baber/WOPTO huggingface dataset:
Patent GB-1302760-A (GB)
IPC: G05D23/24
Filed: 1970-04-20
Abstract: 1302760 Triggering thyristors MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 20 April 1970 [22 April 1969 27 May 1969] 18852/70 Heading H2F [Also in Division G3] In an electric blanket temperature control arrangement the blanket heater wire 17 (Fig. 3) is supplied during positive half cycles of an A.C. source 11 via a thyristor 15 and a diode 16. The thyristor is triggered only during negative half cycles by a pulse from a transformer 22 when a neon tube 21 fires and at this time a capacitor 23, which was charged during the negative half cycle via a diode 25, discharges through Th 15 and R24. The time constant of C23, R24 is such that the discharge of C23 continues to flow through Th 15 maintaining a holding current therein until current begins to flow therethrough from the source 11 during the next positive half-cycle. Thereby zero voltage switching of the heater load is obtained and radio frequency interference is substantially reduced. The desired temp. is preset on a resistor 18 and the actual temperature is sensed by a thermistor 19 between the heater wire 17 and a defector wire 20. The lower the temp. the higher the impedance of the thermistor and the greater the proportion of the supply voltage thereacross. When this voltage proportion is such that the firing potential of neon tube 21 is exceeded during a negative half cycle, the thyristor is fired and the heater is subsequently energized during the next position half cycle. If Th 15 is not triggered during a negative half cycle it will be blocked by the charge on C23. In an alternative embodiment Fig. 6 (not shown) the thermistor material is between a pair of signal wires one of which is connected to the neon tube pulse generator, and there is a pair of heater wires with insulation therebetween which insulation becomes molten above the desired temp. whereby the heaters will short circuit and blow a fuse cutting off the blanket heater current.
Patent GB-153096-A (GB)
Title: Improvements in the means of ventilating and protecting all foods (either liquid or solid) from flies, dust and rain, whether kept in or out of doors
IPC: A47G19/26
Filed: 1919-07-31
Abstract: 153,096. Marguet, J. C. C., and Harris, F. Jnly 31, 1919. Covers for plates, dishes, and the like.-Relates to devices for protecting food from flies, dust, &c. while allowing ventilation, and consists in the combination of a gauze base with a metal or like covering having ventilating apertures. Figs. 1 and 2 show a form suitable for protecting food contained in a basin. A metal ring a is filled in with gauze having strengthening ribs b of L section serving as guideways for plates c with bent extensions. A metal cover d haa ventilating apertures h.
Patent GB-1492720-A (GB)
Title: Steel bolt with high limit of elasticity
IPC: F16B33/00
Filed: 1976-05-10
Abstract: 1492720 Bolts CENTRE DE RECHERCHES METALLURGIQUES 10 May 1976 [14 May 1975] 19087/76 Heading F2H [Also in Division B3] The structure of a steel bolt in transverse cross-section comprises at least two coaxial zones, namely a first zone forming the surface layer of the bolt and consisting of tempered martensite and/or tempered bainite, and a second zone forming the core of the bolt and comprising mainly ferrite-pearlite. The core may contain a minor proportion of carbides. The bolt may further comprise, between the first and second zone, an intermediate zone consisting of iron-tempered bainite. Steel compositions consisting of C, Mn and Si with and without Nb are specified.
Patent GB-462459-A (GB)
Title: Improvements in and relating to wireless communication systems
IPC: H04B1/56
Filed: 1935-07-04
Abstract: 462,459. Aerials; valve circuits. HONEYBALL, L. L.-K. July 4, 1935, No. 19096. [Class 40 (v)] A loop aerial comprises a plurality of tapering hollow conductors. As shown in Fig. 1, the aerial comprises tapered conductors 1a, 1b and 2a, 2b arranged to form a loop and mounted on a support 4 and box B with strengthening lugs g. The conductors 2a, 2b and 1a, 1b form inductances which are associated with the grid and anode respectively of a valve 6 to form an oscillator as shown in Fig. 3, the lower ends of the conductors 1b, 2b being connected through a tuning condenser ct. A condenser cv is connected at the upper end of the loop to permit rough adjustment of the wavelength and to give control of the oscillation of the circuit. The oscillator unit thus formed may be supplied with modulating potentials for transmission and with quenching oscillations for reception, the modulator and low frequency receiver being arranged separate from the aerial unit. Specifications 294,946, [Class 40 (v)], and 462,529 are referred to.
Patent GB-337021-A (GB)
Title: The manufacture of wool dyestuffs of the anthraquinone series
IPC: C09B1/52
Filed: 1929-06-21
Abstract: 337,021. Carpmael, A., (I. G. Farbenindustrie Akt.-Ges.). June 21, 1929. Anthraquinone dyes for wool are obtained by condensing the copper compound of a 1-hydroxy- 4-halogen-anthraquinone-2-sulphonic acid with an alkyl-, aryl-, cycloalkyl-, aralkyl-, or acyl-amino compound, the amino residue entering the 4- position. According to examples, the copper compound of 1-hydroxy-4-bromo-anthraquinone-2-sulphonic acid, obtained by the action of copper sulphate on the acid, reacts with acetyl-pphenylene diamine, and with m-phenylene diamine, to give the corresponding 1-hydroxy-4- arylamino-2-sulphonic acids of anthraquinone, and acetyl-m-tolylene diamine is also specified. Specifications 21897/00 and 276,408 are referred to.
Patent GB-381225-A (GB)
Title: Compositions for impregnating and coating textiles and the use thereof
IPC: D06M15/693
Filed: 1931-07-03
Abstract: Compositions for coating and impregnating fabrics consist of a rubber dispersion such as latex together with aqueous solutions of polybasic acid-polyhydric alcohol condensation products obtained as described in Specifications 356,738, and 358,095, [both in Group IV].  Sulphur, vulcanization accelerators, antioxidants, fillers, pigments, plasticizers, &c., may be added.  The compositions may be cured by heating to 120 DEG  C.
Patent GB-838517-A (GB)
Title: Improvements in and relating to electric discharge lamp circuits
Inventor: STICKLEY WILLIAM ALBERT
IPC: H05B41/232
Filed: 1956-06-20
Abstract: 838,517. Discharge lamp circuits. THORN ELECTRICAL INDUSTRIES Ltd. June 7, 1957 [June 20, 1956], No. 19172/56. Class 38 (4). In a fluorescent lamp circuit of the type comprising a choke, a cathode heating autotransformer and a power factor correcting capacitor, wherein a discharge is initiated across the lamp electrodes when cold to remove remanent charges from the tube wall, the capacitor, whose initial charging current initiates the surge, is arranged to be fed from a tap on the transformer to limit the applied voltage. A fluorescent lamp 20 is connected to a supply 10, 15 through a choke 11 and autotransformer 13. Power factor capacitor 17 is connected across the supply terminal 10 and a tap 16 on autotransformer 13, the tap position being arranged so that less than mains voltage appears across the capacitor. Other arrangements are given in the Specification suitable for very short and very long lamps, low-voltage supplies, and twin lamp arrangements.
Patent GB-596472-A (GB)
Title: Improvements relating to linear-dimension gauges
IPC: B23Q17/22
Filed: 1945-07-26
Abstract: 596,472. Drilling. SHARRATT, J. G., and SHARRATT, A. G. July 26, 1945, No. 19199. [Class 83 (iii)] [Also in Group XIX] A linear-dimension gauge for determining the setting of a cutting-piece f in a boring-bar h or other holder comprises a socket a having a screw-threaded bore co-operating with a screw c and at least one but preferably two clamping screws e.
Patent GB-742613-A (GB)
Title: Improvements in the production of alumina base-platinum metal type reforming catalysts
IPC: B01J23/40
Filed: 1953-07-10
Abstract: In preparing an alumina-base reforming catalyst containing a metal of the platinum group by the process described in Specification 735,390, the platinum metal compound is incorporated in the alumina hydrate at a point intermediate the initial precipitation of the alumina and its transformation into the form in which alumina trihydrates predominate.  The platinum metal compounds may be added during the washing of the alumina hydrate precipitated from an aqueous solution of an aluminium salt or during its transformation into the trihydrate.  An acidic promoter, e.g. fluoride, sulphate, phosphate, silica, boria, chromia, or molybdena, may be added before, during, or after incorporation of the platinum metal compound.  Platinum group metals specified in addition to platinum are rhodium, iridium, and palladium; they may be added as chloroplatinic acid, platinum sulphide, or as soluble salts such as the chloride.  The cataylst may also contain nickel, chromium, or molybdenum together with the platinum metal.  In an example ammonia is added to aluminium chloride solution and the precipitate filtered and washed; ammonium fluoride and chlorplatinic acid are then added, followed by water saturated with hydrogen sulphide.  After filtering and washing the filter cake is aged for 23 days to form the alumina trihydrate and the dried, formed into tablets, and calcined. The catalyst shows greater activity and longer life in the hydroforming of a naphtha feed, as compared with a catalyst prepared according to Specification 735,390.
Patent GB-264405-A (GB)
Title: Quilting apparatus for sewing machines
IPC: D05B35/10
Filed: 1926-08-03
Abstract: 264,405. B÷er, R. Aug. 3, 1926. Work - guides.-An edge-guide m is carried by a slotted bar i vertically adjustable in a block h which is horizontally adjustable along a graduated bar f secured to the presserbar c, the vertical and horizontal adjustments being secured by the same screw g. The device is specially suitable for use with a quilter foot a.
Patent GB-874047-A (GB)
Title: Variable capacity refrigeration system
IPC: F25B9/00
Filed: 1959-06-05
Abstract: A molecular sieve adsorbent for adsorbing monochlorodifluoromethane from a refrigerant mixture containing dichlorodifluoromethane consists of a synthetic crystalline zeolite of the formula CA6(AlO2)12(SiO2)12 or Ca(AlO2)2(SiO2)4 preferably presaturated with dichlorodifluoromethane.
Patent GB-667209-A (GB)
Title: Improvements relating to electromagnetically-operated driving mechanisms
Inventor: COVENTRY ARTHUR LYON WILSON
IPC: G04C13/11
Filed: 1949-07-22
Abstract: 667,209. Non-ratchet electromagnetic stepby-step drive. SIEMENS BROS. & CO., Ltd. July 21, 1950 [July 22, 1949]. No. 19393/49. Class 40 (iv). [Also in Group XXXV] A step-by-step motor, e.g. for use to drive a stepping switch in automatic telephone systems, has an unwound polarized rotor which. advances both upon stator energization and de-energization. The rotor is made up of two members 1, 2 separated from each other by a short gap. The member 1. comprises a permanent magnet 4 and two iron plates 5 each of which has two opposite limbs, with bent-over ends 7. The other rotor member 2 consists of an iron plate 8 having four equally spaced limbs with bent over ends 12 which, together with the other bent-over ends 7, form an eight-pole combination having the pole-pieces equally spaced and interdigitated. The stator has a pole-piece 15 and two pole-pieces 16 which are joined to the stator core by a yoke 17. The stator pole-pieces receive successive magnetizations of opposite polarity from successively excited stator coils 20, 21, the current in either of which depends upon the position of a change-over contact actuated by a cam. When a supply switch is closed a current flows in one of the stator coils so as to produce such a polarity as to repulse a permanently polarized pole-piece 7 and, at the same time, a pole-piece 12 which has a side extension, pointing towards the stator pole-piece is attracted towards the latter. The next step of advance is made when the supply switch a is open, i.e. no stator energization. In this case the torque produced is due to the attraction between each stator pole-piece and that pole-piece 7 which has its side extension pointing towards this stator pole-piece at the time of de-energization.
Patent GB-1509088-A (GB)
Title: Electrostatic reproduction method and apparatus
IPC: G03G15/04
Filed: 1975-05-08
Abstract: 1509088 Multiple copying XEROX CORP 8 May 1975 [25 Sept 1974] 19414/75 Heading G2A A plurality of original sheets are copied in succession on to a web, the image-bearing web being used, in endless form, as a master for the production of a plurality of copies of each original. As shown in Fig.2, sheet originals are copied, while stationary, on a flat platen 31 of an electro-photographic copier using reciprocatory mirrors 32 and 34, the developed images being transferred on to a fanfold web 14. As shown in Figs. 4 and 5, the image-bearing web is placed, as a pack, in a container 110 comprising rollers 126 which are connected by links 128 and are reciprocable in U-shaped channels 120 and 121. The leading end is withdrawn at the bottom between the innermost rollers and fed round rollers 112, 113, 114, 118 and 119, between the curved platen 91 of an electro-photographic copier and the platen cover 115, and past sprocketed feed tractors 101. It is then joined to the trailing end with adhesive tape. For copying, the resulting endless web 70 may be advanced continuously or stepwise, scanning being effected, in the latter case, by rocking of mirror 90. The developed images are transferred on to individual sheets, which pass from supply tray 81  to output tray 87.
Patent GB-357629-A (GB)
Title: Improvements in gas heated geysers
IPC: F24H1/12
Filed: 1930-06-26
Abstract: 357,629. Supply and delivery arrangements for hot water boilers. EWART, S., 346, Euston Road, London. June 26, 1930, No. 19452. [Class 64 (i).] A geyser comprises a chamber 1 heated by a thermostatically controlled gas burner 2 and provided with a valve 6 operable manually and capable of definite positions so that either hot or cold water or a mixture of both flows from the outlet. The control valve comprises a casing having an inlet 10, outlet ports 21, 22 and a longitudinally movable member carrying ports 23, 24. On moving this member firstly ports 21, 23 will coincide so that cold water flows through pipe 14 direct into the outlet pipe. Secondly ports 22, 24 will also coincide and cold water enters the base of the heater through pipe 13 and displaces hot water through the outlet pipe which mingles with the cold water still flowing through pipe 14. Finally ports 21, 23 move out of coincidence and only hot water leaves the outlet. The flue 5 of the heater is surrounded by a concentric sleeve 15.
Patent GB-1317368-A (GB)
Title: Heat-reflecting window pane
IPC: C03C17/36
Filed: 1971-06-08
Abstract: 1317368 Heat-reflecting coated sheet materials FLACHGLAS AG DELOG-DETAG 8 June 1971 [13 June 1970] 19480/71 Heading B2E [Also in Divisions B5 and C7] A heat-reflecting window pane having a visible light transmissivity of 20-60% comprises (1) a transparent support layer (2) an absorption layer on layer (1) and consisting of a metal, metalloid or alloy, layer (2) having a thickness such that the transmissivity of layers (1) + (2) is 10-65% less than that of layer (1), the refractive index and absorption coefficient of layer (2) being of the same order of magnitude for visible light, (3) a layer of Au on layer (2), and (4) a layer of dielectric on layer (3), layer (4) being substantially absorption free for visible light and having a refractive index more than 1.7. When the pane is installed, the coatings are indoors, and layer 4 may be coated with varnish, quartz, or another glass sheet, either adhesively attached thereto or provided as the other pane of double-glazing. Layer (1) is typically glass and may be glow-discharge cleaned prior to application of the coatings by sputtering or vapour deposition. Layer (2) is preferably Ca, Sc, Ti, V, Cr, Mn, Fe, Co, Ni or alloys thereof, e.g. 20 Cr-80 Ni, or Cr-Fe-Al, layer (3) is typically 150-400, and layer (4) is preferably ZnS but may be TiO 2 , CeO 2 , Bi 2 O 3  or PbCl 2 .
Patent GB-315833-A (GB)
Title: Improvements in or relating to electric signs
IPC: G09G3/00
Filed: 1929-06-25
Abstract: 315,833. American Traveling Sign Co., (Assignees of Norton, H. W.). July 19, 1928, [Convention date]. Monogrammic signs.-In an electric sign which together with its control means comprises a unitary structure, the lamps in a panel are selectively lighted by a travelling perforated tape 20 permitting electric connections between mercury or other electrically-conductive liquid in a tank 18 and various terminals in the tank base, the tape 20 running from the tank over a driving- pulley 37 and then backwards and forwards over spools 31, 32, 33, 29, 34, 35, 36 and into the tank again, where it is held in contact with the bottom by rollers. The support 28 for the spools 29, 30 is frictionally held in position on a strap 25 by a spring clip 41 which yields under excessive tension of the tape. The lamp panel is mounted on the same brackets as the strap 25. To discharge static electricity from the tape, a metal clip 44<1> supported by the strap 25 is arranged just above the tape. The driving motor 45 is mounted in the box containing the control device and the lamp panel.
Patent GB-370275-A (GB)
Title: Improvements relating to reinforced concrete construction
IPC: E04B5/06
Filed: 1931-07-07
Abstract: 370,275. Floors and the like for buildings. SCHLAGINTWEIT, F., 7, Kronprinzenstrasse, Baden-Baden, Germany, and CARMICHAEL, J., 331, Trinity Road, London. July 7, 1931, No. 19570. [Class 20 (iv).] In a reinforced concrete floor or similar horizontal slab structure of the type in which main beams are cast in situ above and/or between filler joists, the latter run parallel to the former and are supported by transverse beams, which interconnect the main beams and transmit the load reactions from the filler joists. The floor illustrated comprises main beams b, cast at intervals between precast reinforced concrete filler joists c placed side by side, a transverse beam d, and a continuous upper layer e of concrete. The joists c may be those described in Specification 309,083, [Class 20 (iv), Floors &c.]. The transverse beams are moulded between facing ends of the joists and have embedded therein the ends of the reinforcement of the joists. The joists are shaped to support one another laterally, and may be in three lengths across the span the centre portion being greater than the end portions. The joists are of I section with overlapping flanges, which are absent at the part where the main beams occur. Temporary supporting centring S is employed at the position of the transverse beams and is supported by scaffolding ul, T, v, u<2>.
Patent GB-1042935-A (GB)
Title: Improvements in or relating to arrangements for the seperation from a liquid of impurities which have a specific gravity differing from that of the liquid
IPC: C02F1/24
Filed: 1963-05-16
Abstract: 1, 042, 935. Gravity separation apparatus. J. CORNELISSEN. May 16, 1963 [May 18, 1962], No. 19594/63. Heading B1D. A tank for the separation from a liquid of impurities having a specific gravity differing from that of the liquid, comprises a partition 7 arranged in an upper portion thereof and dividing the tank into an inlet compartment 8 for the liquid to be cleaned and a discharge compartment 9 for the purified liquid, means for discharging impurities separated from the liquid, and means for pivotally mounting a bundle of parallel plates 10 in one of the two compartments in such a manner as to permit, when the plate bundle is in position in the tank, pivotal movement of the plate bundle between a substantially vertical cleaning position and an inclined working position and about an axis disposed substantially parallel to the plates. Discharging compartment 9 is located in an upper or lower part of the tank depending on whether the impurities are lighter or heavier than the liquid. The means for pivotally moving the plate bundle may also actuate closure means for the discharge compartment. The tank may be used in conjunction with conventional tanks in series for treating sewage.
Patent GB-448154-A (GB)
Title: Improvements in or relating to closures for jars and the like
IPC: B65D51/16
Filed: 1935-07-10
Abstract: 448,154. Closures for jars. ARMSTRONG, J. J. V., 12, Church Street, Liverpool.-(Phoenix Metal Cap Co., Inc. ; 2444, West 16th Street, Chicago, U.S.A.) July 10, 1935, No. 19664. [Class 125 (iii)] A cap 6 for a jar &c. has a series of inwardly directed projections 10 which provide variations in the sealing pressure on the gasket 5, so that parts of the gasket may yield to relieve excessive internal pressure in the jar.
Patent GB-1425216-A (GB)
Title: Ultrasonic remote control with digital i/cs
IPC: H04N5/00
Filed: 1973-04-25
Abstract: 1425216 Remote control receivers TEXAS INSTRUMENTS Inc 25 April 1973 [3 May 1972] 19713/73 Heading G4H [Also in Division H3] An ultrasonic remote control receiver comprises means 2, producing pulses at a frequency directly related to the frequency of a received ultrasonic signal, and means 11 for counting the pulses received during a given time interval to provide a digital indication which causes a decoder 14 to generate one of a plurality of control signals D0, ..., D9. In Fig. 1, the pulses from a Schmitt trigger 2 are applied to a monostable 5 whose hold time exceeds the period of any of the possible control signals: it thus remains triggered and supplies a " 1 " signal to a control 17 as long as a control signal is being received. During this time, and in response to clock signals 19, control 17 produces pulses in sequence on outputs 21-23 which respectively activate a frequency divider 7, enter the counter output in a store 12 (the contents of which are continuously being decoded by 14) and reset the counter. The hold time of monostable 5 is less than any interference pulse period so that the monostable can reset and stop the receiver operating. In Fig. 3, pulses from 2 trigger a monostable 25 which cannot be retriggered while in its astable state. A " 1 " output at Q1 enables a gate 28 to allow the pulses to pass to counter 11; when Q1 reverts to 0, a monostable 29 is triggered to supply a signal to 25 to prevent it being triggered again before the counter output has been processed. Circuitry 35-39 produces a pulse 34 when Q1 reverts to 0 which enables a gate 33 if it coincides with a signal pulse from 2, as it will do if a control signal is being received (Fig. 5, not shown). The output from 33 enables gating 30 for the transfer of the counter reading, and causes circuitry 40-44 to produce a reset pulse 24. A bi- and/or monostable may be incorporated between 2 and 27 to suppress interference pulses and/or to ignore the effects of an amplitude break in the control signal, which results in the production of two pulses rather than one. The receiver can be used for controlling radio and TV sets, and for remote control of cranes on large building sites.
Patent GB-870417-A (GB)
Title: Improvements in vertical oil fired boilers
Inventor: STEWART REGINALD HUSTON
IPC: F24H1/44
Filed: 1959-06-09
Abstract: 870,417. Baffles. JANITOR BOILERS Ltd. June 9, 1959, No. 19767/59. Class 126. [Also in Groups XII and XIII] A vertical oil-fired boiler has, above the combustion chamber, a series of spaced tubular waterways extending between opposite water-wayed walls with corrugated baffles between them to deflect flue gases on to the waterways. As shown, in a boiler of rectangular cross-section comprising a water-wayed flow 11 and walls such as 12, 13 a series of spaced waterways 17 extend between the side walls and corrugated plates 20 are disposed in five passages 18. The plates 20 are withdrawable by means of handles 21 through a door 22. In an alternative embodiment (not shown) the waterways extend between the front and rear walls 13 and 12 and the baffles are formed in two parts, the front part being removable through a door and the rear parts being slid longitudinally to the forward position for removal. A control box 25 for a motor or fan is cooled by air for combustion entering the boiler through a grill 27 and deflected by a baffle 28.