignite and similar materials, the fibres of which can be cut and opened
IPC: C10F7/04
Filed: 1925-03-12
Abstract: 240,726. Meijer, H. de. March 12, 1925. Cutting and slicing vegetables &c. - Raw peat, brown coal, lignite, or like material, without being subjected to pressure is cut to open all the fibres and form a soft paste with which is mixed a small quantity of calcium chloride or other salt or alkali, the mixture being extruded and cut into pieces which are air-dried. The apparatus comprises a mixing receiver a for the raw peat, cutting contamers b, d, f, h, conveying conduits c, e, g and an extruding press i, the whole being mounted on a frame w. Knives 5 in each cutting container depend from a plate 4 through a loosely mounted stripping plate 9, and in addition to a vertical reciprocation have a slight horizontal to and fro movement imparted to them by opposed tapered bars located in the upper part of the container. An elastic packing 8 is interposed between a hard wood bottom 6 and the bottom plate 17. The knives may be curved to form concentric circles and may have a small movement about their centre.
Patent GB-267543-A (GB)
Title: Means for improving the utilisation of heat in drying drums
IPC: F26B11/02
Filed: 1927-03-11
Abstract: 267,543. Ludwig, C. March 11, 1926, [Convention date]. Continuous - discharge apparatus, rotary.-Rotary drying-drums having internal baffles for scattering the loose material to be dried, and spiral outlets for the drying-air at the discharge end are modified by extending the baffles e of the drum a right through the air-outlet channels b, so that the discharged material is not piled up until after it has passed the air-outlets. The air is exhausted by a fan at the top of a casing d. and the material piles up between the channels b and the usual apertured baffle g through which it is discharged.
Patent GB-255815-A (GB)
Title: Improvements relating to combined reciprocating engines and turbines
IPC: F01K7/02
Filed: 1926-03-11
Abstract: 255,815. Wach, H. July 24, 1925, [Convention date]. Motor power plant.-Plant comprising a reciprocating engine and a turbine utilizing the exhaust of and acting through gearing and a coupling on the shaft of the other engine, is characterized by the coupling being of the fluid type. The reciprocating engine 1 drives direct the propeller shaft 2, and the turbine 3 acts through a reducing gear 4, hydraulic coupling 5, and a reducing gear 6.
Patent GB-1192347-A (GB)
Title: Bis-Guanidinium Salts
IPC: C08K5/31
Filed: 1969-02-07
Abstract: 1,192,347. Bis-guanidinium salts. TOYO RAYON CO. Ltd. 7 Feb., 1969 [12 Feb., 1968], No. 6904/69. Heading C2C. [Also in Division C3] The novel compounds bis-guanidinium tetrabromophthalate or tetrachlorophthalate are prepared either (1) by reacting tetrabromophthalic anhydride or tetrachlorophthalic anhydride with an inorganic salt of guanidine, or (2) by an exchange reaction between an alkali metal tetrabromophthalate or tetrachlorophthalate with an inorganic acid salt of guanidine. A suitable salt in reaction (1) is guanidine carbonate, and in reaction (2) the hydrochloride, sulphate, nitrate, carbonate or phosphate.
Patent GB-539737-A (GB)
Title: Manufacture and application of printing colours and binding agents therefor
IPC: D06P1/44
Filed: 1940-02-22
Abstract: 539,737. Printing colours ; resinous condensation products. SOC. OF CHEMICAL INDUSTRY IN BASLE. Feb. 22, 1940, No. 6926/41. Convention date, March 23, 1939. Divided out of 538,993. [Classes 2 (iii) and 15 (ii)] A binding agent for printing colours is made by emulsifying in water a solution in an organic solvent immiscible with water, e.g. butyl alcohol or xylene, with or without a diluent such as benzine, of an ester-ether compound of a poly-alcohol made as described in Specification 538,993. The emulsification may be conducted with the addition of a pigment dyestuff whereby a printing colour is directly obtained. Protective colloids such as gelatine and softening agents such as isobutyl phthalate may be added. Suitable pigments include vat dyestuffs, insoluble azo dyestuffs, phthalocyanines, iron oxide, ultramarine blue and chrome yellow. Dyestuffs soluble in water or in the organic solvent or diluent may be added. The prints on paper or textiles are fixed by hardening or by heating.
Patent GB-1368044-A (GB)
Title: Jet-deflector for vertical and short take-off and landing aircraft
IPC: F02K1/00
Filed: 1973-02-13
Abstract: 1368044 Jet-deflector for aircraft MESSERSCHMITT - BOLKOW - BLOHM GmbH 13 Feb 1973 [16 March 1972] 7054/73 Heading B7G A jet-deflector duct assembly for a V/STOL aircraft comprises a duct, mounted to receive the exhaust from a jet propulsion engine, having a series of sections 6, 7, 8 rotatable with respect to one another to direct the propulsion jet, a member 13 or 14 adapted to be fixed to aircraft structure 1, and means to lock one of the sections directly or indirectly to the member when the duct is in a predetermined setting. Thus the central sections 7 may be locked to the member 13, or a nozzle 10 carried by the member 8 may be locked to the member 14. The locking may take place automatically when the duct is in the said predetermined setting, which will normally be the cruise setting.
Patent GB-124097-A (GB)
Title: Variable Speed Friction Device.
Inventor: LOWE RICHARD
IPC: F16D13/46
Filed: 1918-05-24
Abstract: 124,097. Lowe, R., and Wainwright, E. May 24, 1918. Clutches, friction; variable-speed gearing.-A multiple-rope pulley d' or other variable-speed device is carried by the driven disk d of a plate clutch comprising faced driving plates b, c clutched to the disk d by the pressure of an adjustable spring f. The clutch is disengaged by a lever n, screwed rod j, and nut i.
Patent GB-1478219-A (GB)
Title: Telecommunication exchange circuits
IPC: H04M3/22
Filed: 1975-02-20
Abstract: 1478219 Current monitoring STANDARD TELEPHONES & CABLES Ltd 20 Feb 1975 7158/75 Heading G1U [Also in Division H4K] A circuit for indicating the presence of a D.C. current in a wire includes a Hall Effect element 2 positioned in an air gap of a magnetic circuit, the primary winding 1 of the device being connected in series with the wire to be monitored. The D.C. bias supply for the Hall Effect element is pulsed and if the magnetic circuit is saturated due to a D.C. current flowing in the winding 1, an output pulse is produced across the elements output terminals. If the wire is found to be carrying D.C. on four successive pulsings, a bi-stable circuit is set to give a 'D.C. present' indication. Integrated circuitry and a programmed microprocessor may be used for controlling the pulsing operation and the analysis of the result, Figs. 5 and 7 (not shown), the micro-processor supervising a  plurality of indicating circuits. The arrangement is applied to loop detectors in a telephone exchange (Divisions H3-5).